CN210705191U - Gantry numerical control machining center and control system thereof - Google Patents

Gantry numerical control machining center and control system thereof Download PDF

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Publication number
CN210705191U
CN210705191U CN201920405723.8U CN201920405723U CN210705191U CN 210705191 U CN210705191 U CN 210705191U CN 201920405723 U CN201920405723 U CN 201920405723U CN 210705191 U CN210705191 U CN 210705191U
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China
Prior art keywords
sucker
workbench
axis feeding
positioning
servo
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CN201920405723.8U
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Chinese (zh)
Inventor
徐淦
赖正友
秦振伟
容世桢
韦国平
李吉波
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Nanxing Machinery Co Ltd
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Nanxing Machinery Co Ltd
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Priority to CN201910109191 priority
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27CPLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C9/00Multi-purpose machines; Universal machines; Equipment therefor
    • B27C9/04Multi-purpose machines; Universal machines; Equipment therefor with a plurality of working spindles
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/18Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/402Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for positioning, e.g. centring a tool relative to a hole in the workpiece, additional detection means to correct position

Abstract

A gantry numerical control machining center and a control system thereof, wherein the gantry numerical control machining center comprises a workbench device, the workbench device comprises a plurality of groups of automatic fixed-displacement movable workbench mechanisms arranged along the X direction, and the gantry numerical control machining center has the advantages that the automatic moving and positioning of the workbench and a sucker can be realized; the control system comprises a CNC controller, a servo control unit, a machine head control unit, a workbench control unit and a vacuum control unit, wherein the servo control unit, the machine head control unit, the workbench control unit and the vacuum control unit are connected with a bus in a bidirectional control and parallel mode; the worktable control unit comprises a plurality of groups of automatic positioning mobile worktable control units and an X-direction positioning control unit; each group of automatic positioning mobile workbench control units comprises a group of workbench X-axis feeding servo systems, a plurality of groups of sucker Y-axis feeding servo systems and a Y-direction positioning control unit; the X-axis feeding servo system of the workbench and the Y-axis feeding servo system of the sucker are connected in parallel with a bus connected with the PLC; the method has the advantages of universality, high compatibility and strong portability.

Description

Gantry numerical control machining center and control system thereof
Technical Field
The utility model belongs to the technical field of the large-scale accurate digit control machine tool in timber and similar panel processing field and specifically relates to a longmen numerical control machining center and control system with high-grade numerical control system, processing timber.
Background
With the advent of microprocessors, the world has entered a new numerical control era, and multi-axis control of machine tools, which can only be realized by computers, has rapidly emerged, so that wood processing has entered an automated and intelligent era, and the application of numerical control wood processing centers in the field of wood processing is becoming more and more common.
In the prior art, the numerical control wood processing center can complete the processes of routing, vertical drilling and grooving, wood can be conveniently processed by the aid of the wood processing center, and production efficiency can be improved. However, after the wood is subjected to the working procedures of routing, vertical drilling and grooving through the wood processing center, if the working procedures of sawing, tenoning, horizontal drilling of four side surfaces and edge sealing are required to be carried out, the wood needs to be moved to other machine tools for processing respectively, and the processing efficiency is influenced. In addition, enterprises in the wood processing field not only need to spend a large amount of capital to purchase various processing devices respectively, but also need to provide a larger production workshop for placing related devices, and nowadays tenants are increasingly expensive, the cost of the enterprises in the wood processing field is further increased.
For example, in patent No. 201310344779.4, the invention patent with publication number 2013, 12 and 18, discloses a cantilever type wood composite processing center, which comprises a base, a beam, a plurality of movable workbenches, a vertical moving device, a transverse moving device, a wood processing device and a tool magazine, wherein:
the base is formed by a plurality of rectangular beam structures;
one end of the beam is provided with a support arm which is arranged downwards, the other end of the beam stretches across the base, and a longitudinal moving device which is used for driving the beam to move longitudinally along the base is arranged between the support arm and the base;
the movable workbench is slidably arranged on the base and comprises a plurality of groups of workbenches and a sliding mechanism which is arranged below the workbenches and used for the workbench to transversely slide back and forth on the platform, the sliding mechanism comprises a sliding block, a linear guide rail rod, a piston, an elastic element, a cover plate, a linear bearing and a linear guide rail locking block, the sliding block is fixedly arranged on the lower surface of the workbench, a linear guide rail groove is arranged at the lower end of the sliding block, an air chamber communicated with the linear guide rail groove is arranged at the upper end of the sliding block, and an air hole communicated with the air chamber is arranged on the side wall of the sliding block; the linear bearing is nested in the linear guide rail groove, the linear guide rail rod is slidably mounted in the linear bearing, the piston is slidably mounted in the air chamber up and down, the linear guide rail locking block is mounted in the linear guide rail groove and positioned above the linear guide rail rod, the upper end of the linear guide rail locking block is connected with the piston, the lower end of the linear guide rail locking block is provided with a clamping groove matched with the linear guide rail rod, the cover plate covers the opening above the air chamber, the elastic element is abutted between the cover plate and the upper end of the piston, and the air hole is positioned below the piston;
the side wall of the workbench is provided with a pushing mechanism for pushing up a plate, the pushing mechanism comprises a pushing plate, a pushing cylinder, a first swing rod and a second swing rod, the first swing rod and the second swing rod respectively comprise a pivoting part, a swing arm and an extension arm, the swing arm and the extension arm extend outwards at a certain angle from the pivoting part, the upper ends of the swing arms of the first swing rod and the second swing rod are respectively fixed on the pushing plate, the pivoting parts of the first swing rod and the second swing rod are respectively pivoted on the side wall of the workbench, the tail end of the cylinder is fixed on the side wall of the workbench, and the end of the cylinder is connected with the extension arm of the second swing rod;
a sucker for sucking the plate is arranged at the top of the workbench;
positioning rods for positioning the plate are respectively arranged at two ends of the top of the workbench;
the vertical moving device and the horizontal moving device are respectively arranged on the cross beam;
the wood processing device comprises a main shaft and a gang drill, wherein the main shaft and the gang drill are respectively arranged on the vertical moving device;
the tool magazine is arranged on the side wall of the beam and comprises a rack, a support frame which can be slidably arranged on the rack, a cutter head arranged on the support frame, a feeding servo mechanism which is arranged between the rack and the support frame and used for the cutter head to transversely move and a servo motor which drives the cutter head to rotate.
This cantilever type timber combined machining center, although timber carries out the routing through wood working center, vertical drilling, behind the fluting process, can also realize sawing, tenoning, horizontal drilling, the banding process, nevertheless because this cantilever type timber combined machining center only has a relative crossbeam back and forth movement, wood working device including main shaft and gang drill, the gang drill left side is owing to there is the main shaft, main shaft and gang drill are fixed at lateral position, therefore the left side installation horizontal tool who will do the gang drill interferes easily, thereby will realize horizontal drilling to ligneous right flank, the banding process, still more difficult.
The plurality of movable working tables of the cantilever type wood composite machining center have the advantages that in order to realize the functions of wood adsorption and positioning, the structure is very complex, the number of parts is very large, the assembly is complex, the labor cost of production machinery is greatly increased, and the technical requirements on assembly workers are increased. In particular, both the suction cup and the table need to be manual.
Patent No. 201510758995.2, published 2016, 2, and 17 discloses an independently movable vacuum chuck with an airlock and a plate material adsorption device.
The utility model provides a take airlock type independent mobile's vacuum chuck, follows the removal subassembly including sucking disc pedestal, sucking disc panel, sucking disc angle modulation fixing base, airlock subassembly, vacuum pipeline, this sucking disc panel and sucking disc pedestal are connected to this sucking disc angle modulation fixing base, and this airlock subassembly sets up in sucking disc pedestal below and connects the workstation, and this vacuum pipeline follows the removal unit mount in this sucking disc pedestal side, and vacuum pipeline follows the removal subassembly and passes through the vacuum suction pipe and connect airlock subassembly.
The air lock component comprises an air inlet piston seat, a piston plate, a piston movable plate, a wave-shaped elastic washer, two hook plates, two insert blocks, two insert block fixing sleeves and a left side opening stop block; the air inlet piston seat and the piston movable plate form a sealed air chamber, the piston plate is arranged in the sealed air chamber, and an O-shaped sealing ring is arranged in the sealed air chamber; the wave-shaped elastic washer is abutted between the sucker seat body and the air inlet piston seat, and an air lock air inlet is arranged on the air inlet piston seat; the two hook plates are connected to two sides of the air inlet piston seat and hook the workbench, and an insert is arranged between the hook plates and the workbench.
The vacuum pipeline following moving assembly comprises an air inlet stop block, a stop block cover plate and an air inlet connecting block, wherein the air inlet stop block is fixed on the sucker base body, the stop block cover plate is installed on the outer side of the air inlet stop block, the air inlet connecting block is installed on the inner side of the air inlet stop block, an elbow is installed on the air inlet connecting block, and the elbow is connected with a vacuum adsorption air inlet.
The plate adsorption device comprises a vacuum chuck with an air lock type independent moving type, a workbench, a positioning cylinder, a chuck jacking and loosening mechanism, a moving sliding mechanism, a first air switch and a second air switch, wherein the positioning cylinder is installed at two ends of the workbench, the chuck jacking and loosening mechanism is installed on the side face of the workbench, the moving sliding mechanism is installed on the lower side of the workbench, the first air switch is connected with and controls the moving sliding mechanism, and the second air switch is connected with and controls the vacuum chuck.
The sucking disc top loose mechanism is arranged on the side face of the movable workbench and used for pushing loose plates after the plates are processed, and the plates need to be pushed loose by upward acting force because the plates are sucked tightly downwards in a vacuum mode. The movable sliding mechanism is arranged on the lower side of the movable workbench and is matched with the circular machine table guide rail for fixing, the movable sliding mechanism is connected with the first air switch, and the locking and unlocking states of the movable sliding mechanism are controlled by the first air switch. In this embodiment, the number of the movable sliding mechanisms is two, and the two movable sliding mechanisms are controlled by the first air switch, so that the same air switch can simultaneously lock the movable sliding mechanisms on the same movable workbench. The vacuum chucks (including a first chuck, a second chuck and a third chuck) are all connected with a second air switch, and the locking and loosening states of the vacuum chucks are controlled by the second air switch simultaneously, for example, after the second switch presses the air switch, the first chuck, the second chuck and the third chuck are loosened and can be manually adjusted to move on the movable workbench back and forth. When the second switch loosens the air switch, the first sucker, the second sucker and the third sucker are locked and cannot move, and the plate can be machined on the first sucker, the second sucker and the third sucker after being locked.
In the invention, in order to position the vacuum chuck at a processing position, the vacuum chuck with the air lock type independent moving type is required to be provided with the air lock assembly, and the lock assembly comprises an air inlet piston seat, a piston plate, a piston movable plate, a wave-shaped elastic washer, two hook plates, two inserts, two insert fixing sleeves and a left side opening stop block.
The plate adsorption device must comprise a sucker jacking and loosening mechanism, a moving sliding mechanism, a first air switch and a second air switch, and is particularly multiple in parts, complex in structure and difficult to install.
In the two patents, the sucker cannot be automatically moved, the sucker needs to be manually moved to a processing position, the workbench cannot be automatically moved, and the workbench needs to be manually moved to the processing position, so that the degree of automation is low, the sucker is complex to manually move a sucker mechanism, the sucker is inaccurately positioned, the risk is greatly improved, and the occurrence of faults is greatly increased. And if the operation personnel operate improperly, the sucker mechanism is easy to damage, the cutter is easy to damage, and safety accidents are easy to happen.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to prior art exists, the utility model discloses the first technical problem that solves is, provides a duplex head longmen machining center, has the advantage that can realize workstation and sucking disc automatic movement location, simple structure and a tractor serves two-purpose.
There is not enough to prior art, the to-be-solved second technical problem of the utility model is, provide a longmen numerical control machining center's control system, this control system uses bus technology as the core, has abundant external interface and "plug and play" function, has the security height, fault-tolerant ability is strong, high-efficient, stable, the precision is high, and the sucking disc can realize Y to automatic movement, the workstation can realize X to automatic movement to make workstation and sucking disc can realize automatic movement and location.
A gantry numerical control machining center comprises a base, a gantry device, a machine head and a workbench device;
the working table device is arranged on the base, and the portal frame device can be arranged together with the base in a back-and-forth X-direction sliding manner; the machine head can be arranged on the beam in a reciprocating Y-direction sliding manner;
the workbench device comprises a plurality of groups of moving workbench mechanisms which are arranged on the base along the X direction, and X-direction positioning mechanisms which are arranged on the base, arranged at two sides of the moving workbench mechanisms and used for positioning the plate in the X direction;
the machine head comprises a left machine head and a right machine head; the left machine head and the right machine head are arranged in parallel left and right and are arranged right above the workbench device;
the movable worktable mechanism is an automatic fixed-displacement movable worktable mechanism; each group of automatic fixed displacement working table mechanisms comprises a working table which is arranged on a base and can slide in the X direction back and forth relative to the base, a working table moving and positioning mechanism which is arranged between the base and the working table and can drive the working table to slide in the X direction back and forth relative to the base independently and automatically position the working table at a processing position, a plurality of sucker mechanisms which can be arranged on each working table independently in a Y direction sliding manner, a sucker moving and positioning mechanism which is arranged between each sucker mechanism and the working table and drives a sucker to slide in the Y direction on the working table and positions the sucker at the processing position, a Y direction positioning mechanism which is arranged at the end part of each working table and carries out Y direction positioning on a plate through up-down movement, and an electric circuit following and moving assembly which is arranged between the working table and the sucker moving and positioning; one sucker corresponds to one sucker moving and positioning mechanism; one workbench corresponds to one workbench moving and positioning mechanism;
the worktable moving and positioning mechanism comprises a worktable X-axis feeding servo mechanism, a worktable X-axis feeding servo mechanism mounting seat, a worktable X-axis mechanical transmission mechanism and a worktable X-axis guide mechanism; the X-axis feeding servo mechanism of the workbench is arranged on an X-axis feeding servo mechanism mounting seat of the workbench, the X-axis feeding servo mechanism mounting seat of the workbench is arranged on the workbench, and the X-axis mechanical transmission mechanism of the workbench and the X-axis guide mechanism of the workbench are arranged between the workbench and the base;
each sucker mechanism comprises a sucker, and the vacuum pipeline follows the moving assembly; the sucker comprises a sucker panel, a sucker seat body and a sealing ring, wherein the sucker panel is arranged on the sucker seat body, and the sealing ring is vertically abutted between the sucker panel and the sucker seat body to form an air chamber between the sucker panel and the sucker seat body; the vacuum pipeline is arranged at one side of the sucker seat body along with the moving assembly; the vacuum pipeline following moving assembly is in gas connection with the gas chamber;
the sucker moving and positioning mechanism comprises a sucker Y-axis feeding servo mechanism, a sucker Y-axis feeding servo mechanism mounting seat, a sucker Y-axis mechanical transmission mechanism and a sucker Y-axis guide mechanism; the sucker Y-axis feeding servo mechanism is arranged on the sucker Y-axis feeding servo mechanism mounting seat, the sucker Y-axis feeding servo mechanism mounting seat is arranged on the sucker seat body, and the sucker Y-axis mechanical transmission mechanism and the sucker Y-axis guide mechanism are arranged between the workbench and the sucker seat body.
As an improvement of the first scheme, the base comprises a mounting frame; the X-axis feeding servo mechanism of the workbench comprises an X-axis feeding servo motor; the X-axis mechanical transmission mechanism of the workbench comprises a gear and a X-direction rack of the workbench, which is meshed with the gear; the X-axis guide mechanism of the workbench comprises two X-direction guide rails of the workbench and X-direction guide sliders of the workbench respectively matched with the two X-direction guide rails of the workbench; all the worktable moving and positioning mechanisms share two X-direction guide rails of the worktable; the two X-direction guide rails of the workbench are respectively fixed on the top surface of the mounting frame of the base and are arranged on the left side and the right side of the mounting frame; the X-direction guide slide block of the workbench is fixed with the bottom surface of the workbench and is arranged right above the X-direction guide rails of the two workbenches; a driving shaft of the X-axis feeding servo mechanism of the workbench is coaxially arranged with a gear, and the axis of the gear is Y-direction; the X-direction rack of the workbench is fixed with the inner side surface of the mounting frame of the base; the teeth of the X-direction rack of the workbench face downwards and are meshed with the gear;
the sucker Y-axis feeding servo mechanism comprises a sucker Y-axis feeding servo motor; the sucker Y-axis mechanical transmission mechanism comprises a gear and a sucker Y-direction rack meshed with the gear; the sucker Y-axis guide mechanism comprises a sucker Y-direction guide rail and a sucker Y-direction sliding block respectively matched with the sucker Y-direction guide rail; a guide rail accommodating groove for accommodating the Y-direction guide rail of the sucker is formed in the top surface of the workbench; the sucker Y-direction guide rail is fixed in a guide rail accommodating groove on the top surface of the workbench; the Y-direction slide block of the sucker is fixed with the bottom of the sucker seat body; the sucker Y-direction rack is fixed with the side surface of one side of the workbench, which is away from the vacuum pipeline following moving assembly, and the teeth of the sucker Y-direction rack face the side away from the vacuum pipeline following moving assembly;
the mounting seat of the sucker Y-axis feeding servo mechanism comprises a mounting seat body, wherein a gear accommodating cavity with an opening facing the workbench is arranged on the mounting seat body, and a Y-direction clearance groove penetrating through the gear accommodating cavity is formed in one side of the mounting seat body facing the workbench; the Y-direction clearance groove is used for avoiding the Y-direction rack of the sucker;
a driving shaft of the sucker Y-axis feeding servo mechanism passes through the bottom of the gear accommodating cavity and is coaxially installed with the gear, and the gear is accommodated in the gear accommodating cavity; the sucker Y-axis feeding servo mechanism mounting seat is fixed on the side surface of the sucker seat body facing to the sucker Y-direction rack; the gear is meshed with the sucker Y-direction rack.
As the improvement of the first proposal, the device also comprises an air lock component;
the air lock assembly comprises a piston seat, a piston mounting plate, an elastic gasket, two hook plates on the left side and the right side and a left stopper;
the bottom of the sucker seat body is provided with an accommodating cavity, the piston seat is arranged in the accommodating cavity of the sucker seat body, and the elastic gasket is abutted between the sucker seat body and the piston seat up and down;
an inner cavity with a downward opening is arranged on the piston seat, and the piston mounting plate is arranged at the bottom of the piston seat; the piston is arranged in the inner cavity of the piston seat; the piston seat and the piston mounting plate are arranged in the accommodating cavity of the sucker seat body; a sealed air chamber is formed between the piston seat and the piston, and an air port communicated with the sealed air chamber is also arranged;
the hook plate comprises an upper hook part and a lower hook part; clamping grooves are formed in two sides of the piston seat, clamping grooves are formed in the workbench, the upper hook parts of the two hook plates are clamped into the clamping grooves of the piston seat, the lower hook parts are clamped into the clamping grooves of the workbench, and the hook plate on the left side is tightly pressed by the left blocking part; the left hook plate is pressed tightly by the vacuum pipeline following the moving assembly.
As an improvement of the first scheme, the electric circuit following and moving assembly comprises more than one drag chain and drag chain installation seats; one sucker mechanism corresponds to one drag chain, and the drag chain is connected with a sucker Y-axis feeding servo mechanism of the sucker mechanism;
the drag chain mounting seat is arranged on one side of the workbench, which is away from the vacuum pipeline following moving assembly, and drag chain grooves matched with the drag chains one by one are formed in the drag chain mounting seat; the drag chain is arranged in the corresponding drag chain groove.
As an improvement of the first scheme, the X-direction positioning mechanism comprises an X-direction positioning cylinder, a Y-direction positioning strip, a positioning seat and a positioning guide mechanism arranged between the Y-direction positioning strip and the positioning seat;
the positioning seat is installed on the base, and X is installed on the positioning seat to the location cylinder, and Y is to the location strip movably from top to bottom on installing the positioning seat, through X to stretching out of the piston rod of location cylinder drive the top surface that the location strip rises and protrudes the sucking disc.
As an improvement of the first scheme, the X-direction positioning mechanism further comprises a small plate positioning mechanism;
the small plate positioning mechanism comprises a positioning piece, a positioning piece 90-degree turnover mechanism and a positioning support which is arranged on the top surface of the positioning seat and protrudes out of the positioning seat towards one side of the automatic fixed displacement working table mechanism;
the positioning piece comprises a mounting part and a positioning part; a positioning piece accommodating groove for accommodating the positioning piece is arranged on the positioning bracket; the positioning piece 90-degree turnover mechanism comprises Y-direction adjusting through holes and adjusting handles which are arranged on the side walls of the two sides of the positioning piece accommodating groove, and the adjusting through holes comprise turnover arc sections distributed on an XZ plane; one end of the mounting part of the positioning piece, which is far away from the positioning part, is rotatably pivoted on the side walls at the two sides of the positioning piece accommodating groove through a shaft.
As a common improvement of the above schemes, the portal frame device comprises a left upright post, a right upright post and a beam, wherein two ends of the beam are respectively fixed at the tops of the left upright post and the right upright post; the left upright post, the beam and the right upright post form a portal frame, and the beam is positioned above the base and stretches across the base; the portal frame device also comprises an X-axis feeding left servo mechanism for driving the portal frame to slide back and forth in the X direction relative to the base, an X-axis feeding left mechanical transmission mechanism and an X-axis feeding left guide mechanism which are arranged between the base and the left upright post, an X-axis feeding right servo mechanism for driving the portal frame to slide back and forth in the X direction relative to the base synchronously with the X-axis feeding left servo mechanism, and an X-axis feeding right mechanical transmission mechanism and an X-axis feeding right guide mechanism which are arranged between the base and the right upright post;
the left machine head comprises a left Y-direction sliding seat assembly, a left Z-direction large sliding seat assembly, a left drilling device and a routing device;
the left Y-direction sliding seat assembly comprises a left Y-direction sliding seat arranged on the cross beam, a Y-axis feeding left servo mechanism for driving the left Y-direction sliding seat to slide back and forth relative to the cross beam Y, a Y-axis feeding left mechanical transmission mechanism and a Y-axis feeding left guide mechanism which are arranged between the cross beam and the left Y-direction sliding seat;
the left Z-direction large sliding seat assembly comprises a left Z-direction large sliding seat with a plate-shaped structure, a Z-axis feeding left servo mechanism for driving the left Z-direction large sliding seat to slide back relative to the left Y-direction sliding seat in a Z-direction, a Z-axis feeding left mechanical transmission mechanism and a Z-axis feeding left guide mechanism, wherein the Z-axis feeding left mechanical transmission mechanism and the Z-axis feeding left guide mechanism are arranged between the left Y-direction sliding seat and the left Z-direction large sliding seat;
the routing machining device comprises a routing sliding seat capable of lifting relative to a left Z-direction large sliding seat, a routing electric spindle arranged on the routing sliding seat, and an electric spindle lifting mechanism for controlling the routing electric spindle to lift on the left Z-direction large sliding seat;
the left drilling machining device comprises a left drill box, a plurality of drill bits, a drill bit cylinder and a drill bit driving mechanism, wherein the left drill box is fixed on the side surface of the left Z-direction large sliding seat, which is far away from one side of the left Y-direction sliding seat;
the right machine head comprises a right Y-direction sliding seat assembly, a right Z-direction sliding seat assembly and a right drilling device;
the right Y-direction sliding seat assembly comprises a right Y-direction sliding seat arranged on the cross beam, a Y-axis feeding right servo mechanism for driving the right Y-direction sliding seat to slide back and forth relative to the cross beam Y, a Y-axis feeding right mechanical transmission mechanism and a Y-axis feeding right guide mechanism which are arranged between the cross beam and the right Y-direction sliding seat;
the right Z-direction sliding seat assembly comprises a right Z-direction sliding seat with a plate-shaped structure, a Z-axis feeding right servo mechanism for driving the right Z-direction sliding seat to slide back and forth relative to the right Y-direction sliding seat in a Z direction, a Z-axis feeding right mechanical transmission mechanism and a Z-axis feeding right guide mechanism which are arranged between the right Y-direction sliding seat and the right Z-direction sliding seat;
the right drilling machining device comprises a right drill box, a plurality of drill bits, a drill bit cylinder and a drill bit driving mechanism, wherein the right drill box is fixed on the side surface of the right Z-direction sliding seat, which is far away from one side of the right Y-direction sliding seat, the drill bits are installed on the right drill box, the drill bit cylinder drives each drill bit to pop up and retract when the drill bit is machined, and the drill bit driving mechanism drives the drill bits to machine.
A control system of a gantry numerical control machining center comprises a CNC controller, a bus connected with the CNC controller, a servo control unit, a left machine head control unit, a right machine head control unit, a workbench control unit, a vacuum control unit, a strong current control unit, a weak current control unit, a man-machine conversation interface unit and a communication unit, wherein the servo control unit, the left machine head control unit, the right machine head control unit, the workbench control unit, the vacuum control unit, the strong current control unit and the weak current control unit are;
the servo control unit comprises an X-axis feeding left servo system for driving the portal frame to slide back and forth along the base in the X direction, an X-axis feeding right servo system for driving the portal frame to slide back and forth along the base in the X direction in synchronization with the X-axis feeding left servo system, a Y-axis feeding left servo system for driving the machining device of the left machine head to slide back and forth in the Y direction along the cross beam, a Y-axis feeding right servo system for driving the machining device of the right machine head to slide back and forth in the Y direction along the cross beam, a Z-axis feeding left servo system for driving the machining device of the left machine head to slide back and forth in the Z direction, and a Z-axis feeding right servo system for driving the machining; the X-axis feeding left servo system, the X-axis feeding right servo system, the Y-axis feeding left servo system, the Y-axis feeding right servo system, the Z-axis feeding left servo system and the Z-axis feeding right servo system are all semi-closed loop feeding servo systems and are connected with a bus bidirectional control connected with the CNC controller in parallel;
the control system also comprises a PLC and a bus connected with the PLC; the CNC controller and the PLC are both controlled in a bidirectional mode and connected to the Ethernet switch in parallel; the worktable control unit comprises a plurality of groups of automatic positioning mobile worktable control units and X-direction positioning control units which are arranged at two sides of the automatic positioning mobile worktable and used for carrying out X-direction positioning on the workpiece;
each group of automatic positioning mobile workbench control units comprises a group of workbench X-axis feeding servo systems for controlling the automatic positioning mobile workbench to slide back and forth in the X direction, a plurality of groups of sucker Y-axis feeding servo systems, and Y-direction positioning control units which are arranged at the end part of the automatic positioning mobile workbench and used for carrying out Y-direction positioning on the workpiece; a group of sucker Y-axis feeding servo systems control one sucker to slide back and forth in the Y direction; the X-axis feeding servo system of the workbench and the Y-axis feeding servo system of the sucker are connected in parallel with a bus connected with the PLC;
the vacuum control unit comprises a vacuum pump control unit and a workbench vacuum negative pressure detection unit which are connected in parallel with a bus connected with the CNC controller.
As the improvement of the scheme, the X-direction positioning control unit comprises an air cylinder, a sensor arranged on the air cylinder, an electromagnetic valve and an I/O module; the I/O module is connected with a bus bidirectional control parallel connection of a CNC controller, the solenoid valve is connected with the I/O module in a unidirectional control series connection mode, the I/O module controls the solenoid valve in a unidirectional mode, the cylinder is connected with the solenoid valve in a unidirectional control series connection mode, the solenoid valve controls the cylinder in a unidirectional mode, the sensor is connected with the I/O module in a unidirectional control series connection mode, and the sensor controls the I/O module in a unidirectional mode;
the Y-direction positioning control unit comprises more than one cylinder, a sensor arranged on each cylinder, an electromagnetic valve and an I/O module; the I/O module is connected with a bus bidirectional control parallel connection of a CNC controller, the solenoid valve is connected with the I/O module in a unidirectional control series connection mode, the I/O module controls the solenoid valve in a unidirectional mode, more than one cylinder is connected with the solenoid valve in a unidirectional control mode, the solenoid valve controls the cylinder in a unidirectional mode, more than one sensor is connected with the I/O module in a unidirectional control mode, and the sensor controls the I/O module in a unidirectional mode;
the vacuum pump control unit comprises a thermal relay, a contactor, a vacuum pump three-phase motor, more than one vacuum electromagnetic valve and a plurality of suckers; the thermal relay is connected with a bus bidirectional control connected with the CNC controller in parallel, the contactor is connected with the thermal relay bidirectional control in series, the vacuum pump three-phase motor is connected with the contactor in series in unidirectional control, one vacuum electromagnetic valve is connected with the vacuum pump three-phase motor in series in unidirectional control or more than two vacuum electromagnetic valves are connected with the vacuum pump three-phase motor in parallel in unidirectional control, and the plurality of suckers are connected with the vacuum electromagnetic valves in parallel in unidirectional control; the contactor unidirectionally controls the three-phase motor, the vacuum pump three-phase motor unidirectionally controls the vacuum electromagnetic valve, and the vacuum electromagnetic valve unidirectionally controls the plurality of suckers;
the workbench vacuum negative pressure detection unit comprises an I/O module and a vacuum detection device; the I/O module is connected with a bus bidirectional control parallel connection connected with the CNC controller, the vacuum detection device is connected with the I/O module in series in a unidirectional control mode, and the vacuum detection device controls the I/O module in a unidirectional control mode.
As a further improvement, the Y-axis feeding left servo system comprises an a/D module and a D/a module, a servo driving device, a servo motor, a position detection device and a speed detection device, a position feedback module and a speed feedback module which are connected in series in sequence in a bidirectional control manner, wherein the a/D module and the D/a module are connected in parallel with a data bus, a control bus and an address bus which are connected with the CNC controller in a bidirectional control manner, and the position feedback module and the speed feedback module are connected in parallel with the data bus, the control bus and the address bus which are connected with the CNC controller in a bidirectional control manner;
the structure, control mode and connection mode of the Y-axis feeding right servo system, the X-axis feeding left servo system, the X-axis feeding right servo system, the Z-axis feeding left servo system and the Z-axis feeding right servo system are the same as those of the Y-axis feeding left servo system.
The utility model discloses a longmen numerical control machining center's beneficial effect is:
the workbench device can realize that four plates are installed on the workbench device at most simultaneously, the service efficiency of the double machine heads is improved, the wood can be engraved and milled, vertically drilled, grooved, sawed, tenoned, horizontally drilled on four side surfaces, edge sealing and the like in a high-efficiency, high-precision and high-automation mode, and the labor cost is greatly reduced.
The worktable of the automatic fixed displacement worktable mechanism is driven by a worktable X-axis feeding servo mechanism of a worktable moving and positioning mechanism to move the whole worktable in the X direction and accurately position the worktable in the X direction; then every workstation is equipped with a plurality of sucking disc mechanisms, and a sucking disc mechanism feeds servo mechanism drive Y by a sucking disc Y axle of sucking disc moving positioning mechanism and to removing and Y to accurate location, and sucking disc mechanism adsorbs the plate, realizes the accurate automatic absorption location of work piece.
The mutual independent removal of workstation and sucking disc mechanism, workstation and sucking disc mechanism that automatic set displacement moved workstation mechanism can be according to the size of processing work piece, and the position is moved well in the automation, realizes the accurate location in the two-dimensional plane, and degree of automation is high, breaks through in the past that manual movement sucking disc mechanism is loaded down with trivial details and sucking disc location is inaccurate, has reduced the risk, has reduced the emergence of trouble. If operating personnel misoperation in the past, very easily make sucking disc mechanism damage, damage the cutter, the incident takes place easily.
The workbench moving and positioning mechanism utilizes the self-locking function of the workbench X-axis feeding servo mechanism and the workbench X-axis feeding transmission mechanism, the automatic positioning of the workbench can be realized without a sucker jacking and loosening mechanism, a moving and sliding mechanism, a first air switch, a second air switch and the like, the automatic moving of the workbench can also be realized, the structure is greatly simplified, and the automation degree is greatly improved.
The sucker moving and positioning mechanism utilizes the self-locking function of the sucker Y-axis feeding servo mechanism and the sucker Y-axis feeding transmission mechanism, can realize the automatic positioning of the sucker without an air lock assembly and the like, can also realize the automatic movement of the sucker, greatly simplifies the structure and greatly improves the automation degree.
The workbench of the automatic fixed-displacement workbench mechanism is driven by a workbench X-axis feeding servo mechanism, is driven by a gear and a helical rack, is stable and efficient, and can realize accurate positioning in the X direction besides the movement in the X direction. A sucking disc mechanism is fed servo mechanism drive by sucking disc Y axle, adopts gear and spur rack, and is high-efficient economical, and convenient maintenance realizes the accurate location in Y direction.
The left Y-direction sliding seat assembly is arranged on the cross beam, and the Z-direction large sliding seat assembly is arranged on the left Y-direction sliding seat assembly, so that the gantry numerical control machining center can flexibly move according to machining requirements; the wood processing device can also comprise a tool magazine capable of automatically changing tools, so that the tool changing of the routing processing device of the wood processing device is more convenient, and the complicated step of manually changing the tools is avoided; the worktable device comprises an automatic fixed displacement worktable mechanism, the positions of the worktable and the sucker mechanism can be adjusted at any time according to the size of the plate, and the convenience of timber processing is further improved. Therefore, the device provides great convenience for the numerical control machining center to machine the plate, greatly improves the production efficiency of the machining center, reduces the amount of manual labor and reduces the production cost.
The gantry numerical control machining center comprises a left machine head and a right machine head, synchronous work can be achieved, the machining device of the left machine head is used on the machine in an alternating mode, the machining functions of high efficiency, high precision and high automation are achieved, and labor cost is greatly reduced.
Left aircraft nose and right aircraft nose can process alone, and simultaneously, left aircraft nose alone can have drilling and routing processing function to timber concurrently, has realized a tractor serves two purposes, improves machining efficiency, saves the cost, especially the design of electric main shaft elevating system in the left aircraft nose for left drilling processingequipment and routing processingequipment's use mutually noninterfere, let whole left aircraft nose structure inseparabler, the rigidity is stronger, and the cooperation precision is higher.
The gantry numerical control machining center is ingenious and reasonable in overall structural design, convenient to install among parts, good in stability and reliable in action.
The control system of the gantry numerical control machining center has the advantages that:
the control system is divided into large modules, namely a servo control unit, a machine head control unit, a workbench control unit, a vacuum control unit, a strong and weak current control unit, a man-machine conversation interface unit, a communication unit and the like, and each module is divided into a plurality of small control units.
The large module can be designed into an open type and modular structure, has a standardized interface, can be connected with a standardized interface and a remote I/O on a CNC controller, and has universality of hardware and software, high compatibility and strong transportability.
Each module has independent function, the modules of the same kind can be reused and exchanged in a product family, and the arrangement and combination of the related modules can form a final product.
The workbench control unit is realized by driving 6 workbench X-axis feeding servo systems and one workbench X-axis feeding servo system corresponding to three sucker Y-axis feeding servo systems through a CanOPEN bus by a PLC. The servo motors of the X-axis feeding servo system of the workbench and the Y-axis feeding servo system of the sucker use absolute value encoders, and the zero resetting is not needed each time.
The control mode of the workbench control unit uses 24 servo motors, and 24 servo drivers are arranged in the electric cabinet, so that the workbench control unit has the advantages that one driver drives one servo, the problem of user troubleshooting is facilitated, and the after-sale maintenance cost is reduced.
The control software of the PLC installed on the numerical control machining center can calculate the optimal positions of the workbench and the suckers according to the sizes of the workpieces at each time, position information is transmitted to the PLC through the Ethernet, and the PLC controls the corresponding automatic positioning movable workbench and the suckers to rapidly and simultaneously move to quickly position the workpieces.
Two groups of X-direction positioning control units: the CNC controller controls a positioning cylinder through an electromagnetic valve via an I/O module, and a sensor mounted on the positioning cylinder detects a cylinder state and feeds back the cylinder state to the CNC controller through the I/O module.
Four sets of Y-direction positioning control units: the CNC controller controls three positioning cylinders through one solenoid valve via an I/O module, and the states of the cylinders are detected by sensors mounted on the three positioning cylinders and fed back to the CNC controller through the I/O module.
The CNC controller controls the starting and stopping of the vacuum pump and the suction and disconnection of the vacuum solenoid valve through the I/O module according to the input NC program code, the vacuum detection device can monitor the vacuum pressure in real time, if the CNC controller controls the starting of the vacuum pump and controls the suction of the vacuum solenoid valve, the vacuum detection device does not feed back a vacuum negative pressure signal of the CNC controller through the I/O module, and the CNC controller can give an alarm.
To more clearly illustrate the structural features and effects of the present invention, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a perspective assembly perspective view of embodiment 1 of the present invention.
Fig. 2 is a schematic perspective view of a base and a table device according to embodiment 1 of the present invention.
Fig. 3 is a schematic perspective view of a left handpiece in embodiment 1 of the present invention.
Fig. 4 is a schematic exploded perspective view of the left handpiece of embodiment 1 of the present invention.
Fig. 5 is a schematic perspective view of the right handpiece of embodiment 1 of the present invention.
Fig. 6 is a schematic exploded perspective view of the right handpiece of embodiment 1 of the present invention.
Fig. 7 is a perspective view of an automatic fixed-displacement table mechanism according to embodiment 1 of the present invention.
Fig. 8 is an exploded perspective view of an automatic fixed displacement table mechanism according to embodiment 1 of the present invention.
Fig. 9 is a cross-sectional view of the axis of the Y-axis feed servo motor of fig. 7.
Fig. 10 is a schematic perspective view of the X-direction positioning mechanism of embodiment 1.
FIG. 11 is a sectional view of the axis of the Y-axis feed servomotor of embodiment 2 through the suction cup.
Fig. 12 is a general diagram of a control system according to embodiment 3 of the present invention.
Fig. 13 is a general diagram of a servo control unit of a control system according to embodiment 3 of the present invention.
Fig. 14 is a general diagram of a left handpiece control unit of the control system according to embodiment 3 of the present invention.
Fig. 15 is a general diagram of a right handpiece control unit of the control system according to embodiment 3 of the present invention.
Fig. 16 is a general diagram of a communication unit of the control system according to embodiment 3 of the present invention.
Fig. 17 is a general view of a feed servo system of a table control unit of a control system according to embodiment 3 of the present invention.
Fig. 18 is a positioning control unit overview of the table control unit of the control system according to embodiment 3 of the present invention.
Fig. 19 is a general diagram of a vacuum control unit of a control system according to embodiment 3 of the present invention.
Description of the drawings
1. Base 2, portal frame device 3, left machine head 4, right machine head 5 and workbench device
11. Square tube 12, mounting frame 13, Y-direction reinforcing square tube
21. Left upright column 22, right upright column 23, cross beam 24, portal frame 25, left servo motor 26, left X-direction rack 27 and left X-direction guide rail
31. A left Y-direction sliding seat assembly 32, a left Z-direction large sliding seat assembly 33, a left drilling device 34 and a routing device
35. A left Y-direction slide seat 36, a Y-axis feeding left servo motor 37, a Y-direction rack 38, a Y-direction linear guide rail 39 and a Y-direction slide block
40. Sliding chute
50. A Z-axis feeding left servo motor 51, a left Z-direction large sliding seat 52, a Z-axis left servo motor mounting seat 53, a left screw rod 54, a left screw rod nut 55 and a left Z-direction guide rail
60. A routing slide seat 61, a routing electric spindle 62, a lifting cylinder 63, a Z-direction guide rail 64 and a Z-direction slide block
70. Left drill box fixing plate 71, left drill box 72 and drill bit
80. A right Y-direction sliding seat component 81, a right Z-direction sliding seat component 82, a right drilling device 83, a right Y-direction sliding seat 84, a Y-axis feeding right servo motor 85, a Y-axis feeding right servo mechanism mounting seat 86, a right gear 87, a right Z-direction sliding seat 88, a Z-axis right servo motor mounting seat 89, a Z-axis feeding right servo motor 90, a right screw rod 91, a right screw rod nut 92, a right Z-direction rail 93, a right Z-direction sliding block 94, a sliding groove 95, a right drill box fixing plate 96, a right drill box 97, a drill 99, a right Y-direction sliding block 100, a sliding groove
101. Automatic fixed displacement working table mechanism 102, X-direction positioning mechanism 103, working table 104, working table moving positioning mechanism 105, sucker mechanism 106, sucker moving positioning mechanism 107, Y-direction positioning mechanism 108, electric circuit following moving assembly
111. A workbench X-axis feeding servo mechanism mounting seat 112, an X-axis feeding servo motor 113, a speed reducer 114, a motor fixing plate 115, a motor fixing seat 116, a gear 117, a gear gland 118, a workbench X-direction rack 119, a workbench X-direction guide rail 120, a workbench X-direction guide slide block 121 and an X-direction inner mounting bar
130. Sucking disc 131, vacuum line follow-up moving assembly
140. Suction cup panel 141, suction cup base 142, sealing ring 150, piston base 151, piston 152, piston mounting plate 153, wave-shaped elastic washer 154 and hook plate
160. Accommodating cavity 161, inner cavity 162, clamping groove 163 and clamping groove
170. Chuck Y-axis feed servo mount 171, chuck Y-axis feed servo motor 173, gear 174, chuck Y-direction rack 175, chuck Y-direction guide rail 176, chuck Y-direction slider 177, guide rail receiving groove 178, chuck Y-direction slider fixing plate 179, and Y-direction mounting bar
180. Mounting seat body 181, gear accommodating cavity 182 and Y-direction clearance groove
190. Drag chain 191, drag chain mounting seat 192 and drag chain bracket
200. Groove plate 201, cover plate 202, two connecting plates 203, connecting plate 204, drag chain groove 205 and piston rod
210. X-direction positioning cylinder 211, Y-direction positioning strip 212 and positioning seat
220. Fixed beam 221, support base 222, two guide rods 223, guide holes 224, X-direction positioning cylinder support frame 225 and two guide piece support frames
240. Small plate positioning mechanism 241, positioning piece 243, positioning bracket 245, positioning part 246, positioning piece accommodating groove
247. Adjusting through hole 248 and adjusting handle
301. Sucker 302 and vacuum pipeline following moving assembly
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Example 1
As shown in fig. 1, a gantry numerical control machining center comprises a base 1, a gantry device 2, a left machine head 3, a right machine head 4 and a workbench device 5.
The workbench device 5 is arranged on the base 1, and the portal frame device 2 is arranged together with the base 1 in a manner of sliding back and forth in the X direction; the left machine head 3 and the right machine head 4 can be arranged on the beam in a reciprocating Y-direction sliding manner, are arranged in parallel at the left and the right, and are arranged right above the workbench device 5.
As shown in fig. 2, the base 1 includes a plurality of square tubes 11 arrayed in the X direction, a square frame-shaped mounting frame 12 fixed to the plurality of square tubes 11, and a Y-direction reinforcing square tube 13 fixed to the inside of the mounting frame 12.
As shown in fig. 1 and 2, the gantry apparatus 2 includes a left column 21, a right column 22, and a beam 23 having two ends respectively fixed to the tops of the left column 21 and the right column 22. The left upright post 21, the beam 23 and the right upright post 22 form a portal frame 24, and the beam 23 is positioned above the base 1 and spans the base 1. The portal frame device 2 further comprises an X-axis feeding left servo mechanism for driving the portal frame 24 to slide back and forth in the X direction relative to the mounting frame 12 of the base 1, an X-axis feeding left mechanical transmission mechanism and an X-axis feeding left guide mechanism which are arranged between the mounting frame 12 and the left upright post 21, an X-axis feeding right servo mechanism for driving the portal frame 24 to slide back and forth in the X direction relative to the mounting frame 12 in synchronization with the X-axis feeding left servo mechanism, and an X-axis feeding right mechanical transmission mechanism and an X-axis feeding right guide mechanism which are arranged between the mounting frame 12 and the right upright post 22.
The X-axis feeding left servo mechanism comprises a left servo motor 25 arranged at the bottom position of the left upright post 21. The left X-axis feeding mechanical transmission mechanism comprises a left gear (not shown) connected with a driving shaft of the left servo motor 25, and a left X-direction rack 26 which is arranged on the left side surface of the mounting frame 12 of the base 1 and is meshed with the left gear. The X-axis feed left guide mechanism includes a left X-guide rail 27 mounted on the left side surface of the mounting frame 12, and a left X-slider (not shown) mounted on the right side surface of the column bottom position and engaged with the left X-guide rail 27.
The X-axis feed right servo mechanism includes a right servo motor (not shown) mounted at a bottom position of the right column 22. The X-axis feeding right mechanical transmission mechanism includes a right gear (not shown) connected to a drive shaft of the right servo motor, and a right X-directional rack (not shown) mounted on the right side surface of the mounting frame 12 to be engaged with the right gear. The X-axis feed right guide mechanism includes a right X-directional guide rail (not shown) mounted on the right side of the mounting frame 12, and a right X-directional slider (not shown) mounted on the left side of the bottom position of the column and engaged with the right X-directional guide rail.
The left servo motor 25 drives a left gear, and drives a left X-direction slider on the portal frame 24 to move back and forth on a corresponding left X-direction rail 27 along the X direction through the meshing motion of the left gear and the left X-direction rack 26; similarly, the right servo motor drives the right gear, and drives the right X-direction slider on the gantry 24 to move back and forth along the X direction on the corresponding right X-direction linear guide rail through the meshing motion of the right gear and the right X-direction rack. The left servomotor 25 and the right servomotor move synchronously.
As shown in fig. 3 and 4, the left machine head 3 includes a left Y-direction slide assembly 31, a left Z-direction large slide assembly 32, a left drilling device 33, and a routing device 34.
The left Y-direction slide seat assembly 31 comprises a left Y-direction slide seat 35 arranged on the cross beam 23, a Y-axis feeding left servo mechanism for driving the left Y-direction slide seat 35 to slide back and forth relative to the cross beam 23Y, a Y-axis feeding left mechanical transmission mechanism and a Y-axis feeding left guide mechanism which are arranged between the cross beam 23 and the left Y-direction slide seat 35.
The left Y-slide 35 is of a plate-like structure.
The Y-axis feed left servo includes a Y-axis feed left servo motor 36, a Y-axis feed left servo mount (not shown). The left Y-axis feed servo mount is fixed above the side of the left Y-direction slide 35 facing the cross beam 23, and the left Y-axis feed servo motor 36 is fixed on the left Y-axis feed servo mount.
The Y-axis feed left mechanical transmission includes a left gear (not shown) and a Y-directional rack 37. The driving shaft of the left Y-axis feeding servo motor 36 passes through the left Y-axis feeding servo mechanism mounting seat to be connected with the left gear, and the Y-direction rack 37 is mounted on the top surface of the cross beam 23 and meshed with the left gear.
The Y-axis left feed guide mechanism comprises two Y-direction linear guide rails 38 which are vertically arranged and fixed on the side surface of the beam 23 facing to the left Y-direction slide seat 35 side, and a Y-direction slide block 39 which is fixed on the side surface of the left Y-direction slide seat 35 facing to the beam 23 side and matched with the Y-direction linear guide rails 38. The left Y-direction sliding block 39 is provided with a sliding chute 40, and the Y-direction linear guide rail 38 and the sliding chute 40 on the left Y-direction sliding block 39 are matched to form a Y-direction backward sliding structure.
The left Y-axis feed servo motor 36 drives the left gear and the left gear to move in mesh with each other relative to the Y-direction rack 37, thereby driving the left Y-direction slider 39 of the left Y-direction slide 35 to move along the Y-direction rail, so as to drag the left Y-direction slide 35 to reciprocate along the Y-direction on the cross beam 23.
The left Z-direction large sliding seat assembly 32 comprises a left Z-direction large sliding seat 51 with a plate-shaped structure, a Z-axis feeding left servo mechanism for driving the left Z-direction large sliding seat 51 to slide back and forth in a Z direction relative to the left Y-direction sliding seat 35, a Z-axis feeding left mechanical transmission mechanism and a Z-axis feeding left guide mechanism, wherein the Z-axis feeding left mechanical transmission mechanism and the Z-axis feeding left guide mechanism are arranged between the left Y-direction sliding seat 35 and the left Z-direction large sliding seat 51.
The Z-axis left feeding servo mechanism comprises a Z-axis left servo motor mounting seat 52, a Z-axis left feeding servo motor 50 and a Z-axis left servo motor mounting seat 52, wherein the Z-axis left feeding servo motor mounting seat 52 is mounted at the top of the left Y-direction sliding seat 35, and the Z-axis left feeding servo motor 50 is mounted on the Z-axis left servo motor mounting seat 52.
The Z-axis feeding left mechanical transmission mechanism comprises a left screw 53 and a left screw nut 54. The left lead screw nut 54 is fixed to the side of the left Z-direction large slide 51 on the left Y-direction slide 35 side. The driving shaft of the Z-axis feeding left servo motor 50 passes through the Z-axis left servo motor mounting seat 52 to be connected with the upper end of a left screw 53, and the lower end of the left screw 53 passes through a left screw nut 54 to be matched with the left screw nut 54.
The Z-axis feeding left guide mechanism comprises two left Z-direction guide rails 55 fixed on the front side surface of the left Y-direction sliding seat 35, and four left Z-direction sliding blocks (not shown) fixed on the rear side surface of the left Z-direction large sliding seat 51 and respectively matched with the two left Z-direction guide rails 55, wherein sliding grooves are formed in the left Z-direction sliding blocks, and the left Z-direction guide rails 55 are matched with the sliding grooves of the left Z-direction sliding blocks to form a Z-direction return sliding mechanism. The left Z-axis feeding servo motor 50 drives the left lead screw 53 to rotate, the left lead screw 53 drives the left lead screw nut 54, the left lead screw nut 54 drives the left Z-direction slider of the left Z-direction large slide seat 51 to move along the left Z-direction guide rail 55, so that the left Z-direction large slide seat 51 is dragged to reciprocate along the Z direction, and the left drilling device 33 and the routing device 34 are driven to reciprocate along the Z direction together.
The routing processing device 34 comprises a routing slide base 60 capable of moving up and down relative to the left Z-direction large slide base 51, a Z-direction routing electric spindle 61 installed on the routing slide base 60, and an electric spindle lifting mechanism for controlling the routing electric spindle 61 to move up and down on the left Z-direction large slide base 51. The routing carriage 60 is a plate-like structure.
The electric spindle lifting mechanism comprises a lifting cylinder 62 arranged on the left Z-direction large sliding seat 51, two Z-direction guide rails 63 fixed on the side surface of the left Z-direction large sliding seat 51 opposite to one side of the routing sliding seat 60, and four Z-direction sliders 64 fixed on the routing sliding seat 60 and respectively matched with the two Z-direction guide rails 63. The lower end of the piston rod of the lifting cylinder 62 is fixed to the top of the routing slide 60. The lifting cylinder 62 drives the Z-direction slider 64 on the routing slide 60 to lift on the Z-direction rail 63, and the routing slide 60 drives the routing electric spindle 61 to lift.
The left drilling device 33 comprises a left drill box fixing plate 70 fixed on the side surface of the left Z-direction large slide seat 51, which is far away from the left Y-direction slide seat 35, a left drill box 71 fixed on the side surface of the left drill box fixing plate 70, which is far away from the left Z-direction large slide seat 51, a plurality of drill bits 72 installed on the left drill box 71, a drill bit cylinder (not shown) for driving each drill bit 72 to pop up when being processed and retract when not being processed, and a drill bit driving mechanism (not shown) for driving the plurality of drill bits 72 to process. The plurality of drill bits 72 are mounted in the magazine with a spacing between each drill bit 72, and the plurality of drill bits 72 are arranged in an L-shape in both a transverse and longitudinal direction.
The routing device 34 is arranged on the left side of the left drilling device 33.
As shown in fig. 5 and 6, the right hand head 4 includes a right Y-slide assembly 80, a right Z-slide assembly 81, and a right drilling device 82.
The right Y-direction slide assembly 80 comprises a right Y-direction slide 83 arranged on the beam 23, a Y-axis feeding right servo mechanism for driving the right Y-direction slide 83 to slide back and forth relative to the beam 23 in the Y direction, a Y-axis feeding right mechanical transmission mechanism and a Y-axis feeding right guide mechanism which are arranged between the beam 23 and the right Y-direction slide 83.
The right Y-slide 83 is of a plate-like construction.
The Y-axis feeding right servo mechanism comprises a Y-axis feeding right servo motor 84 and a Y-axis feeding right servo mechanism mounting seat 85. A Y-axis feed right servo mount 85 is fixed to the right Y-direction slide 83 at a position above the side facing the cross beam 23, and a Y-axis feed right servo motor 84 is fixed to the Y-axis feed right servo mount 85.
The Y-axis feed right mechanical transmission mechanism comprises a right gear 86 and a Y-direction rack 37. The driving shaft of the Y-axis feeding right servo motor 84 passes through the Y-axis feeding right servo mechanism mounting seat 85 to be connected with a right gear 86, and the Y-direction rack 37 is mounted on the top surface of the cross beam 23 and meshed with the right gear 86.
The Y-axis feeding right guide mechanism comprises two Y-direction linear guide rails 38 which are vertically arranged and fixed on the side surface of the beam 23 facing to one side of the right Y-direction sliding seat 83, and a right Y-direction slide block 99 which is fixed on the side surface of the right Y-direction sliding seat 83 facing to one side of the beam 23 and matched with the Y-direction linear guide rails 38. The right Y-direction slider 99 is provided with a sliding slot 100, and the Y-direction linear guide rail 38 and the sliding slot 100 on the right Y-direction slider 99 are matched to form a Y-direction backward sliding structure.
The Y-axis feed right servo motor 84 drives the right gear 86, the right gear 86 to move in mesh with the Y-direction rack 37, and thus drives the right Y-direction slider 99 of the right Y-direction slider 83 to move along the Y-direction rail, so as to drag the right Y-direction slider 83 to reciprocate on the cross beam 23 in the Y-direction.
The right Z-direction sliding seat assembly 81 comprises a right Z-direction sliding seat 87 with a plate-shaped structure, a Z-axis feeding right servo mechanism for driving the right Z-direction sliding seat 87 to slide back and forth in a Z direction relative to the right Y-direction sliding seat 83, a Z-axis feeding right mechanical transmission mechanism and a Z-axis feeding right guide mechanism, wherein the Z-axis feeding right servo mechanism is arranged between the right Y-direction sliding seat 83 and the right Z-direction sliding seat 87.
The Z-axis feeding right servo mechanism comprises a Z-axis right servo motor mounting seat 88, a Z-axis feeding right servo motor 89 and a Z-axis right servo motor mounting seat 88, wherein the Z-axis feeding right servo motor mounting seat 88 is mounted at the top of the right Y-direction sliding seat 83, and the Z-axis feeding right servo motor 89 is mounted on the Z-axis right servo motor mounting seat 88.
The Z-axis feeding right mechanical transmission mechanism comprises a right screw rod 90 and a right screw rod nut 91. A right lead screw nut 91 is fixed to a side surface of the right Z-slide 87 on the side toward the right Y-slide 83. The driving shaft of the Z-axis feeding right servo motor 89 passes through the Z-axis right servo motor mounting seat 88 to be connected with the upper end of a right screw rod 90, and the lower end of the right screw rod 90 passes through a right screw rod nut 91 to be matched with the right screw rod nut 91.
The Z-axis feeding right mechanical transmission mechanism comprises two right Z-direction guide rails 92 fixed on the front side surface of the right Y-direction sliding seat 83, four right Z-direction sliding blocks 93 fixed on the rear side surface of the right Z-direction sliding seat 87 and respectively matched with the two right Z-direction guide rails 92, sliding grooves 94 are formed in the right Z-direction sliding blocks 93, and the right Z-direction guide rails 92 are matched with the sliding grooves 94 of the right Z-direction sliding blocks 93 to form a Z-direction return sliding mechanism. The Z-axis feeding right servo motor 89 drives the right screw rod 90 to rotate, the right screw rod 90 drives the right screw rod nut 91, the right screw rod nut 91 drives the right Z-direction slider 93 of the right Z-direction sliding seat 87 to move along the right Z-direction guide rail 92, so that the right Z-direction sliding seat 87 is dragged to reciprocate along the Z direction, and the right drilling device 82 is driven to reciprocate along the Z direction together.
The right drilling machining device 82 comprises a right drill box fixing plate 95 fixed on the side surface of the right Z-direction sliding seat 87, which is far away from the right Y-direction sliding seat 83, a right drill box 96 fixed on the side surface of the right drill box fixing plate 95, which is far away from the right Z-direction sliding seat 87, a plurality of drill bits 97 arranged on the right drill box 96, a drill bit cylinder for driving each drill bit 97 to pop up when machining and retract when not machining, and a drill bit driving mechanism for driving the plurality of drill bits 97 to machine. A plurality of drill bits 97 are installed in the right drill box 96 with a space between the drill bits 97, and the plurality of drill bits 97 are arranged in an L-shape in the transverse and longitudinal directions.
The left Y-direction sliding seat assembly 31 is arranged on the cross beam 23, and the Z-direction large sliding seat assembly is arranged on the left Y-direction sliding seat assembly 31, so that the gantry numerical control machining center can flexibly move according to machining requirements; and the wood processing device can also comprise a tool magazine capable of automatically changing tools, so that the tool changing of the routing processing device 34 of the wood processing device is more convenient, and the complicated steps of manual tool changing are avoided.
The gantry numerical control machining center comprises a left machine head 3 and a right machine head 4, synchronous work can be achieved, the machining device of the left machine head 3 is used on the machine in an alternating mode, the machining functions of high efficiency, high precision and high automation are achieved, and labor cost is greatly reduced.
Left aircraft nose 3 and right aircraft nose 4 can process alone, and simultaneously, left aircraft nose 3 alone can have drilling and routing processing function to timber concurrently, has realized a tractor serves two purposes, improves machining efficiency, saves the cost, especially the design of electric main shaft elevating system in the left aircraft nose 3 for left drilling processingequipment 33 and routing processingequipment 34's use mutually noninterfere, let whole left aircraft nose 3 structure inseparabler, the rigidity is stronger, and the cooperation precision is higher.
As shown in fig. 2 and 7 to 9, the table device 5 includes six sets of automatic fixed-displacement table mechanisms 101 arranged in the X direction, and X-direction positioning mechanisms 102 mounted on both sides of the automatic fixed-displacement table mechanisms 101 and positioning the plate member in the X direction.
Each group of automatic fixed displacement working table mechanisms 101 comprises a working table 103 which is arranged on a mounting frame 12 of the base 1 and can slide back and forth in the X direction relative to the mounting frame 12, a working table moving positioning mechanism 104 which is arranged between the base 1 and the working table 103, drives the working table 103 to slide back and forth in the X direction relative to the mounting frame 12 independently and automatically positions the working table 103 at a processing position, three suction cup mechanisms 105 which are independently installed on each worktable 103 in a Y-direction sliding manner, a suction cup moving and positioning mechanism 106 which is installed between each suction cup mechanism 105 and the worktable 103, drives the suction cups to slide on the worktable 103 in the Y-direction and positions the suction cups at processing positions, Y-direction positioning mechanisms 107 which are installed at two ends of each worktable 103 and position the plate in the Y-direction through up-and-down movement, and an electric circuit following and moving assembly 108 which is installed between the worktable 103 and the suction cup moving and positioning mechanism 106; one suction cup 105 corresponds to one suction cup moving and positioning mechanism 106; one table 103 corresponds to one table-moving positioning mechanism 104.
The worktable 103 of the automatic fixed displacement worktable mechanism 101 is driven by a worktable X-axis feeding servo mechanism of a worktable moving and positioning mechanism 104 to move the whole worktable 103 in the X direction and accurately position the X direction; then each workbench 103 is provided with a plurality of sucker mechanisms 105, one sucker mechanism 105 is driven by a sucker Y-axis feeding servo mechanism of a sucker moving and positioning mechanism 106 to move in the Y direction and accurately position in the Y direction, and the sucker mechanisms 105 adsorb plates, so that accurate and automatic adsorption and positioning of the workpieces are realized.
The working table device 5 comprises an automatic fixed-displacement working table mechanism 101, the positions of the working table 103 and the sucking disc mechanism 105 can be adjusted at any time according to the size of the plate, and the convenience of wood processing is further improved. Therefore, the device provides great convenience for the numerical control machining center to machine the plate, greatly improves the production efficiency of the machining center, reduces the amount of manual labor and reduces the production cost. The mutual independent removal of workstation 103 and sucking disc mechanism 105, workstation 103 and sucking disc mechanism 105 of automatic set displacement moving table mechanism 101 can be according to the size of processing work piece, and the position has been moved automatically, realizes the accurate location in the two-dimensional plane, and degree of automation is high, breaks through in the past that the manual work removes that sucking disc mechanism 105 is loaded down with trivial details and sucking disc location is inaccurate, has reduced the risk, has reduced the emergence of trouble. Previously, if the operator operates improperly, the suction cup mechanism 105 is easily damaged, the cutter is easily damaged, and safety accidents are easily caused.
The working platform 103 is of a profile structure.
The worktable moving and positioning mechanism 104 comprises a worktable X-axis feeding servo mechanism, a worktable X-axis feeding servo mechanism mounting seat 111, a worktable X-axis mechanical transmission mechanism and a worktable X-axis guiding mechanism.
The X-axis feeding servo mechanism of the workbench comprises an X-axis feeding servo motor 112 and a speed reducer 113. The X-axis feeding servo mechanism mounting base 111 of the workbench comprises a motor fixing plate 114 and a motor fixing base 115. The X-axis mechanical transmission mechanism of the workbench comprises a gear 116, a gear gland 117 and a X-direction rack 118 of the workbench matched with the gear 116. The X-axis guide mechanism of the table includes two X-direction guide rails 119 of the table, and two X-direction guide sliders 120 of the table respectively engaged with the two X-direction guide rails 119 of the table. The two table X-guide rails 119 are shared by all the table moving/positioning mechanisms 104.
The two X-direction guide rails 119 of the workbench are respectively fixed on the top surface of the mounting frame 12 of the base 1 and are arranged on the left side and the right side of the mounting frame 12. A table X-guide slider 120 is fixed to the bottom surface of each table 103 and directly above the two table X-guide rails 119. The table X-direction guide 120 is engaged with the table X-direction guide 119.
The motor fixing seat 115 is fixed at the bottom of the worktable 103 and near the end of one end of the worktable 103, and the motor fixing plate 114 is fixed at one side of the motor fixing seat 115. The speed reducer 113 is arranged on one side of the motor fixing plate 114, which is far away from the X-direction sliding block, the driving shaft of the X-axis feeding servo motor 112 is connected with the speed reducer 113, and the driving shaft of the speed reducer 113 penetrates through the motor fixing plate 114 and the motor fixing seat 115 to be sequentially arranged with the gear 116 and the gear gland 117. The axis of the gear 116 is Y-direction.
An X-direction inward mounting bar 121 which is vertically mounted is fixed on the inner side surface of the mounting frame 12 of the base 1 close to the X-axis feed servo motor 112, a workbench X-direction rack 118 is fixed on the X-direction inward mounting bar 121, and the teeth of the workbench X-direction rack 118 face downwards and are meshed with the gear 116.
The workbench 103 of the automatic fixed-displacement workbench mechanism 101 is driven by a workbench X-axis feeding servo mechanism, and the gear 116 and the helical rack, namely the transmission of the workbench X to the rack 118, are stable and efficient, and can realize the X-direction movement and the X-direction precise positioning. The worktable moving and positioning mechanism 104 with the structure ensures that the worktable device 5 has compact structure, convenient installation among parts, good stability, reliable action and simpler structure.
As shown in fig. 8 and 9, each chuck mechanism 105 includes a chuck 130, an airlock assembly, and a vacuum line following moving assembly 131.
The suction cup 130 includes a suction cup panel 140, a suction cup holder 141, and a sealing ring 142, wherein the suction cup panel 140 is mounted on the suction cup holder 141, and the sealing ring 142 is vertically abutted between the suction cup panel 140 and the suction cup holder 141 to form an air chamber between the suction cup panel 140 and the suction cup holder 141. The vacuum pipeline following moving assembly 131 is installed at one side of the sucker seat body 141; the vacuum line is in gas connection with the gas chamber following the moving assembly 131.
The airlock assembly includes a piston seat 150, a piston 151, a piston mounting plate 152, a wave washer 153, two hook plates 154, and a left stop (not shown).
The bottom of the suction cup holder body 141 is provided with an accommodating cavity 160, the piston seat 150 is installed in the accommodating cavity 160 of the suction cup holder body 141, and the wave-shaped elastic washer 153 is abutted between the suction cup holder body 141 and the piston seat 150 in an up-and-down manner.
An inner cavity 161 with a downward opening is arranged on the piston seat 150, and the piston mounting plate 152 is arranged at the bottom of the piston seat 150; the piston 151 is mounted within the interior chamber 161 of the piston seat 150. The piston seat 150 and the piston mounting plate 152 are disposed in the accommodating cavity 160 of the suction cup seat body 141. A sealed air chamber is formed between the piston seat 150 and the piston 151, and an air port (not shown) communicating with the sealed air chamber is also provided.
The hook plate comprises an upper hook part and a lower hook part; clamping grooves 162 are formed in two sides of the piston seat 150, clamping grooves 163 are formed in the workbench 103, the upper hook parts of the two hook plates 154 are clamped in the clamping grooves 162 of the piston seat 150, the lower hook parts are clamped in the clamping grooves 163 of the workbench 103, and the left hook plate 154 is tightly pressed by the left stopper; the right hook plate 154 is pressed by the vacuum line following moving assembly 131.
When the vacuum is not being pulled, the hook plate 154 can be moved on the worktable 103 in the Y direction at will to adjust the position suitable for absorbing the plate. When the vacuum pumping state is performed, the piston 151 moves upwards to drive the piston seat 150 to move upwards to compress the wave-shaped elastic washer 153, the hook plates 154 connected with the two sides of the piston seat 150 are dragged to move upwards to enable the hook plates 154 to be hooked on the workbench 103 tightly, the vacuum pumping is continuously performed, the sucker 130 can be fixed on the workbench 103 and cannot move, the air lock locking function is achieved, the movement inertia of the sucker 130 can be overcome, and the sucker 130 can be positioned more reliably at the working position.
The vacuum line following moving assembly 131 is connected to the airlock assembly through a vacuum suction tube.
The sucker moving and positioning mechanism 106 comprises a sucker Y-axis feeding servo mechanism, a sucker Y-axis feeding servo mechanism mounting seat 170, a sucker Y-axis mechanical transmission mechanism and a sucker Y-axis guiding mechanism.
The suction cup Y-axis feeding servo mechanism includes a suction cup Y-axis feeding servo motor 171 and a speed reducer 172. The suction cup Y-axis mechanical transmission mechanism comprises a gear 173 and a suction cup Y-direction rack 174 matched with the gear 173. The chuck Y-axis guide mechanism includes chuck Y-guide rails 175 and chuck Y-slides 176 that respectively engage with the chuck Y-guide rails 175.
A rail receiving groove 177 for receiving the chuck Y guide rail 175 is formed on the top surface of the table 103. The suction cup Y guide 175 is fixed in the guide receiving groove 177 of the top surface of the table 103. A suction cup Y-direction slider fixing plate 178 fixed to the bottom of the suction cup body 141 is provided on the bottom surface of each suction cup 130 and directly above the suction cup Y-direction rail 175, and the suction cup Y-direction slider 176 is fixed to the suction cup Y-direction slider fixing plate 178.
A Y-direction mounting bar 179 is fixed to a side surface of the table 103 on a side facing away from the vacuum line following moving assembly 131, a suction cup Y-direction rack 174 is fixed to a side surface of the Y-direction mounting bar 179 on a side facing away from the table 103, and teeth of the suction cup Y-direction rack 174 face a side facing away from the vacuum line following moving assembly 131.
The sucker Y-axis feeding servo mechanism mounting seat 170 comprises a mounting seat body 180, a gear accommodating cavity 181 with an opening facing the workbench 103 is arranged on the mounting seat body 180, and a Y-direction clearance groove 182 penetrating through the gear accommodating cavity 181 is arranged on one side of the mounting seat body 180 facing the workbench 103; the Y-direction clearance slot 182 is used to clear the Y-direction mounting bar 179 and the suction cup Y-direction rack 174. The speed reducer 172 is installed at the bottom of the mounting seat body 180, the motor is installed at the bottom of the speed reducer 172, the driving shaft of the speed reducer 172 passes through the bottom of the gear accommodating cavity 181 and is coaxially installed with the gear 173, and the gear 173 is accommodated in the gear accommodating cavity 181. The suction cup Y-axis feed servo mount 170 is fixed to a side surface of the suction cup base body 141 facing the suction cup Y-axis rack 174. The gear 173 is engaged with the suction cup Y-rack 174.
The sucker mechanism 105 is driven by a sucker Y-axis feeding servo mechanism, and a gear 173 and a straight rack, namely a Y-direction rack 174, are adopted, so that the sucker mechanism is efficient, economical, convenient to maintain and capable of realizing accurate positioning in the Y direction. The sucker moving and positioning mechanism 106 with the structure can realize automatic movement and automatic accurate positioning of the sucker 130, so that the automatic moving and positioning worktable 103 has a compact structure, is convenient to install among parts, has good stability and reliable action, and has a simpler structure. Particularly, the mounting base 170 of the Y-axis feeding servo mechanism of the sucker enables the Y-axis feeding servo mechanism of the sucker to be mounted very conveniently and to have a compact structure, and drives the sucker 130 to move reliably together.
The electric line following moving assembly 108 includes three tow chains 190, a tow chain mounting seat 191, and a tow chain bracket 192 corresponding to each suction cup 130. One drag chain 190 and one drag chain support 192 correspond to one suction cup mechanism 105, and the drag chain support 192 is fixed on the bottom surface of the corresponding suction cup Y-axis feeding servo mechanism mounting seat 170.
A drag chain 190 is connected to the suction cup Y-axis feed servo motor 171 and the reduction gear 172 of the suction cup mechanism 105.
The drag chain mounting seat 191 comprises a groove plate 200, a cover plate 201, two connecting plates 202 and two connecting plates 203. The slot plate 200 is mounted on the side of the table 103 facing away from the vacuum line following movement assembly 131 by means of two connection plates 202, 203. The groove plate 200 is provided with tow chain grooves 204 which are matched with the tow chains 190 one by one. The tow chain 190 is mounted in a corresponding tow chain slot 204 and one end of the tow chain 190 is mounted on the tow chain bracket 192. The cover plate 201 is fixed at one end of the groove plate 200 far away from the drag chain bracket 192, and the drag chain 190 is arranged between the cover plate 201 and the groove plate 200.
The electric circuit following moving assembly 108 with the structure has simple structure and reliable action, and leads the electric wire connected with the Y-axis feeding servo mechanism of the sucker not to be broken down due to winding.
The Y-direction positioning mechanism 107 is a Y-direction positioning air cylinder, the Y-direction positioning air cylinder is installed on the workbench 103, and a piston rod 205 of the Y-direction positioning air cylinder faces upwards. When positioning is needed, the piston rod 205 of the Y-direction positioning cylinder extends out of the top surface of the protruding sucker 130 to position the plate in the Y direction; when machining is needed, the piston rod 205 of the Y-direction positioning cylinder retracts to be lower than the top surface of the sucking disc 130, so that the machining device of the upper machine head is prevented from interfering with the Y-direction positioning cylinder.
As shown in fig. 2 and 10, the X-direction positioning mechanism 102 includes an X-direction positioning cylinder 210, a Y-direction positioning bar 211, a positioning base 212, and a positioning guide mechanism installed between the Y-direction positioning bar 211 and the positioning base 212.
The positioning seat 212 includes a fixed beam 220 having a square tube structure, two supporting seats 221 installed on bottom surfaces of both ends of the fixed beam 220, an X-direction positioning cylinder supporting frame 224 and two guide supporting frames 225 installed on a side surface of the fixed beam 220 facing the automatic fixed displacement table mechanism 101. The positioning guide mechanism includes two guide rods 222 fixed on two guide support frames 225, and the positioning bar 211 is provided with guide holes 223 matched with the two guide rods 222.
Two support bases 221 are fixed to the top surfaces of the left and right sides of the mounting frame 12 of the base 1.
The positioning bar 211 is movably mounted on the two guide rods 222 up and down through the guide holes 223 thereon. The X-direction positioning cylinder 210 is arranged on the X-direction positioning cylinder supporting frame 224, a piston rod of the X-direction positioning cylinder 210 faces upwards and is arranged right below the positioning strip 211, and the positioning strip 211 is driven to ascend through the extension of the piston rod of the X-direction positioning cylinder 210 and protrudes out of the top surface of the sucker 130.
The X-direction positioning mechanism 102 further comprises a small plate positioning mechanism 240; the small plate positioning mechanism 240 includes a positioning member 241, a positioning member 90-degree turnover mechanism, and a positioning bracket 243 mounted on the top surface of the fixed beam 220 and protruding out of the fixed beam 220 toward the side of the automatic fixed-displacement table mechanism 101. The positioning member 241 includes a mounting portion (not shown) and a positioning portion 245. The positioning bracket 243 is provided with a positioning member receiving groove 246 for receiving the positioning member 241. The positioning member 90-degree turnover mechanism comprises Y-direction adjusting through holes 247 and adjusting handles 248 which are arranged on the side walls of two sides of the positioning member accommodating groove 246, and the adjusting through holes 247 comprise turnover arc sections distributed on an XZ plane. The mounting portion of the positioning member 241 is pivotally connected to the sidewalls of the positioning member receiving groove 246 by a shaft at an end thereof away from the positioning portion 245. The shaft of the adjustment handle 248 is fixed to one end of the mounting portion of the positioning member 241 near the positioning portion 245 through the adjustment through hole 247. When the small plate is not needed to be positioned, the shaft of the adjusting handle 248 moves from bottom to top along the adjusting through hole by manually adjusting the handle 248, so that the positioning part 245 is turned by 90 degrees and is parallel to the horizontal plane and is accommodated in the positioning part accommodating groove 246. When the small plate is required to be positioned, the handle 248 is manually adjusted, the shaft of the handle 248 moves from top to bottom along the adjusting through hole, so that the positioning part 245 is turned by 90 degrees and is vertical to the horizontal plane and protrudes out of the top surface of the suction cup 130 to position the small plate.
In this embodiment, the number of the suction cup mechanisms and the automatic fixed-displacement table mechanisms is not limited thereto.
The gantry numerical control machining center is ingenious and reasonable in overall structural design, convenient to install among parts, good in stability and reliable in action.
Example 2
As shown in fig. 11, unlike embodiment 1, each chuck mechanism includes a chuck 301, and a vacuum line following moving member 302.
The sucker moving and positioning mechanism utilizes the self-locking function of the sucker Y-axis feeding servo mechanism and the sucker Y-axis feeding transmission mechanism, can realize the automatic positioning of the sucker without an air lock assembly, can also realize the automatic movement of the sucker, greatly simplifies the structure and greatly improves the automation degree.
Example 3
As shown in fig. 12, a control system of a CNC processing center includes a CNC controller, a data bus, a control bus, an address bus connected with the CNC controller, a servo control unit, a left handpiece control unit, a right handpiece control unit, a workbench control unit, a vacuum control unit, a strong and weak current control unit, a human-machine interaction interface unit, and a communication unit, which are connected in parallel to the data bus, the control bus, and the address bus for bidirectional control.
A plurality of standardized CNC controller interfaces are arranged on the CNC controller; the servo control unit, the left machine head control unit, the right machine head control unit, the workbench control unit, the vacuum control unit, the strong and weak current control unit, the man-machine conversation interface unit and the communication unit are modules which are combined by an open type and modular structure; the standard connector matched with the CNC controller interface is arranged and can be connected with the CNC controller interface in a bidirectional control parallel mode.
A CNC (numerically controlled machine) controller refers to a program control system of a computer numerically controlled machine tool (computer numerical control).
The control system is divided into large modules, namely a servo control unit, a left machine head control unit, a right machine head control unit, a workbench control unit, a vacuum control unit, a strong and weak current control unit, a man-machine conversation interface unit, a communication unit and the like, and each module is divided into a plurality of small control units.
The large module can be designed into an open type and modular structure, has a standardized interface, can be connected with a standardized interface and a remote I/O on a CNC controller, and has universality of hardware and software, high compatibility and strong transportability.
Each module has independent function, the modules of the same kind can be reused and exchanged in a product family, and the arrangement and combination of the related modules can form a final product.
Products with different requirements can be created by selecting and matching the combination configuration of various functional modules, so that the customization requirements of customers are met, and the requirements of the customers on different configurations and the market requirements can be flexibly met; the reuse of the similarity can facilitate the purchasing, manufacturing and maintenance of the whole product.
Modularization, the functions are decomposed, and the coupling performance between the functions is reduced. Therefore, in order to replace a certain module to improve the quality or efficiency, the whole structure cannot be changed, and the workload can be obviously reduced only by changing the corresponding module, so that the application of modularization is the ultimate design of each industry. The modular structure thus has interoperability and portability between machine tools; by providing a standardized interface, communication and interaction mechanism, different function module functions are operated on a system platform by a standard application program interface, and equal mutual operation capability is obtained to coordinate work; the unified data format, interaction model and control mechanism are applied, each function module forming the system can come from different developers, and each function module can run on hardware platforms provided by different suppliers through consistent equipment interfaces, thereby being beneficial to shortening the development period, controlling the development cost and the like.
The advantage of dividing each module into a plurality of small control units is:
1. the structure is more reasonable: the control system of the machine adopts each module to be divided into a plurality of small control units, the layout of each small control unit is more reasonable and scientific, the functions of each part can be well exerted, and the service life of the machine is prolonged.
2. Designing an optimization control system: each part of the control system is designed into a small control unit, and then a plurality of small control units are combined into a module, so that the design of the control system can be simplified and optimized.
3. The maintenance is simpler: each part of the machine is a small control unit, the machine has problems, the diagnosis can be quickly carried out, only the corresponding small control unit needs to be replaced, and the operation is simple.
As shown in fig. 13, the servo control unit includes an X-axis feeding left servo system for driving the gantry to slide back and forth in the X direction along the base, an X-axis feeding right servo system for driving the gantry to slide back and forth in the X direction along the base in synchronization with the X-axis feeding left servo system, a Y-axis feeding left servo system for driving the processing device of the left head to slide back and forth in the Y direction along the beam, a Y-axis feeding right servo system for driving the processing device of the right head to slide back and forth in the Y direction along the beam, a Z-axis feeding left servo system for driving the processing device of the left head to slide back and forth in the Z direction, and a Z-axis feeding right servo system for driving the processing device of the right head; the X-axis feeding left servo system, the X-axis feeding right servo system, the Y-axis feeding left servo system, the Y-axis feeding right servo system, the Z-axis feeding left servo system and the Z-axis feeding right servo system are all semi-closed loop feeding servo systems and are connected with a data bus, a control bus and an address bus which are connected with a CNC controller in a bidirectional control and parallel mode.
The Y-axis feeding left servo system comprises an A/D module, a D/A module, a servo driving device, a servo motor, a position detection device, a speed detection device, a position feedback module and a speed feedback module which are connected in series in sequence in a bidirectional control mode, wherein the A/D module and the D/A module are connected with a data bus, a control bus and an address bus which are connected with a CNC (computerized numerical control) controller in a bidirectional control mode and are connected in parallel, and the position feedback module and the speed feedback module are connected with the data bus, the control bus and the address bus which are connected with the CNC controller in a bidirectional control mode and are connected in;
the structure, control mode and connection mode of the Y-axis feeding right servo system, the X-axis feeding left servo system, the X-axis feeding right servo system, the Z-axis feeding left servo system and the Z-axis feeding right servo system are the same as those of the Y-axis feeding left servo system.
The A/D module is a module for converting analog signals into digital signals; the D/A module is a module for converting digital signals into analog signals. The I/O module is an input/output module.
The equipment comprises 6 feeding servo systems, wherein an X-axis feeding left servo system and an X-axis feeding right servo system respectively drive the portal frame and the portal frame to move, the X-axis feeding right servo system is a driven system of the X-axis feeding left servo system, and the two feeding servo systems move synchronously. The Y-axis feeding left servo system and the Y-axis feeding right servo system respectively drive the left machine head and the right machine head to move along the cross beam, and the left machine head and the right machine head move independently; the Z-axis feeding left servo system and the Z-axis feeding right servo system drive the left machine head and the right machine head to move vertically, and the left machine head and the right machine head also move independently.
The A/D module is a module for converting analog signals into digital signals; the D/A module is a module for converting digital signals into analog signals.
The CNC controller is connected with all feeding servo systems through a Mechatrolink-II field bus, and the fastest speed is 10 Mbit/s.
The servo motor of the feed servo system is connected to a gear, a lead screw, or the like, and converts a rotational motion into a linear displacement of the moving member through these mechanical transmission mechanisms, thereby indirectly controlling the moving speed and the displacement of the moving member. This structure is called "semi-closed loop control" because only the angular displacement of the motor is closed-loop controlled and the final output linear displacement is not closed-loop controlled. The semi-closed loop feeding servo system is simple in structure, convenient to debug, high in equipment stability and high in precision, the machining precision of the semi-closed loop feeding servo system can be within 0.02mm and exceeds the machining precision of the woodworking standard by 0.1mm, and the precision requirement of wood machining can be completely met.
As shown in fig. 14, the left handpiece control unit includes an electric spindle driving unit, an electric spindle lifting control unit, a drill driving unit, and a plurality of drill units, which are connected in parallel with a data bus, a control bus, and an address bus connected to the CNC controller for bidirectional control.
The drill bit driving unit comprises a three-phase motor, a motor driving device, an A/D module and a D/A module, wherein the A/D module and the D/A module are connected with a data bus, a control bus and an address bus in a bidirectional control and parallel mode, the motor driving device is connected with the A/D module and the D/A module in a bidirectional control and series mode, the three-phase motor is connected with the motor driving device in a unidirectional control and series mode, and the motor driving device controls the three-phase motor in a unidirectional mode.
The structure, control mode and connection mode of the electric spindle driving unit and the drill bit driving unit are the same, and a motor driving device of the electric spindle driving unit is a frequency converter installed in an electrical cabinet.
The electric spindle lifting control unit comprises an I/O module, an electromagnetic valve, a double-acting air cylinder with a built-in magnetic ring and two sensors arranged along the axial direction of the air cylinder; the I/O module is connected with the data bus, the control bus and the address bus in a bidirectional control and parallel mode, the electromagnetic valve is connected with the I/O module in a unidirectional control and series mode, the I/O module controls the electromagnetic valve in a unidirectional mode, the air cylinder is connected with the electromagnetic valve in a unidirectional control and series mode, the electromagnetic valve controls the air cylinder in a unidirectional mode, the two sensors are connected with the I/O module in a unidirectional control and parallel mode, and the sensors control the I/O module in a unidirectional mode.
The drill bit unit comprises an I/O module, an electromagnetic valve and a cylinder; the I/O module is connected with the data bus, the control bus and the address bus in a bidirectional control parallel mode, the electromagnetic valve is connected with the I/O module in a unidirectional control series mode, the I/O module controls the electromagnetic valve in a unidirectional mode, the air cylinder is connected with the electromagnetic valve in a unidirectional control series mode, and the electromagnetic valve controls the air cylinder in a unidirectional mode.
The left machine head is driven by an X-axis feeding left servo system and a Z-axis feeding left servo system, and is provided with an electric spindle machining device for manually changing a tool and a drill box.
The electric spindle machining device is controlled by a frequency converter in an electric cabinet driven by a CNC control system, so that the functions of speed regulation and forward and reverse rotation are achieved. The machine can carry out processing such as edge following, milling, space carving and the like on the workpiece.
The electric spindle is provided with a lifting cylinder, and when the electric spindle needs to be used, the cylinder extends out to enable the electric spindle cutter to be located at a lowest set position (lower than a drill bit of the drilling box) so as to avoid interference between the drill bit on the drilling box and a workpiece when the electric spindle cutter is machined. The action of the air cylinder is finished by reading an NC command through the CNC controller and sending a signal to the electromagnetic valve through the control bus to control the action of the electromagnetic valve. The lifting of the electric spindle machining device is driven by the cylinder, so that mutual interference between an electric spindle cutter and a drill bit of a drill box can be avoided during machining, the lifting cylinder is a double-acting cylinder with a built-in magnetic ring, and two sensors are arranged along the axis direction of the cylinder, so that the electric spindle machining device can only stop at a set upper position and a set lower position under the driving of the lifting cylinder, the action is reliable, the mutual interference between the electric spindle cutter and the drill bit of the drill box can be completely avoided, and the lifting driving unit is simple in structure and low in cost.
The drill box is driven by a control system to drive a three-phase motor to achieve the function of positive rotation, 14 vertical drills and 5 groups of horizontal drills are arranged on the drill box, and the front, the back, the left, the right and the front of a workpiece can be punched. A set of electromagnetic valve group is arranged above the drill box, and each drill bit cylinder is controlled by one electromagnetic valve. The CNC controller judges which drill bit is used for machining according to the NC instruction, and sends a signal to the electromagnetic valve through the control bus to control the action of the electromagnetic valve, so that the drill bit required to be used is ejected. The control mode of the electromagnetic valve group has the advantages of short gas circuit, stable control and low maintenance cost because the electromagnetic valve is arranged on the drill box.
As shown in fig. 15, the right handpiece control unit includes a drill driving unit and a plurality of drill units connected in parallel with a data bus, a control bus and an address bus connected to the CNC controller for bidirectional control.
The drill bit driving unit of the right handpiece and the drill bit driving unit of the left handpiece have the same structure, control mode and connection mode.
The drill bit unit of the right handpiece and the drill bit unit of the left handpiece have the same structure, control mode and connection mode.
The right machine head is driven by an X-axis feeding right servo system and a Z-axis feeding right servo system, and is provided with an electric spindle machining device for manually changing a tool and a drill box.
The drill box is driven by a control system to drive a three-phase motor to achieve the function of positive rotation, 14 vertical drills and 5 groups of horizontal drills are arranged on the drill box, and the front, the back, the left, the right and the front of a workpiece can be punched.
A set of electromagnetic valve group is arranged above the drill box, and each drill bit cylinder is controlled by one electromagnetic valve. The CNC controller judges which drill bit is used for machining according to the NC instruction, and sends a signal to the electromagnetic valve through the control bus to control the action of the electromagnetic valve, so that the drill bit required to be used is ejected. The control mode of the electromagnetic valve group has the advantages of short gas circuit, stable control and low maintenance cost because the electromagnetic valve is arranged on the drill box.
As shown in fig. 16, the control system further includes an industrial personal computer, a PLC, a data bus, a control bus, an address bus, and an ethernet switch.
The CNC controller, the industrial personal computer and the PLC are all connected with the industrial Ethernet switch in a bidirectional control and parallel mode; and a factory local area network is also connected in parallel in a bidirectional control mode on the industrial Ethernet switch.
A PLC, a Programmable logic Controller (Programmable logic Controller), is an industrial control device based on computer technology.
As shown in fig. 17, the table control unit includes a plurality of sets of automatic positioning moving table control units, and two sets of X-direction positioning control units disposed on both sides of the automatic positioning moving table for performing X-direction positioning on the workpiece.
Each group of automatic positioning mobile workbench control units comprises a group of workbench X-axis feeding servo systems for controlling the automatic positioning mobile workbench to slide back and forth in the X direction, a plurality of groups of sucker Y-axis feeding servo systems, and two groups of Y-direction positioning control units which are arranged at two ends of the automatic positioning mobile workbench and used for carrying out Y-direction positioning on the workpiece; a group of sucker Y-axis feeding servo systems control one sucker to slide back and forth in the Y direction; the X-axis feeding servo system and the sucker Y-axis feeding servo system of the workbench are connected with a data bus, a control bus and an address bus which are connected with the PLC in parallel.
The X-axis feeding servo system of the workbench comprises an A/D module, a D/A module, a servo driving device, a servo motor, a position detection device, a speed detection device, a position feedback module and a speed feedback module which are connected in series in sequence in a bidirectional control mode, wherein the A/D module and the D/A module are connected with a data bus, a control bus and an address bus which are connected with a PLC in a bidirectional control parallel mode, and the position feedback module and the speed feedback module are connected with the data bus, the control bus and the address bus which are connected with the PLC in a bidirectional control parallel mode.
The structure, control mode and connection mode of the sucker Y-axis feeding servo system are the same as those of the workbench X-axis feeding servo system.
The sucker Y-axis feeding servo system and the workbench X-axis feeding servo system are both semi-closed loop feeding servo systems.
The workbench control unit is realized by driving 6 workbench X-axis feeding servo systems and one workbench X-axis feeding servo system corresponding to three sucker Y-axis feeding servo systems through a CanOPEN bus by a PLC. The servo motors of the X-axis feeding servo system of the workbench and the Y-axis feeding servo system of the sucker use absolute value encoders, and the zero resetting is not needed each time.
The control mode of the workbench control unit uses 24 servo motors, and 24 servo drivers are arranged in the electric cabinet, so that the workbench control unit has the advantages that one driver drives one servo, the problem of user troubleshooting is facilitated, and the after-sale maintenance cost is reduced.
The control software of the PLC installed on the numerical control machining center can calculate the optimal positions of the workbench and the suckers according to the sizes of the workpieces at each time, position information is transmitted to the PLC through the Ethernet, and the PLC controls the corresponding automatic positioning movable workbench and the suckers to rapidly and simultaneously move to quickly position the workpieces.
As shown in fig. 18, the X-direction positioning control unit includes a double-acting cylinder with a built-in magnetic ring, a sensor mounted on the cylinder, an electromagnetic valve, and an I/O module; the I/O module is connected with a data bus, a control bus and an address bus which are connected with the CNC controller in a bidirectional control mode in parallel, the electromagnetic valve is connected with the I/O module in a unidirectional control series mode, the I/O module controls the electromagnetic valve in a unidirectional mode, the air cylinder is connected with the electromagnetic valve in a unidirectional control series mode, the electromagnetic valve controls the air cylinder in a unidirectional mode, the sensor is connected with the I/O module in a unidirectional control series mode, and the sensor controls the I/O module in a unidirectional mode.
The Y-direction positioning control unit comprises more than one double-acting air cylinder with built-in magnetic rings and a sensor arranged on each air cylinder.
A solenoid valve, an I/O module; the system comprises an I/O module, a data bus, a control bus and an address bus which are connected with a CNC controller, wherein the I/O module is in bidirectional control parallel connection with the data bus, the control bus and the address bus which are connected with the CNC controller, an electromagnetic valve is in unidirectional control series connection with the I/O module, the I/O module is in unidirectional control electromagnetic valve, three cylinders which are connected in parallel are connected with the electromagnetic valve in unidirectional control, the electromagnetic valve is in unidirectional control cylinder, three sensors which are connected in parallel are connected with the I/O module in unidirectional control series connection.
The worktable control unit comprises two groups of X-direction positioning control units for carrying out X-direction positioning on the workpiece and four groups of Y-direction positioning control units for carrying out Y-direction positioning on the workpiece. The two groups of X-direction positioning control units and the four groups of Y-direction positioning control units are connected in parallel with a data bus, a control bus and an address bus which are connected with the CNC controller.
Two groups of X-direction positioning control units: the CNC controller controls a positioning cylinder through an electromagnetic valve via an I/O module, and a sensor mounted on the positioning cylinder detects a cylinder state and feeds back the cylinder state to the CNC controller through the I/O module.
Four sets of Y-direction positioning control units: the CNC controller controls three positioning cylinders through one solenoid valve via an I/O module, and the states of the cylinders are detected by sensors mounted on the three positioning cylinders and fed back to the CNC controller through the I/O module.
As shown in fig. 19, the vacuum control unit includes a vacuum pump control unit, a left area vacuum negative pressure detection unit of the workbench, and a right area vacuum negative pressure detection unit of the workbench, which are connected in parallel with a data bus, a control bus, and an address bus connected to the CNC controller.
The vacuum pump control unit comprises a thermal relay, a contactor, a vacuum pump three-phase motor, a left vacuum electromagnetic valve, a right vacuum electromagnetic valve and a plurality of suckers; the plurality of suckers are divided into two groups; the thermal relay is connected with a data bus, a control bus and an address bus which are connected with a CNC controller in a bidirectional control parallel mode, the contactor is connected with the thermal relay in a bidirectional control series mode, the vacuum pump three-phase motor is connected with the contactor in a unidirectional control series mode, the left vacuum solenoid valve is connected with the vacuum pump three-phase motor in a unidirectional control parallel mode, a group of the plurality of suckers is connected with the left vacuum solenoid valve in a unidirectional control parallel mode, the right vacuum solenoid valve is connected with the vacuum pump three-phase motor in a unidirectional control parallel mode, and the other group of the plurality of. The contactor controls the three-phase motor of the vacuum pump in a one-way mode; the vacuum pump three-phase motor unidirectionally controls the left vacuum electromagnetic valve, and the left vacuum electromagnetic valve unidirectionally controls a group of suckers; the vacuum pump three-phase motor controls the right vacuum electromagnetic valve in a one-way mode, and the right vacuum electromagnetic valve controls the other group of suckers in a one-way mode.
The vacuum negative pressure detection unit of the left area of the workbench comprises an I/O module and a vacuum detection device; the I/O module is connected with a data bus, a control bus and an address bus which are connected with the CNC controller in a bidirectional control and parallel mode, the vacuum detection device is connected with the I/O module in a unidirectional control and series mode, and the vacuum detection device controls the I/O module in a unidirectional mode. The structure, the control mode and the connection mode of the workbench right area vacuum negative pressure detection unit and the workbench left area vacuum negative pressure detection unit are the same.
The vacuum unit comprises a thermal relay, a contactor, a vacuum pump, a vacuum electromagnetic valve, a sucker, a vacuum detection device and the like. The thermal relay and the contactor are positioned in the independent electrical cabinet; the vacuum pump is positioned at the rear side of the machine body and is independent from the machine body, and the vacuum pump is connected with a sucker positioned on the workbench; the vacuum solenoid valve is positioned at the inner side of the frame, and the two vacuum valves respectively control the 9 suckers at the left station and the right station; the vacuum detection device is also positioned on the inner side of the frame and connected with the vacuum tube, and can detect whether vacuum negative pressure exists.
The CNC controller controls the starting and stopping of the vacuum pump and the suction and disconnection of the vacuum solenoid valve through the I/O module according to the input NC program code, the vacuum detection device can monitor the vacuum pressure in real time, if the CNC controller controls the starting of the vacuum pump and controls the suction of the vacuum solenoid valve, the vacuum detection device does not feed back a vacuum negative pressure signal of the CNC controller through the I/O module, and the CNC controller can give an alarm.
Above, it is only the preferred embodiment of the present invention, not to limit the present invention in any form, although the present invention has been disclosed with the preferred embodiment, but not to limit the present invention, those skilled in the art can make modifications or equivalent embodiments with equivalent changes when using the above disclosed technical content without departing from the technical scope of the present invention, but all the modifications, substitutions, improvements and the like made to the above embodiments within the spirit and principle of the present invention still belong to the protection scope of the technical scheme of the present invention.
The utility model discloses in, preceding, back, left and right are for writing the convenience, are not to the restriction of protection scope, if left aircraft nose and right aircraft nose can exchange completely.

Claims (10)

1. A gantry numerical control machining center comprises a base, a gantry device, a machine head and a workbench device;
the working table device is arranged on the base, and the portal frame device can be arranged together with the base in a back-and-forth X-direction sliding manner; the machine head can be arranged on the beam in a reciprocating Y-direction sliding manner;
the workbench device comprises a plurality of groups of moving workbench mechanisms which are arranged on the base along the X direction, and X-direction positioning mechanisms which are arranged on the base, arranged at two sides of the moving workbench mechanisms and used for positioning the plate in the X direction;
the method is characterized in that:
the machine head comprises a left machine head and a right machine head; the left machine head and the right machine head are arranged in parallel left and right and are arranged right above the workbench device;
the movable worktable mechanism is an automatic fixed-displacement worktable mechanism; each group of automatic fixed displacement working table mechanisms comprises a working table which is arranged on the base and can slide in the X direction back and forth relative to the base, a working table moving and positioning mechanism which is arranged between the base and the working table and can drive the working table to slide in the X direction back and forth relative to the base independently and automatically position the working table at a processing position, a plurality of sucker mechanisms which can be arranged on each working table independently in a Y direction sliding manner, a sucker moving and positioning mechanism which is arranged between each sucker mechanism and the working table and drives the sucker to slide in the Y direction on the working table and positions the sucker at the processing position, a Y direction positioning mechanism which is arranged at the end part of each working table and carries out Y direction positioning on a plate through up-and-down movement, and an electric circuit following and moving assembly which is arranged between the working table and the sucker moving and positioning; one sucker corresponds to one sucker moving and positioning mechanism; one workbench corresponds to one workbench moving and positioning mechanism;
the workbench moving and positioning mechanism comprises a workbench X-axis feeding servo mechanism, a workbench X-axis feeding servo mechanism mounting seat, a workbench X-axis mechanical transmission mechanism and a workbench X-axis guide mechanism; the X-axis feeding servo mechanism of the workbench is arranged on an X-axis feeding servo mechanism mounting seat of the workbench, the X-axis feeding servo mechanism mounting seat of the workbench is arranged on the workbench, and an X-axis mechanical transmission mechanism of the workbench and an X-axis guide mechanism of the workbench are arranged between the workbench and the base;
each sucker mechanism comprises a sucker, and a vacuum pipeline follows the moving assembly; the sucker comprises a sucker panel, a sucker seat body and a sealing ring, wherein the sucker panel is arranged on the sucker seat body, and the sealing ring is vertically abutted between the sucker panel and the sucker seat body to form an air chamber between the sucker panel and the sucker seat body; the vacuum pipeline following moving assembly is arranged on one side of the sucker seat body; the vacuum pipeline following moving assembly is in gas connection with the gas chamber;
the sucker moving and positioning mechanism comprises a sucker Y-axis feeding servo mechanism, a sucker Y-axis feeding servo mechanism mounting seat, a sucker Y-axis mechanical transmission mechanism and a sucker Y-axis guide mechanism; the sucker Y-axis feeding servo mechanism is arranged on a sucker Y-axis feeding servo mechanism mounting seat, the sucker Y-axis feeding servo mechanism mounting seat is arranged on a sucker base body, and the sucker Y-axis mechanical transmission mechanism and the sucker Y-axis guide mechanism are arranged between the workbench and the sucker base body.
2. The gantry numerical control machining center of claim 1, characterized in that:
the base comprises a mounting frame; the X-axis feeding servo mechanism of the workbench comprises an X-axis feeding servo motor; the X-axis mechanical transmission mechanism of the workbench comprises a gear and a X-direction rack of the workbench, which is meshed with the gear; the X-axis guide mechanism of the workbench comprises two X-direction guide rails of the workbench and X-direction guide sliders of the workbench respectively matched with the two X-direction guide rails of the workbench; all the worktable moving and positioning mechanisms share two X-direction guide rails of the worktable; the two X-direction guide rails of the workbench are respectively fixed on the top surface of the mounting frame of the base and are arranged on the left side and the right side of the mounting frame; the X-direction guide slide block of the workbench is fixed with the bottom surface of the workbench and is arranged right above the X-direction guide rails of the two workbenches; a driving shaft of the X-axis feeding servo mechanism of the workbench is coaxially arranged with a gear, and the axis of the gear is Y-direction; the X-direction rack of the workbench is fixed with the inner side surface of the mounting frame of the base; the teeth of the X-direction rack of the workbench face downwards and are meshed with the gear;
the sucker Y-axis feeding servo mechanism comprises a sucker Y-axis feeding servo motor; the sucker Y-axis mechanical transmission mechanism comprises a gear and a sucker Y-direction rack meshed with the gear; the sucker Y-axis guide mechanism comprises a sucker Y-direction guide rail and a sucker Y-direction sliding block respectively matched with the sucker Y-direction guide rail; a guide rail accommodating groove for accommodating the Y-direction guide rail of the sucker is formed in the top surface of the workbench; the sucker Y-direction guide rail is fixed in a guide rail accommodating groove on the top surface of the workbench; the Y-direction slide block of the sucker is fixed with the bottom of the sucker seat body; the sucker Y-direction rack is fixed with the side surface of one side of the workbench, which is away from the vacuum pipeline following moving assembly, and the teeth of the sucker Y-direction rack face the side away from the vacuum pipeline following moving assembly;
the mounting seat of the sucker Y-axis feeding servo mechanism comprises a mounting seat body, wherein a gear accommodating cavity with an opening facing the workbench is arranged on the mounting seat body, and a Y-direction clearance groove penetrating through the gear accommodating cavity is formed in one side of the mounting seat body facing the workbench; the Y-direction clearance groove is used for avoiding the Y-direction rack of the sucker;
a driving shaft of the sucker Y-axis feeding servo mechanism passes through the bottom of the gear accommodating cavity and is coaxially installed with the gear, and the gear is accommodated in the gear accommodating cavity; the sucker Y-axis feeding servo mechanism mounting seat is fixed on the side surface of the sucker seat body facing to the sucker Y-direction rack; the gear is meshed with the sucker Y-direction rack.
3. The gantry numerical control machining center of claim 1, characterized in that: the air lock assembly is also included;
the air lock assembly comprises a piston seat, a piston mounting plate, an elastic gasket, two hook plates on the left side and the right side and a left stopper;
the bottom of the sucker seat body is provided with an accommodating cavity, the piston seat is arranged in the accommodating cavity of the sucker seat body, and the elastic gasket is abutted between the sucker seat body and the piston seat up and down;
an inner cavity with a downward opening is arranged on the piston seat, and the piston mounting plate is arranged at the bottom of the piston seat; the piston is arranged in the inner cavity of the piston seat; the piston seat and the piston mounting plate are arranged in the accommodating cavity of the sucker seat body; a sealed air chamber is formed between the piston seat and the piston, and an air port communicated with the sealed air chamber is also arranged;
the hook plate comprises an upper hook part and a lower hook part; clamping grooves are formed in two sides of the piston seat, clamping grooves are formed in the workbench, the upper hook parts of the two hook plates are clamped into the clamping grooves of the piston seat, the lower hook parts are clamped into the clamping grooves of the workbench, and the hook plate on the left side is tightly pressed by the left stopper; the left hook plate is pressed tightly by the vacuum pipeline following the moving assembly.
4. The gantry numerical control machining center of claim 1, characterized in that:
the electric circuit following moving assembly comprises more than one drag chain and drag chain installation seats; the sucking disc mechanism corresponds to one drag chain, and the drag chain is connected with a sucking disc Y-axis feeding servo mechanism of the sucking disc mechanism;
the drag chain mounting seat is arranged on one side, away from the vacuum pipeline following moving assembly, of the workbench, and drag chain grooves matched with the drag chains one by one are formed in the drag chain mounting seat; the drag chain is arranged in the corresponding drag chain groove.
5. The gantry numerical control machining center of claim 1, characterized in that:
the X-direction positioning mechanism comprises an X-direction positioning cylinder, a Y-direction positioning strip, a positioning seat and a positioning guide mechanism arranged between the Y-direction positioning strip and the positioning seat;
the positioning seat is installed on the base, and X is installed on the positioning seat to the location cylinder, and Y is to the location strip movably from top to bottom on installing the positioning seat, through X to stretching out of the piston rod of location cylinder drive the top surface that the location strip rises and protrudes the sucking disc.
6. The gantry numerical control machining center of claim 1, characterized in that: the X-direction positioning mechanism also comprises a small plate positioning mechanism;
the small plate positioning mechanism comprises a positioning piece, a positioning piece 90-degree turnover mechanism and a positioning support which is arranged on the top surface of the positioning seat and protrudes out of the positioning seat towards one side of the automatic fixed displacement working table mechanism;
the positioning piece comprises a mounting part and a positioning part; a positioning piece accommodating groove for accommodating the positioning piece is arranged on the positioning bracket; the 90-degree turnover mechanism for the positioning piece comprises Y-direction adjusting through holes and adjusting handles which are arranged on the side walls of two sides of the positioning piece accommodating groove, and the adjusting through holes comprise turnover arc sections distributed on an XZ plane; one end of the mounting part of the positioning piece, which is far away from the positioning part, is rotatably pivoted on the side walls at the two sides of the positioning piece accommodating groove through a shaft.
7. The gantry numerical control machining center according to any one of claims 1 to 6, characterized in that:
the portal frame device comprises a left upright post, a right upright post and a beam, wherein two ends of the beam are respectively fixed at the tops of the left upright post and the right upright post; the left upright post, the beam and the right upright post form a portal frame, and the beam is positioned above the base and stretches across the base; the portal frame device also comprises an X-axis feeding left servo mechanism for driving the portal frame to slide back and forth in the X direction relative to the base, an X-axis feeding left mechanical transmission mechanism and an X-axis feeding left guide mechanism which are arranged between the base and the left upright post, an X-axis feeding right servo mechanism for driving the portal frame to slide back and forth in the X direction relative to the base synchronously with the X-axis feeding left servo mechanism, and an X-axis feeding right mechanical transmission mechanism and an X-axis feeding right guide mechanism which are arranged between the base and the right upright post;
the left machine head comprises a left Y-direction sliding seat assembly, a left Z-direction large sliding seat assembly, a left drilling device and a routing device;
the left Y-direction sliding seat assembly comprises a left Y-direction sliding seat arranged on the cross beam, a Y-axis feeding left servo mechanism for driving the left Y-direction sliding seat to slide back and forth relative to the cross beam Y, a Y-axis feeding left mechanical transmission mechanism and a Y-axis feeding left guide mechanism, wherein the Y-axis feeding left mechanical transmission mechanism and the Y-axis feeding left guide mechanism are arranged between the cross beam and the left Y-direction sliding seat;
the left Z-direction large sliding seat assembly comprises a left Z-direction large sliding seat with a plate-shaped structure, a Z-axis feeding left servo mechanism for driving the left Z-direction large sliding seat to slide back relative to the left Y-direction sliding seat in a Z direction, a Z-axis feeding left mechanical transmission mechanism and a Z-axis feeding left guide mechanism, wherein the Z-axis feeding left mechanical transmission mechanism and the Z-axis feeding left guide mechanism are arranged between the left Y-direction sliding seat and the left Z-direction large sliding seat;
the routing machining device comprises a routing sliding seat capable of lifting relative to a left Z-direction large sliding seat, a routing electric spindle arranged on the routing sliding seat, and an electric spindle lifting mechanism for controlling the routing electric spindle to lift on the left Z-direction large sliding seat;
the left drilling machining device comprises a left drill box, a plurality of drill bits, a drill bit cylinder and a drill bit driving mechanism, wherein the left drill box is fixed on the side surface of the left Z-direction large sliding seat, which is far away from one side of the left Y-direction sliding seat;
the right machine head comprises a right Y-direction sliding seat assembly, a right Z-direction sliding seat assembly and a right drilling device;
the right Y-direction sliding seat assembly comprises a right Y-direction sliding seat arranged on the cross beam, a Y-axis feeding right servo mechanism for driving the right Y-direction sliding seat to slide back and forth relative to the cross beam Y, a Y-axis feeding right mechanical transmission mechanism and a Y-axis feeding right guide mechanism which are arranged between the cross beam and the right Y-direction sliding seat;
the right Z-direction sliding seat assembly comprises a right Z-direction sliding seat with a plate-shaped structure, a Z-axis feeding right servo mechanism for driving the right Z-direction sliding seat to slide back and forth relative to the right Y-direction sliding seat in a Z direction, a Z-axis feeding right mechanical transmission mechanism and a Z-axis feeding right guide mechanism which are arranged between the right Y-direction sliding seat and the right Z-direction sliding seat;
the right drilling machining device comprises a right drill box, a plurality of drill bits, a drill bit cylinder and a drill bit driving mechanism, wherein the right drill box is fixed on the side surface of the right Z-direction sliding seat, which is far away from one side of the right Y-direction sliding seat, the drill bits are installed on the right drill box, the drill bit cylinder drives each drill bit to pop up and retract when the drill bit is machined, and the drill bit driving mechanism drives the drill bits to machine.
8. A control system comprising a gantry numerically controlled machining center according to claim 7, wherein: the control system comprises a CNC controller, a bus connected with the CNC controller, a servo control unit, a left machine head control unit, a right machine head control unit, a workbench control unit, a vacuum control unit, a strong and weak current control unit, a man-machine conversation interface unit and a communication unit, wherein the servo control unit, the left machine head control unit, the right machine head control unit, the workbench control unit, the vacuum control unit, the strong and weak current control unit, the workbench control unit and the communication;
the servo control unit comprises an X-axis feeding left servo system for driving the portal frame to slide back and forth along the base in the X direction, an X-axis feeding right servo system for driving the portal frame to slide back and forth along the base in the X direction in synchronization with the X-axis feeding left servo system, a Y-axis feeding left servo system for driving the machining device of the left machine head to slide back and forth along the cross beam in the Y direction, a Y-axis feeding right servo system for driving the machining device of the right machine head to slide back and forth along the cross beam in the Y direction, a Z-axis feeding left servo system for driving the machining device of the left machine head to slide back and forth in the Z direction, and a Z-axis feeding right servo system for driving the machining device of; the X-axis feeding left servo system, the X-axis feeding right servo system, the Y-axis feeding left servo system, the Y-axis feeding right servo system, the Z-axis feeding left servo system and the Z-axis feeding right servo system are all semi-closed loop feeding servo systems and are connected with a bus bidirectional control connected with the CNC controller in parallel;
the control system also comprises a PLC and a bus connected with the PLC; the CNC controller and the PLC are both controlled in a bidirectional mode and connected to the Ethernet switch in parallel; the worktable control unit comprises a plurality of groups of automatic positioning mobile worktable control units and X-direction positioning control units which are arranged at two sides of the automatic positioning mobile worktable and used for carrying out X-direction positioning on the workpiece;
each group of automatic positioning mobile workbench control units comprises a group of workbench X-axis feeding servo systems for controlling the automatic positioning mobile workbench to slide back and forth in the X direction, a plurality of groups of sucker Y-axis feeding servo systems, and Y-direction positioning control units which are arranged at the end part of the automatic positioning mobile workbench and used for carrying out Y-direction positioning on the workpiece; a group of sucker Y-axis feeding servo systems control one sucker to slide back and forth in the Y direction; the X-axis feeding servo system of the workbench and the Y-axis feeding servo system of the sucker are connected in parallel with a bus connected with the PLC;
the vacuum control unit comprises a vacuum pump control unit and a workbench vacuum negative pressure detection unit which are connected in parallel with a bus connected with the CNC controller.
9. The control system of claim 8, wherein:
the X-direction positioning control unit comprises an air cylinder, a sensor arranged on the air cylinder, an electromagnetic valve and an I/O module; the I/O module is connected with a bus bidirectional control parallel connection of a CNC controller, the solenoid valve is connected with the I/O module in a unidirectional control series connection mode, the I/O module controls the solenoid valve in a unidirectional mode, the cylinder is connected with the solenoid valve in a unidirectional control series connection mode, the solenoid valve controls the cylinder in a unidirectional mode, the sensor is connected with the I/O module in a unidirectional control series connection mode, and the sensor controls the I/O module in a unidirectional mode;
the Y-direction positioning control unit comprises more than one cylinder, a sensor arranged on each cylinder, an electromagnetic valve and an I/O module; the I/O module is connected with a bus bidirectional control parallel connection of a CNC controller, the solenoid valve is connected with the I/O module in a unidirectional control series connection mode, the I/O module controls the solenoid valve in a unidirectional mode, more than one cylinder is connected with the solenoid valve in a unidirectional control mode, the solenoid valve controls the cylinder in a unidirectional mode, more than one sensor is connected with the I/O module in a unidirectional control mode, and the sensor controls the I/O module in a unidirectional mode;
the vacuum pump control unit comprises a thermal relay, a contactor, a vacuum pump three-phase motor, more than one vacuum electromagnetic valve and a plurality of suckers; the thermal relay is connected with a bus bidirectional control connected with the CNC controller in parallel, the contactor is connected with the thermal relay bidirectional control in series, the vacuum pump three-phase motor is connected with the contactor in series in unidirectional control, one vacuum electromagnetic valve is connected with the vacuum pump three-phase motor in series in unidirectional control or more than two vacuum electromagnetic valves are connected with the vacuum pump three-phase motor in parallel in unidirectional control, and the plurality of suckers are connected with the vacuum electromagnetic valves in parallel in unidirectional control; the contactor unidirectionally controls the three-phase motor, the vacuum pump three-phase motor unidirectionally controls the vacuum electromagnetic valve, and the vacuum electromagnetic valve unidirectionally controls the plurality of suckers;
the workbench vacuum negative pressure detection unit comprises an I/O module and a vacuum detection device; the I/O module is connected with a bus bidirectional control parallel connection connected with the CNC controller, the vacuum detection device is connected with the I/O module in series in a unidirectional control mode, and the vacuum detection device controls the I/O module in a unidirectional control mode.
10. The control system of claim 8, wherein:
the Y-axis feeding left servo system comprises an A/D module, a D/A module, a servo driving device, a servo motor, a position detection device, a speed detection device, a position feedback module and a speed feedback module which are connected in series in sequence in a bidirectional control mode, wherein the A/D module and the D/A module are connected with a data bus, a control bus and an address bus which are connected with a CNC (computerized numerical control) controller in a bidirectional control parallel connection mode, and the position feedback module and the speed feedback module are connected with the data bus, the control bus and the address bus which are connected with the CNC controller in a bidirectional control parallel connection mode;
the structure, control mode and connection mode of the Y-axis feeding right servo system, the X-axis feeding left servo system, the X-axis feeding right servo system, the Z-axis feeding left servo system and the Z-axis feeding right servo system are the same as those of the Y-axis feeding left servo system.
CN201920405723.8U 2019-02-04 2019-03-27 Gantry numerical control machining center and control system thereof Active CN210705191U (en)

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