CN118417897A - Automobile die casting machining center - Google Patents
Automobile die casting machining center Download PDFInfo
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- CN118417897A CN118417897A CN202410457689.4A CN202410457689A CN118417897A CN 118417897 A CN118417897 A CN 118417897A CN 202410457689 A CN202410457689 A CN 202410457689A CN 118417897 A CN118417897 A CN 118417897A
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- 238000004512 die casting Methods 0.000 title claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 238000003754 machining Methods 0.000 claims abstract description 34
- 238000005266 casting Methods 0.000 claims abstract description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 58
- 230000003014 reinforcing effect Effects 0.000 claims description 33
- 229910052757 nitrogen Inorganic materials 0.000 claims description 29
- 238000003825 pressing Methods 0.000 claims description 23
- 238000004146 energy storage Methods 0.000 claims description 18
- 210000000078 claw Anatomy 0.000 claims description 10
- 230000007306 turnover Effects 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 abstract description 16
- 238000013461 design Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/005—Devices for removing chips by blowing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
Abstract
The invention discloses an automobile die casting machining center which comprises a lathe bed, a casting clamp, a frame and two groups of numerical control machining components, wherein the frame is arranged on the lathe bed; the numerical control machining assembly comprises a cross beam, an X-axis linear motor driving mechanism, a Y-axis linear motor driving mechanism, a Z-axis linear counterweight driving mechanism and a main shaft swinging head. The invention has reasonable structural design, and the left part and the right part of the automobile die casting can be synchronously processed through two groups of numerical control processing components, so that the processing efficiency is greatly improved; the X-axis linear motor driving mechanism of the numerical control machining assembly adopts a relative structural design, so that the transverse beam can bear transverse stretching force, further, the deformation of the transverse beam is effectively reduced, and the machining precision is improved; meanwhile, the work load of the Z-axis linear motor module is effectively reduced by utilizing the counterweight function of the Z-axis linear counterweight driving mechanism, so that the spindle box body can move at a high speed, and the work efficiency and the precision are further improved.
Description
Technical Field
The invention relates to the technical field of machining centers, in particular to an automobile die casting machining center.
Background
With the development of new energy automobile industry, the engine and the gearbox of the traditional fuel oil automobile are gradually replaced by the motor and the gearbox of the electric automobile, and meanwhile, the power battery of the energy carrier of the electric automobile is equipped. However, the endurance of the electric automobile is always an index of special attention of users, and in order to improve the endurance mileage, the automobile must be light-weighted, so a great amount of aluminum alloy materials are used in parts of the new energy automobile, such as main chassis parts of a subframe, a front cabin, a battery tray, a motor casing, a reducer casing, a steering knuckle, a longitudinal beam, a shock absorber, a front floor and a rear floor, etc. In particular to an integral die-cast all-aluminum alloy front cabin and rear floor, which replace the original assembly formed by assembling tens of parts into an integral die casting, thoroughly change the production mode of the automobile industry and bring a great deal of new machine tool requirements for processing the parts. The aluminum alloy integrated die casting has the advantages of large volume, thin part wall and easy deformation, and the product needs to be processed into curved surfaces and holes and surfaces with special angles, and the high requirements on the processing efficiency and stability of the machine tool are provided by a mass production mode of the automobile industry.
The utility model discloses a movable column type high-speed six-axis machining center, which is disclosed by the publication number of 'CN 219967100U', and comprises a lathe bed, a stand column, a cross beam, a saddle, a ram and a swinging head, wherein the stand column can be arranged on the lathe bed in a left-right sliding manner, the cross beam is fixed on the stand column, the saddle can be arranged on the cross beam in a front-back sliding manner, the ram can be arranged on the saddle in a vertical sliding manner, and the swinging head is fixed on the ram. The workpiece can be machined by clamping the workpiece once, but only a single spindle is provided, the workpiece is required to be rotated after the left part of the workpiece is machined, then the right part of the workpiece is machined, the machining period is relatively long, and the working efficiency is low.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the automobile die casting machining center which is reasonable in structural design and high in machining efficiency.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
The machining center for the automobile die castings comprises a lathe bed, a casting clamp, a frame and two sets of numerical control machining components, wherein the casting clamp is arranged at the center position of the lathe bed through an A-axis turntable, the frame is arranged on the lathe bed, and the two sets of numerical control machining components are arranged on the frame corresponding to the two side positions of the casting clamp; the numerical control machining assembly comprises a cross beam, an X-axis linear motor driving mechanism, a Y-axis linear motor driving mechanism, a Z-axis linear counterweight driving mechanism and a main shaft swinging head, wherein the stand comprises four upright posts and two bridge frames, the four upright posts are distributed at four corners of the machine body, the two bridge frames are symmetrically arranged on the two upright posts positioned at the left side and the right side, the two X-axis linear motor driving mechanisms are symmetrically arranged on the two bridge frames, two ends of the cross beam are connected with the two X-axis linear motor driving mechanisms, the Y-axis linear motor driving mechanism is arranged on the cross beam, and the main shaft swinging head is arranged on the Y-axis linear motor driving mechanism through the Z-axis linear counterweight driving mechanism.
As a preferable scheme of the invention, the X-axis linear motor driving mechanism comprises an X-axis rail, an X-axis sliding seat, an X-axis linear motor plate and an X-axis linear motor module, wherein a horizontal mounting surface extending along the long side direction of the X-axis linear motor module is arranged on the bridge, a boss seat is arranged on one side of the horizontal mounting surface, a vertical mounting surface is arranged on the side wall of the boss seat, which is close to the horizontal mounting surface, the X-axis rail is arranged on the horizontal mounting surface, the X-axis sliding seat is arranged on the bottom surface of the end part of the cross beam and is matched with the X-axis rail, the X-axis linear motor module is arranged on the vertical mounting surface, the X-axis linear motor plate is arranged on a rotor seat of the X-axis linear motor module, and the end face of the cross beam is arranged with the X-axis linear motor plate. The structural design of the two relative X-axis linear motor driving mechanisms can enable the cross beam to bear transverse stretching force, effectively reduce deformation of the cross beam and improve machining precision.
As a preferable scheme of the invention, the bottom of the vertical installation surface is provided with a limit convex strip; a reinforcing boss is arranged at the joint of the boss and the vertical mounting surface, and a reinforcing convex strip is arranged between the reinforcing boss and the horizontal mounting surface; the beam is provided with a plurality of reinforcing ribs extending along the long side direction of the beam, so that the stability and bearing capacity of the whole structure are effectively enhanced, and the durability and reliability of the machining center are improved.
As a preferable scheme of the invention, two lower traction positions are arranged in the middle of the bottom surface of the cross beam, upper traction positions are symmetrically arranged at the upper corners of two sides of the cross beam, and the upper traction positions are connected with the lower traction positions near one side of the upper traction positions through a pull rod. The middle position of the bottom surface of the cross beam is pulled and stabilized through the pull rod, so that the rigidity and stability of the cross beam are improved, vibration and deformation are reduced, and the machining precision is further improved.
As a preferable scheme of the invention, the cross beam is of a hollow structure; the middle part of the bottom surface of the cross beam is inwards recessed to form the lower traction position; inclined surfaces are arranged at the upper corners of two sides of the cross beam to form the upper traction position; the upper pulling position is parallel to the lower pulling position; the upper traction position and the lower traction position are respectively provided with a through hole for the pull rod to pass through, the end part of the pull rod passes through the through holes and is provided with a threaded part, and nuts which can be pressed on the upper traction position or the lower traction position are screwed on the threaded part; a gasket is arranged between the nut and the upper traction position or the lower traction position; the side edge of the back of the cross beam is provided with a reinforcing side rib, and the center of the back of the cross beam is provided with a reinforcing middle rib.
As a preferable scheme of the invention, the Y-axis linear motor driving mechanism comprises a Y-axis rail, a Y-axis sliding seat, a saddle and a Y-axis linear motor module, wherein the Y-axis linear motor module and the Y-axis rail are arranged on the front surface of the cross beam, the Y-axis sliding seat is arranged on the Y-axis rail in a sliding manner, and the saddle is fixed on the Y-axis sliding seat and is connected with a rotor seat of the Y-axis linear motor module. The Y-axis linear motor module drives the Y-axis sliding seat to move on the Y-axis rail and drives the saddle and the components arranged on the saddle to move along the Y-axis direction.
As a preferable scheme of the invention, the Z-axis linear counterweight driving mechanism comprises a Z-axis bracket, a Z-axis rail, a Z-axis sliding seat, a main shaft box body, a Z-axis linear motor module, an energy storage tank body, a hydraulic station and a nitrogen balance cylinder, wherein the Z-axis bracket is arranged on the saddle; the nitrogen balance cylinder is vertically arranged on the Z-axis support, a piston rod of the nitrogen balance cylinder is connected with the main shaft box body, the energy storage tank body is respectively connected with the hydraulic station and the nitrogen balance cylinder through pipelines, the nitrogen balance cylinder provides balance force, the work load of the Z-axis linear motor module is reduced, the main shaft box body can move at a high speed, and the work efficiency and the precision are improved.
As a preferable scheme of the invention, reinforcing plates are arranged on two sides of the Z-axis bracket, a cylinder body of the nitrogen balance cylinder is arranged on the reinforcing plates through a cylinder seat, a piston rod of the nitrogen balance cylinder penetrates through the cylinder seat and is hinged with a connecting frame, and the connecting frame is fixed on the side wall of the main shaft box body; the energy storage tank body is arranged on the side wall of the reinforcing plate through the mounting seat; the main shaft box body is of a hollow structure, and the outer wall of the main shaft box body is provided with reinforcing ribs; strip-shaped bosses used for installing the Z-axis rail are symmetrically arranged on two sides of the back surface of the main shaft box body; the main shaft swinging head is arranged at the lower end of the main shaft box body. The spindle swinging head has degrees of freedom of a B axis and a C axis, and can be suitable for more complex machining.
As a preferable scheme of the invention, the casting clamp comprises a frame main body, turnover plates, positioning parts, supporting cylinders, supporting columns and pressing positioning devices, wherein the two turnover plates are symmetrically arranged on two sides of the frame main body, the two turnover plates are arranged on the lathe bed through an A-axis turntable, the positioning parts, the supporting columns and the supporting cylinders are arranged on the frame main body, the pressing positioning devices are arranged on the frame main body at the positions corresponding to one side of the supporting columns or the supporting cylinders, and the supporting columns are provided with air blowing holes, so that the die castings can be effectively cooled in time, chips generated by processing on the die castings can be removed, and the cleanliness and the cooling effect of the processing process can be improved.
As a preferable scheme of the invention, a center boss is arranged at the center of the upper end surface of the support column, and a plurality of air blowing holes are distributed at the periphery of the center boss; the supporting cylinder is a spring supporting cylinder, an oil pressure supporting cylinder or a pneumatic supporting cylinder; the outline of the frame main body is octagonal; the frame main body is provided with a mounting plate; the pressing positioning device comprises a linear driving device, a pressing claw and a support arm, wherein the lower end of the support arm is hinged to a fixed part of the linear driving device, the upper end of the support arm is hinged to the pressing claw, and the tail end of the pressing claw is hinged to a driving part of the linear driving device; the positioning component is a positioning column or a positioning block, so that the positioning effect is good, and stable positioning of the casting in the machining process is ensured.
The beneficial effects of the invention are as follows: the invention has reasonable structural design, two groups of numerical control machining components are arranged, the casting clamp is positioned between the two groups of numerical control machining components, and the left part and the right part of the automobile die casting can be synchronously machined through the two groups of numerical control machining components, so that the machining efficiency is greatly improved; the X-axis linear motor driving mechanism of the numerical control machining assembly adopts a relative structural design, so that the transverse beam can bear transverse stretching force, further, the deformation of the transverse beam is effectively reduced, and the machining precision is improved; meanwhile, the work load of the Z-axis linear motor module is effectively reduced by utilizing the counterweight function of the Z-axis linear counterweight driving mechanism, so that the spindle box body can move at a high speed, and the work efficiency and the precision are further improved.
The invention will be further described with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is a schematic top view of the present invention.
FIG. 4 is a schematic view of the structure of the casting holder of the present invention.
Fig. 5 is a schematic view of the structure of the pressing and positioning device in the present invention.
Fig. 6 is a schematic structural diagram of an X-axis linear motor module according to the present invention.
Fig. 7 is a schematic perspective view of the cross member of the present invention.
Fig. 8 is a schematic cross-sectional view of the cross-beam of the present invention.
Fig. 9 is a schematic structural view 1 of a Z-axis linear counterweight driving mechanism in the invention.
Fig. 10 is a schematic structural view 2 of the Z-axis linear weight driving mechanism of the present invention.
Detailed Description
Referring to fig. 1 to 10, the present embodiment provides an automotive die casting machining center, which includes a lathe bed 1, a casting clamp 2, a frame 3, a PLC controller, an a-axis turntable and two sets of numerical control machining components, wherein the a-axis turntable is connected with and controlled by the PLC controller, respectively.
The casting clamp 2 is arranged at the center of the lathe bed 1 through an A-axis turntable 4, and specifically, the casting clamp 2 comprises a frame main body 21, turnover plates 22, a positioning component 23, a supporting cylinder 24, a supporting column 25 and a pressing positioning device 26, wherein the two turnover plates 22 are symmetrically arranged at two sides of the frame main body 21, and the two turnover plates 22 are arranged on the lathe bed 1 through the A-axis turntable 4 and driven by the A-axis turntable 4 to rotate around the A-axis.
The positioning component 23, the support column 25 and the support cylinder 24 are correspondingly distributed on the frame main body 21 corresponding to the shape of the die casting of the automobile to be processed, and the pressing and positioning device 26 is arranged on the frame main body 21 corresponding to one side position of the support column 25 or the support cylinder 24.
The support column 25 is provided with the air blowing hole 251, so that the die casting can be effectively cooled in time, chips and chips generated by machining on the die casting of an automobile can be removed, and the cleanliness and the cooling effect in the machining process can be improved. In order to avoid the shielding of the air blowing holes 251, a center boss 252 is disposed at the center of the upper end surface of the supporting column 25, and a plurality of air blowing holes 251 are distributed around the center boss 252, so as to further improve the cooling effect and the cleaning effect.
In this embodiment, the supporting cylinder 24 may be a spring supporting cylinder, which has a simple supporting manner and low cost, and does not need additional energy supply, so as to be used for supporting the die casting of the automobile, and prevent deformation or vibration caused by cutting force in the processing process, thereby affecting the processing precision of the workpiece. In other embodiments, the support cylinder 24 may be an oil pressure support cylinder or a pneumatic support cylinder.
The frame body 21 is preferably octagonal in shape and has good structural stability. The frame main body 21 is provided with a mounting plate, so that the mounting area is increased, and the positioning component 23, the support column 25, the support cylinder 24 and other components can be conveniently mounted.
The pressing and positioning device 26 comprises a linear driving device 261, a pressing claw 262 and a support arm 263, wherein the linear driving device 261 is preferably an air cylinder, the lower end of the support arm 263 is hinged to a cylinder body of the linear driving device 261, the upper end of the support arm 263 is hinged to the pressing claw 262, and the tail end of the pressing claw 262 is hinged to a piston rod of the linear driving device 261; when the linear driving device 261 extends out, the front end of the pressing claw 262 can be pushed to press down and clamp the automobile die casting; otherwise, the automobile die casting is loosened.
The positioning part 23 can be in the shape of a positioning column or a positioning block and the like so as to adapt to the positioning requirements of various parts of different shapes of the automobile die casting, and has high flexibility and good positioning effect, and the stable positioning of the automobile die casting in the processing process is ensured.
The frame 3 is arranged on the lathe bed 1, and two groups of numerical control machining components are arranged on the frame 3 corresponding to the two sides of the casting clamp 2; specifically, the numerical control machining assembly comprises a cross beam 5, an X-axis linear motor driving mechanism 6, a Y-axis linear motor driving mechanism 7, a Z-axis linear counterweight driving mechanism 8 and a spindle swinging head 9, the frame 3 comprises four upright posts and two bridge frames, the four upright posts are distributed at four corners of the lathe bed 1, the two bridge frames are symmetrically arranged on the two upright posts positioned at the left side and the right side, the two X-axis linear motor driving mechanisms 6 are symmetrically arranged on the two bridge frames, and two ends of the cross beam 5 are connected with the two X-axis linear motor driving mechanisms 6.
The X-axis linear motor driving mechanism 6 comprises an X-axis rail 61, an X-axis sliding seat 62, an X-axis linear motor plate 63 and an X-axis linear motor module 64, wherein a horizontal mounting surface 31 extending along the long side direction of the X-axis linear motor module is arranged on the bridge, a boss 32 is arranged on one side of the horizontal mounting surface 31, a vertical mounting surface 33 is arranged on the side wall of the boss 32 close to the horizontal mounting surface 31, the X-axis rail 61 is arranged on the horizontal mounting surface 31, the X-axis sliding seat 62 is arranged on the bottom surface of the end part of the cross beam 5 and is matched with the X-axis rail 61, the X-axis linear motor module 64 is arranged on the vertical mounting surface 33, the X-axis linear motor plate 63 is arranged on a rotor seat of the X-axis linear motor module 64, and the end surface of the cross beam 5 is arranged with the X-axis linear motor plate 63. The X-axis linear motor module 64 includes a stator component and a mover component with respect to the structural design of the two X-axis linear motor drive mechanisms 6. The stator component includes a core and a coil that generates a magnetic field when a power supply provides current. And the rotor part includes rotor seat and the fixed magnet that sets up mutually with this rotor seat, and when the magnetic field that the stator part produced acted on the moving part, magnet can receive the effect of magnetic attraction and drive rotor seat along X axis direction motion, simultaneously, the magnetic attraction still has the effort of certain Y axis direction to let crossbeam 5 bear horizontal tensile force, and then reduce the deformation of crossbeam 5, promote machining precision.
Preferably, a limit protruding strip is arranged at the bottom of the vertical mounting surface 33; a reinforcing boss is arranged at the joint of the boss 32 and the vertical mounting surface, and a reinforcing raised line is arranged between the reinforcing boss and the horizontal mounting surface 31; through spacing sand grip, reinforcing boss and reinforcement sand grip, can effectively increase the structural strength and the bearing capacity of crane span structure, improve machining center's durability and reliability.
The cross beam 5 is provided with a plurality of reinforcing ribs extending along the long side direction of the cross beam, so that the structural stability and bearing capacity of the cross beam 5 can be improved. Preferably, two lower pulling positions 51 are provided at the middle position of the bottom surface of the cross beam 5, upper pulling positions 52 are symmetrically provided at the upper corners of both sides of the cross beam 5, and the upper pulling positions 52 are connected with the lower pulling positions 51 near one side thereof through a pull rod 53. The middle position of the bottom surface of the cross beam 5 is pulled and stabilized through the pull rod 53, so that the rigidity and stability of the cross beam 5 are improved, vibration and deformation are reduced, and the machining precision is further improved.
Preferably, the cross beam 5 is preferably a hollow structure, and the hollow structure can remarkably reduce the overall weight of the cross beam 5, thereby reducing the motion inertia and improving the response speed and the processing efficiency. The middle part of the bottom surface of the cross beam 5 is recessed inwards to form the lower pulling position 51, and inclined surfaces are arranged at the upper corners of the two sides of the cross beam 5 to form the upper pulling position 52, so that the installation and adjustment of the pull rod 53 are facilitated. The upper pulling position 52 and the lower pulling position 51 are parallel, so that the uniform distribution of the pulling force is ensured, and the stability of the middle position of the cross beam 5 in the vertical direction is effectively enhanced. The upper pulling position 52 and the lower pulling position 51 are respectively provided with a through hole for the pull rod 53 to pass through, the end part of the pull rod 53 passes through the through holes and is provided with a threaded part, and the threaded part is screwed with a nut 54 which can be pressed against the upper pulling position 52 or the lower pulling position 51, so that the installation is simple and convenient; when the middle part of the cross beam 5 possibly generates deformation to influence the machining precision due to gravity, the nut 54 can be screwed to enable the middle part of the beam body to bear upward tension through the pull rod 53 during assembly, so that the deformation caused by gravity is counteracted, the beam body is corrected, and the machining precision is guaranteed.
A gasket is arranged between the nut 54 and the upper pulling position 52 or the lower pulling position 51; the gasket can prevent that the nut from directly pressing on the surface of the cross beam 5, avoids the damage on the surface of the cross beam 5 caused by overlarge pressure, simultaneously increases the contact area, disperses the pressure of the nut to the cross beam 5, and improves the stability and durability of connection.
The side edge of the back of the cross beam 5 is provided with a reinforcing side rib 55, and the center of the back of the cross beam 5 is provided with a reinforcing middle rib 56. The rigidity and stability of the cross member 5 can be improved by reinforcing the side ribs 55 and the reinforcing center rib 56, and vibration and deformation during processing can be reduced.
The Y-axis linear motor driving mechanism 7 is arranged on the cross beam 5. Specifically, the Y-axis linear motor driving mechanism 7 includes a Y-axis rail 71, a Y-axis slide 72, a saddle 73, and a Y-axis linear motor module 74, where the Y-axis linear motor module 74 and the Y-axis rail 71 are disposed on the front surface of the cross beam 5, the Y-axis slide 72 is slidably disposed on the Y-axis rail 71, and the saddle 73 is fixed on the Y-axis slide 72 and connected with a mover seat of the Y-axis linear motor module 74. The Y-axis linear motor module 74 drives the Y-axis slider 72 to move on the Y-axis rail 71, driving the saddle 73 and components mounted on the saddle 73 to move in the Y-axis direction.
The spindle swinging head 9 is arranged on the Y-axis linear motor driving mechanism 7 through the Z-axis linear counterweight driving mechanism 8. Specifically, the Z-axis linear counterweight driving mechanism 8 includes a Z-axis bracket 81, a Z-axis rail 82, a Z-axis slide, a spindle box 83, a Z-axis linear motor module 84, an energy storage tank 85, a hydraulic station 86 and a nitrogen balance cylinder 87, wherein the Z-axis bracket 81 is mounted on the saddle 73, preferably, reinforcing plates 88 are disposed on two sides of the Z-axis bracket 81, so that the overall strength and rigidity of the Z-axis bracket 81 can be remarkably improved, and the stable performance can be maintained when the Z-axis bracket faces high load and high-speed movement. The Z-axis rail 82 and the Z-axis linear motor module 84 are arranged on the back surface of the spindle box 83, the Z-axis sliding seat is slidably arranged on the Z-axis rail 82 and is fixed with the Z-axis bracket 81, and a rotor seat of the Z-axis linear motor module 84 is connected with the Z-axis bracket 81 or the saddle 73.
The nitrogen balance cylinder 87 is vertically arranged on the Z-axis support 81, a piston rod of the nitrogen balance cylinder 87 is connected with the main shaft box 83, and the energy storage tank 85 is respectively connected with the hydraulic station 86 and the nitrogen balance cylinder 87 through pipelines. The energy storage tank body 85 is filled with a certain amount of nitrogen, the hydraulic station 86 pumps hydraulic oil into the energy storage tank body 85 through a pipeline, so that the energy storage tank body 85 keeps a certain range of pressure, when the pressure in the energy storage tank body 85 is lower than a set value, the hydraulic station 86 pumps the hydraulic oil in time, and the pressure in the energy storage tank body 85 is always kept within the set range; the energy storage tank 85 is connected with the nitrogen balance cylinder 87 through a pipeline, so that the pressure intensity of the energy storage tank and the nitrogen balance cylinder is kept consistent, and a telescopic rod of the nitrogen balance cylinder 87 is connected with the main shaft box 83. The gravity of the headstock 83 and its components is offset by the pressure in the nitrogen balance cylinder 87. During the telescopic movement of the nitrogen balance cylinder 87, hydraulic oil flows back and forth between the energy storage tank 85 and the nitrogen balance cylinder 87. The Z-axis linear motor module 84 drives the spindle box 83 to move, and because the pressure in the nitrogen balance cylinder 87 counteracts the weight of the spindle box 83, the inertia load during Z-axis movement is effectively reduced, so that the spindle box 83 can move at an ultra-high speed.
The cylinder body of the nitrogen balance cylinder 87 is mounted on the reinforcing plate 88 through a cylinder block, and the cylinder block provides a stable mounting platform for the nitrogen balance cylinder 87. The piston rod of the nitrogen balance cylinder 87 passes through the cylinder block and is hinged with a connecting frame, and the connecting frame is fixed on the side wall of the main shaft box 83. The energy storage tank body 85 is arranged on the side wall of the reinforcing plate 88 through a mounting seat, so that the energy storage tank is stable and convenient to mount and maintain; the main shaft box 83 is of a hollow structure, and the outer wall of the main shaft box 83 is provided with reinforcing ribs, so that the weight of the main shaft box 83 is reduced on the basis of ensuring the structural strength. Strip-shaped bosses for mounting the Z-axis rail 82 are symmetrically arranged on two sides of the back surface of the main shaft box 83, so that the Z-axis rail 82 is easy to mount, and meanwhile, the structural strength of the main shaft box 83 is further enhanced; the spindle head 9 is disposed at the lower end of the spindle box 83, and the spindle head 9 has degrees of freedom of B axis and C axis, and can be used for more complicated processing.
In operation, the automobile die casting 10 to be processed is placed on the casting clamp 2, the casting clamp 2 is supported by the positioning component 23, the support column 25 and the support cylinder 24, and the pressing and clamping are performed by the pressing and positioning device 26 for positioning. Because the casting clamp 2 is positioned between the two groups of numerical control machining components, the left part and the right part of the automobile die casting 10 can be synchronously machined through the two groups of numerical control machining components, and the machining efficiency is greatly improved. During processing, as the X-axis linear motor driving mechanism 6 of the numerical control processing assembly adopts a relative structural design, when the X-axis linear motor modules 64 at two sides can drive the cross beam 5 to move in the X-axis direction, the cross beam 5 is transversely stretched, the middle deformation of the cross beam 5 is reduced through transverse stretching force, and the processing precision is improved. While the Z-axis linear motor module 84 is driven, the nitrogen balance cylinder 87 provides balance force to offset the gravity of the main shaft box 83 and the components on the main shaft box, so that the work load of the Z-axis linear motor module 84 is reduced, the main shaft box 83 can move at a high speed, and the working efficiency and the precision are effective.
Variations and modifications to the above would be obvious to persons skilled in the art to which the invention pertains from the foregoing description and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way. As described in the above embodiments of the present invention, other processing centers obtained by adopting the same or similar structures are all within the scope of the present invention.
Claims (10)
1. The utility model provides an automobile die casting machining center, its includes lathe bed and foundry goods anchor clamps, its characterized in that: the casting fixture is arranged at the center of the lathe bed, the frame is arranged on the lathe bed, and the two sets of numerical control machining components are arranged on the frame corresponding to the two sides of the casting fixture; the numerical control machining assembly comprises a cross beam, an X-axis linear motor driving mechanism, a Y-axis linear motor driving mechanism, a Z-axis linear counterweight driving mechanism and a main shaft swinging head, wherein the stand comprises four upright posts and two bridge frames, the four upright posts are distributed at four corners of the machine body, the two bridge frames are symmetrically arranged on the two upright posts positioned at the left side and the right side, the two X-axis linear motor driving mechanisms are symmetrically arranged on the two bridge frames, two ends of the cross beam are connected with the two X-axis linear motor driving mechanisms, the Y-axis linear motor driving mechanism is arranged on the cross beam, and the main shaft swinging head is arranged on the Y-axis linear motor driving mechanism through the Z-axis linear counterweight driving mechanism.
2. The automobile die casting machining center according to claim 1, wherein the X-axis linear motor driving mechanism comprises an X-axis rail, an X-axis sliding seat, an X-axis linear motor plate and an X-axis linear motor module, a horizontal mounting surface extending along the long side direction of the bridge is arranged on the bridge, a boss is arranged on one side of the horizontal mounting surface, a vertical mounting surface is arranged on the side wall, close to the horizontal mounting surface, of the boss, the X-axis rail is arranged on the horizontal mounting surface, the X-axis sliding seat is arranged on the bottom surface of the end part of the cross beam and is matched with the X-axis rail, the X-axis linear motor module is arranged on the vertical mounting surface, the X-axis linear motor plate is arranged on a rotor seat of the X-axis linear motor module, and the end face of the cross beam is arranged with the X-axis linear motor plate.
3. The automobile die casting machining center according to claim 2, wherein a limiting raised strip is arranged at the bottom of the vertical mounting surface; a reinforcing boss is arranged at the joint of the boss and the vertical mounting surface, and a reinforcing convex strip is arranged between the reinforcing boss and the horizontal mounting surface; the beam is provided with a plurality of reinforcing ribs extending along the long side direction.
4. The automobile die casting machining center according to claim 1, wherein two lower pulling positions are arranged in the middle of the bottom surface of the cross beam, upper pulling positions are symmetrically arranged at upper corners of two sides of the cross beam, and the upper pulling positions are connected with the lower pulling positions near one side of the upper pulling positions through pull rods.
5. The automotive die casting machining center according to claim 4, wherein the cross member is a hollow structure; the middle part of the bottom surface of the cross beam is inwards recessed to form the lower traction position; inclined surfaces are arranged at the upper corners of two sides of the cross beam to form the upper traction position; the upper pulling position is parallel to the lower pulling position; the upper traction position and the lower traction position are respectively provided with a through hole for the pull rod to pass through, the end part of the pull rod passes through the through holes and is provided with a threaded part, and nuts which can be pressed on the upper traction position or the lower traction position are screwed on the threaded part; a gasket is arranged between the nut and the upper traction position or the lower traction position; the side edge of the back of the cross beam is provided with a reinforcing side rib, and the center of the back of the cross beam is provided with a reinforcing middle rib.
6. The automobile die casting machining center according to claim 1, wherein the Y-axis linear motor driving mechanism comprises a Y-axis rail, a Y-axis slide, a saddle and a Y-axis linear motor module, the Y-axis linear motor module and the Y-axis rail are arranged on the front face of the cross beam, the Y-axis slide is slidably arranged on the Y-axis rail, and the saddle is fixed on the Y-axis slide and connected with a mover seat of the Y-axis linear motor module.
7. The automobile die casting machining center according to claim 6, wherein the Z-axis linear counterweight driving mechanism comprises a Z-axis bracket, a Z-axis rail, a Z-axis sliding seat, a spindle box, a Z-axis linear motor module, an energy storage tank, a hydraulic station and a nitrogen balance cylinder, the Z-axis bracket is mounted on the saddle, the Z-axis rail and the Z-axis linear motor module are arranged on the back of the spindle box, the Z-axis sliding seat is slidably arranged on the Z-axis rail and is fixed with the Z-axis bracket, and a rotor seat of the Z-axis linear motor module is connected with the Z-axis bracket or the saddle; the nitrogen balance cylinder is vertically arranged on the Z-axis support, a piston rod of the nitrogen balance cylinder is connected with the main shaft box body, and the energy storage tank body is respectively connected with the hydraulic station and the nitrogen balance cylinder through pipelines.
8. The automobile die casting machining center according to claim 7, wherein reinforcing plates are arranged on two sides of the Z-axis support, a cylinder body of the nitrogen balancing cylinder is arranged on the reinforcing plates through a cylinder seat, a piston rod of the nitrogen balancing cylinder penetrates through the cylinder seat and is hinged with a connecting frame, and the connecting frame is fixed on the side wall of the spindle box body; the energy storage tank body is arranged on the side wall of the reinforcing plate through the mounting seat; the main shaft box body is of a hollow structure, and the outer wall of the main shaft box body is provided with reinforcing ribs; strip-shaped bosses used for installing the Z-axis rail are symmetrically arranged on two sides of the back surface of the main shaft box body; the main shaft swinging head is arranged at the lower end of the main shaft box body.
9. The automobile die casting machining center according to claim 1, wherein the casting clamp comprises a frame body, turnover plates, positioning components, supporting cylinders, supporting columns and pressing positioning devices, the two turnover plates are symmetrically arranged on two sides of the frame body, the two turnover plates are installed on the lathe bed through an A-axis turntable, the positioning components, the supporting columns and the supporting cylinders are arranged on the frame body, the pressing positioning devices are arranged on the frame body corresponding to one side of the supporting columns or the supporting cylinders, and the supporting columns are provided with air blowing holes.
10. The automobile die casting machining center according to claim 9, wherein a center boss is arranged at the center of the upper end face of the support column, and a plurality of the air blowing holes are distributed on the periphery of the center boss; the supporting cylinder is a spring supporting cylinder, an oil pressure supporting cylinder or a pneumatic supporting cylinder; the outline of the frame main body is octagonal; the frame main body is provided with a mounting plate; the pressing positioning device comprises a linear driving device, a pressing claw and a support arm, wherein the lower end of the support arm is hinged to a fixed part of the linear driving device, the upper end of the support arm is hinged to the pressing claw, and the tail end of the pressing claw is hinged to a driving part of the linear driving device; the positioning component is a positioning column or a positioning block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410457689.4A CN118417897A (en) | 2024-04-16 | 2024-04-16 | Automobile die casting machining center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410457689.4A CN118417897A (en) | 2024-04-16 | 2024-04-16 | Automobile die casting machining center |
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| Publication Number | Publication Date |
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| CN118417897A true CN118417897A (en) | 2024-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410457689.4A Pending CN118417897A (en) | 2024-04-16 | 2024-04-16 | Automobile die casting machining center |
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| CN (1) | CN118417897A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119457993A (en) * | 2024-12-17 | 2025-02-18 | 珠海格力智能装备技术研究院有限公司 | Processing equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH407661A (en) * | 1962-04-06 | 1966-02-15 | Oerlikon Buehrle Holding Ag | Double supported beam with tendon |
| CN202114525U (en) * | 2011-05-16 | 2012-01-18 | 常州创胜特尔数控机床设备有限公司 | Counterweight balancing device of processing center |
| CN105945616A (en) * | 2016-06-28 | 2016-09-21 | 宁波汇众汽车车桥制造有限公司 | Machining tool and machining method of steering knuckle bearing hole |
| CN212858737U (en) * | 2020-03-02 | 2021-04-02 | 南通国盛智能科技集团股份有限公司 | Large-span gantry machining center crossbeam straightness adjusting device |
| CN117817410A (en) * | 2024-02-26 | 2024-04-05 | 宁波海天精工股份有限公司 | Linear motor driven high-speed double-spindle machine tool |
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2024
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH407661A (en) * | 1962-04-06 | 1966-02-15 | Oerlikon Buehrle Holding Ag | Double supported beam with tendon |
| CN202114525U (en) * | 2011-05-16 | 2012-01-18 | 常州创胜特尔数控机床设备有限公司 | Counterweight balancing device of processing center |
| CN105945616A (en) * | 2016-06-28 | 2016-09-21 | 宁波汇众汽车车桥制造有限公司 | Machining tool and machining method of steering knuckle bearing hole |
| CN212858737U (en) * | 2020-03-02 | 2021-04-02 | 南通国盛智能科技集团股份有限公司 | Large-span gantry machining center crossbeam straightness adjusting device |
| CN117817410A (en) * | 2024-02-26 | 2024-04-05 | 宁波海天精工股份有限公司 | Linear motor driven high-speed double-spindle machine tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119457993A (en) * | 2024-12-17 | 2025-02-18 | 珠海格力智能装备技术研究院有限公司 | Processing equipment |
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