CN111941552A

CN111941552A - Numerical control woodworking inner arc surface milling machine

Info

Publication number: CN111941552A
Application number: CN202010972721.4A
Authority: CN
Inventors: 陶放; 邹佳欣; 邹光春
Original assignee: Yingkou Xinbaiyun Machinery Co ltd
Current assignee: Yingkou Xinbaiyun Machinery Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2020-11-17

Abstract

The invention provides a numerical control woodworking inner arc surface milling machine which comprises a cutting device, a feeding device, a positioning device, a dust removal device, a rotary workbench, a machine body and an automatic control system, wherein the cutting device is arranged on the machine body; a rotary worktable is horizontally arranged above the lathe bed; the lower part of the cutting device is arranged at the lower side of the lathe bed, and the upper part of the cutting device is arranged in the rotary worktable in a penetrating way; the feeding device is arranged below the bed body and used for driving the cutting device and the rotary worktable; the positioning device is arranged on the rotary worktable, and the dust removal device is arranged above the cutting device and below a workpiece to be cut; the automated control device is electrically connected to the feeder. The invention is suitable for processing the inner arc surfaces of connecting elbows with different radiuses for wood structure buildings in batch production, has simple equipment operation, can realize continuous production, is convenient and quick to clamp and disassemble products, can install and disassemble other products while cutting the equipment, greatly improves the production efficiency, and has low equipment manufacturing cost, small occupied area, reliable operation and high product processing precision.

Description

Numerical control woodworking inner arc surface milling machine

Technical Field

The invention relates to a woodworking inner arc surface technology, in particular to a numerical control woodworking inner arc surface milling machine.

Background

Along with the national emphasis on environment-friendly and energy-saving projects and the rise of domestic and foreign wood structure buildings, the requirements on the structure, the appearance and the like of the wood structure buildings are higher and higher, the traditional installation modes and the traditional processing means are continuously improved, the parts of the wood structure products are also simplified, normalized and standardized step by step, the parts are processed into standard parts in factories and assembled on construction sites, and meanwhile, the high precision, the high efficiency and the specialization of matched processing equipment are also required. FIG. 1 is a conventional lap joint of wooden building walls, which is formed by lap joint of wooden walls 65; fig. 2 shows a standard corner connection method for a current wood structure building, which includes a wood structure wall 65 and a wall connection corner 66.

At present, for the processing of the inner arc surface of a wood structure bent angle, the processing of a vertical numerical control processing center, a woodworking numerical control milling machine, a woodworking profiling milling machine and the like is more advanced:

the inner arc surface of the product processed by the vertical numerical control processing center and the woodworking numerical control milling machine is characterized in that raw materials are fixed on a working table and move along an X-axis and a Y-axis in the horizontal direction of the working table, a milling cutter is vertically installed and rotates, a cutter axially and vertically feeds along a main shaft, the whole action is controlled by a program, and the outer surface of the material is subjected to arc cutting and forming through the rotation of the cutter.

A woodworking profiling milling machine is used for processing a bent angle inner arc surface, a metal backup plate with the same radian is processed according to the radius of the inner arc of a product and is fixed on a lathe bed, the product to be processed is fixed on a workbench capable of moving in two directions, the workbench moves according to the track of the backup plate to process the inner arc surface of the product, and a material is cut and formed through the rotating motion of a cutter.

Above three kinds of processing methods can only process one at a clamping in-process, but the raw and other materials are loaded and unloaded to equipment's condition below stopping completely, and the cutter mostly is vertical installation, because of receiving the influence of equipment intensity, need do a lot of reciprocating motion just can take shape the material processing, and equipment cost is higher, and the product can often produce the knife-connecting phenomenon, and production efficiency is low, and intensity of labour is big, is not fit for the batch production of standardized product.

Disclosure of Invention

The invention aims to provide a numerical control woodworking inner arc surface milling machine aiming at various problems of the processing of the inner arc surface of a wood structure bent angle at present, the numerical control woodworking inner arc surface milling machine is suitable for processing the inner arc surfaces of connecting elbows with different radiuses for wood structure buildings in batch production, the equipment is simple to operate, continuous production can be realized, the clamping and the dismounting of products are convenient and quick, the installation and the dismounting of other products can be carried out while the equipment is used for cutting and processing, the production efficiency of the same product is 5-10 times of that of a processing center, the equipment is low in manufacturing cost, small in occupied area, reliable in operation and high in product processing precision.

In order to achieve the purpose, the invention adopts the technical scheme that: a numerical control woodworking inner arc surface milling machine comprises a cutting device, a feeding device, a positioning device, a dust removal device, a rotary worktable, a machine body and an automatic control system;

a rotary worktable is horizontally arranged above the lathe bed; the lower part of the cutting device is arranged at the lower side of the lathe bed, and the upper part of the cutting device is arranged in the rotary worktable in a penetrating way; the feeding device is arranged below the bed body and used for driving the cutting device and the rotary worktable; the positioning device is arranged on the rotary worktable, and the dust removal device is arranged above the cutting device and below a workpiece to be cut; the automated control arrangement is electrically connected to the feeding device.

Further, a base frame is arranged at the bottom of the lathe bed, a dovetail lower guide rail is fixed on the base frame, a dovetail upper guide rail is matched on the dovetail lower guide rail, and a motor base is fixed above the dovetail upper guide rail; the feeding device is arranged on the motor base through a motor plate; the motor base adjusting block is arranged on the motor base, the adjusting bolt is arranged on the motor base adjusting block, the other end of the adjusting bolt is in threaded connection with the motor plate, the position of the motor plate is adjusted through the adjusting bolt on the motor base adjusting block to drive the cutter shaft motor to move left and right, the cutter shaft motor flat belt wheel is arranged on the cutter shaft motor, and the cutter shaft motor flat belt wheel moves left and right along with the cutter shaft motor, so that a high-speed flat belt is tensioned; the cutting device is installed on the motor base, and the guide rail slides from side to side on the rotary dovetail guide rail adjusting screw dovetail, so that the left and right position adjustment of the fixed shaft sleeve can be realized, and the specific position is adjusted according to the inner arc size of a workpiece. And a tool spindle of the cutting device is vertical to the dovetail upper guide rail and the table surface of the rotary worktable.

Further, feeding device includes cutter shaft motor, cutter shaft motor output is provided with cutter shaft motor flat belt wheel, cutter shaft motor flat belt wheel adopts the arc structure, rises the tight flat belt more easily, drops when preventing the flat belt pine, prevents flat belt axial float simultaneously, has prolonged the life of flat belt. The cutter shaft motor transmits torque to the cutting device through the cutter shaft motor flat belt wheel high-speed flat belt;

the feeding device further comprises a workbench motor, the workbench motor is installed on the motor base plate, the motor base plate is fixed on the base frame through bolts, long holes milled in the motor base plate can be loosened to adjust the position of the motor base plate in the left-right direction, the workbench motor is driven to move left and right, the workbench motor belt pulley is installed on the workbench motor, the workbench motor moves left and right to drive the workbench motor belt pulley to move left and right, and the tension transmission triangular belt is achieved. The workstation motor belt pulley is rotatory after the workstation motor starts, it is rotatory to drive the guide shaft belt pulley through the V belt, the guide shaft belt pulley is installed on the guide shaft, the guide shaft passes through the bearing and fixes on the guide shaft seat, the guide shaft seat is installed on the base frame, the guide shaft pinion is installed to the guide shaft other end, guide shaft pinion and swivel work head internal gear meshing, workstation motor transmission moment of torsion drive swivel work head do low uniform velocity and rotate, but utilize the adjustable workstation rotational speed of converter, thereby guarantee the processingquality and the reasonable process time configuration on surface.

Furthermore, the rotary worktable comprises a worktable inner gear, a rotary table nylon sleeve, an outer ring, a nylon sleeve sliding block and an outer protective sleeve, wherein the worktable inner gear is arranged on the rotary worktable, the outer ring is arranged on an outer ring framework, the outer ring framework is arranged on a base frame, the height can be finely adjusted through adjusting screws, the parallelism of the worktable from the ground plane is adjusted after the assembly is finished, the nylon sleeve sliding block is arranged in the outer ring, and the nylon sleeve sliding block is connected with the outer circular wall of the worktable through screws, so that the worktable is prevented from moving up and down during the operation, and the processing precision is ensured; the outer protective sheath is installed in swivel work head excircle department, prevents that the workstation from rotating to expose the screw and scraping the workman.

Furthermore, the cutting device comprises a tool spindle, a tool, a movable shaft sleeve, a fixed shaft sleeve and a flat belt pulley, wherein one end of the tool spindle is coaxially and rigidly connected with the flat belt pulley, the other end of the tool spindle is sleeved with the tool, the flat belt pulley can drive the tool fixed on the tool spindle to do rotary cutting motion, and the dimension of the cutting edge of the axial section of the tool is the same as the dimension of the section of a workpiece to be machined; the end part of a main shaft of the cutter sleeved with the cutter is in threaded connection with a cutter locking nut, and a cutter gasket is arranged between the cutter locking nut and the cutter.

The cutter main shaft is arranged in the movable shaft sleeve in a matching mode through a bearing, the bearing end cover and the sealing ring are axially sealed in a labyrinth manner and are positioned in the axial labyrinth manner, and sawdust and dust can be prevented from entering the bearing; the outer diameter of the movable shaft sleeve is in clearance fit with the inner diameter of the fixed shaft sleeve, locking bolts are arranged at the upper end and the lower end of the fixed shaft sleeve, and the movable shaft sleeve is fixed on the fixed shaft sleeve after the locking bolts are fastened; a bearing end cover is fixed at one end of the movable shaft sleeve close to the flat belt pulley, and a baffle ring is arranged between the cutting tool shaft bearing and the flat belt pulley and plays roles in positioning the belt pulley and preventing dust; the gasket is arranged at the end head of the cutter main shaft, and the flat belt pulley is fixed through the locking bolt and the flat key; an adjusting nut is fixed on the bearing end cover, an adjusting bracket is fixedly installed on the fixed shaft sleeve, one end of an adjusting screw rod is installed on the bracket through a pressure bearing and a locking nut, the other end of the adjusting screw rod is in threaded fit with the adjusting nut, the locking nut is installed on the adjusting screw rod, and after the adjusting screw rod is locked, the adjusting screw rod is fixed; after loosening, the adjusting screw rod is rotated, the bearing end cover is driven to move left and right through the adjusting nut, so that the positions of the axis directions of the movable shaft sleeve 8 and the fixed shaft sleeve are changed, the first locking bolt is loosened before adjustment, and the first locking bolt is locked after adjustment. The movable shaft sleeve drives the cutter to move along the axis direction, and the size of an inner arc of the workpiece cut by the cutter is adjusted, so that the arc radius of the workpiece to be machined is changed.

Furthermore, the rotating direction of the tool spindle is opposite to that of the rotating worktable, and the tool spindle drives the cutting tool fixed on the tool spindle to do rotary cutting motion.

Furthermore, the positioning device consists of a plurality of positioning blocks and a plurality of workpiece locking devices, the positioning blocks are arranged on the upper plane of the rotary worktable, and the positioning blocks are uniformly distributed according to the size circumference of two side edges of the workpiece; the workpiece locking device comprises a locking hand wheel, a locking screw rod, a locking seat, a locking nut and a locking block, wherein the locking seat is installed on the rotary workbench, the locking nut is fixed on the locking seat, the locking screw rod is in threaded fit with the locking nut, the locking hand wheel is installed at one end of the locking screw rod, the locking block is connected with the other end of the locking screw rod, and the locking block is connected with the locking seat through a spring and can be prevented from loosening after locking. And the locking hand wheel is rotated, the locking screw drives the locking block to compress the workpiece, and the workpiece is loosened in the opposite direction. When the product is clamped, the two side faces of the product are used as the reference, the product is placed between the two positioning blocks on the table top of the workbench and completely attached to the positioning blocks, and the rotary locking device is pressed tightly.

Furthermore, the dust removing device comprises an upper dust removing cover arranged above the cutter and a lower dust removing cover arranged below the workpiece, an upper dust removing frame base plate is arranged on an outer ring framework (the lathe bed), an upper dust removing cylinder is arranged on an upper dust removing frame base plate, and an upper dust removing connecting rod is arranged on the upper dust removing frame base plate and is fixed through an upper dust removing locking bolt; one end of the upper dust removal connecting rod is connected with the air cylinder, the other end of the upper dust removal connecting rod is connected with the upper dust removal connecting plate, the upper dust removal cover is clamped by the upper dust removal connecting plate, and the upper dust removal cover is driven to overturn through the expansion and contraction of the air cylinder; the upper dust hood is controlled by an upper dust removing cylinder, and the upper dust hood can be turned over by pulling the cylinder hand-operated valve, so that the cutter can be conveniently assembled and disassembled, and the cutting condition of a product can be observed at any time; when the tool is disassembled, the upper dust removal locking bolt is opened and adjusted to be locked in the lower limit hole, and the upper dust removal cylinder drives the upper dust removal cover to be lifted up, so that the tool is disassembled; the lower dust hood is arranged on the fixed shaft sleeve, and the dust removal opening on the lower dust hood is arranged in the direction of discharging the sawdust.

Furthermore, the automatic control adopts PLC control, and the rotating speed of the rotary worktable can be controlled by variable frequency speed regulation. The automatic control includes control panel and block terminal, control panel fixes in the lathe bed top through the control panel rotation axis that can carry out a plurality of rotations, and the operator of the different height statures of being convenient for uses, the block terminal is fixed in the lathe bed below, and control panel and block terminal adopt separately to place, make it reach the purpose that does benefit to operation and control.

The process flow of the numerical control woodworking inner arc surface milling machine comprises the following steps:

1. the numerical control woodworking inner arc surface milling machine adopts PLC control, a cutter rotating button on a control panel is started, a cutter shaft motor is started, a cutting cutter arranged on a cutter main shaft is driven to rotate at a high speed through a flat belt, and a cutting device can adjust the processing depth through a dovetail guide rail.

2. After the machining depth is adjusted, the workpiece to be machined is respectively placed between the two positioning blocks on the rotary workbench, and the workpiece locking device is manually adjusted to fix the workpiece on the rotary workbench.

3. And starting a workbench rotating button on the control panel, starting a workbench motor, driving a guide shaft pinion to transmit through the transmission of a V-belt, and meshing the guide shaft pinion with an internal gear of the workbench to ensure that the rotary workbench rotates at a low speed to realize the feeding motion of a product, and cutting the workpiece with the size R1 in the figures 3-4 into the size R in the figures 5-6. The rotating speed of the rotary worktable can be adjusted according to the cutting quality and the requirement of clamping the workpiece, and the rotating speed of the worktable can be controlled by PLC variable frequency speed regulation.

4. The numerical control woodworking inner arc surface milling machine can realize the function of continuously processing products without stopping. Namely, when the workpiece at the first station is processed and the workbench rotates to process the second workpiece, the processed workpiece at the first station is disassembled and a new processed workpiece is installed. And by analogy, when a third station workpiece is processed, the workpiece at the second station is disassembled and installed.

5. The dust removal and chip removal adopt the up-down suction mode, the upper dust removal is controlled by the upper dust removal cylinder, the cylinder is pulled to pull the hand-operated valve, the turnover angle of the upper dust removal cover can be enabled, and the product cutting condition can be observed at any time when the cutter is conveniently disassembled and assembled. The lower dust removal mode is that a lower dust removal cover is arranged below the workpiece, and a dust removal opening is formed in the direction of discharging sawdust, so that dust is removed together from top to bottom, and the dust removal requirement of equipment is met.

6. In order to facilitate operation and improve the processing efficiency, the control panel is designed to rotate at a position of 3 degrees without dead angles.

The numerical control woodworking intrados milling machine mainly adopts a cutter main shaft which is vertically installed and is parallel to a Z axis, a cutting device is installed inside a rotary workbench, the length of the cutter is greater than the height H of a product, the product can be machined by one-time cutting, the product is fixed on a circular rotary workbench in a mechanical clamping mode, the axis of the cutter shaft is parallel to the axis of the rotary workbench main shaft, a plurality of products can be simultaneously placed on the surface of the rotary workbench, the products are uniformly distributed according to the center, the center of the rotary workbench is superposed with the center of the inner and outer cambered surfaces of the product, the material rotates at a constant speed on the workbench to realize the feeding of the material, the cutter is placed inside the material to rotate and cut to realize the machining of the material, a cutting machining area of the equipment is set opposite to an operation area.

In conclusion, the invention is special equipment for processing the inner arc surface of the wood structure product wall body corner product, and the whole equipment system is controlled by adopting a PLC. The method has the advantages of high efficiency of processed products, energy conservation, environmental protection, stable quality, small production operation area and the like, and meanwhile, the equipment has lower cost, convenient operation, stability and reliability, the product processing is uninterruptedly more suitable for the mass and standardized production of products, and the production cost is greatly reduced.

Drawings

FIG. 1 is a conventional lap joint manner of a wood structure building wall;

FIG. 2 is a standard corner connection mode of the existing timber structure building;

FIG. 3 is a top view of a product to be processed;

FIG. 4 is a rear view of the product to be processed;

FIG. 5 is a top view of the finished article of manufacture;

FIG. 6 is a rear view of the finished article of manufacture;

FIG. 7 is a front view of the numerical control woodworking inner arc surface cutting device;

FIG. 8 is a cross-sectional view along AA of FIG. 7;

FIG. 9 is a front view of a numerically controlled woodworking internal arc surface milling machine;

FIG. 10 is a top view of a numerically controlled woodworking intrados milling machine;

FIG. 11 is a perspective view of a numerically controlled woodworking intrados milling machine.

Detailed Description

The invention is further illustrated by the following examples:

example 1

The embodiment discloses a numerical control woodworking inner arc surface milling machine, which comprises a cutting device, a feeding device, a positioning device, a dust removal device, a rotary worktable 32, a machine body and an automatic control system, wherein the cutting device is arranged on the machine body;

a rotary worktable 32 is horizontally arranged above the lathe bed; the lower part of the cutting device is arranged at the lower side of the lathe bed, and the upper part of the cutting device is arranged in the rotary worktable 32 in a penetrating way; the feeding device is arranged below the bed body and is used for driving the cutting device and the rotary working table 32; the positioning device is arranged on the rotary worktable 32, and the dust removing device is arranged above the cutting device (the cutter 4) and below a workpiece to be cut; the automated control arrangement is electrically connected to the feed device (tool shaft motor 49 and table motor 22).

A base frame 51 is arranged at the bottom of the lathe bed, a dovetail lower guide rail 57 is fixed on the base frame 51, a dovetail upper guide rail 56 is matched on the dovetail lower guide rail 57, and a motor base 55 is fixed above the dovetail upper guide rail 56; the feeding device (cutter shaft motor 49) is arranged on a motor base 55 through a motor plate 46; the motor base adjusting block 48 is installed on the motor base 55, the adjusting bolt 47 is installed on the motor base adjusting block 48, the other end of the adjusting bolt is in threaded connection with the motor plate 46, the position of the motor plate 46 is adjusted through the adjusting bolt 47 on the motor base adjusting block 48, the cutter shaft motor 49 is driven to move left and right, the cutter shaft motor flat belt wheel 52 is installed on the cutter shaft motor 49, and the cutter shaft motor flat belt wheel 52 moves left and right along with the cutter shaft motor 49, so that a high-speed flat belt is tensioned; the cutting device (fixed shaft sleeve 9) is installed on the motor base 55, the dovetail guide rail 56 on the rotary dovetail guide rail adjusting screw 58 slides left and right, the left and right position adjustment of the fixed shaft sleeve 9 can be realized, and the specific position is adjusted according to the inner arc size of a workpiece. The tool spindle 1 of the cutting apparatus is perpendicular to the dovetail upper rail 56 and the table of the rotary table 32.

The feeding device comprises a cutter shaft motor 49, a cutter shaft motor flat belt wheel 52 is arranged at the output end of the cutter shaft motor 49, the cutter shaft motor flat belt wheel 52 adopts an arc-shaped structure, a flat belt is tensioned more easily, the flat belt is prevented from falling off when loosened, the flat belt is prevented from axially moving, and the service life of the flat belt is prolonged. The tool shaft motor 49 transmits torque to the cutting device (flat belt pulley 12) through the tool shaft motor flat belt pulley 52 high-speed flat belt;

the feeding device further comprises a workbench motor 22 (a cycloidal pin gear speed reducer), the workbench motor 22 is installed on a motor seat plate 54, the motor seat plate 54 is fixed on the base frame 51 through bolts, long holes milled in the motor seat plate 54 can be loosened to adjust the position of the motor seat plate 54 left and right by loosening the bolts, so that the workbench motor 22 is driven to move left and right, a workbench motor belt pulley 25 is installed on the workbench motor 22, the workbench motor 22 moves left and right to drive the workbench motor belt pulley 25 to move left and right, and a tension transmission triangular belt is achieved. After the workbench motor 22 is started, the workbench motor belt pulley 25 rotates, the guide shaft belt pulley 23 is driven to rotate through a triangular belt, the guide shaft belt pulley 23 is installed on the guide shaft 24, the guide shaft is fixed on the guide shaft seat 27 through the bearing 26, the guide shaft seat 27 is installed on the base frame 51, the guide shaft pinion 28 is installed at the other end of the guide shaft, the guide shaft pinion 28 is meshed with the internal gear 33 of the rotary workbench 32 (the workbench motor 22 transmits torque to drive the rotary workbench 32 to rotate at a low uniform speed, the rotating speed of the workbench can be adjusted by using a frequency converter, and therefore the processing quality of the surface and reasonable process time configuration are guaranteed.

The rotary workbench 32 comprises a workbench inner gear 33, a rotary table nylon sleeve 31, an outer ring 30, a nylon sleeve sliding block 29 and an outer protective sleeve 45, the workbench inner gear 33 is installed on the rotary workbench, the outer ring 30 is installed on an outer ring framework 50, the outer ring framework 50 is installed on a base frame 51, the height can be finely adjusted through an adjusting screw 59, the parallelism of the workbench from the ground plane can be adjusted after the assembly is finished, the nylon sleeve sliding block 29 is installed in the outer ring 30, the nylon sleeve sliding block 29 is connected with the outer circular wall of the workbench through screws, the workbench is prevented from moving up and down during the work, and the machining precision is guaranteed; an outer protective sleeve 45 is mounted on the outer circle of the rotary worktable 32 to prevent the worktable from rotating and exposing the screw to scrape the worker.

The cutting device comprises a cutter main shaft 1, a cutter 4, a movable shaft sleeve 8, a fixed shaft sleeve 9 and a flat belt pulley 12, wherein one end of the cutter main shaft 1 is coaxially and rigidly connected with the flat belt pulley 12, the other end of the cutter main shaft is sleeved with the cutter 4, the flat belt pulley 12 can drive the cutter 4 fixed on the cutter main shaft to do rotary cutting motion, and the size of an axial section cutting edge of the cutter 4 is the same as that of the section of a processed workpiece; the end part of a cutter main shaft 1 sleeved with a cutter 4 is in threaded connection with a cutter locking nut 2, and a cutter gasket 3 is arranged between the cutter locking nut 2 and the cutter 4.

The cutter main shaft 1 is installed in a movable shaft sleeve 8 through a bearing 7 in a matching mode, and the bearing gland 6 and the sealing ring 5 are sealed in an axial labyrinth mode, so that sawdust and dust can be prevented from entering the bearing; the outer diameter of the movable shaft sleeve 8 is in clearance fit with the inner diameter of the fixed shaft sleeve 9, locking bolts 21 are arranged at the upper end and the lower end of the fixed shaft sleeve 9, and the movable shaft sleeve 8 is fixed on the fixed shaft sleeve 9 after the locking bolts are fastened; a bearing end cover 11 is fixed at one end of the movable shaft sleeve 8 close to the flat belt pulley 12, and a baffle ring 10 is arranged between a bearing of the cutting tool shaft 1 and the flat belt pulley 12 and plays roles of positioning the belt pulley and preventing dust; the gasket 13 is arranged at the end head of the tool spindle 1 and fixes the flat belt pulley 12 through a locking bolt 14 and a flat key; an adjusting nut 17 is fixed on the bearing end cover 11, an adjusting bracket 18 is fixedly installed on the fixed shaft sleeve 9, one end of an adjusting screw rod 15 is installed on the bracket 18 through a pressure bearing 19 and a locking nut 20, the other end of the adjusting screw rod is in threaded fit with the adjusting nut 17, a locking nut 16 is installed on the adjusting screw rod 15, and after the adjusting screw rod 15 is locked, the adjusting screw rod 15 is fixed; after loosening, the adjusting screw 15 is rotated, the bearing end cover 11 is driven to move left and right through the adjusting nut 17, so that the positions of the axial directions of the movable shaft sleeve 8 and the fixed shaft sleeve 9 are changed, the first locking bolt 21 is loosened before adjustment, and the first locking bolt 21 is locked after adjustment. The movable shaft sleeve 8 drives the cutter 4 to move along the axis direction, and the size of an inner arc of a workpiece cut by the cutter is adjusted, so that the arc radius of the workpiece to be machined is changed.

The rotation direction of the tool spindle 1 is opposite to the rotation direction of the rotary table 32, and the tool spindle 1 drives the cutting tool 4 fixed thereon to make rotary cutting motion.

The positioning device consists of a plurality of positioning blocks 62 and a plurality of workpiece locking devices, the positioning blocks 62 are arranged on the upper plane of the rotary worktable 32, and the positioning blocks 62 are uniformly distributed according to the size circumference of two side edges of a workpiece; the workpiece locking device comprises a locking hand wheel 44, a locking screw 40, a locking seat 43, a locking nut 42 and a locking block 41, wherein the locking seat 43 is installed on the rotary worktable 32, the locking nut 42 is fixed on the locking seat 43, the locking screw 40 is in threaded fit with the locking nut 42, the locking hand wheel 44 is installed at one end of the locking screw 40, the other end of the locking screw is connected with the locking block 41, and the locking block 41 is connected with the locking seat 43 through a spring, so that looseness after locking can be prevented. And the locking hand wheel 44 is rotated, the locking screw 40 drives the locking block 41 to press the workpiece, and the workpiece is loosened in the opposite direction. When the product is clamped, the two side faces of the product are used as the reference, the product is placed between the two positioning blocks on the table top of the workbench and completely attached to the positioning blocks, and the rotary locking device is pressed tightly.

The dust removing device comprises an upper dust removing cover 39 arranged above the cutter 4 and a lower dust removing cover 63 arranged below a workpiece, an upper dust removing frame base plate 34 is arranged on an outer ring framework 50 (of the lathe bed), an upper dust removing cylinder 35 is arranged on the upper dust removing frame base plate 34, and an upper dust removing connecting rod 37 is arranged on the upper dust removing frame base plate 34 and is fixed through an upper dust removing locking bolt 36; one end of the upper dust removal connecting rod 37 is connected with the air cylinder 35, the other end of the upper dust removal connecting rod is connected with the upper dust removal connecting plate 38, the upper dust removal cover 39 is clamped by the upper dust removal connecting plate 38, and the upper dust removal cover 39 is driven to turn over through the expansion and contraction of the air cylinder 35; the upper dust hood 39 is controlled by the upper dust removing cylinder 35, and the upper dust hood 39 can be turned over by pulling the cylinder hand-operated valve, so that the cutter can be conveniently assembled and disassembled, and the cutting condition of the product can be observed at any time; when the cutter 4 is disassembled, the upper dust removal locking bolt 36 is opened, the lower limit hole is adjusted to be locked, and the upper dust removal cylinder 35 drives the upper dust removal cover 39 to rise to disassemble and assemble the cutter 4; the lower dust hood 63 is arranged on the fixed shaft sleeve 9, and the dust removal opening on the lower dust hood 63 is arranged in the direction of discharging the sawdust.

The automatic control adopts PLC control, and the rotating speed of the rotary worktable 32 can be controlled by variable frequency speed regulation. The automatic control includes control panel 61 and block terminal 53, control panel 61 is fixed in the lathe bed top through the control panel rotation axis 64 that can carry out a plurality of rotations, and the operator of the different height statures of being convenient for uses, block terminal 53 is fixed in the lathe bed below, and control panel 61 and block terminal 53 adopt separately to place, make it reach the mesh that does benefit to operation and control.

1. the numerical control woodworking inner arc surface milling machine adopts PLC control, a cutter rotating button on a control panel 61 is started, a cutter shaft motor 49 is started, a cutting cutter 4 arranged on a cutter main shaft 1 is driven to rotate at high speed through a flat belt, and a cutting device can adjust the processing depth through a dovetail guide rail 56.

2. After the machining depth is adjusted, the workpiece 60 to be machined is respectively placed between the two positioning blocks 62 on the rotary worktable 32, and the workpiece locking device is manually adjusted to fix the workpiece 60 on the rotary worktable 32.

3. A workbench rotating button on a control panel 61 is started, a workbench motor 22 is started, a guide shaft pinion 28 is driven to transmit through the transmission of a V-belt, the guide shaft pinion 28 is meshed with a workbench internal gear 33, the rotating workbench rotates at a low speed to realize product feeding movement, and a workpiece 60 with the size R1 in the figures 3-4 is cut into the size R in the figures 5-6. The rotating speed of the rotary worktable 32 is adjusted according to the cutting quality and the requirement of clamping the workpiece, and the rotating speed of the worktable can be controlled by PLC variable frequency speed regulation.

4. The numerical control woodworking inner arc surface milling machine can realize the function of continuously processing products without stopping. Namely, when the workpiece at the first station is processed and the rotary table 32 is rotated to process the second workpiece, the processed workpiece at the first station is removed and a new workpiece is installed. And by analogy, when a third station workpiece is processed, the workpiece at the second station is disassembled and installed.

5. The dust removal and chip removal are carried out in a vertical suction mode, the upper dust removal is controlled by the upper dust removal cylinder 35, the cylinder is pulled to pull the hand-operated valve, the upper dust removal cover 39 can be turned over, and the product cutting condition can be observed at any time when the cutter is conveniently assembled and disassembled. The lower dust removal mode is that a lower dust removal cover 63 is arranged below the workpiece, and a dust removal opening is formed in the direction of discharging sawdust, so that dust is removed together from top to bottom, and the dust removal requirement of equipment is met.

6. In order to facilitate the operation and improve the processing efficiency, the control panel 61 is designed to rotate in a position of 3 degrees without dead angles.

Example 2

The embodiment discloses

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A numerical control woodworking inner arc surface milling machine is characterized by comprising a cutting device, a feeding device, a positioning device, a dust removal device, a rotary workbench (32), a machine body and an automatic control system;

a rotary worktable (32) is horizontally arranged above the lathe bed; the lower part of the cutting device is arranged at the lower side of the lathe bed, and the upper part of the cutting device is arranged in the rotary workbench (32) in a penetrating way; the feeding device is arranged below the bed body and is used for driving the cutting device and the rotary working table (32); the positioning device is arranged on the rotary worktable (32), and the dust removal device is arranged above the cutting device and below a workpiece to be cut; the automated control arrangement is electrically connected to the feeding device.

2. The numerical control woodworking inner arc surface milling machine according to claim 1, wherein a base frame (51) is arranged at the bottom of the machine body, a dovetail lower guide rail (57) is fixed on the base frame (51), a dovetail upper guide rail (56) is matched on the dovetail lower guide rail (57), and a motor base (55) is fixed above the dovetail upper guide rail (56); the feeding device is arranged on a motor base (55) through a motor plate (46); the cutting device is characterized in that a motor base adjusting block (48) is installed on a motor base (55), an adjusting bolt (47) is installed on the motor base adjusting block (48), the other end of the adjusting bolt is in threaded connection with a motor plate (46), the position of the motor plate (46) is adjusted through the adjusting bolt (47) on the motor base adjusting block (48) to drive a cutter shaft motor (49) to move left and right, a cutter shaft motor flat belt wheel (52) is installed on the cutter shaft motor (49), the cutter shaft motor flat belt wheel (52) moves left and right along with the cutter shaft motor (49), the cutting device is installed on the motor base (55), a guide rail (56) on a dovetail of a rotary dovetail guide rail adjusting screw rod (58) slides left and right, and left and right position adjustment of a fixed shaft sleeve (9) can.

3. The numerical control woodworking intrados milling machine as claimed in claim 1, wherein the feeding device comprises a cutter shaft motor (49), a cutter shaft motor flat belt wheel (52) is arranged at an output end of the cutter shaft motor (49), and the cutter shaft motor flat belt wheel (52) adopts an arc-shaped structure;

the feeding device further comprises a workbench motor (22), the workbench motor (22) is installed on a motor seat plate (54), the motor seat plate (54) is fixed on the base frame (51) through bolts, long holes milled in the motor seat plate (54) can be adjusted left and right by loosening the bolts to drive the workbench motor (22) to move left and right, a workbench motor belt pulley (25) is installed on the workbench motor (22), the workbench motor (22) moves left and right to drive a workbench motor belt pulley (25) to move left and right, the workbench motor belt pulley (25) rotates after the workbench motor (22) is started, a guide shaft belt pulley (23) is driven to rotate through a triangular belt, the guide shaft belt pulley (23) is installed on a guide shaft (24), the guide shaft is fixed on a guide shaft seat (27) through a bearing (26), and the guide shaft seat (27) is installed on the base frame (51), the other end of the guide shaft is provided with a guide shaft pinion (28), and the guide shaft pinion (28) is meshed with a rotary table internal gear (33).

4. The numerical control woodworking intrados milling machine as claimed in claim 1, wherein the rotary workbench (32) comprises a workbench internal gear (33), a turntable nylon sleeve (31), an outer ring (30), a nylon sleeve slider (29) and an outer protective sleeve (45), the workbench internal gear (33) is mounted on the rotary workbench (32), the outer ring (30) is mounted on an outer ring framework (50), the outer ring framework (50) is mounted on a base frame (51), the height can be finely adjusted through an adjusting screw (59), the nylon sleeve slider (29) is mounted in the outer ring (30), the nylon sleeve slider (29) is connected with the outer circular wall of the workbench through a screw, and the outer protective sleeve (45) is mounted at the outer circle of the rotary workbench (32).

5. The numerical control woodworking intrados milling machine according to claim 1, wherein the cutting device comprises a cutter main shaft (1), a cutter (4), a moving shaft sleeve (8), a fixed shaft sleeve (9) and a flat belt pulley (12), one end of the cutter main shaft (1) is coaxially and rigidly connected with the flat belt pulley (12), the other end of the cutter main shaft is sleeved with the cutter (4), the flat belt pulley (12) can drive the cutter (4) fixed on the cutter main shaft to do rotary cutting motion, and the dimension of the cutting edge of the axial section of the cutter (4) is the same as the dimension of the section of a workpiece to be machined; the end part of a cutter main shaft (1) sleeved with a cutter (4) is in threaded connection with a cutter locking nut (2), and a cutter gasket (3) is arranged between the cutter locking nut (2) and the cutter (4);

the cutter main shaft (1) is installed in the movable shaft sleeve (8) in a matched mode through a bearing (7), the bearing gland (6) and the sealing ring (5) are sealed in an axial labyrinth mode, the outer diameter of the movable shaft sleeve (8) is in clearance fit with the inner diameter of the fixed shaft sleeve (9), locking bolts (21) are installed at the upper end and the lower end of the fixed shaft sleeve (9), and the movable shaft sleeve (8) is fixed on the fixed shaft sleeve (9) after the locking bolts are fastened; a bearing end cover (11) is fixed at one end of the movable shaft sleeve (8) close to the flat belt pulley (12), and a baffle ring (10) is arranged between a bearing of the cutting tool shaft (1) and the flat belt pulley (12); the gasket (13) is arranged at the end of the tool spindle (1), and the flat belt pulley (12) is fixed through a locking bolt (14) and a flat key; be fixed with adjusting nut (17) on bearing end cover (11), fixed mounting adjusts support (18) on fixed sleeve (9), and adjusting screw (15) one end is passed through pressure bearing (19) and lock nut (20) and is installed on support (18), other end and adjusting nut (17) screw-thread fit, and lock nut (16) are installed on adjusting screw (15).

6. The numerical control woodworking intrados milling machine according to claim 1, wherein the rotation direction of the tool spindle (1) is opposite to the rotation direction of the rotary table (32), and the tool spindle (1) drives the cutting tool (4) fixed thereon to make a rotary cutting motion.

7. The numerical control woodworking intrados milling machine as claimed in claim 1, wherein the positioning device comprises a plurality of positioning blocks (62) and a plurality of workpiece locking devices, the plurality of positioning blocks (62) are mounted on the upper plane of the rotary worktable (32), and the plurality of positioning blocks (62) are uniformly distributed according to the size of the circumferences of two sides of the workpiece; the workpiece locking device comprises a locking hand wheel (44), a locking lead screw (40), a locking seat (43), a locking nut (42) and a locking block (41), wherein the locking seat (43) is installed on the rotary worktable (32), the locking nut (42) is fixed on the locking seat (43), the locking lead screw (40) is in threaded fit with the locking nut (42), the locking hand wheel (44) is installed at one end of the locking lead screw (40), the other end of the locking lead screw is connected with the locking block (41), and the locking block (41) is connected with the locking seat (43) through a spring.

8. The numerical control woodworking intrados milling machine as claimed in claim 1, wherein the dust removing device comprises an upper dust removing cover (39) arranged above the cutter (4) and a lower dust removing cover (63) arranged below a workpiece, an upper dust removing frame seat plate (34) is mounted on an outer ring framework (50), an upper dust removing cylinder (35) is mounted on the upper dust removing frame seat plate (34), an upper dust removing connecting rod (37) is mounted on the upper dust removing frame seat plate (34) and fixed through an upper dust removing locking bolt (36); one end of the upper dust removal connecting rod (37) is connected with the air cylinder (35), the other end of the upper dust removal connecting rod is connected with the upper dust removal connecting plate (38), the upper dust removal cover (39) is clamped by the upper dust removal connecting plate (38), and the upper dust removal cover (39) is driven to turn over through the expansion and contraction of the air cylinder (35); the upper dust removing cover (39) is controlled by an upper dust removing cylinder (35); the lower dust hood (63) is arranged on the fixed shaft sleeve (9), and a dust removing opening on the lower dust hood (63) is opened in the direction of discharging the wood dust.

9. The numerical control woodworking intrados milling machine as claimed in claim 1, wherein the automatic control comprises a control panel (61) and a distribution box (53), the control panel (61) is fixed above the machine bed through a control panel rotating shaft (64) capable of rotating in multiple directions, the distribution box (53) is fixed below the machine bed, and the control panel (61) and the distribution box (53) are separately arranged.