Multi-spindle numerical control vertical special lathe

Abstract

The present application relates to the technical field of numerical control lathe production, in particular to a multi-spindle numerical control vertical special lathe, which comprises a numerical control system, a lathe shell, a protective door, a main shaft, the numerical control system controls the machine tool to process workpieces, the protective door is slidingly installed at the opening of the lathe shell, and further comprises a supporting assembly and a chuck device, the supporting assembly rotates under the control of the numerical control system, rotates the processed parts to the outside of the machine tool shell, and moves the unprocessed parts to the inside of the machine tool to start processing; the chuck device is installed above the supporting assembly, clamps the workpieces to be processed by pushing force during the feeding process, and releases the processed workpieces by spring elastic force, so that the machine tool can disassemble and clamp the workpieces without stopping running, reduces the time required for installing multiple workpieces on the multi-spindle numerical control machine tool, and improves the production efficiency of the numerical control machine tool.

Description

TECHNICAL FIELD

[0001] The present application relates to the production technology field of numerical control lathe, in particular to a multi-spindle numerical control vertical special lathe. BACKGROUND

[0002] The numerical control lathe is a kind of high-precision and high-efficiency automatic machine tool, which can be used for machining straight cylinder, inclined cylinder, arc and various threads, grooves, worm and other complex workpieces; The multi-spindle vertical numerical control lathe is designed to meet the needs of synchronous machining of multiple workpieces, which can simultaneously process multiple workpieces in the same lathe, and the multi-spindle vertical numerical control special lathe is usually used for machining special-shaped parts, and the workpiece generally does not rotate during machining, but the relative movement of the tool and the workpiece is realized to realize the machining of the workpiece; With the rapid development and industrial upgrading of China's manufacturing industry, the market demand and industry prospects of numerical control machining technology are expanding; With the development of manufacturing industry towards high-end, intelligentization and automation, more and more enterprises begin to introduce multi-spindle numerical control machining equipment to improve production efficiency, reduce cost and improve product quality.

[0003] The numerical control vertical lathe adopts computer control technology, which can ensure the precision and quality of machining, and can meet the requirements of high-precision machining; Compared with the traditional mechanical machining method, the machining speed of the multi-spindle numerical control vertical lathe is faster, which can greatly shorten the machining cycle, improve the production efficiency and capacity, and ensure the precision consistency of multiple workpiece machining.

[0004] However, the existing multi-spindle vertical numerical control lathe simultaneously processes multiple workpieces in the same lathe during machining, and needs to stop the machine tool for a long time during feeding and discharging, which reduces the production efficiency, and manual adjustment of the chuck to clamp the workpiece increases the workload of the feeding and discharging personnel, and cannot guarantee that the interference between the main shafts does not occur when multiple workpieces are machined.

[0005] In view of the above situation, in order to overcome the above technical problems, the present application designs a multi-spindle numerical control vertical special lathe, which solves the above technical problems. SUMMARY

[0006] The technical problem to be solved by the present application is that the existing multi-spindle vertical numerical control lathe simultaneously processes multiple parts in one lathe during machining, and must stop the machine tool for a period of time during feeding and discharging, which affects the production efficiency of the numerical control machine tool; The existing machine tool also needs to manually adjust the chuck to clamp and release the workpiece during feeding and discharging, which increases the workload of the feeding and discharging personnel, and causes the main shafts to interfere with each other when multiple workpieces are machined by multiple main shafts.

[0007] In order to solve the above problems, the present application provides the following technical scheme:

[0008] The application provides a multi-spindle numerical control vertical special lathe, which comprises a numerical control system, a lathe shell, a protective door and a spindle, wherein the numerical control system is installed on the outside of the lathe shell, the protective door is slidingly installed at the opening of the lathe shell, and the spindle is installed inside the lathe shell; the cutter below the spindle processes the workpiece under the program control of the numerical control system; characterized in that the support assembly and the chuck device are further included; the support assembly is controlled to rotate by the numerical control system, so as to rotate the processed parts to the outside of the lathe shell and move the unprocessed parts to the inside of the lathe shell to start processing; the number of the chuck devices is twice the number of the spindles; the chuck devices are installed above the support assembly, and the workpieces to be processed are clamped by the pushing force during the feeding process, and the processed workpieces are loosened by the elastic force of the compression spring.

[0009] The bottom of the protective door is provided with a rectangular hole, and the protective door is slidingly opened and closed up and down at the lathe shell; when the numerical control machine tool processes the workpiece, the protective door passes through the support assembly to isolate the working area of the machine tool from the outside world, so as to prevent the flying chips generated during the processing of the workpiece from causing harm to the workers; when the workpiece is processed, the protective door is slid upward to open, thereby providing a rotating space for the support assembly; the processed workpiece is rotated to the outside of the lathe, and the unprocessed workpiece installed in advance is rotated to the inside of the lathe for processing, without stopping the operation of the lathe, thereby improving the production efficiency of the numerical control machine tool.

[0010] The support assembly comprises a support, a rotating shaft, a driving gear, a connecting rod, a workbench, a driven gear and an extension device; the support is U-shaped, one end of the support is fixedly installed on the inside of the lathe shell, and the other end of the support is rotatably installed with the rotating shaft; the rotating shaft is driven to rotate together with the driving gears fixedly connected at both ends of the rotating shaft through the rotation of the driving structure inside the lathe; the two ends of the connecting rod are rotatably connected with two workbenches, respectively, and the center of the connecting rod is provided with an annular protrusion; the inside of the annular protrusion is rotatably connected with the support, and the support fixing the position of the center of the connecting rod and the rotating shaft; the driven gear is fixedly installed on the outside of the annular protrusion; the driven gear is driven to rotate together with the two workbenches with the center of the annular protrusion as the center through the meshing action with the driving gear; the diameter value of the driven gear is greater than half of the length value of the connecting rod; and the extension device is fixedly installed on the inside of the lathe shell.

[0011] The U-shaped support sets the support ring to fix the connecting rod in the lathe, and does not affect the rotation of the connecting rod and the workbench when the support assembly rotates; the other end of the U-shaped support is rotatably connected with the rotating shaft, fixing the positions of the rotating shaft and the connecting rod center, ensuring the stability of the meshing of the driving gear and the driven gear; under the driving action of the driving structure in the lathe and the fixing action of the support, the rotating shaft rotates around the center shaft to drive the driving gears on both sides of the rotating shaft to rotate, and the driven gears on both sides of the rotating shaft rotate in the same direction, thereby driving the connecting rods on both sides of the rotating shaft to rotate in the same direction and at the same frequency around the annular protrusion at the center, realizing the same direction and frequency rotation of the two workbenches connected by the connecting rods, ensuring the normal operation of the feeding and discharging processes; the driven gear is fixedly installed at one end of the annular protrusion close to the workbench, so that the gear meshing is located on the inner side of the connecting rod, which can prevent the rotation of the connecting rod from interfering with the rotation of the rotating shaft, and thereby the support assembly can complete the rotation of the workpiece after processing to the outside of the lathe while rotating the unprocessed workpiece to the inside of the lathe for processing under the driving action of the rotating shaft, so that the feeding and discharging processes of the numerical control machine tool do not need to stop the running of the lathe for a long time, the workpiece processed in the lathe is discharged at the same time as the feeding of the lathe, and the production efficiency of the numerical control machine tool is greatly improved.

[0012] The workbench is a rectangular block, and two cylindrical limiting blocks are arranged on both sides of the short side of the workbench near the long sides.

[0013] The limiting blocks on the same side of the two workbenches are rotatably connected with the two ends of the connecting rod, so that the same positions of the two workbenches remain unchanged during rotation, and the two connecting rods on both sides of the workbench always remain parallel during rotation, so that the workbench always remains horizontal to the ground; when the gear rotates to control the rotation of the workbench to the working position, the telescopic device is elongated; the elongation of the telescopic device limits the workbench while rotating to the machining workpiece position, provides a pushing force to the chuck device, and clamps the workpiece while rotating and changing position; when the connecting rod rotates 180° around the center, the positions of the limiting blocks of the two workbenches are exchanged, so that the numerical control machine tool completes the simultaneous feeding and discharging process, the structure is simple, and the manufacturing cost is reduced.

[0014] The telescopic device comprises a connecting gear, a transmission gear, a rotating rod, a telescopic block and a slide rail; the connecting gear is fixedly installed at the other end of the annular protrusion, the connecting gear has the same diameter and the same number of teeth as the driven gear, the number of teeth of the transmission gear is half of the number of teeth of the connecting gear, an eccentric position of the transmission gear is provided with a cylindrical protrusion, one end of the rotating rod is rotationally connected with the cylindrical protrusion, and the other end of the rotating rod is rotationally connected with the telescopic block; the telescopic block is slidably connected with the slide rail, and the inner side of the slide rail is symmetrically provided with rubber inclined blocks.

[0015] The connecting gear is the same as the driven gear, so that the connecting gear is synchronously rotated with the driven gear while the annular protrusion in the connecting rod is rotated by the driven gear, and the connecting gear is located outside the connecting rod, so that the machine tool does not interfere with the normal working process when feeding materials up and down; the workbench is transferred from the inside of the machine tool to the outside when the connecting gear rotates half a circle, the number of teeth of the transmission gear is half of the number of teeth of the connecting gear, so that the transmission gear rotates one circle when the connecting gear rotates half a circle, the telescopic block is pulled to the bottom and then pulled to the upper end to provide a pushing force to the chuck device; the telescopic block is retracted to the bottom end when the connecting rod rotates 90° to make the two workbenches vertically correspond, which does not hinder the rotation and transposition of the workbench; the diameter of the driven gear is greater than half of the length of the connecting rod, so that the upper surface of the telescopic block is lower than the bottom end of the workbench and the chuck device when the telescopic block is retracted to the bottom end, preventing interference with the movement process of the workbench and the chuck device; the rubber inclined blocks provide friction to the telescopic block, supporting the telescopic block and making the pushing of the telescopic block to the chuck device more stable.

[0016] The chuck device comprises a base plate, a claw, a pull rod, a jacking rod, a push plate and a compression spring; the base plate is fixedly installed on the upper surface of the workbench, a T-shaped groove is formed in the circular array of the upper surface of the base plate, the claw for clamping the workpiece is slidably installed on the base plate, a T-shaped protrusion is arranged on the lower surface of the claw, so that the claw can slide in the T-shaped groove, and the workpiece between the claws is clamped; the two ends of the pull rod are rotationally connected with the claw and the jacking rod respectively, the jacking rod slides up and down in the base plate, and the jacking rod pushes the claw to slide to clamp the workpiece.

[0017] The T-shaped groove is formed in the circular array of the upper surface of the base plate, and the T-shaped protrusion is arranged on the lower surface of the claw, which has high deformation resistance, low manufacturing cost, and can limit the sliding of the claw, so that the claw slides along the T-shaped groove in the base plate to clamp the workpiece; the jacking rod is pushed to automatically clamp the workpiece under the pushing of the pull rod, without the need for manual adjustment of the claw to clamp the workpiece, which simplifies the complicated steps of manual installation of the workpiece, improves the working efficiency of the numerical control machine tool, ensures the smooth removal of the workpiece, and improves the safety of the multi-spindle numerical control lathe.

[0018] The bottom surface of the claw is provided with a rectangular protrusion, the height value of the rectangular protrusion is greater than the length value from the bottom surface of the claw to the bottom surface of the base, the part of the rectangular protrusion higher than the bottom surface of the base is rotationally connected with one end of the pull rod, the pull rod pulls the rectangular protrusion, so that the claw slides to clamp or release the workpiece in the base.

[0019] The part of the rectangular protrusion higher than the bottom surface of the base leaves a space to be connected with one end of the pull rod, so that the claw slides along the T-shaped slot in the base when the top rod is subjected to a sliding force; the upper surface of the claw is stepped, the stepped claw can reduce the radial pressure on the workpiece, reduce the clamping mark of the clamped workpiece, and protect the integrity of the workpiece while clamping the workpiece.

[0020] The bottom surface of the base is arrayed with a rectangular sliding groove matched with the rectangular protrusion, the width of the rectangular sliding groove is equal to the width of the rectangular protrusion, the rectangular sliding groove limits the sliding of the rectangular protrusion, preventing the claw from sliding out of the base.

[0021] The part of the rectangular protrusion from the bottom surface of the claw to the bottom surface of the base is limited to slide in the rectangular sliding groove, the limiting effect of the rectangular sliding groove on the rectangular protrusion can prevent the claw from sliding along the T-shaped slot to the center of the base when the compression spring fails, causing wear on the inner side of the claw and reducing the service life of the chuck device.

[0022] The outer side of the top rod is arrayed with a connecting block, the bottom end of the top rod is coaxially provided with a top plate, the top plate drives the top rod to move, so that the connecting block pulls one end of the pull rod to slide, and then the claw clamps the workpiece, the bottom end of the top rod is provided with a circular hole, and the inner side of the circular hole is provided with a friction rubber strip.

[0023] The number of connecting blocks on the outer side of the top rod corresponds to the pull rod and the claw one by one, so that the pull rod pulls the claw to slide when the top plate slides through the connecting block; the coaxially fixed circular top plate at the bottom end of the top rod can balance the pressure size in all directions of the compression spring during the process of pushing the top plate to slide downward, so that the deformation of the compression spring is more uniform, which can prevent the compression spring from being offset in the axial and vertical directions, thereby reducing the effect of the external radial shear force on the top rod when the top rod slides, and preventing damage to the top rod.

[0024] The center position of the upper surface of the push plate is provided with a circular rod, the diameter of the circular rod is the same as the diameter of the circular hole, the circular rod slides in the circular hole at the bottom end of the top rod when the top rod moves downward, so that the circular rod guides the sliding of the top rod while limiting the compression spring; the outer surface of the circular rod is provided with a friction rubber strip, and the friction rubber strip is serrated.

[0025] The round rod is arranged at the center of the upper surface of the push plate, and is matched with the round hole arranged at the bottom end of the top rod, the round rod is inside the compression spring, and the compression spring is prevented from being deformed; the friction rubber strip is arranged at the outer surface of the round rod and the inner side of the round hole, the friction rubber strip is zigzag-shaped, the round rod is buffered when sliding in the round hole, and the compression spring is prevented from being deformed by the gravity of the push plate when the pushing force of the chuck device disappears.

[0026] The bottom surface of the workbench is provided with a through hole, the center of the through hole is circular with a diameter equal to that of the top rod, the outer side of the through hole is rectangular in a circular array, the position of the rectangular is corresponding to that of the pull rod, and the through hole provides a space for the pull rod and the top rod to move, so that the chuck device is prevented from being interfered.

[0027] The workbench provides support force for the chuck device, the pull rod and the top rod pass through the workbench, the chuck device is fixed more stably on the support assembly, and the safety of the multi-spindle numerical control lathe is improved when the support assembly rotates to carry out feeding and discharging.

[0028] The beneficial effects of the present application are as follows:

[0029] 1. The multi-spindle numerical control vertical special lathe provided by the present application rotates the workbench by rotating the rotating shaft to rotate the processed parts to the outside of the machine tool shell, and moves the unprocessed parts to the inside of the machine tool to start processing, so that the machine tool does not need to stop running during feeding and discharging, and the production efficiency of the numerical control machine tool is improved.

[0030] 2. The multi-spindle numerical control vertical special lathe provided by the present application drives the clamping jaw to slide in the base plate to clamp the workpiece by the extension device during the feeding and discharging of the machine tool, and releases the workpiece by the elastic force of the compression spring, so that manual adjustment of the chuck is not needed, and the workload of the feeding and discharging personnel is reduced.

[0031] 3. The multi-spindle numerical control vertical special lathe provided by the present application can process multiple workpieces at the same time, and the multiple workpieces are automatically clamped in the multiple chuck devices, so that the position deviation of the manually adjusted clamped workpiece is prevented, the interference between the spindles is prevented, and the safety of the multi-spindle numerical control lathe is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0033] The above and other aspects of the present application will now be described, by way of example only, with reference to the accompanying drawings in which:

[0034] Figure 1 is a schematic view of the present application;

[0035] Figure 2 is a sectional view A-A of the present application;

[0036] Figure 3 is a side view of the support assembly and chuck device of the present application;

[0037] Figure 4 is a schematic diagram of the present application based on Figure 3

[0038] Figure 5 is a schematic view of the support assembly of the present application;

[0039] Figure 6 is a top view of the present application based on Figure 5

[0040] Figure 7 is a schematic view of the telescopic device of the present application;

[0041] Figure 8 is a schematic view of the chuck device of the present application;

[0042] Figure 9 is a sectional view B-B of the chuck device of the present application;

[0043] Figure 10 is a schematic view of the base plate of the present application;

[0044] Figure 11 is a schematic view of the clamping pawl of the present application.

[0045] In the drawings: 1, numerical control system; 2, lathe shell; 3, protective door; 4, main shaft; 5, support assembly; 51, support; 52, rotating shaft; 53, driving gear; 54, connecting rod; 541, annular protrusion; 55, workbench; 551, limiting block; 552, through hole; 56, driven gear; 57, telescopic device; 571, connecting gear; 572, transmission gear; 5721, cylindrical protrusion; 573, rotating rod; 574, telescopic block; 575, sliding rail; 5751, rubber inclined block; 6, chuck device; 61, base plate; 611, T-shaped slot; 612, rectangular sliding slot; 62, clamping pawl; 621, T-shaped protrusion; 622, rectangular protrusion; 63, pull rod; 64, jacking rod; 641, connecting block; 642, top plate; 643, circular hole; 644, friction rubber strip; 65, push plate; 652, circular rod; 66, compression spring. DETAILED DESCRIPTION

[0046] ​​In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the drawings and specific embodiments of the specification.

[0047] As shown in Figure 1 A multi-spindle numerical control vertical special lathe, comprising a numerical control system 1, a lathe shell 2, a protective door 3, a main shaft 4, the numerical control system 1 is installed on the outside of the lathe shell 2, the protective door 3 is slidingly installed at the opening of the lathe shell 2, the main shaft 4 is installed inside the lathe shell 2, the tool below the main shaft 4 processes the workpiece under the program control of the numerical control system 1; it also includes a support assembly 5 and a chuck device 6, the support assembly 5 is controlled to rotate by the numerical control system 1, and the processed parts are rotated to the outside of the machine tool shell, while the unprocessed parts are moved to the inside of the machine tool to start processing; the number of the chuck device 6 is twice the number of the main shaft 4, the chuck device 6 is installed above the support assembly 5, and the workpiece to be processed is clamped by pushing force during loading, and the processed workpiece is released by the elastic force of the compression spring 66.

[0048] Before the multi-spindle numerical control vertical special lathe starts processing, the protective door 3 is slid upward to open, the numerical control system 1 controls the chuck device to clamp the workpiece to be processed, and then controls the support assembly 5 to rotate to rotate the workpiece to be processed to the inside of the machine tool shell for processing; when the machine tool is processing, the protective door 3 is slid downward to close, isolating the inside and outside of the machine tool shell, blocking the flying chips generated during the processing of the workpiece in the protective door 3, preventing harm to the workers, a part of the support assembly 5 and the chuck device installed above it are blocked outside the protective door 3, facilitating the installation of the workpiece to be processed, so that the machine tool can complete the loading process while processing the workpiece, without stopping the operation of the machine tool, improving the production efficiency of the numerical control machine tool.

[0049] As shown in Figures 2 to 7 The support assembly 5 includes a support 51, a rotating shaft 52, a driving gear 53, a connecting rod 54, a workbench 55, a driven gear 56 and an extension device 57; one end of the support 51 is fixedly installed on the inside of the lathe shell 2, the other end of the support 51 is rotatably installed with the rotating shaft 52, the rotating shaft 52 is driven to rotate together with the driving gear 53 fixedly connected at both ends of the rotating shaft 52 through the rotation of the driving structure inside the lathe; the two ends of the connecting rod 54 are respectively rotatably connected with two workbenches 55, the center of the connecting rod 54 is provided with an annular protrusion 541 on the side close to the workbench 55, the inside of the annular protrusion 541 is rotatably connected with the support 51, and the support of the support 51 fixes the position of the center of the connecting rod 54 and the rotating shaft 52; the outside of the annular protrusion 541 is fixedly installed with the driven gear 56, the driven gear 56 drives the two workbenches 55 to rotate with the center of the annular protrusion 541 as the center through the meshing action with the driving gear 53; the extension device 57 is fixedly installed on the inside of the lathe shell 2.

[0050] The middle part of the support 51 passes through the annular protrusion 541 to fix the connecting rod 54 inside the machine tool. When the machine tool is feeding or discharging, the support assembly 5 rotates, the support 51 fixes the positions of the rotating shaft 52 and the center of the connecting rod 54, keeps the center positions of the driving gear 53 and the driven gear 56 unchanged, and makes the engagement of the driving gear 53 and the driven gear 56 more stable. When the machine tool is feeding or discharging, the rotating shaft 52 rotates around the central axis under the driving action of the driving structure inside the lathe. The rotating shaft 52 rotates to drive the driving gear 53 fixedly connected to the two ends of the rotating shaft 52 to rotate around the coaxial center. Under the meshing action of the gears, the driving gear 53 on the two sides of the rotating shaft 52 drives the two driven gears 56 to rotate, respectively. The two driven gears 56 on the two sides of the workbench 55 are opposite to the central line of the two driving gears 53 in the axial direction, so that the two driven gears 56 at the two ends rotate in the same direction, and further drive the two connecting rods 54 to rotate around the center as the center in the same direction and at the same frequency. When the two workbenches 55 rotate, they are kept synchronous under the pulling action of the connecting rods 54 when the support assembly 5 rotates to feed. The rotating shaft 52 rotates 180° to realize the position exchange of the two workbenches 55. When the workpiece to be processed is rotated to the inside of the machine tool shell with the workbench 55, the workpiece processed is rotated to the outside of the machine tool shell for convenient replacement by the worker.

[0051] The support assembly 5 completes the transfer of the workpiece under the driving action of the rotating shaft 52. This process makes the feeding and discharging processes of the numerical control machine tool not need to stop the running machine tool for a long time. The workpiece processed in the machine tool is discharged at the same time as the workpiece to be processed is fed to the machine tool, so that the production efficiency of the numerical control machine tool is greatly improved.

[0052] As shown in Figure 5 and Figure 6 , the workbench 55 is a rectangular block. Two cylindrical limit blocks 551 are arranged on the two sides of the short side of the workbench 55, respectively close to the two long sides. The ends of the two limit blocks 551 are rotatably connected to one end of the connecting rod 54, respectively.

[0053] When the annular protrusion 541 in the center of the connecting rod 54 is rotated by the rotation of the driven gear 56, the two ends of the two connecting rods 54 pull the limiting blocks 551 at the same position of the two worktables 55 respectively, so that the same positions of the two worktables 55 are synchronized in rotation and the distance is kept unchanged, and the two connecting rods 54 on both sides of the worktable 55 always keep parallel during the rotation of the worktable 55, so that the worktable 55 always keeps horizontal to the ground during the rotation; when the two worktables 55 are vertical, the gear rotation control telescopic device 57 starts to extend, and the worktable 55 continues to rotate to the working position, and the telescopic device 57 extends to the top to provide a pushing force for the chuck device to clamp the workpiece; when the connecting rod 54 rotates 180° around the center, the positions of the limiting blocks 551 of the two worktables 55 are exchanged, so that the numerical control machine tool completes the process of simultaneous feeding and discharging, and the structure is simple, and the manufacturing cost is reduced.

[0054] The telescopic device 57 comprises a connecting gear 571, a transmission gear 572, a rotating rod 573, a telescopic block 574 and a sliding rail 575; the connecting gear 571 is fixedly installed at the other end of the annular protrusion 541, the connecting gear 571 has the same diameter and the same number of teeth as the driven gear 56, the transmission gear 572 has half the number of teeth of the connecting gear 571, the eccentric position of the transmission gear 572 is provided with a cylindrical protrusion 5721, one end of the rotating rod 573 is rotationally connected with the cylindrical protrusion 5721, and the other end of the rotating rod 573 is rotationally connected with the telescopic block 574; the telescopic block 574 is slidably connected with the sliding rail 575, and the inner side of the sliding rail 575 is symmetrically provided with rubber inclined blocks 5751.

[0055] The connecting gear 571 is fixedly connected with the annular protrusion 541, the transmission gear 572 drives the connecting rod 54 to rotate, so that the annular protrusion 541 drives the coaxial rotation of the connecting gear 571, the connecting gear 571 is engaged with the transmission gear 572 to drive the transmission gear 572 to rotate, the cylindrical protrusion 5721 pulls one end of the rotating rod 573 to make the other end of the rotating rod 573 pull the telescopic block 574 to slide up and down in the sliding rail 575, and the rubber inclined blocks 5751 provide friction force to the telescopic block 574 to support the telescopic block 574; when the connecting gear 571 rotates 90°, the transmission gear 572 rotates 180° to pull the telescopic block 574 from the top end to the bottom end; when the connecting gear 571 rotates 180°, the positions of the two worktables 55 inside and outside the machine tool are exchanged, the telescopic block 574 slides from the bottom end to the top end to exert a pushing force on the chuck device 6, so that the worktable 55 position conversion and clamping of the workpiece are realized.

[0056] As Figures 8 to 11As shown, the chuck device 6 comprises a base plate 61, a jaw 62, a pull rod 63, a top rod 64, a push plate 65 and a compression spring 66; the base plate 61 is fixedly installed on the upper surface of the workbench 55, the upper surface of the base plate 61 is circularly arrayed with T-shaped grooves 611, the jaw 62 for clamping the workpiece is slidingly installed on the base plate 61, the lower surface of the jaw 62 is provided with a T-shaped protrusion 621, so that the jaw 62 can slide in the T-shaped groove 611, thereby clamping the workpiece between the jaws 62; the two ends of the pull rod 63 are rotatably connected with the jaw 62 and the top rod 64 respectively, the top rod 64 slides up and down in the base plate 61, and the top rod 64 slides down to clamp the workpiece by pushing the jaw 62.

[0057] When the support assembly 5 rotates to make the machine tool blank, the chuck device 6 rotates with the workbench 55 to the outside of the machine tool shell, the extension device 57 in the support assembly 5 cancels the pushing force generated by the top rod 64 under the control of the numerical control system 1, the compression spring 66 pulls the top rod 64 to slide down by the elastic force, the sliding of the top rod 64 drives one end of the pull rod 63 to slide down, thereby the other end of the pull rod 63 pulls the jaw 62 to slide along the T-shaped groove 611 in the base plate 61 to the outside of the base plate 61, so that the jaw 62 releases the workpiece; when the workpiece rotates to the inside of the machine tool, the numerical control system 1 controls the extension device 57 to push the top rod 64 to slide up and press the compression spring 66, drives one end of the pull rod 63 to slide up, so that the other end of the pull rod 63 pulls the jaw 62 to slide along the T-shaped groove 611 in the base plate 61 to the outside of the base plate 61, thereby the jaw 62 clamps the workpiece.

[0058] The chuck device completes the clamping and dismounting process of the workpiece, without the need for manual adjustment of the jaw 62 by the worker, simplifying the cumbersome steps of manual dismounting of the workpiece, and greatly improving the working efficiency of the numerical control machine tool; and the chuck device is automatically clamped by the pushing force, preventing the positional deviation caused by manual adjustment of the clamped workpiece, thereby preventing the mutual interference of the movements between the plurality of spindles 4 of the machine tool, and improving the safety of the multi-spindle numerical control lathe.

[0059] As shown in Figure 10 and Figure 11 , the bottom surface of the jaw 62 is provided with a rectangular protrusion 622, the height value of the rectangular protrusion 622 is greater than the length value from the bottom surface of the jaw 62 to the bottom surface of the base plate 61, and the part of the rectangular protrusion 622 higher than the bottom surface of the base plate 61 is rotatably connected with one end of the pull rod 63, the pull rod 63 pulls the rectangular protrusion 622 to make the jaw 62 slide in the base plate 61 to clamp or release the workpiece.

[0060] The bottom surface of the base plate 61 is arrayed with rectangular sliding grooves 612 matched with the rectangular protrusions 622, the width of the rectangular sliding groove 612 is equal to the width of the rectangular protrusion 622, and the rectangular sliding groove 612 limits the sliding of the rectangular protrusion 622 to prevent the jaw 62 from sliding out of the base plate 61.

[0061] When the chuck device clamps the workpiece, the push rod 64 is pushed upward to slide, the rectangular block 622 is limited to slide in the rectangular sliding groove 612 on the bottom surface of the bottom plate 61 by the pull rod 63, the T-shaped block of the claw 62 is driven to slide along the T-shaped groove 611 to the outside of the bottom plate 61, which prevents the push rod 64 from sliding downward to damage the compression spring 66 and cause abrasion to the inside of the claw 62 when the compression spring 66 fails; when the chuck device releases the workpiece, it also prevents the claw 62 from sliding out of the bottom plate 61 along the T-shaped groove 611 under the elastic force of the compression spring 66, which ensures the safety of the lathe operation.

[0062] As shown in Figure 8 and Figure 9 , the outside of the push rod 64 is arrayed with a connecting block 641, and the bottom end of the push rod 64 is coaxially provided with a top plate 642, which drives the push rod 64 to move, so that the connecting block 641 pulls one end of the pull rod 63 to slide, and then the claw 62 clamps the workpiece, and the bottom end of the push rod 64 is provided with a circular hole 643, and the inside of the circular hole 643 is provided with a friction rubber strip 644.

[0063] When the chuck device clamps the workpiece, the telescopic device 57 pushes the top plate 642, the top plate 642 exerts pressure on the compression spring 66 to compress the compression spring 66, the top plate 642 slides upward to drive the push rod 64 and the connecting block 641 to slide upward, the connecting block 641 drives one end of the pull rod 63 to slide upward, the other end of the pull rod 63 pulls the claw 62 to slide in the bottom plate 61 to the direction away from the push rod 64, and the chuck device clamps the workpiece; when the chuck device releases the workpiece, the telescopic device 57 retracts, the pushing force of the supporting assembly 5 on the top plate 642 disappears, the compression spring 66 pulls the top plate 642 under the gravity of the push plate 65, the top plate 642 drives the push rod 64 to slide downward, the other end of the pull rod 63 pushes the claw 62 to slide in the bottom plate 61 to the direction close to the push rod 64 to complete the unloading process, and the working efficiency of the numerical control machine tool is improved.

[0064] The center of the upper surface of the push plate 65 is provided with a circular rod 652, the diameter of the circular rod 652 is the same as that of the circular hole 643, the circular rod 652 slides in the circular hole 643 at the bottom end of the push rod 64 when the push rod 64 moves downward, so that the circular rod 652 guides the sliding of the push rod 64 and limits the compression spring 66; the outer surface of the circular rod 652 is provided with a friction rubber strip 644, and the friction rubber strip 644 is serrated.

[0065] After the machining is completed, the telescopic device 57 is retracted, the pushing force of the chuck device disappears, the friction rubber strip 644 on the outer wall of the circular rod 652 and the inside of the circular hole 643 is in contact to produce friction, which buffers the stretching process of the compression spring 66, slows down the process of releasing the workpiece by the chuck device, and increases the safety of the device.

[0066] As Figure 6 The bottom surface of the workbench 55 is provided with a through hole 552, the center of the through hole 552 is circular with a diameter equal to that of the top rod 64, the outer side of the through hole 552 is rectangular in circular array, the position of the rectangular corresponds to the position of the pull rod 63, the through hole 552 provides a space for the pull rod 63 and the top rod 64 to move, preventing interference with the clamping process of the chuck device 6.

[0067] When the machine tool works, the workbench 55 provides support force for the chuck device 6, the up and down sliding of the top rod 64 drives the rotation of the pull rod 63, the pull rod 63 and the top rod 64 pass through the workbench 55 through the through hole 552, the through hole 552 provides a space for the rotation of the pull rod 63, and the through hole 552 limits the movement of the top rod 64, when the chuck device clamps and releases the workpiece, the safety of the multi-spindle numerical control lathe during feeding and discharging is improved.

[0068] In the working process of the present application, the numerical control system 1 controls the rotation of the rotating shaft 52 to make the workbench 55 inside and outside the machine tool rotate and exchange positions, when the positions of the two workbenches 55 are vertically rotated to horizontal, the telescopic device 57 is extended to push the top rod 64, the clamping jaw 62 is slid along the T-shaped groove 611 to clamp the workpiece to be processed, and the workpiece to be processed is rotated to the inside of the machine tool housing for processing; after the machine tool completes processing, the numerical control system 1 controls the rotation of the rotating shaft 52 to drive the rotation of the workbench 55, and at the same time drives the telescopic device 57 to retract through the gear, so that the pushing force applied in the chuck device disappears, under the action of the elastic force of the compression spring 66 and the gravity of the push plate 65, the top rod 64 slides downward, the clamping jaw 62 slides outward along the T-shaped groove 611, the workpiece is released, and is rotated to the outside of the machine tool housing to reinstall the workpiece to be processed, this process is carried out at the same time as the processing of the machine tool, so that the machine tool can disassemble and clamp the workpiece without stopping running, reducing the time required for the multi-spindle numerical control machine tool to install multiple workpieces, and improving the production efficiency of the numerical control machine tool.

[0069] The above is only a preferred specific embodiment of the present application, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical scope disclosed by the present application. Therefore, the present application is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-spindle numerical control vertical special-purpose lathe, comprising a numerical control system (1), a lathe shell (2), a protective door (3), and a main shaft (4), wherein the numerical control system (1) is installed on the outside of the lathe shell (2), the protective door (3) is slidingly installed at the opening of the lathe shell (2), and the main shaft (4) is installed inside the lathe shell (2), and a tool below the main shaft (4) processes a workpiece under the program control of the numerical control system (1); characterized in that, Also include support assembly (5) and chuck device (6), the support assembly (5) is controlled rotation by numerical control system (1), the part after processing is rotated to the outside of lathe shell, and the part before processing is moved to the inside of lathe to start processing;The number of chuck device (6) is twice the number of main shaft (4), chuck device (6) is installed above support assembly (5), chuck device (6) is driven by connecting rod mechanism in the position conversion of support assembly (5) to drive chuck jaw (62) to clamp or open, and then cooperate with lathe to turn the part; The support assembly (5) includes support (51), rotating shaft (52), driving gear (53), connecting rod (54), workbench (55), driven gear (56) and telescopic device (57);The support (51) is U-shaped, one end of the support (51) is installed on the inside of the lathe shell (2), the other end of the support (51) is provided with the rotating shaft (52), the two ends of the rotating shaft (52) are connected with the driving gear (53), the two ends of the connecting rod (54) are connected with the two workbenches (55) respectively, the center of the connecting rod (54) is provided with an annular protrusion (541), the inside of the annular protrusion (541) is connected with the support (51), the outside of one end of the annular protrusion (541) is provided with the driven gear (56), the diameter of the driven gear (56) is greater than half the length of the connecting rod (54);The telescopic device (57) is installed on the inside of the lathe shell (2); The telescopic device (57) includes connecting gear (571), transmission gear (572), rotating rod (573), telescopic block (574) and slide rail (575);The connecting gear (571) is installed on the other end of the annular protrusion (541), the diameter and the number of teeth of the connecting gear (571) are the same as those of the driven gear (56), the number of teeth of the transmission gear (572) is half that of the connecting gear (571), the eccentric position of the transmission gear (572) is provided with a cylindrical protrusion (5721), one end of the rotating rod (573) is connected with the cylindrical protrusion (5721), the other end of the rotating rod (573) is connected with the telescopic block (574);The telescopic block (574) is connected with the slide rail (575) in sliding mode, the inside of the slide rail (575) is symmetrically provided with rubber inclined blocks (5751); The chuck device (6) includes base plate (61), chuck jaw (62), pull rod (63), top rod (64), push plate (65) and compression spring (66);The base plate (61) is installed on the upper surface of the workbench (55), the upper surface of the base plate (61) is provided with T-shaped grooves (611) in circular array, the chuck jaw (62) is slidably installed on the base plate (61), the lower surface of the chuck jaw (62) is provided with T-shaped protrusions (621);The two ends of the pull rod (63) are connected with the chuck jaw (62) and the top rod (64) respectively, the compression spring (66) is clamped between the top rod (64) and the push plate (65); The outer side of the top rod (64) is provided with a connecting block (641), the bottom end of the top rod (64) is coaxially provided with a top plate (642), and the bottom end of the top rod (64) is provided with a round hole (643); the upper surface of the push plate (65) is provided with a round rod (652) matched with the round hole (643), and the inner side of the round hole (643) and the outer surface of the round rod (652) are provided with a friction rubber strip (644), which is zigzag-shaped; The bottom surface of the workbench (55) is provided with a through hole (552), the center of the through hole (552) is circular with a diameter equal to that of the top rod (64), and the outer side of the through hole (552) is rectangular in a circular array, and the position of the rectangular corresponds to the position of the pull rod (63).

2. A multi-spindle CNC vertical special purpose lathe according to claim 1, characterized in that: The workbench (55) is a rectangular block, two cylindrical limiting blocks (551) are arranged on the two sides of the short side of the workbench (55) respectively near the two long sides, and the ends of the two limiting blocks (551) are connected with one end of the connecting rod (54) respectively.

3. A multi-spindle CNC vertical special purpose lathe according to claim 1, characterized in that: The bottom surface of the claw (62) is provided with a rectangular protrusion (622), the height value of the rectangular protrusion (622) is greater than the length value from the bottom surface of the claw (62) to the bottom surface of the base plate (61), and the part of the rectangular protrusion (622) higher than the bottom surface of the base plate (61) is connected with one end of the pull rod (63).

4. A multi-spindle CNC vertical special purpose lathe according to claim 3, characterized in that: The bottom surface of the base plate (61) is provided with a rectangular sliding groove (612) in an array, the width of the rectangular sliding groove (612) is equal to the width of the rectangular protrusion (622), and the length value of the rectangular sliding groove (612) is less than the radius value of the base plate (61).

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