Double-station four-axis rotation exchange workbench

Abstract

The invention discloses a double-station four-shaft rotating exchange workbench which comprises a fixing sleeve and a tailstock, a main shaft is rotatably arranged between the fixing sleeve and the tailstock, and the double-station four-shaft rotating exchange workbench further comprises a rotating head fixedly arranged at one end of the main shaft and rotatably connected into the fixing sleeve; the end plate is rotationally connected with the rotating head, and an external motor for driving the rotating head to rotate is mounted on the end plate; the rotating disc is coaxially and fixedly arranged on the main shaft, two rotating seats are symmetrically arranged on the upper circumference of the rotating disc, a support is fixedly arranged at the other end of the main shaft, a working table is rotationally arranged between the rotating seats and the support, and a driving assembly for driving the working table to rotate is arranged on the rotating seats. The external motor is arranged to drive the main shaft to rotate, the driving assembly drives the workbenches to rotate, then the two workbenches can be flexibly switched between the cutting station and the feeding and discharging station, horizontal installation of workpieces is achieved on the feeding and discharging station, and the workbenches can rotate to any angle for machining on the cutting station.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting workbenches, in particular to a double-station four-axis rotary exchange workbench. Background Art

[0002] The double-station horizontal machining center with exchangeable worktable has horizontal exchange of worktables. While processing the workpiece on the worktable of one station, the workpiece can be installed and removed on the worktable of another station, which shortens the auxiliary processing time and improves production efficiency.

[0003] In the existing industry, in order to improve the rigidity of structural parts, whole sheet milling is used. This results in a large amount of cutting, easy accumulation of iron chips, and heat concentrated next to the workpiece on the workbench, causing the workpiece to deform due to heat and the chips to scratch the workpiece surface. At the same time, built-up edge is easily generated on the tool, affecting the final processing quality of the workpiece and shortening the service life of the tool. In this regard, patent document CN210306736U disclosed a fast-switching four-type machining platform on the announcement date of April 14, 2020. The disclosed technical solution is as follows: it belongs to the field of lathe processing technology, including a base, the base is symmetrically arranged, and a machining table is provided between the two symmetrical bases. The machining table is a cubic structure, and the six faces of the machining table include two connecting surfaces and four machining surfaces. The two connecting surfaces of the machining table are respectively fixedly connected to the base, and the four machining surfaces of the machining table are respectively provided with different four-type mounting devices. One of the bases is provided with a servo motor, and the servo motor is externally connected to a rotating disk. The rotating disk is fixedly connected to one side of the machining table through multiple connecting rods. A rotating shaft is provided on the other side of the machining table, and a fixed sleeve is provided on the base adjacent to the rotating shaft, and the rotating shaft is inserted into the fixed sleeve.

[0004] It can be seen that the above rotating switching worktable structure can avoid chip accumulation. However, in actual operation, in order to improve processing efficiency and precision, the workpiece needs to be processed by clamping it vertically on the worktable, and loading and unloading the workpiece requires the worktable to be horizontal. However, the existing horizontal exchange worktable technology of the double-station horizontal machining center cannot achieve the requirements of simultaneous workpiece processing and chip removal. Therefore, a double-station four-axis rotating exchange worktable is urgently needed to solve the above problem. Summary of the Invention

[0005] The purpose of the present invention is to provide a double-station four-axis rotary exchange workbench to solve the above-mentioned shortcomings in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A double-station four-axis rotary exchange workbench includes a fixed sleeve and a tailstock, a main shaft is rotatably arranged between the fixed sleeve and the tailstock, and also includes: a rotating head, which is fixedly arranged at one end of the main shaft and rotatably connected in the fixed sleeve; an end plate, which is axially movably arranged on the end of the fixed sleeve away from the tailstock and rotatably connected to the rotating head, and an external motor for driving the rotating head to rotate is installed on it; a turntable, which is coaxially fixed on the main shaft and has two rotating seats symmetrically arranged on it. A support is fixedly arranged at the other end of the main shaft, a workbench is rotatably arranged between the rotating seat and the support, and a driving component for driving the workbench to rotate is arranged on the rotating seat.

[0008] Preferably, a fixed chain plate is coaxially fixed on the fixed sleeve, a movable chain plate is coaxially fixed on the rotating head, and a control component for controlling the axial movement of the rotating head to engage or separate the fixed chain plate and the movable chain plate is provided on the fixed sleeve.

[0009] Preferably, the control component includes an oil chamber arranged in a fixed sleeve, a piston movably arranged in the oil chamber is fixedly arranged on the outside of the rotating head, and a first oil circuit and a second oil circuit are relatively arranged on the fixed sleeve, and the first oil circuit and the second oil circuit are respectively connected to the opposite sides of the oil chamber.

[0010] Preferably, a tail sleeve is fixedly provided on the main shaft and is rotatably connected to the tail stock. The tail sleeve moves axially with the main shaft and the rotating head. Another set of fixed tooth discs and movable tooth discs are provided between the tail stock and the tail sleeve, and the two sets of fixed tooth discs and movable tooth discs are synchronously engaged or separated.

[0011] Preferably, rotating shafts are fixedly provided at both ends of the workbench, and the rotating shafts at both ends are rotatably connected to the rotating seat and the support respectively.

[0012] Preferably, the driving assembly is a built-in motor provided on the rotary seat, and the output end of the built-in motor is connected to the rotating shaft.

[0013] Preferably, the driving assembly includes a convex ring coaxially arranged on the outer wall of the fixed sleeve, an arc-shaped rack is provided on the convex ring, the rotating shaft rotates through the rotating seat and is coaxially connected to a linkage gear matching the arc-shaped rack at the end.

[0014] Preferably, the rotating shaft is provided with a limiting component for limiting its own rotation relative to the rotating seat, and the limiting component cancels the limit only during the transmission process of the arc-shaped rack meshing with the linkage gear.

[0015] Preferably, the limit assembly includes a clamping rod that is arranged on the rotating shaft and is movable along its radial direction, a clamping groove that matches the clamping rod is provided on the inner wall of the rotating seat, a linkage block is elastically arranged in the rotating shaft, a sliding groove is provided on the linkage block, a sliding pin that matches the sliding groove is provided on the clamping rod, a trigger rod is fixedly provided on the linkage block and is movable axially through the end of the rotating shaft, and a magnetic plate is provided on the convex ring, which is arranged in the same curvature range as the arc rack, and the trigger rod is attracted and moved by the magnetic plate when passing through it.

[0016] Preferably, a ring body is rotatably sleeved on the convex ring, an arc-shaped rack is arranged on the outer wall of the ring body, and an adjustment component for adjusting the rotation angle of the ring body is arranged on the convex ring.

[0017] In the above technical solution, the beneficial effects of the present invention are:

[0018] This dual-station four-axis rotary exchange workbench is equipped with an external motor to drive the spindle rotation, and a drive component to drive the workbench rotation, so that the two workbenches can be flexibly switched between the cutting station and the loading and unloading station. Moreover, not only can the workpiece be installed horizontally at the loading and unloading station, but the workbench can also be rotated to any angle for processing at the cutting station, solving the problem of difficult chip removal. At the same time, the rotating shafts of the spindle and the workbench can participate in the linkage, expanding the function of the exchange mechanism.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall structure provided in Example 1 of the present invention;

[0023] Figure 2 A schematic diagram of a front cross-sectional structure provided in the first embodiment of the present invention;

[0024] Figure 3 The present invention provides Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 4 A schematic diagram of the overall structure of the second embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a front cross-sectional structure provided in the second embodiment of the present invention;

[0027] Figure 6 The present invention provides Figure 5 Schematic diagram of the enlarged structure at B in the middle;

[0028] Figure 7 A schematic diagram of the structure of a drive assembly provided in the second embodiment of the present invention;

[0029] Figure 8 A schematic diagram of various structures on a ring body provided in Example 2 of the present invention;

[0030] Figure 9 This is a schematic diagram of a partial top-view cross-sectional structure provided in Example 3 of the present invention.

[0031] Description of reference numerals:

[0032] 1. Fixed sleeve; 2. Tailstock; 3. Spindle; 4. Rotating head; 5. End plate; 6. External motor; 7. Turntable; 8. Rotating seat; 9. Support; 10. Workbench; 11. Fixed chainring; 12. Moving chainring; 13. Oil chamber; 14. Piston; 15. First oil circuit; 16. Second oil circuit; 17. Tailstock; 18. Rotating shaft; 19. Internal motor; 20. Raised ring; 21. Curved rack; 22. Linkage gear; 23. Clamping rod; 24. Clamping slot; 25. Linkage block; 26. Sliding slot; 27. Sliding pin; 28. Trigger rod; 29. ​​Magnetic plate; 30. Ring body; 31. Movable slot; 32. Extrusion plate; 33. Extension slot; 34. Docking slot; 35. Elastic slot; 36. Top block; 37. Arc slot; 38. Slope; 39. Adjustment motor; 40. Adjustment gear; 41. Internal gear ring. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0034] See also Figure 1-9 , an embodiment of the present invention provides a double-station four-axis rotary exchange workbench, including a fixed sleeve 1 and a tailstock 2, a main shaft 3 is rotatably arranged between the fixed sleeve 1 and the tailstock 2, and also includes: a rotary head 4, which is fixedly arranged at one end of the main shaft 3 and rotatably connected in the fixed sleeve 1; an end plate 5, which is axially movable and arranged on the end of the fixed sleeve 1 away from the tailstock 2, and is rotatably connected to the rotary head 4, and an external motor 6 for driving the rotary head 4 to rotate is installed on it; a turntable 7, which is coaxially fixed on the main shaft 3, and has two rotary seats 8 symmetrically arranged on it. A support 9 is fixedly arranged at the other end of the main shaft 3, and a workbench 10 is rotatably arranged between the rotary seat 8 and the support 9, and a driving component for driving the workbench 10 to rotate is arranged on the rotary seat 8.

[0035] Specifically, the fixed sleeve 1 and the tailstock 2 are fixed on the frame or the production line, and the two are relatively fixed; the main shaft 3 includes a coaxial rotating body at both ends and a groove provided on the plate carrier in the middle, the plate carrier is blocked between the two workbenches 10, and the groove can be used to collect waste chips; the rotating head 4 is coaxial with the rotating body part of the main shaft 3; the end plate 5 is embedded in the fixed sleeve 1, and the outer wall of the end plate 5 and the inner wall corresponding to the fixed sleeve 1 are provided with guide ribs along the axial direction of the fixed sleeve 1, thereby limiting the end plate 5 to move only along the axial direction of the fixed sleeve 1; the rotating head 4 is connected to the end plate 5 in rotation, so that the rotating head 4 rotates relative to the end plate 5 and moves axially synchronously with the end plate 5; the external motor 6 is controlled by the servo system, which drives the rotating head 4 to rotate to control the main shaft 3 to rotate 180° each time; the turntable 7 is coaxially fixed to the main shaft On the rotating body of the shaft 3 close to one end of the fixed sleeve 1, the rotation of the turntable 7 causes the two workbenches 10 to rotate around the main shaft 3 to switch the upper and lower positions, wherein the upper position corresponds to the cutting station and the lower position corresponds to the loading and unloading station. In addition, each time the main shaft 3 rotates to switch the positions of the two workbenches 10, the plate carrier of the main shaft 3 is in a horizontal position to meet the function of receiving waste chips. During the switching process, the plate carrier gradually tilts to realize the centralized dumping of waste chips and prevent the waste chips from falling onto the workbench 10 below; the support height of the rotary seat 8 and the support 9 for the workbench 10 is consistent, and the rotation axis of the workbench 10 is parallel to the main shaft 3; the drive assembly is controlled and operated by the servo system, thereby under the joint control of the servo system, the rotation of the main shaft 3 and the rotation of the workbench 10 can be linked. In actual use, this technical solution drives the spindle 3 to rotate through the external motor 6, and the driving component drives the worktable 10 to rotate, so that the two worktables 10 can be flexibly switched between the cutting station and the loading and unloading station. Moreover, not only can the horizontal installation of the workpiece be achieved at the loading and unloading station, but the worktable 10 can also be rotated to any angle for processing at the cutting station, solving the problem of difficult chip removal. At the same time, the rotating shafts of the spindle 3 and the worktable 10 can participate in the linkage, expanding the function of the exchange mechanism.

[0036] Compared with the prior art, the embodiment of the present invention proposes a dual-station four-axis rotary exchange worktable which drives the spindle 3 to rotate by setting an external motor 6, and a drive component to drive the worktable 10 to rotate, so that the two worktables 10 can be flexibly switched between the cutting station and the loading and unloading station. Moreover, not only can the horizontal installation of the workpiece be achieved at the loading and unloading station, but the worktable 10 can also be rotated to any angle for processing at the cutting station, thereby solving the problem of difficult chip removal. At the same time, the rotating shafts of the spindle 3 and the worktable 10 can participate in the linkage, thereby expanding the function of the exchange mechanism.

[0037] As the preferred technical solution of this embodiment, a fixed chain disc 11 is coaxially fixed on the fixed sleeve 1, and a movable chain disc 12 is coaxially fixed on the rotating head 4. A control component is provided on the fixed sleeve 1 for controlling the axial movement of the rotating head 4 to engage or separate the fixed chain disc 11 and the movable chain disc 12. Specifically, the fixed chain disc 11 and the movable chain disc 12 are preferably a ratchet structure, which limits the relative rotation between the two when they are closely engaged, and allows relative rotation between the two when they are far away from each other; the movable chain disc 12 moves with the rotating head 4; the control component can be integrated with a circular grating, and after the rotation angle of the main shaft 3 is reached, the control component can be triggered immediately for precise positioning.

[0038] As a further preferred technical solution of this embodiment, the control component includes an oil chamber 13 provided in the fixed sleeve 1, a piston 14 movably provided in the oil chamber 13 is fixedly provided on the outside of the rotating head 4, a first oil passage 15 and a second oil passage 16 are relatively provided on the fixed sleeve 1, and the first oil passage 15 and the second oil passage 16 are respectively connected to the opposite sides of the oil chamber 13. Specifically, the oil chamber 13 is recessed in an annular shape on the inner wall of the fixed sleeve 1, and the piston 14 is fixedly provided on the outside of the rotating head 4 and is in the oil chamber 13. The outer wall of the piston 14 is tightly fitted with the inner wall of the oil chamber 13 and can move relatively; the first oil passage 15 is provided on the upper side and is connected to the oil chamber 13. The cavity 13 is away from the side of the main shaft 3, and the second oil circuit 16 is arranged on the lower side and is connected to the side of the oil cavity 13 close to the main shaft 3; two oil inlets are provided on the outside of the fixed sleeve 1 to respectively connect the first oil circuit 15 and the second oil circuit 16. Under the control of the servo system, the oil inlet and outlet directions of the two oil inlets are opposite and can be switched forward and reverse, thereby making it possible to switch the oil flow direction in the first oil circuit 15 and the second oil circuit 16, thereby changing the amount of oil on both sides of the piston 14 in the oil cavity 13, thereby realizing the driving of the piston 14, and then driving the rotating head 4 to move axially relative to the fixed sleeve 1, without affecting the rotation of the rotating head 4 relative to the fixed sleeve 1. In actual use of this technical solution, the first oil circuit 15 supplies oil to the oil chamber 13, and the second oil circuit 16 discharges oil from the oil chamber 13, then the piston 14 drives the rotating head 4 to move closer to the tailstock 2, and the rotating head 4 drives the movable chain disc 12 to separate from the fixed chain disc 11, thereby, the rotating head 4 can rotate, that is, the main shaft 3 can rotate; and when the first oil circuit 15 discharges oil from the oil chamber 13 and the second oil circuit 16 supplies oil to the oil chamber 13, the piston 14 drives the rotating head 4 to move away from the tailstock 2, and the rotating head 4 drives the movable chain disc 12 to engage with the fixed chain disc 11, thereby, the rotating head 4 is fixed, that is, the main shaft 3 is fixed.

[0039] As the preferred technical solution of this embodiment, a tail sleeve 17 is fixedly provided on the main shaft 3 and is rotatably connected to the tail stock 2. The tail sleeve 17 moves axially with the main shaft 3 and the rotating head 4. Another set of fixed toothed discs 11 and movable toothed discs 12 are provided between the tail stock 2 and the tail sleeve 17, and the two sets of fixed toothed discs 11 and movable toothed discs 12 are synchronously engaged or separated. Specifically, the tail sleeve 17 is coaxially arranged with the main shaft 3; the tail stock 2 and the tail sleeve 17 are limited in rotation by another set of fixed toothed discs 11 and movable toothed discs 12, and are synchronized with a set of fixed toothed discs 11 and movable toothed discs 12 between the fixed sleeve 1 and the rotating head 4, so that rotation limit can be generated or limit can be canceled at both ends of the main shaft 3 at the same time, so that the positioning of the main shaft 3 is smooth, the precision stability is good, and the repeat positioning accuracy is high.

[0040] As a preferred technical solution of this embodiment, rotating shafts 18 are fixedly provided at both ends of the workbench 10, and the rotating shafts 18 at both ends are rotatably connected to the rotating seat 8 and the support 9 respectively. Specifically, the rotating shafts 18 at both ends of the workbench 10 are coaxially arranged.

[0041] As the preferred technical solution of this embodiment, the driving component is a built-in motor 19 provided on the rotary seat 8, and the output end of the built-in motor 19 is connected to the rotating shaft 18. Specifically, the built-in motor 19 is controlled by a servo system to drive the rotating shaft 18 to rotate relative to the rotary seat 8, that is, the workbench 10 rotates relative to the turntable 7, so that the workbench 10 can be switched to a horizontal or vertical state, or rotated to any angle to facilitate cutting.

[0042] In actual production, a CNC machine tool combined with a tool magazine can be used to achieve continuous processing of workpieces, which is suitable for the workbench in the above embodiment that can freely adjust the angle at the cutting station. However, this type of CNC machine tool has great difficulty in software development, and the software cost and equipment cost are high. Another method uses multiple special machine tools combined with assembly line production, which can improve production efficiency, freely combine and adjust the production line, and has simple software and low cost. Under such a production form, the workbench 10 is required to reach the specified angle at one time after entering the cutting station. In this regard, the following embodiments are proposed.

[0043] In another embodiment of the present invention, the driving assembly includes a convex ring 20 coaxially arranged on the outer wall of the fixed sleeve 1, and an arc-shaped rack 21 is provided on the convex ring 20. The rotating shaft 18 rotates and passes through the rotating seat 8 and is coaxially connected to a linkage gear 22 matching the arc-shaped rack 21 at the end. Specifically, the convex ring 20 is arranged close to the turntable 7; the arc-shaped rack 21 is arranged on the upper side of the convex ring 20. When the rotating shaft 18 passes through the arc-shaped rack 21 under the rotation of the turntable 7, it rotates through the linkage gear 22 meshing with it, that is, driving the workbench 10 to rotate. Therefore, in the process of the workbench 10 rotating from the loading and unloading station to the cutting station, the linkage gear 22 and the arc-shaped rack 21 are engaged. The radian of the arc-shaped rack 21 that comes into effect corresponds to the rotation angle of the worktable 10 relative to the turntable 7; the arc-shaped rack 21 can be divided into two parts on both sides of the top of the convex ring 20, one part of which is used for engaging and transmitting with the linkage gear 22 during the process of the worktable 10 rotating from the loading and unloading station to the cutting station, and the other part is used for engaging and transmitting with the linkage gear 22 during the process of the worktable 10 rotating from the cutting station to the loading and unloading station. In this regard, the total radian of the arc-shaped rack 21 just corresponds to a 360° rotation of the turntable 7. Before and after the arc-shaped rack 21 engages and transmits with the linkage gear 22, the angle of the worktable 10 relative to the turntable 7 is in a horizontal state when it switches to the loading and unloading station.

[0044] As the preferred technical solution of this embodiment, a limit assembly is provided on the rotating shaft 18 for limiting its own rotation relative to the rotating seat 8. The limit assembly cancels the limit only during the transmission process of the arc-shaped rack 21 and the linkage gear 22. Specifically, the limit assembly restricts the rotation of the rotating shaft 18, thereby ensuring that the workbench 10 does not rotate at will.

[0045] As the preferred technical solution of this embodiment, the limit assembly includes a clamping rod 23 which is arranged on the rotating shaft 18 to move radially therethrough, a clamping groove 24 which matches the clamping rod 23 is provided on the inner wall of the rotating seat 8, a linkage block 25 which is elastically arranged in the rotating shaft 18, a sliding groove 26 is provided on the linkage block 25, a sliding pin 27 which matches the sliding groove 26 is provided on the clamping rod 23, a triggering rod 28 which moves axially through the end of the rotating shaft 18 is fixed on the linkage block 25, a magnetic plate 29 which is arranged in the same curvature range as the arc-shaped rack 21 is provided on the convex ring 20, and the triggering rod 28 is attracted and moved by the magnetic plate 29 when passing through it. Specifically, before and after the arc-shaped rack 21 is engaged with the linkage gear 22, the angle of the rotating shaft 18 relative to the rotating seat 8 just makes the clamping rod 23 correspond to the clamping groove 24; the linkage block 25 moves axially along the rotating shaft 18; A movable groove 31 is provided for the linkage block 25 to move. A spring is provided in the movable groove 31 on the side near the linkage gear 22 to resist the linkage block 25, so that the linkage block 25 is kept at the end of the movable range away from the linkage gear 22 without external force; the sliding groove 26 is inclined, and the end away from the axis of the rotating shaft 18 is closer to the linkage gear 22; when the trigger rod 28 and the magnetic plate 29 are just correspondingly adsorbed, the linkage gear 22 also begins to engage and transmit with the arc-shaped rack 21, and when the trigger rod 28 and the magnetic plate 29 are just misaligned and separated, the linkage gear 22 also ends the engagement and transmission with the arc-shaped rack 21; the surface of the magnetic plate 29 that adsorbs the trigger rod 28 is smooth, that is, after the trigger rod 28 is adsorbed on the magnetic plate 29, it does not affect the trigger rod 28 from continuing to rotate with the turntable 7; the adsorption force of the magnetic plate 29 on the trigger rod 28 is greater than the elastic force exerted on the linkage block 25. In actual use, when the main shaft 3 drives the turntable 7 to rotate and the trigger rod 28 corresponds to the magnetic plate 29, the trigger rod 28 is attracted and moved close to the magnetic plate 29, thereby driving the linkage block 25 to move toward the magnetic plate 29 against the elastic force, and then the sliding groove 26 and the sliding pin 27 move relative to each other, so that the card rod 23 contracts into the rotating shaft 18, and the card rod 23 leaves the card slot 24, and the rotating shaft 18 can resume its rotation relative to the rotating seat 8; on the contrary, when the trigger rod 28 and the magnetic plate 29 are offset, the trigger rod 28 leaves the magnetic plate 29, and the linkage block 25 elastically recovers and moves, and then the linkage card rod 23 extends again to be embedded in the card slot 24.

[0046] As a preferred technical solution of this embodiment, the rotating shaft 18 can move axially relative to the rotating seat 8 or the support 9. The convex ring 20 is also fixedly provided with an extrusion plate 32. When the trigger rod 28 passes through the extrusion plate 32, the trigger rod 28 forces the rotating shaft 18 to move reciprocatingly axially. The end of the card slot 24 away from the trigger rod 28 is provided with an extension groove 33. The extension direction of the extension groove 33 is set with a certain spiral angle around the axis of the rotating shaft 18. Specifically, the distance between the rotating seat 8 and the support 9 is greater than the length of the workbench 10. 9 is provided with a docking groove 34 that matches the rotating shaft 18, and an elastic groove 35 is provided in the docking groove 34. A top block 36 is elastically connected to the elastic groove 35 through a spring, and the top block 36 is set against the rotating shaft 18; the extrusion plate 32 is provided with an arc groove 37 that matches the trigger rod 28, and a slope 38 that wedge-matches with the trigger rod 28 is provided at intervals in the arc groove 37; when the trigger rod 28 passes through the extrusion plate 32, the trigger rod 28 acts on the slope 38 and is repeatedly pressed toward and away from the rotating seat 8. In actual use, when the turntable 7 rotates to make the workbench 10 approach the loading and unloading station, the trigger rod 28 passes through the extrusion plate 32 and interacts with the slope 38. When the trigger rod 28 approaches the rotary seat 8, the trigger rod 28 pushes the inner wall of the movable groove 31 through the linkage block 25 to push the rotating shaft 18 to move toward the tailstock 2. The spring and the top block 36 in the tailstock 2 can elastically resist the movement of the rotating shaft 18. Then, each time the trigger rod 28 passes through the slope 38, the rotating shaft 18 moves axially back under the elastic restoring force, thereby , causing the rotating shaft 18 to drive the worktable 10 to shake axially. At the same time, when the rotating shaft 18 moves axially close to the tailstock 2, the clamping rod 23 also enters the extension groove 33 and moves, and then under the spiral angle setting of the extension groove 33, the rotating shaft 18 is forced to rotate. Then, when the rotating shaft 18 moves back, the rotating shaft 18 is forced to rotate again, thereby causing the rotating shaft 18 to drive the worktable 10 to rotate and shake. In summary, the worktable 10 can shake out the chips that are difficult to fall freely in the workpiece due to grooving as much as possible under the above linked shaking.

[0047] Since the angles of the workbench 10 required in different cutting processes are different, the distribution lengths of the arc-shaped rack 21 on both sides of the apex of the convex ring 20 need to be adjustable. The following embodiments are proposed for this purpose.

[0048] In another embodiment proposed by the present invention, a ring body 30 is rotatably sleeved on the convex ring 20, and an arc-shaped rack 21 is arranged on the outer wall of the ring body 30. An adjustment component for adjusting the rotation angle of the ring body 30 is provided on the convex ring 20. Specifically, the magnetic plate 29 is fixedly arranged on the ring body 30, and the adjustment component includes an adjustment motor 39 installed on the convex ring 20, and the output end of the adjustment motor 39 is coaxially connected with an adjustment gear 40, and the inner wall of the ring body 30 is provided with an inner gear ring 41 that meshes with the adjustment gear 40; the ring body 30 carries the arc-shaped rack 21 and the magnetic plate 29 and can rotate relative to the convex ring 20, and then the rotation angle is adjusted by the adjustment component, thereby meeting the requirement of adjustable distribution length of the arc-shaped rack 21 on both sides of the vertex of the convex ring 20; further, the adjustment motor 39 is controlled by the servo system, and by driving the adjustment gear 40 to rotate, the adjustment gear 40 is meshed with the inner gear ring 41 of the ring body 30 for transmission, thereby realizing the driving of the ring body 30 and adjusting the rotation angle of the arc-shaped rack 21.

[0049] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A double-station four-axis rotary exchange workbench, comprising a fixed sleeve (1) and a tailstock (2), wherein a main shaft (3) is rotatably arranged between the fixed sleeve (1) and the tailstock (2), characterized in that: Also includes: A rotating head (4) is fixedly arranged at one end of the main shaft (3) and rotatably connected in the fixed sleeve (1); An end plate (5) is axially movable and is arranged on an end of the fixed sleeve (1) away from the tailstock (2), and is rotatably connected to the rotary head (4). An external motor (6) for driving the rotary head (4) to rotate is mounted on the end plate; The turntable (7) is coaxially fixed on the main shaft (3), and two rotating seats (8) are symmetrically arranged on the upper surface of the turntable. A support (9) is fixedly arranged on the other end of the main shaft (3). A workbench (10) is rotatably arranged between the rotating seat (8) and the support (9). A driving component for driving the workbench (10) to rotate is arranged on the rotating seat (8).

2. The double-station four-axis rotary exchange workbench according to claim 1 is characterized in that: A fixed toothed disc (11) is coaxially fixedly provided on the fixed sleeve (1), a movable toothed disc (12) is coaxially fixedly provided on the rotating head (4), and a control component for controlling the axial movement of the rotating head (4) to engage or disengage the fixed toothed disc (11) and the movable toothed disc (12) is provided on the fixed sleeve (1).

3. The double-station four-axis rotary exchange workbench according to claim 2 is characterized in that: The control component includes an oil chamber (13) arranged in a fixed sleeve (1), a piston (14) movably arranged in the oil chamber (13) is fixedly arranged on the outside of the rotating head (4), and a first oil circuit (15) and a second oil circuit (16) are arranged on the fixed sleeve (1) in a relative manner, and the first oil circuit (15) and the second oil circuit (16) are respectively connected to opposite sides of the oil chamber (13).

4. The double-station four-axis rotary exchange workbench according to claim 1 is characterized in that: A tail sleeve (17) is fixedly provided on the main shaft (3) and is rotatably connected to the tail stock (2). The tail sleeve (17) moves axially with the main shaft (3) and the rotating head (4). Another set of fixed tooth discs (11) and movable tooth discs (12) are provided between the tail stock (2) and the tail sleeve (17), and the two sets of fixed tooth discs (11) and movable tooth discs (12) are synchronously engaged or separated.

5. The double-station four-axis rotary exchange workbench according to claim 1 is characterized in that: Rotating shafts (18) are fixedly provided at both ends of the workbench (10), and the rotating shafts (18) at both ends are rotatably connected to the rotating seat (8) and the support (9) respectively.

6. The double-station four-axis rotary exchange workbench according to claim 5, characterized in that: The driving component is a built-in motor (19) provided on the rotary seat (8), and the output end of the built-in motor (19) is connected to the rotating shaft (18).

7. The double-station four-axis rotary exchange workbench according to claim 5, characterized in that: The driving assembly comprises a convex ring (20) coaxially arranged on the outer wall of the fixed sleeve (1), an arc-shaped rack (21) being arranged on the convex ring (20), a rotating shaft (18) rotating through the rotating seat (8) and coaxially connected to a linkage gear (22) matching the arc-shaped rack (21) at the end thereof.

8. The double-station four-axis rotary exchange workbench according to claim 7, characterized in that: The rotating shaft (18) is provided with a limiting assembly for limiting its own rotation relative to the rotating seat (8), and the limiting assembly cancels the limiting only during the meshing transmission process between the arc-shaped rack (21) and the linkage gear (22).

9. The double-station four-axis rotary exchange workbench according to claim 8, characterized in that: The limit assembly includes a clamping rod (23) arranged on the rotating shaft (18) and movable along its radial direction, a clamping groove (24) matching the clamping rod (23) is arranged on the inner wall of the rotating seat (8), a linkage block (25) is elastically arranged in the rotating shaft (18), a sliding groove (26) is arranged on the linkage block (25), a sliding pin (27) matching the sliding groove (26) is arranged on the clamping rod (23), a trigger rod (28) is fixedly arranged on the linkage block (25) and movable axially through the end of the rotating shaft (18), a magnetic plate (29) arranged in the same arc range as the arc rack (21) is arranged on the convex ring (20), and the trigger rod (28) is attracted and moved by the magnetic plate (29) when passing through it.

10. The double-station four-axis rotary exchange workbench according to claim 7, characterized in that: A ring body (30) is rotatably sleeved on the convex ring (20), an arc-shaped rack (21) is arranged on the outer wall of the ring body (30), and an adjustment component for adjusting the rotation angle of the ring body (30) is provided on the convex ring (20).

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