A four-axis rotary table of a workpiece processing apparatus

Abstract

The present application relates to the technical field of rotary disc, in particular to a four-axis rotary disc of workpiece machining equipment. It comprises a mounting base, a workpiece, a rotary drive mechanism, a clamping mechanism and a hinged transmission mechanism. The clamping mechanism comprises a rotatable threaded rod, a fixed sleeve and a clamping assembly. The hinged transmission mechanism comprises a hinged assembly, a multi-stage transmission assembly and an elastic buffer assembly. The threaded rod is coaxially arranged with the fixed sleeve. The threaded rod and the fixed sleeve are connected with the mounting base through the hinged assembly. The clamping assembly comprises a plurality of clamping blocks distributed in a ring along the axis of the threaded rod. The elastic buffer assembly comprises a torsion spring capable of absorbing the excess rotary driving force of the multi-stage transmission assembly. The present application can process cylindrical workpieces of different diameters. The workpiece can be automatically centered, leveled and clamped. The clamping mechanism can be deflected around the hinge point in the vertical plane, which is conducive to the rapid and accurate feeding process of the workpiece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rotary disc, in particular to a four-axis rotary disc of workpiece machining equipment. BACKGROUND

[0002] The index plate is a mechanism for realizing intermittent motion, which has the advantages of high indexing accuracy, stable operation, large torque transmission, compact structure, small size, low noise, good high-speed performance, long service life and other remarkable features, and is an ideal product for replacing traditional mechanisms such as groove wheel mechanism, ratchet mechanism, incomplete gear mechanism and pneumatic control mechanism.

[0003] In the prior art, when machining the surface of a cylindrical workpiece, a CNC machine tool is usually used, which has a large volume, and the clamp also needs to be customized according to the target workpiece, so the cost is high. The index plate has the characteristics of light weight and flexibility, but the general index plate cannot clamp the cylindrical workpiece.

[0004] Generally, the clamp for the cylindrical workpiece is fixedly connected with the rotary driving mechanism. In this state, the disassembly process of the cylindrical workpiece is relatively complicated, the centering function cannot be automatically realized during assembly, the operation is complex, the work efficiency is low, the positioning needs to be performed separately, and the clamp does not have the ability of quick disassembly and assembly. The existing clamp can only clamp the cylindrical workpiece with a specific diameter, and cannot adapt to the production and machining requirements of different products. SUMMARY

[0005] Therefore, it is necessary to provide a four-axis rotary disc of workpiece machining equipment in view of the problems in the prior art.

[0006] To solve the problems in the prior art, the technical scheme adopted by the present application is as follows:

[0007] The application provides a four-axis rotary disc of a workpiece processing device, which comprises a mounting base, a workpiece, a rotary driving mechanism, a clamping mechanism and a hinged transmission mechanism, the workpiece is sleeved on the clamping mechanism, the clamping mechanism is connected to the mounting base in a deflectable manner through the hinged transmission mechanism, the rotary driving mechanism is installed at one end of the mounting base, the rotary driving mechanism is in driving connection with the workpiece installed on the clamping mechanism, the hinged transmission mechanism is installed at the end of the mounting base away from the rotary driving mechanism, the clamping mechanism comprises a rotatable threaded rod, a fixed sleeve and a clamping assembly, the hinged transmission mechanism comprises a hinged assembly, a multi-stage transmission assembly and an elastic buffer assembly, the threaded rod is coaxially arranged with the fixed sleeve, the threaded rod and the fixed sleeve are connected to the mounting base through the hinged assembly, the multi-stage transmission assembly is installed on the hinged assembly and rotates the threaded rod when the angle between the clamping mechanism and the mounting base changes, the clamping assembly is provided with a plurality of clamping blocks which are arranged along the length direction of the threaded rod in sequence, the clamping blocks are arranged in a ring shape along the axis of the threaded rod and can displace radially along the threaded rod, the threaded rod is in driving connection with the clamping blocks when rotating, and the elastic buffer assembly is installed on the multi-stage transmission assembly and comprises a torsion spring which can absorb the excess rotary driving force of the multi-stage transmission assembly.

[0008] Preferably, the clamping assembly further comprises a threaded disc, a transmission disc, a first transmission rod and a second transmission rod, the first transmission rod and the second transmission rod are each provided with a plurality of clamping rings in one-to-one correspondence, the threaded disc is sleeved on the threaded rod, the inner wall of the threaded disc is provided with internal threads which are in threaded cooperation with the outer side wall of the threaded rod, one side of the threaded disc is provided with an annular connecting groove, the transmission disc is fixedly connected to the threaded disc through the annular connecting groove, one end of the first transmission rod can move radially along the threaded rod, one end of the first transmission rod is fixedly connected to the clamping block, the other end of the first transmission rod is hingedly connected to one end of the second transmission rod, the other end of the second transmission rod is hingedly connected to the transmission disc, and the fixed sleeve is provided with a limiting hole for sliding connection of the first transmission rod.

[0009] Preferably, the clamping mechanism further comprises a limiting plate, the limiting plate is fixedly installed at one end of the fixed sleeve close to the hinged transmission mechanism, and the threaded rod is rotatably connected to the limiting plate.

[0010] Preferably, the hinged assembly comprises a first hinged seat, a second hinged seat and a first hinged rod, the first hinged seat is connected to the mounting sleeve, the second hinged seat is connected to the mounting base, and the first hinged rod is provided with two first hinged rods which are arranged on the two sides of the first hinged seat and the second hinged seat respectively, and the first hinged rod is used for realizing the rotary connection between the first hinged seat and the second hinged seat.

[0011] Preferably, the multi-stage transmission assembly comprises a first gear, a second gear, a third gear, a fourth gear and a first rotating shaft, each of which has two, the multi-stage transmission assembly further comprises a first bevel gear, a second bevel gear and a third rotating shaft, the first gear is fixedly installed on the first articulated rod, the first articulated rod is fixedly connected with the second articulated seat, the first rotating shaft is installed on one side of the first articulated seat and the second articulated seat, the second rotating shaft is rotatably installed on both sides of the first articulated seat, the second gear is in transmission connection with the end of the first rotating shaft, the first gear and the second gear are in meshing, the third gear is in transmission connection with the end of the first rotating shaft away from the second gear, the second rotating shaft is located between the first rotating shaft and the first articulated rod, the fourth gear is fixedly installed on the end of the second rotating shaft, the third gear and the fourth gear are in meshing, the third rotating shaft is coaxially arranged with the threaded rod, one end of the third rotating shaft is fixedly connected with the threaded rod, the third rotating shaft is rotatably arranged on the first articulated seat, the other end of the third rotating shaft is fixedly connected with the second bevel gear, the first bevel gear is fixedly installed on the second rotating shaft, the first bevel gear is in meshing with the second bevel gear, and the torsional spring is sleeved on the first rotating shaft.

[0012] Preferably, the tooth number ratio of the first gear to the second gear is greater than one, and the tooth number ratio of the third gear to the fourth gear is greater than one.

[0013] Preferably, the elastic buffer assembly further comprises a connecting plate and a sliding plate, the first rotating shaft comprises a first connecting rod and a second connecting rod, both ends of the connecting plate are rotatably connected with the first articulated rod and the end of the first rotating shaft, one end of the first connecting rod is rotatably connected with the connecting plate, one end of the second connecting rod is rotatably connected with the side wall of the first articulated seat, the first connecting rod and the second connecting rod are coaxially arranged, one end of the second connecting rod close to the first connecting rod is provided with a hollow groove for the first connecting rod to slide, the sliding plate is slidably installed on the second connecting rod, the outer side wall of the second connecting rod is provided with a horizontal sliding groove for the sliding plate to slide horizontally, one end of the torsional spring is fixedly connected with the connecting plate, and the other end of the torsional spring is fixedly connected with the sliding plate.

[0014] Preferably, the mounting sleeve is provided with a mounting disc on the side away from the articulated transmission mechanism, the rotary driving mechanism is provided with a rotatable locking rotary disc, the middle part of the locking rotary disc is provided with an elastic locking rod capable of horizontally extending and retracting, and the end of the mounting disc close to the locking rotary disc is provided with a locking groove for the end of the elastic locking rod to be connected.

[0015] Preferably, the small-diameter cylinder clamping mechanism comprises a small-diameter cylinder mounting column, a clamp transmission rod and a clamping plate, the small-diameter cylinder mounting column is fixedly installed on the side wall of the fixed sleeve, the clamp transmission rod and the clamping plate are both provided with a plurality of ones and are uniformly distributed along the axial direction of the fixed sleeve, the clamping plate is fixedly installed on the clamp transmission rod, the small-diameter cylinder mounting column is provided with a plurality of ones, one small-diameter cylinder mounting column is arranged between every two clamp transmission rods, and the clamp transmission rod is realized to be retractable through an oil cylinder.

[0016] The beneficial effects of the present application compared to the prior art are:

[0017] 1. In the rotary disc shown in the present application, different diameter length cylindrical workpieces can be processed, the workpiece can be automatically centered, leveled and clamped, and the clamping mechanism can be hinged to the mounting base through the hinge transmission mechanism, that is, the clamping mechanism can be deflected around the hinge point in the vertical plane, which is beneficial to the rapid and accurate feeding process of the workpiece.

[0018] 2. The present application can adapt to different diameter length workpieces. When the clamping mechanism is deflected downward, the clamping block in the clamping assembly has clamped the inner wall of the workpiece, and the clamping mechanism continues to deflect downward. At this time, the excess kinetic energy in the multi-stage transmission assembly is absorbed by the torsional spring in the elastic buffer assembly, ensuring that the clamping mechanism and the workpiece clamped thereby can be accurately displaced to the horizontal state. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of a four-axis rotary disc of a workpiece machining equipment;

[0020] Figure 2 is a top view of a four-axis rotary disc of a workpiece machining equipment;

[0021] Figure 3 is a sectional view of a four-axis rotary disc of a workpiece machining equipment;

[0022] Figure 4 is a perspective sectional view of a four-axis rotary disc of a workpiece machining equipment;

[0023] Figure 5 is a side view of a four-axis rotary disc of a workpiece machining equipment;

[0024] Figure 6 is a perspective view of a hinge transmission mechanism in a four-axis rotary disc of a workpiece machining equipment;

[0025] Figure 7 is a top view of a hinge transmission mechanism in a four-axis rotary disc of a workpiece machining equipment;

[0026] Figure 8 is a perspective view of an elastic buffer assembly in a four-axis rotary disc of a workpiece machining equipment;

[0027] Figure 9 is a perspective view of a second connecting rod in a four-axis rotary disc of a workpiece machining equipment;

[0028] Figure 10 is a perspective view of a clamping mechanism in a four-axis rotary disc of a workpiece machining equipment;

[0029] Figure 11 This is a three-dimensional structural diagram of a clamping assembly in a four-axis rotary table of a workpiece processing equipment;

[0030] Figure 12 A schematic diagram of a partial three-dimensional structure of a four-axis rotary disk in a workpiece processing equipment. Figure 1 ;

[0031] Figure 13 A schematic diagram of a partial three-dimensional structure of a four-axis rotary disk in a workpiece processing equipment. Figure 2 ;

[0032] Figure 14 This is a three-dimensional structural diagram of a small-diameter clamping mechanism in a four-axis rotary disk of a workpiece processing equipment.

[0033] The numbers on the map are:

[0034] 1. Mounting base; 2. Workpiece; 3. Rotary drive mechanism; 4. Clamping mechanism; 5. Hinge transmission mechanism; 6. Threaded rod; 7. Fixing sleeve; 8. Hinge assembly; 9. Multi-stage transmission assembly; 10. Elastic buffer assembly; 11. Clamping block; 12. Torsion spring; 13. Threaded disc; 14. Transmission disc; 15. First transmission rod; 16. Second transmission rod; 17. Annular connecting groove; 18. Limiting hole; 19. Limiting plate; 20. First hinge seat; 21. Second hinge seat; 22. First hinge rod; 23. ... 24. Gear 1; 25. Gear 26. Gear 4; 27. First rotating shaft; 28. First helical gear; 29. ​​Second helical gear; 30. Third rotating shaft; 31. Connecting plate; 32. Sliding plate; 33. First connecting rod; 34. Second connecting rod; 35. Hollow groove; 36. Horizontal sliding groove; 37. Mounting plate; 38. Locking rotating plate; 39. Elastic locking rod; 40. Locking groove; 41. Second rotating shaft; 42. Small-diameter mounting column; 43. Clamp transmission rod; 44. Clamping plate. Implementation

[0035] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1-14The four-axis rotating disc of a workpiece processing device shown comprises a mounting base 1, a workpiece 2, a rotating drive mechanism 3, a clamping mechanism 4 and a hinged transmission mechanism 5, the workpiece 2 is sleeved on the clamping mechanism 4, the clamping mechanism 4 is connected with the mounting base 1 in a deflectable manner through the hinged transmission mechanism 5, the rotating drive mechanism 3 is installed at one end of the mounting base 1, the rotating drive mechanism 3 is in driving connection with the workpiece 2 installed on the clamping mechanism 4, the hinged transmission mechanism 5 is installed at the end of the mounting base 1 away from the rotating drive mechanism 3, the clamping mechanism 4 comprises a rotatable threaded rod 6, a fixed sleeve 7 and a clamping assembly, the hinged transmission mechanism 5 comprises a hinged assembly 8, a multi-stage transmission assembly 9 and an elastic buffer assembly 10, the threaded rod 6 is coaxially arranged with the fixed sleeve 7, the threaded rod 6 and the fixed sleeve 7 are connected with the mounting base 1 through the hinged assembly 8, the multi-stage transmission assembly 9 is installed on the hinged assembly 8 and rotates the threaded rod 6 when the angle between the clamping mechanism 4 and the mounting base 1 changes, the clamping assembly is provided with a plurality of clamping blocks 11 arranged along the length direction of the threaded rod 6 in sequence, the clamping assembly comprises a plurality of clamping blocks 11 arranged in a ring shape along the axis of the threaded rod 6, the clamping blocks 11 can be radially displaced along the threaded rod 6, the threaded rod 6 is in driving connection with the clamping blocks 11 when rotating, the elastic buffer assembly 10 is installed on the multi-stage transmission assembly 9, and the elastic buffer assembly 10 comprises a torsional spring 12 capable of absorbing the excess rotating driving force of the multi-stage transmission assembly 9.

[0037] In the rotating disc shown in the application, different diameter workpieces 2 can be processed, the workpieces 2 can be automatically centered, leveled and clamped, the clamping mechanism 4 can be hingedly connected with the mounting base 1 through the hinged transmission mechanism 5, that is, the clamping mechanism 4 can be deflected around the hinge point in the vertical plane, which is beneficial to the rapid and accurate feeding process of the workpieces 2, when the clamping mechanism 4 is deflected upward, the multi-stage transmission assembly 9 drives the threaded rod 6 in driving connection therewith to rotate forward, so that the clamping blocks 11 in driving connection with the threaded rod 6 shrink towards the fixed sleeve 7, which facilitates the installation of the workpieces 2, when the workpieces 2 are installed, the clamping mechanism 4 is deflected downward, the multi-stage transmission assembly 9 drives the threaded rod 6 in driving connection therewith to rotate reversely, the threaded rod 6 rotates to drive the clamping assembly to work, the clamping assembly drives the plurality of clamping blocks 11 to expand, so that the clamping blocks 11 can abut against the inner side wall of the workpiece 2, that is, in the process of deflection downward, the clamping blocks 11 gradually clamp the workpiece 2, so that the workpiece 2 and the mounting sleeve are in a coaxial state, the clamping function of the workpiece 2 is realized, and the clamping mechanism 4 is in driving connection with the rotating drive mechanism 3 located at one end of the mounting base 1 when the clamping mechanism 4 is in a horizontal state.

[0038] The present application can adapt to different diameter length workpieces 2, when the clamping blocks 11 in the clamping assembly have clamped the inner wall of the workpiece 2 during the downward deflection of the clamping mechanism 4, the clamping mechanism 4 continues to deflect downward, at this time the excess kinetic energy in the multi-stage transmission assembly 9 is absorbed by the torsional spring 12 in the elastic buffer assembly 10, which ensures that the clamping mechanism 4 and the clamped workpiece 2 can be accurately displaced to the horizontal state.

[0039] The clamping assembly further comprises a threaded disc 13, a transmission disc 14, a first transmission rod 15 and a second transmission rod 16, the first transmission rod 15 and the second transmission rod 16 are each provided with a plurality of and correspond to a plurality of clamping rings, the threaded disc 13 is sleeved on the threaded rod 6, the inner wall of the threaded disc 13 is provided with internal threads which are threadedly connected with the outer side wall of the threaded rod 6, one side of the threaded disc 13 is provided with an annular connecting groove 17, the transmission disc 14 is fixedly connected with the threaded disc 13 through the annular connecting groove 17, one end of the first transmission rod 15 can move radially along the threaded rod 6, one end of the first transmission rod 15 is fixedly connected with the clamping block 11, the other end of the first transmission rod 15 is hingedly connected with one end of the second transmission rod 16, the other end of the second transmission rod 16 is hingedly connected with the transmission disc 14, the fixed sleeve 7 is provided with a limiting hole 18 for sliding connection of the first transmission rod 15.

[0040] When the clamping assembly works, the threaded rod 6 is rotated to drive the threaded disc 13 which is threadedly connected with the threaded rod 6 to displace relative to the threaded rod 6, the threaded disc 13 drives the transmission disc 14 which is fixedly connected with the threaded disc 13 to displace synchronously, the transmission disc 14 drives the second transmission rod 16 to move, and then drives the first transmission rod 15 which is hingedly connected with the second transmission rod 16 to displace, the limiting hole 18 on the fixed sleeve 7 is used to ensure that the first transmission rod 15 can only slide along the radial direction of the threaded rod 6, the first transmission rod 15 drives the clamping block 11 which is fixedly installed on the end of the first transmission rod 15 to displace synchronously when the first transmission rod 15 moves, and then the clamping function of the clamping block 11 to the workpiece 2 is realized.

[0041] The clamping mechanism 4 further comprises a limiting plate 19, the limiting plate 19 is fixedly installed on one end of the fixed sleeve 7 close to the hinged transmission mechanism 5, and the threaded rod 6 is rotatably connected with the limiting plate 19.

[0042] The limiting plate 19 can limit the position of the workpiece 2 when the workpiece 2 is installed, when the workpiece 2 is installed into the installation sleeve, since the installation sleeve is in an inclined state, one end of the workpiece 2 will slide to abut against the limiting plate 19, the workpiece 2 always abuts against the limiting plate 19 when the clamping assembly gradually clamps the workpiece 2, until the workpiece 2 is clamped, and when the workpiece 2 is in a horizontal state, it can still be ensured that the workpiece 2 abuts against the limiting plate 19, that is, the positioning function of the workpiece 2 is realized.

[0043] The hinged assembly 8 comprises a first hinged seat 20, a second hinged seat 21 and a first hinged rod 22, the first hinged seat 20 is connected with the mounting sleeve, the second hinged seat 21 is connected with the mounting base 1, and the first hinged rod 22 is provided with two first hinged rods 22 arranged on the two sides of the first hinged seat 20 and the second hinged seat 21 respectively, and the first hinged rod 22 is used to realize the rotary connection between the first hinged seat 20 and the second hinged seat 21.

[0044] When the hinged assembly 8 works, the clamping mechanism 4 can realize the hinged function with the mounting base 1 through the hinged assembly 8, so that the clamping mechanism 4 has the function of relative deflection in the vertical plane, which facilitates the placement and taking out of the workpiece 2, improves the work efficiency of feeding and discharging, and can realize the driving function of the clamping mechanism 4 through the multi-stage transmission assembly 9 when deflection, realizes the clamping or loosening operation of the workpiece 2 at the same time, and further improves the work efficiency.

[0045] The multi-stage transmission assembly 9 comprises a first gear 23, a second gear 24, a third gear 25, a fourth gear 26 and a first rotating shaft 27, all provided with two, the multi-stage transmission assembly 9 further comprises a first bevel gear 28, a second bevel gear 29 and a third rotating shaft 30, the first gear 23 is fixedly installed on the first hinged rod 22, the first hinged rod 22 is fixedly connected with the second hinged seat 21, the first rotating shaft 27 is installed on one side of the first hinged seat 20 and the second hinged seat 21, the two ends of the second rotating shaft 41 are rotatably installed on the two sides of the first hinged seat 20, the second gear 24 is in transmission connection with the end of the first rotating shaft 27, the first gear 23 and the second gear 24 are engaged, the third gear 25 is in transmission connection with the end of the first rotating shaft 27 away from the second gear 24, the second rotating shaft 41 is located between the first rotating shaft 27 and the first hinged rod 22, the fourth gear 26 is fixedly installed on the end of the second rotating shaft 41, the third gear 25 and the fourth gear 26 are engaged, the third rotating shaft 30 is coaxially arranged with the threaded rod 6, one end of the third rotating shaft 30 is fixedly connected with the threaded rod 6, the third rotating shaft 30 is rotatably arranged on the first hinged seat 20, the other end of the third rotating shaft 30 is fixedly connected with the second bevel gear 29, the first bevel gear 28 is fixedly installed on the second rotating shaft 41, the first bevel gear 28 is engaged with the second bevel gear 29, and the torsional spring 12 is sleeved on the first rotating shaft 27.

[0046] When the multi-stage transmission assembly 9 is working, since the first hinge rod 22 is fixedly connected to the second hinge seat 21, that is, the first gear 23, which is fixedly connected to the first hinge rod 22, is fixedly connected to the second hinge seat 21, when the first hinge seat 20 rotates relative to the second hinge seat 21, the first gear 23 remains fixed, and the second gear 24 rotates around the first gear 23. The second gear 24 drives the first rotating shaft 27, which is connected to it, to rotate. The first rotating shaft 27 drives the third gear 25 at the other end to rotate synchronously. The third gear 25 drives the fourth gear 26, which meshes with it, to rotate, thereby driving the second rotating shaft 41 to rotate on the first hinge seat 20. When the second rotating shaft 41 rotates, it drives the first helical gear 28, which is fixedly connected to it, to rotate, and then drives the second helical gear 29, which meshes with it, to rotate. The second helical gear 29 drives the third rotating shaft 30 to rotate synchronously, thereby realizing the function of driving the rotation of the threaded rod 6, which is fixedly connected to the end of the third rotating shaft 30.

[0047] The ratio of the number of teeth of the first gear 23 to the number of teeth of the second gear 24 is greater than one, and the ratio of the number of teeth of the third gear 25 to the number of teeth of the fourth gear 26 is greater than one.

[0048] It achieves dual speed change function, increases the number of rotations of threaded rod 6, and facilitates the driving function of clamping mechanism 4.

[0049] The elastic buffer assembly 10 also includes a connecting plate 31 and a sliding plate 32. The first rotating shaft 27 includes a first connecting rod 33 and a second connecting rod 34. The two ends of the connecting plate 31 are rotatably connected to the ends of the first hinge rod 22 and the first rotating shaft 27, respectively. One end of the first connecting rod 33 is rotatably connected to the connecting plate 31. One end of the second connecting rod 34 is rotatably connected to the side wall of the first hinge seat 20. The first connecting rod 33 and the second connecting rod 34 are coaxially arranged. The end of the second connecting rod 34 near the first connecting rod 33 is provided with a hollow groove 35 for the first connecting rod 33 to slide. The sliding plate 32 is slidably mounted on the second connecting rod 34. The outer side wall of the second connecting rod 34 is provided with a horizontal groove 36 for the sliding plate 32 to slide horizontally. One end of the torsion spring 12 is fixedly connected to the connecting plate 31, and the other end of the torsion spring 12 is fixedly connected to the sliding plate 32.

[0050] When the clamping mechanism 4 has not yet been deflected downward to the horizontal state and the workpiece 2 provided on the mounting sleeve has been fixed by the clamping block 11, at this time the clamping mechanism 4 continues to deflect downward, and the excess kinetic energy is absorbed by the elastic buffer assembly 10, so that the clamping block 11 can move to the horizontal state without continuing to expand outward. The first rotating shaft 27 is provided as the first connecting rod 33 and the second connecting rod 34, and the first connecting rod 33 is not directly connected with the second connecting rod 34, but is connected through the torsional spring 12 mounted thereon. When the clamping block 11 is not clamped, the first connecting rod 33 can drive the second connecting rod 34 to rotate synchronously through the torsional spring 12 when rotating, so as to realize the driving function. When the clamping block is clamped, the second connecting rod 34 cannot continue to rotate, while the first connecting rod 33 continues to rotate, and the torsional spring 12 rotates to absorb the excess kinetic energy. The sliding plate 32 connected with the torsional spring 12 can slide on the second connecting rod 34 under the limitation of the horizontal sliding groove 36, so as to realize the buffering and energy absorption of the torsional spring 12.

[0051] The mounting sleeve away from the hinged transmission mechanism 5 is provided with a mounting disc 37, and the rotary driving mechanism 3 is provided with a rotatable locking rotary disc 38. The middle part of the locking rotary disc 38 is provided with an elastic locking rod 39 capable of horizontally extending and retracting. The end of the mounting disc 37 close to the locking rotary disc 38 is provided with a locking groove 40 for connecting the end of the elastic locking rod 39.

[0052] When the clamping mechanism 4 is in the horizontal state, the elastic locking rod 39 is pushed out to the side of the mounting disc 37 by the elastic force, and the end of the elastic locking rod 39 is clamped into the locking groove 40 of the mounting disc 37. The mounting disc 37 is rotated to drive the locking rotary disc 38 to rotate synchronously through the locking rotary disc 38. The elastic locking rod 39 is used to ensure that the locking rotary disc 38 and the mounting disc 37 are in the coaxial position.

[0053] It also includes a small-diameter clamping mechanism, which includes a small-diameter mounting column 42, a clamp transmission rod 43 and a clamping plate 44. The small-diameter mounting column 42 is fixedly installed on the side wall of the fixed sleeve 7. The clamp transmission rod 43 and the clamping plate 44 are both provided with a plurality of and are uniformly distributed along the axial direction of the fixed sleeve 7. The clamping plate 44 is fixedly installed on the clamp transmission rod 43. The small-diameter mounting column 42 is provided with a plurality of, and one small-diameter mounting column 42 is arranged between every two clamp transmission rods 43. The clamp transmission rod 43 is telescopic through the oil cylinder.

[0054] When the inner diameter of the workpiece 2 to be machined is small, the workpiece 2 is installed on the 42, and the telescopic clamping transmission rod 43 is controlled by the oil cylinder. The clamping transmission rod 43 drives the clamping plate 44 to displace towards the side close to the fixed sleeve 7. Two adjacent clamping plates 44 clamp the workpiece 2 on the small-diameter mounting column 42 between them. This way can make the equipment synchronize machining the workpiece 2 with multiple small-diameter tubes, and improve the use range of the equipment.

[0055] The above embodiments only express one or several embodiments of the present application, which are described in more detail and in more detail, but cannot be understood as limiting the scope of the patent of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

Claims

1. A four-axis rotary table of a workpiece processing apparatus, characterized by, The device includes a mounting base (1), a workpiece (2), a rotary drive mechanism (3), a clamping mechanism (4), and a hinge transmission mechanism (5). The workpiece (2) is fitted onto the clamping mechanism (4). The clamping mechanism (4) is connected to the mounting base (1) via the hinge transmission mechanism (5) and can be deflected. The rotary drive mechanism (3) is mounted on one end of the mounting base (1) and can be driven to the workpiece (2) mounted on the clamping mechanism (4). The hinge transmission mechanism (5) is mounted on the end of the mounting base (1) away from the rotary drive mechanism (3). The clamping mechanism (4) includes a rotatable threaded rod (6), a fixed sleeve (7), and a clamping assembly. The hinge transmission mechanism (5) includes a hinge assembly (8), a multi-stage transmission assembly (9), and an elastic buffer assembly (10). The threaded rod (6) and the fixed sleeve (7) are connected to the workpiece (2) mounted on the clamping mechanism (4). The threaded rod (6) and the fixed sleeve (7) are coaxially arranged and connected to the mounting base (1) through the hinge assembly (8). The multi-stage transmission assembly (9) is installed on the hinge assembly (8) and drives the threaded rod (6) to rotate when the angle between the clamping mechanism (4) and the mounting base (1) changes. There are several clamping assemblies, which are arranged sequentially along the length of the threaded rod (6). Each clamping assembly includes several clamping blocks (11) that are distributed in a ring along the axis of the threaded rod (6). The clamping blocks (11) can be radially displaced along the threaded rod (6). The threaded rod (6) is connected to the clamping blocks (11) during rotation. The elastic buffer assembly (10) is installed on the multi-stage transmission assembly (9). The elastic buffer assembly (10) includes a torsion spring (12) that can absorb the excess rotational driving force of the multi-stage transmission assembly (9). The hinge assembly (8) includes a first hinge seat (20), a second hinge seat (21), and a first hinge rod (22). The first hinge seat (20) is connected to the mounting sleeve, and the second hinge seat (21) is connected to the mounting base (1). There are two first hinge rods (22), which are respectively located on both sides of the first hinge seat (20) and the second hinge seat (21). The first hinge rods (22) are used to realize the rotational connection between the first hinge seat (20) and the second hinge seat (21). The multi-stage transmission assembly (9) includes two of each of the following: a first gear (23), a second gear (24), a third gear (25), a fourth gear (26), and a first rotating shaft (27). The multi-stage transmission assembly (9) also includes a first helical gear (28), a second helical gear (29), and a third rotating shaft (30). The first gear (23) is fixedly mounted on the first hinge rod (22), which is fixedly connected to the second hinge seat (21). The first rotating shaft (27) is mounted on one side of the first hinge seat (20) and the second hinge seat (21). The two ends of the second rotating shaft (41) are rotatably mounted on both sides of the first hinge seat (20). The second gear (24) is connected to the end of the first rotating shaft (27). The first gear (23) and the second gear (24) mesh, and the third gear... The wheel (25) is connected to the end of the first shaft (27) away from the second gear (24). The second shaft (41) is located between the first shaft (27) and the first hinge rod (22). The fourth gear (26) is fixedly installed at the end of the second shaft (41). The third gear (25) and the fourth gear (26) mesh. The third shaft (30) is coaxially arranged with the threaded rod (6). One end of the third shaft (30) is fixedly connected to the threaded rod (6). The third shaft (30) is rotatably arranged on the first hinge seat (20). The other end of the third shaft (30) is fixedly connected to the second helical gear (29). The first helical gear (28) is fixedly installed on the second shaft (41). The first helical gear (28) meshes with the second helical gear (29). The torsion spring (12) is sleeved on the first shaft (27).

2. The four-axis rotary table of claim 1, wherein, The clamping assembly also includes a threaded disc (13), a transmission disc (14), a first transmission rod (15), and a second transmission rod (16). The first transmission rod (15) and the second transmission rod (16) each have several clamping rings, each corresponding to one of the clamping rings. The threaded disc (13) is fitted onto the threaded rod (6). The inner wall of the threaded disc (13) has an internal thread that engages with the outer wall thread of the threaded rod (6). One side of the threaded disc (13) has an annular connecting groove (17). The transmission disc (14)... The first transmission rod (15) is fixedly connected to the threaded disc (13) via the annular connecting groove (17). One end of the first transmission rod (15) can move radially along the threaded rod (6). One end of the first transmission rod (15) is fixedly connected to the clamping block (11). The other end of the first transmission rod (15) is hinged to one end of the second transmission rod (16). The other end of the second transmission rod (16) is hinged to the transmission disc (14). The fixed sleeve (7) is provided with a limiting hole (18) for the first transmission rod (15) to slide.

3. The four-axis rotary table of claim 1, wherein, The clamping mechanism (4) also includes a limiting plate (19), which is fixedly installed on one end of the fixed sleeve (7) near the hinge transmission mechanism (5), and the threaded rod (6) is rotatably connected to the limiting plate (19).

4. The four-axis rotary disk of a workpiece processing equipment according to claim 1, characterized in that, The ratio of the number of teeth of the first gear (23) to the number of teeth of the second gear (24) is greater than one, and the ratio of the number of teeth of the third gear (25) to the number of teeth of the fourth gear (26) is greater than one.

5. The four-axis rotary disk of a workpiece processing equipment according to claim 4, characterized in that, The elastic buffer assembly (10) also includes a connecting plate (31) and a sliding plate (32). The first rotating shaft (27) includes a first connecting rod (33) and a second connecting rod (34). The two ends of the connecting plate (31) are rotatably connected to the ends of the first hinge rod (22) and the first rotating shaft (27), respectively. One end of the first connecting rod (33) is rotatably connected to the connecting plate (31). One end of the second connecting rod (34) is rotatably connected to the side wall of the first hinge seat (20). The first connecting rod (33) and the first connecting rod (24) are rotatably connected to the side wall of the first hinge seat (20). The second connecting rod (34) is coaxially arranged. The end of the second connecting rod (34) near the first connecting rod (33) is provided with a hollow groove (35) for the first connecting rod (33) to slide. The sliding plate (32) is slidably installed on the second connecting rod (34). The outer wall of the second connecting rod (34) is provided with a horizontal groove (36) for the sliding plate (32) to slide horizontally. One end of the torsion spring (12) is fixedly connected to the connecting plate (31), and the other end of the torsion spring (12) is fixedly connected to the sliding plate (32).

6. The four-axis rotary disk of a workpiece processing equipment according to claim 5, characterized in that, The mounting sleeve is provided with a mounting plate (37) on the side away from the hinge transmission mechanism (5). The rotary drive mechanism (3) is provided with a rotatable locking rotating plate (38). The middle part of the locking rotating plate (38) is provided with a horizontally extendable elastic locking rod (39). The mounting plate (37) is provided with a locking groove (40) for the end of the elastic locking rod (39) to be connected to the locking rotating plate (38).

7. The four-axis rotary disk of a workpiece processing equipment according to claim 1, characterized in that, It also includes a small-diameter clamping mechanism, which includes a small-diameter mounting column (42), a clamping transmission rod (43), and a clamping plate (44). The small-diameter mounting column (42) is fixedly mounted on the side wall of the fixed sleeve (7). The clamping transmission rod (43) and the clamping plate (44) are provided in several units and are evenly distributed along the axial direction of the fixed sleeve (7). The clamping plate (44) is fixedly mounted on the clamping transmission rod (43). There are several small-diameter mounting columns (42), and a small-diameter mounting column (42) is provided between every two clamping transmission rods (43). The clamping transmission rod (43) is extended and retracted by a hydraulic cylinder.

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