Rotary pressing machining clamp

Abstract

The utility model discloses a rotary pressing machining clamp which comprises a positioning device for positioning a machined part, and the positioning device enables the machined part to rotate in the circumferential direction. The pressing mechanism is used for pressing the machined part, and the pressing mechanism and the positioning device are symmetrically arranged on the two sides of the machined part; the pressing mechanism comprises a driving device, the driving device is connected with a fixing device, the interior of the fixing device is rotationally connected with a rotating device, one end of the rotating device is fixedly connected with the driving end of the driving device, and the other end of the rotating device abuts against a machined part. And the driving end of the driving device drives the rotating device to linearly move so as to compress or loosen the machined part. According to the machining clamp, 360-degree rotation can be synchronously achieved in the positioning and pressing process of a machined part, so that holes, machining angles and the like in different directions of the machined part can be machined without frequently disassembling the clamp in the machining process, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to a processing fixture, in particular to a rotary pressing processing fixture. Background Art

[0002] The automobile air conditioning compressor is the heart of the automobile air conditioning refrigeration system, which plays the role of compressing and transporting refrigerant vapor. It is composed of a shell, a cylinder, front and rear covers, a valve plate, etc. Each of the above components is provided with various air inlet holes, exhaust holes, and oil inlet and outlet ports, so it needs to be positioned and fixed during processing.

[0003] For example, the cylinder body is an important component in the automobile air-conditioning compressor. Due to the great difference in the appearance of different cylinder bodies, the internal processing dimensions are also very different. In particular, there are many inclined holes inside the cylinder body and the installation angles on the outside, which need to be processed in advance. For example, there are many bolt holes, positioning pin holes, vent holes, crescent grooves and other special holes on the cylinder body valve plate surface that need to be positioned. At present, the traditional processing technology is to position the center hole of the cylinder body and a positioning tool, and then press the top of the cylinder body. Therefore, the workpiece is fixed on the positioning tool, and it cannot be rotated. When processing the holes on each direction, it is necessary to disassemble the positioning tool, rotate the angle, and then reinstall it, which has low processing efficiency. And after multiple operations, it is easy to cause processing errors, which will eventually seriously affect the overall quality of the automobile air-conditioning compressor. Summary of the invention

[0004] In order to solve the problems existing in the above-mentioned existing technologies, the purpose of the utility model is to provide a processing fixture for processing the installation angle of a compressor cylinder body, which has a reasonable structure, is easy to use and can improve production efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A rotary clamping processing fixture comprises a positioning device for positioning a workpiece, the positioning device causes the workpiece to rotate circumferentially; it also comprises a clamping mechanism for clamping the workpiece, the clamping mechanism and the positioning device are symmetrically arranged on both sides of the workpiece; the clamping mechanism comprises a driving device, the driving device is connected to a fixing device, the internal rotation of the fixing device is connected to a rotating device, one end of the rotating device is fixedly connected to the driving end of the driving device, and the other end abuts against the workpiece; the driving end of the driving device drives the rotating device to move linearly to clamp or loosen the workpiece.

[0007] In a further solution, the fixing device includes a fixing seat fixedly connected to the base of the driving device, a through hole is opened inside the fixing seat, and the rotating device is movably embedded in one end of the through hole and can perform circumferential rotational movement along the through hole.

[0008] In a further solution, the fixing base is fixed on the bottom plate.

[0009] According to a further solution, the rotating device includes a pressing head abutting against the workpiece and a sleeve movably embedded in the fixing device, wherein the sleeve is fixedly connected to the driving end of the driving device, and the driving device drives the sleeve to perform linear motion inside the fixing device after operation; one end of the pressing head is fixedly connected to a rotating rod, and the rotating rod is rotatably arranged inside the sleeve.

[0010] In a further solution, a bearing group is fixedly provided between the rotating rod and the sleeve, so that the rotating rod rotates inside the sleeve; the bearing group includes a thrust bearing and a deep groove bearing.

[0011] In a preferred embodiment, a boss is fixedly provided on the outer periphery of the inner end of the rotating rod, a thrust bearing is sleeved on the rotating rod located inside the boss, a baffle is fixedly provided at the end of the rotating rod, and the axial direction of the thrust bearing is limited by the boss and the baffle respectively;

[0012] A first deep groove bearing is sleeved on the rotating rod located outside the boss, and a first retaining spring is fixed on the rotating rod located outside the first deep groove bearing; the axial direction of the first deep groove bearing is limited by the boss and the first retaining spring respectively.

[0013] More preferably, the outer end of the rotating rod is sleeved with a second deep groove bearing, and the rotating rod and the sleeve at the axial ends of the second deep groove bearing are respectively fixed with a second retaining spring and a third retaining spring for limiting the axial position of the second deep groove bearing.

[0014] In a further solution, the driving end of the driving device is connected to the sleeve through an adapter; the driving device is a pneumatic cylinder or an oil cylinder.

[0015] According to a further solution, the positioning device includes a connecting disk, one side of which is movably connected to a positioning disk via a pin shaft, and the positioning disk can rotate freely on the connecting disk; a support column and a support block for coordinating positioning and supporting the workpiece are fixedly provided on the outer end surface of the positioning disk; and a center column is fixedly provided at the center of the positioning disk.

[0016] In a further solution, a positioning core shaft is fixedly provided at the center of the other side of the connecting disk; and the center column is assembled with the center hole of the processed part through the center connecting column.

[0017] The positioning disk in the utility model can be rotated 360 degrees on the connecting disk, so that after the workpiece to be processed is assembled with the positioning disk, the positioning disk is rotated relative to the adapter disk, and the workpiece is rotated according to the processing positions such as straight holes, inclined holes, and processing angles on the workpiece. Then, the workpiece is pressed and positioned using a clamping device, and processing can be conveniently performed. During the clamping process, the workpiece or the positioning disk can also be rotated so that the workpiece, the rotating device, and the positioning disk can be rotated 360 degrees together. Therefore, the processing fixture of the utility model can also synchronously realize 360° rotation during the positioning and clamping process of the workpiece, so that holes and processing angles in different directions of the workpiece can be processed without frequent disassembly of the fixture during the processing, which greatly improves work efficiency.

[0018] The size and shape of the pressure head in the utility model can be selected according to the structure of the workpiece, and it can be assembled by bolts and sleeves, which is convenient and quick. In addition, the pressure head is made of PEEK material, which is light in weight, high in hardness, and good in wear resistance. It will not cause pressure damage to the surface of the workpiece when it abuts against the surface of the workpiece, and it generates a relatively large friction force to avoid deviation.

[0019] The positioning device in the utility model is designed to be compatible with the workpiece, which includes the cylinder body, front and rear cover plates, and valve plates in the automobile air-conditioning compressor. The various holes and processing angles on the workpieces are processed after positioning them using the processing fixture of the application. Therefore, the processing fixture in the application has strong adaptability and can be adapted to all products that require side processing for positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the assembly diagram of this application.

[0021] Figure 2 This is a schematic diagram of the connection between the driving device and the rotating device in this application.

[0022] Figure 3 is a schematic diagram of the structure of the rotating device in this application,

[0023] Figure 4 is a schematic diagram of the structure of the positioning device in this application,

[0024] In the figure: 1-driving device, 11-connecting head;

[0025] 2-fixing device, 21-bottom plate, 22-fixing bolt, 23-fixing seat;

[0026] 3-rotating device, 31-sleeve, 32-thrust bearing, 33-deep groove bearing, 331-first deep groove bearing, 332-second deep groove bearing, 34-pressing head, 35-rotating rod, 351-boss, 36-locking bolt, 37-blocking plate, 381-first retaining spring, 382-second retaining spring, 383-third retaining spring;

[0027] 4- Processing parts,

[0028] 5-positioning device, 51-connecting plate, 52-positioning plate, 53-support column, 54-center column, 55-support block;

[0029] 6-positioning mandrel, 7-center connecting column. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-4 The present application provides a rotary clamping processing fixture, including a positioning device 5 for positioning a workpiece 4, the positioning device 5 causes the workpiece 4 to rotate circumferentially; the positioning device 5 is passed through the workpiece 4 and also includes a clamping mechanism for clamping the workpiece 4, the clamping mechanism and the positioning device 5 are symmetrically arranged on both sides of the workpiece 4; the clamping mechanism includes a driving device 1, the driving device 1 is connected to a fixing device 2, the internal rotation of the fixing device 2 is connected to a rotating device 3, one end of the rotating device 3 is fixedly connected to the driving end of the driving device 1, and the other end is in contact with the workpiece 4; the driving end of the driving device 1 drives the rotating device 3 to move linearly to clamp or release the workpiece 4.

[0032] The positioning device 5 in the present application is designed to be compatible with the workpiece 4. The workpiece 4 includes the cylinder body, front and rear cover plates, and valve plates in the automobile air-conditioning compressor. The various holes and processing angles on the workpiece are processed after being positioned by the processing fixture of the present application. During processing, one end of the workpiece 4 is positioned by the positioning device 5, and the workpiece 4 can rotate in the circumferential direction; the other end of the workpiece 4 is pressed by the driving device 1 with the rotating device 3. Since the rotating device 3 can rotate inside the fixing device 2, the workpiece and the rotating device 3 can rotate 360° together during processing, so as to facilitate the processing of holes, processing angles, etc. at various positions on the workpiece.

[0033] The fixing device 2 includes a fixing seat 23 fixedly connected to the base of the driving device 1, and the two are fixed or welded into a whole by bolts. A through hole is opened inside the fixing seat 23, and the rotating device 3 is movably embedded in one end of the through hole and can perform circumferential rotation along the through hole. The fixing seat 23 is fixed to the bottom plate 21 by fixing bolts. During processing, the bottom plate 21 can be placed on the machine tool platform of the processing equipment for fixing.

[0034] In this embodiment, the rotating device 3 includes a pressing head 34 abutting against the workpiece 4 and a sleeve 31 movably embedded in the fixing device 2. The sleeve 31 is fixedly connected to the driving end of the driving device 1. After the driving device 1 is working, it drives the sleeve 31 to perform linear motion inside the fixing device 2; one end of the pressing head 34 is fixedly connected to a rotating rod 35 by bolts, and the other end abuts against the surface of the workpiece 4. The rotating rod 35 is rotatably set inside the sleeve 31.

[0035] In a specific embodiment, the driving end of the driving device 1 is connected to the sleeve 31 through an adapter 11; the driving device 1 is a gas cylinder or an oil cylinder.

[0036] In this embodiment, the material of the pressure head 34 is PEEK material, which is light in weight, high in hardness and good in wear resistance. It will not cause pressure damage to the surface of the workpiece when it contacts the surface of the workpiece, and it can generate a relatively large friction force to avoid deviation.

[0037] Specifically, the rotation of the rotating rod in the sleeve is achieved by a bearing group fixed between the rotating rod 35 and the sleeve 31, wherein the bearing group includes a thrust bearing 32 and a deep groove bearing 33. The thrust bearing and the deep groove bearing are both well-known products in the art. The bases of the thrust bearing and the deep groove bearing are fixed to the inner wall of the sleeve 31, and the inner ring is sleeved on the outer periphery of the rotating rod 35, thereby realizing the rotation of the rotating rod 35.

[0038] In a specific embodiment, a boss 351 is fixedly provided on the outer periphery of the inner end of the rotating rod 35, a thrust bearing 32 is sleeved on the rotating rod 35 located inside the boss 351, and a baffle 37 is fixedly provided at the end of the rotating rod 35, and the baffle 37 is fixed to the end of the rotating rod 35 by a locking bolt 36 to limit the thrust bearing 32. That is, the axial direction of the thrust bearing 32 is limited by the boss 351 and the baffle 37 respectively to prevent its axial movement.

[0039] A first deep groove bearing 331 is sleeved on the rotating rod 35 located outside the boss 351, and a first retaining spring 381 is fixed on the rotating rod 35 located outside the first deep groove bearing 331; the axial direction of the first deep groove bearing 331 is limited by the boss 351 and the first retaining spring 381 respectively to prevent its axial movement.

[0040] In order to improve the overall rotation stability of the rotating rod, a second deep groove bearing 332 is sleeved on the outer end of the rotating rod 35, and a second retaining spring 382 and a third retaining spring 383 are respectively fixed on the rotating rod 35 and the sleeve 31 at the axial ends of the second deep groove bearing 332, which are used to limit the axial direction of the second deep groove bearing 332.

[0041] In this embodiment, the first clamping spring 381 and the second clamping spring 382 are generally fixed by being clamped in the grooves on the outer wall of the rotating rod 35 , while the third clamping spring 383 is fixed by being embedded in the groove on the inner wall of the sleeve 31 .

[0042] like Figure 4 As shown, the positioning device 5 includes a connecting disk 51, and one side of the connecting disk 51 is movably connected to a positioning disk 52 through a pin shaft. Specifically, a plurality of pin shafts, such as diamond pins and cylindrical pins, are fixed on the bottom end surface of the positioning disk 52; a shaft sleeve is embedded in the end surface of the connecting disk 51. During assembly, the pin shaft on the positioning disk 52 is inserted into the shaft sleeve for matching, so that the positioning disk 52 can rotate freely on the connecting disk 51; if fixed, the positioning disk 52 and the connecting disk 51 can be fixed by connecting bolts or pin shafts. Support columns 53 and support blocks 55 for matching positioning and supporting the workpiece 4 are fixed on the outer end surface of the positioning disk 52; the support columns 53 and support blocks 55 are arranged in the circumferential position of the positioning disk and are arranged according to the specific structure of the workpiece 4. In this embodiment, the support columns 53 and support blocks 55 designed for cylinder parts are adapted to the side of the cylinder body. A center column 54 is fixed at the center of the positioning disk 52. During installation, the center column 54 is assembled with the center hole of the workpiece 4 through the center connecting pin 7;

[0043] In order to connect with the machine tool of the processing equipment, a positioning mandrel 6 is fixedly provided at the center of the other side of the connecting plate 51, and the positioning mandrel 6 connects the positioning device with the machine tool of the processing equipment.

[0044] Figure 4 The middle positioning device is set for the cylinder body of the automobile air-conditioning compressor. If it is set for other components, the structures of the support columns and support blocks in the positioning device should be adjusted accordingly.

[0045] During the specific operation, first install the connection disk 51 of the positioning device 5 on the machine tool of the processing equipment, and the positioning disk 52 in the positioning device can rotate 360 ​​degrees freely; then position the workpiece 4 between the positioning device 5 and the rotating device 3, and extend the driving end of the driving device to drive the sleeve 31, the rotating rod 35, and the pressure head 34 to extend toward the workpiece 4, thereby pressing the workpiece 4; rotate the direction of the workpiece 4, and the workpiece 4, the rotating device 3, and the positioning disk 52 in the positioning device 5 rotate 360 ​​degrees, so as to adjust the position to be processed on the workpiece 4, and then fix the positioning disk 52 on the connection disk 51 with the connecting bolts or pins, and then the processing operation can be carried out. When another place needs to be processed, the connecting bolts or pins can be loosened, and the positioning disk 52 can be rotated to adjust the position of the workpiece 4, and the previous operation can be repeated.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotary clamping processing fixture, comprising a positioning device (5) for positioning a workpiece (4), wherein the positioning device (5) causes the workpiece (4) to rotate in a circumferential direction; characterized in that: It also includes a clamping mechanism for clamping the workpiece (4), wherein the clamping mechanism and the positioning device (5) are symmetrically arranged on both sides of the workpiece (4); the clamping mechanism includes a driving device (1), wherein the driving device (1) is connected to a fixing device (2), wherein the fixing device (2) is internally rotatably connected to a rotating device (3), wherein one end of the rotating device (3) is fixedly connected to the driving end of the driving device (1) and the other end is in contact with the workpiece (4); the driving end of the driving device (1) drives the rotating device (3) to move linearly to clamp or loosen the workpiece (4).

2. A rotary pressing processing fixture according to claim 1, characterized in that: The fixing device (2) comprises a fixing seat (23) fixedly connected to the base of the driving device (1), a through hole is provided inside the fixing seat (23), and the rotating device (3) is movably embedded in one end of the through hole and can perform circumferential rotational movement along the through hole.

3. A rotary pressing processing fixture according to claim 2, characterized in that: The fixing seat (23) is fixed on the bottom plate (21).

4. The rotary pressing processing fixture according to claim 1, characterized in that: The rotating device (3) comprises a pressing head (34) abutting against a workpiece (4) and a sleeve (31) movably embedded in the fixing device (2); the sleeve (31) is fixedly connected to a driving end of a driving device (1); when the driving device (1) is in operation, the sleeve (31) is driven to perform linear motion inside the fixing device (2); one end of the pressing head (34) is fixedly connected to a rotating rod (35); the rotating rod (35) is rotatably arranged inside the sleeve (31).

5. The rotary pressing processing fixture according to claim 4, characterized in that: A bearing group is fixedly arranged between the rotating rod (35) and the sleeve (31), so that the rotating rod (35) can rotate inside the sleeve (31); the bearing group includes a thrust bearing (32) and a deep groove bearing (33).

6. The rotary pressing processing fixture according to claim 5, characterized in that: A boss (351) is fixedly provided on the outer periphery of the inner end of the rotating rod (35), a thrust bearing (32) is sleeved on the rotating rod (35) located inside the boss (351), a baffle (37) is fixedly provided at the end of the rotating rod (35), and the axial direction of the thrust bearing (32) is limited by the boss (351) and the baffle (37) respectively; A first deep groove bearing (331) is sleeved on the rotating rod (35) located outside the boss (351), and a first retaining spring (381) is fixedly provided on the rotating rod (35) located outside the first deep groove bearing (331); the axial direction of the first deep groove bearing (331) is limited by the boss (351) and the first retaining spring (381) respectively.

7. The rotary pressing processing fixture according to claim 6, characterized in that: The outer end of the rotating rod (35) is sleeved with a second deep groove bearing (332), and a second retaining spring (382) and a third retaining spring (383) are respectively fixedly provided on the rotating rod (35) and the sleeve (31) at the axial ends of the second deep groove bearing (332) for limiting the axial direction of the second deep groove bearing (332).

8. The rotary pressing processing fixture according to claim 4, characterized in that: The driving end of the driving device (1) is connected to the sleeve (31) via an adapter (11); the driving device (1) is a pneumatic cylinder or an oil cylinder.

9. The rotary pressing processing fixture according to claim 1, characterized in that: The positioning device (5) comprises a connecting disk (51), one side of which is movably connected to a positioning disk (52) via a pin shaft, and the positioning disk (52) can rotate freely on the connecting disk (51); a support column (53) and a support block (55) for coordinating and positioning and supporting the workpiece (4) are fixedly provided on the outer end surface of the positioning disk (52); and a center column (54) is fixedly provided at the center of the positioning disk (52).

10. The rotary pressing processing fixture according to claim 9, characterized in that: A positioning mandrel (6) is fixedly arranged at the center of the other side of the connecting disk (51); the center column (54) is assembled with the center hole of the processed part (4) via the center connecting column (7).

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