Clamp for machining valve plate face of compressor cylinder body

Abstract

The utility model discloses a clamp for processing a valve plate surface of a compressor cylinder body, which comprises a bottom plate and a plurality of telescopic cylinders arranged on the upper end face of the bottom plate, a positioning disc is arranged on the upper end face of the bottom plate, and the positioning disc is detachably connected with the bottom plate through a zero point system. The upper end face of the positioning disc is provided with a positioning part for limiting a to-be-machined part, and the telescopic cylinder is provided with a press-fitting part for fixing the to-be-machined part. The cylinder body clamping and positioning device is simple in structure, by arranging the zero point system, the positioning disc, the telescopic cylinder and the press-fitting part, when the cylinder body clamping and positioning device is used, a part to be machined is placed on the positioning disc to be positioned, the telescopic cylinder drives the pressing plate to descend through the telescopic shaft, the top of a cylinder body is pressed through the press-fitting part, clamping and positioning of the cylinder body are achieved, and it is guaranteed that the cylinder body does not deflect in the circumferential direction during machining; the positioning part is arranged, the center rod and the limiting pin are used for supporting the limiting face of the to-be-machined part, the limiting area can be reduced, and the positioning precision and consistency are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor valve plate processing, in particular to a clamp for processing the valve plate surface of a compressor cylinder body. Background Art

[0002] The cylinder block is a critical and complex part in the automotive air-conditioning compressor. Due to the great differences in the appearance of different cylinder blocks, the internal processing dimensions are also very different. At present, during the processing of the cylinder valve plate surface, due to the different shapes of the cylinder blocks, the fixtures used for processing different types of cylinder blocks are not compatible. When a change of shape is required, it takes a lot of time to replace the fixture.

[0003] Traditional fixtures and the method of replacing fixtures are to manually disassemble various bolts, which increases the labor intensity of workers and reduces the efficiency of changeover. At the same time, the position accuracy of the tooling is difficult to ensure and the consistency is poor, resulting in a high product scrap rate. Due to the instability of the bolt connection, it is impossible to achieve uniformity between the tooling accuracy and the product quality, which easily causes the quality of the automotive air-conditioning compressor to decline. For this reason, a fixture for processing the valve plate surface of the compressor cylinder is proposed. Utility Model Content

[0004] The utility model aims to provide a clamp for machining a valve plate surface of a compressor cylinder body, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamp for processing the valve plate surface of a compressor cylinder body, comprising a base plate and a plurality of telescopic cylinders installed on the upper end surface of the base plate, the upper end surface of the base plate is provided with a positioning plate, the positioning plate and the base plate are detachably connected through a zero-point system, the upper end surface of the positioning plate is provided with a positioning portion for limiting the parts to be processed, and the telescopic cylinder is provided with a pressing portion for fixing the parts to be processed.

[0006] As a further solution of the utility model: the upper end surface of the base plate is provided with a circular groove formed around the positioning plate, several of the telescopic cylinders are located above the circular groove, and a connecting plate is installed at the bottom of several telescopic cylinders, and two waist-shaped grooves are provided on the surface of the connecting plate, and the two waist-shaped grooves are symmetrically distributed on opposite sides of the telescopic cylinder.

[0007] As a further solution of the utility model: the pressing part includes a pressing plate and a pressing head, the pressing plate is installed on the upper end surface of the telescopic cylinder, and the end of the pressing plate is installed with a pressing head that contacts the part to be processed.

[0008] As a further solution of the utility model: a plurality of first threaded holes are provided on the zero point system, a plurality of second threaded holes are provided on the bottom plate, the first threaded holes and the second threaded holes are arranged in one-to-one correspondence and the corresponding first threaded holes and second threaded holes are connected by fastening bolts.

[0009] As a further solution of the utility model: the positioning part includes a center rod arranged at the center of the upper end of the positioning plate, and an anti-mistake rod and a limit pin installed on the upper end surface of the positioning plate.

[0010] As a further solution of the utility model: an anti-collision pad is installed at the end of the central rod.

[0011] As a further solution of the utility model: the outer side wall of the zero point system is provided with an air port for an external air pipe, the upper end surface of the zero point system is provided with four equidistant limit grooves along the side wall, and the central area of ​​the upper end surface of the zero point system is provided with a positioning pin hole.

[0012] As a further solution of the utility model: a positioning pin matched with the positioning pin hole is installed in the central area of ​​the lower end surface of the positioning plate, and a locking pin is arranged along the side wall of the lower end surface of the positioning plate, and the locking pin is matched with the limiting groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By setting the zero point system, positioning plate, telescopic cylinder and press-fitting part, when in use, the parts to be processed are placed on the positioning plate for positioning. The telescopic cylinder drives the pressing plate to descend through the telescopic shaft, and the top of the cylinder body is pressed by the press-fitting part to achieve the clamping and positioning of the cylinder body, ensuring that the cylinder body does not deflect in the circumferential direction during processing.

[0015] 2. By setting up the positioning part and using the center rod and the limit pin to support the limit surface of the part to be processed, the limit area can be reduced and the positioning accuracy and consistency can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the clamp of the utility model;

[0017] Figure 2 It is a schematic diagram of the zero point system and positioning plate combination of the utility model;

[0018] Figure 3 It is a schematic diagram of the zero point system of the utility model;

[0019] Figure 4 It is a schematic diagram of the positioning plate of the utility model;

[0020] Figure 5 It is a schematic diagram of assembling the parts to be processed of the utility model;

[0021] In the figure: 1. Base plate; 2. Zero point system; 21. Air port; 22. Limiting groove; 23. Positioning pin hole; 3. Positioning plate; 31. Positioning pin; 32. Bayonet pin; 4. Connecting plate; 5. Telescopic cylinder; 6. Pressing plate; 7. Pressing head; 8. Anti-error rod; 9. Center rod; 10. Anti-collision pad; 11. Limiting pin; 12. Fastening bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 In an embodiment of the utility model, a clamp for processing a valve plate surface of a compressor cylinder body comprises a base plate 1 and a plurality of telescopic cylinders 5 mounted on the upper end surface of the base plate 1, a positioning plate 3 is provided on the upper end surface of the base plate 1, the positioning plate 3 and the base plate 1 are detachably connected via a zero point system 2, a positioning portion for limiting a part to be processed is provided on the upper end surface of the positioning plate 3, and a pressing portion for fixing the part to be processed is installed on the telescopic cylinder 5.

[0024] Specifically, there are two telescopic cylinders 5, and the two telescopic cylinders 5 are both arranged on the outer peripheral surface of the zero point system 2, which is convenient for assembling the parts to be processed. Secondly, under the action of the zero point system 2, it is convenient to replace the positioning plate 3 adapted to different parts to be processed, which speeds up the efficiency of replacing the positioning plate 3. At the same time, the pressing part above the two telescopic cylinders 5 can better fix the upper part of the parts to be processed, and the lower part of the parts to be processed is supported by the positioning plate 3, so that the parts to be processed can be fixed well.

[0025] See also Figure 1 In one embodiment, in this embodiment, in order to change the clamping position longitudinally according to the diameter of the part to be processed, preferably, the upper end surface of the base plate 1 is provided with a circular groove formed around the positioning plate 3, and several telescopic cylinders 5 are located above the circular groove, and the bottom of the several telescopic cylinders 5 is installed with a connecting plate 4, and the surface of the connecting plate 4 is provided with two waist-shaped grooves, and the two waist-shaped grooves are symmetrically distributed on the opposite sides of the telescopic cylinder 5.

[0026] Specifically, an adjusting bolt is installed inside the waist-shaped groove, and the end of the adjusting bolt passes through the connecting plate 4 and is connected to the inside of the circular groove, so that the position of the telescopic cylinder 5 can be adjusted at will. The existence of the waist-shaped groove can also make the placement angle of the telescopic cylinder 5 rotate to a certain extent to ensure that the telescopic cylinder 5 is better installed. When in use, the telescopic cylinder 5 can adjust its position according to the position where the corresponding part to be processed needs to be pressed, so that the telescopic cylinder 5 moves along the groove direction of the circular groove, and then the adjusting bolt is inserted into the waist-shaped groove and connected to the circular groove, thereby fixing the position of the telescopic cylinder 5.

[0027] See also Figure 1 In one embodiment, in this embodiment, preferably, the pressing part includes a pressing plate 6 and a pressing head 7. The pressing plate 6 is installed on the upper end surface of the telescopic cylinder 5. The end of the pressing plate 6 is installed with a pressing head 7 that contacts the part to be processed. The material of the pressing head 7 is copper, which can ensure that the part to be processed is not damaged after the tooling is pressed.

[0028] Specifically, the pressing plate 6 is connected to the telescopic cylinder 5, and the telescopic cylinder 5 controls the change of the height of the pressing plate 6. Secondly, the pressure head 7 is fixed on the lower end surface of the pressing plate 6 and contacts the part to be processed. In this way, before the part to be processed is placed on the positioning plate 3, the telescopic cylinder 5 raises the height of the pressing plate 6 to increase the space between the pressing plate 6 and the positioning plate 3, which is convenient for the placement of the part to be processed. When the part to be processed is placed, the telescopic cylinder 5 lowers the height of the pressing plate 6, so that the pressure head 7 fixed on the lower end surface of the pressing plate 6 is in close contact with the part to be processed, thereby completing the fixation of the part to be processed.

[0029] See also Figure 1 In one embodiment, in this embodiment, preferably, a plurality of first threaded holes are opened on the zero point system 2, and a plurality of second threaded holes are opened on the base plate 1, the first threaded holes and the second threaded holes are arranged one by one and the corresponding first threaded holes and the second threaded holes are connected by fastening bolts 12, further, when the fastening bolts 12 enter the first threaded holes and the second threaded holes in sequence, not only the positioning of the fastening bolts 12 on the base plate 1 can be completed, but also the zero point system 2 can be fixed on the base plate 1.

[0030] See also Figure 1 In one embodiment, in this embodiment, preferably, the positioning portion includes a center rod 9 arranged at the center of the upper end of the positioning plate 3 and an anti-error rod 8 and a limit pin 11 installed on the upper end surface of the positioning plate 3, and an anti-collision pad 10 is installed at the end of the center rod 9.

[0031] Specifically, the positions of the error-proofing rod 8, the center rod 9 and the limit pin 11 are all set according to the model of the corresponding part to be processed, which makes it convenient to quickly place the part to be processed on the positioning plate 3 and ensures that the part to be processed will not be offset in the horizontal direction. Secondly, the anti-collision pad 10 can ensure that the end face of the center rod 9 is in soft contact when it contacts the part, which can reduce wear and play a certain buffering role.

[0032] In this embodiment, the error-proofing rod 8 and the limit pin 11 are installed with interference fit on the positioning disk 3, and the error-proofing rod 8 and the limit pin 11 are evenly distributed on the circumference, and a limit gap is formed between the center rod 9 and the error-proofing rod 8. When in use, the parts to be processed are positioned by the center rod 9 and the error-proofing rod 8 and limited by the limit pin 11 to prevent the parts to be processed from rotating relative to the positioning disk 3. The slotted positioning disk 3 and the cylinder limit surface support can reduce the limit area and ensure the accuracy and consistency of positioning. The center rod 9 on the positioning disk 3 is locked and fixed by bolts, and the limit pin 11 and the error-proofing rod 8 have an interference fit, which can ensure fast switching and later maintenance.

[0033] See also Figure 1 In one embodiment, in this embodiment, preferably, the outer side wall of the zero point system 2 is provided with an air port 21 for connecting to an external air pipe, the upper end surface of the zero point system 2 is provided with four equidistant limit grooves 22 along the side wall, and the central area of ​​the upper end surface of the zero point system 2 is provided with a positioning pin hole 23. Furthermore, when air is taken into the air port 21, it can be discharged through the air outlet located on the upper end surface of the zero point system 2. When the air outlet is blocked by the positioning plate 3, the gas will generate an upward impact force, so that the zero point system 2 and the positioning plate 3 can be separated, and rapid product replacement can be ensured.

[0034] See also Figure 1 In one embodiment, in this embodiment, preferably, a positioning pin 31 adapted to the positioning pin hole 23 is installed in the central area of ​​the lower end surface of the positioning disk 3, and a bayonet pin 32 is provided along the side wall of the lower end surface of the positioning disk 3, and the bayonet pin 32 is adapted to the limiting groove 22. Furthermore, by providing the positioning pin 31 to facilitate insertion into the interior of the positioning pin hole 23, and then providing the bayonet pin 32 to facilitate insertion into the interior of the limiting groove 22, the horizontal direction restriction between the zero point system 2 and the positioning disk 3 can be achieved, thereby preventing the positioning disk 3 from rotating or shifting laterally.

[0035] The working principle and use process of the utility model are as follows: the positioning plate 3 is installed on the zero point system 2 through the zero point pin, which can ensure that the positioning plate can be quickly replaced when the product is changed, and the product can be quickly replaced. The cylinder body a is placed on the positioning plate 3, and is positioned by the center rod 9 and the anti-error rod 8 and limited by the limit pin 11. The telescopic cylinder 5 drives the pressing plate 6 to descend through the telescopic shaft, and the top of the cylinder body a is pressed by the pressure head 7 to achieve clamping and positioning of the cylinder body a, which can ensure that the cylinder body a is not damaged after the tooling is pressed.

[0036] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0037] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A clamp for machining valve plate surfaces of a compressor cylinder body, comprising a base plate (1) and a plurality of telescopic cylinders (5) mounted on the upper end surface of the base plate (1), characterized in that: The upper end surface of the base plate (1) is provided with a positioning plate (3), the positioning plate (3) and the base plate (1) are detachably connected via a zero point system (2), the upper end surface of the positioning plate (3) is provided with a positioning portion for limiting a part to be processed, and a pressing portion for fixing the part to be processed is installed on the telescopic cylinder (5).

2. The clamp for machining valve plate surface of a compressor cylinder according to claim 1, characterized in that: The upper end surface of the bottom plate (1) is provided with a circular groove formed around the positioning plate (3), and the plurality of telescopic cylinders (5) are located above the circular groove, and the bottoms of the plurality of telescopic cylinders (5) are provided with a connecting plate (4), and the surface of the connecting plate (4) is provided with two waist-shaped grooves, and the two waist-shaped grooves are symmetrically distributed on opposite sides of the telescopic cylinder (5).

3. The jig for machining valve plate surface of a compressor cylinder according to claim 1, characterized in that: The press-fitting portion comprises a press plate (6) and a press head (7); the press plate (6) is mounted on the upper end surface of the telescopic cylinder (5); and the end of the press plate (6) is mounted with a press head (7) that contacts the part to be processed.

4. The jig for machining valve plate surface of a compressor cylinder according to claim 1, characterized in that: The zero point system (2) is provided with a plurality of first threaded holes, and the base plate (1) is provided with a plurality of second threaded holes, the first threaded holes and the second threaded holes are arranged in a one-to-one correspondence, and the corresponding first threaded holes and second threaded holes are connected by fastening bolts (12).

5. The jig for machining valve plate surface of a compressor cylinder according to claim 1, characterized in that: The positioning portion comprises a center rod (9) disposed at the center of the upper end of the positioning plate (3), and an anti-misalignment rod (8) and a limit pin (11) mounted on the upper end surface of the positioning plate (3).

6. The jig for machining valve plate surface of a compressor cylinder according to claim 5, characterized in that: An anti-collision pad (10) is installed at the end of the central rod (9).

7. The jig for machining valve plate surface of a compressor cylinder according to claim 1, characterized in that: The outer side wall of the zero point system (2) is provided with an air port (21) for connecting to an external air pipe, the upper end surface of the zero point system (2) is provided with four equidistantly arranged limit grooves (22) along the side wall, and the central area of ​​the upper end surface of the zero point system (2) is provided with a positioning pin hole (23).

8. The jig for machining valve plate surface of a compressor cylinder according to claim 7, characterized in that: A positioning pin (31) adapted to the positioning pin hole (23) is installed in the central area of ​​the lower end surface of the positioning plate (3), and a locking pin (32) is arranged along the side wall of the lower end surface of the positioning plate (3), and the locking pin (32) is adapted to the limiting groove (22).

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