Inclined hole machining clamp

Abstract

The inclined hole machining clamp comprises a base and a limiting disc, the side, away from the base, of the limiting disc is provided with a first surface, the first surface abuts against the inner cavity face of a first matching cavity, a matching block extends into a second matching cavity, and when the matching block is located at the initial end of a first preset path, the first matching cavity faces the second matching cavity. A preset gap is formed between the matching block and the inner cavity surface of the second matching cavity, and when the matching block is located at the tail end of the first preset path, the matching block abuts against the inner cavity surface of the second matching cavity; the first surface of the limiting disc is matched with the first matching cavity, the compressor rear cover is preliminarily fixed, the first driving piece drives the matching piece to abut against the second matching cavity to achieve clamping and positioning, and according to the machining requirement of the inclined hole of the compressor rear cover, the multi-axis rotating mechanism adjusts the angle in the circumferential direction to meet the machining requirement of the inclined hole. The inclined hole machining clamping and positioning universality is high, and the machining precision is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to compressor processing equipment technical field, especially a inclined hole processing fixture. BACKGROUND

[0002] The rear cover is the most important and complex part in the automobile air conditioner compressor, and the machining dimensions of the rear cover are quite different due to the great difference in the appearance of different rear covers, especially the inclined hole of the rear cover has a position precision requirement.

[0003] However, the existing processing fixture has great difficulty in controlling the angle of the inclined hole. Although some fixtures can roughly position the angle of the rear cover, it is difficult to ensure that the angle of the inclined hole always remains within the range of the design requirement due to the structural limitation of the fixture itself and the influence of the machining force during the machining process. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a inclined hole processing fixture to solve the problems in the prior art, which can adjust the angle of the rear cover in the circumferential direction according to the machining requirement of the inclined hole of the rear cover.

[0005] The utility model provides a inclined hole processing fixture for clamping and fixing the rear cover of a compressor, wherein the rear cover of the compressor has a first matching cavity and a second matching cavity, and the inclined hole processing fixture comprises:

[0006] A base, one side of the base is connected with a multi-axis rotating mechanism;

[0007] A limiting disc is arranged on the other side of the base, the limiting disc has a first accommodating cavity in the inside, and the side of the limiting disc away from the base has a first surface, which abuts against the inner cavity surface of the first matching cavity;

[0008] A fixing member is arranged in the first accommodating cavity, one end of the fixing member has a matching block, the matching block extends into the second matching cavity, and the matching block can move along a first preset path; when the matching block is located at the initial end of the first preset path, a preset gap is formed between the matching block and the inner cavity surface of the second matching cavity; and when the matching block is located at the terminal end of the first preset path, the matching block abuts against the inner cavity surface of the second matching cavity.

[0009] A first driving member is arranged for driving the matching block to move along the first preset path.

[0010] The inclined hole processing fixture described above, preferably, the fixing member and the matching block have a second accommodating cavity in communication with each other, at least one opening part extending to the outside is radially arranged on one side of the shaft center of the matching block, and the size of the opening part changes when the matching block moves along the first preset path.

[0011] The inclined hole processing clamp as claimed in claim 1, wherein preferably, the surface of the limiting disc facing the base is provided with a boss extending into the base.

[0012] The first driving member comprises a shaft rod having a first end and a second end, the first end of the shaft rod is fixed on the boss, the second end of the shaft rod extends to the upper end surface of the fitting block through the second accommodating cavity, and a first guide sliding inclined surface is formed on the outer circumferential surface of the second end of the shaft rod.

[0013] The surface of the fitting block facing the shaft rod is formed with a second guide sliding inclined surface.

[0014] The fixing member can move along a second preset path, and during the movement of the fixing member, the second guide sliding inclined surface is fitted with the first guide sliding inclined surface, so as to drive the fitting block to move synchronously along the first preset path.

[0015] A second driving member is arranged for driving the fixing member to move along the second preset path.

[0016] The inclined hole processing clamp as claimed in claim 1, wherein preferably, the second driving member comprises a pull disc and a pull rod, the pull disc is arranged in the base, the pull rod connects the pull disc and the fixing member, and driving the pull disc to move along the axis direction of the base can drive the fixing member to move along the second preset path.

[0017] The inclined hole processing clamp as claimed in claim 1, wherein preferably, the pull disc is threadedly connected with the pull rod, and the fixing member is connected with the pull rod through bolts.

[0018] The inclined hole processing clamp as claimed in claim 1, wherein preferably, the first surface is provided with a positioning pin and a mistake prevention pin.

[0019] The inclined hole processing clamp as claimed in claim 1, wherein preferably, a connecting key groove is arranged at the bottom axis of the base, and the bottom of the base is provided with fasteners which are distributed in the circumferential direction.

[0020] The inclined hole processing clamp as claimed in claim 1, wherein preferably, the limiting disc is respectively provided with a cylindrical pin and a rhombic pin which are inserted and matched with the base.

[0021] Compared with the prior art, the first surface of the limiting disc and the first matching cavity are matched to preliminarily fix the compressor rear cover, the fitting member is driven by the first driving member to press the second matching cavity to realize clamping and positioning, the multi-shaft rotating mechanism is adjusted in the circumferential direction to meet the inclined hole processing requirement according to the processing requirement of the inclined hole of the compressor rear cover, the inclined hole processing clamp has high universality and high processing precision, in addition, product quality, production efficiency, labor intensity of workers and personnel can be improved, and the like. Attached Figure Description

[0022] Figure 1 This is a perspective view of a slanted hole machining fixture provided in an embodiment of this utility model;

[0023] Figure 2 This is a top view of a slanted hole machining fixture provided in an embodiment of this utility model;

[0024] Figure 3 This is a cross-sectional view of a slanted hole machining fixture provided in an embodiment of this utility model;

[0025] Figure 4 This is a cross-sectional view of the limiting disc provided in an embodiment of this utility model;

[0026] Figure 5 This is a perspective view of the fastener provided in an embodiment of this utility model;

[0027] Figure 6 This is a cross-sectional view of the mating block and shaft provided in an embodiment of this utility model;

[0028] Figure 7 This is a cross-sectional view of the second driving member provided in an embodiment of this utility model;

[0029] Figure 8 This is a perspective view of the compressor rear cover provided in an embodiment of this utility model;

[0030] Figure 9 This is a working state diagram of a slanted hole machining fixture provided in an embodiment of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10 - Base, 11 - Connecting keyway, 12 - Fastener;

[0033] 20 - Limiting plate, 201 - First receiving cavity, 202 - First surface, 21 - Boss, 22 - Positioning pin, 23 - Anti-misalignment pin, 24 - Cylindrical pin, 25 - Rhomboid pin;

[0034] 30 - Fixing element, 301 - Second receiving cavity, 31 - Mating block, 311 - Opening, 312 - Second guide slope, 32 - Second protrusion;

[0035] 40 - Shaft, 401 - First guide slope, 41 - First protrusion;

[0036] 50 - Pull plate, 51 - Pull rod, 52 - Bolt;

[0037] 60 – First mating cavity, 61 – Second mating cavity, 62 – Positioning hole, 63 – Anti-misalignment hole;

[0038] 70 - Multi-axis rotary mechanism. Detailed Implementation

[0039] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] See Figure 8 As shown in Figure 9, this utility model discloses a slanted hole machining fixture for clamping and fixing a compressor rear cover. The compressor rear cover has a first mating cavity 60 and a second mating cavity 61. The second mating cavity 61 is located at the center of the first mating cavity 60. Since the appearance of the compressor rear cover varies greatly and it has multiple uneven cavities inside, traditional fixtures are difficult to fit the shape of the rear cover when fixing it, so it is easy for it to deviate when performing slanted hole machining.

[0041] See Figure 1 -3 and Figure 8 As shown in Figure 9, the inclined hole machining fixture in this application includes a base 10, a limiting plate 20, a fixing member 30, and a first driving member, wherein:

[0042] A multi-axis rotating mechanism 70 is connected to one side of the base 10. In the embodiments provided in this application, the base 10 is a flange, and the multi-axis rotating mechanism 70 is a four-axis turntable. The four-axis turntable allows the flange to rotate circumferentially at multiple angles to accommodate the machining position of the oblique hole.

[0043] A limiting plate 20 is located on the other side of the base 10. The limiting plate 20 has a first receiving cavity 201. The side of the limiting plate 20 facing away from the base 10 has a first surface 202, which abuts against the inner cavity surface of the first mating cavity 60. The first receiving cavity 201 is used to leave a fixed space for the second mating cavity 61. The first surface 202 plays a preliminary positioning role for the compressor rear cover. The first surface 202 can be set into a shape that fits the internal shape of the first mating cavity 60 to increase the fit.

[0044] The fixing member 30 is disposed in the first receiving cavity 201. One end of the fixing member 30 has a mating block 31, which extends into the second mating cavity 61. The mating block 31 can move along a first preset path. When the mating block 31 is located at the initial end of the first preset path, there is a preset gap between the mating block 31 and the inner cavity surface of the second mating cavity 61. When the mating block 31 is located at the end of the first preset path, the mating block 31 presses against the inner cavity surface of the second mating cavity 61. The fixing component 30 can lock and release the second mating cavity 61. When there is a preset gap between the mating block 31 and the inner cavity surface of the second mating cavity 61, the compressor rear cover can be removed from the limiting plate 20. When the mating block 31 presses against the inner cavity surface of the second mating cavity 61, the compressor rear cover is locked with the limiting plate 20, thus firmly fixing it on the limiting plate 20. In order to ensure the support strength of the mating block 31, the preset gap should not be too large. When the four-axis turntable drives the flange to rotate, the compressor rear cover rotates circumferentially, which facilitates the machining of the oblique holes on the side of the compressor rear cover.

[0045] The first driving component is used to drive the mating block 31 to move along a first preset path. The first preset path is the path along which the outer wall surface of the mating block 31 moves towards the inner cavity surface of the second mating cavity 61 from its initial state.

[0046] In one possible embodiment, see Figure 3 and Figure 5 As shown, the fixing member 30 and the mating block 31 have a second receiving cavity 301 that communicates with each other. The mating block 31 has at least one opening 311 that extends outward on one side of the axis. When the mating block 31 moves along the first preset path, the size of the opening 311 changes. In the embodiments provided in this application, when the mating block 31 is located at the initial end of the first preset path, the opening size of the opening 311 is the initial angle, and the diameter of the mating block 31 is smaller than the inner diameter of the second mating cavity 61. During the movement of the mating block 31, the opening 311 is opened, the opening angle becomes larger, and the diameter of the mating block 31 becomes larger until the outer wall surface of the mating block 31 presses against the inner cavity surface of the second mating cavity 61. At this time, the mating block 31 and the inner cavity surface of the second mating cavity 61 form a tight fit. In another embodiment, the number of openings 311 can be opened according to the size of the second mating cavity 61, so as to adapt to various types of compressor back covers. In addition, when multiple openings 311 are opened, it is optimal to set multiple openings 311 evenly. In this embodiment, four openings 311 are opened, and the four openings 311 are evenly distributed along the circumference of the mating block 31.

[0047] See Figure 3As shown in Figure 4, in one embodiment of this application, the limiting disc 20 has a boss 21 extending into the base 10 on its surface facing the base 10. The first driving member includes a shaft 40, which has a first end and a second end. The first end of the shaft 40 is fixed to the boss 21, and the second end of the shaft 40 extends through the second receiving cavity 301 to the upper end face of the mating block 31. The platform of the boss 21 can close at least a portion of the first receiving cavity 201 for positioning the shaft 40. Specifically, a first protrusion 41 can be provided on the circumference of the shaft 40 near the boss 21. The first protrusion 41 and the shaft 40 can be integrally formed. The first protrusion 41 abuts against the upper surface of the boss 21 and is fixedly connected by bolts or the like. In another embodiment, a through hole can also be provided at the axis of the boss 21 to accommodate the first end of the shaft 40, making the fixing of the shaft 40 more stable.

[0048] See Figure 3 and Figure 6 As shown, a first guide slope 401 is formed on the outer circumferential surface of the second end of the shaft 40, and a second guide slope 312 is formed on the surface of the mating block 31 facing the shaft 40. The fixing member 30 can move along a second preset path. During the movement of the fixing member 30, the second guide slope 312 is in contact with the first guide slope 401 to drive the mating block 31 to move synchronously along the first preset path. By designing the angle, shape, and size of the first guide slope 401 and the second guide slope 312, the moving distance and position of the mating block 31 on the first preset path can be controlled. The second guide slope 312 slides on the first guide slope 401, thereby opening the opening 311. The outer wall surface of the mating block 31 approaches and presses against the inner wall surface of the second mating cavity 61. This driving method can control the opening angle of the opening 311. In the embodiments provided in this application, the first guide slope 401 is inclined from the first end to the second end, and the inclination angle of the second guide slope 312 is adapted to the first guide slope 401.

[0049] The second driving member is used to drive the fixing member 30 to move along the second preset path. In the embodiment provided in this application, the second preset path is a path through which the second guide slope 312 can slide on the first guide slope 401 by driving the fixing member 30. In order to facilitate driving, a second protrusion 32 is provided on the side of the fixing member 30 away from the mating block 31. The second protrusion 32 is arranged on the first protrusion 41, and there is a certain distance between the second protrusion 32 and the first protrusion 41. By driving the second protrusion 32 to move closer to or away from the first protrusion 41, the second guide slope 312 slides relative to the first guide slope 401, thereby opening the opening 311.

[0050] In one possible implementation, see [link to implementation details]. Figure 3 and Figure 7As shown, the second driving component includes a pull plate 50 and a pull rod 51. The pull plate 50 is disposed within the base 10, and the pull rod 51 connects the pull plate 50 and the fixing member 30. Driving the pull plate 50 to move along the axial direction of the base 10 can drive the fixing member 30 to move along a second preset path. As a component connecting the pull plate 50 and the fixing member 30, the pull rod 51 can efficiently and stably transmit the linear motion of the pull plate 50 to the fixing member 30. As a preferred method, multiple pull rods 51 are arranged along the circumference of the fixing member 30. Multiple pull rods 51 share the pulling force, which can significantly increase the load-bearing capacity of the entire driving structure. The driving method of the pull plate 50 only needs to be able to drive the pull plate 50 to move along the axial direction of the base 10. It can be a driving component on a four-axis turntable or other driving components, which are not limited here.

[0051] See Figure 3 and Figure 7 As shown, further, in order to achieve the positioning of the second protrusion 32 and the pull plate 50, the pull plate 50 is threadedly connected to the pull rod 51, and the fixing member 30 is connected to the pull rod 51 by bolts 52. Specifically, the first protrusion 41, the second protrusion 32, the boss 21 and the pull plate 50 are respectively provided with mounting holes. The pull rod 51 passes through the mounting holes on the first protrusion 41, the boss 21 and the pull plate 50 in sequence. One end of the pull rod 51 abuts against the surface of the second protrusion 32 facing the first protrusion 41. The bolt 52 passes through the mounting hole on the second protrusion 32 and is fixedly connected to the pull rod 51. The other end of the pull rod 51 is threadedly connected to the pull plate 50.

[0052] See Figure 1 As shown in Figure 2, in one feasible embodiment, a positioning pin 22 and an anti-misalignment pin 23 are protruding on the first surface 202. Both the positioning pin 22 and the anti-misalignment pin 23 have circular cross-sections. The positioning pin 22 and the anti-misalignment pin 23 are different in size for easy differentiation. Corresponding positioning holes 62 and anti-misalignment holes 63 are provided on the compressor rear cover. When placing the compressor rear cover, the positioning pin 22 is aligned with the positioning hole 62, and the anti-misalignment hole 63 is aligned with the anti-misalignment pin 23, thereby positioning the compressor rear cover and preventing incorrect clamping that could lead to scrap.

[0053] To connect base 10 to the four-axis rotary table, see [link / reference]. Figure 3 and Figure 9 As shown, a connecting keyway 11 is provided at the bottom axis of the base 10, and fasteners 12 are provided at the bottom of the base 10, which are distributed circumferentially. The fasteners 12 can be any type such as bolts or pins.

[0054] See Figure 2As shown, the limiting plate 20 is provided with cylindrical pins 24 and diamond pins 25 that are inserted into the base 10. The cylindrical pins 24 and diamond pins 25 are respectively provided on both sides of the limiting plate 20. The limiting plate 20 is connected to the flange by fasteners 12, and the combination of cylindrical pins 24 and diamond pins 25 is used to further accurately position the limiting plate 20 and limit its degree of freedom on the flange. In addition, the separate provision of cylindrical pins 24 and diamond pins 25 can also ensure that the position of the limiting plate 20 on the flange has a high degree of repeatability each time it is installed.

[0055] Based on the above embodiments, the working process of this utility model is as follows:

[0056] The compressor rear cover is placed on the limiting plate 20 by the positioning pin 22 and the anti-misalignment pin 23. The first surface 202 abuts against the first mating cavity 60. The mating block 31 extends into the second mating cavity 61. The drive pull plate 50 moves along the axial direction of the base 10. The pull plate 50 and the pull rod 51 drive the fixing member 20 to move along the second preset path. The second guide sliding slope 312 slides relative to the first guide sliding slope 401. The opening 311 is opened. The mating block 31 moves along the first preset path. When the outer wall surface of the mating block 31 is completely pressed against the inner cavity surface of the second mating cavity 61, the compressor rear cover is clamped and fixed. The base 10 is rotated by driving the four-axis turntable, thereby causing the compressor rear cover to rotate so that the oblique hole on the compressor rear cover can be processed.

[0057] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. An inclined hole processing fixture for clamping and fixing a compressor back cover, the compressor back cover having a first matching cavity and a second matching cavity, characterized in that, The oblique hole processing clamp comprises: a base, one side of the base being connected with a multi-axis rotating mechanism; a limiting disc provided on the other side of the base, the limiting disc having a first accommodating cavity in the limiting disc, the side of the limiting disc away from the base having a first surface, the first surface abutting against the inner cavity surface of the first matching cavity; a fixing member provided in the first accommodating cavity, one end of the fixing member having a matching block, the matching block extending into the second matching cavity, the matching block being movable along a first preset path, when the matching block is located at the initial end of the first preset path, the matching block having a preset gap with the inner cavity surface of the second matching cavity, when the matching block is located at the terminal end of the first preset path, the matching block abutting against the inner cavity surface of the second matching cavity; a first driving member for driving the matching block to move along the first preset path.

2. The inclined hole machining jig according to claim 1, characterized by: The fixing member and the matching block have a second accommodating cavity in communication with each other, at least one opening extending to the outside being radially provided on one side of the shaft center of the matching block, the size of the opening changing when the matching block moves along the first preset path.

3. The oblique hole processing clamp according to claim 2, wherein: the surface of the limiting disc facing the base is provided with a boss extending into the base; the first driving member comprises a shaft rod, the shaft rod having a first end and a second end, the first end of the shaft rod being fixedly provided on the boss, the second end of the shaft rod extending to the upper end surface of the matching block through the second accommodating cavity, a first guide sliding inclined surface being formed on the outer circumferential surface of the second end of the shaft rod; a second guide sliding inclined surface being formed on the surface of the matching block facing the shaft rod; the fixing member is movable along a second preset path, during the movement of the fixing member, the second guide sliding inclined surface abutting against the first guide sliding inclined surface to drive the matching block to synchronously move along the first preset path; a second driving member for driving the fixing member to move along the second preset path.

4. The inclined hole machining jig according to claim 3, characterized by The second driving member comprises a pull disc and a pull rod, the pull disc being provided in the base, the pull rod connecting the pull disc and the fixing member, the pull disc being movable along the axis direction of the base to drive the fixing member to move along the second preset path.

5. The inclined hole machining jig according to claim 4, wherein The pull disc is threadedly connected with the pull rod, and the fixing member is connected with the pull rod through a bolt.

6. The inclined hole machining jig according to claim 1, wherein A positioning pin and a mistake prevention pin are protrudingly provided on the first surface.

7. The inclined hole machining jig according to claim 1, wherein A connecting key groove is provided at the bottom shaft center of the base, and the bottom of the base is provided with fasteners distributed in the circumferential direction.

8. The inclined hole machining jig according to claim 4, wherein Cylindrical pins and rhombic pins for plug-in cooperation with the base are respectively provided on the limiting disc.

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