A fixture for machining the housing of a vacuum pump

Abstract

This utility model relates to the field of tooling and fixture technology, specifically disclosing a fixture for machining the housing of a vacuum pump. The housing has multiple positioning holes and mounting holes, and the housing is in a vertical position on the fixture. The fixture includes: a base plate; a support plate vertically mounted on the base plate, with the bottom surface of the housing parallel to the support plate; multiple positioning units detachably mounted on the support plate, the positioning units being used to pass through the positioning holes; and multiple locking units detachably mounted on the support plate, the locking units being used to pass through the mounting holes, creating a gap between the bottom surface of the housing and the support plate. This utility model adopts a vertical clamping structure for the housing, and the positioning and locking positions are both hidden on the end face matching the housing, while multiple outer surfaces of the housing are fully exposed, facilitating machining and improving machining efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically a fixture for machining the housing of a vacuum pump. Background Technology

[0002] Vacuum pumps, such as Roots vacuum pumps, primarily consist of a motor and gearbox for power transmission, supplemented by an oil tank for lubrication. Typically, the gearbox and oil tank are located at opposite ends of the pump housing. During manufacturing, the gearbox and oil tank housings require clamping and fixing before surface machining or drilling. However, current clamping methods often clamp only the sides of the housing, making side machining difficult or impossible. Multiple clamps are needed to process different surfaces before complete machining can be achieved, resulting in low efficiency and high cost. Utility Model Content

[0003] The purpose of this invention is to provide a fixture for machining the housing of a vacuum pump, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a fixture for machining the housing of a vacuum pump, wherein the housing has multiple positioning holes and mounting holes, and the housing is in a vertical position on the fixture, the fixture comprising:

[0005] substrate;

[0006] A support plate is vertically mounted on the base plate, and the bottom surface of the housing is parallel to the support plate;

[0007] Multiple positioning units are detachably mounted on the support plate, the positioning units being used to pass through positioning holes;

[0008] Multiple locking units are detachably mounted on the support plate. The locking units are inserted into mounting holes to create a gap between the bottom surface of the housing and the support plate.

[0009] Furthermore, the support plate is provided with a positioning groove, and the positioning unit includes a positioning seat and a first locking member. The positioning seat is disposed in the positioning groove, and the first locking member passes through the positioning seat and the support plate and locks the positioning seat on the support plate.

[0010] Furthermore, the positioning seat includes a first positioning block and a second positioning block arranged coaxially. The outer diameter of the second positioning block is smaller than the outer diameter of the first positioning block. A countersunk hole extending to the first positioning block is provided in the second positioning block, and the countersunk hole is for the first locking member to pass through.

[0011] Furthermore, the first positioning block is disposed in the positioning groove, and the second positioning block protrudes to the outside of the positioning groove and is used to engage with the positioning hole.

[0012] Furthermore, the support plate is provided with a locking groove, the locking unit includes a pad, the locking groove is used to accommodate the pad, the pad part protrudes to the outside of the support plate, the pad is provided with a first connecting hole for the second locking member to pass through, and the second locking member is used to screw into the mounting hole.

[0013] Furthermore, the pad is provided with a plurality of second connecting holes, the second connecting holes for the third locking member to pass through, the third locking member being used to lock the pad to the support plate.

[0014] Furthermore, the support plate is provided with multiple ribs, which are connected to the back of the support plate, and the box body is provided on the front of the support plate.

[0015] Furthermore, a machining hole is provided on the support plate.

[0016] This utility model has the following beneficial effects:

[0017] This utility model adopts a box-type vertical clamping structure, and the positioning and locking positions are hidden on the end face that matches the box. Multiple outer sides of the box are fully exposed, which facilitates processing and improves processing efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the fixture used for machining the vacuum pump housing in Example 1, combined with the housing.

[0020] Figure 2 for Figure 1 An enlarged schematic diagram of the fixture;

[0021] Figure 3 for Figure 2 A diagram from another perspective;

[0022] Figure 4 for Figure 2 Exploded view of the central locking unit;

[0023] Figure 5 for Figure 2 An exploded view of the positioning unit. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] like Figures 1-5 As shown, the fixture for machining the housing of the vacuum pump in this embodiment is a housing for the gearbox or the oil tank of the vacuum pump. The housing 100 has a common feature, namely, it has multiple positioning holes 101 and mounting holes on one end face. The positioning holes 101 are smooth through holes, and the mounting holes can be threaded holes.

[0027] Specifically, the fixture includes a base plate 10, a support plate 20 vertically mounted on the base plate 10, multiple positioning units 30 detachably mounted on the support plate 20, and multiple locking units 40 detachably mounted on the support plate 20. The positioning units 30 realize the positioning connection of the box 100, and the locking units 40 realize the locking and fixing of the box 100. The box 100 is clamped in a vertical state.

[0028] Here, the bottom surface of the housing 100 is arranged parallel to the support plate 20. A positioning groove 21 is provided on the support plate 20. The positioning unit 30 is used to pass through the positioning hole 101. The positioning unit 30 includes a positioning seat 31 and a first locking member 32. The positioning seat 31 is arranged in the positioning groove 21. The first locking member 32, such as a bolt, passes through the positioning seat 31 and the support plate 20 and locks the positioning seat 31 on the support plate 20.

[0029] Furthermore, the positioning base 31 includes a first positioning block 311 and a second positioning block 312 coaxially arranged, both of which have a cylindrical structure. The outer diameter of the second positioning block 312 is smaller than the outer diameter of the first positioning block 311. The second positioning block 312 is provided with a countersunk hole 313 extending to the first positioning block 311. The countersunk hole 313 is for the first locking member 32 to pass through. The first positioning block 311 is disposed in the positioning groove 21, and the second positioning block 312 protrudes to the outside of the positioning groove 21 and is used to insert and cooperate with the positioning hole 101, which can avoid incorrect assembly position of the housing 100.

[0030] The locking unit 40 is used to pass through the mounting hole, and a gap exists between the bottom surface of the housing 100 and the support plate 20. A locking groove is provided on the support plate 20. The locking unit 40 includes a pad 41. The locking groove is used to accommodate the pad 41. The pad 41 protrudes to the outside of the support plate 20. A first connecting hole 43 is provided on the pad 41 for the second locking member 42 to pass through. The second locking member 42, such as a bolt, is used to screw into the mounting hole.

[0031] The pad 41 is provided with a plurality of second connecting holes 44, which are distributed around the first connecting hole 43. The second connecting holes 44 are for a third locking member, such as a bolt, to pass through, and the third locking member is used to lock the pad 41 to the support plate 20.

[0032] Here, a plurality of ribs 22 are provided on the support plate 20, the ribs 22 are connected to the base plate 10, the ribs 22 are connected to the back side of the support plate 20, and the box body 100 is provided on the front side of the support plate 20.

[0033] Here, a machining hole 23 is provided on the support plate 20. The machining hole 23 allows observation of the corresponding position in the internal box 100 from the back, and also plays a certain role in heat dissipation and weight reduction.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A jig for machining a case of a vacuum pump, the case having a plurality of positioning holes and a mounting hole, characterized by, The box body is in an upright position on the clamp, and the clamp includes: substrate; A support plate is vertically mounted on the base plate, and the bottom surface of the housing is parallel to the support plate; Multiple positioning units are detachably mounted on the support plate, the positioning units being used to pass through positioning holes; Multiple locking units are detachably mounted on the support plate. The locking units are inserted into mounting holes to create a gap between the bottom surface of the housing and the support plate.

2. A vacuum pump case processing jig according to claim 1, characterized by: The support plate is provided with a positioning groove, and the positioning unit includes a positioning seat and a first locking member. The positioning seat is disposed in the positioning groove, and the first locking member passes through the positioning seat and the support plate and locks the positioning seat on the support plate.

3. A vacuum pump case processing jig according to claim 2, characterized in that: The positioning seat includes a first positioning block and a second positioning block arranged coaxially. The outer diameter of the second positioning block is smaller than that of the first positioning block. The second positioning block has a countersunk hole extending to the first positioning block, and the countersunk hole is for the first locking member to pass through.

4. A vacuum pump case processing jig according to claim 3, characterized in that: The first positioning block is disposed in the positioning groove, and the second positioning block protrudes to the outside of the positioning groove and is used to engage with the positioning hole.

5. The vacuum pump case machining jig according to claim 1, characterized by: The support plate is provided with a locking groove, and the locking unit includes a pad. The locking groove is used to accommodate the pad. The pad protrudes to the outside of the support plate. The pad is provided with a first connecting hole for the second locking member to pass through. The second locking member is used to screw into the mounting hole.

6. A vacuum pump case processing jig according to claim 5, characterized in that: The pad is provided with a plurality of second connecting holes, the second connecting holes are for the third locking member to pass through, the third locking member is used to lock the pad to the support plate.

7. The vacuum pump case machining jig according to claim 1, characterized by: The support plate is provided with multiple ribs, which are connected to the back of the support plate, and the box body is provided on the front of the support plate.

8. The vacuum pump case machining jig according to claim 1, characterized by: A machining hole is provided on the support plate.

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