A clamp for a housing

Abstract

This utility model relates to the field of tooling and fixture technology, specifically disclosing a fixture for clamping machine housings. The outer surface of the machine housing has multiple stepped surfaces. It includes: a base plate with four corners; clamping assemblies disposed at the corners, each clamping assembly comprising two clamping units arranged at an angle of 60°-100°, which are used to press against the stepped surfaces and are capable of rotation and lifting; and positioning assemblies disposed at the corners, comprising two positioning units disposed in front of the clamping units, which are positioned below the machine housing and are height-adjustable. This utility model, based on the structure of an intake and exhaust end machine housing, achieves clamping of both housings with a single fixture, facilitating machining and forming, reducing component costs, and lowering production costs.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically a fixture for machine housings. Background Technology

[0002] Vacuum pumps, such as Roots vacuum pumps and screw vacuum pumps, can be used in semiconductor, lithium battery, photovoltaic, steel, chemical, petroleum, light industry, pharmaceutical and food industries. The housing is one of the important components of the vacuum pump. During the production process, the housing needs to be clamped by a fixture for surface processing. Since a vacuum pump has a housing at the intake end and a housing at the exhaust end, two fixtures are usually required, which increases the cost of use and may result in the use of the wrong fixture, affecting processing efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a clamp for machine housings 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 clamp for mounting a machine housing, wherein the outer surface of the machine housing has multiple stepped surfaces; comprising:

[0005] A substrate having four corner portions;

[0006] A clamping assembly is provided at the corner, the clamping assembly includes two clamping units arranged at an angle of 60°-100°, the clamping units are used to press against the step surface, and the clamping units can make lifting and lowering movements;

[0007] A positioning assembly is provided at the corner, the positioning assembly including two positioning units located on the front side of the clamping unit, the positioning units being positioned below the housing, and the positioning units being height adjustable.

[0008] Furthermore, the clamping unit includes a support portion, a guide portion, and a pressing portion;

[0009] The support includes a first connecting ring disposed on the substrate, a first adjusting rod screwed into the first connecting ring, and a first adjusting rotating body screwed onto the first adjusting rod;

[0010] The guide portion includes a second connecting ring disposed on the substrate, a second adjusting rod screwed into the second connecting ring, and a second adjusting rotating body screwed onto the second adjusting rod;

[0011] The pressing part includes a pressure plate, one end of which is rotatably connected to a first adjusting rod. The first adjusting rotating body is located below the pressure plate, and the other end of the pressure plate is connected to a second adjusting rod. The second adjusting rotating body is located above the pressure plate, and the pressure plate can move up and down on the first adjusting rod and the second adjusting rod.

[0012] Furthermore, the positioning unit includes a third connecting ring disposed on the substrate, a positioning member screwed onto the third connecting ring, the positioning member being movable within the third connecting ring and its height being adjusted, and the positioning member abutting against the lower end face of the housing.

[0013] Furthermore, it also includes a measuring component disposed at the corner, the measuring component comprising two measuring blocks, each measuring block having multiple flat measuring surfaces, and at least one measuring surface being disposed parallel to the side surface of an adjacent substrate, the measuring blocks being used by a depth gauge to measure the distance between the outer side surface of the housing and the measuring blocks.

[0014] Furthermore, one of the measuring blocks is located on a diagonal of the substrate, and the other measuring block is located inside the diagonal.

[0015] This utility model has the following beneficial effects:

[0016] This utility model is based on the structure of the intake end housing and the exhaust end housing. The two housings can be clamped together with one clamp, which is easy to process and form, with low component cost and reduced production cost.

[0017] This invention achieves rapid clamping and positioning of the machine housing through the cooperation of the clamping component and the positioning component, thereby improving clamping efficiency.

[0018] This invention, through the setting of measuring blocks, can effectively measure whether the position of the machine housing is accurate, making adjustments convenient and ensuring clamping accuracy. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the housing fixture combined with the intake housing in Example 1;

[0021] Figure 2 for Figure 1 An enlarged schematic diagram of the fixture;

[0022] Figure 3 for Figure 2 A top-down view;

[0023] Figure 4 This is a schematic diagram of the housing fixture combined with the exhaust end housing in Example 2. 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 1-3 As shown, the housing fixture in this embodiment can clamp the suction end housing 101 of a vacuum pump of the corresponding type. The outer side of the housing has multiple stepped surfaces. The corresponding fixture is composed of a base plate 10, a clamping assembly disposed on the base plate 10, a positioning assembly disposed on the base plate 10, and a measuring assembly disposed on the base plate 10.

[0027] Specifically, the substrate 10 has a square structure, thus having four corners 11, and the four corners 11 are cut off to form an edge chamfer structure.

[0028] The clamping assembly is located at the four corners 11. The clamping assembly includes two clamping units 20 arranged at an angle of 60°-100°. The clamping units 20 are used to press against the step surface. The clamping units 20 can rotate and move up and down. The clamping units 20 are mainly composed of a support part, a guide part and a pressing part.

[0029] The support includes a first connecting ring 21 disposed on the substrate 10. A first adjusting rod 22 is screwed into the first connecting ring 21, and a first adjusting rotating body 23 is screwed onto the first adjusting rod 22. The first connecting ring 21 and the first adjusting rotating body 23 can be generally nut structures. The first adjusting rod 22 can be a screw structure with full thread or partial thread. The first adjusting rod 22 can be screwed into the screw hole of the substrate 10 and fixed by the first connecting ring 21.

[0030] The guide portion includes a second connecting ring 24 disposed on the substrate 10. A second adjusting rod 25 is screwed into the second connecting ring 24. A second adjusting rotating body 26 is screwed onto the second adjusting rod 25. The second connecting ring 24 and the second adjusting rotating body 26 can also be nut structures, and the second adjusting rod 25 can also be screw structures.

[0031] The pressing part includes a pressing plate 27. One end of the pressing plate 27 is rotatably connected to the first adjusting rod 22. The first adjusting rotating body 23 is located below the pressing plate 27. The other end of the pressing plate 27 is sleeved with the second adjusting rod 25. The second adjusting rotating body 26 is located above the pressing plate 27. The pressing plate 27 can move up and down on the first adjusting rod 22 and the second adjusting rod 25. The hole connecting the pressing plate 27 to the first adjusting rod 22 and the second adjusting rod 25 is a through hole structure without threads, which facilitates lifting and rotation. The pressing plate 27 is pressed on the stepped surface and locked by the second adjusting rotating body 26.

[0032] Here, when the second adjusting rotating body 26 is unscrewed, the pressure plate 27 can be removed from the first adjusting rod 22 and the second adjusting rod 25, and then the pressure plate 27 can be put onto the first adjusting rod 22 and rotated to the desired position, so as to avoid interference with the insertion of the housing and the loss of the pressure plate 27 if it is placed anywhere.

[0033] Furthermore, the positioning unit includes a third connecting ring 31 disposed on the base plate 10, and a positioning member 32 is screwed onto the third connecting ring 31. The positioning member 32 can move within the third connecting ring 31 and adjust its height. The positioning member 32 abuts against the lower end face of the housing. The third connecting ring 31 can be a nut structure, and the positioning member 32 can be a bolt. The end abutting against the housing can be a flat end face to raise the housing and facilitate the use of the depth gauge.

[0034] Furthermore, the measuring assembly includes two measuring blocks 40, each measuring block 40 having multiple flat measuring surfaces 41, i.e., the measuring block 40 is a cubic structure, and at least one measuring surface 41 is arranged parallel to the side of the adjacent substrate 10. The measuring block 40 is used by the depth gauge to measure the distance between the outer side of the housing and the measuring block 40, ensuring that the distance value is within the required value or a certain range.

[0035] Here, one of the measuring blocks 40 is located on the diagonal line closest to each other in the substrate 10, and the other measuring block 40 is located inside the diagonal line.

[0036] Here, a connection hole can also be made on the measuring block 40, so that bolts or the like can be inserted to connect and fix it to the base plate 10.

[0037] Example 2

[0038] like Figure 4 As shown, this fixture can also clamp the exhaust end housing 102 of the vacuum pump. The method of use is the same as in Example 1, so that one fixture can be used to clamp two housings.

[0039] 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 clamping fixture for mounting a housing, wherein the outer surface of the housing has a plurality of stepped surfaces; characterized in that, include: A substrate having four corner portions; A clamping assembly is provided at the corner, the clamping assembly includes two clamping units arranged at an angle of 60°-100°, the clamping units are used to press against the step surface, and the clamping units can make lifting and lowering movements; A positioning assembly is provided at the corner, the positioning assembly including two positioning units located on the front side of the clamping unit, the positioning units being positioned below the housing, and the positioning units being height adjustable.

2. The clamp for a machine housing according to claim 1, characterized in that: The clamping unit includes a support part, a guide part, and a pressing part; The support includes a first connecting ring disposed on the substrate, a first adjusting rod screwed into the first connecting ring, and a first adjusting rotating body screwed onto the first adjusting rod; The guide portion includes a second connecting ring disposed on the substrate, a second adjusting rod screwed into the second connecting ring, and a second adjusting rotating body screwed onto the second adjusting rod; The pressing part includes a pressure plate, one end of which is rotatably connected to a first adjusting rod. The first adjusting rotating body is located below the pressure plate, and the other end of the pressure plate is connected to a second adjusting rod. The second adjusting rotating body is located above the pressure plate, and the pressure plate can move up and down on the first adjusting rod and the second adjusting rod.

3. A clamp for a machine housing according to claim 1, characterized in that: The positioning unit includes a third connecting ring disposed on the substrate, and a positioning member is screwed onto the third connecting ring. The positioning member can move within the third connecting ring and adjust its height. The positioning member abuts against the lower end face of the housing.

4. A clamp for a machine housing according to claim 1, characterized in that: It also includes a measuring component disposed at the corner, the measuring component comprising two measuring blocks, each measuring block having multiple flat measuring surfaces, and at least one measuring surface being disposed parallel to the side of an adjacent substrate, the measuring blocks being used by a depth gauge to measure the distance between the outer side of the housing and the measuring blocks.

5. A clamp for a machine housing according to claim 4, characterized in that: One of the measuring blocks is located on one diagonal of the substrate, and the other measuring block is located inside the diagonal.

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