Roots pump motor side cover machining clamp

By designing a combined fixture of the frame and clamping components, the problem of low machining efficiency of the traditional Roots pump motor side cover is solved, and efficient completion of multi-faceted machining is achieved.

CN223368767UActive Publication Date: 2025-09-23NINGBO ULVAC MECHANICAL MFG CO LTD +1
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Patent Information

Application Number
CN202422614277.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-29
Publication Date
2025-09-23
Estimated Expiration
2034-10-29

AI Technical Summary

Technical Problem

The traditional method of machining the Roots pump motor side cover requires multiple workstations and fixtures, resulting in low machining efficiency.

Method used

A Roots pump motor side cover processing fixture is designed, which includes a frame, a support rod, a first clamping assembly and a second clamping assembly. The first clamping assembly and the horizontal and vertical parts are used to achieve multi-faceted processing of the motor side cover. The stable fixation of the motor side cover is achieved through the cooperation of the support rod and the extension rod.

Benefits of technology

The multi-faceted processing of the Roots pump motor side cover can be completed on the same tooling, thus improving the processing efficiency.

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Abstract

The utility model relates to the technical field of tool clamps, and discloses a lobe pump motor side cover machining clamp which is characterized by comprising a frame and two supporting rods formed on the inner side of the frame, first clamping assemblies are arranged on the two opposite sides of the frame, and the first clamping assemblies clamp lobe pump motor side covers in the length direction of the supporting rods. The first clamping assembly is matched with the transverse part, and limiting and clamping of the roots pump motor side cover in the horizontal direction are achieved. Limiting and clamping of the roots pump motor side cover in the vertical direction are achieved through the vertical part, so that the roots pump motor side cover is integrally fixed, the front face, the back face and the two side faces of the roots pump motor side cover can be machined on the same tool, and the machining efficiency is improved. When the Roots pump motor side cover is placed on the frame, the Roots pump motor side cover can be firstly placed on the two extension rods, and the two extension rods support the Roots pump motor side cover, so that the Roots pump motor side cover can be conveniently placed in the frame.
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Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, and more particularly to a fixture for machining a side cover of a Roots pump motor. Background Art

[0002] Roots vacuum pump is a rotary variable displacement vacuum pump without internal compression. There are two symmetrical rotors in the pump chamber. The rotor shapes are two-lobed, three-lobed and four-lobed. The two rotors rotate in opposite directions and are driven by the end shaft gears to rotate synchronously. The rotors do not contact each other.

[0003] It includes a motor side cover, which has a relatively complex shape. Traditional processing methods require three workstations and two to three sets of fixtures to complete, which is time-consuming and has low processing efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a Roots pump motor side cover processing fixture for improving processing efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a Roots pump motor side cover processing fixture, comprising a frame and two support rods formed on the inner side of the frame, processing holes are opened on opposite sides of the frame, and first clamping components are provided on opposite sides of the frame, and the first clamping components clamp the Roots pump motor side cover along the length direction of the support rods. A second clamping component is provided on the frame, and the second clamping component includes a transverse portion and a vertical portion, and the transverse portion clamps the Roots pump motor side cover along a direction perpendicular to the length direction of the support rods, and the vertical portion clamps the Roots pump motor side cover along the vertical direction.

[0006] As a further improvement of the present invention, extension rods are integrally formed on opposite sides of the frame, the extension rods coincide with the central axis of the corresponding support rods, and the outer diameter of the extension rods is greater than the outer diameter of the support rods.

[0007] As a further improvement of the present invention, the first clamping assembly includes a first screw and a first clamping piece, the first screw is rotatably connected to the frame, and the first screw is threadedly connected to the first clamping piece.

[0008] As a further improvement of the present invention, the first clamping assembly further includes a first set screw, and the first set screw is threadedly connected to the frame.

[0009] As a further improvement of the present invention, the first clamping assembly further includes a pull rod, a through hole is provided on the frame, and the pull rod passes through the through hole.

[0010] As a further improvement of the present invention, a groove is provided on the frame, a compression spring is arranged in the groove, a positioning ball is fixedly connected to one end of the compression spring close to the pull rod, and a positioning groove is provided on the side of the pull rod facing the positioning ball.

[0011] As a further improvement of the present invention, the first clamping assembly further includes a second screw and a second clamping piece, the second screw is rotatably connected to the bottom of the frame, and the second clamping piece is threadedly connected to the second screw.

[0012] As a further improvement of the present invention, the transverse portion includes a plurality of second set screws, the second set screws are threadedly connected to the frame, and the second set screws are arranged horizontally.

[0013] As a further improvement of the present invention, the vertical portion includes a plurality of third set screws, the third set screws are threadedly connected to the frame, and the third set screws are vertically arranged.

[0014] As a further improvement of the present invention, a plurality of support screws are threadedly connected to the bottom of the frame, and the support screws are vertically arranged.

[0015] The beneficial effects of the utility model are as follows: the first clamping assembly in the utility model cooperates with the transverse part to realize the limitation and clamping of the Roots pump motor side cover in the horizontal direction; the vertical part realizes the limitation and clamping of the Roots pump motor side cover in the vertical direction, thereby realizing the fixation of the Roots pump motor side cover as a whole, so that the front, back and two sides of the Roots pump motor side cover can be processed on the same tooling, thereby improving the processing efficiency; when the Roots pump motor side cover is placed on the frame, it can be placed on the two extension rods first, and the two extension rods form a support for the Roots pump motor side cover, which is convenient for placing the motor side cover into the frame. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the structure of the motor side cover in the utility model;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 4 It is a cross-sectional view of the utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle;

[0021] Figure 6It is a structural schematic diagram of the back of the utility model.

[0022] Figure numerals: 1. frame; 11. support rod; 12. machining hole; 13. extension rod; 14. groove; 15. compression spring; 16. positioning ball; 21. first screw; 22. first clamping member; 23. first set screw; 24. pull rod; 241. positioning groove; 25. second screw; 26. second clamping member; 3. second set screw; 4. third set screw; 5. motor side cover; 51. outer flange; 52. inner ring; 6. support screw. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0024] Reference Figures 1 to 6 As shown, a Roots pump motor side cover processing fixture of this embodiment includes a frame 1 and two support rods 11 formed on the inner side of the frame 1, wherein the frame 1 is detachably connected to the base, and the frame 1 and the base are connected by bolts. The arrangement of the frame 1 can facilitate the processing of the front and back sides of the Roots pump motor side cover 5;

[0025] The two support rods 11 are arranged parallel to each other in the horizontal direction, and the support rods 11 and the frame 1 are integrally formed; the support rods 11 form a support for the Roots pump motor side cover 5;

[0026] First clamping assemblies are provided on opposite sides of the frame 1. The first clamping assemblies clamp the Roots pump motor side cover 5 along the length direction of the support rod 11. That is, when the first clamping assembly clamps the Roots pump motor side cover 5, the direction of the clamping force applied to the Roots pump motor side cover 5 is parallel to the length direction of the support rod 11.

[0027] A second clamping assembly is provided on the frame 1. The second clamping assembly includes a transverse portion and a vertical portion. The transverse portion clamps the Roots pump motor side cover 5 in a direction perpendicular to the length direction of the support rod 11, and the vertical portion clamps the Roots pump motor side cover 5 in a vertical direction. The first clamping assembly cooperates with the transverse portion to achieve horizontal limitation and clamping of the Roots pump motor side cover 5.

[0028] The vertical portion realizes the limiting and clamping of the Roots pump motor side cover 5 in the vertical direction, thereby achieving the overall fixation of the Roots pump motor side cover 5;

[0029] Machining holes 12 are provided on opposite sides of the frame 1 to facilitate machining of the two side structures of the Roots pump motor side cover 5, so that the front, back and two sides of the Roots pump motor side cover 5 can be machined on the same tool, thereby improving machining efficiency.

[0030] Extension rods 13 are integrally formed on opposite sides of the frame 1. When placing the Roots pump motor side cover 5 on the frame 1, it can be placed on the two extension rods 13 first. The two extension rods 13 support the Roots pump motor side cover 5, making it easier to place the motor side cover 5 into the frame 1.

[0031] The central axis of the extension rod 13 coincides with the corresponding support rod 11 , and the outer diameter of the extension rod 13 is larger than the outer diameter of the support rod 11 , so that a drop is formed between the extension rod 13 and the support rod 11 , allowing the motor side cover 5 to slide easily onto the support rod 11 .

[0032] Reference Figure 1 and Figure 3 As shown, the first clamping assembly includes a first screw 21 and a first clamping piece 22. The first clamping piece 22 is L-shaped, one end of which can abut against the motor side cover 5. The middle part of the first clamping piece 22 is threadedly connected to the first screw 21. When the first screw 21 is rotated, the first clamping piece 22 can be moved and abut against the motor side cover 5, thereby clamping the motor side cover 5. The first screw 21 is rotatably connected to the frame 1, and the first screw 21 is threadedly connected to the first clamping piece 22.

[0033] Reference Figure 2 As shown, the motor side cover 5 includes an outer flange 51 and an inner ring 52 , wherein a side of the inner ring 52 facing the outer flange 51 abuts against the first clamping member 22 .

[0034] Reference Figure 3 As shown, the first clamping assembly also includes a first set screw 23, which is threadedly connected to the frame 1. By rotating the first set screw 23, the first set screw 23 can be abutted against the other end of the first clamping member 22, so that the two ends of the first clamping member 22 can be balanced and one end will not tilt due to excessive force.

[0035] The first clamping assembly also includes a pull rod 24. A through hole is formed on the frame 1, and the pull rod 24 passes through the through hole. The end of the pull rod 24 facing away from the motor side cover 5 is detachably connected to a ring, which facilitates the user to pull the pull rod 24.

[0036] Reference Figure 4 and Figure 5 As shown, the end of the pull rod 24 facing away from the circular ring abuts against the side of the outer flange 51 on the motor side cover 5 facing the inner ring 52, so that the pull rod 24 cooperates with the first clamping member 22 to clamp the motor side cover 5 along the length direction of the support rod 11.

[0037] The cross section of the through hole is rectangular, which prevents the pull rod 24 from rotating;

[0038] A groove 14 is provided on the frame 1. A continuous groove 14 can be provided on the frame 1 and one end thereof can be sealed with a set screw to facilitate installation of a compression spring 15.

[0039] A compression spring 15 is provided in the groove 14, and a positioning ball 16 is fixedly connected to one end of the compression spring 15 close to the pull rod 24. A positioning groove 241 is provided on the side of the pull rod 24 facing the positioning ball 16. The cooperation between the positioning ball 16 and the positioning groove 241 forms a certain positioning for the pull rod 24. When the pull rod 24 is not in use, it prevents the pull rod 24 from moving toward the inside of the frame 1, which causes the motor side cover 5 to move to the support rod 11 to form an obstruction.

[0040] The first clamping assembly also includes a second screw 25 and a second clamping piece 26. The second screw 25 is rotatably connected to the bottom of the frame 1. The second clamping piece 26 is threadedly connected to the second screw 25. The first clamping assembly is located at the bottom of the frame 1. The second clamping piece 26 is moved by rotating the second screw 25, so that the second clamping piece 26 can be abutted against the side of the inner ring 52 facing the outer flange 51, thereby increasing the clamping firmness of the motor side cover 5.

[0041] Reference Figure 6 As shown, the transverse portion includes a plurality of second set screws 3. In this embodiment, four second set screws 3 are provided. Two set screws are respectively provided on the two side surfaces of the frame 1. The second set screws 3 are threadedly connected to the frame 1. The second set screws 3 are arranged horizontally. By rotating the second set screws 3, they can be abutted against the outer flange 51. The four second set screws 3 interact with each other to clamp the motor side cover 5 laterally.

[0042] Among them, threaded holes can be directly opened on the frame 1 to be threadedly connected to the second set screw 3 and the third set screw 4; or connecting nuts can be fixed on the frame 1 to be threadedly connected to the second set screw 3 and the third set screw 4 through the nuts.

[0043] The vertical portion includes multiple third set screws 4. In this embodiment, two third set screws 4 are provided, one of which is against the top of the outer flange 51, and the other third set screw 4 is against the top of the inner ring 52; the third set screw 4 is threadedly connected to the frame 1, and the third set screw 4 is vertically arranged.

[0044] The bottom of the frame 1 is threadedly connected with a plurality of support screws 6, which are vertically arranged. In this embodiment, two support screws 6 are provided and located at the bottom of the frame 1 to support the motor side cover 5 and cooperate with the third set screw 4 to clamp the motor side cover 5 in the vertical direction.

[0045] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A Roots pump motor side cover processing fixture, characterized by: The invention comprises a frame (1) and two support rods (11) formed on the inner side of the frame (1), wherein machining holes (12) are provided on opposite sides of the frame (1), and first clamping assemblies are provided on opposite sides of the frame (1), wherein the first clamping assemblies clamp the Roots pump motor side cover (5) along the length direction of the support rods (11), and a second clamping assembly is provided on the frame (1), wherein the second clamping assembly comprises a transverse portion and a vertical portion, wherein the transverse portion clamps the Roots pump motor side cover (5) along a direction perpendicular to the length direction of the support rods (11), and the vertical portion clamps the Roots pump motor side cover (5) along a vertical direction.

2. A Roots pump motor side cover processing fixture according to claim 1, characterized in that: Extension rods (13) are integrally formed on opposite sides of the frame (1), the extension rods (13) coincide with the central axis of the corresponding support rods (11), and the outer diameter of the extension rods (13) is greater than the outer diameter of the support rods (11).

3. The Roots pump motor side cover processing fixture according to claim 1, characterized in that: The first clamping assembly comprises a first screw (21) and a first clamping piece (22), wherein the first screw (21) is rotatably connected to the frame (1), and the first screw (21) is threadedly connected to the first clamping piece (22).

4. A Roots pump motor side cover processing fixture according to claim 3, characterized in that: The first clamping assembly further comprises a first set screw (23), wherein the first set screw (23) is threadedly connected to the frame (1).

5. The Roots pump motor side cover machining fixture according to claim 3, characterized in that: The first clamping assembly further comprises a pull rod (24); a through hole is provided on the frame (1); and the pull rod (24) passes through the through hole.

6. The Roots pump motor side cover machining fixture according to claim 5, characterized in that: The frame (1) is provided with a groove (14), a compression spring (15) is provided in the groove (14), one end of the compression spring (15) close to the pull rod (24) is fixedly connected to a positioning ball (16), and a positioning groove (241) is provided on the side of the pull rod (24) facing the positioning ball (16).

7. The Roots pump motor side cover machining fixture according to claim 3, characterized in that: The first clamping assembly further comprises a second screw rod (25) and a second clamping member (26), wherein the second screw rod (25) is rotatably connected to the bottom of the frame (1), and the second clamping member (26) is threadedly connected to the second screw rod (25).

8. The Roots pump motor side cover machining fixture according to claim 1, characterized in that: The transverse portion comprises a plurality of second fastening screws (3), the second fastening screws (3) being threadedly connected to the frame (1), and the second fastening screws (3) being arranged horizontally.

9. The Roots pump motor side cover machining fixture according to claim 1, characterized in that: The vertical portion comprises a plurality of third set screws (4), the third set screws (4) are threadedly connected to the frame (1), and the third set screws (4) are vertically arranged.

10. The Roots pump motor side cover machining fixture according to claim 1, characterized in that: The bottom of the frame (1) is threadedly connected with a plurality of support screws (6), and the support screws (6) are arranged vertically.