Clamping tool for pump side cover

Abstract

The utility model provides a clamping tool for a pump side cover, and aims to solve the technical problem that the machining precision is influenced by a clamping mode in the process of machining the side cover of a roots pump. The tool comprises an outer frame, the bottom and the two side portions of the outer frame are each of a straight plate type structure, and the two sides of the outer frame are each provided with a first threaded hole and a connecting groove; one side face of each clamping plate is rotationally connected with a first screw rod, and the first screw rods are arranged in the first threaded holes in a matched mode; the two ends of the positioning plate are detachably arranged in the two connecting grooves in the two sides of the outer frame respectively; the cover plate is detachably connected to the top of the outer frame, and a through hole is formed in the cover plate; the top face of the pressing plate is rotationally connected with a second screw rod, the second screw rod penetrates through the through hole, the second screw rod is provided with a locking nut in a matched mode, and the locking nut is located below the pressing plate. The tool has the advantages that clamping is stable, and the machining precision is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to a tooling fixture, in particular to a clamping tooling for a pump side cover. Background Art

[0002] The side cover of a Roots pump, as Figure 3 shown, has a front side and a rear side, with semi-circular structures on its left and right sides respectively, flat surfaces on its top and bottom respectively, and support feet at its bottom.

[0003] During the processing of the side cover of a Roots pump, the processing accuracy requirements for its front side and rear side are relatively high. Therefore, it is necessary to accurately position the side cover to meet the requirements of high-precision processing of the front and rear sides.

[0004] Currently, in the prior art, when positioning the side cover, the side cover is clamped through support points. During the clamping process, in order to avoid the support points deforming the outer contour of the side cover, the clamping pressure cannot be too large. As a result, when processing, the side cover is affected by the force of the tool and is prone to small displacements, affecting the processing accuracy. Summary of the Utility Model

[0005] Aiming at the technical problem that the processing accuracy is affected by the clamping method during the processing of the side cover of a Roots pump, the utility model provides a clamping tooling for a pump side cover, which has the advantages of stable clamping and avoiding the influence on the processing accuracy.

[0006] The technical solution of the utility model is as follows:

[0007] A clamping tooling for a pump side cover, comprising:

[0008] An outer frame, with straight plate structures at its bottom and both side parts, and first threaded holes and connecting grooves are provided on both sides of the outer frame;

[0009] Two clamping plates, on one side of each clamping plate, a first screw rod is rotatably connected, and the first screw rod is matched in the first threaded hole;

[0010] A positioning plate, with both ends detachably arranged in two connecting grooves on both sides of the outer frame;

[0011] A cover plate, detachably connected to the top of the outer frame, and a through hole is provided on the cover plate;

[0012] A pressing plate, with a second screw rod rotatably connected to its top surface, the second screw rod passes through the through hole, and a locking nut is matched on the second screw rod, and the locking nut is located below the pressing plate.

[0013] Optionally, guide holes are further provided around the first threaded hole, and guide rods matching the guide holes are also provided on the clamping plates, and the guide rods are arranged parallel to the first screw rod.

[0014] Optionally, both ends of the positioning plate are respectively provided with second threaded holes, bolts are fitted in the second threaded holes, and the bolts pass through the connecting grooves.

[0015] Optionally, four of the connecting grooves are provided on the same side of the outer frame.

[0016] Optionally, connecting holes are provided at both ends of the cover plate, third screws that can pass through the connecting holes are respectively provided at the tops of both sides of the outer frame, and connecting nuts are fitted on the third screws.

[0017] Optionally, the clamping plates are of an arc-shaped structure, and the concave sides of the two clamping plates are arranged opposite to each other.

[0018] Optionally, a support plate is provided at the middle position of the bottom of the outer frame, the support plate is located directly below the pressing plate and is arranged parallel to the pressing plate.

[0019] Optionally, a polygonal handle structure is provided on the side of the first screw away from the clamping plate.

[0020] Optionally, two kidney-shaped holes are provided at the bottom of the outer frame.

[0021] Compared with the prior art, the beneficial effects of the present utility model are:

[0022] First threaded holes are respectively provided on both sides of the outer frame, and first screws are respectively fitted in the two first threaded holes. When clamping, first place the support feet at the bottom of the side cover on the bottom of the outer frame. By rotating the locking nut on the second screw, the pressing plate descends, and the side cover is pressed tightly inside the outer frame from the top of the side cover. Then, by driving the first screw, the two clamping plates approach each other and are pressed tightly on the left and right semi-circular structures of the side cover from both sides. Finally, both ends of the positioning plate are fixed on both sides of the outer frame, and the positioning plate is closely attached to the front side or the rear side of the side cover, so as to process the other side of the side cover.

[0023] In this technical solution, the side cover is pressed tightly from multiple directions, so that the side cover can remain stationary during the processing, thereby ensuring the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a front view structural schematic diagram of the present utility model;

[0026] Figure 2 is a three-dimensional structural schematic diagram of the present utility model;

[0027] Figure 3 is a three-dimensional structural schematic diagram of the side cover. Specific embodiments

[0028] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of the present utility model are usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0031] The embodiments of the present utility model will be described in detail below with reference to the drawings.

[0032] Embodiment:

[0033] A clamping tooling for the pump side cover is used for clamping the side cover 15 as shown in Figure 3 Specifically, referring to Figure 1 and Figure 2 , the tooling includes an outer frame 1, a clamping plate 2, a first screw 3, a positioning plate 4, a cover plate 5, a pressing plate 6, and a second screw 7.

[0034] Among them, the outer frame 1 includes three straight plates. The three straight plates are connected end to end and form a U-shaped structure. The straight plates on both sides of the outer frame 1 are arranged vertically, and the straight plate at the bottom of the outer frame 1 is located on the horizontal plane.

[0035] A first threaded hole and a connection groove 8 are respectively arranged on the straight plates on both sides of the outer frame 1. The first threaded holes and the connection grooves 8 on the two straight plates on both sides of the outer frame 1 are symmetrically distributed.

[0036] A first screw rod 3 is respectively arranged on the straight plates on both sides of the outer frame 1. The first screw rod 3 is matched with the first threaded hole. A clamping plate 2 is rotatably arranged at one end of the first screw rod 3, and the clamping plate 2 is located between the straight plates on both sides of the outer frame 1.

[0037] Both ends of the positioning plate 4 are detachably arranged in the connection grooves 8 on both sides of the outer frame 1. The plate surface of the positioning plate 4 is arranged vertically, and the length direction of the positioning plate 4 is arranged horizontally.

[0038] The cover plate 5 is also a straight plate. The length of the cover plate 5 is equal to the length of the straight plate at the bottom of the outer frame 1. Both ends of the cover plate 5 are detachably arranged at the tops of the straight plates on both sides of the outer frame 1. And a through hole is arranged in the middle of the cover plate 5.

[0039] A second screw rod 7 is movably arranged in the through hole in the middle of the cover plate 5. The length direction of the second screw rod 7 is arranged vertically, and one end of the second screw rod 7 is rotatably connected with a pressing plate 6. The pressing plate 6 is located below the cover plate 5.

[0040] In addition, a locking nut 9 is fitted on the second screw rod 7, and the locking nut 9 is also located below the pressing plate 6.

[0041] In this embodiment, during clamping, first place the support feet at the bottom of the side cover 15 on the bottom of the outer frame 1. By rotating the locking nut 9 on the second screw rod 7, the pressing plate 6 descends, and the locking nut 9 abuts against the cover plate 5, so that the pressing plate 6 is pressed against the top of the side cover 15 through the cover plate 5.

[0042] Then drive the first screw rod 3 to make the two clamping plates 2 approach each other and press tightly against the left and right semi-circular structures of the side cover 15 from both sides. Finally, fix both ends of the positioning plate 4 on both sides of the outer frame 1 and make the positioning plate 4 closely abut against the front side or the rear side of the side cover 15, so as to process the other side of the side cover 15.

[0043] In this technical solution, the side cover 15 is pressed from multiple directions, so that the side cover 15 can remain stationary during the processing, thereby ensuring the processing accuracy.

[0044] In one specific embodiment:

[0045] On the straight plates on both sides of the outer frame 1, guide holes are respectively provided. The guide holes are located around the first threaded holes. Generally, one guide hole is provided above and below the first threaded hole respectively. A guide rod 10 is movably arranged in each guide hole, and the guide rod 10 is fixedly arranged on the clamping plate 2.

[0046] That is to say, a first screw rod 3 and two guide rods 10 are rotatably arranged on each clamping plate 2.

[0047] In this embodiment, by setting the matching of the guide rod 10 and the guide hole, when the first screw rod 3 rotates, the clamping plate 2 will not rotate and will only move along the length direction of the second screw rod 7.

[0048] In another specific embodiment:

[0049] Second threaded holes are respectively provided at both ends of the positioning plate 4. All the second threaded holes match a bolt 11, and the bolt 11 passes through the connecting groove 8. And the size of the nut of the bolt 11 is larger than the width of the connecting groove 8.

[0050] In this embodiment, the positioning plate 4 can be fixed on the outer frame 1 through the bolt 11.

[0051] In another specific embodiment:

[0052] Four connecting grooves 8 are respectively provided on the straight plates on both sides of the outer frame 1. The length directions of the four connecting grooves 8 on the same side of the outer frame 1 are the same and are respectively close to both sides of the corresponding straight plate.

[0053] Correspondingly, two second threaded holes are provided at the end of the positioning plate 4.

[0054] In this embodiment, by setting two second threaded holes to fix the positioning plate 4 on the outer frame 1, it can be ensured that when the positioning plate 4 is installed, the plate surface of the positioning plate 4 is in the vertical plane.

[0055] In another specific embodiment:

[0056] Connection holes are provided at both ends of the cover plate 5. Third screw rods 12 that can pass through the connection holes are respectively provided at the tops of both sides of the outer frame 1. And connection nuts are matched on the third screw rods 12. The third screw rods 12 are arranged in the vertical direction, and the connection nuts are located above the cover plate 5. The cover plate 5 is pressed against the tops of both sides of the outer frame 1 through the connection nuts.

[0057] In another specific embodiment:

[0058] The clamping plate 2 is of an arc structure. The concave sides of the two clamping plates 2 are arranged oppositely, and the inner sides of the two clamping plates 2 are set to be arc-shaped so that they can match the semi-circular structures on the left and right sides of the side cover 15, thereby increasing the friction between the clamping plate 2 and the side cover 15 and enhancing the clamping strength.

[0059] In another specific embodiment:

[0060] A support plate 13 is provided at the middle position of the bottom of the outer frame 1. The support plate 13 is located directly below the pressing plate 6 and is arranged parallel to the pressing plate 6. Through the cooperation of the support plate 13 and the pressing plate 6, the side cover 15 can be initially clamped inside the outer frame 1 to facilitate subsequent clamping on the left and right sides by the clamping plate 2.

[0061] In another specific embodiment:

[0062] On the side of the first screw rod 3 away from the clamping plate 2, a polygonal handle 14 structure is provided. By providing the handle 14, the first screw rod 3 can be conveniently rotated.

[0063] In another specific embodiment:

[0064] The bottom of the outer frame 1 has two kidney-shaped holes. By providing the two kidney-shaped holes, preliminary positioning can be performed according to the through holes at the bottom of the support feet of the side cover 15 to facilitate subsequent precise positioning by the pressing plate 6 and the clamping plate 2.

[0065] The above embodiments only represent the specific implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A clamping tool for a pump side cover, characterized in that: include: The outer frame has a bottom and two side portions which are both straight plate structures, and first threaded holes and connecting grooves are provided on both sides of the outer frame; Two clamping plates, one side of each clamping plate is rotatably connected with a first screw rod, and the first screw rod is matched in the first threaded hole; A positioning plate, both ends of which are detachably arranged in two connecting grooves on both sides of the outer frame; A cover plate, detachably connected to the top of the outer frame, wherein the cover plate is provided with a through hole; The top surface of the pressing plate is rotatably connected to a second screw rod, the second screw rod passes through the through hole, a locking nut is matched on the second screw rod, and the locking nut is located below the pressing plate.

2. The clamping fixture for the pump side cover according to claim 1, characterized in that: A guide hole is also provided around the first threaded hole, and a guide rod matching the guide hole is also provided on the clamping plate, and the guide rod is arranged parallel to the first screw rod.

3. The clamping fixture for the pump side cover according to claim 1, characterized in that: The two ends of the positioning plate are respectively provided with second threaded holes, and bolts are matched in the second threaded holes, and the bolts pass through the connecting grooves.

4. The clamping fixture for the pump side cover according to claim 1, characterized in that: Four connecting grooves are arranged on the same side of the outer frame.

5. The clamping fixture for the pump side cover according to claim 1, characterized in that: Both ends of the cover plate are provided with connection holes, and the tops of both sides of the outer frame are respectively provided with third screw rods that can pass through the connection holes, and the third screw rods are matched with connection nuts.

6. The clamping fixture for the pump side cover according to claim 1, characterized in that: The clamping plates are of arc-shaped structure, and the concave sides of the two clamping plates are arranged opposite to each other.

7. The clamping fixture for the pump side cover according to claim 1, characterized in that: A support plate is provided at the middle position of the bottom of the outer frame. The support plate is located directly below the pressing plate and is arranged parallel to the pressing plate.

8. The clamping fixture for the pump side cover according to claim 1, characterized in that: A polygonal handle structure is provided on one side of the first screw rod away from the clamping plate.

9. The clamping fixture for the pump side cover according to claim 1, characterized in that: The bottom of the outer frame is provided with two waist-shaped holes.

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