Clamp for plug valve machining

Abstract

The invention discloses a clamp for plug valve machining, and relates to the technical field of plug valve machining. The device comprises a seat body and a plug valve body, a first driving assembly is arranged on the seat body, a first clamping plate is fixedly installed on the surface of a movable part of the first driving assembly, transverse frames are fixedly installed on the two side walls of the movable part of the first driving assembly, and the surfaces of the transverse frames are movably sleeved with second clamping plates; a second driving assembly is arranged on the surface of the base body, and a moving part of the second driving assembly is fixedly connected with the end of the second clamping plate. According to the clamping device, the first clamping plate and the second clamping plate are driven by the first driving assembly to move so that the plug valve body can be clamped, the second clamping plate is driven by the second driving assembly to move so that a step on the end face of the second clamping plate can be attached to the flange end face of the plug valve body, and the plug valve body can be axially clamped and fixed; the plug valve body clamping device is used for clamping and fixing plug valve bodies of different sizes.

Description

Technical Field

[0001] This invention relates to the field of plug valve processing technology, and more specifically to a fixture for processing plug valves. Background Technology

[0002] In the machining process of plug valves, fixtures are one of the key tools for achieving high-precision machining.

[0003] Traditional fixture designs can only accommodate valve bodies of a single size and cannot be flexibly adjusted to accommodate valve bodies of different sizes. This results in the need to frequently change fixtures when machining valves of various specifications, increasing machining costs and time. The flange end face of the plug valve body needs to be precisely fixed during the machining process, but traditional fixtures often lack effective axial clamping function, which cannot ensure the stability of the valve body during the machining process and is prone to machining errors.

[0004] Therefore, a fixture for machining plug valves is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a fixture for machining plug valves in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution: A jig for machining a plug valve includes a seat and a plug valve body. A first drive assembly is provided on the seat. A first clamping plate is fixedly installed on the surface of the movable part of the first drive assembly. Crossbars are fixedly installed on both sides of the movable part of the first drive assembly. A second clamping plate is movably sleeved on the surface of the crossbars. A second drive assembly is provided on the surface of the seat, and the movable part of the second drive assembly is fixedly connected to the end of the second clamping plate. A step is provided on the surface of the second clamping plate.

[0007] Furthermore, the base includes a connecting plate, the surface of which has through holes for connection with the spindle of the processing equipment via bolts. Two sets of side plates are fixedly installed on the surface of the connecting plate, and a reference platform is fixedly installed between the two sets of side plates for fitting the valve body of the positioning plug valve.

[0008] Furthermore, the first drive assembly includes two sets of first through slots opened on the reference platform, and a first bidirectional threaded rod is rotatably inserted into the surface of the two sets of side plates. The end of the first bidirectional threaded rod is provided with a first internal hexagonal recess, which is rotated by inserting a hexagonal wrench. Two sets of movable frames are threaded on the surface of the first internal hexagonal recess, and a first clamping plate and a crossbeam are arranged on the movable frames.

[0009] Furthermore, the two sets of movable frames are slidably arranged within the two sets of first through slots.

[0010] Furthermore, the second drive assembly includes a second through groove formed on the surface of the side plate, and a second bidirectional threaded rod is rotatably inserted into both sides of the second through groove and on the side plate. The two ends of the second bidirectional threaded rod are respectively provided with second internal hexagonal recesses. Two sets of movable blocks are threadedly fitted on the surface of the second bidirectional threaded rod, and guide rods are movably inserted into the movable blocks. The ends of the guide rods are fixedly connected to the end face of the second clamping plate.

[0011] Furthermore, the movable block has grooves at both ends, and the inner walls of the other two sides of the second through groove are provided with protrusions, and the grooves at both ends of the movable block and the protrusions on the second through groove are slidably arranged.

[0012] Furthermore, the end faces of the first clamping plate, the second clamping plate, and the step are arranged in an arc shape. When the valve body of the plug valve is fixed, the ends of the first clamping plate, the second clamping plate, and the step are in contact with the surface of the valve body of the plug valve.

[0013] Furthermore, the end face of the step is fitted to the flange end face of the plug valve body to provide lateral clamping for the plug valve body.

[0014] The beneficial effects of this invention are as follows: The first driving component drives the first clamping plate and the second clamping plate to move, thereby clamping the valve body of the plug valve. The second driving component drives the second clamping plate to move, so that the step on the end face of the second clamping plate fits with the flange end face of the plug valve body, thereby axially clamping and fixing the plug valve body. This method is used to clamp and fix plug valve bodies of different sizes. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a front view of the present invention; Figure 4 This is a schematic diagram of the present invention without clamping the valve body of the plug valve; Figure 5 This is the present invention. Figure 4 Rear sectional view; Figure 6 This is a partial schematic diagram of the present invention; Figure 7 This is the present invention. Figure 6 Exploded view; Figure 8 This is a schematic diagram of the movable frame of the present invention; Reference numerals: 1. Base; 101. Connecting plate; 102. Side plate; 103. Reference platform; 2. Plug valve body; 3. First drive assembly; 301. First through groove; 302. First bidirectional threaded rod; 303. First internal hexagonal recess; 304. Movable frame; 4. First clamping plate; 5. Second drive assembly; 501. Second through groove; 502. Second bidirectional threaded rod; 503. Second internal hexagonal recess; 504. Movable block; 505. Guide rod; 6. Crossbar; 7. Second clamping plate; 71. Step. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0018] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0020] like Figures 1 to 8 As shown, a jig for machining a plug valve includes a seat 1 and a plug valve body 2; Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, specifically, the base 1 includes a connecting plate 101. The surface of the connecting plate 101 has a through hole, which is bolted to be connected to the spindle of the processing equipment. Two sets of side plates 102 are fixedly installed on the surface of the connecting plate 101, and a reference platform 103 is fixedly installed between the two sets of side plates 102 for fitting the positioning plug valve body 2.

[0021] More specifically, the connecting plate 101 is connected to the spindle of the machining equipment by bolts matching the through holes on its surface, or the connecting plate 101 is clamped by a triangular chuck, and can be fixed to a lathe. The reference platform 103 fixed between the two sets of side plates 102 is used to fit the positioning plug valve body 2.

[0022] A first drive assembly 3 is provided on the base 1. A first clamping plate 4 is fixedly installed on the surface of the movable part of the first drive assembly 3. A crossbeam 6 is fixedly installed on both side walls of the movable part of the first drive assembly 3. A second clamping plate 7 is movably sleeved on the surface of the crossbeam 6. Figure 4 and Figure 5 As shown, specifically, the first drive assembly 3 includes two sets of first through slots 301 opened on the reference platform 103. The surfaces of the two sets of side plates 102 are rotatably connected to first bidirectional threaded rods 302. The ends of the first bidirectional threaded rods 302 are provided with first internal hexagonal recesses 303. A hexagonal wrench is inserted to rotate the first internal hexagonal recesses 303. The surface of the first internal hexagonal recesses 303 is threaded with two sets of movable frames 304. The first clamping plate 4 and the crossbeam 6 are arranged on the movable frames 304.

[0023] More specifically, by inserting a hex wrench into the first internal hexagonal recess 303 and rotating it, the first bidirectional threaded rod 302 is driven to rotate. By rotating the first bidirectional threaded rod 302, the two sets of movable frames 304 slide along the first through groove 301. The movable frames 304 then drive the first clamping plate 4 and the second clamping plate 7 to move laterally, thereby clamping or releasing the valve body 2 of the plug valve through the first clamping plate 4 and the second clamping plate 7.

[0024] like Figure 4 and Figure 5 As shown, in some practical applications, the two sets of movable frames 304 are slidably arranged in the two sets of first through slots 301.

[0025] More specifically, when the first bidirectional threaded rod 302 rotates, the movable frame 304 can slide along the first through groove 301 to ensure the linearity and stability of the clamping action. This sliding arrangement enables the movable frame 304 to accurately clamp the valve body 2 of the plug valve.

[0026] A second drive assembly 5 is provided on the surface of the base 1, and the moving part of the second drive assembly 5 is fixedly connected to the end of the second clamping plate 7. The surface of the second clamping plate 7 is provided with a step 71; for example Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, specifically, the second drive assembly 5 includes a second through groove 501 formed on the surface of the side plate 102, and a second bidirectional threaded rod 502 is rotatably inserted into both sides of the second through groove 501 and located on the side plate 102. The two ends of the second bidirectional threaded rod 502 are respectively provided with second internal hexagonal recesses 503. Two sets of movable blocks 504 are threadedly sleeved on the surface of the second bidirectional threaded rod 502, and guide rods 505 are movably inserted into the movable blocks 504. The end of the guide rod 505 is fixedly connected to the end face of the second clamping plate 7.

[0027] More specifically, the second bidirectional threaded rod 502 is driven to rotate by a hex wrench. By rotating the second bidirectional threaded rod 502, the two sets of movable blocks 504 slide along the second through groove 501, which drives the second clamping plate 7 to move. The steps 71 on the surface of the second clamping plates 7 on both sides are in contact with the end face of the flange of the plug valve body 2, thereby achieving axial clamping or release of the plug valve body 2.

[0028] like Figure 5 , Figure 6 and Figure 7 As shown, in some practical applications, grooves are provided at both ends of the movable block 504, and protrusions are provided on the inner walls of the other two sides of the second through groove 501. The grooves at both ends of the movable block 504 and the protrusions on the second through groove 501 are slidably arranged.

[0029] More specifically, the sliding of the grooves at both ends of the movable block 504 and the protrusions on the second through groove 501 limits the lateral movement of the movable block 504 within the second through groove 501.

[0030] In some practical applications, the end faces of the first clamping plate 4, the second clamping plate 7, and the step 71 are arranged in an arc shape. When the valve body 2 of the plug valve is fixed, the ends of the first clamping plate 4, the second clamping plate 7, and the step 71 are in contact with the surface of the valve body 2 of the plug valve.

[0031] More specifically, when the valve body 2 of the plug valve is fixed, the ends of its first clamping plate 4, second clamping plate 7 and step 71 are in close contact with the surface of the valve body 2 to form a close clamping, which can better adapt to the shape of the valve body 2 and ensure that the clamping force is evenly distributed.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, specifically, the end face of step 71 is fitted to the flange end face of the plug valve body 2 to clamp the plug valve body 2 laterally.

[0033] More specifically, the step 71 on the surface of the second clamping plate 7 achieves a stable clamping of the flange end face of the plug valve body 2, which can effectively and stably fix the plug valve body 2.

[0034] In summary: When clamping the plug valve body 2, the bottom end of the plug valve body 2 is positioned and attached to the seat 1. The first driving assembly 3 drives the first clamping plate 4 and the second clamping plate 7 to move, thereby clamping the plug valve body 2. The second driving assembly 5 drives the second clamping plate 7 to move, so that the step 71 on the end face of the second clamping plate 7 is attached to the flange end face of the plug valve body 2, thereby achieving axial clamping and fixing of the plug valve body 2. This method can be used to clamp and fix plug valve bodies 2 of different sizes.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A fixture for machining a plug valve, characterized in that, The device includes a seat (1) and a plug valve body (2). A first drive assembly (3) is provided on the seat (1). A first clamping plate (4) is fixedly installed on the surface of the movable part of the first drive assembly (3). A crossbeam (6) is fixedly installed on both sides of the movable part of the first drive assembly (3). A second clamping plate (7) is movably sleeved on the surface of the crossbeam (6). A second drive assembly (5) is provided on the surface of the seat (1). The moving part of the second drive assembly (5) is fixedly connected to the end of the second clamping plate (7). A step (71) is provided on the surface of the second clamping plate (7).

2. The fixture for machining a plug valve according to claim 1, characterized in that, The base (1) includes a connecting plate (101). The surface of the connecting plate (101) has a through hole, which is bolted to connect to the spindle of the processing equipment. Two sets of side plates (102) are fixedly installed on the surface of the connecting plate (101), and a reference platform (103) is fixedly installed between the two sets of side plates (102) for fitting the valve body (2) of the positioning plug valve.

3. A fixture for machining a plug valve according to claim 2, characterized in that, The first drive assembly (3) includes two sets of first through slots (301) opened on the reference platform (103). The surfaces of the two sets of side plates (102) are rotatably connected to a first bidirectional threaded rod (302). The end of the first bidirectional threaded rod (302) is provided with a first internal hexagonal recess (303). A hexagonal wrench is inserted to rotate the first internal hexagonal recess (303). The surface of the first internal hexagonal recess (303) is threaded with two sets of movable frames (304). The first clamping plate (4) and the crossbar (6) are arranged on the movable frame (304).

4. A jig for machining a plug valve according to claim 3, characterized in that, The two sets of movable frames (304) are slidably arranged in the two sets of first through slots (301).

5. A jig for machining a plug valve according to claim 2, characterized in that, The second drive assembly (5) includes a second through groove (501) opened on the surface of the side plate (102), and a second bidirectional threaded rod (502) is rotatably inserted into the two side walls of the second through groove (501) and located on the side plate (102). The two ends of the second bidirectional threaded rod (502) are respectively provided with second internal hexagonal recesses (503). Two sets of movable blocks (504) are threaded on the surface of the second bidirectional threaded rod (502), and a guide rod (505) is movably inserted into the movable block (504). The end of the guide rod (505) is fixedly connected to the end face of the second clamping plate (7).

6. A jig for machining a plug valve according to claim 5, characterized in that, The movable block (504) has grooves at both ends, and the inner walls of the other two sides of the second through groove (501) are provided with protrusions. The grooves at both ends of the movable block (504) and the protrusions on the second through groove (501) are slidably arranged.

7. A fixture for machining a plug valve according to claim 1, characterized in that, The end faces of the first clamping plate (4), the second clamping plate (7) and the step (71) are arranged in an arc shape. When the valve body (2) of the plug valve is fixed, the ends of the first clamping plate (4), the second clamping plate (7) and the step (71) are in contact with the surface of the valve body (2).

8. A jig for machining a plug valve according to claim 7, characterized in that, The end face of the step (71) is fitted to the flange end face of the plug valve body (2) for laterally clamping the plug valve body (2).

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