A double-head handle ball end surface processing clamping tool

Abstract

The utility model provides a double-handle ball end surface processing clamping tool, which relates to the technical field of ball valve processing, including a fixed plate, a base is fixedly connected to the top of the fixed plate near the middle, a reference seat is fixedly connected to the top of the base near the middle, a positioning hole is provided on the top of the reference seat, and a slot is symmetrically provided on the outer surface of the base, a limit block is movably provided inside the slot, a first threaded rod is fixedly connected to the top of the limit block, and a connecting plate is movably sleeved on the outer surface of the first threaded rod. In the utility model, when processing the end face shaft handle on the sphere, the traditional fixed plate is changed to a reference seat, that is, a fixed plane, with the shaft handle on the sphere as the axis reference, and the large plane on the sphere as the plane reference, which can more effectively help correction, fast clamping, and can ensure the shape and position tolerance between the two end faces.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valve processing, in particular to a double-head handle ball end surface processing clamping tool. Background Art

[0002] A ball valve is a commonly used fluid control valve that can control the flow of fluid by rotating the ball. A ball valve usually consists of a hollow ball and two ports connected to the pipes. There is a hole in the middle of the ball. When the hole is aligned with the pipe, the fluid can pass through. When the ball is rotated 90 degrees, the hole is not aligned with the pipe and the fluid is blocked.

[0003] The double-handled ball is the most common form of fixed ball for ball valves. When processing the end handle of the ball, a fixed plate is usually used in combination with a locking pressure rod to tighten it, and a dial indicator is used for calibration before turning. The first end of the shaft handle of the ball is relatively easy to calibrate, but the second end is very difficult to calibrate, and the parallelism and coaxiality of the two end faces must be considered. If there is a slight deviation in the clamping correction, it will lead to excessive form and position tolerances and low clamping efficiency. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that when processing the second end of the sphere, it is difficult to correct the second end of the sphere using a fixed plate, which easily leads to excessive shape and position tolerances and low clamping efficiency, and a double-headed handle ball end surface processing clamping tool is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a double-headed handle ball end surface processing clamping tool, including a fixed plate, a base is fixedly connected to the top of the fixed plate near the middle position, a reference seat is fixedly connected to the top of the base near the middle position, a positioning hole is opened on the top of the reference seat, and a groove is symmetrically opened on the outer surface of the base, and a limit block is movably arranged inside the groove, a first threaded rod is fixedly connected to the top of the limit block, a connecting plate is movably sleeved on the outer surface of the first threaded rod, a pressure plate is symmetrically fixedly connected between the outer surfaces of the two connecting plates, a first gasket is arranged on the outer surface of the pressure plate, the outer surface of the first gasket is fitted with the inner wall of the valve hole, a clamping nut is threadedly connected to the outer surface of the first threaded rod near the top, and the bottom of the clamping nut is fitted with the top of the connecting plate.

[0006] Furthermore, a shaft handle is arranged inside the reference seat, a sphere is arranged on the top of the shaft handle, a large plane is arranged on the outer surface of the sphere near the bottom, and the large plane fits with the top of the reference seat.

[0007] Furthermore, a valve hole is formed through the outer surface of the sphere near the middle, and a surface to be processed is formed near the top of the outer surface of the sphere.

[0008] Furthermore, a plurality of first through holes are formed through the top of the fixing plate near the edge, and connecting bolts are movably arranged inside the first through holes.

[0009] Furthermore, a second through hole is formed through the top of the connecting plate near the outer side, and the second through hole cooperates with the first threaded rod. A threaded hole is formed through the top of the connecting plate near the inner side, and the internal thread of the threaded hole is connected to the second threaded rod.

[0010] Furthermore, a support plate is movably sleeved between the outer surfaces of the two second threaded rods, a support nut is threadedly connected to the outer surface of the second threaded rod at the bottom of the support plate, and a nut is fixedly connected to the top end of the second threaded rod.

[0011] Furthermore, a third through hole is symmetrically opened on the outer surface of the support plate near the edge, and the third through hole cooperates with the second threaded rod. A second gasket is provided near the middle of the top of the support plate, and the top of the second gasket fits with the inner top of the valve hole.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, when processing the end face shaft handle on the sphere, the traditional fixed plate is changed into a reference seat, that is, a fixed plane, with the shaft handle on the sphere as the axis reference and the large plane on the sphere as the plane reference, which can more effectively help correction, fast clamping, and can ensure the shape and position tolerance between the two end faces.

[0014] 2. In the utility model, by using the support nut to move the support plate upward, a supporting force can be applied to the inner top of the valve hole, thereby providing auxiliary support for the suspended portion below the processing surface and reducing the quality fluctuation caused by processing vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a double-head handle ball end surface processing clamping tooling is proposed for the utility model;

[0016] Figure 2 A partial structural schematic diagram of a double-handle ball end surface processing clamping tooling is provided for the utility model;

[0017] Figure 3 The utility model proposes a partial structural exploded diagram of a double-head handle ball end surface processing clamping tooling;

[0018] Figure 4 The utility model provides a schematic diagram of the ball structure of a double-headed handle ball end surface processing clamping tooling.

[0019] Legend: 1. Fixed plate; 11. First through hole; 12. Connecting bolt; 13. Base; 14. Reference seat; 15. Positioning hole; 16. Slot; 2. Sphere; 21. Plane; 22. Shaft handle; 23. Valve hole; 24. Surface to be processed; 3. Limit block; 31. First threaded rod; 32. Pressing nut; 4. Connecting plate; 41. Second through hole; 42. Threaded hole; 43. Pressing plate; 44. First gasket; 5. Second threaded rod; 51. Support nut; 52. Nut; 6. Support plate; 61. Third through hole; 62. Second gasket. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a double-head handle ball end surface processing clamping tool, including a fixed plate 1, a base 13 is fixedly connected to the top of the fixed plate 1 near the middle position, a reference seat 14 is fixedly connected to the top of the base 13 near the middle position, a positioning hole 15 is opened on the top of the reference seat 14, a card slot 16 is symmetrically opened on the outer surface of the base 13, a limit block 3 is movably arranged inside the card slot 16, a first threaded rod 31 is fixedly connected to the top of the limit block 3, a connecting plate 4 is movably sleeved on the outer surface of the first threaded rod 31, a pressure plate 43 is symmetrically fixedly connected between the outer surfaces of the two connecting plates 4, a first gasket 44 is arranged on the outer surface of the pressure plate 43, and the outer surface of the first gasket 44 is aligned with the valve The inner wall of the hole 23 fits together, the outer surface of the first threaded rod 31 is threadedly connected with a clamping nut 32 near the top, the bottom of the clamping nut 32 fits together with the top of the connecting plate 4, the interior of the reference seat 14 is provided with a shaft handle 22, the top of the shaft handle 22 is provided with a sphere 2, the outer surface of the sphere 2 is provided with a large plane 21 near the bottom, the large plane 21 fits together with the top of the reference seat 14, the outer surface of the sphere 2 is provided with a valve hole 23 near the middle, the outer surface of the sphere 2 is provided with a surface to be processed 24 near the top, the top of the fixed plate 1 is provided with a plurality of first through holes 11 near the edge, and the first through holes 11 are movably provided with connecting bolts 12 inside.

[0023] The effect achieved by the entire embodiment 1 is that the fixed plate 1 is installed to the connecting plate of the CNC lathe through the connecting bolts 12, and the reference seat 14 and the positioning hole 15 are calibrated. In order to ensure the accuracy, the reference seat 14 and the positioning hole 15 need to be re-processed, or pre-processed in place, and the reference seat 14 and the positioning hole 15 are calibrated during clamping, so that the axis of the reference seat 14 and the positioning hole 15 can be ensured to be consistent with the rotation axis of the machine tool, and then the sphere 2 with the large plane 21 and the shaft handle 22 processed is clamped. When clamping, the shaft handle 22 and the positioning hole 15 are aligned. The matching clearance is 0.02-0.03mm, the matching depth is more than 15-20mm, the large plane 21 is tightly matched with the reference plane on the reference seat 14, and then the limit block 3 is inserted into the slot 16 in turn, the pressure plate 43 is inserted into the valve hole 23, and the connecting plate 4 is connected to the first threaded rod 31 through the second through hole 41, and the pressure plate 43 is locked with the clamping nut 32, so that pressure can be applied to the inner wall of the valve hole 23, and the ball 2 can be fixed. By setting the first gasket 44, the pressure plate 43 can be prevented from crushing the inner wall of the valve hole 23.

[0024] Embodiment 2, as Figure 1-Figure 4 As shown, a second through hole 41 is penetrated through the top of the connecting plate 4 near the outer side, and the second through hole 41 cooperates with the first threaded rod 31. A threaded hole 42 is penetrated through the top of the connecting plate 4 near the inner side, and the second threaded rod 5 is threadedly connected to the internal thread of the threaded hole 42. A support plate 6 is movably sleeved between the outer surfaces of the two second threaded rods 5. A support nut 51 is threadedly connected to the outer surface of the second threaded rod 5 at the bottom of the support plate 6. A nut 52 is fixedly connected to the top of the second threaded rod 5. A third through hole 61 is symmetrically provided on the outer surface of the support plate 6 near the edge, and the third through hole 61 cooperates with the second threaded rod 5. A second gasket 62 is arranged near the middle of the top of the support plate 6, and the top of the second gasket 62 fits with the inner top of the valve hole 23.

[0025] The effect achieved by the entire embodiment 2 is that the second threaded rod 5 is connected to the connecting plate 4 through the threaded hole 42, and the support plate 6 is moved upward by using the support nut 51, so that a supporting force can be applied to the inner top of the valve hole 23, that is, auxiliary support can be provided for the suspended portion below the processing surface 24, thereby reducing the quality fluctuation caused by processing vibration. By setting the second gasket 62, the support plate 6 can be prevented from crushing the inner wall of the valve hole 23.

[0026] Working principle: When in use, the fixed plate 1 is installed to the connecting plate of the CNC lathe through the connecting bolts 12, and the reference seat 14 and the positioning hole 15 are calibrated. To ensure accuracy, the reference seat 14 and the positioning hole 15 need to be re-processed, or pre-processed in place, and the reference seat 14 and the positioning hole 15 are calibrated during clamping, so that the axis of the reference seat 14 and the positioning hole 15 can be ensured to be consistent with the rotation axis of the machine tool, and then the sphere 2 that has been processed with the large plane 21 and the shaft handle 22 is clamped. During clamping, the shaft handle 22 is matched with the positioning hole 15, the matching clearance is 0.02-0.03mm, the matching depth is more than 15-20mm, and the large plane 21 and the reference seat 14 are aligned. The reference plane is tightly matched, and then the limit block 3 is inserted into the slot 16 and the pressure plate 43 is inserted into the valve hole 23 in turn, and the connecting plate 4 is connected to the first threaded rod 31 through the second through hole 41, and the pressure plate 43 is locked by the clamping nut 32, so that pressure can be applied to the inner wall of the valve hole 23, and the ball 2 can be fixed, and then the second threaded rod 5 is connected to the connecting plate 4 through the threaded hole 42, and the support plate 6 is moved upward by the support nut 51, so that a supporting force can be applied to the inner top of the valve hole 23, so as to provide auxiliary support for the suspended part below the processing surface 24, reduce the quality fluctuation caused by processing vibration, and finally the processing surface 24 can be turned.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A double-handle ball end surface processing clamping tool, comprising a fixed plate (1), characterized in that: A base (13) is fixedly connected to the top of the fixed plate (1) near the middle position, a reference seat (14) is fixedly connected to the top of the base (13) near the middle position, a positioning hole (15) is provided on the top of the reference seat (14), a clamping groove (16) is symmetrically provided on the outer surface of the base (13), a limit block (3) is movably provided inside the clamping groove (16), a first threaded rod (31) is fixedly connected to the top of the limit block (3), a connecting plate (4) is movably sleeved on the outer surface of the first threaded rod (31), a pressure plate (43) is symmetrically fixedly connected between the outer surfaces of the two connecting plates (4), a first gasket (44) is provided on the outer surface of the pressure plate (43), the outer surface of the first gasket (44) is in contact with the inner wall of the valve hole (23), a clamping nut (32) is threadedly connected to the outer surface of the first threaded rod (31) near the top, and the bottom of the clamping nut (32) is in contact with the top of the connecting plate (4).

2. The double-handle ball end surface processing clamping tool according to claim 1 is characterized in that: The reference seat (14) is provided with an axial handle (22) inside, a sphere (2) is provided on the top of the axial handle (22), a large plane (21) is provided on the outer surface of the sphere (2) near the bottom, and the large plane (21) is in contact with the top of the reference seat (14).

3. The double-handle ball end surface processing clamping tool according to claim 2 is characterized in that: A valve hole (23) is provided through the outer surface of the sphere (2) near the middle, and a surface to be processed (24) is provided near the top of the outer surface of the sphere (2).

4. The double-handle ball end surface processing clamping tool according to claim 1 is characterized in that: A plurality of first through holes (11) are provided through the top of the fixing plate (1) near the edge, and connecting bolts (12) are movably arranged inside the first through holes (11).

5. The double-handle ball end surface processing clamping tool according to claim 1 is characterized in that: A second through hole (41) is provided through the top of the connecting plate (4) near the outer side, and the second through hole (41) cooperates with the first threaded rod (31). A threaded hole (42) is provided through the top of the connecting plate (4) near the inner side, and the second threaded rod (5) is connected to the inner thread of the threaded hole (42).

6. The double-handle ball end surface processing clamping tool according to claim 5 is characterized in that: A support plate (6) is movably sleeved between the outer surfaces of the two second threaded rods (5); a support nut (51) is threadedly connected to the outer surface of the second threaded rod (5) at the bottom of the support plate (6); and a nut (52) is fixedly connected to the top of the second threaded rod (5).

7. The double-handle ball end surface processing clamping tool according to claim 6 is characterized in that: A third through hole (61) is symmetrically provided on the outer surface of the support plate (6) near the edge, and the third through hole (61) cooperates with the second threaded rod (5). A second gasket (62) is provided on the top of the support plate (6) near the middle, and the top of the second gasket (62) fits with the inner top of the valve hole (23).

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