Pump valve casting edge polishing and positioning clamp

Abstract

The utility model discloses a pump valve casting edge polishing and positioning clamp, and relates to the technical field of clamps. The central motor is fixedly arranged on the outer wall of the left side of the central cylinder; the driving bevel gear is arranged in the central cylinder, and the driving bevel gear is sleeved and fixed on an output shaft of the central motor; driven bevel gears are arranged on the periphery of the driving bevel gear in a meshed mode, and fulcrum shafts are fixedly arranged in the driven bevel gears in a penetrating mode. The number of the supporting frames is four, the supporting frames are fixedly arranged on the inner ring wall of the center cylinder in an equal-fillet distribution mode, the supporting frames are of an L-shaped structure, the horizontal ends of the supporting frames are arranged on the outer side of the driven bevel gear, and the supporting shafts are arranged in the horizontal ends of the supporting frames in a screwed and penetrating mode through bearings. The four threaded rods are fixedly arranged at the outer ends of the supporting shafts respectively, the threaded rods are sleeved with threaded pipes in a screwed connection mode through threads, and the threaded pipes penetrate through the center cylinder and then are exposed out of the center cylinder. And the casting is positioned by clamping and jacking the inner groove of the casting, so that the stability of the casting during polishing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures, and particularly relates to a positioning fixture for edge grinding of pump valve castings. Background Art

[0002] When processing pump valve castings, edge grinding operations need to be performed. During the use of existing grinding devices, the pump valve castings are prone to shaking, which affects the grinding effect. Content of the Utility Model

[0003] The purpose of the utility model is to provide a positioning fixture for edge grinding of pump valve castings with a simple structure, reasonable design and convenient use, which positions the casting by clamping the inner groove of the casting to improve the stability of the casting during grinding.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions: It includes a central cylinder, and the central cylinder is inserted into a groove at one end of the casting;

[0005] It further includes:

[0006] A central motor, which is fixedly arranged on the left outer wall of the central cylinder and is connected to an external power supply; the output shaft of the central motor passes through the left wall of the central cylinder and is arranged inside the central cylinder;

[0007] A driving bevel gear, which is arranged inside the central cylinder and is sleeved and fixed on the output shaft of the central motor; driven bevel gears are meshed around the driving bevel gear, and a support shaft is inserted and fixed inside the driven bevel gear;

[0008] Four support frames, which are respectively and equally distributed and fixedly arranged on the inner ring wall of the central cylinder at equal round angles, and the support frames are arranged in an L-shaped structure. The horizontal ends of the support frames are arranged outside the driven bevel gears, and the support shafts are rotatably connected through bearings and inserted into the horizontal ends of the support frames;

[0009] Four threaded rods, which are respectively fixedly arranged at the outer ends of the support shafts. Threaded tubes are sleeved on the threaded rods by screw threads, and after passing through the central cylinder, the threaded tubes are exposed outside the central cylinder;

[0010] Through the above technical scheme design, when a driving bevel gear rotates, the four driven bevel gears rotate synchronously, so that the four threaded rods rotate synchronously to drive the threaded tubes, and the outer ends of the threaded tubes clamp the casting.

[0011] As a further improvement of the utility model, an outer end of the threaded tube is provided with a clamping platform, and the outer side of the clamping platform is arranged in an arc structure;

[0012] Through the above technical solution design, the clamping table clamps the casting.

[0013] As a further improvement of the present utility model, a support bearing is provided at the left end of the central cylinder, and the support bearing is arranged in the support block. A driving motor is provided on the left side of the support block, and the driving motor is arranged on the lower side of the central cylinder. The driving motor is connected to an external power supply; after the output shaft of the driving motor passes through the support block, a driving gear is provided, and a steering gear is meshed and arranged on the upper side of the driving gear. The steering gear is sleeved and fixed on the central cylinder;

[0014] Through the above technical solution design, the driving gear meshes and drives the steering gear to rotate, driving the central cylinder to rotate and changing the direction of the clamped casting.

[0015] The working principle of the present utility model: One end of the casting is sleeved on the right end of the central cylinder. Start the central motor, and the driving bevel gear rotates to make the four driven bevel gears rotate synchronously, so that the four threaded rods rotate synchronously to drive the threaded tube. The clamping table at the outer end of the threaded tube clamps the casting; during the grinding process, start the driving motor to make the driving gear rotate, and meshingly drive the steering gear to change the direction of the casting.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] 1. The four driven bevel gears rotate synchronously, making the threaded rods rotate synchronously, and then synchronously driving the threads to make the threaded tube move until the clamping table abuts against the inner wall of the casting to clamp the casting;

[0018] 2. The clamping table is adjusted by a threaded drive method, which is suitable for tightening castings with different inner diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the present utility model.

[0020] Figure 2 is Figure 1 the southeast isometric structural schematic diagram of

[0021] Figure 3 is a structural schematic diagram between the driving bevel gear and the driven bevel gear in the present utility model.

[0022] Figure 4 is a connection structural schematic diagram between the central cylinder and the support block in the present utility model.

[0023] Description of the reference numerals:

[0024] Central cylinder 1, casting 2, central motor 3, driving bevel gear 4, driven bevel gear 5, support frame 6, threaded rod 7, threaded tube 8, clamping table 9, support bearing 10, support block 11, driving motor 12, driving gear 13, steering gear 14. Specific implementation mode

[0025] The following will combine the accompanying drawings to clearly and completely describe the technical solutions in the present utility model. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model. Embodiment 1:

[0026] Please refer to Figures 1 - 4 , this embodiment includes a central cylinder 1, and the central cylinder 1 is inserted into a groove at one end of the casting 2;

[0027] It further includes:

[0028] A central motor 3, the central motor 3 is fixedly arranged on the left outer wall of the central cylinder 1 and is connected to an external power supply; the specific model of the central motor 3 is directly purchased, installed and used from the market according to actual use requirements; after the output shaft of the central motor 3 passes through the left side wall of the central cylinder 1, it is arranged inside the central cylinder 1;

[0029] A driving bevel gear 4, the driving bevel gear 4 is arranged inside the central cylinder 1, and the driving bevel gear 4 is sleeved and fixed on the output shaft of the central motor 3; driven bevel gears 5 are meshed around the driving bevel gear 4, and a support shaft is inserted and fixed inside the driven bevel gear 5;

[0030] A support frame 6, there are four support frames 6, which are respectively and equally fixed on the inner ring wall of the central cylinder 1 in a fillet distribution, and the support frame 6 is arranged in an L-shaped structure. The horizontal end of the support frame 6 is arranged outside the driven bevel gear 5, and the support shaft is rotatably connected through a bearing and inserted into the horizontal end of the support frame 6;

[0031] Threaded rods 7, there are four threaded rods 7, which are respectively fixed on the outer ends of the support shafts. Threaded tubes 8 are sleeved on the threaded rods 7 by threads, and after the threaded tubes 8 pass through the central cylinder 1, they are exposed outside the central cylinder 1; a clamping table 9 is arranged at the outer end of the threaded tube 8, and the outer side of the clamping table 9 is arranged in an arc-shaped structure;

[0032] Through the above technical solution design, the rotation of one driving bevel gear 4 causes the synchronous rotation of the four driven bevel gears 5, so that the four threaded rods 7 rotate synchronously to drive the threaded tubes 8, and the outer ends of the threaded tubes 8 clamp the casting 2. Embodiment 2:

[0033] Please refer to Figures 1 - 4, on the basis of Embodiment 1, a further improvement is made. A support bearing 10 is provided at the left end of the central cylinder 1, and the support bearing 10 is arranged in a support block 11. A drive motor 12 is provided on the left side of the support block 11, and the drive motor 12 is arranged on the lower side of the central cylinder 1. The drive motor 12 is connected to an external power supply; the specific model of the drive motor 12 is directly purchased, installed and used from the market according to actual usage requirements; after the output shaft of the drive motor 12 passes through the support block 11, a drive gear 13 is provided, and a steering gear 14 is meshed on the upper side of the drive gear 13. The steering gear 14 is sleeved and fixed on the central cylinder 1;

[0034] Through the design of the above technical solution, the drive gear 13 meshes with and drives the steering gear 14 to rotate, driving the central cylinder 1 to rotate and changing the direction of the clamped casting 2.

[0035] When using the present utility model, one end of the casting 2 is sleeved on the right end of the central cylinder 1. The central motor 3 is started, and the driving bevel gear 4 rotates to make the four driven bevel gears 5 rotate synchronously, so that the four threaded rods 7 rotate synchronously to drive the threaded tube 8. The clamping platform 9 at the outer end of the threaded tube 8 clamps the casting 2; during the grinding process, the drive motor 12 is started to make the drive gear 13 rotate, meshing and driving the steering gear 14 to change the direction of the casting 2.

[0036] Compared with the prior art, the beneficial effects of the present utility model are:

[0037] 1. The four driven bevel gears 5 rotate synchronously, making the threaded rods 7 rotate synchronously, and then driving them synchronously by threads, so that the threaded tube 8 moves until the clamping platform 9 abuts against the inner wall of the casting 2 to clamp the casting 2;

[0038] 2. The clamping platform 9 is adjusted by a threaded drive method, which is suitable for tightening castings 2 with different inner diameters.

[0039] For those skilled in the art, they can modify the technical solutions recorded in the foregoing embodiments and make equivalent replacements for some technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pump valve casting edge grinding and positioning fixture, comprising a center tube (1), wherein the center tube (1) is inserted into a groove at one end of the casting (2); It is characterized in that It also contains: A central motor (3), wherein the central motor (3) is fixedly arranged on the left outer wall of the central tube (1), and the central motor (3) is connected to an external power source; an output shaft of the central motor (3) passes through the left wall of the central tube (1) and is arranged inside the central tube (1); A driving bevel gear (4), wherein the driving bevel gear (4) is arranged in the central tube (1), and the driving bevel gear (4) is sleeved and fixed on the output shaft of the central motor (3); driven bevel gears (5) are meshedly arranged around the driving bevel gear (4), and a support shaft is passed through and fixed inside the driven bevel gear (5); Support frames (6), wherein the number of the support frames (6) is four, and the support frames (6) are respectively and evenly distributed and fixedly arranged on the inner ring wall of the central tube (1), and the support frames (6) are arranged in an L-shaped structure, the horizontal end of the support frame (6) is arranged on the outside of the driven bevel gear (5), and the support shaft is screwed through the horizontal end of the support frame (6) through a bearing; The threaded rods (7) are four in number and are respectively fixedly arranged at the outer ends of the support shafts. A threaded tube (8) is arranged on the threaded rods (7) through a threaded sleeve, and the threaded tube (8) passes through the central tube (1) and is exposed outside the central tube (1).

2. A pump valve casting edge grinding and positioning fixture according to claim 1, characterized in that: The outer end of the threaded tube (8) is provided with a clamping platform (9), and the outer side of the clamping platform (9) is provided with an arc-shaped structure.

3. The edge grinding and positioning fixture for pump and valve castings according to claim 1, characterized in that: A support bearing (10) is provided at the left end of the central tube (1), and the support bearing (10) is arranged in a support block (11). A drive motor (12) is provided on the left side of the support block (11), and the drive motor (12) is arranged at the lower side of the central tube (1), and the drive motor (12) is connected to an external power source; after the output shaft of the drive motor (12) passes through the support block (11), a drive gear (13) is provided, and a steering gear (14) is meshed with the upper side of the drive gear (13), and the steering gear (14) is sleeved and fixed on the central tube (1).

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