Clamp for milling and drilling of gear pump front cover

Abstract

This utility model discloses a fixture for milling and drilling gear pump front covers, relating to the field of gear pump front cover processing technology. It includes a first clamping frame, a second clamping frame, and a mounting box. A third and fourth clamping frame are provided above the mounting box. A clamping mechanism is provided at the upper end of the mounting box. A fixing post is fixedly provided at the bottom end of the mounting box. A rotating ring is rotatably mounted on the fixing post. The rotating ring is mounted on one end of a fixed cover. A rotating seat is fixedly provided at the bottom end of the fixed cover. A first adjusting mechanism is provided inside the fixed cover. A second adjusting mechanism is provided on the rotating shaft at one end of the rotating seat. This utility model, by setting up the clamping mechanism, facilitates the clamping and fixing of gear pump front covers of different sizes. The first adjusting mechanism allows adjustment of the horizontal machining angle of the gear pump front cover, and the second adjusting mechanism allows adjustment of the vertical machining angle of the gear pump front cover.

Description

Technical Field

[0001] This utility model relates to the field of gear pump front cover processing technology, specifically a fixture for milling and drilling gear pump front covers. Background Technology

[0002] As a key sealing and supporting component of the gear pump body, the machining accuracy of its inner wall shaft hole and other structures directly affects the assembly quality, sealing performance, and service life of the gear pump. Milling and drilling are core processes to ensure that these structures achieve the designed dimensions and positional accuracy. However, the overall structure of a gear pump is complex, and the front cover is usually irregularly shaped, containing bosses, grooves, and asymmetrical contours, making it difficult to achieve stable and reliable clamping and positioning directly on the operating table of a machining center or CNC machine tool. If the clamping is unstable or the positioning is inaccurate, it can easily lead to workpiece vibration and displacement during machining, seriously affecting key accuracy indicators such as the coaxiality, positional accuracy, and surface finish of the shaft hole.

[0003] The authorization announcement number is CN219925172U, which discloses a milling and drilling fixture for a gear pump front cover. This fixture, through the coordinated design of a fixed frame, a movable frame, and a fixing mechanism, achieves adaptive adjustment in the width direction of the front cover. The distance between the first and second fixing seats on the fixed frame can be adjusted according to the width of the front cover. One end of the workpiece is placed on it, and then the movable frame is slid according to the length of the workpiece, causing the fixing seat on it to press against the other end of the workpiece to complete the fixation. This design effectively solves the problem of clamping universality for front covers of different widths and lengths, eliminating the need to customize special clamping blocks for each size and improving the fixture's adaptability to changes in workpiece size.

[0004] However, its clamping mechanism mainly achieves the positioning and clamping of the workpiece in the X and Y directions in the horizontal plane, lacking the function of driving the workpiece to rotate around the axis or tilt at an angle. Since the gear pump front cover often needs to undergo multi-faceted and multi-angle milling, drilling, and other machining operations, when it is necessary to machine features that are not in the initial clamping position, this fixture cannot easily adjust the workpiece machining angle while it is clamped. The operator must completely release and remove the workpiece, readjust its posture, and re-clamp and position it. This process is not only cumbersome and inefficient, but more importantly, repeated clamping introduces unavoidable positioning errors, significantly reducing the consistency of the workpiece's machining accuracy.

[0005] Based on this, a fixture for milling and drilling the front cover of a gear pump is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0006] The purpose of this invention is to provide a fixture for milling and drilling the front cover of a gear pump, so as to solve the problem in the prior art that it is inconvenient to perform multi-angle machining after clamping the front cover of the pump.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A fixture for milling and drilling the front cover of a gear pump includes a first clamping frame, a second clamping frame, and a mounting box. The first and second clamping frames are symmetrically arranged. The first clamping frame is fixedly mounted on a first guide frame, and the second clamping frame is slidably mounted on the first guide frame. Both ends of the first guide frame are fixedly provided with first fixing plates. A third and fourth clamping frames are provided above the mounting box. The upper end of the mounting box is provided with a clamping mechanism for moving the second, third, and fourth clamping frames. A fixing column is fixedly provided at the bottom of the mounting box, and a rotating ring is rotatably mounted on the fixing column. The rotating ring is mounted on one end of a fixing cover. A rotating seat is fixedly provided at the bottom of the fixing cover, and the rotating seat is hinged to the inside of the fixing seat. The fixing seat is fixedly mounted on a mounting base plate. The inside of the fixing cover is provided with a first adjustment mechanism for adjusting the horizontal working angle of the mounting box, and a second adjustment mechanism is provided on the rotating shaft at one end of the rotating seat for adjusting the vertical working angle of the mounting box.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions: In one alternative embodiment: the clamping mechanism includes a first threaded rod and a second threaded rod. A first threaded block is fixedly provided at the bottom end of the second clamping frame. The first threaded block is fitted onto the first threaded rod. The first threaded rod is rotatably disposed between two first fixed plates. The first fixed plates are all fixedly disposed at the upper end of the mounting box. A limiting slide rod is fixedly provided on one side of both the first clamping frame and the second clamping frame. A limiting slip ring is slidably provided on each of the limiting slide rods. The third clamping frame and the fourth clamping frame are respectively symmetrically arranged with the first clamping frame and the second clamping frame. The two limiting slip rings are respectively fixedly disposed on the first clamping frame and the second clamping frame. The first clamp is fixed on one side of the third and fourth clamps. The third and fourth clamps are slidably mounted on the second guide frame. Both ends of the second guide frame are slidably mounted on the third guide frame. The third guide frame is fixed on the upper end of the mounting box. The bottom end of the third clamp is fixedly provided with a second threaded block. The second threaded block is fitted on a second threaded rod. One end of the second threaded rod is rotatably provided with a rotating block. The rotating block is fixed on the bottom end of the first clamp. The other end of the second threaded rod is rotatably provided with a second fixing plate. The second fixing plate is fixed on the upper end of the mounting box.

[0009] In one alternative: the first adjusting mechanism includes a first worm gear, a first fixed shaft is fixedly provided at the bottom end of the fixed column, the first worm gear is fixedly provided on the first fixed shaft, a first worm is meshed on the first worm gear, and the first worm is rotatably located inside the fixed cover.

[0010] In one alternative: the second adjusting mechanism includes a second worm gear, a second fixed shaft is fixedly mounted on a rotating shaft at one end of the rotating seat, a second worm gear is fixedly mounted on the second fixed shaft, a second worm is meshed on the second worm gear, the second worm is rotatably disposed inside the protective cover, the second worm gear is installed inside the protective cover, and the protective cover is fixedly mounted on the upper end of the mounting base plate.

[0011] In one alternative: a first pointer is fixedly mounted on one end of the second fixed shaft, a plurality of first scale lines are provided on one side of the protective cover, a second pointer is fixedly mounted on the fixed column, and a plurality of second scale lines are provided on the outer side of the rotating ring.

[0012] In one alternative: the mounting box has a mounting hole at its upper end, a partition net is fixedly installed inside the mounting hole, a protective railing is provided at the upper end of the mounting box corresponding to the position of the mounting hole, and a collection box is slidably installed inside the mounting box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, by setting a clamping mechanism, facilitates the clamping and fixing of gear pump front covers of different sizes. By setting a first adjustment mechanism, the horizontal machining angle of the gear pump front cover can be adjusted, and the second adjustment mechanism can adjust the vertical machining angle of the gear pump front cover. Therefore, when the mounting base plate is installed on the worktable of the drilling and milling machine, the gear pump front cover can be milled and drilled at multiple angles, thereby increasing the practicality of the gear pump front cover milling and drilling fixture. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of another aspect of the structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the installation of the first worm gear of this utility model.

[0017] Figure 4 This is a schematic diagram of the second guide frame structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the installation of the mesh of this utility model.

[0019] Figure reference numerals: 11 First clamping frame, 12 Second clamping frame, 13 Third clamping frame, 14 Fourth clamping frame, 15 First guide frame, 16 Mounting box, 17 First threaded rod, 18 Second threaded rod, 19 Second guide frame, 20 Third guide frame, 21 Partition net, 22 Collection box, 23 Fixed column, 24 Rotating ring, 25 Fixed cover, 26 First worm gear, 27 First worm, 28 Rotating seat, 29 Fixed seat, 30 Second worm gear, 31 Second worm, 32 Protective cover, 33 Mounting base plate, 34 Limiting slide bar, 35 Limiting slip ring. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] In one embodiment, such as Figures 1-5 As shown, the fixture for milling and drilling the front cover of a gear pump includes a first clamping frame 11, a second clamping frame 12, and a mounting box 16. The first clamping frame 11 and the second clamping frame 12 are symmetrically arranged. The first clamping frame 11 is fixedly mounted on a first guide frame 15, and the second clamping frame 12 is slidably mounted on the first guide frame 15. First fixing plates are fixed at both ends of the first guide frame 15. A third clamping frame 13 and a fourth clamping frame 14 are provided above the mounting box 16. The third clamping frame 13 and the fourth clamping frame 14 are symmetrically arranged with respect to the first clamping frame 11 and the second clamping frame 12, respectively. A clamping mechanism for moving the second clamping frame 12, the third clamping frame 13, and the fourth clamping frame 14 is provided at the upper end of the mounting box 16. A fixing post 23 is fixedly provided at the bottom end of the mounting box 16. A rotating ring 24 is provided, which is installed at one end of a fixed cover 25. A rotating seat 28 is fixed at the bottom of the fixed cover 25, and the rotating seat 28 is hinged to the inside of the fixed seat 29. The fixed seat 29 is fixed to the mounting base 33. The fixed cover 25 has a first adjustment mechanism for adjusting the horizontal working angle of the mounting box 16. A second adjustment mechanism for adjusting the vertical working angle of the mounting box 16 is provided on the rotating shaft at one end of the rotating seat 28. The clamping mechanism drives the second clamping frame 12, the third clamping frame 13, and the fourth clamping frame 14 to move, thereby clamping and fixing the front cover of the gear pump. The first adjustment mechanism can adjust the horizontal working angle of the mounting box 16, and the second adjustment mechanism can adjust the vertical working angle of the mounting box 16, thus facilitating multi-angle processing of the front cover of the gear pump. The clamping mechanism includes a first threaded rod 17 and a second threaded rod 18. A first threaded block is fixedly provided at the bottom end of the second clamping frame 12. The first threaded block is fitted onto the first threaded rod 17. The first threaded rod 17 is rotatably disposed between two first fixed plates. The first fixed plates are all fixedly disposed at the upper end of the mounting box 16. A limiting slide rod 34 is fixedly provided on one side of both the first clamping frame 11 and the second clamping frame 12. A limiting slide ring 35 is slidably provided on each limiting slide rod 34. The two limiting slide rings 35 are respectively fixedly disposed on one side of the third clamping frame 13 and the fourth clamping frame 14. The third clamping frame 13 and the fourth clamping frame 14 are both slidably disposed on the second guide frame 19. Both ends of the second guide frame 19 are slidably disposed on the third guide frame 20. The third guide frame 20 is fixedly disposed at the upper end of the mounting box 16. A second threaded block is fixedly provided at the bottom end of the third clamping frame 13. The second threaded block is fitted onto the second threaded rod 18. One end of the second threaded rod 18 is provided with a rotating block, which is fixed at the bottom end of the first clamping frame 11. The other end of the second threaded rod 18 is provided with a second fixing plate, which is fixed at the upper end of the mounting box 16. In use, when it is necessary to clamp the front cover of the gear pump, the front cover of the gear pump is placed between the first clamping frame 11, the second clamping frame 12, the third clamping frame 13 and the fourth clamping frame 14. Then, the second threaded rod 18 is rotated. Under the action of the thread, the second threaded rod 18 drives the third clamping frame 13 to move along the length direction of the third guide frame 20. The third clamping frame 13 drives the fourth clamping frame 14 to move simultaneously through the second guide frame 19. Then, the first threaded rod 17 is rotated. Under the action of the thread, the first threaded rod 17 drives the second clamping frame 12 to move along the length direction of the first guide frame 15. The second clamping frame 12 drives the fourth clamping frame 14 to move simultaneously through the limiting slide rod 34, thereby completing the clamping and fixing of the front cover of the gear pump.

[0022] The first adjustment mechanism includes a first worm gear 26. A first fixed shaft is fixedly provided at the bottom end of the fixed column 23. The first worm gear 26 is fixedly provided on the first fixed shaft. A first worm 27 is meshed on the first worm gear 26. The first worm 27 is rotatably disposed inside the fixed cover 25. In use, when it is necessary to adjust the horizontal machining angle of the mounting box 16, the user rotates the first worm 27. The first worm 27 meshes with the first worm gear 26, thereby driving the fixed column 23 to rotate. The fixed column 23 drives the mounting box 16 to rotate, thereby adjusting the horizontal machining angle of the mounting box 16.

[0023] The second adjustment mechanism includes a second worm gear 30. A second fixed shaft is fixedly mounted on the rotating shaft at one end of the rotating seat 28. The second worm gear 30 is fixedly mounted on the second fixed shaft. A second worm 31 is meshed on the second worm gear 30. The second worm 31 is rotatably disposed inside the protective cover 32. The second worm gear 30 is installed inside the protective cover 32. The protective cover 32 is fixedly disposed on the upper end of the mounting base plate 33. In use, when it is necessary to adjust the vertical processing angle of the mounting box 16, the second worm 31 is rotated, and the second worm 31 meshes with the second worm gear 30, thereby driving the rotating seat 28 to rotate. The rotating seat 28 drives the mounting box 16 to rotate through the fixed cover 25 and the fixed column 23.

[0024] A first pointer is fixed at one end of the second fixed shaft, a number of first scale lines are provided on one side of the protective cover 32, a second pointer is fixed on the fixed post 23, and a number of second scale lines are provided on the outer side of the rotating ring 24. In use, the first pointer and the second pointer facilitate accurate adjustment by the user.

[0025] The mounting box 16 has a mounting hole at its upper end, and a partition net 21 is fixedly installed inside the mounting hole. A protective railing is provided at the upper end of the mounting box 16 corresponding to the position of the mounting hole. A collection box 22 is slidably installed inside the mounting box 16 to facilitate the collection of debris generated during milling and drilling.

[0026] The above embodiments disclose a fixture for milling and drilling the front cover of a gear pump. When clamping the front cover of the gear pump, the front cover is placed between the first clamping frame 11, the second clamping frame 12, the third clamping frame 13, and the fourth clamping frame 14. Then, the second threaded rod 18 is rotated. Under the action of the thread, the second threaded rod 18 drives the third clamping frame 13 to move along the length direction of the third guide frame 20. Simultaneously, the third clamping frame 13 drives the fourth clamping frame 14 to move via the second guide frame 19. Then, the first threaded rod 17 is rotated. Under the action of the thread, the first threaded rod 17 drives the second clamping frame 12 along the first guide frame. 15. Moving along the length direction, the second clamping frame 12 drives the fourth clamping frame 14 to move simultaneously via the limiting slide bar 34, thereby completing the clamping and fixing of the gear pump front cover. When the horizontal machining angle of the mounting box 16 needs to be adjusted, the user rotates the first worm 27, which meshes with the first worm wheel 26, thereby driving the fixed column 23 to rotate. The fixed column 23 drives the mounting box 16 to rotate. When the vertical machining angle of the mounting box 16 needs to be adjusted, the second worm 31 is rotated, which meshes with the second worm wheel 30, thereby driving the rotating seat 28 to rotate. The rotating seat 28 drives the mounting box 16 to rotate via the fixed cover 25 and the fixed column 23.

[0027] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fixture for milling and drilling the front cover of a gear pump, comprising a first clamping frame (11), a second clamping frame (12), and a mounting box (16), wherein the first clamping frame (11) and the second clamping frame (12) are symmetrically arranged, the first clamping frame (11) is fixedly mounted on a first guide frame (15), the second clamping frame (12) is slidably mounted on the first guide frame (15), and a first fixing plate is fixedly provided at both ends of the first guide frame (15), characterized in that, The mounting box (16) is provided with a third clamping frame (13) and a fourth clamping frame (14) above it. The upper end of the mounting box (16) is provided with a clamping mechanism for moving the second clamping frame (12), the third clamping frame (13) and the fourth clamping frame (14). The bottom end of the mounting box (16) is fixedly provided with a fixed column (23). A rotating ring (24) is rotatably provided on the fixed column (23). The rotating ring (24) is installed on one end of the fixed cover (25). The bottom end of the fixed cover (25) is fixedly provided with a rotating seat (28). The rotating seat (28) is hinged to the inside of the fixed seat (29). The fixed seat (29) is fixedly provided on the mounting base plate (33). The inside of the fixed cover (25) is provided with a first adjustment mechanism for adjusting the horizontal working angle of the mounting box (16). The rotating shaft at one end of the rotating seat (28) is provided with a second adjustment mechanism for adjusting the vertical working angle of the mounting box (16).

2. The fixture for milling and drilling the front cover of a gear pump according to claim 1, characterized in that, The clamping mechanism includes a first threaded rod (17) and a second threaded rod (18). A first threaded block is fixedly provided at the bottom end of the second clamping frame (12). The first threaded block is fitted onto the first threaded rod (17). The first threaded rod (17) is rotatably disposed between two first fixed plates. The first fixed plates are all fixedly disposed at the upper end of the mounting box (16). A limiting slide rod (34) is fixedly provided on one side of both the first clamping frame (11) and the second clamping frame (12). A limiting slide ring (35) is slidably provided on each of the limiting slide rods (34). The third clamping frame (13) and the fourth clamping frame (14) are respectively symmetrically arranged with the first clamping frame (11) and the second clamping frame (12). The two limiting slide rings (35) are respectively fixedly disposed on... On one side of the third clamping frame (13) and the fourth clamping frame (14), the third clamping frame (13) and the fourth clamping frame (14) are slidably mounted on the second guide frame (19). Both ends of the second guide frame (19) are slidably mounted on the third guide frame (20). The third guide frame (20) is fixedly mounted on the upper end of the mounting box (16). The bottom end of the third clamping frame (13) is fixedly provided with a second threaded block. The second threaded block is fitted on the second threaded rod (18). One end of the second threaded rod (18) is rotatably provided with a rotating block. The rotating block is fixedly mounted on the bottom end of the first clamping frame (11). The other end of the second threaded rod (18) is rotatably provided with a second fixing plate. The second fixing plate is fixedly mounted on the upper end of the mounting box (16).

3. The fixture for milling and drilling the front cover of a gear pump according to claim 1, characterized in that, The first adjustment mechanism includes a first worm gear (26), a first fixed shaft is fixedly provided at the bottom end of the fixed column (23), the first worm gear (26) is fixedly provided on the first fixed shaft, a first worm (27) is meshed on the first worm gear (26), and the first worm (27) is rotatably provided inside the fixed cover (25).

4. The fixture for milling and drilling the front cover of a gear pump according to claim 3, characterized in that, The second adjustment mechanism includes a second worm gear (30), a second fixed shaft is fixedly provided on the rotating shaft at one end of the rotating seat (28), the second worm gear (30) is fixedly provided on the second fixed shaft, a second worm (31) is meshed on the second worm gear (30), the second worm (31) is rotatably provided inside the protective cover (32), the second worm gear (30) is installed inside the protective cover (32), and the protective cover (32) is fixedly provided on the upper end of the mounting base plate (33).

5. The fixture for milling and drilling the front cover of a gear pump according to claim 4, characterized in that, The second fixed shaft is fixedly provided with a first pointer at one end, the protective cover (32) is provided with a number of first scale lines on one side, the fixed column (23) is fixedly provided with a second pointer, and the rotating ring (24) is provided with a number of second scale lines on the outside.

6. The fixture for milling and drilling the front cover of a gear pump according to claim 1, characterized in that, The mounting box (16) has a mounting hole at the top, and a mesh (21) is fixedly installed inside the mounting hole. A guardrail is provided at the top of the mounting box (16) corresponding to the position of the mounting hole. A collection box (22) is slidably installed inside the mounting box (16).

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