Fixing tool for boring differential case

Abstract

The utility model discloses a differential case boring fixing tool which comprises a clamping tool, a boss is integrally arranged on the top of the clamping tool, and the left side and the right side of the boss are respectively provided with an installation sleeve in a welded mode. According to the clamping device, by rotating the threaded rods in threaded connection with the two sides of the boss, the two threaded sleeves are made to move oppositely along the corresponding threaded rods respectively, and then the two threaded sleeves drive the corresponding arc clamping frames to move oppositely under the action of the mounting blocks; the guide lugs arranged at the edges of the arc clamping frames are in sliding connection with the guide rods on the top faces of the bosses, so that the two arc clamping frames abut against the two sides of the bottom of the differential case, the positioning arcs arranged on the concave faces of the arc clamping frames make contact with the edges of the bottom of the differential case, and the purpose of locking the differential case is achieved. The contact area between the clamping end and the differential carrier can be increased to the maximum extent, and the offset phenomenon caused by the small contact area between the clamping end of the fixing tool and the differential carrier is avoided.

Description

Fixture for boring differential housing Technical Field

[0001] This utility model relates to the technical field, and in particular to a fixing fixture for boring differential housings. Background Technology

[0002] The differential housing is the outer shell of the differential. In the production and processing of the differential housing, a drill bit is usually used to drill holes in the differential housing first. Then, the differential housing is manually moved and rotated to the boring machine processing position, and the holes are precision processed using a boring tool.

[0003] A search revealed that publication number CN211915557U discloses a tooling fixture for a differential housing, including a boring machine, a drilling device, a base plate, and a tooling mold. The boring machine, drilling device, and tooling mold are all fixed to the base plate, with the boring machine and drilling device symmetrically distributed on both sides of the tooling mold. The tooling mold consists of an indexing plate, a support column, a PLC control panel, a first positioning component, a second positioning component, and a rotating mechanism. The indexing plate is fixed to the top of the support column, and the bottom of the support column is rotatably connected to the surface of the base plate via a thrust bearing. This invention positions the differential housing on the indexing plate using the first and second positioning components. The differential housing is drilled using the surrounding drilling device, and the rotating mechanism drives the indexing plate to rotate, allowing the drilling device and boring machine to process the other side of the differential housing. This eliminates the need for repositioning and manual movement of the differential housing, ensuring drilling accuracy during processing and increasing processing efficiency.

[0004] However, the contact area between the clamping end of the aforementioned fixed fixture and the differential housing is limited. In the actual boring process, the differential housing may shift, which adversely affects the boring accuracy of the differential housing. Secondly, the fixed fixture in this scheme does not have a chip removal structure, which makes chip removal inconvenient during the boring stage.

[0005] To address this issue, a fixing fixture for boring differential housings is proposed, which has the advantages of convenient and secure workpiece clamping and easy chip removal, thereby solving the problems mentioned in the background technology. Summary of the Invention

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a fixing fixture for boring differential housings.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a fixing fixture for boring differential housing, including a clamping fixture. The clamping fixture has an integrally formed boss on its top, and a mounting sleeve is welded to the left and right sides of the boss. Each mounting sleeve is threadedly connected to a threaded rod, and the surface of the threaded rod is threadedly connected to a threaded sleeve. The top of the boss is provided with two arc-shaped clamping frames, and the upper part of the concave surface of each arc-shaped clamping frame is provided with several positioning arcs. A mounting block is welded to the middle of the convex surface of each arc-shaped clamping frame. The surface of the mounting block is provided with a mounting groove. The top of the threaded sleeve is integrally provided with an extension block, and the extension block extends through the boss into the mounting groove. A bolt threadedly connected to the extension block is threaded in the mounting groove. A guide rod is welded to the edge of the top surface of the boss, and a guide ear is sleeved on the surface of the guide rod. The guide ear is fixedly installed at the edge of the convex surface of the arc-shaped clamping frame. The clamping fixture has a waste chamber inside, and a chip discharge port communicating with the waste chamber is opened on the side of the clamping fixture.

[0008] As a further description of the above technical solution: a metal mesh plate is embedded in the top surface of the boss, and the surface of the metal mesh plate has a strip-shaped relief opening corresponding to the threaded sleeve. The relief opening is connected to the waste cavity of the clamping fixture.

[0009] As a further description of the above technical solution: a fixing block is welded to the top surface of the inner side of the waste chamber, and a bushing connected to the threaded rod is provided on the fixing block.

[0010] As a further description of the above technical solution: the end of the threaded rod away from the boss is fixedly connected to a rotating part, and the rotating part is composed of a metal column and butterfly-shaped blades arranged on both sides.

[0011] As a further description of the above technical solution: the inner side of the mounting groove of the mounting block is provided with a threaded groove corresponding to the bolt, and the surface of the extension block is provided with a through hole corresponding to the bolt.

[0012] As a further description of the above technical solution: the clamping fixture and the boss on its top have an inverted T-shaped cross-section.

[0013] This utility model has the following beneficial effects:

[0014] In this invention, by rotating the threaded rods connected to the threads on both sides of the boss, the two threaded sleeves are moved towards each other along the corresponding threaded rods. Then, under the action of the mounting block, the two threaded sleeves drive the corresponding arc clamping frames to move towards each other. Combined with the guide ears set at the edge of the arc clamping frames and the guide rod on the top surface of the boss, the two arc clamping frames can abut against the bottom sides of the differential housing. Several positioning arcs set on the concave surface of the arc clamping frames keep in contact with the bottom edge of the differential housing, achieving the purpose of locking the differential housing. Compared with the existing tooling, it can maximize the contact area between the clamping end and the differential housing, and solve the offset phenomenon caused by the small contact area between the clamping end and the differential housing of the fixed tooling.

[0015] In this invention, a metal mesh plate is welded to the top surface of the boss of the clamping fixture, and chip discharge ports that are connected to the waste chamber are provided on both sides of the clamping fixture. In addition, a clearance port for the threaded sleeve to move is opened on the surface of the metal mesh plate. When the differential housing is bored, the fine boring debris directly passes through the gap on the surface of the metal mesh plate and falls into the waste chamber. Larger boring debris can be swept directly into the waste chamber through the clearance port. Combined with the setting of the chip discharge port, the purpose of cleaning the boring debris is achieved, which not only ensures the cleanliness of the surface of the clamping fixture, but also facilitates the unified recycling and treatment of the boring debris. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the structure of the fixing fixture for boring the differential housing of this utility model;

[0017] Figure 2 is a top view of the fixing fixture for boring the differential housing according to this utility model;

[0018] Figure 3 is a schematic diagram of the arc clamping frame structure of the fixing fixture for boring the differential housing of this utility model.

[0019] Legend:

[0020] 1. Clamping fixture; 2. Boss; 3. Mounting sleeve; 4. Threaded rod; 5. Waste chamber; 6. Fixing block; 7. Chip discharge port; 8. Arc-shaped clamping frame; 9. Mounting block; 10. Threaded sleeve; 11. Guide ear; 12. Guide rod; 13. Metal mesh plate; 14. Clearance opening; 15. Positioning arc; 16. Mounting groove; 17. Extension block; 18. Bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] According to an embodiment of the present invention, a fixing fixture for boring differential housings is provided.

[0023] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. As shown in Figures 1-3, the fixing fixture for boring differential housings according to an embodiment of the present invention includes a clamping fixture 1. A boss 2 is integrally provided on the top of the clamping fixture 1, and a mounting sleeve 3 is welded to the left and right sides of the boss 2. A threaded rod 4 is threadedly connected to each mounting sleeve 3, and a threaded sleeve 10 is threadedly connected to the surface of the threaded rod 4. Two arc-shaped clamping frames 8 are provided on the top of the boss 2, and several positioning arcs 15 are provided on the upper part of the concave surface of each arc-shaped clamping frame 8. A mounting block 9 is welded to the middle of the convex surface of each arc-shaped clamping frame 8. A mounting groove 16 is opened on the surface of the mounting block 9. An extension block 17 is integrally provided on the top of the threaded sleeve 10, and the extension block 17 extends through the boss 2. The mounting groove 16 is connected to the bolt 18 that is threaded and inserted into the extension block 17. A guide rod 12 is welded to the edge of the top surface of the boss 2, and a guide ear 11 is fitted on the surface of the guide rod 12. The guide ear 11 is fixedly installed on the edge of the convex surface of the arc clamping frame 8. The clamping fixture 1 has a waste cavity 5 inside, and a chip discharge port 7 connected to the waste cavity 5 is opened on the side of the clamping fixture 1. Two guide rods 12 are provided and are arranged in parallel. Two guide ears 11 are provided on the arc clamping frame 8 and connected to the two guide rods 12 to achieve the purpose of guiding the movement of the arc clamping frame 8, improving the reliability of the overall structure of the arc clamping frame 8. The setting of the positioning arc 15 can contact and fix the bottom edge of the differential housing without affecting the boring operation and ensuring the clamping effect.

[0024] In one embodiment, a metal mesh plate 13 is embedded in the top surface of the boss 2, and a strip-shaped clearance opening 14 is provided on the surface of the metal mesh plate 13 corresponding to the threaded sleeve 10. The clearance opening 14 is connected to the waste chamber 5 of the clamping fixture 1. When collecting boring debris, since the metal mesh plate 13 is welded to the top surface of the boss 2 of the clamping fixture 1, and both sides of the clamping fixture 1 are provided with chip discharge ports 7 that are connected to the waste chamber 5, and the clearance opening 14 is provided on the surface of the metal mesh plate 13 for the threaded sleeve 10 to move, when the differential housing is boring, the fine boring debris directly passes through the gap on the surface of the metal mesh plate 13 and falls into the waste chamber 5. Larger boring debris can be directly entered into the waste chamber 5 through the clearance opening 14 by sweeping.

[0025] In one embodiment, a fixing block 6 is welded to the top surface of the inner side of the waste chamber 5, and a bushing connected to the threaded rod 4 is provided on the fixing block 6. The fixing block 6 and the bushing are provided to support the threaded rod 4 and increase the reliability of the installation.

[0026] In one embodiment, a rotating part is fixedly connected to the end of the threaded rod 4 away from the boss 2, and the rotating part is composed of a metal column and butterfly-shaped blades arranged on both sides. The rotating part is provided so that the threaded rod 4 can rotate.

[0027] In one embodiment, the inner side of the mounting groove 16 of the mounting block 9 is provided with a threaded groove corresponding to the bolt 18, and the surface of the extension block 17 is provided with a through hole corresponding to the bolt 18. The threaded groove and the through hole are provided so that the bolt 18 can be fixed and the threaded sleeve 10 can be disassembled so that different sizes of arc clamping frames 8 can be replaced, so as to achieve the effect of clamping differential housings of different sizes.

[0028] In one embodiment, the clamping fixture 1 and its top boss 2 have an inverted T-shaped cross-section. The clamping fixture 1 and its top boss 2, which are set by the T-shaped structure, provide space for the installation of the threaded rod 4 without occupying the space on the top surface of the boss 2. This satisfies the clamping of the differential housing while avoiding a series of interference problems caused by the threaded rod 4.

[0029] Working principle:

[0030] In use, the differential housing is first placed on the boss 2 of the clamping fixture 1. When clamping the differential housing, the threaded rods 4 connected by threads on both sides of the boss 2 are rotated, causing the two threaded sleeves 10 to move towards each other along the corresponding threaded rods 4. Then, under the action of the mounting block 9, the two threaded sleeves 10 drive the corresponding arc clamping frames 8 to move towards each other. Combined with the guide ears 11 set at the edge of the arc clamping frame 8 and the guide rod 12 on the top surface of the boss 2, the two arc clamping frames 8 can abut against the bottom sides of the differential housing. The several positioning arcs 15 set on the concave surface of the arc clamping frame 8 and the differential housing are also connected. The bottom edge remains in contact to lock the differential housing. When collecting boring debris, a metal mesh plate 13 is welded to the top surface of the boss 2 of the clamping fixture 1, and chip discharge ports 7 that are connected to the waste chamber 5 are provided on both sides of the clamping fixture 1. Furthermore, a clearance port 14 for the threaded sleeve 10 to move is opened on the surface of the metal mesh plate 13. When the differential housing is boring, the fine boring debris directly passes through the gap on the surface of the metal mesh plate 13 and falls into the waste chamber 5. Larger boring debris can be swept directly into the waste chamber 5 through the clearance port 14 and then discharged through the chip discharge port 7.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixing fixture for boring a differential housing, including a clamping fixture (1), characterized in that: The clamping fixture (1) has an integrally formed boss (2) on its top, and a mounting sleeve (3) is welded to the left and right sides of the boss (2). Each mounting sleeve (3) is threaded with a threaded rod (4), and a threaded sleeve (10) is threaded to the surface of the threaded rod (4). The top of the boss (2) is provided with two arc-shaped clamping frames (8), and the upper part of the concave surface of each arc-shaped clamping frame (8) is provided with several positioning arcs (15). A mounting block (9) is welded to the middle of the convex surface of each arc-shaped clamping frame (8). The surface of the mounting block (9) is provided with a mounting groove (16). The threaded sleeve (10) An extension block (17) is integrally provided on the top of 10), and the extension block (17) extends through the boss (2) into the mounting groove (16). The mounting groove (16) is threaded with a bolt (18) that is inserted into the extension block (17). A guide rod (12) is welded to the edge of the top surface of the boss (2), and a guide ear (11) is sleeved on the surface of the guide rod (12). The guide ear (11) is fixedly installed on the edge of the convex surface of the arc clamping frame (8). A waste chamber (5) is opened inside the clamping fixture (1), and a chip discharge port (7) connected to the waste chamber (5) is opened on the side of the clamping fixture (1).

2. The fixing fixture for boring differential housings according to claim 1, characterized in that: The top surface of the boss (2) is embedded with a metal mesh plate (13), and the surface of the metal mesh plate (13) is provided with a strip-shaped relief opening (14) corresponding to the threaded sleeve (10). The relief opening (14) is connected to the waste cavity (5) of the clamping fixture (1).

3. The fixing fixture for boring differential housings according to claim 1, characterized in that: A fixing block (6) is welded to the top surface of the inner side of the waste chamber (5), and a bushing connected to the threaded rod (4) is provided on the fixing block (6).

4. The fixing fixture for boring differential housings according to claim 1, characterized in that: The threaded rod (4) is fixedly connected to a rotating part at one end away from the boss (2), and the rotating part consists of a metal column and butterfly-shaped blades on both sides.

5. The fixing fixture for boring differential housings according to claim 1, characterized in that: The mounting groove (16) of the mounting block (9) has a threaded groove on the inner side corresponding to the bolt (18), and the surface of the extension block (17) has a through hole corresponding to the bolt (18).

6. The fixing fixture for boring differential housings according to claim 1, characterized in that: The clamping fixture (1) and its top boss (2) have an inverted T-shaped cross-section.

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