Gear shaft positioning and drilling clamp

Abstract

The utility model belongs to the technical field of gear machining, and discloses a gear shaft positioning and drilling clamp which comprises a clamp body and a clamping mechanism, the interior of the clamp body is of a hollow structure, and the clamping mechanism is arranged in the clamp body. The clamping mechanism comprises an electric telescopic rod, a toothed rod, two circular shafts, two gears, a fixing piece, a connecting piece and a chuck, the electric telescopic rod is fixedly installed in the clamp body, and the toothed rod is fixedly connected to the output end of the electric telescopic rod. The fixture solves the problems that an existing fixture mainly depends on matched connection of a screw and a nut and fixes and clamps a gear shaft, but the screw and the nut can be abraded after being used for a long time, so that a slipping phenomenon occurs when the screw and the nut are rotated for matched connection, and the gear shaft cannot be stably fixed and clamped; and meanwhile, when a screw and a nut are matched and connected, the screw needs to be continuously rotated, so that time and labor are wasted, and the gear shaft is inconvenient to clamp.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear processing, in particular to a gear shaft positioning drilling fixture. Background Art

[0002] In the process of automobile gearbox gear processing, in order to ensure that the bearings on the gear shaft can get lubricating oil, it is necessary to provide oil holes on the gear shaft. During the drilling process, a special fixture needs to be designed.

[0003] The gear shaft positioning drilling fixture disclosed in CN 218946417 U has a right-angle structure with a high front and a low rear, a V-shaped structure for placing the gear shaft in the middle of the front side of the fixture, a pillow block positioning end face for the front side of the fixture, and pillars are installed on both sides of the V-shaped groove at the front of the fixture. Rotary pressure plates are installed on the pillars on both sides, and the rotary pressure plates are fixed on the pillars through nuts. The gear shaft positioning drilling fixture of the utility model adopts the outer shaft diameter of the gear shaft and the pillow block positioning end face for positioning, uses the pressure plate to press the shaft diameter cylindrical surface, and fixes the fixture to the machine tool for drilling. The drilling efficiency is high and the clamping is fast, the positioning accuracy is high, and the production efficiency is greatly improved.

[0004] The existing clamps mainly rely on screws and nuts to connect and fix the gear shaft, but the screws and nuts will wear out after long-term use, so slipping will occur when the screws and nuts are turned to connect, so the gear shaft cannot be stably fixed and clamped. At the same time, when the screws and nuts are used for connection, the screws need to be turned continuously, which is time-consuming and labor-intensive, and inconvenient to clamp the gear shaft. Utility Model Content

[0005] The utility model aims to provide a gear shaft positioning drilling fixture to solve the technical problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a gear shaft positioning drilling fixture, comprising a fixture body and a clamping mechanism, the interior of the fixture body is a hollow structure, and the clamping mechanism is arranged inside the fixture body;

[0007] The clamping mechanism includes an electric telescopic rod, a gear rod, two round shafts, two gears, a fixing member, a connecting member and a chuck. The electric telescopic rod is fixedly installed inside the clamp body, the gear rod is fixedly connected to the output end of the electric telescopic rod, the two round shafts are fixedly connected to the inside of the clamp body and are located on both sides of the gear rod, the two gears are respectively sleeved on the surfaces of the two round shafts, the two gears are respectively meshed and connected to both sides of the gear rod, the fixing members are respectively sleeved on the surfaces of the two round shafts, the fixing members are respectively fixedly connected to the tops of the two gears, one end of the connecting member is respectively fixedly connected to the top of the fixing member, the other end of the connecting member passes through the top of the clamp body, and the chucks are respectively fixedly connected to the top of the connecting member.

[0008] Preferably, a matching groove is provided on the top of the clamp body, and the matching groove is used in conjunction with the connecting piece.

[0009] Preferably, an arc-shaped groove is provided on the inner side of the chuck, and the depth of the arc-shaped groove is three centimeters.

[0010] Preferably, a protrusion is fixedly connected to the inner wall of the arc-shaped groove, and there are several protrusions which are evenly distributed on the inner wall of the arc-shaped groove.

[0011] Preferably, the surfaces of the two circular shafts are sleeved with limiting rings, and the limiting rings are located on the top of the fixing member.

[0012] Preferably, the inner wall of the clamp body is fixedly connected to a limit rod, the top of the gear rod is fixedly connected to a limit block, and the limit block is slidably connected to the surface of the limit rod.

[0013] The utility model has the following advantages:

[0014] 1. The gear shaft positioning drilling fixture, by setting a fixture body and a clamping mechanism, can first place the gear shaft between the chucks on the fixture body when processing and clamping the gear shaft, and then operate the electric telescopic rod. After the electric telescopic rod is operated, the output end will extend forward, and at the same time drive the gear rod to move forward. The forward movement of the gear rod will drive the two meshingly connected gears to rotate inward on the surfaces of the two circular shafts at the same time. When the two gears rotate inward, they will also drive the fixing part and the connecting part to rotate inward at the same time. The inward rotation of the connecting part will drive the chuck to rotate inward. When the two chucks rotate inward, the gear shaft between the chucks will be fixed and clamped, thereby achieving the advantage of facilitating the clamping of the gear shaft.

[0015] 2. The gear shaft positioning drilling fixture can increase the contact area between the gear shaft and the chuck when clamping the gear shaft by setting the arc groove and the protrusion. At the same time, under the action of the protrusion, the friction between the gear shaft and the chuck can be increased, thereby fixing and clamping the gear shaft more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the top cross-sectional structure of the gear shaft positioning drilling fixture of the utility model;

[0019] Figure 3 The utility model is a schematic diagram of the clamping mechanism structure of the gear shaft positioning drilling fixture.

[0020] Explanation of the markings in the figure: 1. Clamp body; 2. Electric telescopic rod; 3. Gear rod; 4. Round shaft; 5. Gear; 6. Fixing piece; 7. Connecting piece; 8. Chuck; 9. Matching groove; 10. Arc groove; 11. Protrusion; 12. Limiting ring; 13. Limiting rod; 14. Limiting block. DETAILED DESCRIPTION

[0021] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0022] Example 1

[0023] like Figure 1-3As shown, the gear shaft positioning drilling fixture of the utility model comprises a fixture body 1 and a clamping mechanism. The interior of the fixture body 1 is a hollow structure, and the clamping mechanism is arranged inside the fixture body 1; the clamping mechanism comprises an electric telescopic rod 2, a gear rod 3, two round shafts 4, two gears 5, a fixing member 6, a connecting member 7 and a chuck 8. The electric telescopic rod 2 is fixedly installed inside the fixture body 1, the gear rod 3 is fixedly connected to the output end of the electric telescopic rod 2, the two round shafts 4 are fixedly connected to the interior of the fixture body 1 and are located on both sides of the gear rod 3, the two gears 5 are respectively sleeved on the surfaces of the two round shafts 4, the two gears 5 are respectively meshed and connected to both sides of the gear rod 3, the fixing members 6 are respectively sleeved on the surfaces of the two round shafts 4, the fixing members 6 are respectively fixedly connected to the tops of the two gears 5, one end of the connecting member 7 is respectively fixedly connected to the top of the fixing member 6, the other end of the connecting member 7 passes through the top of the fixture body 1, and the chuck 8 is respectively fixedly connected to the top of the connecting member 7, so that the clamp The tool body 1 and the clamping mechanism are used in combination, and the gear shaft can be conveniently fixed and clamped, thereby saving the time and physical strength of the staff. A matching groove 9 is provided on the top of the clamp body 1, and the matching groove 9 is used in combination with the connecting piece 7, so that the connecting piece 7 can pass through the clamp body 1, and at the same time, it is convenient for the chuck 8 in the flexible zone of the connecting piece 7 to move. The surfaces of the two circular shafts 4 are both sleeved with limit rings 12, and the limit rings 12 are located at the top of the fixing piece 6, which can assist in limiting the fixing piece 6 to avoid displacement when the gear 5 drives the fixing piece 6 to rotate, so that the fixing piece 6 can better play the role of auxiliary limiting. The inner wall of the clamp body 1 is fixedly connected to the limit rod 13, and the top of the gear rod 3 is fixedly connected to the limit block 14. The limit block 14 is slidably connected to the surface of the limit rod 13, which can assist in limiting the gear rod 3 to avoid shaking and being unable to be tightly meshed with the two gears 5 when the electric telescopic rod 2 drives the gear rod 3 to move due to lack of limit.

[0024] Example 2

[0025] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 and 3 An arc groove 10 is provided on the inner side of the chuck 8, and the depth of the arc groove 10 is three centimeters. When clamping the gear shaft, the gear shaft is matched and connected with the arc groove 10, which can increase the contact area between the chuck 8 and the gear shaft, thereby clamping the gear shaft more stably. A protrusion 11 is fixedly connected to the inner wall of the arc groove 10. There are several protrusions 11, which are evenly distributed on the inner wall of the arc groove 10. By setting the protrusions 11, the friction between the chuck 8 and the gear shaft can be increased, thereby playing a protective role.

[0026] The working principle of the gear shaft positioning drilling fixture is as follows: when clamping the gear shaft, the gear shaft can be placed between the chucks 8 on the fixture body 1 first, and then the electric telescopic rod 2 can be operated. After the electric telescopic rod 2 is operated, the output end will extend forward and drive the gear rod 3 to move forward. The forward movement of the gear rod 3 will drive the two meshingly connected gears 5 to rotate inward on the surfaces of the two circular shafts 4 at the same time. When the two gears 5 rotate inward, they will drive the fixing member 6 and the connecting member 7 to rotate inward at the same time. The inward rotation of the connecting member 7 will drive the chuck 8 to rotate inward. When the two chucks 8 rotate inward, the gear shaft between the chucks 8 will be fixed and clamped, thereby achieving the advantage of facilitating the clamping of the gear shaft.

[0027] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A gear shaft positioning drilling fixture, comprising a fixture body (1) and a clamping mechanism, characterized in that: The interior of the clamp body (1) is a hollow structure, and the clamping mechanism is arranged inside the clamp body (1); The clamping mechanism comprises an electric telescopic rod (2), a gear rod (3), two round shafts (4), two gears (5), a fixing member (6), a connecting member (7) and a clamp (8); the electric telescopic rod (2) is fixedly installed inside the clamp body (1); the gear rod (3) is fixedly connected to the output end of the electric telescopic rod (2); the two round shafts (4) are fixedly connected to the inside of the clamp body (1) and are located on both sides of the gear rod (3); the two gears (5) are respectively sleeved on the surfaces of the two round shafts (4); the two gears (5) are respectively meshed and connected to both sides of the gear rod (3); the fixing member (6) is respectively sleeved on the surfaces of the two round shafts (4); the fixing member (6) is respectively fixedly connected to the top of the two gears (5); one end of the connecting member (7) is respectively fixedly connected to the top of the fixing member (6); the other end of the connecting member (7) passes through the top of the clamp body (1); and the clamp (8) is respectively fixedly connected to the top of the connecting member (7).

2. The gear shaft positioning drilling fixture according to claim 1, characterized in that: A matching groove (9) is provided on the top of the clamp body (1), and the matching groove (9) is used in conjunction with the connecting piece (7).

3. The gear shaft positioning drilling fixture according to claim 1, characterized in that: An arc-shaped groove (10) is provided on the inner side of the clamp (8), and the depth of the arc-shaped groove (10) is three centimeters.

4. The gear shaft positioning drilling fixture according to claim 3, characterized in that: The inner wall of the arc-shaped groove (10) is fixedly connected with a protrusion (11), and the number of the protrusions (11) is several and evenly distributed on the inner wall of the arc-shaped groove (10).

5. The gear shaft positioning drilling fixture according to claim 1, characterized in that: The surfaces of the two circular shafts (4) are both sleeved with limiting rings (12), and the limiting rings (12) are located on the top of the fixing member (6).

6. The gear shaft positioning drilling fixture according to claim 1, characterized in that: The inner wall of the clamp body (1) is fixedly connected to a limit rod (13), the top of the gear rod (3) is fixedly connected to a limit block (14), and the limit block (14) is slidably connected to the surface of the limit rod (13).

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