Fine machining clamp for internal spline of half axle gear

Abstract

The utility model discloses a half axle gear internal spline finish machining clamp, which relates to the technical field of clamps, and comprises a clamp main body, the clamp main body is composed of four parts, each group of clamp main body is connected in an attached manner, the inner wall of each group of clamp main body is provided with a limiting tooth wall, and the limiting tooth walls are connected with the clamp main body. The limiting tooth walls are matched with outer wall gear teeth of the half axle gear, limiting plates extending downwards are fixed to the two ends of each set of clamp body, and the inner side end faces of the limiting plates are attached to the outer walls of the end gear teeth of the half axle gear. By arranging the clamp body, the limiting tooth wall and the limiting plate, stable limiting of the half axle gear can be achieved through the limiting tooth wall, so that the half axle gear is prevented from rotating and sliding during machining, in addition, the limiting plate is arranged, transverse sliding of the half axle gear is further limited, and the machining precision of the half axle gear is improved. And the clamping stability of the half axle gear is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures, in particular to a fine machining fixture for the internal spline of a half shaft gear. Background Art

[0002] The half shaft gear is a gear in an automotive differential and is a conical gear. An automobile is equipped with two half shaft gears. The automobile has two drive shafts, which are respectively connected to the two half shaft gears to drive the left and right wheels respectively. The half shaft gear is installed on the differential assembly. One end of the automotive drive half shaft is connected to the half shaft gear by a spline, and the other end is connected to the automotive drive wheel. For a rear-wheel drive vehicle, the differential assembly is in the rear axle housing; for a front-wheel drive vehicle, the differential assembly is in the transmission.

[0003] The half shaft gear is one of the important components in the differential, mainly composed of a gear end and a bearing end, and the inner wall of the bearing end has an internal spline.

[0004] Due to the high precision requirements for the internal spline, the machining is relatively troublesome. The main factor is that it is difficult for the fixture to clamp the half shaft gear, and slippage, that is, rotation, occurs during machining, resulting in a low working efficiency in the process of machining the internal spline and easily damaging the outer wall of the half shaft gear. Summary of the Utility Model

[0005] Based on this, the purpose of the utility model is to provide a fine machining fixture for the internal spline of a half shaft gear to solve the technical problems mentioned in the above background.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A fine machining fixture for the internal spline of a half shaft gear, including a fixture main body. The fixture main body is composed of four parts, and each group of the fixture main bodies is in a fitting connection. The inner wall of each group of the fixture main bodies is provided with a limiting tooth wall, and the limiting tooth wall matches the outer teeth of the half shaft gear. Limiting plates extending downward are fixed at both ends of each group of the fixture main bodies, and the inner end face of the limiting plate is in contact with the outer tooth wall of the end teeth of the half shaft gear.

[0007] By adopting the above technical solution, the stable limiting of the half shaft gear can be realized by using the limiting tooth wall, thereby preventing the half shaft gear from rotating and slipping during machining. In addition, the limiting plate is provided to further limit the lateral slip of the half shaft gear, further improving the clamping stability of the half shaft gear.

[0008] The utility model is further provided that a driving structure is arranged on the outer side of the fixture main body to realize the driving of multiple groups of the fixture main bodies.

[0009] By adopting the above technical solution, the driving effect on the fixture main body is achieved.

[0010] The present utility model is further configured such that the driving structure includes an installation ring disposed at intervals outside the fixture body, and four lead screws corresponding to the fixture body are installed inside the installation ring, and a threaded wall adapted to the outer wall of the lead screw is provided on the inner wall of the installation ring.

[0011] By adopting the above technical solution, the effect of assisting the movement of the lead screw is achieved.

[0012] The present utility model is further configured such that the end of the lead screw is connected to the outer wall of the fixture body through a bearing, and the other end of the lead screw is fixedly connected with a driven gear.

[0013] By adopting the above technical solution, the effect of driving the lead screw is achieved.

[0014] The present utility model is further configured such that the outer wall of the driven gear is meshed with a driving toothed ring, and the driving toothed ring is slidably connected to the outer wall of the installation ring. A driven tooth wall for being driven is further provided on the outer wall of the driving toothed ring. A driving motor is further installed on the outer wall of the installation ring, and the output end of the driving motor is synchronously connected with a driving gear, and the driving gear is meshed with the driven tooth wall on the outer wall of the driving toothed ring.

[0015] By adopting the above technical solution, the effect of driving the driving toothed ring is achieved.

[0016] In summary, the present utility model mainly has the following beneficial effects:

[0017] 1. By providing a limiting tooth wall and a limiting plate, first, the half-axis gear is placed between multiple fixture bodies, and then multiple fixture bodies are driven to close. After the fixture bodies are closed, the limiting tooth wall on the inner wall of the fixture body can be engaged with the outer wall teeth of the half-axis gear, so as to realize the limiting clamping of the half-axis gear, prevent the sliding of the half-axis gear in the rotation direction. In addition, the limiting plate at the end of each fixture body can prevent the lateral sliding of the half-axis gear, further improving the stability of the half-axis gear and ensuring the quality of the internal spline processing of the half-axis gear.

[0018] 2. By providing an installation ring, a lead screw, a driven gear, a driving toothed plate, a driving gear and a driving motor, when driving the fixture body, the driving motor is driven. The driving motor can drive the driving toothed ring through the meshing effect of the driving gear and the driven tooth wall. After the driving toothed ring rotates, it will drive multiple driven gears to rotate. After the driven gears rotate, they will drive the lead screws to rotate. Therefore, the lead screws will move in the mounting plate, thereby driving the fixture body to move in a closing manner, realizing the synchronous movement effect of the fixture body, and making the clamping of the fixture body on the half-axis gear more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 Exploded view of the present utility model;

[0021] Figure 3 Schematic diagram of the drive structure of the present utility model;

[0022] Figure 4 Schematic diagram of the installation of the drive motor of the present utility model.

[0023] In the figure: 1, fixture main body; 2, limiting tooth wall; 3, limiting plate; 4, mounting ring; 5, lead screw; 6, driven gear; 7, driving tooth ring; 8, driving gear; 9, drive motor. Specific implementation manner

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.

[0025] Next, according to the overall structure of the present utility model, its embodiments will be described.

[0026] A fine machining fixture for the internal spline of a half shaft gear, as Figures 1-4 shown, includes a fixture main body 1. The fixture main body 1 is composed of four parts, and each group of fixture main bodies 1 is connected in a fitting manner. The inner wall of each group of fixture main bodies 1 is provided with a limiting tooth wall 2, and the limiting tooth wall 2 is matched with the outer teeth of the half shaft gear. Limiting plates 3 extending downward are fixed at both ends of each group of fixture main bodies 1, and the inner end face of the limiting plate 3 is arranged in contact with the outer wall teeth of the end teeth of the half shaft gear;

[0027] Furthermore, in this embodiment, a drive structure is arranged on the outer side of the fixture main body 1 to realize the drive of multiple groups of fixture main bodies 1. The drive structure includes mounting rings 4 arranged at intervals on the outer side of the fixture main body 1, and four groups of lead screws 5 corresponding to the fixture main body 1 are installed inside the mounting ring 4, and a thread wall threadedly adapted to the outer wall of the lead screw 5 is provided on the inner wall of the mounting ring 4.

[0028] Please refer to Figure 3 , the end of the lead screw 5 is connected to the outer wall of the fixture main body 1 through a bearing, and the other end of the lead screw 5 is fixedly connected with a driven gear 6 to realize the drive of the lead screw 5.

[0029] Please refer to Figures 3-4, the outer wall of the driven gear 6 is meshed and connected with a driving gear ring 7, and the driving gear ring 7 is slidably connected with the outer wall of the mounting ring 4. The outer wall of the driving gear ring 7 is also provided with a driven tooth wall for being driven. The outer wall of the mounting ring 4 is also installed with a driving motor 9, and the output end of the driving motor 9 is synchronously connected with a driving gear 8. The driving gear 8 is meshed and connected with the driven tooth wall on the outer wall of the driving gear ring 7 to realize the driving of the driving gear ring 7.

[0030] The working principle of the present utility model is as follows: First, place the half-axle gear between multiple fixture bodies 1, and then drive the multiple fixture bodies 1 to close. After the fixture bodies 1 are closed, the limiting tooth walls 2 on the inner walls of the fixture bodies 1 can be engaged with the outer wall teeth of the half-axle gear, so as to realize the limiting clamping of the half-axle gear and prevent the slip of the half-axle gear in the rotation direction.

[0031] In addition, the limiting plates 3 at the ends of each fixture body 1 can prevent the half-axle gear from slipping horizontally, further improving the stability of the half-axle gear and ensuring the quality of the internal spline machining of the half-axle gear.

[0032] Furthermore, when driving the fixture body 1, drive the driving motor 9. The driving motor 9 will realize the driving of the driving gear ring 7 through the meshing effect between the driving gear 8 and the driven tooth wall. After the driving gear ring 7 rotates, it will drive multiple driven gears 6 to start rotating. After the driven gears 6 rotate, they will drive the lead screw 5 to rotate. Therefore, the lead screw 5 will move in the mounting plate 4, thereby driving the fixture body 1 to move closer and close, realizing the synchronous movement effect of the fixture body 1 and making the clamping of the fixture body 1 on the half-axle gear more accurate.

[0033] Although the embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model and not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A fixture for finishing the internal spline of a half-axle gear, comprising a fixture body (1), characterized in that: The clamp body (1) is composed of four parts, and each group of the clamp bodies (1) are closely connected to each other. The inner wall of each group of the clamp bodies (1) is provided with a limit tooth wall (2), and the limit tooth wall (2) matches the outer wall teeth of the half-shaft gear. Both ends of each group of the clamp bodies (1) are fixed with a limit plate (3) extending downward, and the inner end surface of the limit plate (3) is closely connected to the outer wall of the teeth at the end of the half-shaft gear.

2. A fixture for finishing the internal spline of axle gear according to claim 1, characterized in that: A driving structure is provided on the outer side of the clamp body (1) to realize driving of multiple groups of the clamp bodies (1).

3. A fixture for finishing the internal spline of axle gear according to claim 2, characterized in that: The driving structure comprises a mounting ring (4) arranged at intervals on the outside of the clamp body (1), and four groups of screw rods (5) corresponding to the clamp body (1) are installed inside the mounting ring (4), and the inner wall of the mounting ring (4) is provided with a threaded wall adapted to the outer wall thread of the screw rod (5).

4. A fixture for finishing the internal spline of axle gear according to claim 3, characterized in that: The end of the screw rod (5) is connected to the outer wall of the clamp body (1) via a bearing, and the other end of the screw rod (5) is fixedly connected to a driven gear (6).

5. A fixture for finishing the internal spline of axle gear according to claim 4, characterized in that: The outer wall of the driven gear (6) is meshingly connected with a driving gear ring (7), and the driving gear ring (7) is slidably connected to the outer wall of the mounting ring (4), and the outer wall of the driving gear ring (7) is also provided with a driven gear wall for being driven.

6. A fixture for finishing the internal spline of axle gear according to claim 5, characterized in that: A driving motor (9) is also mounted on the outer wall of the mounting ring (4), and the output end of the driving motor (9) is synchronously connected to a driving gear (8), and the driving gear (8) is meshedly connected with the driven tooth wall of the outer wall of the driving gear ring (7).

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