Stamping device for improving machining precision of spline groove of half axle gear

Abstract

The utility model relates to a stamping device for improving the machining precision of a spline groove of a half axle gear, which comprises a press machine provided with a machining table top and a pressing block driven by hydraulic pressure, and is characterized by further comprising a positioning sleeve and a machining cutter, the positioning sleeve is detachably fixed on the machining table top, and the machining cutter is arranged on the machining table top. A half axle gear to be machined is placed at the bottom in the positioning sleeve, a machining tool is placed above the half axle gear and located on the inner side of the positioning sleeve, and the pressing block is movably arranged over the machining tool through hydraulic drive. The device has the beneficial effects that through cooperative arrangement of the press machine, the positioning sleeve and the machining tool, the device can punch a spline groove in the inner wall of the half axle gear subjected to heat treatment, then the machining precision of the spline groove in the inner wall of the half axle gear is improved, and the produced and machined half axle gear is more accurate during installation and use.

Description

Technical Field

[0001] The present application relates to the technical field of axle gear processing, and in particular to a stamping device for improving the processing accuracy of axle gear spline grooves. Background Art

[0002] Axle gears are conical gears in the car differential. The car differential is equipped with two axle gears. The car has two drive shafts, which are connected to the two axle gears and drive the left and right wheels respectively. Axle gears are installed on the differential assembly. The car drive axle shaft has one end connected to the axle gear with a spline, and the other end is connected to the car drive wheel.

[0003] In order to improve the mechanical properties of the side gear, it is often necessary to heat treat the side gear workpiece obtained by casting. Heat treatment is to heat the metal or alloy to a given temperature and keep it for a period of time, and then cool it at a selected speed and method to obtain the required microstructure and properties.

[0004] Although heat treatment can improve the mechanical properties of the side gear, it will cause a certain deformation of the side gear during the processing. The deformation of the spline groove on the inner wall of the side gear will affect the accuracy of its subsequent assembly connection with the automobile drive shaft. Utility Model Content

[0005] In order to improve the problem that the deformation of the spline groove on the inner wall of the half-shaft gear after heat treatment will affect the subsequent assembly connection accuracy between it and the automobile transmission shaft, the present application provides a stamping device for improving the processing accuracy of the spline groove of the half-shaft gear.

[0006] The present application provides a punching device for improving the machining accuracy of the spline groove of the axle gear, which adopts the following technical solution:

[0007] A stamping device for improving the processing accuracy of the spline groove of a half-shaft gear comprises a press having a processing table and a pressure block driven by hydraulic pressure, and is characterized in that it also comprises a positioning sleeve and a processing tool, wherein the positioning sleeve is detachably fixed on the processing table, a half-shaft gear to be processed is placed at the bottom of the positioning sleeve, a processing tool is placed above the half-shaft gear, and the processing tool is located on the inner side of the positioning sleeve, and the pressure block is movably arranged directly above the processing tool by hydraulic drive, so that the processing tool completes the processing of the spline groove on the inner wall of the half-shaft gear under the guidance of the positioning sleeve and the stamping of the pressure block.

[0008] Furthermore, the positioning sleeve includes a chassis and a sleeve, the sleeve is formed on the top of the chassis, and the top of the sleeve has an opening, the front of the sleeve is formed with an operating groove that communicates with the inner cavity of the sleeve, a plurality of circular holes are formed on the chassis, bolts that connect and fix the chassis to the processing table are arranged in the circular holes, and the height of the sleeve is less than the sum of the heights of the half-axle gear and the processing tool.

[0009] Furthermore, the machining tool comprises a main shaft body, on the outer wall of which a plurality of raised rings are formed which are arranged at equal intervals along the axial direction, and on the outer wall of each of the raised rings a plurality of machining teeth which match the spline grooves are formed along the radial direction.

[0010] Furthermore, an extended shaft body with a diameter smaller than that of the main shaft body is formed at the lower end of the main shaft body, and a first limiting protrusion and a second limiting protrusion are respectively formed on the top of the outer wall and the bottom of the outer wall of the extended shaft body, and the outer diameters of the first limiting protrusion and the second limiting protrusion are both larger than the diameter of the extended shaft body, and the extended shaft body moves through the processing table, and the first limiting protrusion and the second limiting protrusion are respectively located above and below the processing table.

[0011] Furthermore, a spline portion is formed on the top of the outer wall of the main shaft.

[0012] The beneficial technical effect of the present application is: through the coordinated arrangement of a press, a positioning sleeve and a processing tool, the equipment can punch the spline groove on the inner wall of the half-shaft gear after heat treatment, thereby improving the processing accuracy of the spline groove on the inner wall of the half-shaft gear, making the produced and processed half-shaft gear more accurate during installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a stamping device for improving the machining accuracy of axle gear spline grooves according to an embodiment of the present application;

[0014] Figure 2 is a schematic structural diagram of a positioning sleeve in an embodiment of the present application;

[0015] Figure 3 is a schematic structural diagram of a machining tool in an embodiment of the present application;

[0016] Figure 4 is based on Figure 1 Schematic diagram of the structure of the half-shaft gear processed by the equipment.

[0017] Figure numerals: 10, press machine; 11, processing table; 12, pressing block; 20, positioning sleeve; 21, chassis; 22, sleeve; 23, operating groove; 30, processing tool; 31, main shaft body; 32, raised ring; 33, processing tooth; 34, extension shaft body; 35, first limiting protrusion; 36, second limiting protrusion; 37, spline part; 40, half-shaft gear; 41, spline groove. DETAILED DESCRIPTION

[0018] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0019] The present application embodiment discloses a punching device for improving the machining accuracy of the spline groove of the axle gear. Figure 1 and Figure 4 A punching device for improving the machining accuracy of the spline groove of a half-axle gear comprises a press machine 10, a positioning sleeve 20 and a machining tool 30. The press machine 10 has a machining table 11 on which the positioning sleeve 20, the machining tool 30 and the half-axle gear 40 can be placed. The press machine 10 also has a pressing block 12 driven by a hydraulic system, and the half-axle gear 40 can be machined by moving the pressing block 12 in cooperation with the machining tool 30. During machining, the positioning sleeve 20 is detachably fixed on the machining table 11 by bolts, and the half-axle gear 40 to be machined is placed at the bottom of the positioning sleeve 20; then the machining tool 30 is placed above the half-axle gear 40, and the machining tool 30 is located inside the positioning sleeve 20; then the pressing block 12 driven by hydraulic pressure and movably arranged just above the machining tool 30 is pressed down and force is applied to the machining tool 30, so that the machining tool 30 completes the processing of the spline groove 41 on the inner wall of the half-axle gear 40 under the guidance of the positioning sleeve 20 and the punching of the pressing block 12.

[0020] See also Figure 2 The positioning sleeve 20 includes a chassis 21 and a sleeve 22. A plurality of circular holes are formed on the chassis 21. When fixing the positioning sleeve 20, bolts can be placed in the circular holes, and the chassis 21 is connected and fixed to the processing table 11 after tightening the bolts. The sleeve 22 is formed on the top of the chassis 21, and has an opening on the top of the sleeve 22. An operating groove 23 communicating with the inner cavity of the sleeve 22 is formed on the front of the sleeve 22, so that the processing personnel can use the opening and the operating groove 23 to complete the placement and removal of the workpiece and the processing tool 30. The height of the sleeve 22 is less than the sum of the heights of the half-shaft gear 40 and the processing tool 30, so that the pressure block 12 can apply force to the processing tool 30 when pressing down, so that the processing tool 30 processes the spline groove 41 on the inner wall of the half-shaft gear 40.

[0021] See also Figure 3 The machining tool 30 includes a main shaft body 31, and a plurality of raised rings 32 are formed on the outer wall of the main shaft body 31 and arranged at equal intervals along the axial direction thereof. A plurality of machining teeth 33 matching with the spline groove 41 are formed on the outer wall of each raised ring 32 along the radial direction thereof. When the machining tool 30 moves downward, the spline groove 41 on the inner wall of the side gear 40 can be punched and adjusted by the machining teeth 33. An extended shaft body 34 having a diameter smaller than that of the main shaft body 31 is also formed at the lower end of the main shaft body 31, and a first limiting protrusion 35 and a second limiting protrusion 36 are respectively formed on the top and the bottom of the outer wall of the extended shaft body 34. The extension shaft 34 moves through the processing table 11, and the first limit protrusion 35 and the second limit protrusion 36 are respectively located above and below the processing table 11. The outer diameters of the first limit protrusion 35 and the second limit protrusion 36 are both larger than the diameter of the extension shaft 34, so that during the movement of the processing tool 30, the first limit protrusion 35 and the second limit protrusion 36 can be used to limit its moving distance.

[0022] In this embodiment, a spline portion 37 is also formed on the top of the outer wall of the main shaft body 31. The setting of the spline portion 37 allows the processing tool 30 to be connected to the hydraulic system of the press 10, so that it can be driven to directly stamp and adjust the spline groove 41 on the inner wall of the half-shaft gear 40 without using the pressing block 12.

[0023] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A punching device for improving the machining accuracy of the spline groove of axle gear, characterized in that: A press (10) comprising a processing table (11) and a hydraulically driven pressing block (12), and also comprising a positioning sleeve (20) and a processing tool (30), wherein the positioning sleeve (20) is detachably fixed to the processing table (11), a half-shaft gear (40) to be processed is placed at the bottom of the positioning sleeve (20), the processing tool (30) is placed above the half-shaft gear (40), and the processing tool (30) is located inside the positioning sleeve (20), and the pressing block (12) is hydraulically driven and arranged directly above the processing tool (30), so that the processing tool (30) completes processing of a spline groove (41) on the inner wall of the half-shaft gear (40) under the guidance of the positioning sleeve (20) and the stamping of the pressing block (12).

2. A punching device for improving the machining accuracy of the spline groove of the side gear according to claim 1, characterized in that: The positioning sleeve (20) comprises a base (21) and a sleeve (22), wherein the sleeve (22) is formed on the top of the base (21), and the top of the sleeve (22) has an opening, and the front surface of the sleeve (22) is formed with an operating groove (23) that communicates with the inner cavity of the sleeve (22).

3. A punching device for improving the machining accuracy of the spline groove of the side gear according to claim 2, characterized in that: A plurality of circular holes are formed on the chassis (21), and bolts for connecting and fixing the chassis (21) and the processing table (11) are arranged in the circular holes.

4. A punching device for improving the machining accuracy of axle gear spline grooves according to claim 2 or 3, characterized in that: The height of the sleeve (22) is less than the sum of the heights of the half-shaft gear (40) and the machining tool (30).

5. A punching device for improving the machining accuracy of the spline groove of axle gear according to claim 1, characterized in that: The machining tool (30) comprises a main shaft body (31), the outer wall of which is formed with a plurality of raised rings (32) arranged at equal intervals along its axial direction, and the outer wall of each raised ring (32) is formed with a plurality of machining teeth (33) matching with the spline groove (41) along its radial direction.

6. A punching device for improving the machining accuracy of the spline groove of the side gear according to claim 5, characterized in that: The lower end of the main shaft body (31) is also formed with an extension shaft body (34) whose diameter is smaller than that of the main shaft body (31); the top and bottom of the outer wall of the extension shaft body (34) are respectively formed with a first limiting protrusion (35) and a second limiting protrusion (36); the outer diameters of the first limiting protrusion (35) and the second limiting protrusion (36) are both larger than the diameter of the extension shaft body (34).

7. A punching device for improving the machining accuracy of the spline groove of the side gear according to claim 6, characterized in that: The extension shaft (34) movably passes through the processing table (11), and the first limiting protrusion (35) and the second limiting protrusion (36) are respectively located above and below the processing table (11).

8. A punching device for improving the machining accuracy of axle gear spline grooves according to any one of claims 5 to 7, characterized in that: A spline portion (37) is also formed on the top of the outer wall of the main shaft body (31).

Images