A tooling fixture for chamfering gear machining

Abstract

This application relates to the field of gear chamfering technology, and in particular to a tooling fixture for gear chamfering, including a turntable with a mounting shaft fixedly mounted on it. An inner support mechanism is provided above the mounting shaft. The inner support mechanism includes a base, a connecting rod, and an inner support plate. The inner support plate is fixedly connected to the connecting rod, and the connecting rod is slidably connected to the base. The base is fixedly mounted on the upper end face of the mounting shaft and is also connected to a drive assembly. By setting the inner support mechanism, automatic adaptive clamping of gears with different inner diameters can be achieved. Using this inner support mechanism to clamp and fix gears effectively avoids the need for frequent fixture changes or manual matching of limit pins for gears with different inner diameters in the prior art, reduces gear clamping preparation time, and improves the overall efficiency of gear chamfering.

Description

Technical Field

[0001] This application relates to the field of gear chamfering technology, and in particular to a tooling fixture for gear chamfering. Background Technology

[0002] During gear manufacturing, chamfering is typically required on the tooth tip, tooth end, and tooth surface. Chamfering the tooth tip removes sharp burrs, preventing scratches on other components during assembly and optimizing stress distribution during heat treatment, thus reducing the risk of cracking. Chamfering the tooth end eliminates sharp burrs, preventing deformation or damage caused by bumps during processing or transportation. Chamfering the tooth surface eliminates stress concentration, reduces meshing impact and noise, and extends service life.

[0003] When chamfering gears, a fixture is needed to hold the gear before a chamfering cutter is used to chamfer it. However, existing fixtures for chamfering gears typically require changing to fixtures of different diameters for gears with different inner diameters, resulting in complex operations, long processing times, and low processing efficiency. While the utility model patent application with application number 202222147861.5—a fixture for chamfering gear tooth profiles—effectively reduces the frequency of fixture changes by setting multiple sets of limiting posts with different diameters to accommodate gears with different inner diameters, it still requires manual matching and fitting of the gear into the corresponding set of limiting posts for positioning and clamping according to the inner diameter of the gear to be processed, thus the processing efficiency still needs improvement. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a tooling fixture for chamfering gears. The technical problem it solves is that existing gear chamfering fixtures have low matching efficiency for gears of different diameters, thus affecting overall processing efficiency. The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A tooling fixture for chamfering gear machining includes:

[0006] A turntable, wherein a mounting shaft is fixedly provided on the upper end face of the turntable;

[0007] An internal support mechanism includes a base, a connecting rod, and an internal support plate. The internal support plate is fixedly connected to the connecting rod, and the connecting rod is slidably connected to the base. The base is fixedly mounted on the upper end face of the mounting shaft.

[0008] A drive assembly, which is connected to the base.

[0009] Furthermore, a fixed shaft is fixedly provided at the center of the upper end face of the base, and a sliding groove is provided on the upper end face of the base.

[0010] Furthermore, the drive assembly includes a motor, a first gear, and a second gear. The second gear is rotatably mounted on a fixed shaft and meshes with the first gear. The first gear is fixedly mounted with a drive shaft, which passes through the base and is fixedly connected to the output end of the motor.

[0011] Furthermore, the second gear has several arc-shaped grooves along its circumference, and a drive column is provided in the arc-shaped groove. The lower end face of the drive column is fixedly connected to the connecting rod.

[0012] Furthermore, the inner support plate is arc-shaped, and a protective pad is fixedly provided on the outer end face of the inner support plate.

[0013] Furthermore, an annular groove is provided on the upper end face of the mounting shaft, a protective cylinder is inserted into the annular groove, and several grooves are provided on the side circumference of the protective cylinder. Sealing gaskets are provided on the inner wall of the annular groove and the side wall of the groove.

[0014] The beneficial effects of this utility model are as follows: by setting an internal support mechanism, automatic adaptive clamping of gears with different inner diameters can be achieved; after the gear is placed on the upper end face of the mounting shaft, the drive assembly drives the connecting rod to move outward along the slide groove, thereby synchronously driving the internal support plate to expand outward until the internal support plate is in close contact with the inner wall of the gear to apply clamping force, thereby clamping and fixing the gear; by using this internal support mechanism to clamp and fix the gear, the need to frequently change the fixture or manually match the limiting post for gears with different inner diameters in the prior art is effectively avoided, reducing the gear clamping preparation time and improving the overall efficiency of gear chamfering processing.

[0015] By installing a protective sleeve, the drive assembly and areas susceptible to metal debris can be effectively protected. This prevents metal debris generated during chamfering operations from splashing into the drive assembly, thus preventing the debris from contaminating, jamming, or causing wear to the drive assembly. Connecting the protective sleeve to the mounting shaft facilitates quick disassembly of the protective sleeve, which is beneficial for the daily maintenance of the drive assembly. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of a portion of the three-dimensional structure of this utility model.

[0018] Figure 3 This is a schematic diagram of a portion of the three-dimensional structure of this utility model (protective cylinder).

[0019] Figure 4 This is a top view of part of the structure of this utility model (turntable and mounting shaft).

[0020] Figure 5 This is a top view of the present invention (excluding the protective cylinder).

[0021] In the picture:

[0022] 1. Turntable; 2. Mounting shaft; 3. Internal support mechanism; 31. Base; 32. Connecting rod; 33. Internal support plate; 4. Drive assembly; 41. Motor; 42. First gear; 43. Second gear; 44. Drive shaft; 5. Fixed shaft; 6. Slide groove; 7. Arc groove; 8. Drive column; 9. Protective pad; 10. Circular groove; 11. Protective cylinder; 12. Groove; 13. Sealing gasket. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the utility model will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this utility model. The specific implementation scheme of this utility model is as follows:

[0024] like Figures 1-5 As shown, a tooling fixture for chamfering gear machining includes a turntable 1. A mounting shaft 2 is fixedly mounted on the upper surface of the turntable 1. An inner support mechanism 3 is mounted above the mounting shaft 2. The inner support mechanism 3 includes a base 31, a connecting rod 32, and an inner support plate 33. The inner support plate 33 is fixedly connected to the connecting rod 32, and the connecting rod 32 is slidably connected to the base 31. The base 31 is fixedly mounted on the upper surface of the mounting shaft 2, and a drive assembly 4 is also connected to the base 31. By setting the inner support mechanism 3, automatic adaptive clamping of gears with different inner hole diameters can be achieved.

[0025] It should be noted that a fixed shaft 5 is fixedly installed at the center of the upper end face of the base 31, and a sliding groove 6 is provided on the upper end face of the base 31; the sliding groove 6 mainly serves to guide the connecting rod 32 and ensure the movement direction of the connecting rod 32 and the inner support plate 33.

[0026] It should be noted that the drive assembly 4 includes a motor 41, a first gear 42, and a second gear 43. The second gear 43 is rotatably mounted on a fixed shaft 5 and meshes with the first gear 42. The first gear 42 is fixedly mounted with a drive shaft 44, which passes through the base 31 and the mounting shaft 2 in sequence and is fixedly connected to the output end of the motor 41. The drive shaft 44 is rotatably connected to both the base 31 and the mounting shaft 2. The motor 41 is fixedly mounted on a motor mounting seat (not shown in the figure) below the base 31. The motor mounting seat is located inside the mounting shaft 2, which is hollow inside. The second gear 43 has several arc-shaped grooves 7 along its circumference. A drive column 8 is provided in the arc-shaped grooves 7, and the lower end face of the drive column 8 is fixedly connected to the connecting rod 32. This structure is mainly used to drive the reciprocating motion of the connecting rod 32 and the inner support plate 33 to achieve clamping and fixing of gears with different inner diameters.

[0027] It should be noted that the inner support plate 33 is arc-shaped, and a protective pad 9 is fixedly provided on the outer end face of the inner support plate 33; the protective pad 9 is mainly used to reduce the friction between the inner support plate 33 and the inner wall of the gear hole.

[0028] It should be noted that an annular groove 10 is provided on the upper end face of the mounting shaft 2, and a protective cylinder 11 is inserted into the annular groove 10. Several grooves 12 are provided on the side circumference of the protective cylinder 11. Sealing gaskets 13 are provided on the inner wall of the annular groove 10 and the side walls of the grooves 12. The purpose of the grooves 12 is to allow the connecting rod 32 to pass through. By providing the protective cylinder 11, the drive assembly 4 and areas susceptible to metal debris can be effectively protected. This can prevent metal debris generated during the operation of the chamfering tool from splashing into the drive assembly 4, thereby preventing the debris from contaminating, jamming, or wearing the drive assembly 4. Connecting the protective cylinder 11 to the mounting shaft 2 facilitates the quick disassembly of the protective cylinder 11 and is beneficial for the daily maintenance of the drive assembly 4.

[0029] The working principle and process of this utility model are as follows:

[0030] Place the gear to be chamfered onto the upper end face of the mounting shaft 2. The gear's inner hole is fitted onto the inner support plate 33. Start the motor 41, which rotates clockwise and transmits power to the drive shaft 44. The drive shaft 44 begins to rotate, causing the first gear 42 to rotate clockwise. The rotation of the first gear 42 drives the second gear 43, which meshes with it, to rotate counterclockwise around the fixed shaft 5. The rotation of the second gear 43 causes the drive column 8 to move from the end near the fixed shaft 5 to the end near the teeth of the second gear 43 within the arc-shaped groove 7. The movement of the drive column 8 drives the connecting rod 32 to move outward along the slide groove 6. The inner support plate 33, which is fixedly connected to the connecting rod 32, also expands outward until the inner support plate 33 is in close contact with the inner wall of the gear's inner hole and clamps and fixes the gear. Then, the motor 41 stops. The turntable 1 drives the mounting shaft 2 to rotate, simultaneously causing the gear clamped by the inner support mechanism 3 to rotate. Finally, an external chamfering tool is used to chamfer the gear.

[0031] After the gear chamfering is completed, start the drive motor 41 to reverse. The motor 41 drives the drive shaft 44 to rotate counterclockwise. The rotation of the drive shaft 44 will drive the first gear 42 to rotate counterclockwise. The rotation of the first gear 42 will drive the second gear 43, which is meshed with it, to rotate clockwise around the fixed shaft 5. The rotation of the second gear 43 will drive the drive column 8 to start moving in the arc groove 7 from the end near the teeth of the second gear 43 to the end near the fixed shaft 5. The movement of the drive column 8 will drive the connecting rod 32 to move inward along the slide groove 6. The inner support plate 33, which is fixedly connected to the connecting rod 32, will also retract inward until the connecting rod 32 moves to contact the inner end wall of the slide groove 6 near the fixed shaft 5. That is, the drive column 8 is at the end of the arc groove 7 near the fixed shaft 5. Stop the motor 41 and remove the gear that has been chamfered.

[0032] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Although this utility model has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of this utility model described herein.

Claims

1. A tooling fixture for chamfering gear machining, characterized in that, include: Turntable (1), wherein an mounting shaft (2) is fixedly provided on the upper end face of the turntable (1); The inner support mechanism (3) includes a base (31), a connecting rod (32) and an inner support plate (33). The inner support plate (33) is fixedly connected to the connecting rod (32), and the connecting rod (32) is slidably connected to the base (31). The base (31) is fixedly mounted on the upper end face of the mounting shaft (2). A drive assembly (4) for driving the extension and retraction of the inner support mechanism (3), the drive assembly (4) being connected to the base (31).

2. The tooling jig for machining chamfer of gear according to claim 1, characterized in that: A fixed shaft (5) is fixedly installed at the center of the upper end face of the base (31), and a sliding groove (6) is opened on the upper end face of the base (31).

3. The tooling fixture for machining chamfers of a gear according to claim 2, characterized in that: The drive assembly (4) includes a motor (41), a first gear (42) and a second gear (43). The second gear (43) is rotatably mounted on a fixed shaft (5). The second gear (43) meshes with the first gear (42). The first gear (42) is fixedly provided with a drive shaft (44). The drive shaft (44) passes through the base (31) and is fixedly connected to the output end of the motor (41).

4. The tooling fixture for machining chamfers of a gear according to claim 3, characterized in that: The second gear (43) has several arc-shaped grooves (7) along its circumference. A drive column (8) is provided in the arc-shaped groove (7), and the lower end face of the drive column (8) is fixedly connected to the connecting rod (32).

5. The tooling fixture of claim 1, wherein: The inner support plate (33) is arc-shaped, and a protective pad (9) is fixedly provided on the outer end face of the inner support plate (33).

6. The tooling fixture of claim 1, wherein: The upper end face of the mounting shaft (2) is provided with an annular groove (10), and a protective cylinder (11) is inserted into the annular groove (10). The protective cylinder (11) has several grooves (12) on its side circumference. The inner wall of the annular groove (10) and the side wall of the groove (12) are provided with sealing gaskets (13).

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