Tool for machining planetary gear

Abstract

The invention discloses a tool for machining a planetary gear, and belongs to the technical field of gear machining tools. The tool comprises a sliding block, the sliding block can be installed in a tool body in a sliding mode, and a support is installed at one end of the sliding block; one end of each clamping arm is rotatably arranged on the bracket, and the other end of each clamping arm can be clamped on the back conical surface of the planetary gear blank along with the movement of the sliding block; and the clamping arm is arranged around the tooth die and can be matched with the clamping end of the clamping arm to fix the blank. The technical purpose of the invention is to provide the tool for machining the planetary gear so as to improve the machining efficiency of the planetary gear.

Description

Technical Field

[0001] The invention belongs to the technical field of gear processing tools, and in particular relates to a tool for processing planetary gears. Background Art

[0002] In the field of gear processing, the processing of planetary gears after precision forging usually adopts the process of drilling - turning back tapers - turning inner holes and spherical surfaces. This processing procedure is scattered, the labor intensity is high, and the clamping is unsafe, prone to fatigue, and time-consuming, resulting in low production efficiency.

[0003] Therefore, a new tooling fixture is needed for machining planetary gears. Summary of the invention

[0004] In view of the above-mentioned problems, the technical purpose of the present invention is to provide a tool for machining planetary gears to improve the machining efficiency of planetary gears.

[0005] The present invention is achieved through the following technical solutions:

[0006] The tooling technical solution for machining planetary gears of the present application includes:

[0007] A slider, which can be slidably installed in the tool body, and a bracket is installed at one end of the slider;

[0008] A plurality of clamping arms, one end of which is rotatably arranged on the bracket, and the other end of which can be clamped on the back cone surface of the planetary gear blank as the slider moves;

[0009] The tooth die is surrounded by the clamping arm, and can cooperate with the clamping end of the clamping arm to fix the blank.

[0010] In some embodiments, an extension portion is provided at one end of the sliding block close to the tooth mold, and the extension portion can extend into the tooth mold.

[0011] In some embodiments, a curved guide structure is provided on the clamping arm, a positioning guide column is installed in the guide structure, and the slider moves back and forth so that the clamping end of the clamping arm clamps or releases the blank.

[0012] In some embodiments, the L or substantially L-shaped configuration.

[0013] In some embodiments, the tooth mold has a clamping portion clamped on the tooth surface of the planetary gear blank; and

[0014] A through hole a is provided for accommodating the extension portion, the through hole a is aligned with the center position of the planetary gear blank, and a cavity is formed inside the tooth die for connecting the through hole a with the clamping portion.

[0015] In some embodiments, a through hole b is provided in the extension portion for allowing high-pressure fluid to pass therethrough.

[0016] In some embodiments, the slider is further provided with a driving member for driving the slider to move.

[0017] In some embodiments, the bracket is sleeved on the outer periphery of the extension portion of the slider, and the bracket has branch parts corresponding to the number of the clamping arms.

[0018] In some embodiments, the slider is slidably disposed in a support body, and the support body is mounted on the tooling housing.

[0019] In some embodiments, a through hole c connected to the through hole a is further provided in the driving member.

[0020] The present invention proposes a tooling for processing planetary gears. The movement of the slider drives the movement of the bracket and the action of the clamping arm, so that the mechanism moves forward to press the blank and pulls backward to loosen the blank. This makes it convenient to perform drilling processing and rough and fine turning of spherical surfaces and inner holes on the blank, thereby improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the clamping state of the tooling of the present application;

[0022] Figure 2 It is a structural schematic diagram of the tooling of the present application in a loosened state. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0024] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The present invention is described in detail below in conjunction with the accompanying drawings.

[0027] Figure 1 This is a schematic cross-sectional structure diagram of the clamping state of the tooling of this application. Figure 2 This is a schematic diagram of the cross-sectional structure of the tooling in the loosened state of the present application, as shown in FIG. Figure 1 and Figure 2 As shown, a tool for machining planetary gears is shown, comprising: a slider 4, which can be slidably mounted in a tool body, and a bracket 3 is mounted on one end of the slider 4; a plurality of clamping arms 7, one end of which is rotatably mounted on the bracket 3, and the other end of which can be clamped on the back cone surface of the planetary gear blank as the slider moves;

[0028] Specifically, the slider 4 is usually set to move in the horizontal direction. Of course, it can also be set to move vertically or at any angle to the horizontal direction. The slider 4 is installed on / in the support body 2 to support the slider 4 to move back and forth. The support body 2 is installed on the tooling shell 5. The bracket 3 can be set as a whole with the slider 4, and can also be installed on the slider 4 by screws. The bracket 3 has branch parts extending in all directions for installing the clamping arm 7. The bracket 3 has branch parts corresponding to the number of the clamping arms 7. The clamping arm 7 can be rotatably mounted on the bracket 3 through a cylindrical pin 9.

[0029] The clamping arm 7 has one end connected to the branch portion of the bracket 3 and the other end is provided with a portion for holding the blank 8.

[0030] In some embodiments, when the bracket 3 and the slider 4 are separately provided, the bracket 3 and the support body 2, the bracket 3 is sleeved on the outer periphery of the extension portion 41 of the slider 4. Specifically, the support body 2 can be a separate component, such as a connecting plate structure with a hole in the middle for carrying the sliding block 4, the connecting plate connects the tooling housing 5 with the flange 1, and the flange 1 is installed on the main shaft of the lathe. In some embodiments, the tooth mold 6, the clamping arm 7 is arranged around the tooth mold 6, and can cooperate with the clamping end of the clamping arm 7 to fix the blank.

[0031] In some embodiments, an extension portion 41 is provided at one end of the slider 4 close to the tooth mold 6 , and the extension portion 41 can extend into the tooth mold 6 .

[0032] In some embodiments, the clamping arm 7 is provided with a curved guide structure 71, and a positioning guide column 72 is installed in the guide structure 71, and the slider 4 moves back and forth so that the clamping end of the clamping arm 7 clamps or releases the blank. Specifically, the guide structure 71 has a suitable length, and the guide structure 71 is a guide hole or slot structure, and the guide structure 71 has a hole or slot inclined from the clamping end to the mounting end mounted on the bracket 3, or the guide structure 71 is divided into two straight slots / holes, which are at an angle of 110 to 160 degrees to each other and have a circular arc transition, so that the front clamping arm of the mechanism presses the blank, and the rear clamping arm of the mechanism pulls and releases the blank, which can facilitate the drilling of the blank and the rough and fine turning of the spherical surface, inner hole and other processes, thereby improving efficiency.

[0033] In some embodiments, the clamping arm 7 is L-shaped or approximately L-shaped. Specifically, the clamping end of the clamping arm is approximately L-shaped or approximately L-shaped with the main body of the supporting arm 7. Generally, the clamping arm 7 can be set to 2-8, or more.

[0034] In some embodiments, the tooth mold 6 has a clamping portion 61 that is clamped on the tooth surface of the planetary gear blank 8; and has a through hole a62 that accommodates the extension portion 41, and the through hole a62 is directly opposite to the center position of the planetary gear blank 8, and a cavity 63 is formed inside the tooth mold 6 to connect the through hole a62 with the clamping portion 61.

[0035] In some embodiments, a through hole b42 is defined in the extension portion 41 , and the through hole b42 passes through the slider 4 .

[0036] In some embodiments, the slider 4 is further provided with a driving member 10 for driving the slider 4 to move.

[0037] In some embodiments, the driving member 10 is further provided with a through hole c101 connected to the through hole a62.

[0038] Specifically, the through hole a62, the through hole b42, and the through hole c101 are interconnected and coaxially arranged. High-pressure fluid is introduced into the through hole c101 to discharge the planetary gear processing. At the same time, a chip groove 64 is also provided on the peripheral wall of the tooth mold 6. The number of the chip grooves 64 can be 1-5 to solve the problem of chip removal of iron chips during processing.

[0039] Through the tooling of the technical solution of the present application, when the slider 4 moves in the direction away from the tooth die 6, the clamping arm 7 can completely move out of the back cone surface to be processed of the blank. At this time, the tailstock top of the equipment is tightened to complete the processing of the back cone surface of the blank; after the processing of the back cone surface of the blank is completed, when the driving member 10 drives the slider 4 to slide in the direction of the tooth die 6, the clamping arm 7 clamps the back cone surface of the blank, and after the tailstock of the equipment retreats, the drilling of the blank, rough and fine turning of the inner hole of the spherical surface and other processes can be completed. The original "drilling - turning back cone - turning inner hole, spherical surface" at least three processes are reduced to one clamping, which greatly shortens the time for loading and unloading workpieces and reduces the labor intensity of manual labor.

[0040] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of the technical contents suggested above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the present application.

Claims

1. A tool for machining planetary gears, characterized in that: include: A slider (4), wherein the slider (4) can be slidably mounted in the tool body, and a bracket (3) is mounted on one end of the slider (4); A plurality of clamping arms (7), one end of each clamping arm (7) being rotatably disposed on the bracket (3), and the other end of each clamping arm (7) being capable of clamping on the back cone surface of the planetary gear blank as the slider moves; The tooth die (6) is provided with the clamping arm (7) around the tooth die (6) and can cooperate with the clamping end of the clamping arm (7) to fix the blank.

2. The tooling for machining planetary gears according to claim 1, characterized in that: An extension portion (41) is provided at one end of the sliding block (4) close to the tooth mold (6), and the extension portion (41) can extend into the tooth mold (6).

3. The tooling for machining planetary gears according to claim 1, characterized in that: The clamping arm (7) is provided with a curved guide structure (71), a positioning guide column (72) is installed in the guide structure (71), and the slider (4) moves back and forth so that the clamping end of the clamping arm (7) clamps the blank or releases the blank.

4. The tooling for machining planetary gears according to claim 1 or 3, characterized in that: The clamping arm (7) is L-shaped or substantially L-shaped.

5. The tooling for machining planetary gears according to claim 1 or 2, characterized in that: The tooth mold (6) has a clamping portion (61) clamped on the tooth surface of the planetary gear blank (8); and A through hole a (62) is provided for accommodating the extension portion (41), the through hole a (62) being located directly opposite to the center of the planetary gear blank (8), a cavity (63) is formed inside the tooth die (6) for connecting the through hole a (62) with the clamping portion (61), and a chip removal groove is also provided on the peripheral wall of the tooth die (6).

6. The tooling for machining planetary gears according to claim 1 or 2, characterized in that: The extension portion (41) is provided with a through hole b (42) for allowing high-pressure fluid to pass through.

7. The tooling for machining planetary gears according to claim 1 or 2, characterized in that: The slider (4) is also provided with a driving member (10) for driving the slider to move.

8. The tooling for machining planetary gears according to claim 1 or 2, characterized in that: The bracket (3) is sleeved on the outer periphery of the extension portion (41) of the slider (4), and the bracket (3) has branch portions corresponding to the number of the clamping arms (7).

9. The tool for machining planetary gears according to claim 1 or 2, characterized in that: The slider (4) is slidably disposed in the support body (2), and the support body (2) is mounted on the tooling shell (5).

10. The tool for machining planetary gears according to claim 7, characterized in that: The driving member (10) is further provided with a through hole c (101) connected to the through hole a (62).

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