Driving gear machining clamp
By introducing a combined structure of a pressure plate and a clamping bolt into the active gear machining fixture, the problem of the hydraulic clamp being unable to clamp effectively is solved, and stable clamping of the workpiece and improvement of machining accuracy are achieved.
Patent Information
- Application Number
- CN202422804262.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-18
AI Technical Summary
In the prior art, when the hydraulic gripper contacts the cylindrical surface of the workpiece, the workpiece is likely to slip and cannot be effectively clamped.
A driving gear machining fixture was designed, which adopts a combined structure of a pressure plate and a clamping bolt. The clamping part of the pressure plate is an arc-shaped depression. Through the cooperation of the clamping bolt and the anti-rotation bolt, the contact area and static friction between the workpiece and the pressure plate are increased to prevent slipping.
It effectively prevents the workpiece from slipping during the drilling process, ensures stable clamping of the workpiece, and improves machining accuracy and efficiency.
Smart Images
Figure CN223353656U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of gear processing, and particularly relates to a fixture for processing an active gear. Background Art
[0002] like Figure 1 During the production process of the short shaft driving gear (hereinafter referred to as the workpiece) 90, the end face of the small head needs to be axially drilled. When drilling, a fixture is required to clamp the workpiece 90.
[0003] like Figure 2-3 The fixture includes a base 10, which fixes a V-shaped plate 11 and a hydraulic clamp 12 through a vertical plate. When in use, the workpiece 90 is placed on the base 10, with the left side close to the V-shaped plate 11, and then the outer circle of the workpiece 90 (the cylindrical side of the workpiece) is clamped by the hydraulic clamp 12. Utility Model Content
[0004] The technical problem to be solved by the present invention is that during machining, because the hydraulic clamp 12 and the workpiece 90 are in cylindrical contact, sometimes they cannot be clamped tightly, causing the workpiece to slip (that is, the workpiece rotates with the drill bit).
[0005] The technical solution of the utility model is specifically as follows:
[0006] A driving gear processing fixture includes a base, which fixes a V-shaped plate and a hydraulic clamp through a vertical plate. A screw hole B is provided on the base, and a threaded sleeve is fixed on the base. The central control part of the sleeve is a screw hole C; a pressure plate is provided opposite the V-shaped plate, the front section of the pressure plate is a clamping part, and the rear end is provided with a screw hole A. A strip hole is provided between the clamping part and the screw hole A, and a clamping bolt is passed through the strip hole. The lower end of the clamping bolt is threadedly engaged with the screw hole B, and an anti-rotation bolt is passed through the screw hole A, and the two are threadedly engaged.
[0007] The compression bolt is sleeved with a compression spring, which is located between the base and the pressure plate.
[0008] The pressing portion of the pressing plate is provided with an arc-shaped recess.
[0009] Compared with the prior art, the technical effect of the present invention is that the present invention is provided with a pressure plate, which applies pressure to the installation base surface of the workpiece. The contact surface is a plane, which can generate a large static friction force and prevent the workpiece from slipping. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 is a schematic diagram of a prior art workpiece.
[0011] Figure 2 It is a schematic diagram of a prior art fixture.
[0012] Figure 3 yes Figure 2Schematic diagram of the top view of the V-shaped plate.
[0013] Figure 4 It is a schematic diagram of the present utility model.
[0014] Figure 5 yes Figure 4 Schematic diagram of the top view of the pressure plate in FIG. DETAILED DESCRIPTION
[0015] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments thereof.
[0016] like Figure 4-5 A driving gear processing fixture includes a base 10, and the base 10 fixes a V-shaped plate 11 and a hydraulic clamp 12 through a vertical plate.
[0017] The base 10 is provided with a screw hole B13 , a threaded sleeve 14 is fixed on the base 10 , and the central control portion of the sleeve 14 is a screw hole C15 .
[0018] A pressure plate 20 is provided opposite the V-shaped plate 11. The front section of the pressure plate 20 is a clamping part 23, and the rear end is provided with a screw hole A22. A strip hole 21 is provided between the clamping part and the screw hole A22. A clamping bolt 30 is passed through the strip hole 21. The lower end of the clamping bolt 30 is threadedly engaged with the screw hole B13, and an anti-rotation bolt 32 is passed through the screw hole A22, and the two are threadedly engaged.
[0019] When no workpiece is clamped, in order to keep the pressure plate horizontal, the compression bolt 30 is sleeved with a compression spring 31 , and the compression spring 31 is located between the base 10 and the pressure plate 20 .
[0020] In order to contact the workpiece as much as possible, the pressing portion 23 of the pressing plate 20 is provided with an arc-shaped recess.
[0021] Its working principle is:
[0022] S1, when in use, the pressing plate 20 is located at the rear side (that is, Figure 4 The right side of the workpiece 90 is positioned on the base 10, with the left side close to the V-shaped plate 11. The outer edge of the workpiece 90 (the cylindrical side of the workpiece) is then clamped by the hydraulic gripper 12. This is conventional technology.
[0023] S2, push the pressing plate 20 forward (that is, Figure 4 The left side in the figure moves so that the arc-shaped recess of the clamping portion 23 contacts the workpiece 90. During this process, the lower end of the clamping bolt 30 is always in the screw hole B13 and does not move. The relative displacement between the pressure plate 20 and the clamping bolt 30 is solved by "the clamping bolt 30 sliding in the strip hole 21".
[0024] S3, screw the anti-rotation bolt 32 into the screw hole C15, and screw the clamping bolt 30 so that the clamping portion 23 of the clamping plate 20 clamps the workpiece 90 (see Figure 4 middle red arrow).
[0025] S4, drilling. This is a prior art and will not be described in detail.
[0026] S5. Loosen the clamping bolt 30, loosen the anti-rotation bolt 32, disengage it from the screw hole C15, and pull the pressing plate 20 backward to the rear side, leaving space for placing the workpiece 90.
[0027] S6. Release the hydraulic gripper 12 and remove the workpiece 90.
[0028] For other contents, please refer to the prior art.
[0029] The above description is only the preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the scope of protection of the present invention.
Claims
1. A driving gear processing fixture, comprising a base (10), wherein the base (10) fixes a V-shaped plate (11) and a hydraulic clamp (12) via a vertical plate, and is characterized in that: The base (10) is provided with a screw hole B (13), a threaded sleeve (14) is fixed on the base (10), and the central control portion of the sleeve (14) is a screw hole C (15); A pressing plate (20) is provided opposite to the V-shaped plate (11). The front section of the pressing plate (20) is a pressing portion (23), and a screw hole A (22) is provided at the rear end. A strip hole (21) is provided between the pressing portion and the screw hole A (22). A pressing bolt (30) is passed through the strip hole (21). The lower end of the pressing bolt (30) is threadedly engaged with the screw hole B (13). An anti-rotation bolt (32) is passed through the screw hole A (22), and the two are threadedly engaged.
2. The active gear machining fixture according to claim 1, characterized in that: The compression bolt (30) is sleeved with a compression spring (31), and the compression spring (31) is located between the base (10) and the pressure plate (20).
3. The active gear machining fixture according to claim 2, characterized in that: The pressing portion (23) of the pressing plate (20) is provided with an arc-shaped recess.