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Tooth -shaped part rolling spinning forming device and method

A technology of spinning forming and tooth shape, which is applied in the processing of tooth-shaped parts and the field of rolling-spinning device for tooth-shaped parts. Achieve the effects of simplifying the shape design of the tooth profile, improving the quality, and avoiding the problem of blank biting

Active Publication Date: 2019-08-02
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the axis of the roller and the axis of the blank are constantly approaching during the forming process, the pitch is constantly changing. Therefore, the special tooth profile of the roller and the parameters of the rolling and spinning process must be designed in combination with the characteristics of the rolling and spinning process to improve the forming process. Accuracy of toothed parts
It not only complicates the design of the roller tooth shape, but also faces the problem of the roller biting into the blank, and the forming quality of the part is relatively poor
The industry has been looking for a method to control the rotation of the blank during the rolling and spinning forming process of toothed parts to ensure accurate tooth division, but due to the complex structure of the device, a feasible method and forming device have not been proposed

Method used

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  • Tooth -shaped part rolling spinning forming device and method
  • Tooth -shaped part rolling spinning forming device and method
  • Tooth -shaped part rolling spinning forming device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment provides a rolling and spinning forming device for cup-shaped external gears, figure 1 It is a structural schematic diagram of a cup-shaped external gear member rolling and spinning forming device provided in Example 1. The device is installed on the machine bed and includes a main shaft 1, a mandrel 2, an active synchronous gear 3, a passive synchronous gear 4, Passive synchronous gear support 5, roller 6, roller support 7, retractable constant velocity universal joint assembly 8, spring mechanism 9, servo motor assembly 10; the mandrel 2 is installed on the upper end surface of the main shaft 1, and the active synchronous gear 3 is installed on the main shaft 1 and is located below the mandrel 2; the passive synchronous gear support 5 and the roller support 7 are both L-shaped supports, and the passive synchronous gear support 5 includes a first vertical plate and a first bottom plate. The first vertical plate and the first bottom plate are integrally ...

Embodiment 2

[0045] This embodiment provides a rolling spinning forming device for a solid external gear, such as figure 2 As shown, the device is installed on the bed of the machine tool, including the main shaft 1, the active synchronous gear 3, the passive synchronous gear 4, the passive synchronous gear support 5, the roller 6, the roller support 7, and the telescopic constant velocity universal joint assembly 8 , spring mechanism 9, servo motor assembly 10, current limiting block 13, pressing block 14; said pressing block 14 compresses the blank used for preparing tooth-shaped parts on the current limiting block 13, and the top of said main shaft 1 is provided with a limiting Flow block 13, the diameter of the flow limiting block 13 is larger than the outer diameter of the final formed solid external gear, and the diameter of the pressing block 14 is the same as the diameter of the flow limiting block 13, which acts on the solid disc-shaped blank 12, during the tooth profile forming ...

Embodiment 3

[0048] This embodiment provides a roll-spinning device for internal and external gear parts, which is the same as the roll-spinning device for cup-shaped external gear parts provided in Embodiment 1, except that the outer surfaces of the mandrel 2 and the roller 6 are both It has a tooth shape that matches the internal and external tooth parts.

[0049] This embodiment also provides a method for rolling and spinning of internal and external gear parts using the device, and the method includes the same steps as the method for rolling and spinning of cup-shaped external gear parts in Embodiment 1. The difference is that under the condition that the passive synchronous gear 4 is fully meshed with the active synchronous gear 3, the roller 6 is installed to ensure that the phase angle between the roller 6 and the mandrel 2 is precisely aligned, such as image 3 shown.

[0050] Figure 4 Shown is a schematic structural view of the internal and external tooth parts formed by the me...

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PUM

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Abstract

The invention discloses a tooth-shaped part rolling spinning forming device and a method, The device is characterized in that a workblank, a core die and a driving synchronous gear, wherein the workblank, the core die and the driving synchronous gear are installed on a machine tool main shaft; a driven synchronous gear and an idler wheel are arranged on the side surface of the main shaft in parallel; the driven synchronous gear and the idler wheel are connected through telescopic constant velocity universal joint, the driven synchronous gear and the idler wheel are ensured to rotate at the same angular velocity and can move in the radial direction, wherein the driven synchronous gear is driven by a spring mechanism in the radial direction, and the idler wheel is driven by a servo motor assembly in the radial direction. The method can be used for keeping the rotating speed of a blank and the rotating speed of the idler wheel to be matched according to the tooth number ratio during the radial movement of the idler wheel to the blank and the gradual forming process, so that uniform tooth separation of the blank can be realized. During the rolling spinning forming process, the two synchronous gears are firstly fully meshed, and then the idler wheel is gradually pressed into the blank. According to the method, the forming quality of the tooth-shaped part can be effectively improved,the outer gear part can be machined, and the inner gear part and the outer gear part can be machined.

Description

technical field [0001] The invention relates to the processing of tooth-shaped parts, belongs to the technical field of plastic forming, and in particular relates to a rolling and spinning forming device and method of tooth-shaped parts. Background technique [0002] The processing of general tooth-shaped parts is divided into cutting processing and rolling spinning forming. Due to the low production efficiency of cutting processing and the low strength of the parts caused by cutting the fibrous structure of the blank, it is mostly replaced by rolling spinning forming. However, in conventional rolling and spinning of toothed parts, the rollers are actively rotating, while the blanks are free to rotate. However, since the axis of the roller and the axis of the blank are constantly approaching during the forming process, the pitch is constantly changing. Therefore, the special tooth profile of the roller and the parameters of the rolling and spinning process must be designed i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/16B21D43/00
CPCB21D22/16B21D43/003B21D53/28B21H5/02
Inventor 夏琴香程秀全肖刚锋边旭阳
Owner SOUTH CHINA UNIV OF TECH