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Method for processing rack with epicycloidal tooth trace

A technology of epicycloid teeth and processing method, applied in the direction of elements with teeth, gear teeth, belt/chain/gear, etc., can solve the problems of impact, small coincidence, unsuitable for high-speed occasions, etc. The effect of large, small comprehensive curvature and low tool maintenance cost

Inactive Publication Date: 2010-09-29
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the straight tooth rack and the gear mesh, there is impact and the degree of overlap is small, so it is not suitable for high-speed occasions

Method used

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  • Method for processing rack with epicycloidal tooth trace
  • Method for processing rack with epicycloidal tooth trace
  • Method for processing rack with epicycloidal tooth trace

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Experimental program
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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Such as figure 1 As shown, when processing gear teeth, the cutter head 3 is installed on the moving carriage 4, the moving speed of the carriage 4 is V, and the cutter head 3 moves with the carriage 4 while rotating around its own axis. The index line of the rack blank 5 corresponds to the position of the cutterhead 3, and the speed of the rack blank 5 is equal to the speed V at which the carriage 4 moves.

[0019] Such as figure 2 , when the gear teeth are formed, the movement of the cutter head 3 relative to the carriage 4 is a pure rolling of a circle 6 with a radius r along a base line 7, so the point on the blade of the cutter head 3 relative to the carriage 4 has a long track Epicycloid, that is, the movement of a point on the cutter head 3 blades relative to the carriage 4 is processed to form the epicycloid tooth line 8 of the rack. The speed V at wh...

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Abstract

The invention provides a method for processing a rack with an epicycloidal tooth trace, which comprises the following steps: a cutter head is installed on a moving tool carriage, wherein the cutter head is in a two-layer structure, the inner cutter head on the upper layer is provided with inner cutters, the outer cutter head on the lower layer is provided with outer cutters, the inner cutter head and the outer cutter head are connected by a cross slide coupling, and the inner cutters and the outer cutters are installed at intervals in the circumferential direction, so that the axial lines of the inner cutters and the outer cutters do not coincide and the cutter head moves along with the tool carriage while rotating around the axial line; the position of the scale mark of a rack blank corresponds to that of the cutter head, and the speed of the rack blank is equal to that of the tool carriage; relative to the tool carriage, the cutter head perform pure rolling arround a generating circle the radius of which is r, along a base line; and the movement of the point on a cutter head edge, which is relative to the tool carriage, forms the epicycloidal toothed portion of the rack. The rack with the epicycloidal toothed portion has the advantages of high overlap ratio, small engagement impact, stable transmission and high bearing capacity.

Description

technical field [0001] The invention relates to a processing method of a rack, in particular to a processing method of a rack whose tooth line is an epicycloid. Background technique [0002] Rack and pinion transmission is one of the most basic parts for converting linear motion and rotary motion and transmitting power. It has stable transmission, reliable operation, high efficiency, wide range of power and speed, and long life. Therefore, rack and pinion transmission is widely used in various mechanical equipment widely used in. [0003] However, the racks currently used in rack-and-pinion transmissions are divided into two types, straight teeth and helical teeth, according to the shape of the tooth line. When the straight tooth rack and the gear mesh, there is impact and the degree of overlap is small, so it is not suitable for high-speed occasions. When the helical rack and gear mesh, there is an axial force. Contents of the invention [0004] The present invention a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23F5/20
Inventor 邹旻祝海林
Owner CHANGZHOU UNIV