Arc surface calibratkon cam mechanism and its processing method

A technology of indexing cams and arc surfaces, which is applied in the direction of mechanical equipment, belts/chains/gears, transmission parts, etc., to achieve the effects of reduced wear, small wear, and improved lubrication and stress state

Inactive Publication Date: 2004-12-22
TIANJIN POLYTECHNIC UNIV
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  • Abstract
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Problems solved by technology

[0024] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to design a new type of arc surface indexing cam mechanism, which has many advantages such as simple structure, convenient processing, small wear, low noise, long life, etc., especially for The processing error tolerance is strong, which is beneficial to ensure the indexing and positioning accuracy of the cam mechanism, and improves the motion and dynamic performance of the cam mechanism

Method used

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  • Arc surface calibratkon cam mechanism and its processing method
  • Arc surface calibratkon cam mechanism and its processing method
  • Arc surface calibratkon cam mechanism and its processing method

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Embodiment Construction

[0046] Further describe the present invention below in conjunction with embodiment and accompanying drawing thereof:

[0047] An arc indexing cam mechanism designed by the present invention includes a cam and a roller 2 engaged with it, and the cam profile 4 includes a positioning section, a transition section and an indexing section, and is characterized in that the cam profile 4 The transition section and the indexing section are concave surfaces, and the matching roller 2 is a drum-shaped roller 3 whose curvature radius is smaller than that of the concave surface of the convex profile surface 4 (see figure 1 , 2 , 3 and 4).

[0048] This design of the present invention is based on the result of in-depth research on the theoretical engagement contact line of traditional or conventional arcuate indexing cam mechanisms: the cam 1 and roller 2 theoretical engagement contact lines of traditional or conventional arcuate indexing cam mechanisms are a space curve (see e.g. ima...

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Abstract

Convex profile surface includes position section, transition section and division section. Characters are that the transition section and division section are concave surface, and radius of curvature of drum type roller is less than radius of curvature of the concave surface to be matched. The manufacturing method is method of four coordinates interlock of processing in single side face including interlock between z1 rotation axis of cam and z2 rotation axis of cutting tool as well as straight-ahead travel of cutting tool along y2 and z2 coordinates. Features are: small abrasion, low noise, long service life and raised manufacturing accuracy and efficiency.

Description

technical field [0001] The invention relates to a mechanical cam mechanism, specifically an arc-surface indexing cam mechanism and a processing method thereof, and the international patent classification number is intended to be Int.Cl 7 .F16H 37 / 00. Background technique [0002] The arc indexing cam mechanism is an ideal indexing mechanism suitable for high-speed and high-precision work occasions. The arc surface indexing cam mechanism currently produced and used is basically a cylindrical roller follower. Through the analysis of its mechanical structure and meshing characteristics, it can be seen that even in the theoretical meshing state, the contact between the cylindrical roller and the cam surface cannot achieve pure rolling. The reason is that when the cam rotates at a constant angular velocity, the farther it is from the cam axis, the greater its movement speed, so the two sides at a certain point on the contact line between the meshing roller and the cam will slip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00F16H37/12
Inventor 尹明富赵镇宏张一同
Owner TIANJIN POLYTECHNIC UNIV
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