Point Vector Enveloping Method for Determining Tool Profile in Helical Surface Forming

A technology for helical surface and forming processing, applied in the design and manufacture of helical surface forming and machining tools, and the field of helical surface manufacturing, can solve problems such as difficult to establish a general computer method, tedious formula derivation mathematical calculation, etc., which is conducive to the realization of programming , high robustness, good effect of optimization of motion trajectory
CN104898557BActive Publication Date: 2017-08-25CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2017-08-25

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Abstract

The present invention discloses a point vector envelope method for determining tool profile in spiral curved surface forming processing, belonging to the manufacturing field of a spiral curved surface. Firstly, the mold line of a spiral curved surface is subjected to point discrete according to an average rule, a point vector formed by a discrete point and the normal vector of the discrete point is used completely describe a spiral discrete point, the spiral movement track of the mold line point vector is subjected to discrete, and the process of spiral curved surface envelope forming wheel is completely simulated with the envelope movement of the point vector. By using the method point vector approximation forming tool, a plane point vector envelope principle and an envelope approximation method are established, a point in a point vector family with a shortest distance to a forming tool is determined as the envelope point, and finally all envelope points are used to form a tool profile through the mode of fitting.
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Description

technical field

[0001] The invention belongs to the field of manufacturing spiral curved surfaces, in particular to the field of designing and manufacturing tools for forming and processing spiral curved surfaces, and relates to a point-vector envelope method for determining the profile of a tool in forming and processing spiral curved surfaces. Background technique

[0002] Spiral curved surface is a kind of curved surface widely used in engineering. It is mainly used in gears, worms, spiral blades and machining tools. Forming method is a main processing method of spiral curved surface. Most of the forming tools use a revolving surface, and there is a spatial mapping relationship between the generatrix of the revolving surface and the profile line of the processed helical surface. Therefore, the calculated contour accuracy of the forming tool has a great influence on the accuracy of the final enveloped helical surface.

[0003] At present, the design of rotary forming tools...

Claims

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