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Numerical control grinding and machining method of stepwise variable pressure angle involute gear

A technology of involute gears and variable pressure angles, which is applied to elements with teeth, belts/chains/gears, gear teeth, etc., which can solve problems such as low production efficiency, limited use range, and unguaranteed gear machining accuracy.

Inactive Publication Date: 2010-11-03
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low flexibility of ordinary non-NC gear grinding machine tools, the production efficiency is low, the processing cost is high, and the scope of use is greatly limited; currently, the CNC gear grinding process of step-by-step variable pressure angle involute gears is generally used in production. Single ring gear profiling grinding wheel processing, that is, first process the grinding wheel tool with the same tooth shape as required, and then profiling
However, because the ordinary grinding wheel is easy to wear and needs to be frequently trimmed to maintain the original tooth shape, when using this method, it will lead to poor processing continuity and low processing efficiency. Machining accuracy cannot be guaranteed

Method used

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  • Numerical control grinding and machining method of stepwise variable pressure angle involute gear
  • Numerical control grinding and machining method of stepwise variable pressure angle involute gear
  • Numerical control grinding and machining method of stepwise variable pressure angle involute gear

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Embodiment Construction

[0077] This embodiment is aimed at stepwise variable pressure angle involute gears, the tooth shape of which has a stepwise double involute structure, the entire tooth profile is divided by the index circle, and the part below the index circle is the index circle pressure angle is α 1 The standard involute I 1 , the part above the graduation circle is the graduation circle pressure angle is α 2 The stepped involute I 2 , α 1 = 20°, α 2 >20°, r is the radius of the indexing circle, the tooth shape of the involute gear with stepwise variable pressure angle is as follows figure 1 shown;

[0078] Standard Involute I 1 The parametric equation for :

[0079]

[0080] Stepped Involute I 2 The parametric equation for is:

[0081] x ( 2 ) y ...

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Abstract

The invention discloses a numerical control grinding and machining method of a stepwise variable pressure angle involute gear. The numerical control grinding and machining method is characterized in that: by utilizing a radial and tangential linkage displacement principle of a grinding wheel, a linkage control model for grinding the stepwise variable pressure angle involute gear by adopting an Archimedes worm wheel on the basis of a six-axis five-linkage numerical control system and a real-time interpolation pulse value calculation method directly used for actual design machining of a machine tool are provided. The invention fills a blank of the technology for grinding and machining the stepwise variable pressure angle involute gear by adopting a fix-axis five-linkage numerical control method and can provide the technical basis for high-precision machining of the stepwise variable pressure angle involute gear.

Description

technical field [0001] The invention relates to a numerically controlled grinding method of an involute gear with a stepwise variable pressure angle. Background technique [0002] The stepped variable pressure angle involute gear has the advantages of low transmission noise, high transmission efficiency and long service life, and is especially suitable for high-speed, heavy-load, high-precision, high-rigidity occasions, such as the manufacture of gears for automobiles and aircraft. . The existing step-by-step variable pressure angle involute gear processing methods generally include ordinary gear grinding machine profiling grinding and CNC gear grinding machine single ring profiling grinding wheel processing. Due to the low flexibility of ordinary non-NC gear grinding machine tools, the production efficiency is low, the processing cost is high, and the scope of use is greatly limited; currently, the CNC gear grinding process of step-by-step variable pressure angle involute ...

Claims

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Application Information

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IPC IPC(8): B23F5/04
Inventor 吴焱明凌飞黄康陈奇赵韩
Owner HEFEI UNIV OF TECH
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