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圆柱齿轮的精挤齿技术近年来又取得了好些突破性进展,又引起了国内外齿轮制造业的注意。挤齿是一个高效而经济的工艺,工艺稳定性好,设备简单,调试操作方便,挤轮寿命长,而且经过挤压加工的齿轮齿面粗糙度低,有冷作硬化层,呈残余压应力,这对提高齿轮的接触刚度和使用寿命也极其有利。但是,挤齿时挤轧压力偏高,所以必须配置相应数量的挤轮来支承,承受挤压力。一般挤齿至少采用两个挤压轮。其尤为严重的是挤压力过高,使得齿轮齿廓产生歪斜、中凹,致使齿轮齿形精度大幅度地下降,以致阻碍了这项技术的推广使用。
In recent years, the spur gear technology of the spur gear has achieved a number of breakthroughs and attracted the attention of the gear manufacturing industry at home and abroad. Teeth squeezing is an efficient and economical process with good process stability, simple equipment, convenient operation and debugging, long service life of the squeeze wheel, low gear tooth surface roughness after extrusion, cold working hardening layer, residual compressive stress , Which is extremely beneficial to improve the contact stiffness and service life of gears. However, when squeezing squeeze squeeze high pressure, it must configure the appropriate number of squeeze wheel to support, to withstand squeezing pressure. General squeezing at least two squeeze wheel. It is particularly serious is the extrusion pressure is too high, making the gear tooth profile skew, concave, resulting in a substantial decline in gear tooth accuracy, which hindered the promotion of the use of this technology.