小模数齿轮测量：现状与趋势

小模数齿轮受其几何尺寸与机械性能的影响,其测量难度远大于中模数齿轮.随着科学技术的发展,小模数齿轮的尺寸越来越小,而精度要求却越来越高,特别是微型齿轮的出现,对小模数齿轮的测量提出了新挑战.传统的测量方法中,分析式测量突破不了模数0.2mm,双啮综合测量突破不了模数0.1 mm.而单啮测量对齿轮直径有严格要求,并未得到应有的重视.传统的测量方法已经不能满足小模数齿轮的测量要求.因此,小模数齿轮测量技术已成为近几年的研究热点.小模数齿轮测量技术呈现出新的发展态势,主要表现为:基于视觉测量的齿轮并联测量技术、基于光纤测头的齿轮分析测量技术以及齿轮单面啮合测量技术.

Present Status and Trends of Measurement Technology of Fine-pitch Gears

It is more difficult to measure a fine-pitch gear than a medium pitch gear because of the effect of geometrical dimension and mechanical performance.With technical development,the dimension of a fine- pitch gear is getting smaller and smaller but the precision is becoming higher and higher,especially due to Mi- cro-gear's appearance.It leads to a new challenge to measure a fine-pitch gear.Adopting traditional measure- ment methods,the analytic measurement for gears can not reach 0.2 mm and the functional measurement for gears can not reach 0.1 mm.Owing to the strict limitations of gear diameter,gear single-flank rolling test can not attract the attention which they should be deserved.It can be said that the traditional measurement meth- ods have been unable to meet small modulus gear measurement requirements.So the technology of fine pitch gear measurement has become a hot research in recent years.Currently,the technology of fine-pitch gear measurement shows new development trends,such as the gear parallel measuring technology based on the op- tics;the gear analytic measuring technology based on the optical fiber probe and gear single flank roiling test.