考虑涂层厚度的齿轮齿厚偏差设计

Deviation Design of Teeth Width in Consideration of Coating

耐磨涂层对于齿面强化,延长齿轮的使用寿命和发展新型齿轮加工技术具有重要的意义,涂层技术已成为国内外研究高性能齿轮的热点。但耐磨涂层的应用增加了轮齿齿厚,减小了齿轮副的传动侧隙,如果涂层齿轮未作预先修形处理,啮合时会产生干涉现象。为降低涂层对齿轮啮合性能的不利影响,在考虑齿轮涂层厚度的前提下对齿厚偏差的选择进行了分析计算,通过齿厚偏差来补偿涂层厚度引起的齿轮副传动侧隙的变化,这对保证涂层齿轮传动的平稳性,完善涂层技术在齿轮上的应用具有指导意义。

Coating can intensify the surface of gears,prolong its life,and develop new machining techniques.Coating technology has been the focus of research on high performance gears at home and abroad.However,the coating adds the tooth thickness,reduces the backlash of gear.There will be interference problem if the coated gears are not modificated in advance.To reduce the adverse effects of coating on gear meshing,the influence of coating on the backlash was analyzed,and the deviation of teeth width was calculated.The results showed that the change of backlash by coating can be compensated by deviation of teeth width.The research has improved guidance to ensure the steady transmission of coated gear and develop coating technologies on gears.