加工和安装误差对无侧隙蜗杆传动接触线及齿廓的影响  

Effects of Errors on Tooth Profile and Contact Curve of Non-Backlash Double-Roller Enveloping Hourglass Worm

作　　者：邓星桥[1] 向中凡[1] 王进戈[1] 

机构地区：[1]西华大学机械工程与自动化学院,成都610039

出　　处：《西安交通大学学报》2011年第2期111-116,124,共7页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(50775190);四川省重点学科建设资助项目(SZD0409-08-0)

摘　　要：在具有加工和安装误差的情况下,为了研究各蜗杆参数对无侧隙双滚子包络环面蜗杆的齿廓及蜗杆齿面接触线的影响规律,建立了包含加工误差和安装误差的蜗杆传动啮合函数,建立了蜗杆齿面接触线及蜗杆齿廓方程,利用三维建模技术分析了蜗杆、蜗轮轴交角误差,中心距误差,蜗杆轴向窜动误差,蜗轮滚子齿距角误差,砂轮滚子偏距误差,转角误差等对蜗杆齿廓的影响,同时分析了在误差作用下蜗杆齿面接触线发生的变化,并进行了运动学仿真.研究结果表明:转角误差、砂轮滚子齿距角误差达0.5°时对蜗杆齿廓影响较为明显,即容易产生卡死现象;当蜗杆轴交角误差达0.5°时,整个蜗杆齿廓产生了严重变形,且蜗杆轴断面变为椭圆形,极易发生蜗轮轮齿折断现象;其他误差在1 mm以内时对齿廓及齿接触线的影响较小.For a new non-backlash double-roller enveloping hourglass worm, the tooth profile and contact curve equation, which involves several errors of worm parameters, was established to investigate the effects of the errors on the worm tooth profile. Technology of three-dimensional modeling was chosen to analyze the influence law of the errors. The influences of the setover error of roller, the error of axial float of worm, the centre distance error, the error of axial movement, the angular pitch error and the error of shaft angle on the tooth profile were discussed, the contact curve was analyzed, and the kinematic simulation was carried out. The results show that the axial movement error, the angular pitch error and the error of shaft angle reaching 0.5° exert clear influence on the tooth profile of worm; especially, when the error of shaft angle gets 0. 5° the tooth profile of worm is heavily deformed and the axis cross-section becomes ellipse; however, the other errors have lighter influence on the tooth profile of worm as the values are limited within 1.0 mm.

关 键 词：无侧隙 双滚子包络环面蜗杆 接触线分析 齿廓 三维建模 

分 类 号：TH132.41[机械工程—机械制造及自动化]