ZN蜗杆数磨削工艺研究.doc

ZN蜗杆数控磨削工艺的研究 ee （ee） 指导教师：ee [摘要]ZN 蜗杆又称法向直廓蜗杆。现代工业产品对蜗杆蜗轮副在承载能力，传动效率和传动精度等方面提出了更高的要求，为满足这些要求，一方面是采用机械性能更好的材料和必要的热处理，另一方面是提高加工精度,如采用磨削加工来提高蜗杆螺旋面的形状精度和降低表面粗糙度值，因此蜗杆磨削的设计和研究有着重要的实际意义。 论文首先在深入研究微分几何和空间啮合原理的基础上，建立了法向直廓蜗杆的曲面方程，按照螺旋面的产生原理建立蜗杆的齿面方程，，然后根据齿面空间啮合原理计算成形磨削所需的砂轮截并应用建立的曲面方程和选定的一组符合国家标准的蜗杆参数在MATLAB编程，得出砂轮截型曲线，与理论轮廓作比较。因此对其砂轮进行修整，从而提高蜗杆的加工精度，操作方便，简单。 [关键词]：ZN 蜗杆，成形磨削，砂轮截型，砂轮修整 ZN worm grinding process Research ee (ee) Tutor: ee Abstract: ZN worm is also called straight sided normal worm.Now days,worm gearing which has higher performance in bearing capacity,transmission efficiency and transmission precision is needed in moder industry products.In order to meet this demand,two measures can be taken to deal with it;one is to adopt new material with higher strength and to take heat treatment such as to improve worm shape precision or to deduce its surface roughness.So,worm grinding technology research and development has important and real meaning. Fistly,surface equation of straight sided normal worm is built on the basis of differential meshing theory.The shape section contour of grinding wheel was calculated by space meshing theory.The obtained section contour of grinding wheel was a series of discrete dots .Then this equation is used to set up solid model of the straight sided normal worm with a set of worm parameters which are derived from national standard.The modeling tools are used here is MATLAM,Wheel cut-type curves derived.Compared with the theoretical outline.So its wheel trimmed,thereby improving processing accuracy of the worm,operating side, they simply. Key Words:ZN worm,Form Grinding,Wheel cut type,Grinding Wheel 目 录 1 绪论 1 1.1引言 1 1.1.1课题研究的目的 1 1.1.2课题研究的意义 1 1.2与本课题相关的国内外研究情况 1 1.2.1典型蜗杆的发展 1 1.2.2蜗杆传动的发展趋势 2 1.2.3蜗杆成型磨削的研究状况 2 1.3本课题主要研究内容 3 2 法向直廊蜗杆的啮合理论 4 2.1建立坐标系和坐标转换 4 2.1.1建立坐标系 4 2.1.2各坐标系间的坐标变换 4 2.2 Z