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成形磨削是未来精密蜗杆加工的发展趋势,其中砂轮截形的精确计算是保证蜗杆加工精度的前提,首先制定了ZN蜗杆和砂轮的坐标系,并依据空间齿面啮合原理建立了磨削模型,推导了ZN蜗杆加工时的砂轮的理论廓形,即金刚盘的运动轨迹。其次,基于VB+Access平台,设计了完整的砂轮修整器控制系统,用户只需输入要加工蜗杆的基本参数,即可得到修整砂轮时所用的数控加工G代码。软件采用模块化设计。最后经实验验证,精度达到要求。为后续数控蜗杆磨床的设计提供一定的理论依据。
Shaping grinding is the trend of the future precision worm processing. Accurate calculation of the grinding wheel truncation is the prerequisite to ensure the machining precision of the worm. Firstly, the coordinate system of the worm and the grinding wheel is developed. The grinding model is established according to the meshing principle , The theoretical profile of the grinding wheel when the ZN worm is machined is deduced, that is, the motion trajectory of the diamond plate. Secondly, based on the VB + Access platform, a complete grinding wheel dresser control system is designed. Users only need to input the basic parameters of the worm to be machined to get the G code of the CNC machining. Software modular design. Finally, experimental verification, accuracy requirements. It provides a theoretical basis for the design of NC worm grinder.