【摘要】 建立了聚晶金刚石复合片硬质合金层磨削过程中的传热学模型,并基于有限元原理,利用工程数值模拟软件ANSYS对硬质合金层磨削时的温度场及应力场分布进行了模拟,分析了不同磨削参数对磨削温度场、应力场及复合片变形量的影响规律。研究表明,磨削深度、砂轮速度等参数对复合片变形量影响较大,磨削深度增大,磨削表面温度升高,残余应力增大,变形加剧。砂轮速度增大,磨削表面温度升高,残余应力增大,变形量也变大。利用有限元方法是研究磨削温度场、应力场及复合片变形规律的一种有效方法。更多还原

【Abstract】 A heat transmission model of polycrystalline diamond (PCD) blanks during surface grinding has been established. Based on the finite element method, the grinding temperature and stress distribution of carbide layer and the PCD’s deformation under different grinding parameter conditions were simulated with the aid of the ANSYS software. The research results show that the grinding parameters such as grinding depth and rotating speed of grinding wheel have great influence on the temperature distribution, stress distribution in the grinding zone and the PCD’s deformation. The temperature, the stress and the PCD’s deformation rise with the increase of grinding depth and rotating speed of grinding wheel. It is concluded that it is an effective method to analyze the temperature and stress distribution of grinding process and the PCD’s deformation by using the finite element method.更多还原