新型研球机固定板压盘的结构设计与优化

Structural Design and Optimization of Fixed Plate Pressure Plate of New Ball Lapping Machine

为了满足新型研球机变径沟槽研球板均匀加压的需要,设计一种偏心加压固定板压盘。通过分析固定板压盘的功能需求,采用联想类比法,提出固定板压盘的结构设计方案;运用数值仿真技术,建立固定板压盘的有限元模型,分析压盘的静态与模态特性,获得压盘的变形图、应力云图和固有频率与振型,验证了压盘结构设计的可行性。针对固定板压盘的偏心距大小和进球缺口到压盘中心的距离大小,以结构变形和应力最小为优化目标,通过参数化建模,基于响应面法对压盘进行了参数优化,获得压盘的最优结构参数。分析结果显示:优化后的固定板压盘,加载后最大变形减小,压力分布更加均匀。通过结构方案的创新和采用现代设计方法,实现了新型结构件的设计要求。

In order to meet the need of uniform pressure on the ball lapping plate of the new ball lapping machine with variable diameter groove,a kind of eccentric pressure fixed plate press plate was designed.By analyzing the functional requirements of the fixed plate pressure plate,the structural design scheme of the fixed plate pressure plate was proposed by using the method of associa⁃tion analogy.By using numerical simulation technology,the static and modal characteristics of the platen were analyzed by establishing the finite element model of the platen,and the deformation diagram,stress cloud diagram,natural frequency and vibration mode of the platen were obtained,which verified the feasibility of the design of the platen structure.According to the eccentricity of the fixed plate and the distance between the goal notch and the center of the plate,the optimization objective was to minimize the structural de⁃formation and stress.Through parametric modeling and response surface method,the parameters of the platen were optimized,and the optimal structural parameters were obtained.The analysis results show that the maximum deformation of the optimized fixed plate pres⁃sure plate decreases and the pressure distribution is more uniform.Through the structural scheme innovation and the adoption of mod⁃ern design method,the design requirements of new structural parts are realized.