双主轴义齿加工机床结构及空间误差模型构建  

Structural design and volumetric error model construction for two-spindle denture processing machine tool

作　　者：雷小宝[1] 廖文和[1] 张霖[1] 

机构地区：[1]南京航空航天大学机电学院,南京210016

出　　处：《沈阳工业大学学报》2011年第2期177-182,192,共7页Journal of Shenyang University of Technology

基　　金：江苏省"333"第一层次项目支持;江苏省科技攻关资助项目(BE2005014);南京航空航天大学基本科研业务费专项科研资助项目(NS2010143)

摘　　要：为了设计一台满足医学口腔修复领域专用的数控加工机床,运用功能分析方法对义齿加工技术的特点进行研究,明确了义齿加工机床所需具备的功能,构建了加工系统的机械结构并分析给出了一些关键部件的性能参数.基于多体系统基本理论,根据所讨论机床的实际情况推导出双主轴义齿加工机床的空间误差模型.结果证实机床的误差主要来源于各个组件单元间的3个线误差、3个角误差以及轴向间的垂直度误差,为采用适当的误差补偿策略,提高机床的加工精度,使其满足义齿加工的要求提供了理论依据.To design a CNC machine tool dedicated for prosthetic dentistry,the technological characteristics of denture processing were analyzed using the functional analysis approach.The necessary functions possessed by denture processing machine tool were clearly defined.The mechanical structure of the processing system was constructed,and the performance parameters of some key components in the system were given.Based on the basic theory of the multi-body system and according to the actual situation of the investigated machine tool,the volumetric error model for two-spindle denture processing machine tool was developed.It is verified that the error of the machine tool is from three line error and three angular error between structural units as well as the vertical error between axes.The present results provide the theoretical basis for adopting the appropriate error compensation strategy and improving the processing accuracy of machine tool.

关 键 词：义齿加工 口腔修复 牙冠 功能分析 机床结构 多体系统理论 拓扑结构 空间误差模型 

分 类 号：TH122[机械工程—机械设计及理论]