文档介绍：南京航空航天大学
硕士学位论文
高精度单针接触式螺纹测量仪的设计与研究
姓名:丁亮亮
申请学位级别:硕士
专业:机械电子工程
指导教师:赵东标
2011-03
南京航空航天大学硕士学位论文
摘要
现代机械生产领域对螺纹测量精度的要求越来越高,而传统的螺纹检测仪器测量精度不理
想,效率不高,对螺纹参数测量不全面。本文研制了一种新型的接触式螺纹多参数测量仪,基
于螺纹轮廓扫描的测量方案,通过采集、处理螺纹轮廓面的坐标数据得到螺纹各项参数,实现
螺纹的高精度、全自动测量。论文的主要研究内容如下:
首先根据轮廓扫描测量原理确定了螺纹测量仪的工作原理,提出了测量仪的设计技术指标,
完成测量仪的机械总体结构与测控系统的方案设计,并对一些关键部件进行了选型、结构设计
以及结构优化。
鉴于气浮导轨摩擦小、运动平稳及导向精度高等良好的运动性能,选用其作为螺纹测量仪
的运动导轨,完成了气浮导轨结构设计与参数设计,并通过有限元方法分析气浮导轨相关参数
对其承载能力和刚度的影响,以达到优化设计参数的目的。
借鉴杠杆测量原理完成了螺纹测量仪中微位移测量装置的结构设计,分析了微位移测量机
构的非线性测量误差,讨论了误差的补偿方法与可行性,并通过迭代标定的方法对微位移测量
装置的测量精度进行标定补偿,使其满足本课题所需的测量精度要求。
最后分析了引起螺纹测量仪运行误差的误差源,并通过改善气浮导轨运动性能,提高直线
电机平台定位精度和采取隔振等措施来保证螺纹测量仪的高精度运行。

关键词:螺纹参数测量,结构设计,直线电机,气浮导轨,有限元,误差分析
I
高精度单针接触式螺纹测量仪的设计与研究
ABSTRACT
The requirement of screw thread measuring precision is increasing in the fields of modern
mechanical and industrial the error of traditional screw thread measuring instrument is
large, the efficiency is low, and the screw thread parameters measurement is
paper developed a new kind of stylus contact thread measuring instrument based on the optical
scanning method,which obtained the parameters directly through measuring the screw thread
screw thread measuring instrument can realize automatic and high precision
measurement of thread main study work of the paper is as following:
The working principle of the screw thread measuring instrument was determined according to
the contour scanning measuring the design technical specifications and scheme were
proposed, According to that, the design of measuring instrument's mechanical overall structure and
measuring control system pleted and some ponents selection, structure design and
structure optimization were studied.
In view of air-bearing guide’s good athletic performance, such as smaller friction, smooth
movement and higher precision direction, it was choosed as thread measuring instrumen