涡旋压缩机涡旋体加工位置和转角误差的快速测量.pdf

现代制造工程2010年第5期
仪器仪表/检测/监控
涡旋压缩机涡旋体加工位置和
转角误差的怏速测量
房怀英,杨建红
(华侨大学机电及自动化学院,泉州362021)
摘要:由于对刀误差和机床的零点漂移,涡旋压缩机转动涡旋体加工过程中存在位置和转角偏差。首先基于圆柱坐标系
开发了转动涡旋体型线误差快速测量系统;然后通过测量标准圆柱体和量块得到测量系统的位置和转角偏差;最后采
用遗传算法计算岀转动涡旋体加工位置和转角偏差。同三坐标测量机(CMMs)测量结果对比表明,在满足测量精度的
前提下,快速测量系统的测量时间为230s,且能满足加工现场的测量环境要求。加工偏差的快速测量能提高涡旋体的
加工精度和加τ效率。
关键词:涡旋体;快速测量;测量偏差;加.偏差;测量时间
中图分类号:TH45506文献标识码:A文章编号:1671-3133(2010)05-0102-05
Rapid measurement of machining position and rotation angle
error for the orbit scroll profiles
FANG Huai-ying, YANG Jian-hong
College of Mechanical and Electrical Engineering, Huaqiao University, Quanzhou 362021, Fujian, China
Abstact: Aco ng o he main ng r f l oies, e lies position and rota on angle er because of ool-selin
error and zero drift for machine. Fist, a rapid measuring s stem of the orbiting scro profile is developed based on cylindrical co
ordinate system. The position and rotation angle error of the rapid measuring system is got by measuring a standard cylinder and
gauge blocks. Finally, the machining osition and rotation ane s of the ri ing scroll profile a got based on genetic
rithm. Some test results are found comparing with MMS(orinate Measuring Machines ) On condition that meeting re
ment of the measurement accuracy, the total measuring time of the rapid measurement system is about 230 seconds,. The rapi
measur ng system can meet e conition of e pessing workshop. The rapid measurement of machining position and rotation
angle error can improved the machining accuracy and machining efficiency of scroll profiles
Key words: scroll profiles; rapid measurement; measuring error; machining error; measuring time
引言
精度引起,提高型线加丁精度能减小轴向泄漏间
隙?。但是在涡旋体加工过程中,因为对刀误差和加
涡旋压绵机具有噪声低、效率髙等优点,因此涡工机床的零点漂移等影响,很难保证涡旋体型线加工
旋压缩机的研究受到国内外越来越多的学者重精度。目前提高型线加工精度的主要方法为:在涡
视2。涡旋压缩机的关键技术之一为涡旋体的加工旋体型线加工完成后,通过三坐标测量机(CMMs)测
制造,涡旋体的加工精度直接影响泄漏间隙和压缩效量涡旋体型线轮廓精度,然后通过三维空间迭代寻优
率。动、静涡旋体之间的泄漏间隙主要包括径向泄漏计算得到涡旋中心位置和转角偏差,重新设置加工机
间隙和轴向泄漏间隙。径向泄漏间隙主要为涡旋体床的零点和旋转平台的起始角,最后对涡旋体型线进
齿顶面和齿底面加丁精度所致,可以通过在动、静涡行修正精密加工。涡旋压缩机加工单件涡旋体型线
旋体齿顶面开密封槽和加密封圈来减少径向泄漏间的时间为5min左右,CMMs的测量时间为20min,且
隙;轴向泄漏间隙主要由动、静涡旋体型线轮廓加工CMMs不能直接在加工现场环境下进行测量,这将严
福建省自然科学基金资助项目(D810019
万方数据