无油涡旋空压机涡旋型线精度测试工艺研究  

Accuracy testing technique on scroll profile of oil-free air scroll compressor

作　　者：邵中魁 沈小丽 黄建军 陶仁和 朱征东 SHAO Zhong-kui;SHEN Xiao-li;HUANG Jian-jun;TAO Ren-he;ZHU Zheng-dong(Zhejiang Institute of Mechanical&Electrical Engineering Co.Ltd.,Hangzhou 310051,China;Zhejiang Huachang Hydraulic Machinery Co.,Ltd.,Hangzhou 311300,China)

机构地区：[1]浙江省机电设计研究院有限公司,浙江杭州310051 [2]浙江华昌液压机械有限公司,浙江杭州311300

出　　处：《机电工程》2022年第3期388-393,共6页Journal of Mechanical & Electrical Engineering

基　　金：浙江省自然科学基金资助项目(LGG19E060004,LGG19E050016,2021C01134)。

摘　　要：针对无油涡旋空压机型线精度要求高和型线质量检测难度大的问题,开展了圆渐开线涡旋盘加工工艺及测试技术研究。首先,采用高精度三坐标仪在涡旋盘同一高度层上采集了若干样点坐标;然后,对涡旋型线方程参数进行了初步估值,选择4个典型样点,并估算了其对应的展开角;接着,采用牛顿迭代法进行了迭代计算,得到了方程精确的待定参数,并计算了三坐标所测样点与所求涡旋型线之间的误差;最后,测试分析了经硬质氧化后的涡旋盘氧化层质量。研究结果表明:所提出的这种针对未知方程参数的圆渐开线型线求解及质量检测的方法,可用于高效求解涡旋盘型线方程,并有效评估涡旋型线的精度,所测样点平均误差约5μm,平均绝对误差约20μm,且硬质氧化层的硬度和均匀性可满足实际使用需求;该结果对提高涡旋空压机的测试工艺和质量控制具有一定的意义。Aiming at the high precision requirement and the difficulty of testing the scroll profile of oil-free scroll air compressor,a study to analyze processing technic and testing technic of the circle involute of the scroll plate was proposed.Firstly,several samples on the scroll plate were collected at the same height on the vortex teeth using a high-accuracy trilinear coordinates measuring instrument.Then the equation parameters were estimated by geometric method and involute expansion angle was estimated of four selected typical samples.Then the accurate pending parameters of the profile equation were solved by the Newton iteration method and the error between the samples measured by the trilinear coordinates measuring instrument and the scroll profile was calculated.At last,the quality of the oxide layer by the hard anodizing was analyzed.The results show that the calculation method proposed in the study can solve profile curve with unknown parameters and assess the profile accuracy efficiently.The mean error and the mean absolute error of the measured samples are about 5μm and 20μm respectively,and the uniformity and the hardness of the oxide layer can meet the requirement.The study is significant to improve the testing process and quality control of the oil-free air scroll compressor.

关 键 词：无油涡旋空压机 涡旋型线精度 测试工艺 涡旋盘加工工艺 

分 类 号：TH45[机械工程—机械制造及自动化]