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近来,机床和长度测量仪等设备上淬硬和磨削丝杠的使用与日俱增,而且对这些磨削丝杠要求有极高的螺距精度,如已普遍使用在数控机床上的那些丝杠。然而,目前的螺纹磨削技术还不能满足这种要求。基于在螺纹磨削中热变形是螺距误差的主要起因这一设想,本文将讨论工件螺纹和磨床热变形的试验和理论分析。为了达到最小的螺距误差,可按照磨削情况加以补偿。为此,根据作者们的试验,使用了一个数字控制系统的补偿装置。试验结果证明,磨削一米丝杠的全长螺距累积误差降到5微米左右;另外,对设计一台磨削高精度丝杠的螺纹磨床提出了一
Recently, the use of hardened and ground lead screws on equipment such as machine tools and length gauges has been increasing, and these lead screws have been required to have extremely high pitch accuracy, such as those commonly used on CNC machines. However, the current thread grinding technology can not meet this requirement. Based on the assumption that thermal deformation is the main cause of pitch error in thread grinding, this paper will discuss the experimental and theoretical analysis of workpiece thread and thermal deformation of grinding machine. In order to achieve the smallest pitch error, according to grinding conditions to be compensated. For this reason, according to the authors’ experiments, a digital control system compensation device was used. The test results show that the cumulative pitch error of grinding a meter screw down to about 5 microns; In addition, the design of a grinding high precision screw grinder proposed a