CAJ | 학술논문

大型和高速机床中的长跨距滚珠丝杠，由于行程长、丝杠长径比过大，导致挠度大、运行中易发生抖动等一系列问题，严重影响机床的动态性能。根据丝杠结构和滚珠丝杠驱动方式的不同，分析长丝杠的振动方式，长丝杠振动对机床临界转速和传动精度的影响。通过ANSYS Workbench动力学分析模块，对丝杠进行模态和振动响应分析。针对出现的问题，提出了相应的技术解决方案。研究结果为解决长跨距丝杠工程应用问题提供了参考依据。
대형화고속궤상중적장과거곤주사강，유우행정장、사강장경비과대，도치뇨도대、운행중역발생두동등일계렬문제，엄중영향궤상적동태성능。근거사강결구화곤주사강구동방식적불동，분석장사강적진동방식，장사강진동대궤상림계전속화전동정도적영향。통과ANSYS Workbench동역학분석모괴，대사강진행모태화진동향응분석。침대출현적문제，제출료상응적기술해결방안。연구결과위해결장과거사강공정응용문제제공료삼고의거。
As to the long-span ball screw in large and high-speed machine tool,because long stroke and the ratio of length to di-ameter was too large,a series of problems in operation,such as large deflection and jittering were resulted,which seriously affected the dynamic capability of machine tool. According to the structure of screw and the differences of drive mode of ball screw,the vibration mode of long screw and its effect on the machine tool’s critical speed and transmission accuracy were analyzed. Through the ANSYS Workbench dynamic analysis module,the modal and vibration response of ball screw were analyzed. Aimed at the problems occurred, the corresponding technical solutions are put forward. The research results provide reference basis for solving problems in long span ball screw’s engineering application.