期刊论文

中文

机床与液压

1001-3881

2019

47

19

57-61

10.3969/j.issn.1001-3881.2019.19.012

湖南省科技计划重点研发项目(2016NK2142) 湖南省高校科技创新团队资助(2014207).

本校为第一机构

为了解决直驱式数控转台零件加工时台面固定的问题,提出了一种直驱式转台的双面刹车机构.结合刹车机构的结构,利用微分的方法计算出机构的刹车力矩.为了进一步分析机构中的关键零部件刹车盘,应用有限元分析软件Ansys Workbench对刹车机构进行接触应力分析,以获取关键零件刹车盘的变形量及应力值,其最大等效应力为77.447 MPa,远小于刹车盘材料的许用应力,表明刹车盘的强度满足设计要求.通过模态分析获取其前6阶的固有频率和振型,表明刹车盘在激振频率为689.68、864.65、881.25、893.63 Hz时刹车盘会产生共振,应在零件加工时尽量避免这些频率以保证加工精度.最后实测刹车力矩并与计算值对比,力矩吻...

In order to solve the problem of fixing the surface of the direct-drive Computer Numerical Control(CNC)rotary when parts are progressed on it,a direct-drive CNC rotary table of double-faced brake mechanism is proposed.Combined with the structure of the brake mechanism,the brake torque of the mechanism was calculated by differential method.In order to further analyze the key part brake disk of the mechanism,the contact stress was analyzed by Ansys Workbench to obtain the stress and deformation of the brake disc.The maximum equivalent stress of the brake disc was 77.447 MPa,much smaller than all...