机构地区: 内蒙古科技大学机械工程学院
出 处: 《制造技术与机床》 2008年第6期155-157,共3页
摘 要: 机电综合传动刚度影响数控机床的定位精度,正确计算此传动刚度是机床设计的前题,传统设计方法中忽略了扭转刚度的作用,应用力学方法对比分析了丝杠扭转变形与拉压变形的关系,用图表的形式展示了二者随丝杠尺寸变化的趋势,并用实验进行了验证。最后得出结论,当丝杠的导程与直径的比值足够大时,扭转变形对传动刚度会有显著的影响。 Electromechanical rigidity of feed system with ball screw in NC machine has a major influence on positioning accuracy, torsion deformation is the important part of electromechanical rigidity, calculation of the axial deformation and torsion deformation for screw was discussed, the contrast between the axial deformation and torsion deformation showed that the torsion deformation affects electromechanical rigidity obviously.