高弹性锥体高速刀柄的设计  

Design of high speed toolholder with high elastic taper

作　　者：王军[1] 高延婷[2] 任权国[1] 吴凤和[1] 

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]长城汽车股份有限公司,河北保定071000

出　　处：《机械设计》2016年第3期7-11,共5页Journal of Machine Design

基　　金：国家科技重大专项基金资助项目(2013ZX04001041)

摘　　要：设计一种具有高弹性锥体的新型高速刀柄,即在双面定位实心短锥高速刀柄的锥体上开有直、环交错槽,形成多个独立小锥面,增加了刀柄锥体的弹性。刀柄锥体的高弹性使得刀柄与主轴能够采用更大的配合过盈量,补偿主轴的高速离心膨胀,提高刀柄的极限转速。借助ANSYS Workbench有限元软件对刀柄与主轴的配合压力与变形进行模拟分析,并参照HSK刀柄的性能参数,确定所设计刀柄的结构尺寸、配合过盈量和极限转速。结果表明,与HSK刀柄相比,在相同连接刚度条件下所设计刀柄具有更高的极限转速,适合高速加工。A new type of high speed toolholder with high elastic taper was designed, which was cut with straight and circular grooves on the double-sided positioning high-speed toolholder with short taper and solid shank. This formed a plurality of independent small cones, so the elasticity of taper-shank was increased. A bigger magnitude of interference can be used between toolholder and spindle to compensate centrifugal expansion of spindle, and then the limit speed of toolholder is raised. The ANSYS Workbench FEM software was used to simulate the interference fit pressure and deformation. The tool holder structure size, magnitude of interference and limiting speed were determined by reference to the HSK performance parameters. The results showed that the designed toolholder was suitable for higher speed machining because of the higher limit speed under the same coupling stiffness compared with HSK.

关 键 词：高速刀柄 弹性 结构设计 极限转速 有限元 

分 类 号：TG710.3[金属学及工艺—刀具与模具]