KENNAMETAL快换工具系统之一采用锥形碟形弹簧锁紧机构。应确定碟形弹簧的精确力，以设计具有足够性能和所需循环寿命的夹紧装置。本文给出了用改进公式计算盘形弹簧力的方法，以及估算车床和加工中心夹紧装置用锥形盘形弹簧疲劳寿命的方法。

A CONED DISC-SPRING LOCKING MECHANISM IS UTILIZED IN ONE OF THE KENNAMETAL QUICK-CHANGE TOOLING SYSTEMS. PRECISE FORCES OF DISC SPRINGS SHOULD BE DETERMINED TO DESIGN CLAMPING UNITS WITH ADEQUATE PERFORMANCE AND REQUIRED CYCLE LIFE. THIS PAPER PROVIDES CALCULATIONS OF DISC SPRING FORCES BY THE IMPROVED FORMULA, AND THE METHODOLOGY TO ESTIMATE FATIGUE LIFE OF CONED DISC SPRINGS USED IN THE CLAMPING UNITS FOR LATHES AND MACHINING CENTERS.