Dynamics analysis and design of leather cutting mechanism

GE Hong-wei1， WAN Zhong-kui1， ZHOU Tian-hang1， SHOU Kai-rong1， YANG Liang-liang2
（1. Qixin College， Zhejiang Sci-Tech University， Hangzhou 310018， China； 2. Research Institute of Mechanical Electronic Engineering， Zhejiang Sci-Tech University， Hangzhou 310018， China）

Abstract： Leather cutting is a key process in leather processing. Electrodynamic leather cutting mechanism improves the efficiency of the leather cutting with its characteristics of convenient and efficient，but electrodynamic leather cutting mechanism is shortcomings of large noise and low accuracy of cutting. In order to analyze the factors of affecting vibration noise，cutting speed and cutting precision，one kind of design of leather cutting mechanism was offered. Through the kinematics simulation，the movement of cutting head，the reasons for  dynamic unbalance and the improvement methods have been obtained. With the ANSYS，the stress distribution of the telescopic rod has been received. The results indicate that the vibration noise is related to the inertial force，and the inertial force produced is the result of dynamic unbalance. In addition，the mechanical deformation of the telescopic rod will affect the cutting precision.
Key words： leather-cutting； design scheme； kinematics simulation； stress analysis