Simulation and Analysis of the Shape Effect on the Inverted Tooth Chain Transmission System

• Main Authors: Wen-Chun Hung, 洪文駿
• Other Authors: Shean-juinn Chiou
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/59543973655431820862

碩士 === 國立中興大學 === 機械工程學系 === 92 === Inverted tooth chain, also called silent chain, efficiently, smoothly and quietly transmits power through the positive engagement of chain teeth with sprocket teeth. Its speed and load ability is superior to those of many other kinds of transmission mechanism. Its transmitting power can reach 2000 HP, the speed can be up to 7000 FPM, and the average efficiency is up to 97~99 %. There will be neither slipping during the transmission nor friction in bearings which can result power losing. Moreover, inverted tooth chain also gets credit for its compact size, huge tensile strength, and long performance life. More importantly, it can be automatically compensated when the chain links are broken. So, inverted tooth chain has become the best choice in the transmission mechanism of many kinds of chains. The CAE (Computer-Aided Engineering) related technology has been used in this thesis for the contact analysis when the chain links of different shapes engaged with sprockets of different tooth shapes. The chain link design has been discussed through the force analysis which includes the comparison of the engaging force of the complete chain module and the sprocket, and the process of the complete chain link contact with the pin. We also further analyzed and discussed the way that whole links set engaged with the driving sprocket and driven sprocket in order to understand the relationship of contact force and tension situations during transmission. The purpose this research is to provide a design principle for development of inverted tooth chain by means of computer simulation.