Strength Analysis and Evaluation for Large-scale Gear Reducer Using KISSsoft

• Main Authors: Guang-Yi You, 尤廣毅
• Other Authors: 吳育仁
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/40023021399508073381

碩士 === 國立屏東科技大學 === 機械工程系所 === 100 === The gear speed reducer is usually placed between the prime mover and machine tools and connected by the coupling. Its main purpose is to deliver the power to electric motor by reducing the power loss of prime mover, and reduce the input speed of prime mover in order to increase the output torque. Long hours and high work load are likely to cause damage and fatigue failure of the internal mechanical components of the reducer such as gears, bearings and shafts. Also, the construction of mechanical analysis model for multi-stage deceleration high work load reducer system is a very complex process, and it takes a lot of testing and calculation time to manually verify the strength and the life of mechanical components. Therefore, it is desired to adopt the commercial gear system design software to assist the model construction and analysis. However, there are very few studies on inspection and evaluation for the accuracy of calculation results. Therefore, in this work we apply the commercial gear system design software KISSsoft to establish a set of analysis model and procedures of large-module Four stage gear speed reducer system for the industrial use in the rolling mill to quickly obtain all gear shaft deflections, safety factors of dangerous sections, tooth contact of gear pairs, root bending safety factors, and the life of all support bearings. Also, in order to verify the calculation results of KISSsoft, in this work we establish the evaluation procedures and mathematical models according to mechanics, mechanical design and gear standards and manually calculate and verify the reliability of the KISSsoft calculation results with the help of numemrical programs. Finally, the calculation results from the KISSsoft gear speed reducer model are verified and suggestions for improving strength and life are given as a reference for the industry in assessing and examining the design strength and drive performance for the development of a gear speed reducer.