Manufacture and Analysis of a Shaving Cutter with New Relief Portion

• Main Authors: Uei-Der Wu, 吳威德
• Other Authors: Shinn-Liang Chang
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/m5kr7p

碩士 === 國立虎尾科技大學 === 動力機械工程研究所 === 92 === In this paper, a novel method of using a hob cutter with protuberance was proposed to manufacture the relief portion of a shaving cutter. This method avoided standard manufacturing problems, enhanced the efficiency of production, and also increased the stiffness of the shaving cutter. The mathematical models of a rack cutter and the generated shaving cutter were derived, from which the limiting depth of serration was found. With the derived equations, a solid model of the shaving cutter was also built. The gear set is assumed to be a rigid body. By applying the contact surface topology method, the shaving cutter contact pattern is simulated. In order to prove the correctness of the analysis-model, the finite element method is used to analyze the tooth contact situation under loads, the correspoding gear stresses and displacement distributions on the shaving cutter contact surface are also investigated. Based on the final comparison results of this paper, the proposed analysis method is proven that the shaving cutter manufactured by the proposed novel method can have higher stiffness than the shaving cutter with relief hole and can be used to analyze the gear contact pattern, and can also be extend to other types of shaving cutter, Besides, much more information about the contact pattern of the designed shaving cutter is obtained and this can help us to modify our design and offer some important design information which may reduce the shaving cutter development procedures.