| Summary: | 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.
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