高強度球状黒鉛鋳鉄歯車の歯切り加工に関する基礎研究 : 第1報,高速度工具鋼舞いツールによる切削試験

概要

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This paper discusses the hobbing of gears made of austempered spheroidal graphite cast iron, which has become the object of attention recently as a new material for gears. This iron has many advantages such as a high strength equivalent to steels, and is an economical material. But as things are hobbed before heat treatment, the cutting of teeth of a hardened gear blank is considered very difficult. The cost will be lower because the gear can be used without a finishing operation on the tooth surface removing the distortion from heat treatment. In cutting tests, at first a basic test was conducted by using a fly-tool having the same form as that of one blade of a hob. As a result, it was made clear that hobbing can be performed giving long tool life by using a tool with a large relief angle (20°).
社団法人日本機械学会の論文
1988-07-25