午夜黄频在线视频|青青青草久久久九九九999日韩|看视频一区二区欧美精品123区|国产二区中文字幕

News and information

News

Protuberance hobs

2021-08-19 11:18:25 jiangxingTools 3190

Protuberance hobs

Hobs with protuberance are roughing cutters whose profile differs from the standard type to DIN3972 in that protuberances are present on the tips which project beyond the straight flanks of the basic profile.

The purpose of the protuberance hobs is to create a clearance cut on the tooth roots of spur gears, This is necessary when the teeth are to be finish machined by shaving, grinding or hobbing with a carbide skiving hob.