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大多数圆盘铣刀、锯片铣刀和某些规格的切口铣刀先粗铣出齿间槽而在热处理后再磨齿。按传统刃磨工艺,铣刀在分度时要转动一个角齿距。在随后加工两相邻齿槽时经一短暂间隔(0.05—0.5秒),刀齿便从后面和前面方向得到两个热脉冲。由于从齿尖部分散热较困难,脉冲集聚在一起,会使切削刃部分的金属组织起变化,从而大大降低铣刀的寿命。为了消除热脉冲集聚的现象,在分度时须使铣刀转动一个以上的齿距数。这时(约20—50秒范围内)第一个脉冲的热量就能分散到金属及周围介质中。
Most disc mills, blade mills, and some specifications of nick cutters rougher out the interdental grooves to grind after heat treatment. According to the traditional sharpening process, milling cutter in the indexing to turn a corner pitch. After a short interval (0.05-0.5 seconds) between the subsequent processing of two adjacent gullets, the teeth will receive two heat pulses from the back and front. Due to the heat from the tooth tip is more difficult, the pulse together, will make the cutting edge of the metal part of the organization changes, thus greatly reducing the life of the cutter. In order to eliminate the phenomenon of heat buildup, the cutter must be rotated more than one pitch number. At this time (in the range of about 20-50 seconds), the heat of the first pulse is dissipated into the metal and the surrounding medium.