1787 Каталог MITSUBISHI 2020 Режущий инструмент Фрезы Резцы Сверла Пластины Стр.R035

Каталог MITSUBISHI 2020 Режущий инструмент для станков Стр. R035 1787 Lab2u

DRILL WEAR AND CUTTING EDGE DAMAGE DRILL WEAR CONDITION The table below shows a simple drawing depicting the wear of a drill's cutting edge. The generation and the amount of wear differ according to the workpiece materials and cutting conditions used. But generally, the peripheral wear is largest and determines a drill tool life. When regrinding, the flank wear at the point needs to be ground away completely. Therefore, if there is large wear more material needs to be ground away to renew the cutting edge. CUTTING EDGE DAMAGE When drilling, the cutting edge of the drill can suffer from chipping, fracture and abnormal damage. In such cases, it is important to take a closer look at the damage, investigate the cause and take countermeasures. R R035 TECHNICAL DATA