发布时间：2021-06-23 13:43:16 来源：http://www.jnskdj.com 作者：骏豪 浏览量：
Surface quality crack or bite mark, the length of cutting cone is not enough, the length of front cutting cone is increased, the cutting angle is not appropriate, the cutting angle must match the working material, the sticking tool uses the working part of the tap which has been machined by relieving, so as to reduce the edge thickness. Use the taps with surface treatment, change the type of cutting oil and the way of oil injection to reduce the cutting speed. For chip blockage, use the screw tip taps or spiral groove taps to increase the lower hole diameter. The vibration wave is too sharp to reduce the cutting angle and the amount of backhoe. Improper grinding can avoid too small edge thickness. Avoid grinding the bottom of the chip tank.
High speed steel should be used instead of suitable material to prevent iron filings from blocking (or using screw tip tap, spiral groove tap, extrusion tap) and excessive cutting torque, and the diameter of bottom hole should be expanded as much as possible. Shorten the tapping length. Use fine thread instead. In order to increase the sharpness of the tap, increase the cutting angle. In order to reduce friction, torque, clearance angle of thread can be slightly increased, and blade thickness can be reduced. Use spiral groove tapping.
Improper use conditions, reduce the cutting speed, prevent the tap and the bottom hole eccentric or inclined, tap chuck adopts floating type, tap handle adopts adjustable type. When drilling the bottom hole of blind hole, prevent the tap from touching the bottom of the hole. If the regrinding is not appropriate, do not grind the chip groove to avoid too small edge thickness. The wear part should be worn off and regrinding time should be advanced.