Problems and solve that should be paid attension to when using gun drill

折损事故

Damage accident

折损时期

Depreciation period

主要原因

main reason

对策与确认

Countermeasures and confirmation

刃部切入时

When cutting edge

机械原因

Mechanical reasons

检查进给机构Check the feed mechanism

被削材料是否未夹紧Whether the material to be cut is not clamped

防震套筒的设定是否适当Is the setting of the anti-vibration sleeve appropriate?

钻具原因

Drilling bit reason

再研磨是否有问题 Is there a problem with regrinding?

套筒端面不良

Defective sleeve end face

是否漏油，切屑是否顺畅排出

Whether there is oil leakage and whether the chips are discharged smoothly

中期加工时

During intermediate processing

机械原因

Mechanical reasons

进给速度是否不均匀

Is the feed rate uneven?

刀尖损伤大

Big tip damage

参照刀具寿命项

Refer to tool life item

贯通寸前

Before Via cross hole

进给速度

Feed rate

在出刀时，抵抗力进给速度突然加快，此时应放慢进给速度。

When the tool is out, the resistance feed speed suddenly increases, and the feed speed should be slowed down at this time.

撤出时

when withdrawing

被削材料形状

Shape of the material to be cut

斜出刀时是否造成弯孔

Whether there is a bent hole when the knife is inclined

孔径小引起摩擦扭曲增大

Small hole diameter causes increased friction and distortion

放慢速度

slow down