Detailed description of deep hole drilling processing of roller cone bit

1. The arbor is limited by the aperture, and the length is large, resulting in less rigidity, low hardness, easy to oscillate and taper during cutting, and affecting the straight line effect of the deep hole and the rough effect of the appearance.

2. When drilling and reaming, the coolant is very difficult to lose to the cutting position before the special equipment is used, which makes the use of the cone bit less effective and the chip removal is difficult.

3. When making deep hole production, you should not be able to watch the situation directly. You can only listen to its sound and watch the chips by experience to judge whether the cutting is normal.

4, the difficulty of chip removal, must use a credible way to implement chip breaking and control the length and shape of the debris, to facilitate the removal of the smooth, prevent debris blockage.