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Presently direct material deep-hole machining systems in common use classified by cutter system mainly include: Gun drilling system, BTA single-tube drill system and ejector drilling system. They represent the advanced, efficient hole processing technology. So, good precision effect can be achieved just through one-time feeding, and the machined hole position is accurate and precisely sized, having high straightness and coaxiality as well as very good surface smoothness and repeatability; various deep holes can be machined easily. Special deep holes such as cross holes, inclined holes, blind holes and flat-base blind holes can be solved very well.
In deep-hole drilling, combination of any cutter structure, cutting fluid pressure and flow aims for removing cutting chips from the hole in a better way. Viewed from machining principle and practice, any cutter system can drill out holes of excellent surface quality, small tolerance and good concentricity. Three common deep-hole drilling systems are introduced as follows.
gun drill machining system also named QYZ deep-hole drilling system, suitable for machining medium and small lots. It can be easily matched with common-use machine tools such as turning mill, boring mill, and machining center etc. the cutter adopts gun drill and high-pressure aerial fog as cooling and chip-removal power.
