Karakteristike razvrtanja rupa za obradu dubokih rupa

(1) Leave a small and stable margin for the bottom hole. The bottom hole cannot be drilled at one time with a drill, and the size of one drilling is unstable. You should drill with a smaller drill first, and then use a suitable drill to ream the hole. The bottom hole allowance is between 0.05 and 0.1 mm. The roughness should not be too bad, and should reach Ra6.3μm.

(2) The cutting edge of the reamer must be ground, with a roughness of Ra0.4μm or less, and the transition arc between the guide edge and the cutting edge should be ground to avoid straining the parts when the tool is retracted.

(3) Brzina rezanja tokom razvrtanja je manja od 20mm/min, a brzina posmaka bi trebala biti 0,2mm/r.

(4) Dodavanje tečnosti za saponifikaciju prilikom razvrtanja pomaže u poboljšanju hrapavosti površine.