Two more commonly used straight shank processing techniques

Update:16-04-2020
Summary:

The processing Straight Shank process of high-speed ste […]

The processing Straight Shank process of high-speed steel hexagonal shank twist drill: preparation → sandblasting → flat end face → drilling → boring → assembly (assembly of the twist drill and hexagonal shank) → finishing after assembly → straightening → marking → Inspection → anti-rust packaging. There are two kinds of high-speed steel fixed handle twist drill processing methods: milling and rolling processing methods.

Straight Shank

1. Process of rolling high speed steel fixed handle twist drill
Cutting of blade shank → flat end face → welding → annealing → car welding seam → turning drill tip → process hole of shank end → turning blank outer circle → rough grinding outer circle → cleaning → rolling groove and blade back → cutting tip → Sharpening → straightening → handle part → coarse grinding edge outer circle → heat treatment → sandblast straightening → throwing groove → grinding center hole → grinding handle outer circle → grinding edge part outer circle → cutting edge → marking → rust prevention package.

 

2. Milling process of high speed steel fixed shank twist drill
Blade shank cutting → flat end surface → welding → annealing → car welding seam → car drill tip → handle end process hole → car blank outer circle → rough grinding outer circle → milling groove → milling cleaning edge → rough grinding burr → Heat treatment → sandblasting straightening → rough grinding outer circle → semi-finish grinding outer circle → cutting edge → fine grinding outer circle → mark → surface strengthening treatment → anti-rust packaging.