A broca central foi usada em tornos por alguns anos e foi usada para fazer o furo central das peças do eixo

The Center Drill Bits are Used for the Machining of Center Holes on the End Faces of Shafts and Other parts It is used for the precise positioning of prefabricated holes Guides the twist drill bits to perform hole processing to reduce errors and accurately locate the holes It is the positioning base surface for

Something About the Production of Taper Shank Twist Drill Bit The morse taper shank twist drill bit has the production technology of milling and extrusion The milling production method requires a high-power milling machine The rough material of the twist drill is a fixed-length material, which has a large amount of waste and low efficiency