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Brand: Behappy
Warranty Period: 3 Years
Certification: Csa, Pcoc, Reach, Iecee, Scoc, Ul, Epa, Gs
Support Customization: Oem, Odm, Obm
Place Of Origin: China
Species: Twist Drill Bit
Application: Metal Drilling, Pcb Drilling, Well Drilling, Wood Drilling
Surface Treatment: Black Oxide, Zinc, Plain
Packaging: plastic box,blister card,plastic bag
Productivity: 10 Thousand Sets
Transportation: Ocean,Land,Air,Express
Place of Origin: China
Supply Ability: 10 Thousand Sets
HS Code: 8205590000
Port: SHANGHAI,YIWU,FOSHAN
Payment Type: L/C,T/T,D/P,Paypal
Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,CIP
Basic Angle of Twist Drill
The back Angle of the selected point on the twist drill's main cutting edge is represented by the feed back Angle αOm in the point column profile. The column profile is a straight line parallel to the Bit axis through the selected point M of the main cutting edge, which rotates around the Bit axis to form a cylindrical surface. The back Angle α at Twist Drill's outer circle is usually 8° ~ 10°, and the back Angle at the transverse edge is 20° ~ 25°. This can compensate for the effect of the actual working back Angle at each point on the main cutting edge decreased due to the axial feed movement of Twist Drill Bit Details, and can adapt to the change of rake Angle.
Product Categories : Drill Bit > Twist Drill Bit
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.