This standard specifies the type and size of double arc gear hobs. This standard is applicable to integral double-arc gear hobs with a normal modulus of 1.5 to 10 mm. Hobs manufactured according to this standard are used to process double-arc cylindrical gears whose basic tooth profile conforms to the provisions of GB12759.
1993GB/T 14348.1-1993 The basic types and dimensions of hobs for double-circular-arc gear
GB/T 14348.1-1993 The basic types and dimensions of hobs for double-circular-arc gear was changed to GB/T 14348-2007 Hobs for double-circular.arc gear.