Full point width cutting blades
View Patent ↗A cutting blade for face milling wherein the cutting blade is constructed to cut a predetermined final dimension of a tooth slot along a portion of the cutting end (i.e. the primary cutting edge portion) of the blade and to cut the remainder of the tooth slot at an amount less that the predetermined final dimension of the tooth slot along the remaining portion (i.e. the secondary cutting edge portion) of the cutting end. The construction of the inventive cutting blade provides sharing of the cutting load amongst the blade cutting edges and also provides sufficient clearance in the tooth slot whereby the cutting blade can be repositioned to allow truing of the cutter, particularly with respect to the primary portion.
1. A gear cutting blade for forming a slot between adjacent teeth on a gear in a face milling process, said slot having a predetermined form, said cutting blade comprising:
a cutting end having a pressure angle cutting edge, a pressure radius cutting edge, a tip cutting edge, a clearance radius cutting edge and a clearance side,
a primary cutting edge defined by said pressure angle cutting edge, pressure radius cutting edge and tip cutting edge, said primary cutting edge being dimensioned to cut corresponding respective side, radius and bottom portions of said slot to the predetermined form,
a secondary cutting edge consisting of said clearance radius cutting edge, said secondary cutting edge being dimensioned less than that required to cut a corresponding radius portion of the slot to the predetermined form wherein during cutting with said secondary cutting edge, a distance exists between said clearance radius cutting edge and the position of said corresponding radius portion of the slot of the predetermined form.
2. The cutting blade of claim 1 being an inside cutting blade.
3. The cutting blade of claim 1 being an outside cutting blade.
4. The cutting blade of claim 1 wherein said distance is in the range of 0.002-0.0002 inch.