Patent ID: 6311590
Filing Date: 2001-11-06
Classification: B23F,Y10T

Abstract:
A method of producing a cutting edge on a two-side-ground cutting blade for cutting an epicycloid-shaped tooth surface which is a duplicate of an epicycloid-shaped tooth surface cut by a three-side-ground cutting blade, said two-side-ground cutting blade having a cutting edge, hook angle and a side rake angle and said three-side-ground cutting blade having a cutting edge, hook angle and a side rake angle with said hook angle and said side rake angle of said three-side-ground cutting blade being different than those of said two-side-ground cutting blade, the method comprising:defining a reference cutting edge on said two-side-ground cutting blade,defining a cutting edge on a three-side-ground cutting blade,identifying a plurality of points on said reference cutting edge and corresponding points on said cutting edge of said three-side-ground cutting blade,identifying a respective zero hook plane for each of said points on the cutting edge of said three-side-ground cutting blade,repositioning each point on said reference cutting edge into the respective zero hook plane for the corresponding point on the cutting edge of said three-side-ground cutting blade,determining the distance between the repositioned points and the respective corresponding points of the three-side-ground cutting blade,adjusting the position of each point on said reference cutting edge by the respective determined distances,removing material from or adding material to the two-side-cutting blade in accordance with the positions of the adjusted points whereby a new cutting edge is formed on the two-side-ground cutting blade which cuts an epicycloid-shaped tooth surface which is a duplicate of that cut by the three-side-ground cutting blade.