Method of sharpening profile-sharpened cutting blades
AssigneeThe Gleason Works
InventorsHarry Pedersen, Charles G. Ellwanger
Life of this patent
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Abstract
A method of sharpening cutting blades of the type made from bar stock type material, the method comprising producing relief surfaces on the cutting profile surface. The method comprises forming first and second relief surfaces on the cutting profile surface. The first relief surface extends from a location inward of the cutting edge to the back face and is oriented at a first relief angle with respect to a side surface. The second relief surface extends from the cutting edge to the first relief surface and is oriented at a second relief angle with respect to the side surface with the second relief angle being smaller than the first relief angle.
Claims17
A method of sharpening a cutting blade of the profile-sharpened type made from a length of bar stock, said cutting blade having a base portion and a cutting end with said cutting end having a front rake surface, a back face, a top surface, and opposed side surfaces, said cutting end further including a cutting profile surface extending between said front rake surface and said back face, the intersection of said front rake face and said cutting surface defining a cutting edge, said method comprising:
- forming first and second relief surfaces on said cutting profile surface by removing stock material from said cutting surface,
- said first relief surface extending from a location inward of said cutting edge to said back face with said first relief surface being oriented at a first relief angle with respect to one of said opposed side surfaces,
- said second relief surface extending from said cutting edge to said location inward of said cutting edge with said second relief surface being oriented at a second relief angle with respect to said one of said opposed side surfaces, said second relief angle being less than said first relief angle.
A method of sharpening a profile-sharpened cutting blade of the type made from a length of bar stock, said cutting blade having a base portion and a cutting end with said cutting end having a front rake surface, a back face, a top surface, and opposed side surfaces, said cutting end further including a cutting profile surface extending between said front rake surface and said back face, the intersection of said front rake face and said cutting surface defining a cutting edge, said cutting surface further including a protuberant portion adjacent said top surface and extending from said front rake surface to said back face, said method comprising:
- forming a first relief surface on said cutting profile surface by grinding, said first relief surface extending from a location inward of said cutting edge to said back face with said first relief surface being oriented at a first relief angle with respect to one of said opposed side surfaces,
- forming a second relief surface on said cutting profile surface by grinding, said second relief surface extending from said cutting edge to said location inward of said cutting edge with said second relief surface being oriented at a second relief angle with respect to said one of said opposed side surfaces, said second relief angle being less than said first relief angle.
A profile-sharpened cutting blade for cutting gears and the like, said cutting blade being formed from a length of bar stock and comprising:
- a base portion and a cutting end with said cutting end having a front rake surface, a back face, a top surface, and opposed side surfaces, said cutting end further including a cutting profile surface extending between said front rake surface and said back face, the intersection of said front rake face and said cutting profile surface defining a cutting edge,
- said cutting profile surface comprising first and second relief surfaces,
- said first relief surface extending from a location inward of said cutting edge to said back face with said first relief surface being oriented at a first relief angle with respect to one of said opposed side surfaces,
- said second relief surface extending from said cutting edge to said location inward of said cutting edge with said second relief surface being oriented at a second relief angle with respect to said one of said opposed side surfaces,
- said second relief angle being less than said first relief angle.
Dependencies are inferred from the claim text.