US 5,077,961 A · Cutter blade for mowers of harvesting machines and a method for the production thereof

Abstract

The invention relates to a cutter blade for mowers of harvesting machines the cutter bevel of which comprises two zones of different inclination relative to the blade leaf plane wherein between the zone molded to the cutting edge and the zone extending to the upper blade plane a gradation is provided. It relates furtheron to a method for the production of said cutter bevels on cutting blades of mowers which comprise two zones having different blade angles relative to the blade leaf plane wherein in a first embossing process the zone of the cutter bevel extending to the upper blade plane is pressed into the blade blank in parallel to the cutting edge provided and in a subsequent embossing process, the zone extending to the cutting edge is molded on and the embosssing portion extending beyond the lower blade leaf plane is ground away.

Claims6

Dependent claims

A method for the production of cutter bevels on mower cutter blades having a blade leaf plane defined by upper and lower blade leaf planes, said blades having first and second bevel portions having the same or different blade angles relative to the blade leaf planes;

and comprising the steps of:
(a) in a first embossing step, pressing a first bevel portion of the cutter bevel into a blade blank from which the blade is formed, said first bevel portion extending to an upper blade plane of the cutter blade;
and
(b) in a second embossing step, molding a second bevel portion onto the blade blank extending to a cutting edge of said blank;
and
(c) grinding away the part of the second bevel portion extending beyond the lower blade leaf plane.

3 more elements

Dependencies are inferred from the claim text.

Cutter blade for mowers of harvesting machines and a method for the production thereof

Life of this patent

Cutter blade for mowers of harvesting machines and a method for the production thereof

Life of this patent

Abstract

Claims6