Cutting
AssigneeCrystal Systems, Inc.
InventorFrederick Schmid
Life of this patent
Estimating the term…
Abstract
A cutting process in which a blade under tension is moved relative to a workpiece. The blade has a longitudinally-extending abrasive-holding portion defined by blade material that is softer than the workpiece to be cut and overlies a high tensile strength core. The abrasive-holding portion defines a cutting surface extending between opposite sides of the blade and defining less than one-half the total outer surface of the blade, and abrasive particles are partially embedded into a longitudinally-extending segment of the cutting surface but not into the sides of the blade.
Claims12
In a longitudinally-extending blade charged with abrasive particles, that improvement wherein:
- said blade includes a longitudinally-extending abrasive-holding portion of metallic material having a hardness less than that of said abrasive particles and overlying a blade core of greater tensile strength;
- said blade and said blade core are circular in transverse cross-section and said abrasive-holding portion comprises an annular layer overlying the peripheral surface of said core;
- said abrasive holding portion defines a cutting surface extending between the opposite sides of said blade and defining less than one-half the total outer surface of said blade;
- the thickness of said abrasive-holding portion is in the range of not less than about one-half the normal size of said particles to less than the nominal size of said particles;
- and
- said particles are embedded into a longitudinally-extending segment of said cutting surface of said abrasive-holding portion but not into the sides of said blade, said longitudinally-extending segment into which said particles are embedded defining in transverse cross-section an arc of less than 180.degree. whereby said particles do not project substantially beyond the sides of said blade.
In a longitudinally-extending blade of generally rectangular cross-section charged with abrasive particles, that improvement wherein:
- said blade includes a longitudinally-extending abrasive-holding portion of metallic material having a hardness less than that of said abrasive particles and overlying a blade core of greater tensile strength, the opposite sides of said blade being generally parallel to each other and defined at least in part by said core;
- said abrasive holding portion is of steel tempered to a hardness less than that of the remaining portion of said blade and defines a cutting surface extending between said sides of said blade and defining less than one-half the total outer surface of said blade;
- the thickness of said abrasive-holding portion is not less than about one-half the nominal size of said particles;
- and
- said particles are embedded into a longitudinally-extending segment of said cutting surface of said abrasive-holding portion but not into the sides of said blade.
Dependencies are inferred from the claim text.