Punching tool
OwnerSimon Bleichinventor
Life of this patent
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Abstract
A punching tool comprises a plurality of knives, which constitute an annular array and are provided with wedge-shaped cutting edges. Each knife is vertically adjustably secured to a vertical knife holder. Adjacent knife holders are detachably interconnected by a projection of one knife holder and a groove, formed in an adjacent knife holder and by a screw, which extends through a bore in the projection and is screwed in a tapped bore at the bottom of the groove.
Claims14
A punching tool comprising a plurality of knives, each of which is provided with a cutting knife edge, an inclined surface extending upwardly and outwardly from the cutting knife edge when the knives are assembled to form a continuous closed array, and a smooth inside surface;
- and a plurality of detachably interconnected, vertical knife holders to which respective ones of said knives are vertically adjustably fixed in such a manner that the inclined surfaces of the knives are positioned to exert a pressing force on material being punched and the inside surfaces of the knives merge with inside surfaces of the knife holders to define guide surfaces for parts punched from the material.
A punching tool for punching parts out of a stack comprising:
- a plurality of knife holders detachably interconnectable to each other to define a continuous closed array having vertically-extending sides;
- means for detachably interconnecting said knife holders;
- a plurality of knives adjustably connectable to respective ones of said knife holders, said knives having cutting edges positionable below the knife holders, inclined surfaces extending upwardly and outwardly from the cutting edges for pressing a stack being punched, and smooth inside surfaces merging with inside surfaces of said knife holders to define guide surfaces for guiding punched parts;
- and
- means for connecting said knives to said knife holders in such a manner that said knives are vertically adjustable with respect to said knife holders.
Dependencies are inferred from the claim text.