Cutting – Tool or tool with support – Rotatable type
Patent
1993-12-20
1998-08-18
Jones, Eugenia
Cutting
Tool or tool with support
Rotatable type
83345, 8369841, B26F 114
Patent
active
057945020
ABSTRACT:
A punch roll which may be used in existing roll piercing systems. The punch roll has radially oriented punches which cooperate with dies upon coordinated rotation to pierce holes in material. The punch roll features a two-piece construction. The two pieces include an annular ring which is maintained in coaxial relationship with a cylindrical member. In the preferred embodiment, the cylindrical member has axially oriented spline-like recessed portions formed in the peripheral surfaces thereof. The recessed portions are preferably oriented parallel to the axis of the member. In the punch roll annular member, the radially oriented bores provide a close tolerance sliding fit with a first portion of a punch. The second portion of the punch has a larger cross-section than the first and is received in the recessed portion located between the annular ring and the cylindrical member. In this manner, the bores in the outer member and the recesses in the cylindrical member cooperate to retain the punches in preselected radially oriented positions. In the punch roll, the innermost portion of the punch abuts the peripheral surface of the cylindrical member and thereby transmits all of the forces from the piercing operation directly to the cylindrical member.
REFERENCES:
patent: 1485782 (1924-03-01), Fischer
patent: 3116536 (1964-01-01), Tobey
patent: 3192810 (1965-07-01), Amato
patent: 3205744 (1965-09-01), Huck
patent: 4326909 (1982-04-01), Slavik
patent: 4459891 (1984-07-01), Kies et al.
patent: 4653363 (1987-03-01), Lang
Arens Cornelis G.
Meyer William Anthony
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