Rotary punch having a helically clamped abutment

Details Rotary punch having a helically clamped abutment Rotary punch having a helically clamped abutment

1980-02-07

1981-11-24

Yost, Frank T.

Cutting

Cutting motion of tool has component in direction of moving...

Orbital motion of cutting blade

83658, 83698, B26D 102, B26D 162

Patent

active

043017010

ABSTRACT:
A rotary punch for the production of pre-shaped outer and inner cuts on mng webs or individual blanks of paper or the like, and more particularly, for the preparation of envelopes, flat bags or the like, includes rotating cutting tools whose cutting edges describe an envelope cylinder and at the instant of cutting impinge on a stationary abutment aligned at a slight inclination to the axis of rotation of the tools and so clamped that the operative edge of the abutment is everywhere at the same radial distance from the axis of rotation. The punch has a holder for the abutment, which holder has a bed molded from a curable liquid, and a cutting ledge of circular cross-section which is secured in the bed.

REFERENCES:
patent: 3073196 (1963-01-01), Marcalus
patent: 3119312 (1964-01-01), Henc
patent: 3595117 (1971-07-01), Grettve
patent: 3611855 (1971-10-01), Thousand, Jr.
patent: 3779123 (1973-12-01), Chafee
patent: 3823633 (1974-07-01), Ross

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