Apparatus for cutting material sheet into trapezoidal pieces

Details Apparatus for cutting material sheet into trapezoidal pieces Apparatus for cutting material sheet into trapezoidal pieces

1987-01-08

1988-04-26

Schran, Donald R.

Cutting

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

Tool carrier shuttles rectilinearly parallel to direction of...

83316, 83559, 83581, B23D 2504, B26D 160

Patent

active

047396830

ABSTRACT:
A turning arm has an inverted U-shape and is supported for rotational movement by two pairs of horizontally disposed crank shafts. A lower cutter holder supporting base is mounted for movement only in the direction feeding of material to be cut. A turning table is rotatably mounted on an upper surface of the base for rotation about a substantially vertical axis, and an upper cutter holder having an upper cutter is rotatably mounted on the turning arm above the lower cutter holder for rotation about the substantially vertical axis. The upper cutter and lower cutter are constrained to move together in the horizontal feed direction, while the upper cutter is permitted to reciprocate vertically relative to the lower cutter.

REFERENCES:
patent: 3811354 (1974-05-01), Ito
patent: 4103576 (1978-08-01), Benz
patent: 4196645 (1980-04-01), Shimizu et al.

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