Method for changing the direction of a cutter edge of a cutting

Details Method for changing the direction of a cutter edge of a cutting Method for changing the direction of a cutter edge of a cutting

1991-01-10

1993-02-23

Watts, Douglas D.

Cutting

Processes

83 56, 83 761, 83939, B26D 530

Patent

active

051880091

ABSTRACT:
A method for changing the direction of a cutting edge of a cutting plotter in order to align the cutting edge in the direction in which the initial portion of the desired cut will be made, prior to beginning a cut in the effective plotting area of a sheet mounted on a recording surface. By preliminarily aligning the cutting edge along the cutting direction, the cut can be made accurately along, for example, a straight line from the starting point of the cut. The method is performed with a cutting blade with a main edge directed diagonally upwardly from a cutting point, the cutting blade being rotatably supported in a holder for rotation around its axial center. The edge of the cutter can be aligned in a certain direction by first pressing the blade against a non-used portion of the sheet and moving the cutter therealong in a predetermined direction to cause rotation of the main edge of the cutter in the holder to align it in a first predetermined direction. Then, the cutter is raised from the marginal portion of the sheet, moved to a position over the cut-starting point of the effective plotting area of the sheet, and lowered such that the cutting point of the blade is pressed against the sheet at the cut-starting point. Finally, the cutter is moved relative to the sheet in order to cause the blade to pivot about its cutting point by a predetermined angle until it is aligned in the predetermined desired cutting direction.

REFERENCES:
patent: 3735660 (1973-05-01), Pearl
patent: 3766813 (1973-10-01), Pearl

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