Means for controlling the feed rate of a work piece in a numeric

Details Means for controlling the feed rate of a work piece in a numeric Means for controlling the feed rate of a work piece in a numeric

1976-11-24

1979-03-20

Schran, Donald R.

Cutting

With control means responsive to replaceable or selectable...

83 49, 83 72, 83209, 83237, 83225, 83916, B26D 300, B23D 2700

Patent

active

041447808

ABSTRACT:
A numerically controlled nibbling machine including means for controlling the feed rate of the work piece with respect to the work tool of the machine and in which the feed distance or travel of the work piece is limited by a release time in which the work tool is disengaged from the work piece according to a predetermined number of strokes of the work tool per unit of time. The improvement of the invention comprises the provision of means for determining the release time of the work tool in a single stroke of the work tool for any number of strokes of the tool, and means for automatically determining the minimum accelerations and decelerations of the work piece required for travelling the feed distance and for forming a desired feed rate value for the work piece from the determined release time of the work tool and the feeding distance of the work piece per stroke.

REFERENCES:
patent: 3563123 (1971-02-01), Leibinger
patent: 3664217 (1972-05-01), Schiewek et al.
patent: 3958479 (1976-05-01), Leibinger

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