Detecting an Overall Dimension of a Plate-Shaped Workpiece

摘要

A method of detecting an overall dimension of a plate-shaped workpiece to be processed on a processing machine by a contactless-acting sensor includes moving the workpiece by a motion device of the processing machine in a predetermined direction until the sensor detects a first workpiece edge by a first change of state, detecting a first position of the workpiece where the first change of state happens by an evaluation device connected to the sensor, moving the workpiece by the motion device in a direction toward a second workpiece edge until the sensor detects the second workpiece edge by a second change of state, detecting a second position of the workpiece where the second change of state happens by the evaluation device, and determining an overall dimension of the workpiece by a determination of a distance between the first position and the second position of the workpiece.

主权项

1. A method of detecting an overall dimension of a plate-shaped workpiece to be processed on a workpiece processing machine by a non-contact sensor, the method comprising:
moving, by a motion device of the workpiece processing machine, the workpiece in a first predetermined direction until the sensor detects a first workpiece edge of the workpiece by a first change of state, wherein the sensor is configured to detect a presence and an absence of the workpiece and a change of state between the presence and the absence at a predetermined position of the workpiece relative to the sensor; causing reciprocal relative motion between the sensor and the workpiece with the sensor at the first workpiece edge; detecting, by an evaluation device coupled to the sensor, a first position of the workpiece associated with the first change of state; moving, by the motion device, the workpiece in a direction toward a second workpiece edge of the workpiece until the sensor detects the second workpiece edge by a second change of state; causing reciprocal relative motion between the sensor and the workpiece with the sensor at the second workpiece edge; detecting, by the evaluation device, a second position of the workpiece associated with the second change of state; and then determining a first overall dimension of the workpiece by a determination of a first distance between the first position and the second position of the workpiece.