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AssigneeVeeco Instruments Inc.
InventorsTimothy J. Fleming, Jeffrey J. Hohn, Christopher R. Holloman, Steven E. Wheeler, Charles N. Miller
Estimating the term…
A calibration method for calibrating a parts-handling device with respect to a computer vision camera includes the steps of moving a parts-handling device into contact with a touch-off block, and storing a value indicative of the position of the parts-handling device when it is in contact with the touch-off block. In addition, there may be two orthogonal surface on the touch-off block. By touching the parts-handling device against both surfaces, the parts-handling device can be calibrated for position offset in two orthogonal directions. For parts-handling devices that are rotatable, the parts-handling device may be rotated to a succession of predetermined angular positions and brought into contact with the touch-off block in each position. By combining the measured positions of the parts-handling device in each rotational position, the system can be calibrated to compensate for the offset from the camera to the parts-handling device as a function of rotational position as well.
In a parts handling system including a translatable parts-handling device and a vision system that includes an electronic camera, wherein the parts handling system is configured to translate the camera to the vicinity of a part, takes an electronic picture of the part, and, based upon the location of the part extracted from the picture and offset position data indicative of the offset between the camera and parts-handling device, move the parts handling device into position for handling the part, a method of calibrating the vision system to the parts handling device comprising:
Dependencies are inferred from the claim text.