Patent ID: 6683688
Filing Date: 2004-01-27
Classification: G01R,H05K

Abstract:
A method for gauging a device for equipping printed circuit boards with components, comprising:equipping a test plate with component simulations of the components at defined placement points; determining a position of the simulations relative to the reference marks of the test plate using an optical sensor on the basis of positionally defined, optical structure features of the simulations; calculating at least one correction parameter for a control device of the device for equipping printed circuit boards from deviations of the position of the structural features from a reference position, wherein the reference marks are locally applied to the placement points of the simulations; and identifying the position of the structural features relative to the local reference marks respectively allocated to them, wherein the distance between the reference marks and the structure features of the simulations is less than the width of a scan field of the optical sensor, wherein the optical sensor is successively moved over the reference marks and the structure features, wherein the optical sensor registers images of the locations that respectively contain both the reference mark and the structure feature, wherein the relative position of the respective structure feature and the reference mark relative to one another is determined by evaluating the registered images, wherein the optical sensor is part of the device for equipping printed circuit boards and wherein the evaluation of the images and the calculation of the correction parameter is done in conjunction with an optical evaluation device of the device equipping print circuit boards.