METHOD AND APPARATUS FOR NON-CONTACT MACHINING WITH DYNAMIC FEEDBACK CONTROL

Non-contact machining of workpieces on a mass production basis is accomplished with dynamic and adaptive feedback control to achieve accurate machining of a first and second feature to a specified combined size. The first feature is machined in the workpiece and measured to obtain a value which repr...

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Bibliographische Detailangaben
Hauptverfasser:	BOND, ROBERT D, DENHAM, THOMAS E
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING MACHINE TOOLS MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL TRANSPORTING WELDING WORKING BY LASER BEAM WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL
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Beschreibung
Zusammenfassung:	Non-contact machining of workpieces on a mass production basis is accomplished with dynamic and adaptive feedback control to achieve accurate machining of a first and second feature to a specified combined size. The first feature is machined in the workpiece and measured to obtain a value which represents the size. A process parameter is adjusted in accordance with the measurement value based on a stored transfer function so that the second feature will be machined with an extrapolated size such that the combined size will be within the acceptability limit. Additionally, the combined measurement values of successive workpieces is analyzed to determine the trend of change of the values with respect to the specified size and the parameter is adjusted to machine the first feature and the combined features more accurately.