Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1986-12-15
1988-10-11
Rosenbaum, Mark
Metal working
Method of mechanical manufacture
Assembling or joining
29760, 29833, 29834, 269903, B23P 1900
Patent
active
047760800
ABSTRACT:
A workpiece carrier and positioning system determines the particular orientation of each workpiece upon an individually identifiable carrier or frame to which it has been affixed. The carriers themselves are precisely registered at each workstation where an operation is to be performed upon the workpiece. Once registered at a workstation the carrier's identification is determined and the carrier or the operational tool of the workstation is offset and/or rotated as needed, according to the determined particular orientation of the workpiece, to allow precise alignment of the workpiece with the operation to be performed. The offset and/or rotation needed is individually determined for each workpiece at each workstation on the basis of the original particular orientation of each workpiece upon its individual carrier. A table is maintained that associates with each carrier the particular orientation of the workpiece carried thereon. The table allows workpiece orientations upon the carriers to be determined only once for each instance of mounting a workpiece upon a carrier, and also allows carriers to commence the sequence of workstation visits in an order of carriers that may differ from that in which the particular orientations were initially determined.
REFERENCES:
patent: 3854889 (1974-12-01), Lemelson
patent: 4291867 (1981-09-01), Williams et al.
Bonales et al., "PWB Work Board Holder-Sliding Locating Pin", Technical Digest, No. 55, Jul. 1979, pp. 3,4.
Chin Frances
Hewlett--Packard Company
Miller Edward L.
Rosenbaum Mark
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