Automatic assembling machine

Claim 1

An automatic printed circuit board assembly machine in which a plurality of electronic parts are assembled on a printed circuit board at a plurality of predetermined assembling positions thereof, comprising: a base; a frame secured to said base; assembling heads mounted on said frame; a movable table provided on said base and carrying thereon said printed circuit board, said table being movable in an operating area to a selected one of a plurality of predetermined assembling head position coordinates, respectively, in dependence on the kinds of electronic parts to be assembled on said circuit board such that an origin of said printed circuit board is positioned at said selected one of said plurality of predetermined assembling head position coordinates to align said plurality of predetermined assembling positions to another plurality of predetermined assembling positions determined by said selected one of said plurality of predetermined assembling head position coordinates; assembling position coordinates memory means for storing assembling position coordinates corresponding to said plurality of predetermined assembling positions, respectively, of said printed circuit board; head position coordinates memory means for storing said predetermined assembling head position coordinates; head selection command memory means for storing data of which one of said assembling heads is to be selected; head selection command selector means for selecting said one of said assembling heads in response to an output signal from said head selection command memory means; an arithmetic unit responsive to output signals from said assembling position coordinates memory means and said head position coordinates memory means for producing an output data in dependence on said assembling position coordinates and said selected one of said predetermined assembling head position coordinates; and means for operating said movable table in response to the output data of said arithmetic unit.