| 摘要 |
PURPOSE:To prevent the increase of defective parts and reduction of working efficiency by detecting each position of workpieces and controlling the working position by calculating said detection value, in the simultaneous working for a plurality of workpieces. CONSTITUTION:On a table 1 on which a plurality of circuit boards 5a and 5b are loaded, a plurality of heads 3 and 4 for workings and a plurality of sensors 6a and 6b for detecting each position of circuit boards 5a and 5b are installed, and working is carried out, controlling the relative position between the table 1 and the heads 3 and 4 by a driving circuit. The relative position is controlled by calculating each position of the circuit boards 5a and 5b which is detected by the sensors 6a and 6b, by a CPU 7. Since the table 1, etc., are controlled by calculating each position of the circuit boards 5a and 5b, control to the proper position is permitted, and in increase of defective parts and reduction of working efficiency can be prevented.
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