Metal working – Method of mechanical manufacture – Electrical device making
Patent
1998-09-10
2000-07-18
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
H05K 330
Patent
active
060889136
ABSTRACT:
There are disclosed an apparatus for and a method of mounting electronic parts, in which uniaxial tables for positioning a board can be driven at high speed, and the speed of mounting of the electronic parts on the board can be further increased. A natural vibration waveform A of uniaxial drive portions, constituting an X-Y table for positioning the board, is beforehand measured. When a deceleration portion of each of speed patterns V1 to V4 of the uniaxial tables, is synchronized with a minus portion of the natural vibration waveform, the vibration of the uniaxial tables is amplified to become vigorous. When the deceleration portion of the speed pattern is synchronized with a plus portion of the natural vibration waveform, the vibration of the uniaxial tables is absorbed to be suppressed. Therefore, the natural vibration waveform of the uniaxial tables is measured, and is stored in a natural vibration waveform storage portion, and the vibration of the uniaxial tables, developing when stopping the driving of the uniaxial tables, is so controlled that the deceleration portion of the speed pattern of the uniaxial tables can be synchronized with the plus portion of the natural vibration waveform.
Arbes Carl J.
Matsushita Electric - Industrial Co., Ltd.
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