Patent ID: 6088913
Filing Date: 2000-07-18
Classification: H05K,Y10T

Abstract:
An electronic parts-mounting method wherein transfer heads are indexably revolved around an axis of a rotary head, and an electronic part in a parts feeder is held by suction and picked up by a nozzle, and is transferred to and mounted on a board positioned on an X-Y table comprising uniaxial tables, said method comprising the steps of:(a) providing a waveform value representing a natural vibration waveform of said uniaxial tables;(b) storing said waveform value in a natural vibration storage portion;(c) producing a standard speed pattern for driving said uniaxial tables a given distance;(d) determining a vibration-absorbing point of said uniaxial tables in accordance with said waveform value and said standard speed pattern;(e) producing a correction speed pattern for driving said uniaxial tables said given distance to stop at said vibration-absorbing point;(f) driving said uniaxial tables in accordance with said correction speed pattern to suppress vibration of said uniaxial tables when said uniaxial tables are stopped;(g) mounting the electronic part on said board on said X-Y table while said uniaxial tables are stopped at said vibration absorbing point.