| 摘要 |
<P>PROBLEM TO BE SOLVED: To control a magnitude of acceleration and deceleration (hereinafter called A/D) of members which hold and transfer an electronic circuit part to restrict well a positional misalignment, etc. of the electronic circuit part. <P>SOLUTION: When a printed wiring board is transferred at a target A/D which is a minimum or less among A/D tolerances of a plurality of electronic circuit parts which have been already temporarily mounted on a mounting plane, an unstable coefficient is acquired based on a mass, a height and a bottom area of the electronic circuit part (S2), and the A/D tolerances are determined based on data which prescribes the relation between the unstable coefficient and the A/D tolerances in accordance with a cohesive strength of a solder (S3). In a suction nozzle for transferring in parallel to the mounting plate to mount the electronic circuit part to the printed wiring board, the unstable coefficient is acquired based on a mass and a height of the electronic circuit part and an area of the suction plane, and the A/D tolerances of the suction nozzle are acquired considering a magnitude of a negative pressure, to be transferred at the target A/D of the A/D tolerances or less. The A/D are set considering a height, etc. of the electronic circuit part, thereby preventing effectively the positional misalignment, etc. of the electronic circuit part. <P>COPYRIGHT: (C)2004,JPO |
