| 摘要 |
PURPOSE:To improve the transfer positioning accuracy by performing a transfer positioning job for an object to be carried with higher accuracy after a truck is stopped at a station. CONSTITUTION:A rectangular load carrying platform 2 is set on an unmanned truck main body 1. The platform 2 contains an XYtheta state that can move horizontally and independently of the main body 1. Then the truck 1 carries a work 3 of a semiconductor, etc., put on the platform 2. The truck 1 travels on a prescribed moving route under the control of its own computer and a host computer and then stops at a station 4. Three distance sensors 51-53 consisting of proximity switches, etc., are provided on the side face of the platform 2 in its lengthwise direction. Thus the platform 2 is stopped at a prescribed position based on a marker 6 made of a magnetic substance. That is, the 1st and 2nd sensors 51 and 52 function to hold the platform 2 in parallel with the station 4; while the 3rd sensor 53 performs the final positioning job. Thus the stage 2 is moved for transfer of an object to be carried based on a detected distance. |
