Abstract: A voice-coil motor for picking up chips is disclosed. Through the electromagnetic force generated from the voice-coil motor, the invention can accurately control its strength when picking up a chip. The procedure of picking a chip is as follows: first, a chip is separated from a blue film due to the force of a rising ejectpin; then a pickup head is used to suck the chip to an assigned place. In particular, when the ejectpin pushes the chip up, the pickup head is controlled to rise together with the ejectpin so that the ejectpin also raises the pickup head. Through the above-mentioned control, the stress on the chip can be reduced, preventing the chip from being broken.

Abstract: A position-, speed- and force-controllable chip accessing apparatus comprises a fixing seat, a rotational direction moving device, a linear direction moving device, and a position sensing device, characterized in that a flexible positioning means is provided at a proper central site of said fixing seat and is screw fixed with said rotational direction moving device; one side of said rotational direction moving device is coupled with said linear direction moving device, while the other side of said rotational direction moving device is coupled with said position sensing device screw; and that by measuring with a speed sensor and a position sensing device on said linear direction moving device, the control of the force, speed and moving distance can be achieved.

Abstract: A position-, speed- and force-controllable chip accessing apparatus comprises a fixing seat, a rotational direction moving device, a linear direction moving device, and a position sensing device, characterized in that a flexible positioning means is provided at a proper central site of said fixing seat and is screw fixed with said rotational direction moving device; one side of said rotational direction moving device is coupled with said linear direction moving device, while the other side of said rotational direction moving device is coupled with said position sensing device screw; and that by measuring with a speed sensor and a position sensing device on said linear direction moving device, the control of the force, speed and moving distance can be achieved.