Pick-Up Tool With Optical Sensing
Original Publication Date: 1987-Apr-01
Included in the Prior Art Database: 2005-Feb-01
In the automatic assembly of printed circuit boards, rectangular surface mounted-components are held in carrying trays with limited control of component alignment. A robot gripper includes three optical sensors in triangular formation which permits software to compute a corner of the component as the gripper is moved and rotated, and hence to accurately pick up the component. (Image Omitted) The problem is to pick rectangular surface-mounted components from carrying trays, then accurately populate circuit boards using robots. The components lie loose within rectangular tray sections (Fig. 1). Hence, before accurate placement can be performed, the component must be accurately picked.