Precision Product Location Ball Using Datums
Original Publication Date: 1988-Oct-01
Included in the Prior Art Database: 2005-Feb-15
A multiple ball datum nest is disclosed which defines the position of a product such as a casting for use in precision automated assembly. Each datum ball is rotatably spring mounted and includes a sensor to detect correct ball displacement. The nest has three datum balls in its base plate and one or two datum balls in its two vertical planes. The product is gently urged into the nest horizontally by pushers, while gravity supplies the required vertical force. Correct positioning is detected by the ball sensors. The 'ball datum' nest is designed to accurately locate product for the purpose of test, assembly and inspection, etc., operations. The nest shown in Fig. 1 consists of a horizontal base 1 in which are three ball datums 2.