Spring Back Tester
Original Publication Date: 1989-Mar-01
Included in the Prior Art Database: 2005-Jan-27
A spring back tester was developed to detect for displacement freedom, or binding conditions, of each spring-loaded insert within a matrix of inserts. It will also detect for inserts that are assembled with defective springs which do not have specified spring constants (stiffness). This tester depresses each spring-loaded insert with uniform and gradually increasing pressure and detects for spring anomalies by comparing vertical displacement of the individual plunger which pushes the inserts into the hat with respect to a reference position. The tester 9 (see figure) consists of the following major components: 1. Gas Bearing Plungers: A linear array of plungers 12 housed within closely machined journal guides 22.