Spring performance tester for miniature extension springs

DWPI Title: Spring testing device for testing miniature extension spring, has actuator is capable of cycling spring under compression and extension force
Abstract: A spring performance tester and method of testing a spring are disclosed that has improved accuracy and precision over prior art spring testers. The tester can perform static and cyclic testing. The spring tester can provide validation for product acceptance as well as test for cyclic degradation of springs, such as the change in the spring rate and fatigue failure.
Use: Spring testing device for testing compression and extension loads, deflections and rates of miniature extension spring used in mechanical applications such as firing and failsafe devices, medical devices, compact electronic controls, precision instruments, firearms, pharmaceutical delivery devices, aerospace and marine components, and petro-chemical processes.
Advantage: The spring performance tester improves the accuracy and precision of testing the performance of miniature extension springs.
Novelty: The spring testing device has an actuator system (14) comprising an actuator (30), a linear distance measurement system (45) and a first attachment point. A spring positioning system (16) comprises a load cell and a second attachment point. The load cell is capable of measuring the extension and compression load placed upon a spring attached between the first and second attachment points. The actuator is capable of cycling the spring under compression and extension force. The actuator is a voice coil linear actuator, and the load cell is a force transducer.
Filed: 9/4/2014
Application Number: US14477196A
Tech ID: SD 12501.1
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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