Spring’s Multi-Objective Optimal Design in Pre-Positioned Fixture of Shaft Pressing and Assembling Machine

Abstract

Aiming at spring in pre-positioned fixture of shaft pressing and assembling machine subjected to alternating load and impact load, high working frequency and easy to fatigue failure, to guarantee spring service life and make the fixture more application scope, a multi-objective optimal math model had been established in this paper. In the model, spring’s basic structural parameters are used as design variables; strength, stiffness, and spring index and so on are used as constraint conditions; spring fatigue strength safety factor and volume are used as objective functions. And the model had been solved by using the unified objective function method and LINGO software. The example operation result shows that optimal spring volume is smaller than one of traditional design. And design purpose has been realized.

On Adaptable Design and Application of Mechanical Interface

“…In order to realize the rapid and reliable installing of the different individuation modules on the machine platform, interface design of modules is very important. The application case is an adaptable interface [7] designed for pre-positioned fixture [8,9] of shaft pressing and assembling machine.…”