Thermo-mechanical self-adaptive ball screw drive using thermal shape memory effect

I. Navarro y de Sosa; A. Bucht; T. Junker; K. Pagel; W.-G. Drossel

doi:10.1117/12.2009599

3 April 2013 Thermo-mechanical self-adaptive ball screw drive using thermal shape memory effect

I. Navarro y de Sosa, A. Bucht, T. Junker, K. Pagel, W.-G. Drossel

Proceedings Volume 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013; 868913 (2013) https://doi.org/10.1117/12.2009599
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2013, San Diego, California, United States

Abstract

An adaptive precision ball screw drive concept is presented in which a self-sufficient actuator is able to adjust the axial preload during the operation. The adjustment is effected by thermal shape memory alloy pucks, which either expand or contract according to the surrounding temperature field of the process. For this purpose, no external energy is needed and so the system is self-supported (energy harvesting). In this case, the extrinsic two-way shape memory effect occurs and the reversible full cycle of shape change is accomplished by a bias force of a flexure. Basing on temperature and force measurements on a double nut ball screw, a thermo-mechanical model is developed. Using the investigated principles adaptive mechanisms, a shape memory-based actuator is designed. Initial tests reveal an unwanted reduction of the preload of up to 800 N with rising temperature. Due to the shape memory actuation device, experiments results show an increase in axial load in approximated 70 % of the reduction.

Citation Download Citation

I. Navarro y de Sosa, A. Bucht, T. Junker, K. Pagel, and W.-G. Drossel "Thermo-mechanical self-adaptive ball screw drive using thermal shape memory effect", Proc. SPIE 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013, 868913 (3 April 2013); https://doi.org/10.1117/12.2009599

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available