کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
801400 | 904189 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Development of a spring loaded micro-pivot bearing
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
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چکیده انگلیسی
Ratchet and pawl mechanisms have been used for centuries in timing escapements and many other devices. As these devices are driven to ever-smaller dimensions, friction and other micro-forces become highly influential on device operation and reliability. This paper describes the design and assembly of a zero-friction, spring-loaded pivot bearing for possible replacement of the standard spring and rotational bearing in ratchet and pawl mechanisms. Three issues are discussed: development of a closed-form solution that relates bearing geometry and material properties to rotational spring rate, a macro-scale pivot bearing prototype to validate the closed-form solution, and the use of a micro-assembly workstation to assemble an ultra-miniature bearing comprised of micro-scale components.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Precision Engineering - Volume 34, Issue 1, January 2010, Pages 180-185
Journal: Precision Engineering - Volume 34, Issue 1, January 2010, Pages 180-185
نویسندگان
James F. (Red) Jones, Brain A. Kast, James M. Bailar,