کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7180685 1467845 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Isotropic springs based on parallel flexure stages
ترجمه فارسی عنوان
چشمه های ایزوتروپیک بر اساس مراحل خمشی موازی
کلمات کلیدی
بهار مرکزی، انعطاف پذیری، مکانیسم مطابقت، سفتی، سختی، نقص ایزوتروپیک،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
We define isotropic springs to be central springs having the same restoring force in all directions. In previous work, we showed that isotropic springs can be advantageously applied to horological time bases since they can be used to eliminate the escapement mechanism [7]. This paper presents our designs based on planar serial 2-DOF linear isotropic springs. We propose two architectures, both based on parallel leaf springs, then evaluate their isotropy defect using firstly an analytic model, secondly finite element analysis and thirdly experimental data measured from physical prototypes. Using these results, we analyze the isotropy defect in terms of displacement, radial distance, angular separation, stiffness and linearity. Based on this analysis, we propose improved architectures stacking in parallel or in series duplicate copies of the original mechanisms rotated at specific angles to cancel isotropy defect. We show that using the mechanisms in pairs reduces isotropy defect by one to two orders of magnitude.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Precision Engineering - Volume 43, January 2016, Pages 132-145
نویسندگان
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