Analysis of a novel flexure hinge with three degrees of freedom

Abstract

Articles you may be interested inDesign and testing of a novel multi-stroke micropositioning system with variable resolutions Rev. Sci. Instrum. 85, 025002 (2014); 10.1063/1.4866475 Design and implementation of a novel rotary micropositioning system driven by linear voice coil motor Rev. Sci. Instrum. 84, 055001 (2013); 10.1063/1.4803187 Development of a novel 3-degrees of freedom flexure based positioning system Rev. Sci. Instrum. 83, 055114 (2012); 10.1063/1.4720410 Design and control of a decoupled two degree of freedom translational parallel micro-positioning stage Rev. Sci. Instrum. 83, 045105 (2012); 10.1063/1.3700182A six-degree-of-freedom precision motion stage Rev.The flexure hinge is widely used as the mechanism for a high precision positioning stage with a micrometer or nanometer resolution. In this article we propose a novel flexure hinge with three degrees of freedom in which the motions are restricted in the same plane. An analysis model is developed to analyze the flexure hinge. The results obtained are consistent with those of the finite element method. A characteristic study using the proposed model shows that this flexure hinge has a feature of linear load displacement. In addition, the most effective way to change the stiffness of this flexure hinge is to modify the notch's radius. A prototype of this novel flexure hinge has been manufactured and the measured characteristics prove the advantages of this proposed model.

Three flexure hinges for compliant mechanism designs based on dimensionless graph analysis

“…Therefore, the rotational center will change when flexure hinges generate displacement output. This is a negative aspect for the usage of the flexure-based mechanisms [24][25][26]. In order to obtain desirable flexure-based mechanisms to complete nanomanipulations, it is important to correctly choose the geometric parameters and predict the performance of flexure hinges.…”

Planar Compliances of Thin Circular-Axis Notch Flexure Hinges with Midpoint Radial Symmetry

“…Similar curved designs with thicker out-of-plane dimension for in-plane bending applications include planar rotarymotion bearings (Shusheng et al, 2010), the serial chain containing rigid members interspersed with straight-axis and one circular-axis flexible portions (Hsiao and Lin, 2001), and the hybrid bi-directional elastic-annulus flexure joint (Lee and Ziegert, 2007). Flexible robotic limbs for planar or spatial motion, comprised of circularaxis segments in serial flexible chains, have been analyzed and designed by several researchers including Lobontiu et al (2001b) and Callegari et al (2009) rigid-body model has been applied to design large-deformations curved beams of constant cross-section by Howell (2001) and Jagirda (2006), among others.…”

Compliances of symmetric flexure hinges for planar compliant mechanisms

“…Constant cross-section leaf spring hinges were modeled analytically by Thorpe [1], Weinstein [2], and Smith and Chetwynd [3]. Paros and Weisbord [4], Hsiao and Lin [5], Lobontiu [6], and Yong et al [7] provided analytical modeling of right circular flexures. Smith et al [8], Smith [9], and Chen et al [10] studied right elliptical flexure hinges.…”