Research on a New Type of Rigid-Flexible Coupling 3-DOF Micro-Positioning Platform

Abstract

A new type of rigid-flexible coupling three degrees of freedom (3-DOF) micro-positioning platform with high positioning accuracy and high bearing capacity is developed, which consists of flexible drive mechanism and rigid platform. The flexible drive mechanism consists of three sets of symmetrical parallel round flexible hinge structures, each with a wedge structure in the middle of the symmetrical parallel flexible hinge. The rigid platform has an inclined plane with the same angle as the wedge, while the wedge structure is used to achieve the self-locking effect. The flexibility matrix method and ANSYS are used to analyze the statics of the flexible drive mechanism. The first four natural frequencies of the platform are obtained by dynamic simulation analysis. A symmetrical rigid flexible coupling micro-positioning platform experimental system is developed. Output characteristics, positioning accuracy, relationship between frequency and amplitude, and bearing performance of the micro-positioning platform are tested. These experimental results obviously show that the micro-positioning platform has good motion characteristics, high positioning accuracy, large movement distance, and large load bearing capacity performance.

Compliance Modeling and Kinetostatic Analysis of a Generalized 3-PSS Compliant Parallel Micro-Motion Platform

“…In the context of precision operational environments, Jinhai Gao et al [ 13 ] introduced a low-coupling three-degree-of-freedom-compliant hybrid micromechanical arm for precision operating environments, with a motion range of up to 100 μm in each dimension. Guilian Wang et al [ 14 ] designed a three-degree-of-freedom micro-positioning platform with high positioning accuracy, strong load-bearing capacity, and large motion range, and analyzed its kinematic, kinetostatic, and frequency characteristics. Ning Chen et al [ 15 ] devised a three-degree-of-freedom-compliant nano-displacement mechanism and established its kinetostatic model using the compliance matrix method.…”

Design Optimization of an Electric Positioning Mechanism

“…The main function of the machine tool positioning mechanism in the industrial field is to place the workpiece quickly and accurately on the equipment, through the bearing of the body and the clamping parts, so that the workpiece is precisely fixed in the predetermined position [7]. The positioning mechanism commonly used at home and abroad are inclined wedge positioning mechanism, screw positioning mechanism, eccentric positioning mechanism, centering and positioning mechanism, hinge positioning mechanism and so on [8][9][10]. Among them, the oblique wedge localization mechanism is the most basic form of localization mechanism and needs to be combined with other methods in practical production.…”

Towards a Comprehensive and Robust Micromanipulation System with Force-Sensing and VR Capabilities

“…Micromanipulation has gained a lot interest in recent years, especially due to an increasing demand for systems capable of reliable and accurate micropositioning and sensing [ 1 , 2 ]. Some of the applications for such systems include biomanipulation [ 3 , 4 ], cell/tissue characterization [ 5 , 6 ], micro-assembly [ 7 ], among others.…”