Coordinate Measuring Machine based on Parallel Kinematics

Coordinate Measuring Machine Using Parallel Mechanism

Ab s trac t: T hi s s tu dy p rop ose s a n ew coor di n ate me as ur in g mac hi n e (C MM) b ase d on a s pat i al 3DO F p aral l el me ch ani s m. T he u se of th i s me ch ani s m wi l l p oten ti al l y i mp rove th e s ti ff ne s s, acc ur acy an d ef fi ci e nc y. T hi s p ape r d es cr i be s th e fu nd ame nt als an d an exp er i men tal CM M. T he i nf lu en ce of l i nk l ayout on th...

The Uncertainty of Parallel Model Coordinate Measuring Machine

The Stewart platform is one of 6-DOF (6 degrees of freedom) parallel mechanism. A parallel mechanism is a mechanism to connect six actuators in parallel between the base and the stage. It is necessary to calibrate the kinematic parameters that compose the mechanism in order to use the parallel mechanism as the coordinate measuring machine. Additionally, it is necessary to estimate the uncertain...

Kinematic calibration of a parallel robot using coordinate measuring machine

In the applications of parallel robots, kinematic calibration is required to eliminate the errors resulting from the manufacturing and assembly. In this paper, a new method for calibrating a parallel robot is proposed. An error model for kinematic calibration is constructed using differential geometry method. All leg length information and pose error are obtained based on measurement results co...

Error Analysis of Effects of Workpiece Coordinate System Misalignment When Measuring on a Coordinate Measuring Machine

Ever since the introduction of coordinate measuring machines (CMMs), their measuring accuracy has been studied. Much research work has focused on the accuracy characteristics of the measuring system, e.g. the static errors and dynamic errors of the machines. However, the additional error sources can be introduced when a measuring coordinate system is set up. This paper describes how to analyse ...

A Hoteyetm-based Coordinate Measuring Machine for the Forging Industry