Development of Parallel-CMM
(Coordinate Measuring Machine Using Parallel Mechanism)
We are developing Parallel-CMM as following researches;
Using 3 sets of parallel links, 3 DOF (Degrees of Freedom) Parallel-CMM
has been developed. An end effector of this mechanism translates of XYZ
axes. As an articulating probing system is installed at the end effector,
this mechanism can be used as CMM.
Figures on the right show construction of 3 DOF Parallel-CMM and photograph of prototype of 3 DOF Parallel-CMM.
 Construction of 3 DOF Parallel-CMM
 Prototype of 3 DOF Parallel-CMM
| Parallel-CMM using magnetic ball joint |
Accuracy of ball joints is key technology to develop Parallel-CMM. Therefore, we has
developed a magnetic ball joint that consists of a big ball, a magnet and three small
balls. We found that the magnetic ball joint has a simple mechanism, multi end effectors
and high accuracy.
 Construction of magnetic ball joint
| Calibration of Parallel-CMM |
Calibration of Parallel-CMM is very hard task. We evaluate some calibration methods and
develop novel calibration methods.
 Parallel-CMM using magnetic ball joint
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