Talyrond-TR is a modern sensitive instrument in nanometrology. The performance of Talyrond-TR machine is very important to find an optimal result in roundness measurement. In this paper, the experimental evaluation method of Talyrond-TR 73 machine is designed by using reference standard hemisphere. The influence of Talyrond machine performance in roundness measurement is presented. Signal respo...

The roller/bar friction-drive is an example of a high-precision rectilinear actuator. The roller/bar friction drive offers control advantages of low backlash and dead-band due to elastic averaging within the Hertzian contact region. It also offers simplicity, both of initial design and extensibility to longer ranges (as high as of the order of meters) while incurring only marginal effort/cost i...

Abstract –Demands of micro aspheric optical components such as lenses and mirrors are increasing for installing to the digital devices such as DVD, Digital camera, mobile phone and virtual reality system. As the devices become to be more compact and complicated, the molds shapes of lens and mirrors would become smaller and complicated, and then would become more difficult to be machined and mea...

Fast reduction of blood water volume due to ultra-filtration via hemodialysis machine and critical threshold of blood water volume can result in clinical complications such as hypotension. When blood water volume reduces during hemodialysis process, the concentration of blood forming elements will increase. One of the methods for the monitoring of the concentration changes is ultrasonic speed m...

In this paper, a fiducial-aided reconfigurable artefact is presented for estimating volumetric errors of multi-axis machine tools. The makes use an adjustable number standard balls as fiducials to build 3D which has been calibrated on coordinate measuring (CMM). This demonstrates its reconfigurability in and their locations according the characteristics workpieces developed kinematics tool were...