External Sensor-less On-machine Measurement of Workpiece for Ultra-precision Machine Tools

simulation of air gap thickness on air spindle vibrations in ultra precision machine tools

air spindles are one of the main elements of precise machine tools. vibration of these spindles is one of the vital issues necessary for investigation. among parameters which influence air spindle vibrations are rotational speed, compression air method, input nozzle diameter, air gap pressure. in this study using ansys, the effects of air gap thickness on air spindle vibrations have been invest...

On-machine Measurement of Large-scale Workpiece Based on Machine Vision

On-machine measurement(OMM) based on machine vision has been hot research topic in recent years because coordinate measuring machine(CMM) measurement requires significant resources in operating time and cost. This paper aims to develop an OMM method with a manipulator and industry camera. First, an on-machine calibration method of industry camera based on image sequence is studied. A set of mon...

simulation of air pad shape on pressure distribution in air gap of air table in ultra precision machine tools

air pads are applicable in ultra precision machines very much. two main components of these machines, spindle and table, use the advantages of such systems. the performance and efficiency of air pads have big influence on the whole machine quality. parameters affecting pressure distribution of air tables may be considered as, 1) air compressing method, 2) air nozzle diameter, shape, and size, 3...

Re-Usable Tools for Precision Machine Translation

The LOGON MT demonstrator assembles independently valuable general-purpose NLP components into a machine translation pipeline that capitalizes on output quality. The demonstrator embodies an interesting combination of hand-built, symbolic resources and stochastic processes.

Profile Generation for Brittle Materials by Using Ultra-precision Lathe with On-machine Measurement System