C18 ラインレーザ変位計を用いた非接触オンマシン計測システムの開発(OS5 加工計測・評価(2))

概要

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Recently, the demand for precision machining of dies and molds with complex shapes has been increasing. Though high performance CNC machine tools are applied widely for precision machining, machining error compensation is still necessary to meet the machining accuracy requirements. Usually, for precision measurement, a workpiece must be unclamped from a CNC machine tool. Then, the workpiece is measured by precision measurement device such as 3D CMM. After the machining error is clarified according to the result of measurement, the workpiece must be re-clamped for the machining of error compensation. However, the error compensation requires a highly skill of machinists, and spends a large amount of time and cost. Additionally, re-clamping of the workpiece causes positioning errors. Therefore, demands of an On-the-machine Measurement have been increasing. This paper describes an On-the-machine Measurement device that consists of a Line laser displacement sensor. This measurement device is attached on a spindle head of machine tool using magnetic clamps, and has special features that achieve non-contact scanning measurement, multi-point measurements, high-speed measurements, and the measurement of both the vertical surface and the steep slope.
一般社団法人日本機械学会の論文
2010-11-19