Continuous Evaluation of Machining Accuracy by In-Machine Measurements

• Autorzy: Zeleny J. , Janda M. , Novak M.
• Języki publikacji: EN

Abstrakty

EN

The paper describes a relatively new area of measuring methods for workpieces machined on numerically controlled machine tools. The area is called "in-machine measurement" and means measuring of workpieces still placed in the working space of the NC machine immediately after the NC machining operation. Measuring is performed by a touch probe inserted into the machine spindle and the movements of the probe are programmed to touch the workpiece in pre-selected points of machined surface. This makes it possible to compare the measured points with corresponding points of the CAD model and thus evaluate deviations in the normal direction between the ideal and real surfaces. In the RCMT - Research Center of Manufacturing Technology in Prague, the research of in-machine measurement methods is performed on two installed high-precision milling machines equipped with linear motors. The task is solved as a part of the HARDPRECISION European project with the aim to verify possibilities in replacing application of conventional coordinate measuring machines by continuous or periodic in-machine measurements on production machine tools.

Słowa kluczowe

EN

machining; accuracy; measuring

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2007
• Tom: Vol. 7, No. 1
• Strony: 5--14
• Opis fizyczny: Bibliogr. 2 poz., rys., tab.

Twórcy

autor

Zeleny J.

• RCMT, Research Center of Manufacturing Technology, CVUT Prague

autor

Janda M.

• RCMT, Research Center of Manufacturing Technology, CVUT Prague

autor

Novak M.

• RCMT, Research Center of Manufacturing Technology, CVUT Prague

Bibliografia

• [1] ISO 10 791 -7: Test conditions for machining centres - Part 7: Accuracy of a finished test piece, 1998.
• [2] ZELINSKI P., CAM Software For Probing, http://vvww.mmsonline.eom/articles/l 10401.html