Development of methods of carrying out experimental research of measurement errors for sets of geometrical parameters on NC equipment as in the case of a turbine disk

Abstract

The technique of experimental studies of measurement error groups of geometrical parameters on CNC equipment on example radial-angular positions of turbine disk is developed. This technique consists of a series of successive stages: analysis of parts and groups of geometric parameters; calibration of the measurement system; binding to the details; selection of the measurement cycle; development of the control program to be measured; measurements on CNC equipment and KIM; comparison of measurement results; error analysis, the establishment of their causes and the proposal to reduce them. For the analysis of obtained results is used a statistical method for determining the total error. The random component was evaluated by multiple repetition of the process of measuring the centering holes on CNC equipment and statistical processing of the results. The systematic error was estimated by comparing the data obtained as a result of control on CNC equipment with reference values. As reference data taken measurements on coordinate-measuring machine Global Performance 07.10.07. Control radial-angular arrangement centering holes turbine disk is possible using standard measuring cycle equipment. It is worth noting the dependence of the accuracy of measurement of the nominal angle of the dowel holes. With the increase in the angle measurement error increases. This technique is universally applicable to the measurement of many geometric parameters of the different parts.

About the authors

M. A. Bolotov

Samara State Aerospace University

Author for correspondence.
Email: maikl.bol@gmail.com

Candidate of Science (Engineering), Associate professor of the Department production of aircraft engines

Russian Federation

V. P. Alexeev

Samara State Aerospace University

Email: alexeev_v.p@mail.ru

Postgraduate Student of the Department production of aircraft engines

Russian Federation

N. D. Pronichev

Samara State Aerospace University

Email: pronichev@rambler.ru

Doctor of Science (Engineering), Professor of the Department production of aircraft engines

Russian Federation

References

  1. Alekseev V.P., Bolotov M.A., Bydanov V.V. Razrabotka metodiki provedeniya eksperimental'nykh issledovanii pogreshnosti izmereniya grupp geometricheskikh parametrov detalei GTD na oborudovanii s ChPU // Sbornik tezisov mezhdunarodnoy nauchno-tekhnicheskoy konferentsii «Problemy i perspektivy razvitiya dvigatelestroeniya». Samara: Samara State Aerospace University Publ., 2014. P. 28-29. (In Russ.)
  2. Renishaw Karmannyi spravochnik po datchikam dlya stankov s ChPU [Pocket Guide to sensors for CNC]. Range of solutions for process control. Issue № 1111. 2011. 40 р.
  3. Alekseev V.P., Bolotov M.A. Eksperimental'noe issledovanie pogreshnostei izmereniya radial'no-uglovogo raspolozheniya tsentriruyushchikh otverstii diska turbiny na oborudovanii s ChPU // Sbornik tezisov 40-oy mezhdunarodnoy molodezhnoy nauchnoy konferentsii «Gagarinskie chteniya». Moscow: Russian State Technological University Publ., 2014. (In Russ.)

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