Open AccessMathematical Support and Software for Processing Results of Metrological Roller Screw Detail Measurements
Author(s) -
Д. С. Блинов,
M. I. Morozov,
Pavel Anisimov
Publication year - 2015
Publication title -
nauka i obrazovanie
Language(s) - English
Resource type - Journals
ISSN - 1994-0408
DOI - 10.7463/0115.0753736
Subject(s) - metrology , software , engineering drawing , computer science , engineering , mechanical engineering , software engineering , systems engineering , manufacturing engineering , mathematics , programming language , statistics
Roller screws (RS) featuring very high operational parameters are the most promising transformers of rotational motion into translational motion. The original gear design with a number of peculiarities and precision accuracy in manufacturing its essential details, first of all, thread ones allow us to have high operating parameters of RS. Errors of manufacturing special thread of such details greatly affect the load carrying capacity, precision, reliability, and endurance of RS. That is why the challenge is highly accurate metrological control of errors, which have the greatest influence on specified parameters, and processing of measurement results. Major errors include deviations of real pitch of thread from nominal ones and deviations of real thread profiles from nominal ones. The aim of this paper is to determine abovementioned errors, which were measured by high-precision computerized devices, namely: MITUTOYO CV-2000 contour measurement instrument; Form Talysurf PGI 420 contour measurement instrument. Both have a measurement range of 100 mm and resolution of 0.2 μm. As far as a rental cost of the contour measurement instrument was rather high and a software of this device did not allow us to obtain all required information on the thread profile errors of interest, a thread profile was measured using a contour measuring device on the sampling length. Measurement results were copied to the USB flash drive, and then conversion of obtained results and calculation of all errors of interest were carried out on ECM by means of specially designed software. For example, when using a contour measurement instrument MITUTOYO CV-2000, to make measurement of RS screw on the sampling length of 100 mm along one path, the longitudinal and transverse coordinates of 57411 points of thread profile were obtained. Specially developed mathematical support was used as the basis for software. Programs written in Delphi language have been sent to the Federal Institute for Industrial Property of the RF for registration. Calculation results represent information on the left and right side of each turn of measured detail and final parameters for all measured turns. Developed software may be applied to process results of control of RS thread details as well as high-precision screws and nuts with metrical, inch and trapezium thread