TY - JOUR N2 - This article concerns a new method of assessing the thread cutting process and the quality of the formed thread using the method of optical observation of the workpiece during machining. A series of digital images of the thread profile was taken in transmitted light for each tool infeed. Such images, obtained with high resolution for three angular positions, were binarized, with the space between ridges taken in successive infeeds identified as “void”, and its projection was then parameterized. Two of these parameters, area of void and aspect ratio, were used as indicators of the technological quality of the thread. The suitability of the selected parameters for technological description of the thread was verified using the example of titanium alloy thread turning under ambient and cryogenic conditions. L1 - http://journals.pan.pl/Content/117854/PDF/art01.pdf L2 - http://journals.pan.pl/Content/117854 PY - 2020 IS - No 4 EP - 574 DO - 10.24425/mms.2020.134838 KW - process evaluation KW - thread measurement KW - titanium and its alloys KW - liquid nitrogen A1 - Zawada-Tomkiewicz, Anna A1 - Żurawski, Łukasz A1 - Tomkiewicz, Dariusz PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation VL - vol. 27 DA - 2021.01.07 T1 - Evaluation of titanium alloy thread quality during cutting SP - 563 UR - http://journals.pan.pl/dlibra/publication/edition/117854 T2 - Metrology and Measurement Systems ER -