Estimation Criteria for Tool Operating Life

The article gives the concepts of operational and technical resources and identifies a rational operating mode corresponding to the maximum production during the period of resistance and minimum wear of the tool, as well as some factors influencing the choice of cutting parameters that were not previously taken into account. We study examples of cutting parameters and their application making use of the graph of dependence of the resistance and the operating age on the cutting speed. Moreover, we show examples of approximations of the stability relations and the limits in which the power equations can accurately describe the experimental data. Finally, we give the data allowing to calculate optimal cutting parameters while maintaining the criterion of the required reliability of the cutting tool.

References

[1] GOST 25751-83. Instrumenty rezhushchie. Terminy i opredeleniya obshchikh ponyatiy [State standard 25751-83. Cutting tools. General terms and definitions]. Moscow, Izdatelstvo standartov Publ., 1983. 24 p.

[2] GOST 25.002-83. Nadezhnost’ v tekhnike. Terminy i opredeleniya [State standard 25.002-83. Industrial product dependability. General concepts. Terms and definitions]. Moscow, Izdatelstvo standartov Publ., 1983. 30 p.

[3] Obshchemashinostroitel’nye normativy vremeni i rezhimov rezaniya dlya normirovaniya rabot, vypolnyaemykh na universal’nykh i mnogotselevykh stankakh s chislovym programmnym upravleniem. V 2 chastyakh. Chast’ 2. Normativy rezhimov rezaniya [General machine-building standards of time and cutting mode for standardization of working on universal and multifunction NC machines. In 2 vol. Vol. 2. Cutting mode standards]. Moscow, Ekonomika Publ., 1990. 473 p.

[4] Granovskiy G.I., Granovskiy V.G. Rezanie metallov [Metal cutting]. Moscow, Vysshaya shkola Publ., 1985. 304 p.

[5] Granovskiy G.I., Panchenko K.P. Fasonnye reztsy [Forming tools]. Moscow, Mashinostroenie Publ., 1975. 309 p.

[6] Dreval’ A.E., Luzhanskiy M.S. Build-up formation and cutting tool workability. Izvestiya vysshikh uchebnykh zavedeniy. Mashinostroenie [Proceedings of Higher Educational Institutions. Machine Building], 2012, no. 12, pp. 3-7 (in Russ.).

[7] Danilenko B.D., Dreval’ A.E., Zhilis V.I. Vybor rezhimov rezaniya pri sverlenii [Cutting mode selection in process of drilling]. Trudy MGTU im. N.E. Baumana [Proc. of the Bauman MSTU], 1989, no. 535, pp. 30-34 (in Russ.).

[8] Bobrov V.F. Osnovy teorii rezaniya metallov [Fundamentals of the metal cutting theory]. Moscow, Mashinostroenie Publ., 1975. 343 p.

[9] Panchenko K.P., Danilenko B.D. Analysis of the origin of wear dependence extremality in cutting process. Izvestiya vysshikh uchebnykh zavedeniy. Mashinostroenie [Proceedings of Higher Educational Institutions. Machine Building], 2006, no. 1, pp. 79-82 (in Russ.).

[10] GOST R 50779.21-2004. Statisticheskie metody. Pravila opredeleniya i metody rascheta statisticheskikh kharakteristik po vyborochnym dannym [State standard R 50779.21-2004. Statistical methods. Determination rules and methods for calculation of statistical characteristics based on sample data]. Moscow, Izdatelstvo standartov Publ., 2004. 43 p.

[11] Kosilova A.G., Meshcheryakov R.K. Spravochnik tekhnologa-mashinostroitelya. V 2 t. T. 2 [Handbook of metalworker-technologist. In 2 vol. Vol. 2]. Moscow, Mashinostroenie Publ., 1986. 496 p.

[12] Danilenko B.D., Zubkov N.N. Vybor rezhimov rezaniya [Cutting mode selection]. Moscow, Bauman MSTU Publ., 2005. 52 p.

[13] Loktev A.D., Gushchen I.F., Batuev V.A. Obshchestroitel’nye normativy rezhimov rezaniya [General construction standards for cutting modes]. Moscow, Mashinostroenie Publ., 1991. 640 p.

[14] Malova A.N. Spravochnik metallista. V 5 t. T. 3 [Handbook of metalworker. In 5 vol. Vol. 3]. Moscow, Mashinostroenie Publ., 1977. 752 p.