Preview

Proceedings of the Southwest State University

Advanced search

RATIONAL CONDITIONS OF COMPLEX SURFACES OF PARTS

https://doi.org/10.21869/2223-1560-2018-22-1-34-44

Abstract

An important scientific and practical task is to increase the efficiency of designing technological processes for manufacturing parts of a complex form. The labour intensity of design work is connected with a wide variety of shapes and sizes of products created, the use of a wide range of structural materials and their combinations, presence on the machined surfaces of secondary holes of different sizes and locations, grooves, flats, recesses, and other elements that break the contour of the base surface of the workpiece and cause intermittence of the turning process. The purpose of this work is to use the complex part capabilities for the design of the group technology of machining. A complex part consisting of a complete set of all major and minor structural elements is an object artificially created for modeling the conditions of interrupted cutting of a sufficiently large group of similar complex parts of the Rotary body class. The condition of the part design causing intermittent cutting adversely affects the strength of the cutting element, due to possible brittle fracture in collision with the surface of the contour break of the base surface of the workpiece. To keep the operability of the active part of a cutting tool, a method is developed in which the initial meeting of the tip of the cutting element with the workpiece is replaced with a flat contact in the front surface area as far (distant) as possible from the brittle tip and cutting edges. Thus, the detection of elements of intermittences in the complex part and the conditions of shock-free turning of structurally complex surfaces of parts based on them allow us to determine the adjusted angles of the cutter by calculation and thereby minimize the negative factors of intermittent cutting that adversely affect the tool performance. The presence of objective information about rational conditions of shock-free turning allows us to make changes that improve the complex part machineability, unify the turning operation and use a specific technological process for any part of the group, excluding possible errors that could occur during usual design.

About the Authors

E. A. Kudryashov
Southwest State University
Russian Federation


I. S. Krylov
JSC «Scientific Research Engineering Institute»
Russian Federation


N. A. Khizhnyak
Southwest State University
Russian Federation


References

1. Митрофанов С.П. Групповая технология машиностроительного производства: в 2 т. Т.1. Организация группового производства. 3-е изд., перераб. и доп. Л.: Машиностроение, Ленингр. отделение, 1983. 407 с.

2. Организация группового производства / под общей редакцией С.П. Митрофанова и В.А. Перова. Л.: Лениздат, 1980. 288 с.

3. Кудряшов Е.А., Смирнов И.М., Яцун Е.И. Применение группового метода ремонта деталей класса Тела вращения инструментом из композита // Ремонт, восстановление, модернизация. М.: Наука и технологии, 2017. №4. С. 7-10.

4. Kudryashov E. A., Nikonov А. M., Rogovskii V.S., Stetsurin A. V. Using superhard tools in discontinuous cutting. Russian Engineering Research, 2009, vol. 29, no. 2, pp. 210-213.

5. Характерные особенности процессов резания прерывистых поверхностей деталей / Е.А. Кудряшов, И.М. Смирнов, Т.Е. Каменева, Н.А. Хижняк // Известия Тульского государственного университета. Технические науки. 2017. Вып. 8 (ч.2). С. 204-209.

6. Совершенствование инструментального обеспечения процессов точения конструктивно сложных поверхностей / Е.А. Кудряшов, И.М. Смирнов, Е.В. Павлов, Е.И. Яцун // СТИН. Станки. Инструмент. 2017. №9. С. 23-28.

7. Carou D., Rubio E. M., Davim J.P. Discontinuous cutting: failure mechanisms, tool materials and temperature study - a review. Reviews on Advanced Materials Science, 2014, vol. 38, no. 2, pp. 110-124.

8. Кудряшов Е.А., Каменева Т.Е. Способ обработки винтовых поверхностей резанием с ударом. Пат. №2633815 С2 РФ. Заявл. 25.03.2016г, опубл. 18.10.2017г.

9. Алтухов А.Ю., Кудряшов Е.А., Яцун Е.И., Павлов Е.В., Смирнов И.М. Способ обработки поверхностей резанием с ударом. Пат. №2013103125/02 РФ, 2014, бюл. № 21.

10. Кудряшов Е.А., Смирнов И.М. Применение метода управления режущей частью инструмента для повышения эффективности процесса прерывистого резания // Известия Юго-Западного государственного университета. Серия: Техника и технологии. 2013. №4. С. 23-28.

11. Кудряшов Е.А., Смирнов И.М., Каменева Т.Е. Исследование работоспособности инструментального материала композит 10 в условиях прерывистого резания // Известия Тульского государственного университета. Технические науки. 2017. Вып. 5. С. 362-370.


Review

For citations:


Kudryashov E.A., Krylov I.S., Khizhnyak N.A. RATIONAL CONDITIONS OF COMPLEX SURFACES OF PARTS. Proceedings of the Southwest State University. 2018;22(1):34-44. (In Russ.) https://doi.org/10.21869/2223-1560-2018-22-1-34-44

Views: 401


Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.


ISSN 2223-1560 (Print)
ISSN 2686-6757 (Online)