Actual Problems in Machine Building 2021 Vol.8 N3-4

Actual Problems in Machine Building. Vol. 8. N 3-4. 2021 Technological Equipment, Machining Attachments and Instruments ____________________________________________________________________ 80 TO THE QUESTION OF THE NEED TO DEVELOP DIGITAL DUPLICATES FOR FRAME AND CASING PARTS Kostin P.N. , Research assistant, Post-graduate Student, e-mail: kostin95pavel@mail.ru Pashkov A.A., Ph.D. (Engineering), Associate Professor, e-mail: pashk0ff@mail.ru Irkutsk National Research Technical University, 83, Lermontov St., Irkutsk, 664074, Russian Federation Abstract The paper justifies the need for creation digital duplicates for frame and casing parts of a complex geometric shape. An approach to predicting the stress-strain state of a part at all stages of processing by the method of finite element modeling is considered. In this approach, it is supposed to take into account the technological heredity of the workpiece after each technological transition, i.e., the output parameters of one process will be the initial conditions for building a model of the next stage of workpiece processing. The introduction and use of this approach will make it possible to create a computerized technology that predicts deformations of parts at all stages of processing and ensures the necessary accuracy of parts at maximum productivity, without resorting to carrying out full-scale experiments. Also, this approach can eliminate the problem of warpage by deliberately changing the shape of parts at the stages of shaping or by changing the milling modes. Keywords Warpage, machining, frame, casing, shaping, levelling, case hardening.