scholarly journals THE PROBLEMS OF ENSURING SPECIFIED PERFORMANCE PROPERTIES OF MACHINE PARTS DURING MULTITRANSIENT MACHINING

Author(s):  
A. A. Zhdanov ◽  
I. V. Firsov ◽  
A. A. Kozhevnikova ◽  
E. V. Kapinosova

The article considers the problems of ensuring the specified operating properties of machine parts during multitransient machining, and more precisely, the discrepancies and errors laid down at the stage of technological process design.

2021 ◽  
pp. 68-71
Author(s):  

The use of mathematical models is of great importance for the automation of the design of technological processes. Representation of the geometric parameters of the part in the form of mathematical models allows automating the development of the structure and calculation of the parameters of the technological process, which is important for the complete digitalization of the technological preparation of production. Keywords: technological process, design, mathematical model, digitalization. [email protected]


2020 ◽  
Vol 175 ◽  
pp. 05008
Author(s):  
Mikhail Tamarkin ◽  
Elina Tishchenko ◽  
Elena Murugova ◽  
Alexandr Melnikov

This paper presents the results of research on the processing with a multi-contact vibratory hardening tool ball-rod hardener. Theoretical relationships are derived for the calculation of surface roughness, the depth of the hardened layer, and the degree of deformation. The formula for determining the processing time is identified. The technological process reliability with a ball-rod hardener is investigated. Methodology of the process design with regard to its reliability assurance is presented.


2013 ◽  
Vol 849 ◽  
pp. 195-199
Author(s):  
Jiranuwat Porntadawit ◽  
Vitoon Uthaisangsuk ◽  
Paiboon Choungthong

Titanium alloy grade Ti-6Al-4V has been widely applied for many applications such as aircraft structural components, machine parts, and parts for medical equipments. To understand deformation behavior and microstructure evolution of the material during hot forming process is significant for achieving desired dimension and final mechanical properties of a product. In this study, stress-strain responses of the Ti-6Al-4V alloy were investigated using hot compression tests at different temperatures and strain rates. The determined flow curves of the alloy were subsequently calculated according to the constitutive models based on Cingara equation and Shafiei and Ebrahimi equation and compared with the experimental results. By this manner, influences of work hardening and dynamic recrystallization on the hot deformation behavior of material could be described. Accurate prediction of flow curves can considerably improve the forming process design.


Author(s):  
M.A. Tamarkin ◽  
◽  
E.E. Tishchenko ◽  
T.S. Sosnitskaya ◽  
A.G. Kohanyuk ◽  
...  

The article presents the results of research of the process of treatment with a multi-contact vibration impact tool - ball-rod reinforcement. Theoretical constraints are derived to calculate surface roughness, depth of strengthened layer and degree of deformation. The formula for determining the processing time is presented. Reliability of technological process of treatment with ball-rod reinforcing agent is investigated. Method of process design with due regard to its reliability is presented.


2013 ◽  
Vol 440 ◽  
pp. 188-193 ◽  
Author(s):  
Peter Monka ◽  
Sergej Hloch

The article deals with the designing and simulation of technological process. Its modelling in virtual 3D environment was realized by means of selected software Sketch Up Pro. Computer aid is one of the tools which enable to visualize workshop environment, the motion of all its objects and so to predict the behaviour of individual technical or technological equipments in the real production process. The collisions and other problems can be eliminated, so consequently the quality and production efficiency of existing manufacturing process can be improved. The article is concerned to the virtual design of gears production. There are described some aspects of this technological process, suggested technical devices and the individual steps needed for successful manufacturing start-up.


Author(s):  
Stanislav Dubrovin ◽  
Nina Sosnovskaya ◽  
Nadezhda Dobrynina

To improve the performance properties of metal surfaces, not only composite, but also multilayer electrochemical coatings based on various metals and alloys can be used. According to economic calculations, it is found that it is more profitable to use the Sn-Ni alloy as a protective and decorative coating than the Сu-Ni-Cr multilayer coating


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