Screw-Type Symmetry in Machine Components and Design at Implementation on a 3D Printer
Journal Title: Проблеми машинобудування - Year 2019, Vol 22, Issue 1
Abstract
The creation of mathematical models for the implementation of 3D printing is of considerable interest, which is associated with the active introduction of 3D printing in various industries. The advantages of using 3D printing are the following: the possibility of making non-standard models, reducing the time to create new prototypes, making simple and low cost products, and using modern super-strength materials. The manufacture of machine components with a screw-type symmetry occurs in various, often very complicated ways to include casting with the subsequent rotary machining, methods of hot deformation, electrophysical and electrochemical methods, etc. Their manufacture on a 3D printer can be very promising. In this paper, the R-functions theory is used for the mathematical and computer modeling of geometric objects with a screw-type symmetry for the case when 3D printing technology is to be implemented. An analytical recording of the objects being designed makes it possible to use alphabetic geometric parameters, complex superposition of functions, which, in turn, allows us to quickly change their structural elements. The working part of many mechanisms for moving a material along a helical rotating surface is a screw. Screws are used instead of wheels in some types of cross-country vehicles or combines. They are an indispensable part in extruders and boring stations. At large enterprises, they are used as a means of transporting bulk materials. Screws are indispensable in the food industry. Among other things, they are used in small arms, where they play the role magazines for cartridges. In this work, we build mathematical and computer models of the variable and constant pitch screws to be implemented on a 3D printer. In order to organize and intensify various processes in power plants and other technical devices, swirling is widely used. Swirling is an effective means of stabilizing the flame in the combustion chambers of gas turbine engines. It is also used to intensify heat and mass transfer in channels; in chemical, petroleum, gas and other industries. This paper considers mathematical and computer models of a screw swirler, locally twisted tube, and complex cross-section twisted tube intended for the implementation on a 3D printer. The process of building a desk lamp with a design in the form of elliptic twisted tori is shown as well.
Authors and Affiliations
Tatyana I. Sheyko, Kyrylo V. Maksymenko-Sheiko, Anna I. Morozova
Keywords
Related Articles
- EP ID EP622741
- DOI 10.15407/pmach2019.01.060
- Views 58
- Downloads 0
Use of Computer Technology in Modernization of Head Covers for ПЛ 20-В-500 Kaplan Turbines
<p class="a">One of the problems faced by a designer in the modernization of operating generating units is the analysis of the feasibility of ensuring the strength and reliability of turbine parts and components in their...
Roller Forming Unit Dynamic Analysis with Energy Balanced Drive Dissipative Properties Taken into Account
In order to increase the reliability and durability of a roller forming unit with an energy-balanced drive, loads in the unit structure elements and drive are calculated, dependencies for identifying efforts in the conne...
Major Stress-Strain State of Double Support Multilayer Beams Under Concentrated Load. Part 2. Model Implementation and Calculation Results
The development of composite technologies contributes to their wide introduction into the practice of designing modern different-purpose structures. Reliable prediction of the stress-strain state of composite elements is...
Aeroelastic Behaviour of Turbine Blade Row in 3D Viscous Flow
This paper presents the results of a numerical analysis of the aeroelastic behaviour of the oscillating blade row of a turbine stage in the 3D flow of viscous gas, taking into account the non-uniform pressure distributio...
Numerical analysis of stress-strain state of vertical cylindrical oil tanks with dents
The destruction of vertical cylindrical tanks results in both human and economic losses. Despite constant improvement of the manufacturing technology of cylindrical tanks, a complete analysis of the influence of various...