scholarly journals Application of Multi-Contour Cutting in Algorithms for Solving the Cutting Path Problem

2021 ◽  
Vol 346 ◽  
pp. 01015
Author(s):  
Anastasiia Tavaeva ◽  
Aleksandr Petunin ◽  
Efim Polishchuk
Keyword(s):  
Sheet Metal ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Cutting Equipment ◽  
Cutting Path ◽  
Sheet Metal Cutting

The cutting path problem for CNC sheet metal cutting equipment is considered in this article. The method of multi-contour cutting application is described for solving Cutting Path Problem (CPP). The method is to be combine contours in «blocks» (groups) and cutting of several contours is performed by using special cutting techniques (common cut, «chained» cutting) in order to reduce values of cutting tool length and number of piercings compared with standard cutting technique (where only idle path is minimized) The article presents results of solving cutting path problem computing experiments using proposed method (multi-contour cutting with common cut) and algorithm CCP-Relax (in which the standard cutting technique is used). The examples of testing are performed by using several instances from Library CPPLib.

A Digital System Implement for Aircraft Sheet Metal Cutting

2011 ◽  
Vol 110-116 ◽  
pp. 1637-1642
Author(s):  
Chang Liang Lai ◽  
Chuang Liu ◽  
Xian Jie Zhang
Keyword(s):  
Path Planning ◽  
Sheet Metal ◽  
Metal Cutting ◽  
Digital System ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Cutter Path ◽  
Doubly Curved ◽  
Cutting Path ◽  
Sheet Metal Cutting

For aircraft sheet metal parts digital cutting, this paper uses IDEF0 to structure a digital system integrated with unfolding module, nesting module, cutting path planning module and NC cutting module, then analyzes data organization and process of the system application. In the system, an algorithm for the development of a doubly curved surface onto a plane is adopted, NC cutting process-oriented nesting algorithm is presented and rules of cutter path planning is developed. Furthermore, application examples of key technologies (unfolding, nesting, path cutter planning) are demonstrated and indicate that the system can realize digital cutting for aircraft sheet metal parts quickly and precisely.

Design and development of automatic sheet metal cutting machine

2020 ◽  
Author(s):  
R. Muthu Siva Bharath ◽  
Arunkumar Gopal ◽  
I. Maria James ◽  
S. Lakshmi Sankar
Keyword(s):  
Sheet Metal ◽  
Metal Cutting ◽  
Metal Cutting Machine ◽  
Design And Development ◽  
Cutting Machine ◽  
Sheet Metal Cutting

scholarly journals Impact of Core Sheet Cutting Method on Parameters of Induction Motors

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1960 ◽  
Author(s):  
Maria Dems ◽  
Krzysztof Komeza ◽  
Witold Kubiak ◽  
Jacek Szulakowski
Keyword(s):  
Sheet Metal ◽  
Metal Cutting ◽  
Induction Motors ◽  
Dominant Role ◽  
Accurate Determination ◽  
Design Stage ◽  
Average Width ◽  
Core Losses ◽  
The Impact ◽  
Sheet Metal Cutting

The method of cutting motor core sheets causes a change in their magnetic properties and core losses, especially additional losses. Reducing motor losses is very important because of the fulfillment of increasingly stringent requirements set by international regulations for reducing electricity consumption. Due to fact that more and more often induction motors are supplied with high-frequency voltage, core losses are beginning to play a dominant role in the motor’s loss balance. That is why accurate determination of these losses is very important and cutting has a significant impact on them. This report shows how the method of cutting sheet metal affects losses in the finished induction motor working in a wide frequency range. The paper presents the impact of various motor core fabrication technologies on its operational parameters and an approximate way of including this impact in analytical calculations at the design stage of new machine designs, as it is necessary to use sheet metal cutting technologies such as laser or electrical discharge machining (EDM) at the prototype stage. The proposed method is based on measurements of sheet parameters made on toroidal samples with appropriately selected dimensions, so that the width of the sample corresponds to the average width of the motor core elements.

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