scholarly journals A CHOICE OF THE OPTIMUM CUTTING RANGES FOR CUTTING NOZZLES A-SD FOR SELECTION OF METALLURGICAL MATERIAL

2018 ◽  
Vol 12 (3) ◽  
pp. 106-113
Author(s):  
Dana Stančeková ◽  
Anna Rudawska ◽  
Albert Kulla ◽  
Jana Petrů ◽  
Jozef Holubják
Keyword(s):  
Metallurgical Material ◽  
Optimum Cutting ◽  
Selection Of

Design of special tools by CAD/CAM systems

1998 ◽  
Vol 212 (5) ◽  
pp. 357-371
Author(s):  
J C Rico ◽  
S Mateos ◽  
E Cuesta ◽  
C M Suárez
Keyword(s):  
Computer Aided Design ◽  
Automatic Identification ◽  
Automatic Design ◽  
Technological Parameters ◽  
Optimum Cutting ◽  
Cad Cam ◽  
The Cost ◽  
Aided Design ◽  
Cam Systems ◽  
Selection Of

This paper presents a program for the automatic design of special tools developed under a CAD/CAM (computer aided design/manufacture) system. In particular, the special tools made with standard components have been considered. Since the design of these types of tools was essentially related to the selection of their components, this paper deals with this aspect, insisting upon the selection of those components directly related to the removal of material: the toolholders or cartridges and the inserts. To select these components it is necessary to take into account not only geometrical or technological rules but also economical ones, owing to the high amount of possible components they can select. Consideration of economical aspects required the formulation of the cost equation associated with the use of these types of tools, characterized because their cutting edges coincide with different cutting velocities. Likewise, consideration of economical aspects allows the selection of the optimum cutting conditions and the cutting components to take place at the same time. Some of the geometrical and technological parameters related to the selection of cutting components are automatically identified by the system through an automatic identification of the workpiece profile.

Numerical simulations of preliminary state of stress in bundles of metal sheets on the guillotine

2017 ◽  
Vol 85 (1) ◽  
pp. 14-23 ◽  
Author(s):  
J. Kaczmarczyk
Keyword(s):  
Numerical Simulations ◽  
Experimental Studies ◽  
Cutting Parameters ◽  
Cutting Process ◽  
Main Task ◽  
Force Loading ◽  
State Of Stress ◽  
Metal Sheets ◽  
Optimum Cutting ◽  
Selection Of

Purpose: The work is aimed at determination of the influence of selected technological parameters on the preliminary state of stress in bundles of metal sheets being compressed by the pressure beam and submitted to the cutting process on a guillotine. Design/methodology/approach: The numerical simulations concerning the preliminary state of stress in the bundle of sheets were conducted by means of the finite element method and the computer system MSC.Patran with the computational module MSC.Marc. The experimental studies concerning the influence of a force loading the pressure beam on the quality of metal sheets were carried out using scanning electron microscopy. Findings: Possibilities of finding the optimum cutting parameters to maximise the values of preliminary state of stress in the bundle of metal sheets subjected to cutting. Higher values of stresses in the bundle coming from loading the pressure beam on the one hand decrease the maximum values of cutting force and thereby facilitate the performance of the cutting process, however on the other hand too high values of stresses might damage the surface of the top sheet in a bundle. Research limitations/implications: The main task of the presented research concerns the reduction of the maximum force generated on a knife during the cutting process. It is possible by increasing the values of preliminary state of stress realized in practice by applying higher values of a force loading the pressure beam. The force should not be too high in order to avoid damaging of the top sheet in the bundle loading by the pressure beam. Practical implications: The appropriate selection of the cutting parameters on account of preliminary state of stress in the bundle of sheets is essential in terms of industrial economy. It enables reducing the amount of waste caused by defects in bundles of sheets and decreases wear of the cutting tool. The research has been conducted in order to reduce the number of randomly occurring defects during cutting of metal sheets on a guillotine. Originality/value: The results acquired from the research facilitate selection of the best parameter settings required for conducting the optimum cutting process on a guillotine. The optimum set of cutting parameters leads to the reduction of defects’ number occurring during the process.

scholarly journals Tool wear monitoring and selection of optimum cutting conditions with progressive tool wear effect and input uncertainties

2009 ◽  
Vol 22 (4) ◽  
pp. 491-504 ◽  
Author(s):  
Sukhomay Pal ◽  
P. Stephan Heyns ◽  
Burkhard H. Freyer ◽  
Nico J. Theron ◽  
Surjya K. Pal
Keyword(s):  
Tool Wear ◽  
Cutting Conditions ◽  
Tool Wear Monitoring ◽  
Optimum Cutting ◽  
Wear Monitoring ◽  
Input Uncertainties ◽  
Selection Of

scholarly journals Study on milling of super elasto-plastic β type titanium alloy (Verification of processing characteristics and selection of optimum cutting conditions)

2017 ◽  
Vol 83 (855) ◽  
pp. 17-00258-17-00258 ◽  
Author(s):  
Hideharu KATO ◽  
Kohei ITO ◽  
Akihiro KITAMURA ◽  
Noriaki IKENAGA ◽  
Kazuyuki KUBOTA
Keyword(s):  
Titanium Alloy ◽  
Cutting Conditions ◽  
Optimum Cutting ◽  
Selection Of

Maximum Profit as the Criterion in the Determination of the Optimum Cutting Conditions

1966 ◽  
Vol 88 (4) ◽  
pp. 435-442 ◽  
Author(s):  
S. M. Wu ◽  
D. S. Ermer
Keyword(s):  
Production Rate ◽  
Cutting Speed ◽  
Minimum Cost ◽  
Practical Applications ◽  
Maximum Profit ◽  
Optimum Speed ◽  
Optimum Cutting ◽  
Maximum Production Rate ◽  
Selection Of

Maximum profit is an appropriate criterion for the selection of the optimum machining conditions rather than the conventional criteria of minimum cost or maximum production rate. A simple example is presented to illustrate the determination of the maximum-profit cutting speed by application of a fundamental economic principle that maximum profit occurs at the production rate where the marginal revenue equals the marginal cost. The effects of the demand function, feed, and cost and time parameters on the determination of the maximum-profit cutting speed are analyzed. Emphasis is given to the investigation of a range of optimum cutting speeds, instead of the theoretical optimum speed, for practical applications.

Optimization of milling operations for the selection of cutting conditions using Tribes

2005 ◽  
Vol 219 (10) ◽  
pp. 761-771 ◽  
Author(s):  
G C Onwubolu
Keyword(s):  
Performance Measures ◽  
End Milling ◽  
Parameter Tuning ◽  
Optimization Criterion ◽  
Cutting Conditions ◽  
Machining Performance ◽  
Milling Operations ◽  
Optimum Cutting ◽  
Selection Of

This paper presents a new methodology involving the use of Tribes for the selection of cutting conditions in single-pass milling operations. The new methodology, which is autonomous because it does not need any parameter tuning, is based on a comprehensive optimization criterion integrating the contributing effects of all major machining performance measures for milling operations. The results of case studies previously considered using genetic algorithms are presented to demonstrate the application of this new methodology for the determination of optimum cutting conditions in face- and end-milling operations. Results obtained show that the new methodology is efficient, effective, and competitive.

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