Optimal CNC Plunger Selection and Toolpoint Generation for Roughing Sculptured Surfaces Cavity

2006 ◽  
Vol 128 (4) ◽  
pp. 1025-1029 ◽  
Author(s):  
Tawfik T. El-Midany ◽  
Ahmed Elkeran ◽  
Hamdy Tawfik
Keyword(s):  
Research Work ◽  
New Method ◽  
Path Generation ◽  
Sculptured Surfaces ◽  
Rough Machining ◽  
Plunge Milling ◽  
Machining Time ◽  
Selection Of

Plunge milling is among the most effective methods of deep core/cavity shaped rough machining techniques. Previous research work had not considered the optimization of plunger selection and toolpoint path. In this paper a new method is proposed (overlapped circles filling (Ocfill)) for optimizing the selection of plungers and toolpoint path generation. The proposed method is used to fill 2D area with a number of overlapped circles. The 2D area is expressed as the feature that being cutting with plunge milling and the circles are plunging holes. The Ocfill method has been implemented in Visual C++. The Ocfill is applied to many examples. The results show that, Ocfill saves rough machining time by significant value up to 28%. This value depends on the shape and complexity of the workpiece that is being cut.

A novel tool-path generation method for five-axis flank machining of centrifugal impeller with arbitrary surface blades

2016 ◽  
Vol 231 (1) ◽  
pp. 155-166 ◽  
Author(s):  
Hong-Zhou Fan ◽  
Shang-Jin Wang ◽  
Guang Xi ◽  
Yan-Long Cao
Keyword(s):  
Tool Path ◽  
Tool Path Generation ◽  
Ruled Surface ◽  
Centrifugal Impeller ◽  
Flank Milling ◽  
Path Generation ◽  
Rough Machining ◽  
Machining Time ◽  
Geometrical Structures ◽  
Five Axis

The centrifugal impeller with arbitrary surface blades is a very important component in automobile, ships, and aircraft industry, and it is one of the most difficult parts to process. Focusing on the machining efficiency improvement, combining the geometric advantages of ruled surface and arbitrary surface, and utilizing the efficient and accurate advantages of flank machining and point machining, this article presents a novel and targeted tool-path generation method and algorithm for five-axis flank machining of centrifugal impeller with arbitrary surface blades. In light of specific characters of different surfaces, the analyses of two different impeller blades are proposed first, the more characteristic and complex geometrical structures of the arbitrary blade are achieved. In rough machining, an approximate ruled surface blade is obtained, and a simple channel is achieved; the flank milling of the centrifugal impeller with ruled surface blades is achieved relative to the point milling of the centrifugal impeller with arbitrary surface blades; and the triangle tool path planning method is added in this process to save the machining time and cost collectively. Furthermore, in semi-finish machining, the approximate sub-ruled blade surfaces are calculated, and a new flank milling method of the sub-ruled blade surfaces is achieved; a new solution for tool interference is achieved in this process and the generation of non-interference tool paths becomes easy. Machining experiments of two different impellers are presented as a test of the proposed methods.

Dynamic In-Process Stock Based Tool Path Generation for High Surface Finish Rough Machining

2013 ◽  
Vol 567 ◽  
pp. 59-65
Author(s):  
Song Lin Ding ◽  
John P.T. Mo ◽  
Daniel Yang
Keyword(s):  
Surface Finish ◽  
Process Model ◽  
Tool Path ◽  
High Surface ◽  
Tool Path Generation ◽  
Path Generation ◽  
Rough Machining ◽  
Machining Time ◽  
Additional Tool ◽  
Tool Paths

This paper presents a new tool path generation strategy for rough machining based on the dynamic in-process stock model of the workpiece. Compared to conventional roughing method, the new tool paths result in a better surface finish but consume the same machining time. The cutter locations in the tool path are determined by removing the peak portion of the residual materials on the stock. The geometric information of remaining stocks is updated dynamically in the in-process model once each cutting pass is completed. The overall machining time is no longer than the conventional method since no additional tool paths are added. The proposed method was implemented in Catia and has been validated by simulation and cutting tests with flat end and ball nose cutters on a 3-axis CNC milling machine.

Integrated FAHP-VIKOR model for green supplier selection in a Nickle coating SME

2020 ◽  
pp. 133-139
Author(s):  
Sanatan Ratna ◽  
B Kumar
Keyword(s):  
Staff Training ◽  
Supplier Selection ◽  
Fuzzy Ahp ◽  
Research Work ◽  
Supplier Evaluation ◽  
Green Supplier Selection ◽  
The Past ◽  
Coating Industry ◽  
Sustainability Issue ◽  
Selection Of

In the past few decades, there has been lot of focus on the issue of sustainability. This has occurred due to the growing concerns related to climate change and the growing awareness about environmental concerns. Also, the competition at global level has led to the search for the most sustainable route in the industries. The current research work deals with the selection of green supplier in a Nickle coating industry based on certain weighted green attributes. For this purpose, a hybrid tool comprising of Fuzzy AHP (Fuzzy Analytical Hierarchy) and VIKOR (VlseKriterijumska Optimizacija I Kompromisno Resenje) is used. The Fuzzy AHP is used for assigning proper weights to the selected criteria for supplier evaluation, while VIKOR is used for final supplier selection based on the weighted criteria. The three criterions for green supplier selection are, Ecological packaging, Corporate socio-environmental responsibility and Staff Training. The outcome of the integrated model may serve as a steppingstone to other SMEs in different sectors for selecting the most suitable supplier for addressing the sustainability issue.

scholarly journals Construction of new solitary wave solutions of generalized Zakharov-Kuznetsov-Benjamin-Bona-Mahony and simplified modified form of Camassa-Holm equations

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 896-909 ◽  
Author(s):  
Dianchen Lu ◽  
Aly R. Seadawy ◽  
Mujahid Iqbal
Keyword(s):  
Solitary Wave ◽  
Nonlinear Partial Differential Equations ◽  
Research Work ◽  
Traveling Wave Solutions ◽  
Elliptic Functions ◽  
Mapping Method ◽  
New Method ◽  
Auxiliary Equation ◽  
Solitary Wave Solutions ◽  
Wave Solutions

AbstractIn this research work, for the first time we introduced and described the new method, which is modified extended auxiliary equation mapping method. We investigated the new exact traveling and families of solitary wave solutions of two well-known nonlinear evaluation equations, which are generalized Zakharov-Kuznetsov-Benjamin-Bona-Mahony and simplified modified forms of Camassa-Holm equations. We used a new technique and we successfully obtained the new families of solitary wave solutions. As a result, these new solutions are obtained in the form of elliptic functions, trigonometric functions, kink and antikink solitons, bright and dark solitons, periodic solitary wave and traveling wave solutions. These new solutions show the power and fruitfulness of this new method. We can solve other nonlinear partial differential equations with the use of this method.

A New Method for Selecting the Best Design

2012 ◽  
Vol 20 (1) ◽  
pp. 11-17
Author(s):  
Mark E. Benden ◽  
Kristen Miller ◽  
Eric Wilke ◽  
Eduardo Ibarra
Keyword(s):  
Patient Outcomes ◽  
New Method ◽  
Driver Safety ◽  
Transport Vehicle ◽  
Medical Transport ◽  
Expert Ratings ◽  
Vehicle Seat ◽  
Improve Patient ◽  
Individual Expert ◽  
Selection Of

In this article the authors illustrate how individual expert ratings can be employed to prioritize specifications for use in forced rankings. Those rankings are then used to select a design with the best overall usability. The authors provide an example of this approach in the selection of a medical transport vehicle seat to produce a more ergonomic product that could improve patient outcomes and driver safety.

On-line selection of rough machining parameters

2004 ◽  
Vol 149 (1-3) ◽  
pp. 256-262 ◽  
Author(s):  
Joško Valentinčič ◽  
Mihael Junkar
Keyword(s):  
Machining Parameters ◽  
Rough Machining ◽  
On Line ◽  
Line Selection ◽  
Selection Of

SELECTION OF CONTROLLABLE PARAMETERS OF THE BINARY DATA ARRAY DETECTION ALGORITHM IN THE INTEGRATED MANAGEMENT SYSTEM

2021 ◽  
Vol 4 (3) ◽  
pp. 11-18
Author(s):  
Khakimjon Zaynidinov ◽  
◽  
Odilbek Askaraliyev
Keyword(s):  
Management System ◽  
Binary Data ◽  
Integrated Management ◽  
Research Work ◽  
Hash Functions ◽  
Experimental Tests ◽  
Detection Algorithm ◽  
Identification Algorithm ◽  
Solution Algorithms ◽  
Selection Of

The article discusses the selection of parameters for the algorithm for determining binary data arrays included in the control system, developed by the authors using independent substitution methods. Based on the analysis of the algorithms of non-cryptographic hash functions, the hash function based on the linear matching method was selected as the basis for independent substitution methods. Simplified schemes of algorithms developed for creating and comparing identifiers using a set of basic hash functions are given. An array of binary data was selected and based on the appropriate values for the size of the divisible blocks and the number of basic hashfunctions used for independent substitutions. The selection of binary data arrays in information systems integrated into the management system was done for the purpose of intellectual processing of incoming data. The properties of the array of data entering integrated systems are studied. The authors conducted experimental tests in the selected direction and presented the results of similarity assessment measurements for various parameters of the identification algorithm. In addition, the article conductedexperiments on the object of study using the selected mathematical model, based on the analytical conclusions. Initiator elements are studied and analyzed using a set of hash functions. An algorithm for comparison of selected identifiers has been developed. A generation algorithm has been developed to demonstrate and test the proposed solution. Algorithms based on analysis and experiments, and methods for selecting binary data arrays using the ash function have been experimentally tested. Based on the results, the indicators are shown. Based on the results obtained, the analytical conclusions and problem solutions of the research work were recognized

Optimal Rough Machining of Sculptured Parts on a CNC Milling Machine

1993 ◽  
Vol 115 (4) ◽  
pp. 424-431 ◽  
Author(s):  
Z. Dong ◽  
H. Li ◽  
G. W. Vickers
Keyword(s):  
Production Costs ◽  
Depth Of Cut ◽  
Cnc Milling ◽  
Rough Machining ◽  
Machining Time ◽  
Tool Paths ◽  
Cnc Milling Machine ◽  
Cnc Programming ◽  
Sculptured Parts ◽  
Optimal Approach

An optimal approach to the rough machining of sculptured parts with least machining time is presented. The contour map cutting method is used to generate CNC tool paths based on the CAD model of sculptured parts. The part and stock geometry related parameters, including the number of cutting layers and the distributions of cutting depth, and the process parameters of feed rate and depth of cut, are optimized. The method can automate CNC programming for sculptured part rough machining, considerably improve productivity, and lower production costs. Two examples are used to illustrate the approach and its advantages.

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