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 Abrasive Life in Ultrasonic Machining

1985 ◽  
Vol 107 (4) ◽  
pp. 361-364 ◽  
Author(s):  
S. W. Dharmadhikari ◽  
C. S. Sharma
Keyword(s):  
Production Rate ◽  
Minimum Cost ◽  
Work Conditions ◽  
Ultrasonic Machining ◽  
Objective Functions ◽  
Profit Rate ◽  
Rate Functions ◽  
Sensitivity Studies ◽  
Maximum Production Rate

Based on two models of material removal in ultrasonic machining, developed in an earlier work, conditions for optimum abrasive life for the objective functions of minimum cost per unit volume of material removed, maximum production rate and maximum profit rate are presented. A simple nomogram is designed for the determination of optimum abrasive life. Sensitivity studies of production rate and profit rate functions are presented. An illustrative example highlights the application of the analysis.

Optimization of Cutting Parameters in Machining

2012 ◽  
Vol 549 ◽  
pp. 871-874
Author(s):  
Yu Hui Liu
Keyword(s):  
Mathematical Model ◽  
Cutting Speed ◽  
Minimum Cost ◽  
Cutting Parameters ◽  
Maximum Productivity ◽  
Maximum Profit ◽  
Optimization Of Cutting Parameters ◽  
Selection Of

The paper analyzes the reasonable selection of cutting parameters and states the relations among maximum profit-oriented cutting speed, minimum cost-oriented cutting speed and maximum productivity-oriented cutting speed. It establishes a mathematical model for the optimization of cutting parameters in machining.

Study on the Method for the Optimization of Cutting Parameters

2006 ◽  
Vol 532-533 ◽  
pp. 325-328
Author(s):  
Jing Ying Zhang ◽  
Si Qin Pang ◽  
Qi Xun Yu
Keyword(s):  
Production Rate ◽  
Production Cost ◽  
Cutting Parameters ◽  
Computational Method ◽  
Profit Rate ◽  
Maximum Profit ◽  
Rate Minimum ◽  
Maximum Production Rate ◽  
Optimization Of Cutting Parameters ◽  
Very High

This article discusses the problem about the method for the optimization of cutting parameters. A newly developed computational method which is different from the former was used for the optimization of cutting parameters. This method has its advantages of the controllability of the precision and higher speed when the precision requirement of the system is not very high. It can optimize cutting parameters toward the objectives of maximum production rate, minimum production cost and maximum profit rate.

scholarly journals INVESTIGASI VARIASI KECEPATAN POTONG OPTIMAL PADA PROSES PEMESINAN BAJA AISI 4140

POROS ◽  
2018 ◽  
Vol 16 (1) ◽  
Author(s):  
Sobron Yamin Lubis
Keyword(s):  
Cutting Tools ◽  
Cutting Speed ◽  
Machining Process ◽  
Aisi 4140 Steel ◽  
Maximum Production ◽  
Aisi 4140 ◽  
Optimum Cutting ◽  
Production Quantity ◽  
The Cost

Determination of optimum cutting speed in the lathe process should be considered in order to produce minimal machining costs and maximum production. Research The determination of optimum cutting speed was done to investigate the effect of cutting speed when cutting AISI 4140 steel against cost and production obtained. This study was conducted experimentally using lathe and theoretical calculations to determine machining costs and the amount of production produced. The lathe process is carried out using carbide cutting tools for cutting of AISI 4140 steel metal. In this machining the data obtained is the cutting time of the machining process tail loading process then the data is incorporated into the equation together with the cutting force, the cost of the cutting tools, the workpiece, the cost labourers. Then from the calculation results obtained by graph machining cost and production amount. Based on the graph, it is observed minimal machining cost and maximum production amount to know the optimum cutting point. The results obtained .The increase in cutting rate gives effect to the increase of production quantity, while for calculation of machining cost has decreased. Machining time has a significant effect on the change of production quantity and machining cost. The optimal cutting speed (Vcopt) is 269 m / min.

Analytical Sensitivity Studies of the Optimum Machining Conditions for Milling, Drilling, Reaming, and Tapping

1973 ◽  
Vol 95 (1) ◽  
pp. 312-316 ◽  
Author(s):  
D. S. Ermer ◽  
B. V. Shah
Keyword(s):  
Analytical Method ◽  
Single Point ◽  
Minimum Cost ◽  
Sensitivity Analyses ◽  
Analytical Sensitivity ◽  
Turning Process ◽  
Machining Conditions ◽  
Sensitivity Studies ◽  
Maximum Production Rate

An analytical method for sensitivity studies in the determination of the optimum machining conditions for the single point turning process was previously presented by Ermer and Faria [4]. In the present paper, an analytical method for sensitivity studies in the determination of the optimum machining conditions for milling, drilling, reaming and tapping is presented, assuming that the optimizing criterion is minimum cost or maximum production rate. A nomogram is given which provides a simple and efficient way to carry out quantitative sensitivity analyses.

Computerized Determination and Analysis of Cost and Production Rates for Machining Operations. Part 1—Turning

1968 ◽  
Vol 90 (3) ◽  
pp. 455-466 ◽  
Author(s):  
M. Field ◽  
N. Zlatin ◽  
R. Williams ◽  
M. Kronenberg
Keyword(s):  
Machine Tool ◽  
Production Rate ◽  
Tool Life ◽  
Mathematical Expression ◽  
Minimum Cost ◽  
Rate Equations ◽  
Production Rates ◽  
Life Data ◽  
Maximum Production Rate ◽  
The Cost

Two of the most important factors in any machining operation are the cost per piece and the production rate. Equations have been developed which enable one to calculate these two factors for a given machining operation on a given part and machine tool. Generalized equations for cost and production rate are presented for turning, milling, drilling, reaming, and tapping. The items which make up the cost and production rate can be readily evaluated in each of the equations. The generalized cost per piece and production-rate equations for turning are then expanded to cover brazed and throwaway carbide tools and solid HSS tools. In order to use these equations, it is necessary to have available pertinent tool-life data for each of the tools under the actual machining conditions. Typical tool-life data have been generated and are shown here for a variety of alloys. All of the aforementioned equations have been programmed on a computer so that the cost and production rates can be readily calculated for specific parts, operations, and machine-tool combinations. The computer will print out not only the cost and production rate but also a detailed cost breakdown. A visual examination of each of the cost and production-rate factors makes possible a rapid analysis of the significance of each of the items making up the total cost and production rates. In addition, the cost and production-rate equations for turning have also been optimized. Thus calculations can be made to determine the minimum cost per piece and the maximum production rate for the cases where a mathematical expression, such as the Taylor equation, can be applied relating tool life and cutting speeds. Any projection beyond experimental data would have to be verified to serve as a guide for shop use.

Economics of Multitool Lathe Operations

1963 ◽  
Vol 85 (4) ◽  
pp. 402-404 ◽  
Author(s):  
E. M. McCullough
Keyword(s):  
Production Rate ◽  
Tool Life ◽  
Cycle Time ◽  
Minimum Cost ◽  
Spindle Speed ◽  
Maximum Production ◽  
Maximum Production Rate

The formulas for calculation of tool life for maximum production rate and tool life for minimum cost are expanded to include multitool operations and cases in which the total cycle time controlled by the spindle speed is greater than the cutting time. A modification is made to avoid use of conventional overhead rates, which are shown to be invalid in this instance.

scholarly journals Determination of Cutting Parameters for Peripheral End Milling using Discrete Handbook Data

1970 ◽  
Vol 37 ◽  
pp. 40-46
Author(s):  
Abdullahil Azeem
Keyword(s):  
Feed Rate ◽  
End Milling ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Computer Aided Process Planning ◽  
Practical Applications ◽  
Intermediate Data ◽  
Data Points ◽  
Composite Curve

Cutting speed and feed rate are the two main factors in determining cutting conditions in computer aided process planning, which are directly related to the tool life, machining cost and surface quality. There are experimental data available in the Handbook as the recommendations for academic study and practical applications. But the trends to characterize the data within the entire range and the determination of the intermediate data lying between the known data points are usually not clearly presented in such resources. This research focuses on building a "Composite Constrained Fitting Model" to determine the trends of the experimental cutting speed and feed data and thereby to obtain the intermediate data points. The model fits a composite curve through all the different curve segments, maintaining their boundary conditions and constraints on the coefficients to make its trend have valid physical interpretations.Keywords: Cutting speed, Feed rate, Fitting modeldoi:10.3329/jme.v37i0.818Journal of Mechanical Engineering Vol.37 June 2007, pp.40-46

The Effect of Experimental Error on the Determination of the Optimum Metal-Cutting Conditions

1967 ◽  
Vol 89 (2) ◽  
pp. 315-322 ◽  
Author(s):  
D. S. Ermer ◽  
S. M. Wu
Keyword(s):  
Tool Life ◽  
Experimental Error ◽  
Metal Cutting ◽  
Cutting Speed ◽  
Minimum Cost ◽  
Minimax Principle ◽  
Life Testing ◽  
Cost Cutting ◽  
The Cost

The effect of experimental error in tool life testing on the determination of the minimum cost cutting speed (Vmin) is investigated by using the concept of statistical inference. It is shown that Vmin is not uniquely defined but lies within a probable interval of cutting speeds, and that this interval is affected by the cost and time parameters and the experimental range of feed in tool life testing. The selection of a specific speed from the Vmin confidence interval is illustrated by a decision rule based on the minimax principle.

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.

Sign in / Sign up

Export Citation Format

Share Document