Closure to “Discussion of ‘Cutting Rate-Tool Life Characteristic Functions for Material Removal Processes—Parts 1 and 2’” (1976, ASME J. Eng. Ind., 98, p. 495)

1976 ◽  
Vol 98 (2) ◽  
pp. 496-496
Author(s):  
M. Y. Friedman ◽  
V. A. Tipnis
Keyword(s):  
Tool Life ◽  
Material Removal ◽  
Characteristic Functions ◽  
Cutting Rate ◽  
Removal Processes

Cutting Rate-Tool Life Characteristic Functions for Material Removal Processes—Part 1: Theory

1976 ◽  
Vol 98 (2) ◽  
pp. 481-486 ◽  
Author(s):  
M. Y. Friedman ◽  
V. A. Tipnis
Keyword(s):  
Tool Life ◽  
Material Removal ◽  
Characteristic Curve ◽  
Geometric Interpretation ◽  
Characteristic Functions ◽  
Economic Optimization ◽  
Profit Rate ◽  
Comprehensive Development ◽  
Cutting Rate ◽  
Removal Processes

The existence of cutting rate-tool life (R-T) characteristic functions for material removal operations is introduced in this paper. This new concept enables a comprehensive development of a theory for economic optimization encompassing commonly used criteria of cost, production rate, and profit rate in machining when more than one cutting variable is involved. The theory provides conditions for the existence of economic optima, all of which must lie on the R-T characteristic curve for a given operation. The analysis of the theory is carried out for one and two independent cutting variables. For these two cases, it is proven that the locus of the tangent points of constant cutting rate and constant tool life curves describes the R-T characteristic curve, and also that the tool life is maximum along a given constant cutting rate curve at the point of tangency and vice versa. This geometric interpretation provides useful application of the concept as shown in Part 2.

Cutting Rate-Tool Life Characteristic Functions for Material Removal Processes—Part 2: Verification and Applications

1976 ◽  
Vol 98 (2) ◽  
pp. 487-495 ◽  
Author(s):  
V. A. Tipnis ◽  
M. Y. Friedman
Keyword(s):  
Tool Life ◽  
Material Removal ◽  
The Other ◽  
Characteristic Functions ◽  
Designed Experiments ◽  
Cutting Rate ◽  
Removal Processes ◽  
T Domain ◽  
Economic Selection ◽  
Selection Of

The experimental verification, interpretations, and applications of the concept of cutting rate-tool life (R-T) characteristic functions are presented in this paper. Two statistically designed experiments, one on sawing and the other on milling, verifying the concept are described. The analytical and geometrical interpretations of the concept, including the existence of optima in the R-T domain, are presented. The applications discussed include economic selection of machining conditions, economic tool life determinations, comparison of machining response, objective function for adaptive control, and maximization of material removal at a desired level of surface integrity. The concept can be applied to other machining responses of conventional as well as nontraditional material removal processes.

scholarly journals A molecular dynamics based digital twin for ultrafast laser material removal processes

2020 ◽  
Vol 108 (1-2) ◽  
pp. 413-426 ◽  
Author(s):  
Panagiotis Stavropoulos ◽  
Alexios Papacharalampopoulos ◽  
Lydia Athanasopoulou
Keyword(s):  
Molecular Dynamics ◽  
Material Removal ◽  
Ultrafast Laser ◽  
Laser Material ◽  
Digital Twin ◽  
Removal Processes

scholarly journals Improvement of Machining Processes: A Case Study

2019 ◽  
Vol 2 (3) ◽  
pp. 634-641
Author(s):  
Hakan Gökçe ◽  
Ramazan Yeşilay ◽  
Necati Uçak ◽  
Ali Teke ◽  
Adem Çiçek
Keyword(s):  
Material Removal ◽  
Current Practice ◽  
Complex Geometry ◽  
Vital Role ◽  
Machining Process ◽  
Machining Processes ◽  
Machining Time ◽  
Machining Strategy ◽  
Removal Processes

In material removal processes, determination of optimal machining strategy is a key factor to increase productivity. This situation is gaining more importance when machining components with complex geometry. The current practice in the determination of machining strategy mostly depends on the experience of the machine operator. However, poorly designed machining processes lead to time-consuming and costly solutions. Therefore, the improvement of machining processes plays a vital role in terms of machining costs. In this study, the machining process of a boom-body connector (GGG40) of a backhoe loader was improved. Improvements of toolpaths and cutting conditions of 22 different material removal processes were checked through a CAM software. According to the simulation results, the process plan was rearranged. Besides, some enhancements in casting model were conducted to decrease in the number of machining operations. When compared to current practice, a reduction of 55% in machining time was achieved.

scholarly journals Temperature sensor based on fiber optic pyrometer in material removal processes

2012 ◽  
Author(s):  
A. Tapetado ◽  
C. Vázquez ◽  
X. Soldani ◽  
H. Miguélez ◽  
D. S. Montero
Keyword(s):  
Temperature Sensor ◽  
Material Removal ◽  
Fiber Optic ◽  
Removal Processes

Effect of Cooling Techniques on Temperature Control and Cutting Rate for High-Speed Dental Drills

1978 ◽  
Vol 57 (5-6) ◽  
pp. 675-684 ◽  
Author(s):  
B.A. Lloyd ◽  
J.A. Rich ◽  
W.S. Brown
Keyword(s):  
Temperature Control ◽  
Material Removal ◽  
High Speed ◽  
Water Spray ◽  
Water Stream ◽  
Air Stream ◽  
Cutting Rate ◽  
Made In

This paper describes a series of tests conducted to determine the effectiveness of various cooling techniques used while preparing teeth for restoration. Comparisons are presented for four cooling techniques: air stream, air-water spray, water stream from a separate hand-held syringe, and water applied through a hollow bur. The comparisons were made in two ways, temperature control and influence on cutting rate. It was demonstrated that wet cooling techniques provided better temperature control than cooling with air and also improved the rate of material removal.

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