Influence of bit geometry and cutting-edge wear on the design of a drilling machine with a differential link to the effector mechanisms

1975 ◽  
Vol 11 (2) ◽  
pp. 117-120
Author(s):  
V. G. Sachkov
Keyword(s):  
Cutting Edge ◽  
Drilling Machine ◽  
Edge Wear ◽  
Effector Mechanisms

Cutting edge wear in high-speed stainless steel end milling

2021 ◽  
Author(s):  
Mohammad Malekan ◽  
Camilla D. Bloch-Jensen ◽  
Maryam Alizadeh Zolbin ◽  
Klaus B. Ørskov ◽  
Henrik M. Jensen ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Speed ◽  
End Milling ◽  
Cutting Edge ◽  
Edge Wear

What Sound Can Be Expected From a Worn Tool?

1969 ◽  
Vol 91 (3) ◽  
pp. 525-534 ◽  
Author(s):  
E. J. Weller ◽  
H. M. Schrier ◽  
Bjorn Weichbrodt
Keyword(s):  
Machine Tool ◽  
Detection System ◽  
Cutting Edge ◽  
Cemented Carbide ◽  
Electronic Unit ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
Edge Wear ◽  
Sonic Detection ◽  
1045 Steel

This paper describes an electronic-mechanical system which utilizes sonic signals to detect the degree of cutting edge wear in metalworking tools and automatically trigger a cutting edge change. A packaged electronic unit reads out sonic vibrations from an instrumented machine-tool workpiece cutting-tool system to determine degree of cutting edge wear during a turning cut. At a predetermined comparative sonic ratio, the electronic unit commands stoppage of the machine tool feed, retraction of the tool and automatic index of the cemented carbide insert to the next good cutting edge. The latter function is performed by a prototype mechanical device. The paper describes the system and cites data generated during use of the sonic detection system with five grades of cemented carbide cutting AISI 1045 steel. Results under varying cutting conditions are reported. The authors speculate on the possibility of combining such a wear detection and cutting edge indexing arrangement with a computer to provide a complete system for optimum productivity and economy in a completely automatic operation.

scholarly journals Reamers cutting edge preparation for improvement the GGG 40 machining

2018 ◽  
Vol 178 ◽  
pp. 01014
Author(s):  
Ioan-Doru Voina ◽  
Stefan Sattel ◽  
Glad Contiu ◽  
Adrian Faur ◽  
Bogdan Luca
Keyword(s):  
Wear Resistance ◽  
Coating Layer ◽  
Cutting Tools ◽  
Cutting Edge ◽  
Abrasive Jet Machining ◽  
Edge Wear ◽  
Solid Carbide ◽  
Cutting Edge Preparation ◽  
Machining Strategies ◽  
Edge Preparation

The improvement of the microgeometry became a subject of a great interest in cutting tools optimization. This paper approaches the process of cutting edge preparation of solid carbide reamers. It has been analyzed the evolution of cutting edge wear resistance in the material GGG 40 using the scanning electron microscope (SEM). The work also compared the rounded cutting edge reamers realized using wet abrasive jet machining with standard unprepared cutting edge. To obtain different microgeometries were experienced a number of machining strategies, which resulted in four combinations of roundness and forms for the cutting edge. In order to validate the results, the author studied the wear resistance during the reaming tests, the influence of prepared surface of the cutting edge on metallic coating layer adhesion. The final purpose was to determinate the optimal strategy of cutting edge preparation considering the evolution of wear during the reaming process.

Secondary cutting edge wear of one-shot drill bit in drilling CFRP and its impact on hole quality

2017 ◽  
Vol 178 ◽  
pp. 341-352 ◽  
Author(s):  
Fuji Wang ◽  
Baowei Qian ◽  
Zhenyuan Jia ◽  
Rao Fu ◽  
De Cheng
Keyword(s):  
Cutting Edge ◽  
Drill Bit ◽  
Hole Quality ◽  
Edge Wear ◽  
Secondary Cutting

scholarly journals The accuracy of cutting edge wear measurement using a focus-variation microscope

Mechanik ◽  
2018 ◽  
Vol 91 (10) ◽  
pp. 850-852
Author(s):  
Jan Burek ◽  
Barbara Jamuła
Keyword(s):  
Three Dimensional ◽  
Cutting Edge ◽  
Wear Measurement ◽  
3D Geometry ◽  
Edge Wear ◽  
Focus Variation

An assessment of the accuracy of the reconstruction of cutting edges 3D geometry shank cutter depending on the magnification of the lens is presented. Focus-variation microscope Alicona G4 with IFM Alicona software were used in the research. The main goal of the research was to determine differences created in the process of the reconstruction of cutting edges geometry. Three-dimensional maps of deviation values were presented, using measurements of cutting edges geometry.

On the Influence of the Speed-Feed Interaction on the Wear Rate and Life of Multiple Coated Carbide Inserts Considering Rough Turning Process

2014 ◽  
Vol 575 ◽  
pp. 431-436 ◽  
Author(s):  
M.S. Alajmi ◽  
S.E. Oraby
Keyword(s):  
Wear Rate ◽  
Cutting Speed ◽  
Dimensional Accuracy ◽  
Cutting Edge ◽  
Depth Of Cut ◽  
Machined Surface ◽  
Edge Wear ◽  
The Impact ◽  
Rough Turning ◽  
Coated Carbide

The impact of the cutting parameters; speed, feed, and depth of cut on the wear and the life of the cutting edge has long been a matter of debate among researchers. The cutting speed has long been agreed to have a prime influence in such a way that increasing speed leads to higher wear rate. Depth of cut has been concluded by majority of studies to have insignificant or negligible impact on edge wear and deformation. Despite its long established influence on the roughness of the machined surface, the effect of cutting feed on edge wear and deformation still requires more explanation. Cutting feed is a crucial parameter governing the product surface finish and dimensional accuracy and, therefore, its attitude during machining should be fully understood. This study presents experimental and modeling approach to detect the feed-wear functional interrelation considering various domains of the cutting speed. Results showed that the impact of the cutting feed is firmly associated with the level of cutting speed employed. Speed-feed interaction proved to be responsible for the performance of the cutting edge during machining.

Determination of the Real Cutting Edge Wear Contact Area on the Tool-Workpiece Interface in the Light of Cutting Forces Variations

2013 ◽  
Vol 325-326 ◽  
pp. 1406-1411 ◽  
Author(s):  
Samy E. Oraby
Keyword(s):  
Contact Area ◽  
Cutting Forces ◽  
Cutting Edge ◽  
Wear Area ◽  
Wear Pattern ◽  
Edge Wear ◽  
Force Components ◽  
Wear Modes ◽  
Selection Of

The determination of actual stresses over the tool-workpiece interface has long been a matter of debate among researchers. Evaluation of the nature and the geometry of the wear contact area were always associated with many, sometime impractical, assumptions. The indeterministic fashion of edge wear and deformation requires a more realistic way to predict the actual wear contact area. In the current study, many wear area patterns are proposed considering the different wear modes of the cutting edge. The selection of the most correlated pattern to a specific edge deformation is justified using the relevant variations in the radial and the axial force components. For a regular wear over the entire cutting edge, a wear pattern that considers nose and/or flank is justified. When the cutting edge plastically fails, a pattern that considers only nose wear is preferred. As the cutting edge is subjected to many types of irregular disturbances of edge fracture and chipping, a wear pattern considering both flank and nose wear is selected.

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