Computation of End-Cutting-Edge Wear of Single-Point Cutting Tool Using Image Processing

There is a difference in machining by the cutting tool with defined geometry and undefined geometry. That is one of the reasons of implementation of hard turning into the machining process. In current manufacturing processes is hard turning many times used as a fine finish operation. It has many advantages – machining by single point cutting tool, high productivity, flexibility, ability to produce parts with complex shapes at one clamping. Very important is to solve machined surface quality. There is a possibility to use wiper geometry in hard turning process to achieve 3 – 4 times lower surface roughness values. Cutting parameters influence cutting process as well as cutting tool geometry. It is necessary to take into consideration cutting force components as well. Issue of the use of wiper geometry has been still insufficiently researched.

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What Sound Can Be Expected From a Worn Tool?

Journal of Engineering for Industry ◽

10.1115/1.3591621 ◽

1969 ◽

Vol 91 (3) ◽

pp. 525-534 ◽

Cited By ~ 34

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.

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Fault Diagnosis of a Single Point Cutting Tool using Statistical Features by Simple CART Classifier

Indian Journal of Science and Technology ◽

10.17485/ijst/2016/v9i33/101339 ◽

2016 ◽

Vol 9 (33) ◽

Author(s):

Nirmal Mangal ◽

M. Ramesh Nachiappan ◽

M. Elangovan ◽

V. Sugumaran

Keyword(s):

Fault Diagnosis ◽

Cutting Tool ◽

Single Point ◽

Statistical Features

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Vibrational Analysis of Single-Point Cutting Tool for Different Tool Material and Nose Radius Using Design of Experiment

Proceedings of International Conference on Intelligent Manufacturing and Automation - Lecture Notes in Mechanical Engineering ◽

10.1007/978-981-13-2490-1_4 ◽

2018 ◽

pp. 35-45

Author(s):

C. M. Choudhari ◽

I. A. Bhisti ◽

M. G. Choudhary ◽

A. H. Mistry

Keyword(s):

Design Of Experiment ◽

Cutting Tool ◽

Single Point ◽

Vibrational Analysis ◽

Tool Material ◽

Nose Radius

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Determination of Technological Forces in the Incremental Forming Process

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.371.133 ◽

2013 ◽

Vol 371 ◽

pp. 133-137

Author(s):

Radu Eugen Breaz ◽

Melania Tera ◽

Octavian Bologa ◽

Sever Gabriel Racz

Keyword(s):

Image Processing ◽

Theoretical Model ◽

Data Acquisition ◽

Incremental Forming ◽

Single Point ◽

Cnc Milling ◽

Forming Process ◽

Feed Drive ◽

Cnc Milling Machine

The paper presents a joint theoretical and experimental approach to determine the technological forces within the asymmetric single point incremental forming ASPIF process, based upon a theoretical model, image processing and data acquisition. The first step of this approach was to develop a theoretical model of the forces within the process, based upon the model of a mechanical feed drive of a CNC milling machine. By means of this model, relationships between the resistant torque at the motor spindle level and the technological force on the movement axis could be determined. Using an image processing method, which allowed the user to extract information within the machines operator panel and analytical relationships, the technological forces were determined. The results were compared with the measured values, obtained by means of a data acquisition system.

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The Ledge Tool: A New Cutting Tool Insert

Journal of Engineering for Industry ◽

10.1115/1.3185990 ◽

1985 ◽

Vol 107 (2) ◽

pp. 99-106 ◽

Cited By ~ 6

Author(s):

R. Komanduri ◽

M. Lee

Keyword(s):

Titanium Alloys ◽

High Speed ◽

Cutting Tool ◽

Metal Removal ◽

Face Milling ◽

Cemented Carbide ◽

Depth Of Cut ◽

Peripheral Milling ◽

Cemented Carbide Tool ◽

Edge Wear

The salient features of a simple, wear-tolerant cemented carbide tool are described. Results are presented for high-speed machining (3 to 5 times the conventional speeds) of titanium alloys in turning and face milling. This tool, termed the ledge cutting tool, has a thin (0.015 to 0.050 in.) ledge which overhangs a small distance (0.015 to 0.060 in.) equal to the depth of cut desired. Such a design permits only a limited amount of flank wear (determined by the thickness of the ledge) but continues to perform for a long period of time as a result of wear-back of the ledge. Under optimum conditions, the wear-back occurs predominantly by microchipping. Because of geometric restrictions, the ledge tool is applicable only to straight cuts in turning, facing, and boring, and to face milling and some peripheral milling. Also, the maximum depth of cut is somewhat limited by the ledge configuration. In turning, cutting time on titanium alloys can be as long as ≈ 30 min. or more, and metal removal of ≈ 60 in.3 can be achieved on a single edge. Wear-back rates in face milling are about 2 to 3 times higher than in straight turning. The higher rates are attributed here to the interrupted nature of cutting in milling. Use of a grade of cemented carbide (e.g., C1 Grade) which is too tough or has too thick a ledge for a given application leads to excessive forces which can cause gross chipping of the ledge (rapid wear) and/or excessive deflection of the cutting tool with reduced depth of cut. Selection of a proper grade of carbide (e.g., Grades C2, C3, C4) for a given application results in uniform, low wear-back caused by microchipping. Because of the end cutting edge angle (though small, ≈ 1 deg) used, the ledge tool can generate a slight taper on very long parts; hence an N.C. tool offset may be necessary to compensate for wear-back. The ledge tool is found to give excellent finish (1 to 3 μm) in both turning and face milling. In general, conventional tooling with slight modifications can be used for ledge machining. The ledge tool can also be used for machining cast iron at very high speeds.

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