Researches on evaluation of smooth entrance in cutting using electrical current. A case study

Chivu, Catrina; Oancea, Gheorghe; Daicu, Raluca

doi:10.1051/matecconf/20179402005

Cited by 6 publications

(6 citation statements)

References 5 publications

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“…The authors demonstrated, in a previous research [9], at drilling process, a connection between the electrical current at cutting and the quality of the cutting edges, by microscopically examination of the drills edges and identifying causes of the high electrical current voltage, and led to the conclusion that the electrical current is sensible to any imperfection of the drill edge. Based on this research, the authors developed, in research [10], a methodology for drills acquisition, where two drill batches from two different suppliers were compared from qualitative and economical point of view.…”

Section: Introductionmentioning

confidence: 93%

A case study about acquisition of mechanically fixed cutting inserts

2017

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Abstract. During the process of turning metals there are used cutting inserts that can be acquisitioned from different producers. Because the offer is varied the acquisition must be made after an economical analysis that includes experimental tries. The paper presents an acquisition methodology for metallic carbide cutting inserts and presents a case study. This research was developed using three batches of cutting inserts acquisitioned from different producers. The specimen material was 1C45 and using the electrical current at cutting, the batches were analysed from qualitative and economical point of view.

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Section: Introductionmentioning

confidence: 93%

A case study about acquisition of mechanically fixed cutting inserts

2017

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“…The previous researches developed by the authors demonstrate a connection between the electrical current at cutting and the quality of the cutting edges, by microscopically examination of the drills edges and identifying causes of the high electrical current voltage [1]. The conclusion was that the electrical current is sensible to any imperfection of the drill edge.…”

Section: Introductionmentioning

confidence: 96%

“…An approach of the outlined issue is presented in other researches [1], where it was used the electrical current at cutting to analyse the quality of drills. Previous researches [2][3][4][5][6][7][8][9][10][11] conducted to the fact that the state of a cutting edge can be appreciated by the value of cutting electrical current voltage, because the higher this value is, the higher the initial temperature is.…”

Section: Introductionmentioning

confidence: 99%

Innovative approach of drills acquisition using electrical current. A case study

2017

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Abstract. During the process of drilling metals there are used cutting tools that can be acquisitioned directly from the producers, from distributors or from supermarkets. Because the offer is varied and there are different producers, the acquisition must be made after an economical analysis that includes experimental tests. The paper presents an innovative methodology of drills acquisition based on electrical current at cutting process. The researches were developed using HS 6-5-2 steel drills of 8 mm diameter, in two batches, acquisitioned from two different suppliers, at different prices. The drills were tested on 1C45 material using the same values for cutting parameters and because the electrical current at cutting is sensible to any imperfection of the tools, the batches were analysed from qualitative and economical point of view.

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“…The paper [5] presents a way to increase the durability of the drill by entering it smoothly into the cutting and analyzing the effectiveness of the method using the electrical current obtained from drilling 41MoC11 steel (breaking strength -950 N/mm 2 ) with a speed steel drill. 30 drills with a diameter of Ø8 mm, made of high-speed steel, were acquired.…”

Section: Introductionmentioning

confidence: 99%

“…1. Installation for measuring the electrical current at drilling with smooth entrance in cutting [5] Processing was performed with vc = 14.07 m/min and f = 0.25 mm/rev [5]. At the same time, the axial force at the drilling required to adjust the smooth entrance device was calculated Fx = 2560 N [5].…”

Section: Introductionmentioning

confidence: 99%

Peculiarities Regarding the Smooth Entrance of the Drill in Cutting When Processing Steel

2020

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Metal drilling is one of the most common methods of obtaining cylindrical bores. At the same time, the drill is the cutting tool that cuts in the most difficult conditions and consequently any measure that leads to the improvement of the cutting process is useful. The smooth entrance in the cutting is a way to increase the durability of the drill and consequently specific devices have been developed. One of these devices is shown in this paper and previous research shows the effectiveness of its use in drilling. The analysis of the device shows that it is used for cutting 41MoC11 and C45 steels with high speed steel drills, which are in a small range of sizes. The active element of the device is identified, a helical spring working for compression, and by calculating the respective axial force of the torque, is determined exactly the range of diameters of the drills that can cut effectively. At the same time is analyzed the way of enlarging the range of drills used with the device for smooth entrance in cutting, by introducing a second spring, concentric with the first, and which works simultaneously with it, thus the device was reengineered.

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Researches on evaluation of smooth entrance in cutting using electrical current. A case study

Cited by 6 publications

References 5 publications

A case study about acquisition of mechanically fixed cutting inserts

A case study about acquisition of mechanically fixed cutting inserts

Innovative approach of drills acquisition using electrical current. A case study

Peculiarities Regarding the Smooth Entrance of the Drill in Cutting When Processing Steel

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