Morphology evolution and micro-mechanism of chip formation during high-speed machining

Fu, Xiuli; Wenxing, Lin; Pan, Yongzhi; Liu, Wentao

doi:10.1007/s00170-017-0411-1

Cited by 15 publications

(8 citation statements)

References 22 publications

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“…1 and 2 letters a and bmax indicate the slice thickness and maximum width respectively. They are fundamentally different from the analogous parameters in traditional machining [6,8]. Fig.…”

Section: Description Of Theoretical and Experimental Studiesmentioning

confidence: 85%

Research of High-Speed Machining With Disk Cutters

et al. 2019

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At present, both preliminary and final HSM is recommended to be carried out according to the scheme of cut-down milling. Processing of reinforced and unreinforced polymers is also recommended to be carried out at cut-down travel. The main problem associated with cutdown milling is caused with insufficient dynamic stiffness or the presence of backlash in the feeder table. The proposed concept of machining allows eliminating fundamentally the influence of dynamic stiffness and the presence of backlash in the table feeding mechanism on the quality of machining with GUS makes it possible while retaining the advantages of cutdown milling. Some kinematic schemes for high-speed machining by milling and turnmilling are given in the paper. The schemes for forming geometrical roughness components in such machining and calculation formulas are presented. The results of experimental studies of roughness formation with disc cutters made of fiberglass composite material in high-speed machining are presented. The results obtained are compared with the calculated data.

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“…1 and 2 letters a and bmax indicate the slice thickness and maximum width respectively. They are fundamentally different from the analogous parameters in traditional machining [6,8]. Fig.…”

Section: Description Of Theoretical and Experimental Studiesmentioning

confidence: 85%

Research of High-Speed Machining With Disk Cutters

et al. 2019

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“…Based on the past studies [25,28], it is evident that chip morphology transforms prominently with the changing of machining conditions, i.e. chip formation mechanism differs under different machining conditions like thermophysical property of the workpiece, machining parameters, lubrication environment.…”

Section: Chip Morphologymentioning

confidence: 99%

An Improvised Method of Machinability Evaluation with Predictive Temperature Model for Inconel 625: A Holistic Machinist’s Perspective

Singh¹,

Padhy²

2021

IJAME

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Machinability of any material is defined as how easily it can be machined (cut) and the factors that govern this machinability comprise machining temperature, tool wear, surface roughness, and the shape of the chip. To enhance the machinability of materials, the improvement of these governing factors is a must. In this regards machinability of Nickel alloys is of great concern as they are associated with problems of high heat generation causing tool wear and poor surface finishing, which adds to the product cost. Therefore, this research aims to improve the machinability of Inconel 625 with the use of MQL assisted with h-BN nano cutting fluid. A comparative study of machining performance of h-BN NMQL with dry and MQL conventional conditions is performed. The outcomes of this study establish the superiority of h-BN over dry machining and MQL conventional machining on various machining parameters by reducing both machining temperature and tool wear. The experimental results revealed that the machining with nano h-BN MQL technique reduces the machining tool tip temperature by 25% and 12%, along with the reduction in tool wear by 67% and 47% in comparison with dry and MQL machining. Additionally, this paper also proposes a numerical model for predicting machining tool temperature using machining parameters (speed, feed and depth of cut) during turning of Inconel 625 under nano h-BN MQL technique.

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“…High-speed machining has been attracting considerable interest as it offers higher productivity and lower manufacturing costs with acceptable surface quality [ 1 ]. A number of studies have noted the advantages of high-speed machining, including lower cutting force required and less vibration [ 2 ], decreased cross sectional area of chips due to higher cutting speeds (v c ) [ 3 ], and better chip evacuation [ 4 ]. Thus, it has definite benefits when machining difficult-to-cut materials.…”

Section: Introductionmentioning

confidence: 99%

Fundamental Investigation into Tool Wear and Surface Quality in High-Speed Machining of Ti6Al4V Alloy

et al. 2021

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This paper reports a fundamental investigation consisting of systematic trials into the response of Ti6Al4V alloy to high-speed machining using carbide inserts. It is a useful extension to work previously published, and aims at assessing the impact of the process parameters, depth of cut, cutting speed and feed rate in addition to cutting length, and their interrelations, on observed crater and flank wear and roughness of the machined surface. The results showed that abrasion was the most important flank wear mechanism at high speed. It also showed that increased cutting length accelerated crater wear more than exhibited flank wear and had considerable effect on surface roughness. In particular, crater wear increased by over 150% (on average), and flank wear increased by 40% (on average) when increasing cutting length from 40 to 120 mm. However, cutting the same length increased surface roughness by 50%, which helps explain how progression of tool wear leads to deteriorated surface quality. ANOVA was used to perform statistical analyses of the measured data and revealed that cutting length and depth of cut had the greatest effect on both crater and flank wear of the cutting tool. These results confirm that high-speed machining of Ti6Al4V alloy is a reliable process, with cutting speed identified as having a relatively small influence on the tool wear and resultant roughness of the machined surface relative to other parameters.

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Morphology evolution and micro-mechanism of chip formation during high-speed machining

Cited by 15 publications

References 22 publications

Research of High-Speed Machining With Disk Cutters

Research of High-Speed Machining With Disk Cutters

An Improvised Method of Machinability Evaluation with Predictive Temperature Model for Inconel 625: A Holistic Machinist’s Perspective

Fundamental Investigation into Tool Wear and Surface Quality in High-Speed Machining of Ti6Al4V Alloy

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