On the periodicity of fixed-abrasive planetary lapping based on a generic model

Li, Hao Nan; Yang, Yue; Zhao, Yong Jie; Zhang, Zhanlin; Zhu, Weiqiang; Wang, Weiling; Qi, Huan

doi:10.1016/j.jmapro.2019.05.036

Cited by 60 publications

(20 citation statements)

References 33 publications

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“…In the milling processing, the friction, high temperature and high pressure in the cutting area will cause surface thermal damage, reduce the wear resistance, fatigue and service life of mechanical parts. Therefore, lubrication and cooling are very important in the milling area [1][2][3]. Conventionally, a large amount of cutting fluid is usually poured into the zone area to remove the generated heat and reduce the wear during machining.…”

Section: Introductionmentioning

confidence: 99%

Lubrication Performance of Different Concentrations of Al2O3 Nanofluids on Minimum Quantity Lubrication Milling

Bai

Jiang

et al. 2021

Preprint

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Lubricant plays an important role in machining. Due to the problems of environmental protection and workers' health, traditional lubricants are gradually replaced. Nanofluid, adding nanoparticles into base oil, is a kind of environment-friendly low-carbon lubricant, which improves not only the heat transfer capacity but also the lubrication performance. However, how many nanoparticles added into the fluid can improve the lubrication performance best? There are few studies on the mechanism of lubrication performance of different concentrations, and the results are not very clear. In this research, nanofluid as lubricating fluid is made by adding 0.5~2.0% mass concentration of Al 2 O 3 nanoparticles to the cottonseed oil during milling Grade 45 steel in minimum quantity lubrication (MQL) mode. The tribological properties of nanofluids with different concentrations at the tool/workpiece interface were studied by macro evaluation parameters (specific energy) and micro evaluation parameters (surface roughness, micro morphology, contact angle and viscosity). The results show that the concentration of nanoparticles has the most optimal value. When the concentration is 0.5 wt%, the specific energy is the minimum (0.281), and the roughness value is the lowest (1.63 μ m) . Meanwhile, slender chip and the largest droplet wetting area are obtained, which indicates better tribological properties. There is a nonlinear relationship between the lubricating effect of nanofluid and its concentration. The proper concentration of Al 2 O 3 nanofluid has good tribological properties and more potential to replace the pouring lubrication.

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Section: Introductionmentioning

confidence: 99%

Lubrication Performance of Different Concentrations of Al2O3 Nanofluids on Minimum Quantity Lubrication Milling

Bai

Jiang

et al. 2021

Preprint

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“…However, drilling is still a challenging task for manufacturing engineers due to the varying tool-work interaction when drilling co-cured material. Up to now, many investigations have been reported in terms of composite machining [13][14][15][16][17][18][19][20][21][22][23][24] and composite/metal stack machining. [25][26][27][28][29][30][31] Much attention was in particular paid on the drilling operations of the above materials.…”

Section: Introductionmentioning

confidence: 99%

Hole quality and tool wear when dry drilling of a new developed metal/composite co-cured material

Zou

Dang

Cai³

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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The new developed metal/composite co-cured material composed of carbon fiber–reinforced plastic and Al phases has been increasingly applied for manufacturing of attitude control flywheel in aerospace industry. However, drilling of co-cured material is still a challenging task to produce holes with high quality and low cost in the assembly chain and dynamic balance debugging of attitude control flywheel. In other words, the relevant mechanisms and experimental findings involved in the drilling process of carbon fiber–reinforced plastic/Al co-cured material is not clearly defined, which impedes the progress of attitude control flywheel production. To this end, this article specially addresses the experimental studies on the drilling process of carbon fiber–reinforced plastic/Al co-cured material with standard TiAlN-coated cemented carbide twist drill. The significance of this work aims to reveal the regardful cutting responses of the hole characteristics and tool wear modes during the practical drilling process of co-cured material. A full factorial experiment including three levels of feed rate and four levels of cutting speed was performed. The hole diameter shows different values in different positions while it indicates consistent pattern regardless of the cutting variables: the largest in the Al phase, followed by the upper and lower carbon fiber–reinforced plastic phases, respectively. Grooves and matrix degradation are the major machining defects for carbon fiber–reinforced plastic layers, while a great chip debris adhered to the machined surface is the case for Al layer. Subsequent wear analysis showed that abrasion was mainly maintained at the vicinity of major/minor cutting edges and drill edge corner, followed by chip adhesion on the chisel edge region. Carbide substrate of drill flank face is exposed, and thereafter cavities are formed under the strong mechanical abrasion. These results could provide several implications for industrial manufacturers during the attitude control flywheel production.

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“…Ti6Al4V is widely used in aerospace, automotive, biomedical engineering, bone transplantation and chemical industry [3] for bone replenishment and low elastic modulus [4,5] due to its high strength to weight ratio, low density, corrosion resistance, wear resistance and other good mechanical properties. Although the surface of Ti6Al4V has good workability from the viewpoint of cutting force, its inherent characteristics, especially low thermal conductivity, relatively low modulus of elasticity, high temperature strength, high chemical activity and small deformation coefficient [6][7][8], lead to Ti6Al4V difficult to process and often require relatively long processing times and expensive tools [9].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of different tool geometries in the finite element simulation of ultrasonic-assisted drilling of Ti6A14V

Wang

2020

J Braz. Soc. Mech. Sci. Eng.

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This paper attempts to analyze the effect of various drilling parameters such as feed rate, spindle speed and vibration frequency on performance characteristics such as thrust force, effective stresses, temperature and chip morphology in conventional drilling (CD) and ultrasonic-assisted drilling (UAD) of Ti6A14V using three different point angle (140°, 120°, 90°) drill bits in order to optimize the chip breakability of Ti6A14V. The three different point angle drill bits are utilized to establish the finite element models (FEM) to simulate the drilling process with Lagrangian approach in DEFORM-3D software. The simulations are validated by the experimental findings and analytical data of thrust forces, and the percent errors in results range approximately between 3 and 7%. The results obtained prove that UAD can produce segmental discontinuous chip, lower thrust force, lower process temperature and lower effective stress. The point angle of 120° drill achieved the thinnest chip thickness and the excellent effects of chip breaking. The achieved results are assumed to help for the optimization of the drill tool geometries, drilling parameters and chip breakability.

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On the periodicity of fixed-abrasive planetary lapping based on a generic model

Cited by 60 publications

References 33 publications

Lubrication Performance of Different Concentrations of Al2O3 Nanofluids on Minimum Quantity Lubrication Milling

Lubrication Performance of Different Concentrations of Al2O3 Nanofluids on Minimum Quantity Lubrication Milling

Hole quality and tool wear when dry drilling of a new developed metal/composite co-cured material

Evaluation of different tool geometries in the finite element simulation of ultrasonic-assisted drilling of Ti6A14V

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