A new criterion to evaluate the machined surface quality of the Nomex® honeycomb materials

2021 ◽  
Vol 69 ◽  
pp. 567-582
Author(s):  
M. Jaafar ◽  
H. Makich ◽  
M. Nouari
Keyword(s):  
Surface Quality ◽  
Machined Surface ◽  
Machined Surface Quality ◽  
New Criterion

scholarly journals 302 Evaluation of Machined Surface Quality of Long Fiber FRM by Electrical Discharge Machining

2000 ◽  
Vol 2000.53 (0) ◽  
pp. 49-50
Author(s):  
Rikio HIKIJI ◽  
Yoshihiro KAWANO ◽  
Koji ABURADA ◽  
Masakazu HARADA ◽  
Minoru ARAI
Keyword(s):  
Surface Quality ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Machined Surface ◽  
Machined Surface Quality

Influence of the CAM Parameters and Selection of End-Mill Cutter when Assessing the Resultant Surface Quality in 3D Milling

2014 ◽  
Vol 474 ◽  
pp. 267-272 ◽  
Author(s):  
Michal Fabian ◽  
Peter Ižol ◽  
Dagmar Draganovská ◽  
Miroslav Tomáš
Keyword(s):  
Ball Milling ◽  
Surface Quality ◽  
End Mill ◽  
Machined Surface ◽  
Machined Surface Quality ◽  
Different Types ◽  
Mill Cutter ◽  
Milling Tools ◽  
Selection Of

The paper deals with the effects of CAM data needed to produce desired quality of shaped surfaces in forming dies making. In general, the input CAM data have strong influence to the final surface quality. The shaped surfaces 3D milling has been modeled as end ball milling of the surfaces with defined inclination. The end ball milling is the most common way to finish shaped surfaces. Directions of the milling tools motion and applied cutting conditions have been used to simulate data when setting milling strategies. The resultant machined surface quality has been identified in terms of the surface roughness. The paper introduces recommendations applicable to the programming of the different types of milling strategy when producing form surfaces.

The Effects of Cutting Parameters on Surface Texture of Hybrid Composite CFRP/AL2024

2016 ◽  
Vol 863 ◽  
pp. 111-115 ◽  
Author(s):  
Saiful Bahri Mohamed ◽  
Wan Noor Fatihah Mohamad ◽  
Martini Muhamad ◽  
Jailani Ismail ◽  
Been Seok Yew ◽  
...  
Keyword(s):  
Surface Quality ◽  
Hybrid Composite ◽  
Cutting Parameters ◽  
Depth Of Cut ◽  
Machined Surface ◽  
Machined Surface Quality ◽  
Mechanical And Physical Properties ◽  
End Mills ◽  
Dry Conditions

The use of hybrid composite materials has increased due to their special mechanical and physical properties. However, machining of these materials is extremely difficult due to non-homogeneous, anisotropic and highly abrasive characteristics. The performance of machined surface quality of CFRP/Al2024 was described using two level factorial methodology. This research aims to study the interaction effects and significant factors of cutting parameters on the surface quality and optimise the cutting parameter for the surface quality of CFRP/Al2024 1μm to 2μm. The trimming process test was performed under dry conditions using burr tools 6mm diameter of end mills. The factors investigated were spindle speed (N), feed rate (fr) and depth of cut (dc), meanwhile profile roughness parameters (Ra) of CFRP and Al2024 were the response variables. Results show that the best estimated value of fr should be 500 mm/min to 530 mm/min, N is between and 2313.870 rpm to 2336.042 rpm. For both responses, N is the most significant effect followed by fr and dc.

scholarly journals Spectral Properties of Milling and Machined Surface

2016 ◽  
Vol 836-837 ◽  
pp. 570-577 ◽  
Author(s):  
Gabor Stepan ◽  
Mate Toth ◽  
Daniel Bachrathy ◽  
Suri Ganeriwala
Keyword(s):  
Surface Quality ◽  
Spectral Properties ◽  
Cutting Tools ◽  
Milling Process ◽  
Machined Surface ◽  
Industrial Case Study ◽  
Machined Surface Quality ◽  
Negative Effect

Machine tool vibrations cause uncomfortable noise, may damage the edges of cutting tools or certain parts of machine tools, but most importantly, they always have negative effect on the quality of the machined surface of workpieces. These vibrations are especially intricate in case of milling processes where complex tool geometries are used, like helical, serrated, non-uniform pitch angles, and so on. During the milling process, the arising vibrations include free, forced, self-excited, and even parametrically forced vibrations together with their different combinations. Regarding surface quality, the most harmful is the self-excited one called chatter, which is related to the regenerative effect of the cutting process. Its relation to machined surface quality is demonstrated in an industrial case study. The modelling and the corresponding cutting stability are presented in case of a helical tool applied for milling with large axial immersions. The extremely rich spectrum of the measured vibration signals are analyzed by means of model-based predictions, and the results are compared with the spectral properties of the corresponding machined surfaces. The conclusions open the way for new kinds of chatter identification.

Systematic Study of Ultrasonic Vibration Assisted Electron Beam Irradiation Process

2009 ◽  
Vol 131 (4) ◽  
Author(s):  
Z. G. Wang ◽  
S. Kobayashi ◽  
I. Matsumoto ◽  
K. Yamazaki ◽  
X. Cheng ◽  
...  
Keyword(s):  
Surface Quality ◽  
High Frequency ◽  
Vibration System ◽  
Large Area ◽  
Machined Surface ◽  
Machined Surface Quality ◽  
External Forces ◽  
Irradiation Process ◽  
Melting And Solidification

Large area electron beams (EBs) have recently been successfully used to machine dies and tool steels. This large area EB process can greatly improve the machined surface quality as well as its corrosion resistance. However, some craters would still exist on the machined surface, which limits the further improvement of the surface quality of the machined workpieces. One possible solution is to apply external forces to workpieces by using high-frequency vibrations to smooth craters during melting and solidification in the EB process. In this study, a vibration system is designed to generate a high-frequency vibration with a certain amplitude by using sound wave’s transfer inside solids. Then, the performance of the designed vibration system is evaluated. Finally, the experiments of the vibration assisted EB process are carried out to verify the performance of assisted vibration in the EB process.

Research on Machined Surface Quality of High Speed Hard Machining for Harden Steel

2012 ◽  
Vol 500 ◽  
pp. 82-88 ◽  
Author(s):  
Cai Xu Yue ◽  
Xian Li Liu ◽  
Da Wei Sun ◽  
Ming Yang Wu
Keyword(s):  
Surface Quality ◽  
High Speed ◽  
Cutting Parameters ◽  
Hardened Steel ◽  
Machining Process ◽  
Machined Surface ◽  
High Speed Cutting ◽  
Machined Surface Quality ◽  
Side Flow

For its good processing flexible, economic and environmental protection performance, hardened steel GCr15 is used widely in car and energy industry. Although surface quality in machining process is not controlled well, that restricts application of hardened steel GCr15 extensive to a certain degree. Therefore, this study revealed the effect of cutting parameters on surface roughness. Also influence of cutting conditions on surface morphology and organization generation mechanism of subsurface were stuied for high-speed cutting hardened steel GCr15. Appear reasons of plastic side flow on surface was researched. Also, effect of tool wear on surface quality was studied as well. The research results provided theoretical basis for rational choice for high speed hardened steel cutting process.

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