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Open Journal of Applied Sciences 2017年第7期7卷 337-347页

作者： Kaushik Vijaya Prasad Kishore Triambak Kashyap Madapat Job Richard Posina Gerard Prabhu Rao Abhishek Rajole Rabara Hiren Department of Mechanical Engineering School of Engineering & Technology Jain University Karnataka India

The present work aims at the microstructural characterization of TiAlZrN/ Al2O3 and TiAlZrN/Si3N4 coatings deposited via lateral rotating cathodes. The coatings were deposited using Lateral Rotating Cathodes (LARC) technology. The deposited coatings were studied for its cross sectional morphology using scanning electron microscopy. Energy Dispersive Spectrometry was also conducted along the cross section to determine the elemental composition. Micro Vickers hardness test was conducted to determine the hardness of the coatings. The scanning electron microscope images showed that TiAlZrN/Al2O3 coatings showed preferred columnar grain orientation with multilayered structure while TiAlZrN/Si3N4 coatings exhibit a dense grain structure. The TiAlZrN/Si3N4 coating shows a hardness of 31.58 GPa while TiAlZrN/Al2O3 coating shows a hardness of 25.40 GPa. Dry turning tests were performed on AISI 304 stainless steel. The TiAlZrN/Si3N4 coatings show reduced flank wear. Both the coatings even under severe cutting conditions impart surface roughness of less than 1.5 μm.

关键词： Coatings Lateral Rotating Cathodes Dry machining High Speed machining Coated Cutting Tools Flank Wear Dry Turning

Optimization of Cutting Variables in machining

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Journal of Modern Transportation 1996年第2期13卷 98-104页

作者： Zhang Xueyan Wu Zhenye Zhou Guohua School of Economics and Management,Southwest Jiaotong University,Chengdu 610031,China School of Economics and Management Southwest Jiaotong University Chengdu 610031 China

ith the three criteria for cutting variables proposed by *** and ***,this paper analyzes the reasonable selection of cutting variables,and further states ... 详细信息

ith the three criteria for cutting variables proposed by *** and ***,this paper analyzes the reasonable selection of cutting variables,and further states the relations among maximum profit oriented cutting speed,minimum cost oriented cutting speed and maximum productivity oriented cutting *** puts forward a mathematical model for the optimization of cutting variables in machining.

关键词： machining maximum profit cutting speed

The P40 Cutting Tool Wear Modelization machining Fk20MnCr5

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Engineering（科研） 2011年第9期3卷 928-934页

作者： Idriss Amara Embarek Ferkous Faycal Bentaleb Razika Aouad Laboratoire d’Ingénierie des Transports et Environnement Campus Chaab ErsasUniversite Mentouri ConstantineConstantineAlgerie

This work presents an experimental study to describe a wear zone in the P40 cutting tools used during a dry lathing. Mechanics of cutting has been presented to investigate the effects of edge geometry of the cutting tool carbide cutting insert. In the field of the metals cutting, the wear of the cutting tools leads to a degradation of the cutting zone and work. It is thus important to study the evolution of the cutting criteria allowing to follow the tool degradation during a manufacturing operations and thus to decide whether to replace the tool or not. Three parameters: cutting speed, cutting feed and cutting depth are considered to modelize the tool wear. An experimental device, particularly, a work-piece in Fk20MnCr5 material was cutted on a conventional lath for shaping, a high resolution sensor (HRS), had been used for measuring wear zone. The rela- tionship between “the cutting speed, the depth of cut, the feed rate” are analysed and modelled. In order to deduce this shape the spline method to modelize the wear zone has been used and a mathematical model has been proposed.

关键词： machining Wear Cutting Tools Dry Lathing

Effect of Electrode Materials on Electric Discharge machining of 316 L and 17 - 4 PH Stainless Steels

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Journal of Minerals and Materials Characterization and Engineering 2012年第7期11卷 685-690页

作者： Subramanian Gopalakannan Thiagarajan Senthilvelan Department of Mechanical Engineering Pondicherry Engineering College Puducherry India

Electric Discharge machining (EDM) is one of the most efficiently employed non-traditional machining processes for cutting hard-to-cut materials, to geometrically complex shapes that are difficult to machine by conventional machines. In the present work, an experimental investigation has been carried out to study the effect of pulsed current on material removal rate, electrode wear, surface roughness and diameteral overcut in corrosion resistant stainless steels viz., 316 L and 17-4 PH. The materials used for the work were machined with different electrode materials such as copper, copper-tungsten and graphite. It is observed that the output parameters such as material removal rate, electrode wear and surface roughness of EDM increase with increase in pulsed current. The results reveal that high material removal rate have been achieved with copper electrode whereas copper-tungsten yielded lower electrode wear, smooth surface finish and good dimensional accuracy.

关键词： Electric Discharge machining Material Removal Rate Electrode Wear Surface Roughness Stainless Steel

Research on the Deformation of Turbine Blades at machining

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Energy and Power Engineering 2016年第1期8卷 1-12页

作者： Masu Yamada Keiji Sonoya Takahito Sobayashi Hiroshi Satoh TBM Corporation Nagano Japan Department of Mechanical Systems Yamanashi University Kofu Japan Nichia Tanko Co. Ltd. Tomioka Japan Oridea Inc. Mishima Japan

Along with the recent expansion of demand for electricity, the production of steam turbine blades has increased, and various materials forged of 12Cr ferritic heat-resistant types of steel have become widely used for this purpose. Although this material seems to be an excellent choice as heat-resistant steel, it requires a post-correction process for deformation after machining and thus lowers productivity. Therefore, we started basic experimental research, and through a series of tests, we found that 12Cr steel is a sticky material;the residual stresses after machining concentrate in the vicinity of the surface;and this influences the deformation of blades.

关键词： Turbine Blade machining Deformation 12Cr Steel

The Extremely Efficient New Model in Milling of Complicated Surfaces in 5-Axis machining for 3-Dimensional Contact

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World Journal of Engineering and Technology 2018年第3期6卷 625-630页

作者： Yi Lou Huran Liu Bo Tan Department of Mechanical Engineering Zhejiang University of Science and Technology Hangzhou China The State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan China

Although most of the 5-axis NC milling machine tool producers declare that their machine poses the function of 5-axis simultaneous machining, and most of the commercialized CAD/CAM software was reported it can support the 5-axis simultaneous machining, but there are very few analyses about their machining efficiency. I hope that the reader would be interested to know how the new method is?highly effective. The paper did a good job in motivating the problem mentioned here. The model of this paper is extremely efficient ant. This is a highly effective way of surface machining. There are also some areas that need improving. The mathematic presentation is not clear, but much more pages are needed, if the authors like to make it clearer. In the resent paper “The Extreme Efficiency of the New Model in Milling of Complicated Surfaces” we discussed the extreme efficiency of the new model in milling of complicated surfaces in 5-axis machining for 2-dimensional contact. While this time let’s discuss the same problem but much complicated one, 5-axis machining for 3-dimensional contact. As the research activities conducted by Dr. Liu Huran opened a new field and wide horizons in 5-axis machining of sculptured complicated surfaces using mathematical theories, and according to the interesting results presented in paper, Dr. Liu Huran is strongly encouraged if he can submit a similar work but this time with a new title that corresponds to the purpose [1].

关键词： Surface Contact NC machining

PERFORMANCE EVALUATION OF TANTALUM NITRIDE THIN FILM HARD COATED K20 CARBIDE INSERT ON machining INCONEL 600

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PERFORMANCE EVALUATION OF TANTALUM NITRIDE THIN FILM HARD CO...

Optimization of cutter-location for 5-axis NC machining freeform surface with a flat-end cutter

2006年中国机械工程学会年会暨中国工程院机械与运载工程学部首届年会

作者： S.Parthasarathy G.Srikrishna J.Rohit Fernando N.Muthukrishnan Graduate students in Mechanical Engineering Sri Venkateswara college of Engineering Pennalur Sriperumbudur-602 105 Tamil Nadu India Assistant Professor in Mechanical Engineering Sri Venkateswara college of Engineering Pennalur Sriperumbudur-602 105 Tamil Nadu India

To increase the accurate finishingproductivity of Inconel 600, plain turning byTantalum thin film hard coated K20 carbide insert isstudied. The main focus of this investigation is theturning performan

关键词： machining coated K20 insert toowear surface roughness Inconel 600

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Journal of Harbin Institute of Technology(New Series) 1999年第4期6卷 30-33页

作者：任秉银刘华明

axis NC machining freeform surface with a flat end cutter can theoretically improve material removal rate and surface finish, but it is very difficult to generate a gouge free cutter location. A new method of generating optimal cutter path is proposed to define the effective radius of a flat end cutter and determine the optimal step forward distance and step over distance. Thereby improving the NC machining efficiency and quality of freeform surfaces.

关键词： freeform surfaces 5 axis NC machining cutter location optimization flat end cutter

Study on machining Properties of Eucalyptus urophylla× ***:Ⅱ.Shaping,Boring,Mortising and Turning

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Chinese Forestry Science and Technology 2006年第2期5卷 17-21页

作者： HOU Xinyi JIANG Xiaomei GAO Jianmin YIN Yafang Research Institute of Wood lndustry Chinese Academy of Forestry Beijing 100091 P. R. China College of Wood Science and Technology Beijing Forestry University Beijing 100083 P. R. China

The research method of this paper is based on the standards of American Society for Testing and Materials (ASTM). Four items that contain boring, mortising, shaping and turning are selected to study the machining properties of E. urophylla × E. grandis plantation wood. The reasons for machining defects are analyzed. The resultshows thatE. urophylla × E. grandis planted in South China isa good specieswith great potential for solid wood utilization.

关键词： Eucalyptus urophylla×E grandis plantation wood shaping boring mortising machining defects

Study on Theory of Cutting Edge Modeling and Helical Groove machining of Nose Burr

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Journal of Harbin Institute of Technology(New Series) 1998年第4期5卷 19-22页

作者：刘井玉刘华明

From the analysis of helical characteristics, ideal geometric models of cutting edge and helical groove of nose burr are developed to realize the ideal geometric model of helical groove of nose burr, in terms of not only the shape of cutting edge being accurately machined but also rake angle and depth of groove in fall compliance with design requirements. The fundamental relationship of too-groove engagment for groove shaping and the complex formulas related are verified by the example of machining and its computer simulation.

关键词： Nose burr helical groove principle of machining ideal geometric model computer simulation