آخرین محصولات

Modelling and simulation of process: Machine interaction in grinding

Tool grinding is an essential process for the production of cemented carbide tools. In that context, the investigation of specific effects like the resulting surface profile and the fluid dynamic ...

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Analytical modeling of grinding process in rail profile correction

Most of previous studies on this subject center around the cutting behavior of a single grinding wheel and focus on building a theoretical understanding of the grinding process. A target profile for rail grinding can be built and optimized per the wheel-rail contact mechanics, particularly the respective wear level of the wheel and rail, to ...

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On the Basic Mechanics of the Grinding Process

Abstract. New geometrical concepts of grinding are presented and combined with metal-cutting principles to predict grinding forces. Experimental evidence is used to show the dependence of grinding mechanics on three fundamental variables, the length and cross-sectional area of the undeformed chip, and the cutting speed. These same …

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Grinding of Glass: The Mechanics of the Process | J. Manuf. Sci.

An investigation of the material removal process in grinding glass and the effects of the grinding process on the surface structure and fracture strength of the finished product is reported in two papers. This first paper is concerned with the mechanics of material removal for grinding a large number of glasses and some glass-ceramics over a wide range of …

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3D metal removal simulation to determine uncut chip

The two most important geometric parameters that describe the mechanics of grinding are the uncut chip thickness and the contact length. Currently, analytical approaches are used to estimate these parameters. The accuracy of these approaches, however, is limited because they do not take into account the random shape, size, and …

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On the mechanics of the grinding process

The grinding process is one of the most important and widely used machining processes to achieve the desired surface quality and dimensional accuracy. …

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A Review of Theories of Metal Removal in Grinding

Abstract. In recent years, increasing interest in the mechanics of grinding as a metal cutting process has resulted in a considerable step forward in understanding the fundamental parameters, though no complete solution is yet available. Much is now known about the shape of the abrasive grits, the nature of their cutting edges, and how these ...

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Honing Machine: Types, Working, Tools, Operations [PDF]

The honing process is used to remove stocks as it is a fast process. Used for bore tolerance and bore polishing. Honing is used for finishing bores on almost any type of material such as sprayed coatings, CGI, Ceramics, etc. You might like: 14 Types of Grinding Machines [Complete Guide] Advantages of Honing Process

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Theories on Rock Cutting, Grinding and Polishing Mechanisms

Chen X. and Rowe W. B. 1996 Analysis and Simulation of the Grinding Process. Part 2 Mechanics of Grinding, International Journal of Machine Tools and Manufacture, 36 8 883 896; 8. Coes L. 1971 Abrasives, Springer-Verlag, New York, 177; 9. Kato K. Hokkirigawa K. Kayabo T. and Endo Y. 1986 Three Dimensional Shape Effect on …

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Simulation of precision grinding process, part 1: generation of the

Analysis and simulation of the grinding process. Part ii: mechanics of grinding. International Journal of Machine Tools and Manufacture (1996) ... Grinding forces are a key parameter in the grinding process, most previous studies on grinding forces, however, (i) were regardless of grain-workpiece micro interaction statuses and (ii) could …

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On the mechanics of the grinding process

DOI: 10.1016/S0890-6955(03)00186-X Corpus ID: 110628193; On the mechanics of the grinding process – Part I. Stochastic nature of the grinding process @article{Hou2003OnTM, title={On the mechanics of the grinding process – Part I. Stochastic nature of the grinding process}, author={Zhen Bing Hou and Ranga …

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Analysis and simulation of the grinding process. Part I: Generation …

Liverpool, U.K. 871 872 Xun Chen and W. Brian Rowe wheel generated from the method provides a basis for the further simulation of the grind- ing process. 2. MECHANICS OF THE DRESSING PROCESS The surface profile of the wheel formed by dressing is determined by the relative motion between the diamond and the wheel, the …

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Mechanism of grinding process | Download Scientific …

The process of cutting when grinding is defined by the kinematic and geometric parameters. Kinematic parameters are: cutting speed v s and workpiece speed v w, respectively, feed s if there is ...

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On the mechanics of the grinding process, Part III—thermal …

The consequence of heat generated in grinding, in general, and abrasive cut-off operation, in particular, are well known. In numerous studies, Shaw [16], [17] emphasized the importance of this aspect in the analysis of the cut-off operation. Eshghy [1], [2] was the first to consider thermal aspects of the cut-off operation analytically. Fig. 1 (a) is a …

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A New Approach to Development of a Grinding Force Model

A theoretical model has been developed for representing the grinding forces. This is based on the fact that the chip formation during grinding consists of three states: ploughing, cutting, and rubbing. Expressions for the total normal and tangential force components during these three stages were established. These components were expressed in terms …

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On the mechanics of the grinding process, Part III—thermal …

In Part I of this 3 part series on the mechanics of grinding [8] an attempt was made to analyze the mechanics of grinding (both fine grinding and the cut-off operation) using probability statistics. In Part II, thermal analysis …

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UNIT 5 MECHANICS OF GRINDING AND and Grinding …

potential applications. To understand how a grinding process works, one should know how the material removal takes place during grinding or in other words one should learn the mechanics of grinding which would also involve the important parameters affecting the grinding process performance. As regards the applications, one should know the kind

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On the mechanism and mechanics of wheel loading in grinding

The cutting mechanics of the abrasive during grinding is shown in Fig. 1 (a). Individual abrasive grains on the grinding wheel, interacts with a workpiece surface (Fig. 1 (b)–1(f)) and act as a cutting tools for chip generation and material removal.Fig. 2 depicts the major geometric characteristics of an active grain edge required for the cutting process, …

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MODELING OF GRINDING PROCESS MECHANICS

abrasive grit similar to a micro milling tool tooth. Knowing the force and total process energy, by using two dimensional moving heat source theory, process temperatures are predicted. Moreover, an initial approach and experimental results are proposed in order to investigate and model dynamics and stability dynamics of the grinding process.

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Elucidating Grinding Mechanism by Theoretical and Experimental …

Grinding is one of the essential manufacturing processes for producing brittle or hard materials-based precision parts (e.g., optical lenses). In grinding, a grinding wheel removes the desired amount of material by passing the same area on the workpiece surface multiple times. How the topography of …

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The effects of grit properties and dressing on grinding mechanics …

The proposed parameters (e ∗, τ 0, ξ and μ) are hence useful quantitative indicators of the wheel performance over a range of grinding conditions for an arbitrary A g g r, i.e. a given set process geometry and kinematics.The proposed framework for wheel-performance assessment does not consider the progression of grinding wheel wear. It …

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On the Mechanics of the Grinding Process Under Plunge Cut …

Two broad categories of grinding action are recognized; one where negligible ploughing and rubbing take place and where the plunge velocity versus normal force intensity curve is a straight line through the origin, the other where ploughing and rubbing predominate and the plunge velocity versus normal force intensity curve is concave upward. The effects of …

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On the mechanics of the grinding process, Part III

Z.B. Hou, R. Komanduri, On the mechanics of the grinding process Part II: On the thermal analysis of fine grinding, accepted for publication in Int. J. of Machine Tools and Manu-facture (200doi:10 ...

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Experimental investigation on material removal mechanism …

The study focuses on the removal behaviours of rail material during grinding at different forward speeds, which provides a better understanding for improving the grinding efficiency and quality. The results indicate that the rise in forward speed leads the grinding efficiency to increase and then decrease, and the grinding process is the …

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2. BACKSIDE GRINDING PROCESS

The residual stress in the wafer after the grinding process can be predicted from the slope of the trend. In this research, one cycle is defined as one revolution of the wafer. In this case, the thickness of the wafer is ground from 780 to 360 μm, and the overall grinding process will go through approximately 500 cycles.

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On the Basic Mechanics of the Grinding Process

On the Basic Mechanics of the Grinding Process W. R. Backer, M. E. Merchant Author and Article Information Trans. ASME. Jan 1958, 80 (1): 141-146 (6 …

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Grinding and Finishing

grinding energy (u) of 35 W-s/mm3. • The grinding wheel rotates at 3600 rpm, has a diameter (D) of 150 mm, thickness (b) of 25 mm, and (c) 5 grains per mm2. The motor has a power of 2 kW. • The work piece moves (v) at 1.5 m/min. The chip thickness ratio (r) is 10. • Determine the grinding force and force per grain. • Determine the ...

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On the mechanics of the grinding process, Part …

On the mechanics of the grinding process, Part II—thermal analysis of fine grinding. 1. Introduction. Fine grinding is an important precision manufacturing process. …

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Analysis and simulation of the grinding process. Part II: Mechanics …

Abstract. This paper is the second of three parts which describe the analysis and simulation of the grinding process. Generation of the workpiece surface depends on the interactions between the grains of the wheel and the workpiece. The grinding wheel surface generated by dressing was simulated by the method described in Part I.

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Simulation of surface grinding process, part 2: interaction of the

In this paper, a new method for grinding hypoid gears by applying generating and Waguri (1964) motions is presented. Two motions that contribute to the roughness of the tooth surface are considered: (i) the rotation of the grinding wheel and (ii) the generating motion of the grinding wheel to the pinion and the Waguri motion for …

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