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The grinding force is the most sensitive physical measure of reaction loads in the grinding process. To enhance surface quality and assure high efficiency and stability of the grinding process, it is essential to accomplish adaptive control of the grinding force. This paper suggests a grinding force adaptive control system based on spindle motor …
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Time Estimation Tables The proposed time estimation method has the following sequence: 1. Begin with an engineering drawing 2. Develop a process plan 3. Estimate the tirnes from simplified tables The tables which follow are divided into three categories for each machine: — Machine setup time Part fixturing time — Material removal time
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Oct 1998. Y. Ju. Tom Farris. Srinivasan Chandrasekar. View. Show abstract. PDF | On Jul 4, 2018, Do DUC Trung published Calculating Cutting Force in Grinding | Find, read and cite all the research ...
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Grinding temperature prediction The thermal effects due to the grinding process have a significant effect on the produced residual stress. Previous work by [3, 4] have shown that elevated temperature result in tensile stress on the workpiece surface. Jaeger [7] proposed a method of determining the temperature rise based on moving heat …
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In order to meet the P2-grade bearing grinding requirements, we designed a high-speed internal grinding machine to be used for grinding bearing raceways and inner circles. The machine has a T-type layout and a four-axis numerical control linkage. It is supported by hydrostatic pressure and driven directly by a torque motor. In addition, it is …
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To obtain higher machining quality, this process may cost the significant amount of machining expenditures for grinding time, grinding wheel, grinding machine, lubrication etc. [4][5].
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Grinding processes are very complex due to the multitude of influencing parameters, resulting from the stochastic tool topography with numerous geometrically undefined abrasive cutting edges. Thus, the efficient design and optimization of these processes is a challenging task. Process simulations can be used as a flexible tool for …
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He can be reached by phone at 512-934-1857 or via email at JB@TheGrindingDoc. Bridging the gap between academic and shop floor grinding knowledge. Grinding is a "strategic process" that occurs close to the end of the production chain after much labor has been put into a product. As such, it can determine the success …
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2.2 Grinding process 2.2.1 Grinding conditions. As shown in Table 2, three grinding process parameters, namely wheel speed (v s), workpiece speed (v w), and grinding depth (a p), were selected with four levels.The levels of these three parameters were chosen based on the working conditions of precision grinding or micro-grinding of …
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The computation time includes signal processing time and feature extraction time. These two steps were executed on a laptop with i7-6820HQ CPU @2.7GHz and 16GB DDR4 RAM. ... The computation time for features in the grinding force and acceleration signals is almost the same, while the computation time for features in the …
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Request PDF | Residual stresses computation in a grinding process. J Mater Process Technol 147:277-285 | Grinding induces residual stresses, which can play an important role on the fatigue and ...
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Grinding is one of the most commonly used operations in the industry. Optimization of the grinding process can significantly improve the product quality and minimize operational costs and production time. Due to nonlinearity and complexity, optimization of the grinding process is one of the most challenging tasks in the field of …
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1 Introduction Grinding is one of the most commonly used operations in the industry. Using a rotating high-speed wheel, its goal is to remove chips from the …
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Web. In the equation of Time for Cylindrical Grinding Cut. Length of Cut = Length of job + Over-Travel. where, Over-Travel equals to 0.5 cm. And Feed/Rev. = w/2 (for rough cut) or w/4 (for finishing cut).
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on grinding applications. The guide covers these main areas: • Technical basics • Three applications • The working environment We begin by explaining some technical terms and the con-cepts that lie behind them. Three applications then form the heart of the guide. We look at: • Precision or die grinding • Rough grinding and cutting off
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Time for Rough Cylindrical Grinding Cut: Time for Finishing Cylindrical Grinding Cut: ... Enter your search terms Submit search form : Web: : In the equation of Time for Cylindrical Grinding Cut Length of Cut = Length of job + Over-Travel where, Over-Travel equals to 0.5 cm. And Feed/Rev. = w/2 (for rough cut) or w/4 (for ...
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2.1 Signal selection. Based on the procedure shown in Fig. 1, the first step is to select the signal that can reflect the time-varying characteristics of the grinding process.Force, a commonly used sensor signal in the grinding process, is related to various phenomena such as cutting, friction, and adhesion during the grinding process.
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Abrasive belt grinding is a commonly used machining technique for many key components, especially on aerospace equipment. The surface roughness results from a belt grinding process are essential for the fatigue performance of workpieces; however, little research was reported on the surface topography generation of abrasive belt …
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Compared to the finite element method the computing time is reduced by several orders of magnitude. ... 2004, "Residual Stresses Computation in a Grinding Process," J. Mat. Processing Techn., 147 (3), 277-285. Google Scholar Boucly V., Nélias D., Green I., 2007, "Modeling of Rolling and Sliding Contact between Two Asperities". …
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Overview Horizontal Grinding Horizontal grinding Vertical grinding Centered grinding Centerless grinding Creep Feed Grinding and stock is removed with passes at low work …
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In this paper an optimization study to determine the replaced grinding wheel diameter when surface grinding of stainless steel was presented. In the study, the minimum manufacturing time was selected as the objective of the optimization problem. Also, the influences of several process parameters on the optimum replaced wheel diameter were ...
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This chapter presents an experimental study of grinding forces as relationship of workpiece speed v, feed rate sa and depth of cut a. For the modeling of cylindrical grinding used was response surface methodology and genetic algorithms. Modeled was the tangential force Ft and the normal force Fn in cylindrical grinding. The …
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The calculation of the function parameters was performed, omitting the results outside the specified grinding time. The calculated values of these parameters were a = 4.252 μm and n = 1.098. Figure 1 and Figure 2 present the values of the parameter " a " and the exponent " n " depending on the grinding time.
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Estimation of the Grinding Time by Means of the Grinding Process Model Abstract: In grinding operation, elastic deformations of the grinding machine and the grinding wheel induce a residual stock removal of …
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Modeling of the grinding process describes the relationship between the input and output values of the process to estimate the static and dynamic performance of …
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Freeze-drying is an important processing unit operation in food powder production. It offers dehydrated products with extended shelf life and high quality. Unfortunately, food quality attributes and grinding characteristics are affected significantly during the drying process due to the glass transition temperature (during drying …
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The grinding process occupies an essential part in the manufacturing industry. In most cases, the grinding process for welds is performed by workers, who have to endure the noise and dust produced by the grinding tools and the workpieces [1, 2].There are problems such as low production efficiency, high cost, and inconsistent …
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One of the most efficient processes for the hard finishing of gears in batch production of external gears and gear shafts is the continuous generating gear grinding. The generating gear grinding is used for the hard finishing of gears with a module of mn = 0.5 mm to mn = 10 mm [2], [3]. By the application of new machine tools the process can …
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WebThis paper aims to optimize grinding process considering a tri-objective mathematical model to simultaneous optimization of final surface quality, grinding cost and total process time.
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Tian et al. also proposed that the platform can be controlled independently, automatically, and in real-time during the grinding process of the automatic grinding system to achieve ultra-precision, high ...
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