Theoretical analysis on effects of grain size variation |
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| Affiliation: | 1. School of Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi 316-8511, Japan;2. Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan;1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China;2. Center for Precision Engineering, School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China;3. State Key Laboratory of Ultra-precision Machining Technology, The Hong Kong Polytechnic University, Hong Kong;1. Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa-cho, Hitachi-shi, Ibaraki, 316-8511, Japan;2. Department of Mechanical Systems Engineering, Ibaraki University, 4-12-1 Nakanarusawa-cho, Hitachi-shi, Ibaraki, 316-8511, Japan;1. Graduate School of Science and Engineering, Ibaraki University 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan;2. School of Engineering, Ibaraki University 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan;3. Ultra-precision Machining Center, Zhejiang University of Technology, No.18, Chaowang Road, Xiacheng District, Hangzhou City, 310014, PR China |
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| Abstract: | Grinding wheels consist of abrasive grains, bonding materials and porous, which are specified by five factors; type of grain, size of grain, bonding material, bonding strength and grain concentration or volume fraction of grain. The grain size is represented by the mean diameter/radius of grains. However, the abrasives in a grinding wheel are randomly scraggly in size and shape. There is no particular aspect to regulate the variation in grain size. This paper addresses, via a theoretical analysis on the distribution of grain size, the average volume of a grain, the number of grains contained in a specific volume of the wheel, the number and protrusion distribution of grains exposed in a wheel working surface and the fraction of effective grain, when the grain size varies. The effect on the resultant finished surface roughness is also discussed. |
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| Keywords: | Grain size Standard deviation Number of grains Effective cutting edge Protrusion height Surface roughness |
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