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Ceramic balls are expected to become useful for tougher bearings than conventional ones. However, the conventional ball lapping method which uses a couple of flat and V-groove lapping plates ...
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The method of lapping precision ball with variable-radius groove is developed in recent years. An experimental study on lapping ceramic balls with variable-radius groove was carried out. Taguchi method was used to design the orthogonal experiment of rough lapping, and the material removal rate (MRR) and the roundness were selected …
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Abstract The finishing process of advanced ceramic balls can be divided into two steps. The first step is lapping in which most of the stock from the ball is removed at a higher material removal rate. The …
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1 The polishing process of advanced ceramic balls using a novel eccentric lapping machine J. Kang a,*, M. Hadfield b aSchool of Engineering and Design, Brunel University, UK b School of Design, Engineering & Computing, Bournemouth University, UK Abstract: The finishing process of advanced ceramic balls can be divided into two steps. The first …
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The top plate which has a flat lapping surface is stationary. Ceramic balls are lapped between the top plate and the V-groove of lower plate (Fig. 2). Because of the eccentricity between the centre of circular V-groove and the rotational axis of the lower plate, there will be an acceleration of
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Ceramic balls are produced via powder metallurgy and compared to steel balls are preferred due to their special physical and mechanical properties. Ceramic balls can reach the desired surface finishing, sphericity, and diameter by finishing processes such as grinding, lapping, and polishing. By considering the length of time and high …
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It takes about 10 weeks for a batch of ceramic balls to be completed from the receiving state to the finished state. 6 In order to improve the lapping accuracy and …
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The lapping and polishing re sults of advanced ceramic balls on the novel eccen tric lapping machine are superexcellent. Kinematic analysis reveals that t he most influential parameters are the ...
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It takes about 10 weeks for a batch of ceramic balls to be completed from the receiving state to the finished state. 6 In order to improve the lapping accuracy and efficiency of ceramic balls, researchers have developed a series of ceramic balls lapping methods. 7–11 Among them, considering the economics Kang and Hadfield's 12 …
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ceramic ball with G5 grade, and the roundness value is close to the requirement of G5. The variable-radius groove lap-ping method is very suitable for improving the precision of batch lapping for ceramic balls. Keywords Ceramic balls, lapping, variable-radius groove, Taguchi method, roundness Date received: 9 February …
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Theoretical and experimental study of ceramic balls lapping with eccentric plates and eccentric V-groove Article 20 July 2021. 1 Introduction. Demand for high-precision, high-performance, and highly automated equipment is increasing along with the rapid development of industrial technologies. All the industries have a high number of …
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To study the lapping process and sphere-shaping mechanism of ceramic ball under DRP lapping mode and reduce the experiment trails, a simulation method utilising the section-dividing conception that special surface is divided into zones by latitude circles and longitude circles with certain step lengths is used. To study the lapping …
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brief review on the finishing process of ceramic balls is presented. The design of an experimental eccentric lapping apparatus which allows lapping of 13.4 mm diameter …
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Dual Rotated Plates (DRP) eccentric lapping mode is developed on the base of traditional eccentric lapping mode for precise balls. Spin angle is an important target of expressing ball rotation in ...
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Kang J., Hadfield M. A study on the lapping of ceramic ball. In Surpace Treatment IV—Computer Methods and Experimental Measurements, Assisi, Italy, 1999, pp. 389–398 (Computational Mechanics Publications, Southampton).
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Theoretical and experimental study of ceramic balls lapping with eccentric plates and eccentric V-groove Article 20 July 2021. Processing of high-precision ceramic balls with a spiral V-groove plate Article Open access 31 March 2017. Establishment of material removal model for lapping ceramic balls with variable-radius groove plate ...
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Establishment of material removal model for lapping ceramic balls with variable-radius groove plate Fenfen Zhou1 & Weifeng Yao2 & Julong Yuan3 & Fan Li3 & Binghai Lyu3 & Ping Zhao3 Received: 28 May 2020/Accepted: 15 October 2020 # Springer-Verlag London Ltd., part of Springer Nature 2020
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ceramic ball with G5 grade, and the roundness value is close to the requirement of G5. The variable-radius groove lap-ping method is very suitable for …
WhatsApp: +86 18221755073
Abstract. The finishing process of advanced ceramic balls can be divided into two steps. The first step is lapping in which most of the stock from the ball is removed at a higher material removal rate.
WhatsApp: +86 18221755073
Ball Check Valves — Ball Poppet Valves — Ball and Seat Valves — Ball Valves — Diamond Impregnated Lapping Ball — Diamond Impregnated Lapping Ball on a Stem. Designing and building a leak-tight ball valve …
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This research suggests that the lapping load for advanced ceramic balls in conventional concentric lapping could be doubled from 20N/ball to 40 N/ball without degrading the surface quality of ...
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results for ceramic balls lapping. Xiao et al. [12]reporteda new finishing method called clustered magnetorheological finishing (CMRF) for improving the surface finishing of sili …
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This paper aims to obtain the best shape accuracy evaluation algorithm for silicon nitride ceramic balls after lapping, and to extract the initial signal of the ball surface to improve the accuracy … Expand. 2 [PDF] 1 Excerpt; Save. Advances in ultra-precision machining of bearing rolling elements.
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To improve low lapping efficiency of silicon nitride balls in conventional lapping process, fixed abrasive lapping technology for ceramic balls is investigated in this paper.
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The design of an experimental eccentric lapping apparatus which allows lapping of 13.4 mm diameter ceramic ball blanks at a small batch (15 balls each time) is described. Preliminary experimental investigation on the influences of the lapping load and speed, the diamond particle sizes, the different lapping fluid mixtures has been conducted.
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1 The polishing process of advanced ceramic balls using a novel eccentric lapping machine J. Kang a,*, M. Hadfield b aSchool of Engineering and Design, Brunel University, UK b School of Design, Engineering & Computing, Bournemouth University, UK Abstract: The finishing process of advanced ceramic balls can be divided into two steps. The …
WhatsApp: +86 18221755073
The design of a novel eccentric lapping machine for finishing advanced ceramic balls is described. The kinematics of eccentric lapping is analysed and discussed, the symbolic expressions for the ball spin angular speed, ω c, ball spin angle, β, and ball circulation angular speed, ω c, are derived and numerical solutions are plotted.
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Proposal of New Lapping Method for Ceramic Balls Mesh number:# Normal loads:x10-2 N/ball Disk speed:rpm Lapping time:min Bottom disk diameter:mm Shigeki Ichikawa, Hiroshi Ona, lsamu Yoshimoto - Submitted by Akira Kobayashi (I), Faculty of Engineering, Takushoku University Received on January 5,1993 …
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Yuan J, Chen L, Zhao P, Chang M, Xing T, Lv B (2004) Study on sphere shaping mechanism of ceramic ball for lapping process. Key Eng Mater 259–260:195–200. Article Google Scholar Zhao P, Guo W, Feng M, Lyu B (2013) A novel lapping method for high precision balls based on variable-radius V-groove.
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