A Study On The Lapping Of Ceramic Balls
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.
Advances in Mechanical Engineering 2021, Vol. 13(7) …
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 …
Lapping Machining of High-Speed and High-Precision Ceramic Bearing Balls
In resent years, ceramic balls have been applied into precision bearings and other parts far and wide because of its advantages in light weight, high hardness, abrasive resistance, high-temperature resistance, corrosion resistance, little heat expansion coefficient and so on. The high-precision ceramic balls are machined by lapping usually, and the method …
A study on the lapping of ceramic balls
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 …
Theoretical and experimental study of ceramic balls lapping …
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 …
The polishing process of advanced ceramic balls using a …
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 …
Lapping and Polishing Basics
Lapping and polishing is a process by which material is precisely removed from a workpiece (or specimen) to produce a desired dimension, surface finish, or shape. The process of lapping and polishing materials has been applied to a wide ... Polishing with a lapping plate is a common process used in the case of metals and hard ceramic type ...
Study on Fixed Abrasive Lapping Technology for Ceramic Balls
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. Diamond abrasives and photosensitive resin are used to fabricate the fixed abrasive plate. The lapped ball surface is observed with microscopy to identify the dominant wear …
A novel eccentric lapping machine for finishing advanced …
A brief review of the methods for finishing ceramic balls is presented. The design of a novel eccentric lapping machine for finishing advanced ceramic balls is described. The …
Simulation of a ceramic ball lapping process under dual
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 ...
Simulation of a ceramic ball lapping process under dual …
To study the lapping process and sphere-shaping mechanism of ceramic ball under Dual Rotating Plates (DRP) lapping mode and reduce the experiment trails, a …
The polishing process of advanced ceramic balls using a …
A novel eccentric lapping machine is used for polishing hot isostatically pressed (HIPed) silicon nitride balls. In the initial polishing stage, the polishing load is demonstrated as being most influential in the reduction of surface roughness value R a.However, in the later polishing stages, the erosive process played a major role in the further reduction of R a, …
Experimental study on lapping ceramic balls with variable-radius …
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 as evaluation indicators. The signal to noise ratio (S/N) and the analysis of variance were …
Simulation of a ceramic ball lapping process under dual …
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 …
Advances in Mechanical Engineering 2021, Vol. 13(7) …
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 …
A novel eccentric lapping machine for finishing advanced ceramic balls
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.
Oscillating-plate shaping method for ceramic ball blanks
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 ...
A novel eccentric lapping machine for finishing advanced ceramic balls
DOI: 10.1243/0954405011518728 Corpus ID: 136523066; A novel eccentric lapping machine for finishing advanced ceramic balls @article{Kang2001ANE, title={A novel eccentric lapping machine for finishing advanced ceramic balls}, author={Junmo Kang and Mark Hadfield}, journal={Proceedings of the Institution of Mechanical Engineers, Part B: …
Technology Precision Machining of Ceramic Balls in the V …
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 …
Bal-tec
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 …
Super Fine Finishing of Si3N4 Ceramic Ball Using Spin
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 ...
Study on the Evaluation Method of Lapping Uniformity for Ceramic Balls
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 ...
A novel eccentric lapping machine for finishing advanced ceramic balls …
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.
[PDF] The polishing process of advanced ceramic …
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 …
Study on Sphere Shaping Mechanism of Ceramic Ball for Lapping …
Sphere shaping mechanism is discussed and a new principle for lapping ceramic balls using three pads rotating independently is analyzed as well as its movement equations in the paper. During lapping process, the spin angle of ball can change from -90° to 90°, by controlling the rotating speed of pads and the ball surface can be covered …
Processing of high-precision ceramic balls with a spiral V …
Lee R, Hwang Y, Chiou Y. Lapping of ultra-precision ball surfaces. Part I: Concentric V-groove lapping system. International Journal of Machine Tools and Manufacture, 2006, 46(10): 1146–1156. Google Scholar Kang J, Hadfield M. The effects of lapping load in finishing advanced ceramic balls on a novel eccentric lapping machine.
A novel eccentric lapping machine for finishing advanced ceramic balls
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 ...
A Novel Lapping Method for High Precision Balls Based on …
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.
Study on Fixed Abrasive Lapping Technology for Ceramic Balls
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.
Shaping of Green Ceramic Balls and Precision Lapping of …
The lapping of ceramic green balls are very difficult because of causing breakage or chipping easily in lapping process. This paper deals with the experimental …