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

2005 ◽  
Vol 45 (11) ◽  
pp. 1321-1328 ◽  
Author(s):  
T.A. Nguyen ◽  
D.L. Butler
Keyword(s):  
Grinding Wheel ◽  
Grinding Process ◽  
Precision Grinding ◽  
Wheel Surface

scholarly journals Evaluation of the Relationship Among Dressing Conditions Using Prismatic Dresser, Dressing Resistance, and Grinding Characteristics

2022 ◽  
Vol 16 (1) ◽  
pp. 12-20
Author(s):  
Gen Uchida ◽  
Takazo Yamada ◽  
Kouichi Ichihara ◽  
Makoto Harada ◽  
Tatsuya Kohara ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Condition ◽  
Ground Surface ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Practical Application ◽  
Wheel Surface ◽  
The Difference ◽  
Ground Surface Roughness ◽  
The Relationship

In the grinding process, the grinding wheel surface condition changes depending on the dressing conditions, which affects the ground surface roughness and grinding resistance. Several studies have been reported on the practical application of dressing using prismatic dressers in recent years. However, only a few studies that quantitatively evaluate the effects of differences in dressing conditions using prismatic dresser on the ground surface roughness and grinding resistance have been reported. Thus, this study aims to evaluate quantitatively the effect of the difference in dressing conditions using the prismatic dresser on the ground surface roughness and grinding resistance by focusing on the dressing resistance. In the experiment, dressing is performed by changing the dressing lead and the depth of dressing cut with a prismatic dresser, and the ground surface roughness and grinding resistance are measured. Consequently, by increasing the dressing lead and the depth of dressing cut, the ground surface roughness increased, and the grinding resistance decreased. This phenomenon was caused by the increase in dressing resistance when the dressing lead and the depth of dressing cut were increased, which caused a change in the grinding wheel surface condition. Furthermore, the influence of the difference in dressing conditions using the prismatic dresser on the ground surface roughness and grinding resistance can be quantitatively evaluated by using the dressing resistance.

Virtual Truing and Dressing of Grinding Wheel

2008 ◽  
Vol 389-390 ◽  
pp. 362-367 ◽  
Author(s):  
Zbigniew M. Bzymek ◽  
Glenn M. Duzy ◽  
Richard B. Mindek
Keyword(s):  
Grinding Wheel ◽  
Grinding Process ◽  
Rotational Axis ◽  
Wheel Surface ◽  
Cutting Surface ◽  
Surface Replica ◽  
Process Prediction ◽  
Final Profile

Truing and dressing are essential processes of grinding wheel preparation. They make the wheel geometry true with respect to its rotational axis and its cutting surface sharp. These factors significantly influence the quality of the final profile and surface produced from the grinding process. Prediction of the optimum wheel surface for grinding, defined as one which produces an accurate profile and cuts most efficiently can greatly minimize the time to optimize grinding wheel performance. This paper describes virtual dressing and truing operations, takes under account vibration of the dressing apparatus and shows how to generate wheel surface replica under different conditions.

Development of Three-Dimensional Measurement System of a Grinding Wheel Surface with Image Processing

2011 ◽  
Vol 325 ◽  
pp. 294-299 ◽  
Author(s):  
Akihiro Sakaguchi ◽  
Tomoyuki Kawashita ◽  
Shuji Matsuo
Keyword(s):  
Image Processing ◽  
Measurement System ◽  
Three Dimensional ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Wheel Surface ◽  
Dimensional Measurement ◽  
Abrasive Grains ◽  
Three Dimensional Measurement ◽  
The One

Grinding process is a very efficient machining technology because innumerable abrasive grains are fixed on the surface of grinding wheel. Especially, the distribution and shape of cutting edges which directly affect grinding process have a big influence on accuracy. Thus, it is very important to measure a wheel surface topography from a viewpoint of evaluating the wheel life and the performance and a relation between the one and the roughness. In this study, a three-dimensional measurement system of a grinding wheel surface with image processing is developed. In this system, the distribution and height of cutting edges are analyzed because only cutting edges can be selected from among all abrasive grains.

Kinematics Simulation of Grinding Process Based on Virtual Wheel Model and Micro-Cutting Analysis

2009 ◽  
Author(s):  
Xuekun Li ◽  
Yiming Kevin Rong
Keyword(s):  
Surface Condition ◽  
Machining Process ◽  
Iteration Step ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Wheel Surface ◽  
Grinding Processes ◽  
Kinematics Simulation ◽  
Wheel Model ◽  
Grinding Conditions

Grinding is a special machining process with large number of parameters influencing each other. Any grinding process involves six basic microscopic wheel-workpiece interaction modes in terms of grain cutting, plowing, and sliding, as well as bond-workpiece friction, chip-workpiece friction, and chipbond friction. And quantification of all the 6 modes immensely enhances understanding and managing of the grinding processes. In this paper, the kinematics simulation is presented to imitate the grinding wheel surface moving against the workpiece under specified grinding conditions. The grinding wheel surface is imported from the fabrication analysis based grinding wheel model of previous work. During each simulation iteration step, it provides the number of contacting grains, contact cross-section area for each grain, and resultant workpiece surface condition. Through retrieving the specific force value from the single grain cutting simulation, the cutting force and plowing force can be calculated. This model can also be potentially used in the time dependent behavior and thermal analysis of grinding processes.

Research of the Grinding Mode Applied by the Cranfield BoX Ultra Precision Grinding Machine

2013 ◽  
Vol 712-715 ◽  
pp. 553-558
Author(s):  
Zhuang De Jiang ◽  
Shu Ming Yang ◽  
Jin Long Wang ◽  
Guang Tao Yuan ◽  
Xing Yuan Long
Keyword(s):  
Grinding Wheel ◽  
Precision Grinding ◽  
Wheel Surface ◽  
Cutting Depth ◽  
Workpiece Surface ◽  
Ultra Precision ◽  
Simulation Results ◽  
Grinding Machine

In this paper an efficient grinding mode which is employed by the Cranfield BoX ultra precision grinding machine is discussed. The equations of workpiece surface and grinding wheel surface are proposed and the grinding motion is simulated via Matlab. The trajectory of the changing cutting region is discussed. The simulation results show that this grinding mode is suit to manufacture low slope surfaces. Generally, the workpiece surface is steeper, and the cutting range of the machine is smaller. The angle of the spindle inclination, the grinding wheel width and the cutting depth should be chose properly for different manufacturing capacity.

An Intelligent Prediction of Surface Roughness on Precision Grinding

2017 ◽  
Vol 261 ◽  
pp. 221-225
Author(s):  
Ning Ding ◽  
Chang Long Zhao ◽  
Xi Chun Luo ◽  
Qing Hua Li ◽  
Yao Chen Shi
Keyword(s):  
Surface Roughness ◽  
Prediction Model ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Precision Grinding ◽  
Wheel Wear ◽  
Surface Roughness Prediction ◽  
Fuzzy Neural ◽  
Roughness Prediction ◽  
Wear Condition

Precision grinding is generally used as the final finishing process, and it determines the surface quality of the machined component. It’s very difficult to achieve on-line measurement of the surface roughness. The purpose of this research was to study the surface roughness prediction and avoid the defect happening in the grinding process. A surface roughness prediction model was proposed in this paper, which presented the relationship between surface roughness and the wear condition of grinding wheel and grinding parameters. An AE sensor was used to collect the grinding signals during the grinding process to obtain the grinding wheel wear condition. Besides, a fuzzy neural network was used to obtain the prediction surface roughness. Grinding trials were performed on a high precision CNC cylindrical grinder (MGK1420) to evaluate the surface roughness prediction model. Experiment verified that the developed prediction system was feasible and had high prediction accuracy.

scholarly journals A High-Speed Precision Bearing Internal Grinding Machine and Grinding Process

2021 ◽  
Author(s):  
Zhou Chang ◽  
Qian Jia ◽  
Lai Hu
Keyword(s):  
High Speed ◽  
Engineering Application ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Guide Rail ◽  
Precision Grinding ◽  
Internal Grinding ◽  
High Speed Grinding ◽  
Bearing Raceway ◽  
Grinding Machine

Abstract In order to meet the requirement of grade P2 bearing grinding, we designed a high-speed internal grinding machine used for bearing raceway and inner circle grinding. The machine adopts T-type layout and 4-axis NC linkage. It is supported by hydrostatic pressure and driven directly by torque motor. Besides, it is equipped with high-speed hydrostatic grinding wheel spindle of ELKA. Our design includes hydrostatic workpiece shaft, hydrostatic turntable and hydrostatic guide rail. The design of this machine can ensure the high-speed grinding process and research has good engineering application value. Finally, the designed precision grinding machine is used to grind the P2 bearing raceway with reasonable processing technology.

A Three-Dimensional Model for the Surface Texture in Surface Grinding, Part 2: Grinding Wheel Surface Texture Model

2001 ◽  
Vol 123 (4) ◽  
pp. 582-590 ◽  
Author(s):  
Erik J. Salisbury ◽  
K. Vinod Domala ◽  
Kee S. Moon ◽  
Michele H. Miller ◽  
John W. Sutherland
Keyword(s):  
Surface Texture ◽  
Low Frequency ◽  
Surface Grinding ◽  
Surface Generation ◽  
Grinding Wheel ◽  
Surface Model ◽  
Grinding Process ◽  
Wheel Surface ◽  
Workpiece Surface ◽  
Frequency Components

In order to produce ground parts that have desirable surface properties, it is necessary to understand the evolution of these characteristics through the surface generation mechanisms involved in the grinding process. Since the geometry of the wheel surface, in part, determines the final workpiece geometry, the influence of the 3-D structure of a wheel surface on the final workpiece geometry is studied. In this work, a wheel surface model is developed that can be integrated with a surface grinding process model for simulating workpiece surface texture. The simulations utilizing the integrated model are used to study the workpiece surface roughness as a function of the frequency characteristics of the wheel surface. The 2-D Fourier forward and inverse transforms are employed to study and model the 3-D surface structure. In particular, the effect of specific frequency components in the wheel surface on the ground surface are analyzed. It is shown that workpiece surfaces resulting from wheel surfaces with dominant low frequency components have higher roughness, and that the low frequency components indicate a clustering of abrasive grains on the wheel surface.

A Deterministic Method to Predict Geometrical Interference between Grinding Wheel and Workpiece for Ultra-Precision Aspherical Grinding

2010 ◽  
Vol 135 ◽  
pp. 325-330
Author(s):  
Shao Hui Yin ◽  
Ze Biao Wang ◽  
Yu Wang ◽  
Feng Jun Chen ◽  
Jian Wu Yu
Keyword(s):  
Maximum Diameter ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Aspheric Surface ◽  
Precision Grinding ◽  
Deterministic Method ◽  
Aspherical Lens ◽  
Ultra Precision ◽  
Relationship Of ◽  
The Relationship

This paper reported a deterministic method to predict geometrical interferences between grinding wheel and workpiece on ultra-precision grinding for micro aspherical lens mould. An inclined axis grinding mode controlled by B axis is considered and investigated. For avoiding the interference between the grinding wheel and the workpiece, the relationship of the radius of the grinding wheel should be analyzed in the grinding process. In this paper, a geometrical mathematical model for avoiding interferences between grinding wheel and workpiece is built up, and three interference conditions are analyzed. The maximum diameter of the cylindrical grinding wheel is computed and obtained for grinding axisymmetric aspheric surface.

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