Design and Fabrication of the Superabrasive Grinding Wheel with Phyllotactic Pattern

2012 ◽  
Vol 472-475 ◽  
pp. 2354-2360 ◽  
Author(s):  
Yu Shan Lu ◽  
Cheng Yi Zhao ◽  
Jun Wang ◽  
Yan He ◽  
Zhi Hui Kou
Keyword(s):  
Experimental Results ◽  
Grinding Wheel ◽  
Wheel Surface ◽  
Work Surface ◽  
Phyllotactic Pattern ◽  
Uv Lithography ◽  
Working Surface ◽  
Abrasive Grain ◽  
Grinding Performance ◽  
Cluster Pattern

In order to achieve the controllability of the abrasive arrangement on the working surface of grinding wheel,a new kind of the superabrasive grinding wheel, which has defined abrasive grain cluster pattern, has been designed based on the phyllotaxis theory of biology, and fabricated with UV lithography method and electroplating technology. The analytical results indicate that the phyllotactic parameters influence on the abrasive arrangement configuration on the work surface of the superabrasive grinding wheel, so as to improve grinding performance of the grinding wheel, increasing the diameter of phyllotactic abrasive grain cluster and decreasing phyllotactic coefficient can increases the abrasive grain density of the surperabrasive grinding wheel surface. Electroplating experimental results show that the reasonable electroplating processes can reduce the faults of defined abrasive arrangement on the superabrasive grinding wheel surface.

Measuring Method of Distribution of Abrasive Grain Cutting Edge by Means of AE Sensors

2016 ◽  
Vol 1136 ◽  
pp. 601-605
Author(s):  
Takazo Yamada ◽  
Hwa Soo Lee ◽  
Kohichi Miura
Keyword(s):  
Measuring Method ◽  
Cutting Edge ◽  
Experimental Results ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Wheel Surface ◽  
Workpiece Surface ◽  
Abrasive Grain

In grinding process, the grinding wheel profiles are copied to workpiece surface. Therefore, the finished workpiece surface can be estimated by the grinding wheel surfaces. In this paper, new measuring method of the distribution of cutting edge in grinding wheel surface by two AE sensors is proposed. From experimental results, it is confirmed that the distribution of cutting edges in wheel surface can be measured easily by the proposed method compared to another measuring method.

Experimental Investigations on the Grinding Temperature of the Superhard Grinding Wheel with Ordering Abrasive Pattern

2015 ◽  
Vol 713-715 ◽  
pp. 90-94
Author(s):  
Long Xiang ◽  
Yu Shan Lu ◽  
Jun Wang ◽  
Zhi Zhen Liu ◽  
Shan Zhang ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Experimental Results ◽  
Experimental Investigations ◽  
Grinding Wheel ◽  
Grinding Temperature ◽  
Workpiece Surface ◽  
Phyllotactic Pattern ◽  
Grinding Parameters ◽  
Matrix Dislocation

In the area of grinding, ordering the abrasive gains is one of the key ways to improve the grinding wheel performance. In this article, the experimental investigations on the grinding temperature were carried out including using the superhard abrasive grinding wheel with phyllotactic, matrix, dislocation and disordered configuration, the temperature distribution of the grinding workpiece surface and the effects of grinding parameters on the temperature of workpiece surface have been obtained. The experimental results showed that the grinding temperature can be reduced efficiently by choicing the grinding wheel with abrasive phyllotactic pattern.

The Possibility of Dressless Restoration of Grindactivity in Dry Grinding of Carbon

2008 ◽  
Vol 389-390 ◽  
pp. 356-361 ◽  
Author(s):  
Kazuhito Ohashi ◽  
Y. Sumimoto ◽  
Y. Fujita ◽  
Hiroyuki Hasegawa ◽  
Shinya Tsukamoto
Keyword(s):  
Adhesive Tape ◽  
Hard Carbon ◽  
Wheel Surface ◽  
Removal Method ◽  
Abrasive Grains ◽  
Abrasive Grain ◽  
Grinding Performance ◽  
Dry Grinding

The grinding performance of wheel remarkably decreases by the loading of wheel surface in dry grinding of hard carbon parts. In this report, we propose the removal method of loaded carbon chips in which an adhesive tape is removed with carbon chips after putting on a loaded wheel surface by an elastic roller with the setting load . The removal characteristics are experimentally investigated by analyzing the projecting height of abrasive grains, removal force of adhesive tape and so on. The removal method results in the enough projecting height of abrasive grain.

Mathematical Model of the Grinding Force With Account for Blunting of Abrasive Grains of the Grinding Wheel

2017 ◽  
Vol 139 (12) ◽  
Author(s):  
Dmitrii V. Ardashev ◽  
Aleksandr A. Dyakonov
Keyword(s):  
Forecast Model ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Force Model ◽  
Cyclic Loads ◽  
Workpiece Material ◽  
Stochastic Nature ◽  
Abrasive Grains ◽  
Working Surface ◽  
Abrasive Grain

The paper offers a simulation model of the grinding force with account for the current condition of the grinding wheel's working surface—the value of the abrasive grain blunting area. The model of blunting area takes into account various wear mechanisms for abrasive grains: the mechanical wear is realized on the provisions of the kinetic theory of the strength of a solid subjected to cyclic loads, and the physicochemical wear is based on the intensity of interaction between the abrasive and the treated material at grinding temperatures. The offered model of the grinding force takes into account the unsteady stochastic nature of the interaction between abrasive grains of the grinding wheel and the working surface and the intensity of workpiece material deformation resistance. The model is multifactorial and complex and can be realized by supercomputer modeling. The numerical implementation of the model was performed with application of supercomputer devices engaging parallel calculations. The performed experiments on measurement of the grinding force during circular grinding have shown a 10% convergence with the calculated values. The developed grinding force model can be used as a forecast model to determine the operational functionality of grinding wheel when used in varying technological conditions.

Ultrasonic Vibration Dressing Technology on CBN Grinding Wheel and its Grinding Performance on K9 Glass

2014 ◽  
Vol 1004-1005 ◽  
pp. 1340-1343
Author(s):  
Quan Mao He ◽  
Jie Zhao ◽  
Fei Ling Shen
Keyword(s):  
Surface Morphology ◽  
Ultrasonic Vibration ◽  
Experimental Results ◽  
Grinding Wheel ◽  
Cbn Wheel ◽  
Grinding Performance ◽  
Grinding Ratio ◽  
Cbn Grinding Wheel ◽  
Morphology Characteristics ◽  
K9 Glass

CBN wheel grinding performance on K9 glass is experimentally analyzed, which is using ultrasonic vibration assisted mechanical dressing, and dressing modes have different influences on grinding performance on the basis of the grinding surface morphology characteristics of K9 glass. The experimental results show that the CBN grinding wheel of vibration dressing mode has relatively large grinding ratio compared with ordinary dressing, and its microstructure on the grinding surface is strongly influenced by dressing modes and grinding speed.

Modeling of Specific Grinding Energy Based on Wheel Topography

2011 ◽  
Vol 325 ◽  
pp. 72-78 ◽  
Author(s):  
Abdolhamid Azizi ◽  
Hamed Adibi ◽  
Seyed Mehdi Rezaei ◽  
Hamid Baseri
Keyword(s):  
Metal Removal ◽  
Unit Area ◽  
Experimental Results ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Removal Mechanism ◽  
Specific Grinding Energy ◽  
Grinding Performance ◽  
Wheel Topography ◽  
Workpiece Interaction

Grinding performance is evaluated mainly in terms of specific grinding energy. The number of active grits per unit area and their slope is considered as the two grinding wheel topographical key parameters for studying grinding performance. To provide a view on how various parameters influence specific energy and the importance of wheel topography and grit workpiece interaction, a specific grinding energy model is developed. Inputs to this model are workpiece parameters, grinding process parameters, and, in particular, the grinding wheel topographical parameters. This model has been validated by experimental results. The theoretical values considering the complexity of the grinding process reasonably compare with the experimental results. The effect of number of active grits per unit area and their slope on specific grinding energy and then metal removal mechanism is investigated. The results revealed that the number of active grits per unit area has less effect on specific grinding energy than grits slope.

Theoretical Analysis and Experimental Investigation into Hydrodynamic Pressure and Coolant Lift Force in Flood Delivery Grinding

2010 ◽  
Vol 97-101 ◽  
pp. 1836-1840
Author(s):  
Ya Li Hou ◽  
Fu Xin Yao ◽  
Chang He Li ◽  
Yu Cheng Ding
Keyword(s):  
Pressure Distribution ◽  
Contact Zone ◽  
High Performance ◽  
Fluid Pressure ◽  
Hydrodynamic Pressure ◽  
Experimental Results ◽  
Coolant Fluid ◽  
Grinding Wheel ◽  
Maximum Pressure ◽  
Work Surface

In the grinding process, conventional method of flood delivering coolant fluid by a nozzle in order to achieve high performance finishing. However, hydrodynamic fluid pressure can be generated ahead of the contact zone due to the wedge effect between wheel peripheral surface and work surface. In the paper, a theoretical hydrodynamic pressure modeling is presented for flow of coolant fluid through the grinding zone in flood delivery grinding. Moreover, coolant induced force can be calculated by integrate the hydrodynamic pressure distribution over the whole contact length. The theoretical results show that the hydrodynamic pressure was proportion to grinding wheel velocity, and inverse proportion to the minimum gap between wheel and work surface and the maximum pressure value was generated just in the minimum gap region in which higher fluid pressure gradient occuring. It can also be concluded the pressure distribution was uniform in the direction of width of wheel except at the edge of wheel because of the side-leakage. Furthermore, the hydrodynamic pressure and coolant induced force at wedge-like zone were also investigated experimentally. The experimental results show the theoretical model is agreement with experimental results and the model can well forecast hydrodynamic pressure distribution at contact zone between grinding wheel and workpiece.

The Abrasive Cut-off Operation With Oscillation

1976 ◽  
Vol 98 (2) ◽  
pp. 410-422
Author(s):  
R. Murata ◽  
M. C. Shaw
Keyword(s):  
Rotating Disk ◽  
Tangential Direction ◽  
Wheel Surface ◽  
Continuous Contact ◽  
Heat Flows ◽  
Abrasive Grains ◽  
Abrasive Grain ◽  
Grinding Performance

In the abrasive cut-off operation in which a thin rotating disk is plunged through a workpiece, chips must be stored as a grain traverses the entire width of work being ground. Also, heat flows radially inward from the wheel surface for a longer time the wider the workpiece, thus increasing the tendency to overheat the polymeric bond posts that hold the abrasive grains in place. Oscillation of the workpiece in a tangential direction tends to reduce the length of continuous contact between abrasive grain and work and significantly improves grinding performance when relatively wide workpieces are ground. This paper discusses the more important aspects of the abrasive cut-off operation with oscillation.

Simulation of the Surface Roughness by End Face Grinding Wheel with Ordered Abrasive Pattern

2015 ◽  
Vol 1095 ◽  
pp. 898-901
Author(s):  
Xing Shan Li ◽  
Mei Li Shao ◽  
Jun Wang ◽  
Yu Shan Lu
Keyword(s):  
Surface Roughness ◽  
Theoretical Basis ◽  
Grinding Wheel ◽  
Phyllotactic Pattern ◽  
Grinding Performance ◽  
Grinding Parameters ◽  
Simulation Results ◽  
Face Grinding

In order to improve the grinding performance of end face grinding wheel, the ordered theory is applied to the design of grinding wheel. Based on the track equation of the end grinding, the effects of grinding parameters on the surface roughness are studied and compared with the workpiece appearance by grinding wheel with different abrasive patterns. The simulation results show that the surface roughness values are lower by the grinding wheel with phyllotactic pattern than other patterns. It will provide theoretical basis for designing abrasive ordered pattern of grinding wheel.

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