Research on grinding forces of a bionic engineered grinding wheel

2019 ◽  
Vol 48 ◽  
pp. 185-190
Author(s):  
Haiyue Yu ◽  
Weilun Zhang ◽  
Yushan Lyu ◽  
Jun Wang
Keyword(s):  
Grinding Wheel ◽  
Grinding Forces ◽  
Engineered Grinding Wheel

scholarly journals Performance of Norton Quantum Grinding Wheels

2016 ◽  
Vol 686 ◽  
pp. 125-130 ◽  
Author(s):  
Miroslav Neslušan ◽  
Jitka Baďurová ◽  
Anna Mičietová ◽  
Maria Čiliková
Keyword(s):  
Surface Roughness ◽  
Ground Surface ◽  
Bearing Steel ◽  
Grinding Wheel ◽  
Grinding Wheels ◽  
Grinding Forces ◽  
Removal Rates ◽  
Surface Burn ◽  
Conventional Grinding

This paper deals with cutting ability of progressive Norton Quantum grinding wheel during grinding roll bearing steel 100Cr6 of hardness 61 HRC. Cutting ability of this wheel is compared with conventional grinding wheel and based on measurement of grinding forces as well as surface roughness. Results of experiments show that Norton Quantum grinding wheels are capable of long term grinding cycles at high removal rates without unacceptable occurrence of grinding chatter and surface burn whereas application of conventional wheel can produce excessive vibration and remarkable temper colouring of ground surface. Moreover, while Norton Quantum grinding wheel gives nearly constant grinding forces and surface roughness within ground length at higher removal rates, conventional grinding wheel (as that reported in this study) does not.

scholarly journals Experimental Study on Grinding Force of Zirconia Ceramics in Dry/Wet Grinding Environment

2018 ◽  
Vol 198 ◽  
pp. 02004
Author(s):  
Junping Zhang ◽  
Weidong Wang ◽  
Songhua Li ◽  
Han Tao
Keyword(s):  
Grinding Force ◽  
Grinding Wheel ◽  
Feed Speed ◽  
Zirconia Ceramics ◽  
Grinding Forces ◽  
Measuring Device ◽  
Linear Speed ◽  
Wet Grinding ◽  
Dry Grinding ◽  
Force Ratio

The impacts of different linear speed of grinding wheel, grinding depth and workpiece feed speed with or without grinding fluid on grinding force were studied by plane grinding machining of zirconia ceramics. The impacts of different machining environment and grinding parameter on normal and tangential grinding forceswere studied by testing the grinding force during grinding with a force measuring device. The studies showed that the normal and tangential grinding forces decrease with the increase of the linear speed of grinding wheel and increase with the improvement of grinding depth and workpiece feed speed. The grinding depth has the greatest impacts on the normal and tangential grinding forces in dry grinding environment; while in wet grinding environment, the grinding depth exerts the greatest impacts on the normal grinding force and the linear speed of grinding wheel imposes the greatest impacts on the tangential grinding force. In addition, it was found that the normal grinding force in dry grinding is minor than that in wet grinding, that the tangential grinding force in dry grinding is greater than that in wet grinding, and that the grinding force ratio in dry grinding is lower than that in wet grinding.

scholarly journals Modeling of Vibration Condition in Flat Surface Grinding Process

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Amon Gasagara ◽  
Wuyin Jin ◽  
Angelique Uwimbabazi
Keyword(s):  
Process Model ◽  
Flat Surface ◽  
Normal Component ◽  
Cutting Speed ◽  
Surface Grinding ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Grinding Forces ◽  
Vibration Condition

This article presents a new model of the flat surface grinding process vibration conditions. The study establishes a particular analysis and comparison between the influence of the normal and tangential components of grinding forces on the vibration conditions of the process. The bifurcation diagrams are used to examine the process vibration conditions for the depth of cut and the cutting speed as the bifurcation parameters. The workpiece is considered to be rigid and the grinding wheel is modeled as a nonlinear two-degrees-of-freedom mass-spring-damper oscillator. To verify the model, experiments are carried out to analyze in the frequency domain the normal and tangential dynamic grinding forces. The results of the process model simulation show that the vibration condition is more affected by the normal component than the tangential component of the grinding forces. The results of the tested experimental conditions indicate that the cutting speed of 30 m/s can permit grinding at the depth of cut up to 0.02 mm without sacrificing the process of vibration behavior.

Effect of the Coolant Lubricant Type and Dress Parameters on CBN Grinding Wheels Performance

2009 ◽  
Vol 76-78 ◽  
pp. 163-168 ◽  
Author(s):  
Taghi Tawakoli ◽  
Abdolreza Rasifard ◽  
Alireza Vesali
Keyword(s):  
Grinding Wheel ◽  
Grinding Wheels ◽  
Grinding Forces ◽  
Workpiece Surface ◽  
Vitrified Cbn

The efficiency of using of CBN grinding wheels highly depends on the dressing process as well as on the coolant lubricant used. The Institute of Grinding and Precision Technology (KSF) investigated the performance of vitrified CBN grinding wheels -being dressed using different parameters- while using two different grinding oils and two different water-miscible coolant lubricants. The obtained results show that the performance of the vitrified CBN grinding wheels regarding the quality of the workpiece surface, the grinding forces as well as the wear of the grinding wheel, highly depend on the dressing conditions and the type of the coolant lubricant used. Compared to the water-miscible coolant lubricants, the grinding oils show better results.

Development of Three-Dimensional Dynamometer for Wafer Grinder

2010 ◽  
Vol 126-128 ◽  
pp. 361-366 ◽  
Author(s):  
Xiang Long Zhu ◽  
Ren Ke Kang ◽  
Yong Qing Wang ◽  
Dong Ming Guo
Keyword(s):  
Three Dimensional ◽  
High Sensitivity ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Performance Parameters ◽  
Grinding Forces ◽  
Grinding Method ◽  
Static Performance ◽  
Good Repeatability

Grinding forces during grinding silicon wafer have great influences on the accuracy, surface quality and grinding yield of the wafer. It is necessary to develop an accurate and reliable grinding dynamometer for measuring and monitoring the grinding process of the large and thin wafer. In this work, a new 3D (three-dimensional) grinding dynamometer using piezoelectric sensors is designed and developed, which is used for a wafer grinder based on wafer rotating grinding method. The calibrating experiments of the 3D grinding dynamometer are carried out. The FEA and modal analysis are made and compared with the results of mode testing. Furthermore, the static performance parameters of the dynamometer are obtained from the loading experiment. The experiment results indicate that the 3D grinding dynamometer can measure axial, radial and tangential grinding force of grinding wheel with high sensitivity, good linearity, good repeatability and high natural frequency, and fully satisfied requirement for measuring and monitoring of the grinding force in wafer grinding process.

Effects of Rotary Dressing on Grinding Wheel Performance

1978 ◽  
Vol 100 (3) ◽  
pp. 297-302 ◽  
Author(s):  
T. Murray ◽  
S. Malkin
Keyword(s):  
Surface Roughness ◽  
Surface Finish ◽  
Direct Relationship ◽  
Grinding Wheel ◽  
Grinding Forces ◽  
Trade Off ◽  
Flat Area ◽  
Grinding Performance

An investigation is described of the effects of rotary dressing on grinding wheel performance. Grinding performance is evaluated mainly in terms of the grinding forces and surface finish. It is demonstrated that the magnitudes of the grinding forces can be attributed to differences in the size of the wear flat area obtained by the various rotary dressing conditions. For finer dresser infeeds and greater differences between the peripheral velocities of the dresser and the grinding wheel, bigger grinding forces and smoother surfaces are obtained. A direct relationship is obtained between the grinding performance and the dressing interference angle, a larger angle resulting in smaller grinding forces and rougher surfaces. This leads to a trade-off relationship between grinding forces and surface roughness which characterizes the rotary dressing process.

Fabrication of the Electroplated CBN Wheel for Cylindrical Grinding with Abrasive Phyllotactic Pattern

2014 ◽  
Vol 1077 ◽  
pp. 44-49 ◽  
Author(s):  
Zhi Zhen Liu ◽  
Jun Wang ◽  
Yu Shan Lu ◽  
Fei Ma ◽  
Long Xiang ◽  
...  
Keyword(s):  
Grinding Wheel ◽  
Research Results ◽  
Cylindrical Grinding ◽  
Cbn Wheel ◽  
Phyllotactic Pattern ◽  
Engineered Grinding Wheel

In order to obtain a electroplated CBN cylindrical grinding wheel with ordered abrasive pattern, based on the phyllotaxis theory of biology, the cylindrical grinding wheel with phyllotactic pattern and its mask were designed, this wheel was fabricated with lithography mask electroplating technology, and also some problems on processes were investigated by experiments. The research results that the ordered abrasive pattern on cylindrical grinding wheel can be realized with the help of the phyllotaxis theory and lithography mask electroplating technology, which can give some references for making this kind of the engineered grinding wheel.

Cylindrical Grinding by Structured Wheels

2016 ◽  
Vol 874 ◽  
pp. 101-108 ◽  
Author(s):  
Amir Daneshi ◽  
Bahman Azarhoushang
Keyword(s):  
Surface Roughness ◽  
Ground Surface ◽  
Promising Method ◽  
Grinding Wheel ◽  
Grinding Wheels ◽  
Grinding Forces ◽  
Cylindrical Grinding ◽  
Dry Grinding

Structuring of the grinding wheels is a promising method to reduce the forces involved in grinding, especially during dry grinding. In this paper, one of the methods of grinding wheel structuring is presented. The structuring process was modeled to find the corresponding dressing parameters for the desired structure dimensions. The cylindrical grinding operation with the structured wheels was simulated to produce a spiral free ground surface. Afterwards, the dry grinding experiments with the structured and non-structured wheels were carried out to evaluate the efficiency of the structured wheels. The results revealed that the grinding forces can be reduced by more than 50% when the grinding wheels are structured, while the surface roughness values increase by 80%.

Grinding of Carbon/Epoxy Composites Using Electroplated CBN Wheel with Controlled Abrasive Clusters

2008 ◽  
Vol 389-390 ◽  
pp. 24-29 ◽  
Author(s):  
H.P. Yuan ◽  
Hang Gao ◽  
Yong Jie Bao ◽  
Yong Bo Wu
Keyword(s):  
Epoxy Composite ◽  
Epoxy Composites ◽  
Grinding Wheel ◽  
The Novel ◽  
Grinding Wheels ◽  
Grinding Forces ◽  
Abrasive Grains ◽  
Dry Grinding ◽  
Conventional Grinding ◽  
Wheel Loading

Aiming at solving the problems of wheel loading in dry grinding of Carbon/Epoxy composite materials, a novel electroplated grinding wheel with controlled abrasive cluster was developed, in which the diameter of clusters is in Φ0.2 mm to Φ1.0 mm and the interspace between them is about 0.5 mm to 1.0 mm. A conventional electroplated grinding wheel with abrasive grains distributed randomly was fabricated in the same way. The comparison experiments involving C/E composite were conducted on a vertical spindle grinder with the novel and conventional grinding wheels. The results show that the grinding forces of novel wheel developed is more lower though little larger surface roughness, and the wheel loading phenomenon is markedly decreased compared with conventional electroplated wheel.

Multigrain Smoothed Particle Hydrodynamics and Hertzian Contact Modeling of the Grinding Force in Atherectomy

2019 ◽  
Vol 141 (4) ◽  
Author(s):  
Yihao Zheng ◽  
Yao Liu ◽  
Yang Liu ◽  
Albert J. Shih
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Cutting Forces ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Hertz Contact ◽  
Grinding Forces ◽  
Calcified Plaque ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
The Impact

This study investigated the grinding force in rotational atherectomy, a clinical procedure that uses a high-speed grinding wheel to remove hardened, calcified plaque inside the human arteries. The grinding force, wheel motion, and ground surface were measured based on a ring-shape bovine bone surrogate for the calcified plaque. At 135,000, 155,000, and 175,000 rpm wheel rotational speed, the grinding forces were 1.84, 1.92, and 2.22 N and the wheel orbital speeds were 6060, 6840, and 7800 rpm, respectively. The grinding wheel was observed to bounce on the wall of the bone surrogate, leaving discrete grinding marks. Based on this observation, we modeled the grinding force in two components: impact and cutting forces. The impact force between the grinding wheel and the bone surrogate was calculated by the Hertz contact model. A multigrain smoothed particle hydrodynamics (SPH) model was established to simulate the cutting force. The grinding wheel model was built according to the wheel surface topography scanned by a laser confocal microscope. The workpiece was modeled by kinematic-geometrical cutting. The simulation predicted a cutting force of 41, 51, and 99 mN at the three investigated wheel rotational speeds. The resultant grinding forces, combining the impact and cutting forces modeled by the Hertz contact and SPH simulation, matched with the experimental measurements with relative errors less than 10%.

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