Experimental Study of Optical Glass on Ultrasonic Assisted Grinding Process

2013 ◽  
Vol 433-435 ◽  
pp. 1999-2002
Author(s):  
Xin Yu Liu ◽  
Li Fen Hou ◽  
Ren Ping Zou
Keyword(s):  
Surface Roughness ◽  
Optical Glass ◽  
Grinding Force ◽  
Grinding Process ◽  
Ultrasonic Assisted Grinding ◽  
Force Increase ◽  
Experiment Method ◽  
Ultrasonic Assisted ◽  
Conventional Grinding ◽  
Single Factor Experiment

The mechanism of ultrasonic assisted grinding is presented. Single factor experiment method was used to conduct experiments in order to reveal the effect of different grinding parameters (including feed rate, spindle speed, grinding depth) on surface roughness and grinding force of optical glass in ultrasonic assisted grinding and conventional grinding. The experiment data wss analyzed and it shows that the surface roughness and tangential grinding force decrease while the axial grinding force increase in ultrasonic assisted grinding process than that in conventional grinding process.

Grinding Force and Surface Roughness in Ultrasonic Assisted Grinding of SiC Ceramics with Diamond Grinding Wheel

2013 ◽  
Vol 797 ◽  
pp. 234-239 ◽  
Author(s):  
Li Fei Liu ◽  
Fei Hu Zhang ◽  
Chun Hui Li ◽  
Jiang Chen ◽  
Min Hui Liu
Keyword(s):  
Surface Roughness ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Diamond Grinding Wheel ◽  
Ultrasonic Assisted Grinding ◽  
Diamond Grinding ◽  
Sic Ceramics ◽  
Force Ratio ◽  
Ultrasonic Assisted ◽  
Conventional Grinding

In this paper, experiments are conducted to study the characters of Ultrasonic Assisted Grinding (UAG) and Conventional Grinding (CG), diamond grinding wheel is used in experiments, grinding forces and surface roughness are measured in both UAG and CG. The effects of different parameters on grinding force, surface roughness and force ratio are discussed. The results show that the grinding force and surface roughness in UAG is smaller than those in CG. The force ratio in UAG is lower than that in CG, which reveals that the grinding wheel has a good wear-resistant property in UAG process.

The Influence of Amplitude on Grinding Force and Surface Roughness in Ultrasonic Assisted Grinding of K9 Glass

2014 ◽  
Vol 1017 ◽  
pp. 741-746
Author(s):  
Fei Fei Zheng ◽  
Fu Jian Ma ◽  
Yi Dan Wang ◽  
Zhi Gang Dong ◽  
Ren Ke Kang
Keyword(s):  
Surface Roughness ◽  
Significant Influence ◽  
Vibration Amplitude ◽  
Grinding Force ◽  
Machining Process ◽  
Grinding Process ◽  
Ultrasonic Assisted Grinding ◽  
Ultrasonic Assisted ◽  
Promising Solution ◽  
K9 Glass

Ultrasonic assisted grinding (UAG) has been a promising solution for the machining of brittle materials. The vibration amplitude in UAG has significant influence on the machining process. In this paper, the experiments which apply UAG process on K9 glass were conducted to investigate the effect of amplitude upon grinding force and surface roughness. Theoretical calculation was done to explain the phenomenon observed and to analyze how vibration affects the grinding process. The conclusion is reached that the vibration amplitude should be cogitatively set to achieve better surface quality while realizing the reduction of the grinding force.

Experimental Research on Surface Roughness of Ultrasonic Assisted Grinding in Face Grinding Process

2012 ◽  
Vol 565 ◽  
pp. 154-159 ◽  
Author(s):  
Fei Hu Zhang ◽  
L.F. Liu ◽  
Chun Hui Li
Keyword(s):  
Surface Roughness ◽  
Experimental Research ◽  
Feed Rate ◽  
Vibration Amplitude ◽  
Grinding Process ◽  
Ultrasonic Assisted Grinding ◽  
Ultrasonic Assisted ◽  
Conventional Grinding ◽  
Face Grinding ◽  
K9 Glass

In this paper, the principle of ultrasonic assisted grinding is introduced. Experiments have been done to reveal the effect of different parameters(including feed rate, spindle speed, grinding depth, vibration amplitude on surface roughness of K9 glass both in ultrasonic assisted grinding and conventional grinding. The experiment results show that in face grinding process, the surface roughness of ultrasonic assisted grinding is worse than that of conventional grinding.

Experimental Research on Surface Roughness of Ultrasonic Assisted Grinding on 7075 Aluminum Alloy

2021 ◽  
Vol 1047 ◽  
pp. 62-67
Author(s):  
Shen Wang ◽  
Le Tong ◽  
Guang Jun Chen ◽  
Mao Xun Wang ◽  
Bin Dai ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Aluminum Alloy ◽  
Processing Parameters ◽  
7075 Aluminum Alloy ◽  
Machined Surface ◽  
Ultrasonic Assisted Grinding ◽  
Great Performance ◽  
Ultrasonic Assisted ◽  
Conventional Grinding ◽  
Micro Morphology

7075 aluminum alloy is widely used due to its great performance, especially in aerospace area. In this paper, ultrasonic-assisted grinding technology is used to process 7075 aluminum alloy. The data is obtained through experiments, and the surface roughness and morphology of ultrasonic assisted grinding and conventional grinding under different spindle speeds, feed rates, and amplitudes are analyzed. Research has found that the increase in spindle speed and amplitude will improve the quality of the machined surface and reduce the surface roughness by 82.1% and 36%. However, with the increase of feed rate, the surface quality decreased significantly, and the surface roughness increased by 55.6%. The surface micro-morphology of the machined workpiece is observed, and the effects of different processing parameters on the surface micro-morphology are obtained.

Experimental Study on the Mechanism of Axial Ultrasonic-Assisted Grinding

2012 ◽  
Vol 490-495 ◽  
pp. 2449-2453
Author(s):  
S.X. Yuan ◽  
M. Xiao
Keyword(s):  
Experimental Study ◽  
Grinding Force ◽  
Paper Analysis ◽  
Kinematics Model ◽  
Ultrasonic Assisted Grinding ◽  
Ultrasonic Assisted ◽  
Conventional Grinding

This paper analysis the mechanism of axial ultrasonic-assisted grinding(AUAG), by establishing the kinematics model of a single grit; The reason why AUAG forces are more lower than conventional grinding(CG) forces is presented, and the experiments of the grinding force in AUAG comparison with CG were carried out. The results indicate that the grinding force of the superalloy in AUAG is about 40% to 50% less than that in CG.

Experimental Study on Ultrasonic Assisted Grinding of C/SiC Composites

2014 ◽  
Vol 620 ◽  
pp. 128-133 ◽  
Author(s):  
Kai Ding ◽  
Yu Can Fu ◽  
Hong Hua Su ◽  
Tao He ◽  
Xi Zhai Yu ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Brittle Fracture ◽  
Grinding Force ◽  
Specific Grinding Energy ◽  
Ultrasonic Assisted Grinding ◽  
Ultrasonic Assisted ◽  
Conventional Grinding ◽  
Carbide Matrix ◽  
Sic Composites ◽  
Material Removal Mode

In the present work, ultrasonic assisted grinding (UAG) and conventional grinding (CG, without ultrasonic) tests of Carbon fiber reinforced silicon carbide matrix (C/SiC) composites were conducted. In addition, analysis was done by comparing the machining quality, grinding force, and specific grinding energy between the two processes. The results showed that material removal mode of carbon fiber both in CG and UAG were brittle fracture, and fracture size had no obvious difference. Compared with CG, brittle fracture area of SiC increased during UAG. In comparison with CG, the normal grinding force and tangential grinding force for UAG were reduced maximally by 45%, 39% respectively of those for CG. Accordingly, specific grinding energy was also reduced by UAG. Therefore, UAG can improve the grinding performance of C/SiC composites significantly.

Elliptical Ultrasonic Assisted Grinding (EUAG) of Monocrystal Sapphire – Surface Formation Characteristics

2010 ◽  
Vol 126-128 ◽  
pp. 367-372 ◽  
Author(s):  
Zhi Qiang Liang ◽  
Xi Bin Wang ◽  
Yong Bo Wu ◽  
Wen Xiang Zhao
Keyword(s):  
Surface Roughness ◽  
High Performance ◽  
Depth Of Cut ◽  
Surface Formation ◽  
Work Surface ◽  
Ultrasonic Assisted Grinding ◽  
Bending Mode ◽  
Ultrasonic Assisted ◽  
Conventional Grinding ◽  
Elliptical Motion

This study investigates surface formation characteristics in elliptical ultrasonic assisted grinding (EUAG) of monocrystal sapphire. During EUAG process, the workpiece is imposed to ultrasonically vibrate in two directions, i.e., vertical and parallel to work-surface, by using an elliptical ultrasonic vibrator. In our previous work, the vibrator has been produced by bonding a piezoelectric ceramic device (PZT) on a metal elastic body. When two alternating current voltages with a phase difference are applied to the PZT at the same frequency that is close to the resonant frequency of the longitudinal and bending mode of the vibrator, two dimensional ultrasonic vibrations are generated simultaneously, resulting in an elliptical motion on the end face of the vibrator. In this paper, to clarify the work-surface formation characteristics in EUAG of sapphire material, grinding experiments are carried out involving sapphire substrate. In experiments, work-surface roughness is measured, and the ground work-surface morphology is examined by scanning electron microscope (SEM). The experimental results are summarized as: (1) Compared with conventional grinding (CG), the elliptical vibration leads to a decrease of surface roughness up to 25% in EUAG; (2) The surface roughness has a monotonously increasing trend with the increasing wheel depth of cut in both EUAG and CG, but has little variation with the worktable feed rate. As the wheel speed increases, the surface roughness decreases until it reaches a minimum, and then increases in a monotonous trend in both EUAG and CG; (3) The surface quality in EUAG has a significant improvement, and it is prone to achieve the ductile regime grinding of sapphire compared with CG. These indicate that the elliptical ultrasonic assisted grinding is an efficient technique for high performance machining of monocrystal sapphire.

An Experimental Investigation of Ultrasonic Assisted Grinding in DOE Approach

2012 ◽  
Vol 565 ◽  
pp. 129-134 ◽  
Author(s):  
Kyeong Tae Kim ◽  
Yun Hyuck Hong ◽  
Kyung Hee Park ◽  
Young Jae Choi ◽  
Seok Woo Lee ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Ultrasonic Vibration ◽  
Feed Rate ◽  
Rotation Speed ◽  
Grinding Force ◽  
Machining Parameters ◽  
Grinding Forces ◽  
Ultrasonic Assisted Grinding ◽  
Ultrasonic Assisted ◽  
Conventional Grinding

In this work, grinding test was performed in terms of machining parameters, such as grinding speed, feed rate, etc., in order to study effect of ultrasonic vibration in grinding. The design of experiment (DOE) approach was used for an optimal condition of ultrasonic assisted grinding, which can minimize the grinding forces. In DOE, ultrasonic amplitude power, feed rate, and rotation speed of spindle were chosen as the major machining factors. The grinding forces were measured and compared between the conventional grinding and ultrasonic assisted grinding. From the experiment, it was found that the grinding forces decreased as the ultrasonic vibration power and the rotation speed of spindle increased while the grinding force was reduced as the feed rate increased. In addition, regression model was formulated for obtaining optimal grinding condition.

Design of Ultrasonic Horn for Grinding Using Finite Element Method

2012 ◽  
Vol 565 ◽  
pp. 135-141 ◽  
Author(s):  
Young Jae Choi ◽  
Kyung Hee Park ◽  
Yun Hyuck Hong ◽  
Kyeong Tae Kim ◽  
Seok Woo Lee ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Grinding Force ◽  
Machining Performance ◽  
Grinding Forces ◽  
Ultrasonic Assisted Grinding ◽  
Ultrasonic Grinding ◽  
Ultrasonic Assisted ◽  
Conventional Grinding ◽  
Element Method

In this paper, a ultrasonic horn, which can vibrate longitudinally with a frequency of 20㎑, was designed using finite element method (FEM). And the ultrasonic horn was fabricated for ultrasonic assisted grinding. To evaluate machining performance of the fabricated ultrasonic horn, grinding test was conducted on alumina ceramic (Al2O3). In the grinding test, grinding forces was measured and compared between the conventional grinding and the ultrasonic assisted grinding. The results showed that the grinding force in the ultrasonic grinding was lowered than the conventional grindign by 3~20%.

scholarly journals Study on the Effect of Grinding Pressure on Material Removal Behavior Performed on a Self-Designed Passive Grinding Simulator

2021 ◽  
Vol 11 (9) ◽  
pp. 4128
Author(s):  
Peng-Zhan Liu ◽  
Wen-Jun Zou ◽  
Jin Peng ◽  
Xu-Dong Song ◽  
Fu-Ren Xiao
Keyword(s):  
Residual Stress ◽  
Surface Roughness ◽  
Service Life ◽  
Material Removal ◽  
Removal Rate ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Grinding Temperature ◽  
Grinding Efficiency

Passive grinding is a new rail grinding strategy. In this work, the influence of grinding pressure on the removal behaviors of rail material in passive grinding was investigated by using a self-designed passive grinding simulator. Meanwhile, the surface morphology of the rail and grinding wheel were observed, and the grinding force and temperature were measured during the experiment. Results show that the increase of grinding pressure leads to the rise of rail removal rate, i.e., grinding efficiency, surface roughness, residual stress, grinding force and grinding temperature. Inversely, the enhancement of grinding pressure and grinding force will reduce the grinding ratio, which indicates that service life of grinding wheel decreases. The debris presents dissimilar morphology under different grinding pressure, which reflects the distinction in grinding process. Therefore, for rail passive grinding, the appropriate grinding pressure should be selected to balance the grinding quality and the use of grinding wheel.

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