Experimental Research on CBN Grinding Wheel Mechanical Dressing with Ultrasonic Vibration Assistance

2010 ◽  
Vol 154-155 ◽  
pp. 573-577 ◽  
Author(s):  
Guo Fu Gao ◽  
Bo Zhao ◽  
Jie Zhao ◽  
Jing Lin Tong
Keyword(s):  
Surface Topography ◽  
Ultrasonic Vibration ◽  
Experimental Research ◽  
Experimental Results ◽  
Clear Relationship ◽  
Grinding Wheel ◽  
Acoustic Parameters ◽  
Cbn Wheel ◽  
Vibration Assistance ◽  
Cbn Grinding Wheel

The experimental research on CBN grinding wheel mechanical dressing assisted by ultrasonic vibration was carried out. Experimental results showed that ultrasonic vibration dressing is capable to improve surface topography and roundness of CBN wheel as other untraditional dressing methods. Compared with traditionally mechanical dressing, the counts of static effective grains of CBN grinding wheel dressed assisted by ultrasonic vibration increased clearly and it had clear relationship with the acoustic parameters and the dressing lead. The grains had a large protrusion height and kept good integrity after ultrasonic dressing. The technology of vibration dressing is able to prepare precisely the CBN grinding wheel.

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.

Research on CBN Grinding Wheel Dressing with Ultrasonic Vibration Assistance and its Grinding Performance

2011 ◽  
Vol 175 ◽  
pp. 126-130 ◽  
Author(s):  
Guo Fu Gao ◽  
Bo Zhao ◽  
Yu Li ◽  
Jing Lin Tong
Keyword(s):  
Ultrasonic Vibration ◽  
High Speed ◽  
Optical Glass ◽  
High Speed Steel ◽  
Grinding Wheel ◽  
Cbn Wheel ◽  
Grinding Performance ◽  
Vibration Assistance ◽  
G Ratio ◽  
Cbn Grinding Wheel

The experiment of resin-bonded CBN wheel dressing using a diamond dresser assisted with longitudinal ultrasonic vibration along the direction of depth of cut was carried out and the dressing characteristics and grinding performance were discussed in the present paper. The influence of acoustic parameters on the topography of CBN wheel was studied to check the effectiveness of dressing for this method. The experimental results showed that the higher the ultrasonic frequency is, the better the wheel topography. The grinding on K9 optical glass and high speed steel has achieved higher G-ratio than that of traditionally mechanical dressed CBN grinding wheel. The ground surface of high speed steel is better than that of K9 optical glass. According to the interferometer images, it was concluded that the grinding of high speed steel was in ductile cutting regime, while removal of K9 optical glass was in brittle fracture regime.

The Design and Analysis of a Polypropylene Hub CBN Wheel to Suppress Grinding Chatter

1999 ◽  
Vol 121 (1) ◽  
pp. 28-31 ◽  
Author(s):  
D. M. McFarland ◽  
G. E. Bailey ◽  
T. D. Howes
Keyword(s):  
Forced Vibration ◽  
Grinding Wheel ◽  
Design Features ◽  
Regenerative Chatter ◽  
Cbn Wheel ◽  
Grinding Chatter ◽  
Design Requirements ◽  
Cbn Grinding Wheel

This research investigated the addition of flexibility into a CBN grinding wheel to suppress regenerative chatter, and illustrates some design features that should be present in such a wheel. Flexibility was added by replacing the hub of an aluminumhub CBN grinding wheel with polypropylene, decreasing the bulk stiffness to approximately 12 percent of its original value. Experiments showed that the modified wheel met the design requirements and suppressed chatter, but exhibited increased forced vibration at two frequencies. When the polypropylene between the flanges was replaced by an aluminum insert, one forced vibration disappeared. There is evidence that such a flexible wheel with a homogeneous rim would outperform a standard aluminum hub wheel.

scholarly journals Effect of laser-assisted ultrasonic vibration dressing parameters of a cubic boron nitride grinding wheel on grinding force, surface quality, and particle morphology

2021 ◽  
Vol 60 (1) ◽  
pp. 691-701
Author(s):  
Zhibo Yang ◽  
Wang Sun ◽  
Dongyu He ◽  
Daocheng Han ◽  
Wei Wang ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Surface Quality ◽  
Ultrasonic Vibration ◽  
Process Parameters ◽  
Cubic Boron Nitride ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Abrasive Particles ◽  
Dressing Force ◽  
Cbn Grinding Wheel

Abstract In this article, the laser-assisted ultrasonic vibration dressing technique was applied to the cubic boron nitride (CBN) grinding wheel to study the effect of various process parameters (namely, laser power, dressing depth, feed rate, and grinding wheel speed) on the grinding force, surface quality, and morphological evolution of CBN abrasive particles. The results showed that abrasive particles’ morphology mainly undergoes micro-crushing, local crushing, large-area crushing, macro-crushing, and other morphological changes. The dressing force can be effectively reduced by controlling the dressing process parameters. Besides, grinding tests are performed on the grinding wheel after dressing to reveal specimens’ surface quality. Excellent grinding characteristics and grinding quality of the grinding wheel were obtained by the proposed technique with the optimized process parameters.

Porous Composite-Bonded CBN Grinding Wheel with Alumina Bubbles

2012 ◽  
Vol 565 ◽  
pp. 46-51 ◽  
Author(s):  
Z.Z. Chen ◽  
Wen Feng Ding ◽  
Jiu Hua Xu ◽  
C.J. Song ◽  
Y.C. Fu ◽  
...  
Keyword(s):  
Bending Strength ◽  
Sintering Temperature ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Grinding Temperature ◽  
Porous Composite ◽  
Cbn Wheel ◽  
Regular Shape ◽  
New Type ◽  
Cbn Grinding Wheel

Fabrication experiments of porous composite-bonded CBN wheels were conducted using alumina (Al2O3) bubbles, CBN grains, Cu-Sn-Ti alloy and graphite particles. Influence of sintering parameters and porosity on the bending strength of the CBN composite blocks was measured and analyzed. Dressing and grinding practice was carried out. The results show that the optimal sintering temperature of the CBN composite blocks is 880°C. When the porosity of composite blocks is 8-45 %, the strength reaches 51-103 MPa. Regular shape of the pores is obtained after dressing. Both the grinding force and grinding temperature of the composite-bonded CBN wheel are lower than that of the vitrified one under the same grinding condition, which indicates the better grinding performance of the new-type porous composite-bonded CBN wheel.

2616 Investigation of Ultrasonic Grinding : Effects of Ultrasonic Vibration in Truing of Small CBN Grinding Wheel

2005 ◽  
Vol 2005.4 (0) ◽  
pp. 69-70 ◽  
Author(s):  
Mitsuyoshi NOMURA ◽  
Yongbo WU ◽  
Masana KATO ◽  
Toru TACHIBANA ◽  
Tsunemoto KURIYAGAWA
Keyword(s):  
Ultrasonic Vibration ◽  
Grinding Wheel ◽  
Ultrasonic Grinding ◽  
Cbn Grinding Wheel

An Investigation into Integrate the Surface Hardening with the Grinding Precision Finishing

2009 ◽  
Vol 407-408 ◽  
pp. 560-564
Author(s):  
Ya Li Hou ◽  
Chang He Li ◽  
Yu Cheng Ding
Keyword(s):  
Surface Hardening ◽  
Cubic Boron Nitride ◽  
Experimental Results ◽  
Grinding Wheel ◽  
Work Piece ◽  
Surface Layers ◽  
Treatment Technology ◽  
Dry Grinding ◽  
Cbn Grinding Wheel ◽  
Grinding Hardening

The grinding hardening is a new surface heat treatment technology using grinding heat in which induce martensitic phase transformation in the surface layers of annealed or tempered steels to achieve surface strengthening processes and integrate the surface hardening process with the grinding precision machining. In the paper, a thermal model to describe this process has been presented from the thermal partition modeling and has been used to predict subsurface time–temperature profiles in the dry cylindrical grinding crankshaft using cubic boron nitride (CBN) wheels. The grinding hardening experiment was carried out in precision cylindrical grinder M1420E, using work-piece material 42CrMo4 and CBN grinding wheel under dry grinding condition. The experimental results showed the theoretical model is agreement with experimental results and the model can well forecast the grinding hardening depths.

Ultrasonic Dressing of Grinding Wheel and Its Influence on Grinding Quality

2006 ◽  
Vol 304-305 ◽  
pp. 62-65 ◽  
Author(s):  
Feng Jiao ◽  
Bo Zhao ◽  
Xun Sheng Zhu ◽  
Q.T. Fan
Keyword(s):  
Surface Topography ◽  
Physical Model ◽  
Ultrasonic Vibration ◽  
Single Point ◽  
Ground Surface ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Dressing Method

Being a key step in grinding process, dressing of grinding wheel influences the whole grinding results, especially grinding quality. Because of its good dressing effect, a new dressing method assisted by ultrasonic vibration attracted researchers’ attention. In this paper, on the basis of the researches on dressing with single-point diamond dresser, physical model of ultrasonic dressing of grinding wheel were established. According to the physical model and the SEM photos of grinding wheel’s surface topography, the mechanism of ultrasonic dressing was brought to light. Through contrast experiments, based on roughness and micro-feature of the ground surface, the influence of ultrasonic dressing on grinding quality was researched.

The Study on Ductile Removal Mechanisms of Ultrasonic Vibration Grinding Nano-ZrO2 Ceramics

2006 ◽  
Vol 304-305 ◽  
pp. 171-175 ◽  
Author(s):  
Bo Zhao ◽  
Yan Wu ◽  
C.S. Liu ◽  
A.H. Gao ◽  
Xun Sheng Zhu
Keyword(s):  
Ultrasonic Vibration ◽  
Processing Parameters ◽  
Experimental Results ◽  
Engineering Ceramic ◽  
Removal Mechanisms ◽  
Ultrasonic Grinding ◽  
Material Coefficient ◽  
Vibration Assistance ◽  
The Common ◽  
Ductile Removal

On the basis of analyzing the brittleness, ductileity, and the removal mechanisms of the^nano-ZrO2 Ceramics, the critical ductile grinding depth formula of the nano-ceramics was established. Due to superductileity of the nano-ZrO2 ceramics, it couldn’t apply the formula of the common engineering ceramic material according to experimental results. The value of material coefficient ζ has relations with not only the material characteristics but also the processing methods and the processing parameters. It was proved that ζ has great effects on the accuracy of theoretical calculation. Experimental results showed that the critical ductility grinding depth of the nano-ZrO2 ceramics is up to 12 µm in common grinding methods, while in ultrasonic grinding is up to 20µm. The grinding chips with and without ultrasonic vibration assistance were discussed.

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