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.

Development of Electroplated CBN Wheel with Cemented Carbide Base for Precision Grinding of Compressor Cylinder Vane Slot

2007 ◽  
Vol 329 ◽  
pp. 495-500
Author(s):  
Hang Gao ◽  
W.G. Liu ◽  
Y.G. Zheng
Keyword(s):  
Surface Roughness ◽  
Ground Surface ◽  
Cemented Carbide ◽  
Grinding Wheel ◽  
Precision Grinding ◽  
Base Surface ◽  
Compressor Cylinder ◽  
Cbn Wheel ◽  
Micro Holes ◽  
Ground Surface Roughness

It is experimentally found that existing micro-holes or micro-concaves on the cemented carbide base surface of electroplated CBN wheel is one of important reasons to worsen the combining intensity of the electroplated abrasives layer with the grinding wheel base. It is well solved by sealing the holes or concaves with steam sealing method. Further more the electroplated CBN wheel with cemented carbide base for precision grinding of compressor cylinder vane slot is developed by optimizing the electroplating prescription and process. Productive grinding results show that the ground surface roughness, size precision and the wheel life have reached the advanced index of the same type of wheel imported.

Effects of Relative Velocity on Grinding Performances under Si Wafer Rotary Grinding

2016 ◽  
Vol 874 ◽  
pp. 395-400
Author(s):  
Jumpei Kusuyama ◽  
Takayuki Kitajima ◽  
Akinori Yui ◽  
Toshihiro Ito
Keyword(s):  
Surface Roughness ◽  
Power Consumption ◽  
Relative Velocity ◽  
Velocity Ratio ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Wafer Thickness ◽  
Grinding Conditions ◽  
The Difference ◽  
Si Wafer

For the backgrinding of semiconductor devices, a rotary grinding process is indispensable for achieving the required wafer thickness. The relative velocity between the grinding wheel and the wafer is maximum at the periphery of the wafer and minimum at the center of wafer. Generally, the grinding performances are discussed in terms of the ratio of the rotational speeds of the grinding wheel and the wafer. However, it is not possible to use this ratio to determine the grinding conditions for different wafer sizes grinding as this ratio does not show the difference in relative velocity. Therefore, a new relative velocity ratio was defined in this study. Then, the Si wafer grinding was performed to investigate the effect of the surface roughness and the power consumption of the grinding wheel spindle on the relative velocity ratio.

Researches on Effect of Impact Micro-Damages in Contact Layer on Machinability in Quick-Point Grinding

2008 ◽  
Vol 389-390 ◽  
pp. 229-234 ◽  
Author(s):  
Shi Chao Xiu ◽  
Suo Xian Yuan ◽  
Guang Qi Cai
Keyword(s):  
Surface Roughness ◽  
Strain Rate ◽  
Ground Surface ◽  
Dynamic Strength ◽  
Contact Layer ◽  
Grinding Process ◽  
Impact Process ◽  
Pile Up ◽  
Ground Surface Roughness ◽  
The Impact

Due to the high grinding speed and the less contact length, there is the super high material strain rate in the contact layer during quick-point grinding process. Based on the principle of micro-damages mechanics, it is the impact process between the workpiece and the grits on the wheel in the process. The weakening effects of the super high strain rate caused by the mechanical impact micro-damages and the adiabatic shearing damage can lower the dynamic strength of the material in contact layer and the micro-plastic pile-up deformation on the ground surface in the process. Therefore, it is possible to improve the surface integrity of the workpiece since the materials removal mechanism is changed in quick-point grinding process. In this paper, the impact performances and the model of quick point grinding process were studied. Based on the above, the model of the ground surface roughness related to the plastic pile-up deformation was established. The effects of the strain rate on the ground surface roughness and the materials removal ratio were analyzed. In addition, the grinding experiment was performed to testify such investigations. It is indicated that quick-point grinding is an impact process assuredly during the removing material process.

Effect of the Grain Depth of Cut on Cross Sectional Profile - Theoretical Analysis of Ground Surface Roughness

2012 ◽  
Vol 565 ◽  
pp. 28-33
Author(s):  
Nobuhito Yoshihara ◽  
Hiroaki Murakami ◽  
Naohiro Nishikawa ◽  
Masahiro Mizuno ◽  
Toshirou Iyama
Keyword(s):  
Surface Roughness ◽  
Ground Surface ◽  
Depth Of Cut ◽  
Cross Sectional ◽  
Grinding Conditions ◽  
Cross Sectional Profile ◽  
Fundamental Research ◽  
Sectional Profile ◽  
Ground Surface Roughness ◽  
The Relationship

Roughness is important criterion of ground surface. When the surface roughness is demanded to be smooth, it is required to make the grinding conditions optimum. To optimize the grinding conditions, relationship between grinding conditions and ground surface roughness must be known. Therefore, it has been attempted to reveal the effect of grinding conditions on the roughness of ground surface over the years. From previous researches, it becomes possible to estimate the ground surface roughness with statistical grinding theory. However, there are some parameters, such as wheel depth of cut and distribution of abrasive grain, are not factored in the theory. In this paper, fundamental research on cross sectional profile is carried out to consider the relationship between the wheel depth of cut and ground surface roughness.

Experimental Investigation on Effects of Depth of Cut on Micro-Geometric Properties in Quick-Point Grinding

2007 ◽  
Vol 359-360 ◽  
pp. 103-107
Author(s):  
Shi Chao Xiu ◽  
Chang He Li ◽  
Guang Qi Cai
Keyword(s):  
Surface Roughness ◽  
Point Contact ◽  
Ground Surface ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Abrasive Wheel ◽  
Geometric Properties ◽  
Edge Contact ◽  
Contact Width ◽  
Ground Surface Roughness

Quick-point grinding is used to machine the round surface with super abrasive wheel at high grinding speed. Because it is point contact between the grinding wheel and the workpiece due to the point grinding angles in the process, the grinding model is different from the conventional cylindrical grinding in theory. Especially, the edge contact width between the wheel and the workpiece is not always equal to the thickness of the wheel, but rests with the depth of cut and the grinding angles greatly. The depth of cut has the effects on the micro-geometric properties especially the ground surface roughness by means of the variations of the edge contact width, the grinding force and heat in the process. Based on the theoretical studies on the surface roughness, the quick-point grinding experiments and the measures for the surface roughness were performed at different depth of cut. The effective mechanism of the depth of cut on the ground surface roughness was analyzed deeply. Some conclusions to influence surface roughness were also gained.

scholarly journals Effect of the Abrasive Grain Distribution on Ground Surface Roughness

2022 ◽  
Vol 16 (1) ◽  
pp. 38-42
Author(s):  
Nobuhito Yoshihara ◽  
◽  
Haruki Takahashi ◽  
Masahiro Mizuno
Keyword(s):  
Surface Roughness ◽  
Theoretical Analysis ◽  
Grain Shape ◽  
Ground Surface ◽  
Clear Understanding ◽  
Abrasive Grain ◽  
Grinding Conditions ◽  
Grain Distribution ◽  
Ground Surface Roughness ◽  
The Relationship

In order to reduce the grinding surface roughness, it is necessary to optimize the grinding conditions; this requires clear understanding of the relationship between the grinding conditions and ground surface roughness. Therefore, various studies have been carried out over the decades on the ground surface roughness and have proposed statistical grinding theory to define the relationship between the grinding conditions and ground surface roughness. However, the statistical grinding theory does not consider a few grinding conditions such as abrasive grain shape and distribution of abrasive grain, which affect the ground surface roughness. In this study, we construct a statistical grinding theory that considers the effect of abrasive grain distribution and improves the accuracy of the theoretical analysis of the ground surface roughness.

scholarly journals Investigation of the Effect of Vibration Characteristics on the Grinding Performance of Aero-Engine Blade Tip

2021 ◽  
Author(s):  
Wei Li ◽  
Qidi Chen ◽  
Jian Wu ◽  
Mingjia Liu ◽  
Yinghui Ren ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Quality ◽  
Great Influence ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Aero Engine ◽  
Engine Blade ◽  
Blade Tip ◽  
The Difference

Abstract The machining quality of the blade tip has a great influence on the service performance and life of the aero-engine blade. The recent paper investigates the effect of vibration during the grinding process of the GH4169 nickel-based superalloy blade tip. Moreover, this paper proposes a theoretical model to link the unbalance of the grinding wheel, the vibration, and the surface topography characteristics of the blade. The results show that the blade vibration during grinding and the resulting non-linear change of the grinding depth could reduce the surface quality of the blade tip, and lead to differences in the surface quality of the blade tip in different areas, where the surface roughness in the entry area zone I is the largest, in the exit area zone III is the second largest, and the intermediate area zone III is the smallest. Grinding depth has a greater impact on the difference of the surface quality in the blade tip grinding process, especially when the grinding depth is greater than 4 μm, the difference of surface roughness increases significantly. On the other hand, the feed rate has little effect on the difference in surface quality. Adding damping block can reduce the surface roughness of the blade tip, however, it does not reduce the difference in surface quality.

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