Study on Effects of Ultrasonic Vibration on Grinding Force

2014 ◽  
Vol 532 ◽  
pp. 568-571
Author(s):  
Hong Li Zhang ◽  
Jin Huan Zhang
Keyword(s):  
Mathematical Models ◽  
Ultrasonic Vibration ◽  
Brittle Material ◽  
Grinding Force ◽  
Grinding Force Ratio ◽  
Force Ratio

The mathematical models of the dynamic grinding force and the average grinding force were established by introducing the unit grinding force Fu. And the formula of the average grinding force in the grinding zone was derived. The experiments were conducted in the traditional grinding (TG) mode and tangential ultrasonic vibration grinding (TUAG) mode. The results show that the unit grinding force in TUAG is lower than that in TG in the same machining condition; the grinding force ratio is decreased due to the tangential ultrasonic vibration of the workpiece. It is helpful to improve the machinablity of the hard-brittle material.

Study on the Cutting Deforming Force of Single Abrasive Grit for Ultrasonic Vibration Assisted Grinding along Normal Direction

2010 ◽  
Vol 102-104 ◽  
pp. 615-619 ◽  
Author(s):  
Hong Li Zhang ◽  
Jian Hua Zhang
Keyword(s):  
Cutting Force ◽  
Ultrasonic Vibration ◽  
Brittle Material ◽  
Grinding Force ◽  
Normal Direction ◽  
Kinematics Analysis ◽  
Cutting Depth ◽  
Force Ratio ◽  
Conventional Grinding ◽  
Ultrasonic Vibration Assisted Grinding

Based on the kinematics analysis and the cutting depth calculation of single abrasive grit, the mathematics models of the cutting deforming force and the average cutting deforming force were made by introducing the unit grinding force, Fu. And the formula of the average cutting force during the grinding zone was calculated. The experiments on the grinding force ratio were conducted under conventional grinding(CG) mode and normal ultrasonic vibration assisted grinding(NUAG) mode. The results showed that the unit grinding force in NUAG was lower than that in CG under the same machining condition; the grinding force ration was decreased due to the normal ultrasonic vibration of the workpiece. And it was helpful to improve the machinablity of the hard-brittle material.

scholarly journals Study on Grinding Force Ratio.

1992 ◽  
Vol 58 (550) ◽  
pp. 1993-1998
Author(s):  
Kenjiro OKAMURA ◽  
Hideyuki MIZUTANI ◽  
Masamichi SHIMIZU
Keyword(s):  
Grinding Force ◽  
Grinding Force Ratio ◽  
Force Ratio

Analysis on Grinding Force of SiCp/Al Composites Based on MATLAB

2012 ◽  
Vol 472-475 ◽  
pp. 853-856
Author(s):  
Li Shi ◽  
Li Zhou ◽  
Li Fu Xu ◽  
Lei Zhao ◽  
Shu Tao Huang
Keyword(s):  
Wavelet Analysis ◽  
Energy Distribution ◽  
High Speed ◽  
Diamond Wheel ◽  
Grinding Force ◽  
Field Frequency ◽  
Feed Velocity ◽  
Grinding Force Ratio ◽  
Standard Variance ◽  
Force Ratio

SiCp/Al composites were grinded with Diamond Wheel on high-precision machine. Acquiring grinding force signals of the experiment with High Speed Advantech PCI－1712 board. Acquired grinding force signals are analyzed in MATLAB which has mighty function disposing signals. Through analyzing the grinding force in time field, frequency field and the signals wavelet analysis for different grinding parameters, found that the feed velocity has much more influence on the grinding force, the grinding force ratio and the standard variance of the grinding force than the depth of grinding when the velocity of the Diamond Wheel is fixed. The frequency structure and energy distribution of grinding force are showed in PSD analysis. The signals are de-noised in wavelet tools. The result of the experiment indicates the grinding force increases, the grinding force ratio decreases and the standard variance of the grinding force varies complex for different material with the increasing of the velocity of the workpiece and the grinding depth.

Analysis of the Grinding Characteristics of β-Ga2O3 Crystal on Different Planes

2020 ◽  
Vol 19 (02) ◽  
pp. 235-248
Author(s):  
Hai Zhou ◽  
Jiahui Wei ◽  
Fang Song ◽  
Yongkang Li ◽  
Chuanjin Huang ◽  
...  
Keyword(s):  
Specific Energy ◽  
Grinding Force ◽  
Surface Grinding ◽  
Grinding Wheel ◽  
Experimental Conditions ◽  
Grinding Force Ratio ◽  
Force Ratio ◽  
Grinding Conditions ◽  
Grinding Machine

The (010) and (100) planes of a [Formula: see text]-Ga2O3 crystal were subjected to precision grinding tests with a resin bond diamond grinding wheel on a precision surface grinding machine. The grinding characteristics and surface grinding quality of the planes of the [Formula: see text]-Ga2O3 crystal were analyzed on the basis of grinding force, grinding force ratio, specific energy, and surface morphology. The (010) plane shows a larger grinding force and specific energy but a smaller grinding force ratio compared with the (100) plane. Under experimental conditions, the normal and tangential grinding forces of the (010) plane are 1.4–2.2 and 2.6–7.8 times that of the (100) plane, respectively. The specific energy of the (010) plane is 2.8–6.1 times that of the (100) plane, and the grinding force ratio of the (100) plane is 1.4–3.7 times that of the (010) plane. Under the same grinding conditions, the material removal methods for the two planes are evidently different. The (010) plane is mainly removed by brittle fracture and accompanied by a minimal broken area, whereas the (100) plane is mainly removed by cleavage layering and exhibits numerous block cleavage. The (100) plane is the strong cleavage surface, and the (100) plane demonstrates a higher surface roughness than the (010) plane under the same grinding conditions.

Study on Grinding Force Model in Ultrasonic Vibration Assisted Grinding for Ductile Materials

2013 ◽  
Vol 770 ◽  
pp. 207-212
Author(s):  
Yan Wang ◽  
Bin Lin ◽  
Shao Lei Wang ◽  
Xiao Yan Cao
Keyword(s):  
Ultrasonic Vibration ◽  
Removal Rate ◽  
Grinding Force ◽  
Force Model ◽  
Frequency Increase ◽  
Ductile Materials ◽  
Grinding Force Model ◽  
Force Increase ◽  
Force Ratio ◽  
Ultrasonic Vibration Assisted Grinding

Ultrasonic vibration Assisted Grinding (UAG) is an effective processingmethod for difficultmachiningmetalmaterial.This paper put forward a new model to predict the grinding force in UAG. The paper presents the abrasive grain motion equations, removal rate model,grinding force model and grinding force ratio model.According to the grinding force model, the grinding force will decrease as the spindle speed, vibration amplitude and vibration frequency increase. The grinding force increase as the grinding depth and feed rate increase.

Study on Grinding Force in Two-Dimensional Ultrasonic Grinding Nano-Ceramics

2010 ◽  
Vol 42 ◽  
pp. 204-208 ◽  
Author(s):  
Xiang Dong Li ◽  
Quan Cai Wang
Keyword(s):  
Mathematical Model ◽  
Ultrasonic Vibration ◽  
Contact Time ◽  
Reaction Force ◽  
Grinding Force ◽  
Two Dimensional ◽  
Indentation Fracture ◽  
Ultrasonic Grinding ◽  
The Impact ◽  
Ultrasonic Vibration Assisted Grinding

In this paper, the characteristic of grinding force in two-dimensional ultrasonic vibration assisted grinding nano-ceramic was studied by experiment based on indentation fracture mechanics, and mathematical model of grinding force was established. The study shows that grinding force mainly result from the impact of the grains on the workpiece in ultrasonic grinding, and the pulse power is much larger than normal grinding force. The ultrasonic vibration frequency is so high and the contact time of grains with the workpiece is so short that the pulse force will be balanced by reaction force from workpiece. In grinding workpiece was loaded by the periodical stress field, which accelerates the fatigue fracture.

Sign in / Sign up

Export Citation Format

Share Document