Application of a Floating Nozzle to Grinding Process Using an Edge of Grinding Wheel

2008 ◽  
Vol 389-390 ◽  
pp. 326-331 ◽  
Author(s):  
Shinichi Ninomiya ◽  
Fan Qiang ◽  
Toshiharu Shimizu ◽  
Manabu Iwai ◽  
Tetsutaro Uematsu ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Good Control ◽  
Surface Grinding ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Cylindrical Grinding ◽  
Edge Wear ◽  
Grinding Machine ◽  
External Cylindrical Grinding ◽  
Basic Experiments

In order to apply the floating nozzle method to an angular grinding on the external cylindrical grinding, basic experiments on V-groove grinding with the wheel edge were performed on the surface-grinding machine. The results showed that the floating nozzle method could maintain a good control of the wheel edge wear, leading to improved surface roughness compared with a conventional nozzle.

Study on the Grinding Process of Ceramic Zirconia Oxide Rod

2014 ◽  
Vol 575 ◽  
pp. 121-127
Author(s):  
Shinn Liang Chang ◽  
Dai Jia Juan ◽  
Bean Yin Lee ◽  
You Jhih Lin
Keyword(s):  
Surface Roughness ◽  
Grain Size ◽  
Rotation Speed ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Hard Machining ◽  
Grinding Machine ◽  
Diamond Grain ◽  
Zirconia Oxide

Grinding technology is used in this study to overcome the hard machining of ceramic with hard and brittle characteristics. The grinding machine with diamond grain size 25 and 5 , spindles speed 1720 rpm and 3450 rpm are applied. Combining the unintentional roll clamp and the grinding machine, ceramic rods can be ground to the desired size.In the research, surface profilometer is applied to measure the rod surface roughness of processing results under different conditions. The results show that the grinding wheel with finer particle, the roughness of the ground ceramic rod will be better. While the rotation speed of grinding wheel is increased, the surface roughness will have the same trend.

scholarly journals Producing Optimum Quality Grinding Spindle using Hardened AISI 4340 Steel through a Cylindrical Grinding Process

2019 ◽  
Vol 9 (2) ◽  
pp. 447-454
Keyword(s):  
Surface Roughness ◽  
Grinding Process ◽  
Rough Machining ◽  
Aisi 4340 Steel ◽  
Cylindrical Grinding ◽  
4340 Steel ◽  
Grinding Machine ◽  
Experimental Runs ◽  
The Ideal ◽  
Aisi 4340

The intent of this study is to produce optimum quality grinding spindle using hardened AISI 4340 steel through the cylindrical grinding process. Primarily the AISI 4340 steel specimens are cut according to the product specification and subjected to rough machining. Then the steel specimens are subjected to a heat-treatment process to enhance the mechanical property hardness so that the specimen becomes wear-resistant. The experimental runs are planned depending on Taguchi’s L27(37) array and conducted in a cylindrical grinding machine (Toyoda G32 cylindrical grinding machine). The surface roughness of the machined specimens is measured using a calibrated surface roughness tester. A prediction model is created through regression analysis for the outcome. The significance of the selected grinding factors and their levels on surface roughness is found by analysis of variance (ANOVA) and F-test and finally. An affirmation test is directed to produce the ideal components.

scholarly journals Optimization of Grinding Parameters for Minimum Surface Roughness by Taguchi Parametric Optimization Technique

2012 ◽  
pp. 265-269
Author(s):  
Deepak Pal ◽  
Ajay Bangar ◽  
Rajan Sharma ◽  
Ashish Yadav
Keyword(s):  
Surface Roughness ◽  
Metal Cutting ◽  
Optimization Technique ◽  
Grinding Wheel ◽  
Machining Parameters ◽  
Cylindrical Grinding ◽  
Optimal Surface ◽  
Optimal Values ◽  
Grinding Machine ◽  
Cutting Processes

Cylindrical grinding is one of the important metal cutting processes used extensively in the finishing operations. Surface finish is the important output responses in the production with respect to quantity and quality respectively. The Experiments are conducted on universal tool and cutter grinding machine with L9 Orthogonal array with input machining variables as work speed, grinding wheel grades and hardness of material. The developed model can be used by the different manufacturing firms to select right combination of machining parameters to achieve an optimal surface roughness (Ra).The results reveals surface roughness (Ra).The predicted optimal values for Ra for Cylindrical grinding process is 1.07 Ra respectively. The results are further confirmed by conducting confirmation experiments.

scholarly journals Optimization of parameters in cylindrical and surface grinding for improved surface finish

2018 ◽  
Vol 5 (5) ◽  
pp. 171906 ◽  
Author(s):  
Dinesh Kumar Patel ◽  
Deepam Goyal ◽  
B. S. Pabla
Keyword(s):  
Surface Roughness ◽  
Surface Integrity ◽  
Surface Finish ◽  
Surface Characteristics ◽  
Surface Grinding ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Cylindrical Grinding ◽  
Grinding Parameters ◽  
Wheel Material

Surface integrity has attracted the attention of researchers for improving the functional performance of engineering products. Improvement in surface finish, one of the important parameters in surface integrity, has been attempted by researchers through different processes. Grinding has been widely used for final machining of components requiring smooth surfaces coupled with precise tolerances. Proper selection of grinding wheel material and grade with grinding parameters can result in an improved surface finish and improved surface characteristics. The present work reports the study of the effect of grinding parameters on surface finish of EN8 steel. Experiments were performed on surface grinding and cylindrical grinding for optimization of grinding process parameters for improved surface finish. Grinding wheel speed, depth of cut, table feed, grinding wheel material and table travel speed for surface grinding operation, and work speed for cylindrical grinding operation were taken as the input parameters with four types of grinding wheels (Al 2 O 3 of grades K and L, and white alumina of grades J and K). The surface roughness was taken as an output parameter for experimentation. The grinding wheel material and grade have been observed to be the most significant variables for both cylindrical grinding and surface grinding. Surface roughness in the case of surface grinding is better compared to that of cylindrical grinding, which can be attributed to vibrations produced in the cylindrical grinding attachment. Surface roughness ( R a ) values of 0.757 µm in cylindrical grinding and 0.66 µm in surface grinding have been achieved.

scholarly journals The Effects of Cylindrical Grinding Factors in the Production of Grinding Spindle using Hardened EN353 Steel

2019 ◽  
Vol 8 (4) ◽  
pp. 10640-10649
Keyword(s):  
Heat Treatment ◽  
Surface Roughness ◽  
Treatment Process ◽  
Grinding Process ◽  
Heat Treatment Process ◽  
Rough Machining ◽  
Cylindrical Grinding ◽  
Grinding Machine ◽  
Experimental Runs ◽  
Product Specification

The objective of this study is to produce the best possible grinding spindle using hardened EN 353 steel through the cylindrical grinding process. Primarily the EN 353 steel specimens are cut according to the product specification and subjected to rough machining. Then the steel specimens are subjected to a heat-treatment process to enhance the mechanical property hardness so that the specimen becomes wear-resistant. The experimental runs are planned based on Taguchi’s L27(37 ) array and conducted in a cylindrical grinding machine (Toyoda G32 cylindrical grinding machine). The surface roughness of the machined specimens is measured using a calibrated surface roughness tester. A prediction model is created through regression analysis for the outcome. The significance of the selected grinding factors and their levels on surface roughness is found by analysis of variance (ANOVA) and F-test and finally, a affirmation test is conducted to confirm the optimum factors.

A Study on Determination of Optimum Parameters for Lubrication in External Cylindrical Grinding Base on Taguchi Method

2019 ◽  
Vol 796 ◽  
pp. 97-102 ◽  
Author(s):  
Hoang Xuan Tu ◽  
Vu Ngoc Pi ◽  
Gong Jun
Keyword(s):  
Surface Roughness ◽  
Taguchi Method ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Taguchi Technique ◽  
Workpiece Material ◽  
Optimum Parameters ◽  
Set Up ◽  
External Cylindrical Grinding

This paper presents a study on determining optimum parameters for lubrication in external grinding process. In the study, experiments were designed by using Taguchi technique. The experiments were set up with Oemeta Unimet AS 192 lubricant, Al2O3 grinding wheel and the workpiece material of tool steel 9CrSi. From the results of the experiments, the influences of coolant parameters on the surface roughness were analyzed. It was found that the concentration of lubricant was the most impact, the second is flow rate and the coolant pressure has little impact on the surface roughness. Also, the optimum parameters of lubrication for getting minimum surface roughness were proposed.

Experimental Study on Surface Finishing Performances in Quick-Point Grinding

2007 ◽  
Vol 24-25 ◽  
pp. 97-102 ◽  
Author(s):  
Shi Chao Xiu ◽  
Chang He Li ◽  
Guang Qi Cai
Keyword(s):  
Surface Roughness ◽  
Feeding Rate ◽  
Point Contact ◽  
Surface Finishing ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Cylindrical Grinding ◽  
Axial Feeding ◽  
Grinding Speed

There are lower grinding force and temperature in quick-point grinding process because of the higher grinding speed and the less depth of cut, especially the point contact between the grinding wheel and the workpiece due to the point grinding angles. Thus it can achieve better surface finishing process in grinding cylindrical surface. Since the point grinding model is different from the conventional cylindrical grinding in theory, the surface roughness is in relation to the point-grinding angles greatly besides the grain granularity, depth of cut, grinding speed and axial feeding rate like the conventional cylindrical grinding process. Based on the theoretical studies on the surface roughness in the process, the surface finishing experiments and measures at the various grinding parameters were performed. The experimental results show that the process parameters, such as point-grinding angles, depth of cut, grinding speed and axial feeding rate, must be controlled reasonably for the higher surface finishing demand in quick-point grinding process.

A Study on Cost Optimization of External Cylindrical Grinding

2020 ◽  
Vol 977 ◽  
pp. 18-26
Author(s):  
Thi Hong Tran ◽  
Xuan Tu Hoang ◽  
Hong Ky Le ◽  
Quoc Tuan Nguyen ◽  
Thanh Tu Nguyen ◽  
...  
Keyword(s):  
Cost Optimization ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Wheel Wear ◽  
Cylindrical Grinding ◽  
Screening Experiments ◽  
Grinding Parameters ◽  
Hourly Rate ◽  
Proposed Model ◽  
External Cylindrical Grinding

Grinding cost is an essential factor in a grinding process. In external cylindrical grinding, there has been an absence of various input grinding process parameters which have significant effects on the grinding cost. This paper presents an optimization of the grinding cost to determine the optimum exchanged grinding wheel diameter based on the seven input grinding parameters consisting of the initial grinding wheel diameter, the grinding wheel width, the wheel life, the radial grinding wheel wear per dress, the total depth of dressing cut, the machine tool hourly rate, and the grinding wheel cost. Combined with the screening experiments, the influence of the grinding parameters on the optimum exchanged grinding wheel diameter for the external cylindrical grinding process was examined. In addition, the effect of the interactions between the input grinding parameters was also evaluated. Finally, the regression equation for computing the optimum exchanged grinding wheel diameter was introduced. Therefore, the proposed model can be further applied for the external grinding process effectively.

Cost Optimization of External Cylindrical Grinding

2013 ◽  
Vol 312 ◽  
pp. 982-989 ◽  
Author(s):  
Vu Ngoc Pi ◽  
Phan Quang The ◽  
Vu Hong Khiem ◽  
Nguyen Ngoc Huong
Keyword(s):  
Cost Optimization ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Overhead Cost ◽  
Cylindrical Grinding ◽  
Optimum Diameter ◽  
Machine Cost ◽  
External Cylindrical Grinding ◽  
Grinding Time ◽  
Cost Components

This paper introduces a study on cost optimization of external cylindrical grinding. The effects of many grinding process parameters such as the initial grinding wheel diameter, the wheel life, the total dressing depth as well as the effect of cost components including the machine cost, the labor including overhead cost, the grinding wheel cost and so forth were taken into account. A model for calculation the optimum exchanged grinding wheel diameter was proposed. With this optimum diameter, a new and effective way of using the grinding wheel was proposed and both the grinding cost and grinding time can be reduced considerably.

The study on surface grinding process of TI–6AL–4V alloy with resinoid cBN grinding wheel

2020 ◽  
Vol 34 (22n24) ◽  
pp. 2040135
Author(s):  
Phi-Trong Hung ◽  
Hoang-Tien Dung ◽  
Nguyen-Kien Trung ◽  
Truong-Hoanh Son
Keyword(s):  
Surface Roughness ◽  
Feed Rate ◽  
Chemical Reactivity ◽  
Surface Grinding ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Wet Grinding ◽  
Ti Alloys ◽  
Cbn Grinding Wheel

The grinding process of Titanium (Ti) alloys is extremely difficult as the cutting temperature is much higher than other machining processes due to the low thermal conductivity, high chemical reactivity, and rapid work hardening during machining of Ti alloys. This research investigates the effect of technology parameters on the surface roughness in the surface grinding of Ti–6Al–4V (Ti64) alloy with resinoid cBN grinding wheel. The experimental results show that the surface roughness is significantly affected by the feed rate, depth of cut (DOC) and cooling condition. Increasing feed rate or DOC all provides the higher surface roughness. The surface roughness obtained in the wet grinding is higher than those of the dry cutting. The scanning electron microscopy (SEM) images of Ti64 surfaces show that the machining surface with fewer defects can be produced with wet grinding process.

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