CNC Cylindrical Grinding Machine Reliability Analysis and Optimization

2014 ◽  
Vol 716-717 ◽  
pp. 707-710
Author(s):  
Jin Wei Fan ◽  
Xiao Long Yi ◽  
Chao Liu ◽  
Yong Jun Liu
Keyword(s):  
Fault Location ◽  
Comprehensive Evaluation ◽  
Weak Links ◽  
Cylindrical Grinding ◽  
Machine Reliability ◽  
Cnc Grinding ◽  
Complete Failure ◽  
Grinding Machines ◽  
Grinding Machine ◽  
Overall Reliability

CNC cylindrical grinding machine reliability is an important performance indicators, the level of reliability will directly affect the use of CNC cylindrical grinding machine. Reliability of the traditional classification method is not clear, standards are not uniform, the paper application taxonomy for 12 CNC grinding machines from September 2012 to July 2014 for two years more than 600 pieces complete failure and repair data for statistical analysis to identify a greater impact on the overall reliability of the fault location and cause of the malfunction. According to the probability of occurrence of each failure mode, the severity of harm's comprehensive evaluation of the degree of fault of each site, identify the weak links of the whole system. As a result, the reliability of CNC cylindrical grinding machine will be greatly improved.

Vibration in Traverse Cut Cylindrical Grinding - Experiments and Analysis

2011 ◽  
Vol 264-265 ◽  
pp. 1124-1129 ◽  
Author(s):  
Ramesh Rudrapati ◽  
Pradip Kumar Pal ◽  
Asish Bandyopadhyay
Keyword(s):  
Process Parameters ◽  
Surface Finish ◽  
Dynamic Performance ◽  
Dimensional Accuracy ◽  
Vibration Signals ◽  
Cylindrical Grinding ◽  
Good Surface ◽  
Good Surface Finish ◽  
Grinding Machines ◽  
Grinding Machine

Good surface finish is one of the important demands from the outputs of a cylindrical grinding machine. Also it is expected that dimensional accuracy, including accuracy in roundness, is fine in traverse cut cylindrical grinding. Now, like any other machine tool, cylindrical grinding machines also do vibrate, and vibration will affect accuracy and surface finish of the parts produced in grinding. The analysis of vibration in cylindrical grinding is then very much important. In the present study some aspects of vibration – behavior of cylindrical grinding machine have been experimented and analyzed. The process parameters have been varied and vibration signals have been measured in different directions by positioning an accelerometer at tail stock of the machine. The data have been analyzed through various statistical techniques to identify and predict vibration at given combinations of process parameters. The results and analysis of data give useful idea about dynamic performance of cylindrical grinding machine in traverse cut cylindrical grinding operation.

Research on Reliability Growth Technology of CNC Grinding Machine

2013 ◽  
Vol 365-366 ◽  
pp. 522-526
Author(s):  
De Rong Zheng ◽  
Jin Wei Fan ◽  
Xiao Xia Liang
Keyword(s):  
Growth Curve ◽  
System Reliability ◽  
System Parameter ◽  
Reliability Growth ◽  
Cnc System ◽  
Machine Reliability ◽  
Cnc Grinding ◽  
Grinding Machine ◽  
Cnc Grinding Machine ◽  
Growth Technology

Based on the collected data to carry on the analysis, found that the CNC system in the CNC grinding machine fault rate, a large part of the station, the reliability growth of CNC system is studied in the paper, CNC system parameter selecting principles of reliability growth are particularly discussed. CNC system reliability ideal growth curve is settled to CNC system reliability, Thus increasing CNC system to improve the reliability of CNC grinder machine reliability is of great significance.

Prioritizing Design Configurations of Vertical Grinding Machines Considering Static and Dynamic Performances

2011 ◽  
Vol 199-200 ◽  
pp. 1405-1409
Author(s):  
Yong Liang Chen ◽  
Chao Hao Wang ◽  
Jin Ping Pang ◽  
Da Wei Zhang ◽  
Guo Li Xia
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Comprehensive Evaluation Method ◽  
Static And Dynamic Analysis ◽  
Adaptable Design ◽  
Static Performance ◽  
Dynamic Performances ◽  
Grinding Machines ◽  
And Performance ◽  
Grinding Machine

A new method to evaluate design candidates in adaptable design of vertical grinding machines considering static and dynamic performances is introduced. According to adaptable design principles, the comprehensive evaluation method of dynamic and static performance was used to evaluate the value of structural change and performance improvement. Taking the redesign of vertical grinding machine for example, some design candidates were provided for its weak parts. Based on the evaluation method, the data on design candidates, which was derived from the static and dynamic analysis, was accurately analyzed and the design candidates were accurately and rapidly evaluated. Finally, the best configuration was selected.

Research on the Evaluation of Small Sample Reliability for CNC Grinding Machine Tools Based on Bayes Theory

2014 ◽  
Vol 971-973 ◽  
pp. 688-692 ◽  
Author(s):  
Jin Wei Fan ◽  
Zhong Yuan Zhou ◽  
Ze Li Wang ◽  
Wei Miao
Keyword(s):  
Machine Tools ◽  
Small Sample ◽  
Technology Research ◽  
Test Cycle ◽  
Experiment Data ◽  
Bayes Theory ◽  
Machine Reliability ◽  
Cnc Grinding ◽  
Grinding Machine ◽  
Cnc Grinding Machine

Aiming at the limitation by the high cost of test and length cycle process of the CNC grinding machine reliability evaluation, this article adopted small sample technology which needs less data while getting higher evaluation accuracy, by using the theory of Bayes theorem and failure rate as of the random variables, the experiment data of tracking CNC grinding machine for a year is analyzed. Results indicate that results acquired by this mean are consistent with the actual; meanwhile, it shortens test cycle and reduces cost, which is a very effective way to analysis CNC grinding machine. Therefore, it’s very essential that the small sample technology research is applied in the CNC grinding machine evaluation.

The Finite Element Analysis and Optimization for the Grinder Based on the Joint Surface

2013 ◽  
Vol 281 ◽  
pp. 165-169 ◽  
Author(s):  
Xiang Lei Zhang ◽  
Bin Yao ◽  
Wen Chang Zhao ◽  
Ou Yang Kun ◽  
Bo Shi Yao
Keyword(s):  
Finite Element ◽  
Natural Frequency ◽  
Element Model ◽  
Joint Surface ◽  
Weak Links ◽  
Response Analysis ◽  
Element Analysis ◽  
Static And Dynamic Analysis ◽  
Harmonic Response Analysis ◽  
Grinding Machine

Establish the finite element model for high precision grinding machine which takes joint surface into consideration and then carrys out the static and dynamic analysis of the grinder. After the static analysis, modal analysis and harmonic response analysis, the displacement deformation, stress, natural frequency and vibration mode could be found, which also helps find the weak links out. The improvement scheme which aims to increase the stiffness and precision of the whole machine has proposed to efficiently optimize the grinder. And the first natural frequency of the optimized grinder has increased by 68.19%.

Static and Dynamic Characteristics Analysis of Precise Composite CNC Grinding Machine

2011 ◽  
Vol 411 ◽  
pp. 88-93
Author(s):  
Hong Lin Zhao ◽  
Yun Fei Sun ◽  
Rui Chen ◽  
Yu Mei Huang ◽  
Guang Peng Zhang ◽  
...  
Keyword(s):  
Finite Element ◽  
Dynamic Characteristics ◽  
Element Model ◽  
Machine Model ◽  
Static And Dynamic Characteristics ◽  
Cnc Grinding ◽  
Characteristics Analysis ◽  
The Subject ◽  
Grinding Machine ◽  
Cnc Grinding Machine

The parameters of joint parts must be included in the finite element model of a whole grinding machine. The subject investigated in this paper is B2-K3000 high-precision composite flexible grinding machine. Through finite element modeling, the joint part parameters are integrated into the whole grinding machine model to establish a dynamic model and then analyze its static and dynamic characteristics. The result shows that the whole grinding machine possesses good features, but it still needs to be improved. This paper gives suggestions for its structure development and application.

scholarly journals Reliability analysis of cooling system of CNC grinding machine based on FTA analysis

2019 ◽  
Vol 612 ◽  
pp. 032030 ◽  
Author(s):  
Yiling Zhang ◽  
Jinwei Fan ◽  
Zhongsheng Li ◽  
Changjun Wu ◽  
Haohao Tao ◽  
...  
Keyword(s):  
Reliability Analysis ◽  
Cooling System ◽  
Cnc Grinding ◽  
Grinding Machine ◽  
Cnc Grinding Machine
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