Correct Use and Maintenance of Nc Machine Tools

2014 ◽  
Vol 651-653 ◽  
pp. 676-679
Author(s):  
Quan Fang Sun ◽  
Jun Ling Zhang
Keyword(s):  
Control System ◽  
Machine Tool ◽  
Machine Tools ◽  
Numerical Control ◽  
Numerical Control System ◽  
Nc Machine Tool ◽  
Important Index ◽  
Nc Machine ◽  
Nc Machine Tools ◽  
Reasonable Use

A country's level of Nc machine tool and ownership, is to measure the level of manufacturing and industrial modernization level of important indicators, is also an important index to measure national comprehensive competitiveness. Therefore, how to better use and maintenance of Nc machine tool is an important issue. This paper introduced how to reasonable use of Nc machine tools, as well as the use of the numerical control system and inspection.

Research and Application of NC Machine Tool Energy Consumption Control Optimization

2013 ◽  
Vol 579-580 ◽  
pp. 314-319
Author(s):  
Xiu Ling Xu ◽  
Hong Liang Wang ◽  
Tian Biao Yu
Keyword(s):  
Control System ◽  
Energy Consumption ◽  
Machine Tool ◽  
Machine Tools ◽  
Numerical Control ◽  
Machining Process ◽  
Numerical Control System ◽  
Control Logic ◽  
Nc Machine Tool ◽  
Nc Machine

The numerical control machine tool, which is a typical energy-using product, because there are all sorts of energy loss and auxiliary functions, has low efficiency in machining process. Author makes a study of NC machine tool energy consumption controlling. With simens840Dsl numerical control system as an example, based on the analysis of CNC system control principle, according to processing characteristic of the part, the macro program is wrote to optimize dynamic characteristics of NC machine tool. According to the machine idle time in different work condition, three energy-saving control profiles are formulated, including machine standby, NC standby, auto shut off. By the formulation of the corresponding PLC control logic, low energy consumption of intelligent control of NC machine tool is realized. Integrate PAC3200/4200 multi-function meter in NC machine tools, quantitative measurement and analysis of energy consumption for numerical control system and ancillary equipment can be implemented, and machine tool real-time energy data can be obtained. This scheme has been successfully applied in long-men portable CNC machine tools, and obtained the ideal effect: to realize the optimize control of energy consumption, improve the performance of the machine tool, become more market competitiveness.

Research on the 840D NC Machine Tool Production Process Monitoring and Management

2014 ◽  
Vol 577 ◽  
pp. 421-424
Author(s):  
Le Ping Chu ◽  
De Ming Xiao ◽  
Zai Yu Chen ◽  
Cheng Rong Pian ◽  
Nan Wu ◽  
...  
Keyword(s):  
Machine Tool ◽  
Production Process ◽  
Machine Tools ◽  
Numerical Control ◽  
Nc System ◽  
Nc Machine Tool ◽  
Nc Machine ◽  
Nc Machine Tools ◽  
Plc Program ◽  
Status Data

According to the communication principle of 840D numerical control (NC) system and internal data structure, the PLC program is developed to make 840D system state data transmit to the PC with the MPI channels; production status data real-time monitoring system based on 840D NC machine tools is developed, meanwhile, the monitoring and data management for NC machine tool production process status is realized.

Study on Numerical Control System of Lampcover Spinning Machine

2013 ◽  
Vol 336-338 ◽  
pp. 1303-1308
Author(s):  
Jian Hong Zhou ◽  
Peng Shen ◽  
Zheng Weng
Keyword(s):  
Control System ◽  
Machine Tools ◽  
Manufacturing Industry ◽  
Numerical Control ◽  
Machining Process ◽  
Numerical Control System ◽  
Light Industry ◽  
Equipment Manufacturing ◽  
Nc Machine ◽  
Nc Machine Tools

Chinese spinning technology has developed for more than 40 years. Especially in recent years, various kinds of spinning equipment have been developed and contributed a lot to Chinese equipment manufacturing industry, but it is blank in the light industry and civil industry. Due to the high cost and programming complexity of NC machine tools, we have no dedicated spinning machine and mostly rely on simple manual in the lampcover production. As to the above problems, we developed the lampcover NC spinning machines that can generate the track automatically and complete automatic control in the machining process.

scholarly journals The Errors Recognition and Compensation for the Numerical Control Machine Tools Based on Laser Testing Technology

Open Physics ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 857-862
Author(s):  
Qian Gao ◽  
Pingchuan Zhang
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Laser Interferometer ◽  
Numerical Control ◽  
Control Machine Tool ◽  
Nc Machine Tool ◽  
Testing Technology ◽  
Nc Machine ◽  
Nc Machine Tools ◽  
Control Machine

Abstract To improve the accuracy of numerical control machine tools error, this paper studies the application of laser testing technology in numerical control machine tool, and put forward a laser interferometer automatic aiming system which can conduct space error measurement. The system, in the process of the NC machine tool operating, can measure the machine tool space curve through changing the direction of the laser. The principle of laser interferometer and matlab analysis are adopted, through the experiment of laser interference technology in the numerical control machine tool, the law curve of error in NC machine tools is obtained, getting the method of error of NC machine tools. When conducting laser testing error experiment in NC machine tool, the results show that the laser testing can measure aggregated error and thermal error of NC machine tool better, with small control of environment and high accuracy of measurement.

A Reliability Analysis of NC Machine Tools Based on the Weibull Distribution

2015 ◽  
Vol 741 ◽  
pp. 763-767
Author(s):  
Hui Liang Li
Keyword(s):  
Weibull Distribution ◽  
Machine Tool ◽  
Machine Tools ◽  
Interval Estimation ◽  
Point Estimation ◽  
Numerical Control ◽  
Control Machine Tool ◽  
Failure Data ◽  
Nc Machine ◽  
Nc Machine Tools

In this paper, a series of numerical control machine tool truncated failure data collect.The data are assumed to be two parameter weibull distribution and related parameters is obtained and relevant inspection and test of hypothesis, it is concluded that the mathematical model of batch of nc machine tool failure interval time distribution.Relevant indicators to determine the reliability of nc machine tools, machine tool's observations, Machine tool observations, point estimation and interval estimation index value provide a theoretical basis for the research on reliability of machine tool.

Networked Connection of NC Machine Tools Based on MTConnect

2013 ◽  
Vol 418 ◽  
pp. 229-233 ◽  
Author(s):  
Tong Che ◽  
Ri Liang Liu
Keyword(s):  
Machine Tool ◽  
Data Acquisition ◽  
Machine Tools ◽  
Technical Standard ◽  
Nc Machine Tool ◽  
Nc Machine ◽  
Nc Machine Tools ◽  
Core Components ◽  
The Difference ◽  
Data Request

MTConnect is a technical standard recently proposed to facilitate the organized retrieval of process information mainly from numerically controlled machine tools. In this paper, core components such as agent, client, adapter etc are overviewed. Considering the difference in manufacturing devices openness and capabilities, different application schemes of agent and adapter are designed according to MTConnect protocol. Agent is designed for data acquisition in different situations and different ways to use Adapters are mainly discussed. Finally, the client, a software function in the application is developed by using C#. And the application is applied to a NC machine tool. In terms of data request, collecting, transmission and detection from a working NC machine tool, the proposed architecture in this paper is verified successfully.

Research on Roundness Error Measurement and Separation Method of NC Machine Tools

2013 ◽  
Vol 336-338 ◽  
pp. 988-994
Author(s):  
Sheng Hua Xiang ◽  
Hai Feng Lin
Keyword(s):  
Machine Tool ◽  
Error Detection ◽  
Machine Tools ◽  
Detection Methods ◽  
Error Source ◽  
Roundness Error ◽  
Nc Machine Tool ◽  
Nc Machine ◽  
Nc Machine Tools ◽  
Tool Motion

This paper first introduces the trajectory mode of the each error source in detection the roundness error of NC machine tool. The error separation algorithm is derived according to the relationship between the various error sources and the machine tool motion trajectory. Based on the two testing link under different condition, comparing the test results under two testing conditions, the main error source of NC machine tools is further analyzed. According to the merits and demerits of the two kinds of detection methods, the different round error detection method can be chosen under different occasions.

Reliability Assessment of Numerical Control Machine Tools Using Weibull Mixture Models

2011 ◽  
Vol 181-182 ◽  
pp. 161-165 ◽  
Author(s):  
Zhi Ming Wang ◽  
Jian Guo Yang
Keyword(s):  
Machine Tool ◽  
Mixture Models ◽  
Machine Tools ◽  
Information Criterion ◽  
Numerical Control ◽  
Single Model ◽  
Weibull Models ◽  
Nc Machine ◽  
Nc Machine Tools ◽  
Mean Square Errors

Weibull distribution is one of the most widely used model in reliability analysis of NC machine tools. In order to assess the reliability of NC machine tool, Generalized Expectation Maximization (GEM) algorithm is used to estimate parameters of mixture Weibull models. Akaike information criterion (AIC) and Bayesian information criterion (BIC) are used as comprehensive criteria to select the number of subpopulations of mixture models. The results show that mixture models are more suitable to assess reliability of NC machine tools than that of single model. Root mean square errors (RMSE) of mixture models reduce by 87.5% than that of single model. Reliability evaluation results of machine tool, such as MTBF etc., are given.

Reliability Modeling on Time between Failures of NC Machine Tools

2014 ◽  
Vol 1028 ◽  
pp. 145-150
Author(s):  
Yu Xia Xue ◽  
Wen Xu ◽  
Jun Hong Li
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Optimization Method ◽  
Cnc Machine ◽  
Reliability Modeling ◽  
Nc Machine Tool ◽  
Time Between Failures ◽  
Nc Machine ◽  
Coefficient Optimization ◽  
Nc Machine Tools

A reliability modeling method is proposed based on the time between failures of NC machine tools. According to the field data of the time between failures of a certain type of NC machine tools, parameter estimation of reliability model is made by use of particle swarm optimization (PSO)-based correlation coefficient optimization method, and it is proved that time between failure of CNC machine tool obeyed mathematical model of 3-parameter Weibull distribution via hypothesis testing. This provides the basis for reliability assessment of NC machine tool as well as the development of maintenance strategy in the future. Meanwhile, it also provides a theoretical reference for the reliability prediction of the whole NC machine tool.

A Technique of NC Machine Tool Remote Monitoring Based on Internet

2013 ◽  
Vol 441 ◽  
pp. 335-338
Author(s):  
Dian Zheng Zhuang ◽  
Yu Hua Zhu
Keyword(s):  
Machine Tool ◽  
Remote Monitoring ◽  
Machine Tools ◽  
Long Distance ◽  
Topology Structure ◽  
Nc Machine Tool ◽  
And Topology ◽  
Nc Machine ◽  
Nc Machine Tools ◽  
Ethernet Controller

This article introduced the developmental status about networking of NC, discussed Internet-based project of network technique and topology structure, that used communicate controller to connect common NC machine tools to Internet and monitor long-distance；gave out the method to realize communicate controller that used MCU and RTL8019AS Ethernet controller chip.

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