Research on the Influence of Shields to Thermal Equilibrium of CNC Machine Tool

2009 ◽  
Vol 626-627 ◽  
pp. 441-446
Author(s):  
Yang Liu ◽  
Ying Lu ◽  
Xue Feng Bi ◽  
Guang Qi Cai
Keyword(s):  
Machine Tool ◽  
Thermal Equilibrium ◽  
Thermal Characteristics ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Ansys Software ◽  
Element Analysis ◽  
Temperature Distributions ◽  
Cnc Lathe ◽  
Thermal Sources

In order to investigate that shields have the effect on the thermal equilibrium of CNC machine tool, this paper applies the theory of heat transfer and finite element analysis to analyze the thermal characteristics of CNC lathe CK40A/1000. By ANSYS software, the temperature distributions of spindle engine, headstock and bearing at thermal equilibrium with/without shields are obtained. By analyzing thermal equilibrium patterns and experiments, the temperature of spindle bearings with shields are 3-4 higher than without shields at thermal equilibrium. And shields have less influence on the temperature gradient of tool inner thermal sources.

Thermal Characteristics Finite Element Analysis and Temperature Rise Experiment for High Speed Motorized Spindle

2011 ◽  
Vol 52-54 ◽  
pp. 1206-1211 ◽  
Author(s):  
Huai Xing Wen ◽  
Mei Yan Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Machine Tool ◽  
Temperature Rise ◽  
High Speed ◽  
Thermal Characteristics ◽  
Analysis Model ◽  
Ansys Software ◽  
Motorized Spindle ◽  
Element Analysis

The thermal characteristics of the motorized spindle determines maching qualities and cutting capabilities, and is one of the important factors influencing the precision of the high speed NC machine tool. To improve the performance of the high speed machine tool, it is important to study the thermal characteristics of the motorized spindle. It had been studied in two ways: one is finite element analysis by Ansys software, in which the finite element analysis model was built. According to the actual working condition, the heat source and the heat transfer coefficient of every part are calculated. On this basis, the temperature field and temperature rises were gotten in Ansys software. The other way is temperature rises experiment on the motorized spindle test platform. The result was shown in the form of curve. These two ways shown the same result: the highest temperature rise appears in the area of electromotor, then followed by the rolling bearing .The result provides the necessary theory basis for optimizing the structure of the motorized spindle and establishes a basis for the research and application about the high speed spindle.

An Implementation of Intelligent CNC Machine Tools

2010 ◽  
Vol 44-47 ◽  
pp. 557-561 ◽  
Author(s):  
Chen Sheng Wang ◽  
Tjamme Wiegers ◽  
Joris S.M. Vergeest
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Tool Design ◽  
Cnc Machine Tools ◽  
Preliminary Evaluation ◽  
Machining Efficiency ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Machine Tool Design ◽  
Cnc Lathe

Improving the machining efficiency of CNC machine tools by introducing intelligence is now gaining more attention from both researchers and entrepreneurs. Based on the assessment of existing strategy of intelligent machine tool design, an implementation and preliminary evaluation of an intelligent CNC lathe has been reported in this paper. Techniques discussed in this paper are expected to benefit CNC machine tool researchers and designers in terms of the development of intelligent CNC machine tools.

Ontology-Based Fault Diagnosis Knowledge Representation of CNC Machine Tool

2013 ◽  
Vol 427-429 ◽  
pp. 1372-1375 ◽  
Author(s):  
Bin Shen ◽  
Shu Yu Zhao ◽  
Jia Hai Wang
Keyword(s):  
Fault Diagnosis ◽  
Knowledge Representation ◽  
Machine Tool ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Cnc Lathe

In order to improve the knowledge representation in the field of CNC machine tool fault diagnosis, a method of knowledge representation based on ontology was proposed. Firstly, the fault diagnosis process in this field were described and analyzed. Secondly, the definitions of ontology such as classes, attributes, relations, and functions were provided, in order to describe the process of knowledge representation based on ontology. At last, the model with OWL of fault diagnosis of CNC lathe was constructed with the protégé. It shows that the method proposed in this article to can improve the description of the CNC machine tool fault diagnosis.

Finite Element Analysis of Milling Head Box of CNC Machine Tool

2012 ◽  
Vol 605-607 ◽  
pp. 1519-1522
Author(s):  
Lei Sun ◽  
Xia Wang
Keyword(s):  
Finite Element ◽  
Machine Tool ◽  
Response Analysis ◽  
Optimized Design ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Element Analysis ◽  
Harmonic Response ◽  
Harmonic Response Analysis ◽  
Vibration Modal

The modal analysis and harmonic response analysis of milling head box were done by means of finite element method. Find out its characteristics of vibration modal. The analysis is conducive to the design of the milling head box of machine tool. It makes a base for optimized design and remanufacturing.

Virtual Design and Kinematics Simulation of a Combining CNC Machine Tool of Turning and Grinding Based on SolidWorks and ADAMS

2012 ◽  
Vol 271-272 ◽  
pp. 565-569 ◽  
Author(s):  
Shang Jun Guan ◽  
Ke Yang ◽  
Jun You Sun ◽  
Xin Jun Teng Li
Keyword(s):  
Machine Tool ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Virtual Design ◽  
Element Analysis ◽  
Design Procedures ◽  
Modeling Technology ◽  
Kinematics Simulation ◽  
Key Points

This paper describes and introduces useing parameterization and variable of Modeling Technology of SolidWorks software of design procedures, to finish virtual design of machine Tool of Turning and Grinding. Then go on with interference check in and kinematics simulation for Tools and Turning. Use finite element analysis of ANSYS to go on with stress analysis for key points of load of the machine, to provide that physical design of the machine is reasonable. It is achieved forecast of workpiece property in the time of designing. Thus it will be achieved feasibility of designing and study of combining machine tool of turning and grinding in virtual environment, so as simplify process of designing, and shorten the development of period, and improve the quality of designing.

Thermal characteristics analysis and test of spindle-column system for CNC machine tool

2020 ◽  
Vol 28 (3) ◽  
pp. 601-609
Author(s):  
邓小雷 DENG Xiao-lei ◽  
戴温克 DAI Wen-ke ◽  
周翎飞 ZHOU Ling-fei ◽  
周宜博 ZHOU Yi-bo ◽  
傅建中 FU Jian-zhong
Keyword(s):  
Machine Tool ◽  
Thermal Characteristics ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Column System ◽  
Characteristics Analysis

Finite Element Analysis of the Spindle Box Structure of Large CNC Machine Tool

2013 ◽  
Vol 423-426 ◽  
pp. 1889-1893
Author(s):  
Mo Wu Lu ◽  
Chang Lu ◽  
Xu Yang
Keyword(s):  
Natural Frequencies ◽  
Structural Features ◽  
Mode Shapes ◽  
Solid Model ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Ansys Software ◽  
Element Analysis ◽  
Box Structure ◽  
Analysis Design

In order to find the spindle box structural features. We use SolidWorks to establish solid model of the spindle box, and input the data to ANSYS by data interface provided the ANSYS software, and then calculate the static stress, natural frequencies and mode shapes which will provide a theoretical basis for dynamic analysis, design optimization.

Finite Element Analysis of Moving Trestle of CNC Machine Tool

2011 ◽  
Vol 361-363 ◽  
pp. 1553-1556
Author(s):  
Lei Sun ◽  
Ming Hai Wang ◽  
Xiao Peng Li ◽  
Yue Sun
Keyword(s):  
Finite Element ◽  
Machine Tool ◽  
Response Analysis ◽  
Optimized Design ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Element Analysis ◽  
Harmonic Response ◽  
Harmonic Response Analysis ◽  
Vibration Modal

Taking moving trestle of machine tool as example,the modal analysis and harmonic response analysis were done by means of finite element method. Find out its characteristics of vibration modal. The analysis is conducive to the design of the moving trestle of machine tool. It makes a base for optimized design and remanufacturing.

scholarly journals Conventional Lathe Remanufacturing into CNC Machine Tool: Uncertainty Modeling Approach

2020 ◽  
pp. 97-133
Author(s):  
Ziyad Tariq Abdullah
Keyword(s):  
Decision Making ◽  
Machine Tool ◽  
Uncertainty Modeling ◽  
Uncertainty Reduction ◽  
Advanced Technology ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Cnc Lathe ◽  
Optimum Solution

Aims: Uncertainty modeling to study possibility of proposing several remanufacturing alternatives of conventional lathe into CNC machine tool. Study Design: Conventional lathe into CNC machine remanufacturing-upgrading experience is used to project the suitable literature comparatively to construct uncertainty modeling. Faults modes of conventional lathe are studied to propose different remanufacturing solution based on faults literature viewpoints in field of lathe remanufacturing-upgrading, which are reviewed and modified to accommodate new changes that can accompany the current case study. Place and Duration of Study: Middle Technical University, Institute of Technology-Baghdad, Mechanical Techniques Department, between January 2020 and July 2020. Methodology: Decision making for selection of remanufactured alternatives and remanufacturing portfolio alternatives in field of lathe remanufacturing are reviewed. Experience in field of lathe remanufacturing is exploited to remodeling of existence models to optimize a remanufactured lathe into CNC machine as a case study. Methodology can be concluded into:- Literature survey to find two paths of: Faults and their statutes study. Remanufacturing portfolio study. Literature re-presentation and modeling. Literature results graphical modeling. Mathematical modeling of remanufacturability. Restoration alternative modeling Modeling of uncertainty. Results: Emerged technology aided conventional lathe into CNC lathe remanufacturing alternative exhibits good behavior of criteria toward optimization. While Advanced technology aided conventional lathe into CNC lathe remanufacturing alternative exhibits behavior to be of interesting ability to be a reservoir of developing potentials. Conventional technology aided conventional lathe remanufacturing alternative is of lower potentials to be developed into optimum solution. Conclusion: Remanufacturing-upgrading of conventional lathe into CNC machine in its mechanical part, it is merely traditional remanufacturing process of conventional lathe. Developing potentials can include that gearbox can be eliminated due to use of motorized axis, feed rod and lead screws, in both forward and transvers directions, can be replaced with motorized ball screws. Also tool post can be replaced with automatic tool changer while dovetail guide ways and saddles can be reused. Comparative literature based analysis and experience based analysis for uncertainty reduction can substitute the leak of relevant data acquisition for decision-making in field of remanufacturing. Uncertainty reduction modeling can enable simplify certain difficulties, the calculation of some criteria and adopting of simplified analysis methods so that theoretic and practical gap can be directed towards certain actual conditions to reach the optimum solution.

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