Numerical Control Machines Performance Test Platform

2012 ◽  
Vol 214 ◽  
pp. 840-844
Author(s):  
Juan Song ◽  
Ming Li
Keyword(s):  
Performance Test ◽  
Dynamic Performance ◽  
Performance Testing ◽  
Numerical Control ◽  
High Grade ◽  
Control Equipment ◽  
Test Platform ◽  
The Cost ◽  
Important Significance ◽  
Control Machine

Research on the dynamic performance testing test platform of numerical control equipment high-grade guarantee numerical control machine running reliable quality and machining, effectively predict the occurrence of equipment failure and effective, and save a lot of the cost of maintenance, improve the level of management of equipment. It has a very important significance are safe and reliable, and the production of numerical control equipment and modern scientific maintenance and management. The purpose of the research is to provide test equipment work show high-grade numerical control machine dynamic performance, another purpose of study is to provide the critical test technology, and reveals the dynamic performance of faults and development, the deterioration of the accuracy of the factors that lead.

scholarly journals Development of gear dynamic performance testing machine

2021 ◽  
Vol 12 ◽  
pp. 20
Author(s):  
Ke Li ◽  
Bo Yu ◽  
Zhaoyao Shi ◽  
Zanhui Shu ◽  
Rui Li
Keyword(s):  
High Speed ◽  
Performance Test ◽  
Dynamic Testing ◽  
Mechanical Design ◽  
Dynamic Performance ◽  
External Disturbance ◽  
Testing Machine ◽  
High Stress ◽  
Performance Testing ◽  
Current Application

With the development of gears towards high temperature, high pressure, high speed and high stress, gear measurement, in which only the static geometric accuracy is considered, is unable to meet the current application requirements. While, the low precision and single function gear tester constrains the measurement of gear dynamic performance. For the resolution of this problem, based on the principle of gear system dynamics and several precision mechanical design techniques, a gear dynamic testing machine has been developed, providing new instruments for gear testing. On the basis of research of the principle of dynamic performance test, the primary measurement items of the testing machine have been determined. The measuring principles of each item and the driving and loading form of the testing machine have been examined. The measurement and control system of the testing machine and its corresponding software have been developed. The instrument can not only obtain the static precision index of the gear, but also obtain the dynamic performance index of the gear in variable working conditions. According to the actual test, the uncertainty of instrument is 3.8 μm and the external disturbance caused by the shaft vibration is less than 0.6 μm, which can meet the 5–6 grade precision gear testing requirement.

Traction Performance Testing of Dongfeng 8B Locomotive and Failure Analysis for Operation on Southern Xinjiang Railway

2012 ◽  
Vol 538-541 ◽  
pp. 2561-2566
Author(s):  
Yu Hui Wang ◽  
Deng Kang Ye
Keyword(s):  
Failure Analysis ◽  
Performance Test ◽  
Dynamic Performance ◽  
Performance Testing ◽  
Emergency Braking ◽  
Single Vehicle ◽  
Braking Distance ◽  
Operation Test ◽  
Noise Test ◽  
Southern Xinjiang

In order to test the performance of Dongfeng 8B locomotive, a series of identification tests on prototype were carried out, which included the cab noise test, emergency braking distance test for single vehicle, weighing of locomotives traction performance test and dynamic performance test. A series of problems were discovered after a comprehensive operation test on the Southern Xinjiang Railway, relevant causes are identified after analysis and investigation, and appropriate corrective measures are proposed.

The Centerline Position Measuring and Online Machining Compensation of the Rail Base for High-Speed MAGLEV

2006 ◽  
Vol 532-533 ◽  
pp. 592-595
Author(s):  
Lei Zhang ◽  
Bo Zhang ◽  
Lin Ba ◽  
Hang Gao
Keyword(s):  
High Speed ◽  
Design Theory ◽  
Performance Test ◽  
Numerical Control ◽  
Measuring System ◽  
Control Machine Tool ◽  
Machining Precision ◽  
Displacement Sensors ◽  
Movement Error ◽  
Control Machine

The precision machining of the rail base for high-speed Magnetically Levitated Trains (MAGLEV) is the precondition for laying the high-quality whole rail and accomplishing the integrative performance test of the train. A new method is advanced to improving the machining precision in this paper. The X and Y coordinates of the cross centers on the rail base for MAGLEV will be obtained through two raster displacement sensors which are perpendicular to each other. So the machining datum position of the rail will be determined. According to the spatial position relationship between the straight movement error of the guideway on the numerical control machine tools and the central line of the rail base for MAGLEV, error compensation will be made to improve the machining precision in the process of the numerical control machining. The mechanism design theory of the measuring system is presented in this paper. On basis of both the design theory and the software platform of LabWindows/CVI, the virtual measurement system for measuring straight movement error of the rail on the numerical control machine tool, which is used to machining the rail base for MAGLEV will be established.

Research and Application of the Structural Optimization Design Technique for the Large and Efficient Band Sawing Machine

2013 ◽  
Vol 690-693 ◽  
pp. 2901-2905
Author(s):  
Guo Jin Chen ◽  
You Ping Gong ◽  
Tin Tin Liu ◽  
Hui Peng Chen ◽  
Jing Ni
Keyword(s):  
Machine Tools ◽  
Optimization Design ◽  
Dynamic Performance ◽  
Performance Testing ◽  
The Finite Element Method ◽  
Development Cycle ◽  
Processing Accuracy ◽  
Improvement Scheme ◽  
Dynamics Models ◽  
Important Significance

This paper takes the large band sawing machine GB42500H as the research object, and establishes the dynamics models of its various parts. Respectively, the relative research is done from the theoretical modal analysis and the dynamic performance testing. According to the analysis results, the structure or geometry improvement scheme of the parts is proposed. The paper also studies preliminarily the dynamic characteristics of the large band sawing machine GB42500H. During the analysis, the models of the parts and the whole are established using the finite element method to optimize the structures of the parts and the whole. That has undoubtedly a very important significance for improving the dynamic performance for the new machine tools structure, increasing the processing accuracy, and shortening the development cycle and costs.

Evaluation of Asphalt Mixture Performance Using Cracking and Durability Tests at a Full-Scale Pavement Facility

2021 ◽  
pp. 036119812110218
Author(s):  
Amir Golalipour ◽  
Varun Veginati ◽  
David J. Mensching
Keyword(s):  
Performance Test ◽  
Asphalt Mixture ◽  
Performance Testing ◽  
Field Performance ◽  
Optimization Procedure ◽  
Cyclic Fatigue ◽  
Intermediate Temperature ◽  
Index Test ◽  
Reclaimed Asphalt ◽  
Indirect Tensile

In the asphalt materials community, the most critical research need is centered around a paradigm shift in mixture design from the volumetric process of the previous 20-plus years to an optimization procedure based on laboratory-measured mechanical properties that should lead to an increase in long-term pavement performance. This study is focused on advancing the state of understanding with respect to the value of intermediate temperature cracking tests, which may be included in a balanced mix design. The materials included are plant-mixed, laboratory-compacted specimens reheated from the 2013 Federal Highway Administration’s (FHWA’s) Accelerated Loading Facility (ALF) study on reclaimed asphalt pavement/reclaimed asphalt shingle (RAP/RAS) materials. Six commonly discussed intermediate temperature (cracking and durability) performance testing (i.e., Asphalt Mixture Performance Tester [AMPT] Cyclic Fatigue, Cantabro, Illinois Flexibility Index Test [I-FIT], Indirect Tensile Cracking [ITC, also known as IDEAL-CT], Indirect Tensile Nflex, and Texas Overlay Test) were selected for use in this study based on input from stakeholders. Test results were analyzed to compare differences between the cracking tests. In addition, statistical analyses were conducted to assess the separation among materials (lanes) for each performance test. Cyclic fatigue and IDEAL-CT tests showed the most promising results. The ranking from these two tests’ index parameters matched closely with ALF field performance. Furthermore, both showed reasonable variability of test data and they were successful in differentiating between different materials.

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