scholarly journals Rebuilding of heavy machine tools

2019 ◽  
Vol 570 ◽  
pp. 012017
Author(s):  
Z R Faskhieva ◽  
R M Khusainov
Keyword(s):  
Machine Tools ◽  
Heavy Machine

Modal Testing for Heavy Machine Tool Using Active Excitation

2014 ◽  
Vol 536-537 ◽  
pp. 1326-1332 ◽  
Author(s):  
Bo Luo ◽  
Bin Li ◽  
Xin Yong Mao ◽  
Hui Cai
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Inertial Force ◽  
Modal Testing ◽  
Modal Parameters ◽  
Part Quality ◽  
Machine Tool Structure ◽  
Machining Speed ◽  
Heavy Machine ◽  
Large Machine

For application in large machine tools, the machined part quality, accuracy as well as machining speed depende greatly on the dynamics of the structure. In this paper, an active-excitation modal analysis (AEMA), using inertial force of the moving slider to excite the structural modes, is proposed. Modal parameters of the machine tool structure estimated by AEMA are experimentally validated. Since the artificial excitation produced by elaborate excitation equipment is replaced by the inertial force of the slider, the proposed method is much more practical and economical than traditional methods.

Fever Analysis and Engineering Applications of the Heavy Machine Tool's Main Bearing

2013 ◽  
Vol 690-693 ◽  
pp. 1983-1987
Author(s):  
Shui Sheng Chen ◽  
Shuang Qiang Li ◽  
Zhong Ping Hua ◽  
Chen Dai
Keyword(s):  
Machine Tools ◽  
Rolling Bearing ◽  
Cnc Machine Tools ◽  
Cnc Milling ◽  
Practical Application ◽  
Heavy Duty ◽  
Cnc Machine ◽  
Main Bearing ◽  
Main Method ◽  
Heavy Machine

Large heavy-duty CNC machine tools commonly used rolling bearing as Main bearing. This paper analyses the causes of Main bearing fever deeply, pointing out the mechanism of the bearing heating; combined with the practical application of the TK6926 landing CNC milling and borings main bearing, putting forward the main method to reduce the rolling bearing fever and achieved good results.

The Research of Super-Heavy CNC Machine Accuracy Reliability Based on Multi-Body Kinematics

2011 ◽  
Vol 211-212 ◽  
pp. 115-121 ◽  
Author(s):  
Zhan Qi Hu ◽  
Ya Fei Xie ◽  
Jin Chao Liu
Keyword(s):  
Machine Tools ◽  
Technical Problem ◽  
Cnc Machine Tools ◽  
Maintenance Period ◽  
Cnc Machine ◽  
Spatial Error ◽  
Machining Errors ◽  
Similar Product ◽  
Multi Body ◽  
Heavy Machine

In order to solve the key technical problem in maintenance and repairing of heavy CNC machine tools, the concept of precision reliability and its forecasting module are proposed. The method is especially used for researching of reliability of heavy machine tools of which the samples are not enough for statistical methods. Firstly, spatial error module is established for a type of super heavy mill &boring machine tool based on multy-body kinematics. Then, the effect of wearing amount of kinematic pair of machine tools on machining precision is researched. Therefore forecasting modules for maintenance period and premature wearing of heavy CNC machine tools are built up. The method proposed can be used in calculating for maintenance period of heavy machine tools, analyzing for source of machining errors, and optimal design for total life of CNC machine tools. It can also be used in research of reliability for similar product of single piece or small batch.

scholarly journals Method of Structural Design of Heavy Machine Tools

2016 ◽  
Vol 22 ◽  
pp. 146-152 ◽  
Author(s):  
Viktor Kovalov ◽  
Yana Antonenko ◽  
Predrag Dašić
Keyword(s):  
Structural Design ◽  
Machine Tools ◽  
Heavy Machine
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