Brushless Servomotor’s Thermal Behavior Computer Assisted Evaluation for a Linear Motion NC Axis Experimental Stand

Abstract:

The paper presents works carried out by the authors in the field of NC axes’ structural and functional optimization. This paper includes the results obtained by using a MathCAD application (developed in the doctoral thesis of the second author) for the servomotor's thermal behavior computer assisted evaluation. The analyzed servomotor is included in the driving system of a linear motion NC axis experimental testing stand, (existing in MMS department from EMTS Faculty). The NC axis of the experimental stand integrates a FAGOR brushless servomotor, a 1:1 ratio belt drive intermediary transmission, a ball screw - bearings assembly (lead screw - ball nut - bearings) and a driven element guided through a ball rail system. The MathCAD application was developed in order to perform specific calculation for servomotor's thermal energy dissipation and maximum operating temperature evaluation, and allows to perform the assisted final check and optimum selection of the electrical driving servomotors based on these results. The paper presents, through some screenshots from running the MathCAD application, the computer assisted evaluation procedure and results of the brushless servomotor's thermal behavior analysis corresponding to analyzed NC axis (included in the experimental stand).

• Periodical: Applied Mechanics and Materials (Volume 762)
• Pages: 21-26
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.762.21
• Online since: May 2015
• Authors: Florin Adrian Nicolescu, Georgia Cezara Avram, Andrei Mario Ivan, Adrian Theodor Mantea
• Keywords: Brushless Servomotor, Computer Assisted Evaluation, Experimental Stand, NC Axis, Thermal Behavior

References

[1] F. A. Nicolescu, G. C. Avram, A. M. Ivan, T. A. Mantea - Computer assisted selection of servomotor driving system for linear motion NC axis experimental stand, VI International Conference on Robotics, ROBOTICS 2014, Bucharest, (2014).

DOI: 10.4028/www.scientific.net/amm.762.61

[2] G. - C. Avram, Cercetări privind optimizarea structural – funcţională a axelor comandate numeric ale RI, în vederea creşterii performanţelor acestora (Research on structural and functional optimization of IR's numerically controlled axes in order to increase their performances), University POLITEHNICA of Bucharest, Bucharest, PhD. Thesis, pp.123-135 (2014).

[3] Project Relansin 1971/19. 09. 2004, Stand complex pentru testarea și încercarea șuruburilor cu bile (Complex stand for testing ball screws assembly), project director prof. phd. eng. Nicolae Predincea.

[4] Information on http: /www. fagorautomation. ch/_downloads/man_fxm_fkm_motors. pdf (FAGOR AUTOMATION, MOTOR FXM / FKM Installation manual Ref. 1301, FAGOR, 2013).

[5] A. Nicolescu, C. Avram, M. Ivan, Optimal servomotor selection algorithm for industrial robots and machine tools NC axis, Proceedings in Manufacturing Systems, Volume 9, Issue 2, (2014), p.105−114.

[6] information on http: /books. google. ro/books?id=MUmPAQAAQBAJ&pg=PA275&dq= brushless+motor+thermal+resistance&hl=en&sa=X&ei=3J_XU96kEsPmywOZz4CgBw&ved=0CDYQ6AEwAQ#v=onepage&q=brushless%20motor%20thermal%20resistance&f=false.