Development and Experimental Study of the Online Dynamic Balance System for Grinding Machine

Abstract:

The vibration of grinding wheel spindle will significantly reduce the machining quality and machining accuracy of precision grinding. In order to suppress the grinding wheel rotor vibration effectively, the Spray-Typed online dynamic balance system for specific grinding wheel spindle was designed composed of terminal balance, hydraulic system and control system. To achieve the amount of spindle unbalance accurate extraction and liquid volume control, using hydraulic system to achieve the balance of the terminal of the liquid loading and using high-performance DSP chip as a control method. A segmented spindle online dynamic balance method , combining the advantages of influence coefficient method and coordinate rotation optimization method was proposed. The method can fast approaching the goal of balancing and meet the local precise adjustment of the balance weight. At last, the online dynamic balance experiment of grinding wheel spindle is carried out in the industrial field, the grinding spindle vibration displacement amplitude decreased from 17.8 to 7.7 before and after balance, fall by as much as 55%, which verifies the validity and feasibility of the system.

• Periodical: Applied Mechanics and Materials (Volume 868)
• Pages: 69-74
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.868.69
• Online since: July 2017
• Authors: Xia Lun Yun*, Zheng Bang Hu, Xiao Bo Ma, Xue Song Mei, Ge Dong Jiang
• Keywords: Balance Method, Balance Terminal, Grinding Machine, Online Dynamic Balance System

References

[1] P. Cong, W. Wei and Q. Zhang, Study on adjustment method of balance mass in the dynamic balance of grinding wheel, Hydromechatronics Engineering. 17(2014 ) 99-101.

[2] T. Zha, Study on grinding wheel wear and grinding force of spherical grinding with cup wheel, Shanghai Jiao Tong University(2013).

[3] P. Wang, Development of online adjusting device for grinding wheel dynamic balance, Shenyang Ligong University(2008).

[4] T. EL, Dynamic balancing of rotating machinery in the field, Trans. ASME. 56(1934) 745-753.

[5] B. JG, Methods of rotor-unbalance determination, ASME Journal of Applied Mechanics. 61(1939) A1-A6.

[6] Sh. Zhang, L. Wu and D. Zhou, Analysis of double-face online dynamic balance of machine tool spindle with balance disks, Mechanical Design and Manufacturing. 7(2010)152-154.

[7] X. Wang, Zh. Wu and G. Yang, Theory and tests for least square influence coefficient method based on an improved particle swarm optimization algorithm, Journal of Vibration and Shock. 32(2013)100-104.