Precise alignment method of the large-scale crankshaft during non-circular grinding

被引：0
|
作者：
20155101698862
机构：
[1] Shen, Nanyan
[2] Li, Jing
[3] Ye, Jun
[4] Qian, Xiang
[5] Huang, Haitao
来源：
Li, Jing (ian1982@shu.edu.cn) | 1600年 / Springer London卷 / 80期
关键词：
A large-scale crankshaft of internal-combustion engine is easy to bend and twist when clamped onto the grinding machine. The deviation of workpiece axis from its optimal machining axis has a significant influence on machining accuracy of angle; eccentric throw; and diameter and contour of the heavy crankshaft in non-circular grinding. To reduce the consumption of manual labor and setting-up time; an automatic alignment approach and apparatus is proposed and integrated into the non-circular grinder. The on-machine gauge senses X and Y components of deviation of crank journal axis and feed them back to the computerized numerical control system. The motor-driving steady rests based on slider-crank mechanism are controlled to compensate for the deviation. The algorithm with self-correcting ability for compensation value is employed to make up for the finite contact stiffness of workpiece and steady rest. The results of three alignment tests are compared; which demonstrates the better effect on alignment precision and efficiency of the self-correcting compensation. © 2015; Springer-Verlag London;
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页码：5 / 8
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