Effect of finishing time and electrolyte composition on geometric accuracy and surface finish of straight bevel gears in ECH process
Effect of finishing time and electrolyte composition on geometric accuracy and surface finish of straight bevel gears in ECH process
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DOI：
10.1016/j.cirpj.2014.09.002
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发表时间：
2015-01-01
影响因子：
4.8
通讯作者：
Jain, N. K.
中科院分区：
文献类型：
--
作者：
Shaikh, Javed H.;Jain, N. K.
为了提高直齿锥齿轮的使用寿命和工作性能，研究了电解液成分和加工时间对直齿锥齿轮电化学珩磨（ECH）几何精度和表面光洁度的影响。采用双互补阴极齿轮的创新概念，建立了直齿锥齿轮ECH精加工的实验装置。它确保在没有任何往复运动的情况下完成锥齿轮的整个齿面宽度，并保持所需的电极间间隙（IEG）。NaCl和NaNO3的重量分析水溶液用作电解质。几何精度进行了评估，在间距和跳动的误差，而表面光洁度的平均值和最大表面粗糙度值进行了评估。电解液组成为75%NaNO_3和25%NaCl，整理时间为2 min，被认为是最佳组合。结果表明，锥齿轮的几何精度和表面光洁度有了相当大的提高。实践证明，该工艺可以提高锥齿轮的质量，且生产效率高。(C)2014年CIRP。
This paper presents study on the effects of electrolyte composition and finishing time on geometric accuracy and surface finish of straight bevel gears by electrochemical honing (ECH) process with an objective to improve their service life and operating performance. An experimental setup was developed for fine finishing of straight bevel gears by ECH using an innovative concept of twin complementary cathode gears. It ensured finishing the entire face width of the bevel gears without any reciprocating motion and maintained the required inter-electrode gap (IEG). Gravimetric aqueous solution of NaCl and NaNO3 was used as the electrolyte. Geometric accuracy was evaluated in terms of errors in pitch and runout while surface finish was evaluated by average and maximum surface roughness values. An electrolyte composition having 75% NaNO3 and 25% NaCl and finishing time of 2 min were found as the optimum combination. The results have shown considerable improvement in geometric accuracy and surface finish of the bevel gears. It proves the capability of ECH to improve the quality of the bevel gears of any material hardness with high productivity. (C) 2014 CIRP.