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Grinding worm wear evaluation and its influence on gear surface topography in continuous generating gear grinding

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Abstract

Due to complex geometry and movement involved in continuous generating gear grinding, the grinding worm wear characterization is different from that in regular grinding processes. Grinding worm wear evaluation with accumulated removed material volume was investigated through wear status evolution experiments. By changing grinding parameters in orthogonal experiments, grinding worm surfaces with various wear status and their resulting gear surface roughness were obtained. The results show that the fractal dimension could be used to roughly quantify grinding worm wear status. A nearly linear relationship was found between the fractal dimension and the removed material volume. Grinding speed, normal stock, feed rate, and shifting value were proven to have great influence on grinding worm wear. A significant negative correlation was found between the fractal dimension and surface roughness. However, due to shifting movement, both coarse grinding parameters and finished grinding parameters can affect gear surface. Smaller fractal dimensions were found to result in smoother gear surfaces and vice versa. Based on the result, grinding parameters in continuous generating grinding were recommended. Grinding speed should be as high as possible considering the machine tool capability. Normal stock of 0.02–0.09 mm, feed rate of 50–100 mm/min, and shifting value of 7 mm should be adopted in finished grinding.

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Data availability

The datasets used or analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was supported by the National Key R&D Program of China (No. 2019YFB1703700).

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Contributions

Yijie Tao carried out the experiment and contributed significantly to date analysis. Guolong Li proposed the method to experimentally investigate grinding worm wear and helped perform the analysis with constructive discussions. Bing Cao helped to observe gear surfaces and duplicates. Lin Jiang helped to perform the experiment.

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Correspondence to Guolong Li.

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Tao, Y., Li, G., Cao, B. et al. Grinding worm wear evaluation and its influence on gear surface topography in continuous generating gear grinding. Int J Adv Manuf Technol 123, 3301–3311 (2022). https://doi.org/10.1007/s00170-022-10368-z

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