基于次摆线轨迹的铣削层厚度模型

发布时间：2018-04-25 01:29

本文选题：铣削层厚度模型 + 次摆线　；参考：《清华大学学报(自然科学版)》2017年11期

【摘要】：铣削层厚度模型很大程度上影响着铣削加工瞬时铣削力计算精度,在每齿进给量较小情况下能较好地反映铣削层厚度的瞬时变化,但在每齿进给量较大情况下铣削层厚度计算精度不足。该文分析铣削刃随刀具旋转和工件进给的运动规律,建立铣削刀具次摆线轨迹模型,给出铣削起始角和终止角,提出一种基于次摆线轨迹的铣削层厚度模型。通过与现有圆弧模型和等效均匀厚度模型对比,结果表明:该模型在不同每齿进给量下均能保证较高准确性。
[Abstract]:The milling layer thickness model greatly affects the accuracy of instantaneous milling force calculation, and can reflect the instantaneous change of milling layer thickness when the feed per tooth is small. However, the accuracy of calculating the thickness of milling layer is insufficient when the feed per tooth is large. This paper analyzes the movement law of milling edge rotating with cutting tool and workpiece feeding, establishes milling tool subcycloid trajectory model, gives milling starting angle and termination angle, and puts forward a milling layer thickness model based on subcycloid trajectory. Compared with the existing arc model and the equivalent uniform thickness model, the results show that the model can ensure higher accuracy under different feed rates per tooth.
【作者单位】：清华大学机械工程系;电子科技大学机械电子工程学院;
【基金】：国家科技重大专项(2014ZX04014-031)
【分类号】：TG547

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