Analyses of Shear Angle in Orthogonal Cutting of Pine Wood

IF 0.7 4区 农林科学 Q4 MATERIALS SCIENCE, PAPER & WOOD
K. Orłowski, D. Chuchala, G. Sinn
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引用次数: 0

Abstract

The determination of energy effects for wood machining processes, such as cutting power and cutting forces, is very useful in designing of manufacture process of wooden products. A more accurate prediction of cutting forces requires a correct determination of the shear angle value, which can be determined using various models. In this article, shear angle values for an orthogonal linear cutting process of pine wood are determined. The pine wood analysed was represented by two groups of samples with different moisture content levels, 12 % and 20 %. Three different models were used to determine the shear angle values: the Merchant model, which is based on the rake angle and the angle of friction, model based on chip compression ratios and Atkins model based on material properties (elements of fracture mechanics). The values obtained have been analysed for comparison. Results showed that the values of the shearing angles determined from the chip compression ratios turned out to be higher than the values from Merchant equation. The shear angles determined from the Atkins model are, as expected, lower than those determined from the Merchant model. Furthermore, the shear angle values for moisture content of 20 % are higher than for moisture content of 12 %.
松木正交切削剪切角的分析
木材加工过程中能量效应的确定,如切削功率和切削力,在木制品制造过程的设计中非常有用。更准确地预测切削力需要正确确定剪切角值,剪切角值可以使用各种模型来确定。本文确定了松木正交线性切削过程的剪切角值。所分析的松木由两组不同含水量水平的样品代表,分别为12%和20%。使用三种不同的模型来确定剪切角值:基于前角和摩擦角的Merchant模型、基于切屑压缩比的模型和基于材料特性(断裂力学元素)的Atkins模型。对获得的数值进行了分析比较。结果表明,由切屑压缩比确定的剪切角的值高于Merchant方程的值。正如预期的那样,由Atkins模型确定的剪切角低于由Merchant模型确定的剪角。此外,水分含量为20%的剪切角值高于水分含量为12%的剪切角。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Drvna Industrija
Drvna Industrija MATERIALS SCIENCE, PAPER & WOOD-
CiteScore
1.80
自引率
9.10%
发文量
32
审稿时长
>12 weeks
期刊介绍: "Drvna industrija" ("Wood Industry") journal publishes original scientific and review papers, short notes, professional papers, conference papers, reports, professional information, bibliographical and survey articles and general notes relating to the forestry exploitation, biology, chemistry, physics and technology of wood, pulp and paper and wood components, including production, management and marketing aspects in the woodworking industry.
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