Strain analysis near the cutting edge in orthogonal cutting of hinoki (Chamaecyparis obtusa) using a digital image correlation method
Strain analysis near the cutting edge in orthogonal cutting of hinoki (Chamaecyparis obtusa) using a digital image correlation method
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使用数字图像相关法对扁柏（Chamaecyparis obtusa）正交切割切削刃附近的应变进行分析
DOI：
10.1007/s10086-018-1724-x
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发表时间：
2018
影响因子：
2.9
通讯作者：
Yoshihisa Fujii
中科院分区：
文献类型：
--
作者：
Yosuke Matsuda;Yuko Fujiwara;Yoshihisa Fujii
采用数字图像相关（DIC）方法，对风干扁柏（Chamaporisobtusa）在低速正交切削过程中，切削刃约0.5mm范围内的应变分布进行了测量，以阐明应变分布与切削条件（切削角（）和切削深度（））之间的关系。应变以0.04 mm步长测量，可测量的最小应变约为0.08%。当与切削方向垂直时，3%或更大的拉伸应变倾向于向刀具前方延伸0.2 mm或更远。这种张力对应于I型切屑中前劈裂的发生。沿着切削刃的路径检测到的张力沿着减小和/或减小。在I型中，倾向于在工具前方检测到正剪切应变。在II型和III型中，阴性倾向于在工具之前检测到。这些评价被认为是与芯片的伸长率和收缩。该研究证实了DIC方法用于切削条件评估以及将切屑形成分类为切屑类型的可用性。
A digital image correlation (DIC) method was utilized to measure strain distributed within approximately 0.5 mm of the cutting edge during slow-speed orthogonal cutting of air-dried hinoki (Chamaecyparis obtusa), to clarify the relationships of the strain distribution and cutting conditions, including cutting angle () and depth of cut (). The strain was measured in 0.04 mm steps, and the measurable minimum strain was approximately 0.08%. Tensile strain of 3% or larger normal to the cutting direction,, tended to extend 0.2 mm or further ahead of the tool whenand. This tensilecorresponded to the occurrence of the fore-split in Chip Type I. The tensiledetected along the path of the cutting edge decreased asand/ordecreased. Positive shear strain,, tended to be detected ahead of the tool in Type I. Negativetended to be detected ahead of the tool in Type II and III. Thesevalues were considered to be related to the elongation and shrinkage of the chip. The study confirmed the usability of the DIC method for the evaluation of cutting conditions and also to classify chip formation into chip types.
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