达乌尔黄鼠爪趾几何特征分析

在对各种材料实施切削作业时，优化作业工具几何形状，减少被切削材料对切削工具的粘附，降低工作阻力，提高工作效率，是人们总在关注的问题。本文选择具有优良挖掘和脱土降阻功能的达乌尔黄鼠爪趾为对象，对其爪趾形态进行了观测和分析，发现该种动物爪趾触土面普遍具有变曲率的特征，并以曲率为基础，对切削工具可能存在的切削面作了分析，以期从仿生学的角度为切削工具的最优化设计提供新的思路。

Analysis of Geometry Characteristics for Spermophilus Dauricus Claws

Operations such as cutting, digging, drilling, shaving and shoving are often performed while dealing with various kinds of materials like soil or metal by human beings.How to optimize the geometric shape of operating tools to reduce the adhesion against operated materials and reduce the operating resistance,thus enhancing operation efficiency and decreasing the cost of operations,are always paid more attention by human beings.Spermophilus dauricus(a kind of field mouse), which possess outstanding abilities of digging,reducing resistance and anti-adhesion against soil,is chose as research object in this paper.The geometric characteristics of its claws' shapes,especially the contour lines of the claws' longitudinal sections,are observed and analyzed with a computer image micro-analysis system.It is discovered that the toes of this kind of animal's claws generally have the feature of changing curvature along their soil-engaging surfaces.The possible cutting surfaces of cutting tools are analyzed based on the concept of curvature so that new design concepts can be derived using bionic methodologies.