充电电钻与电钻形成痕迹研究

On the research of the formation of rechargeable electric drill and electric drill marks

钻削痕迹的检验鉴定是工具痕迹检验中一个重要组成部分,由于工具制作技术的迅速发展,新型工具的不断出现要求检验工作也要随之发展和提高。运用痕迹的稳定特征,正确评断特征的异变规律,掌握充电电钻与电钻在切削过程中交替、循环、反复的运动规律,区别两种钻形成的痕迹,以证实犯罪工具,为侦查破案发挥应有的作用。

The inspection of Drilling traces is an important part of tool marks testing. Due to the rapid development of production technology, the continual emergence of new tools will ask for a development of inspection. We can master the rechargeable electric drill and electric drill＇s turning, cycling and repeating law of exercise in the cutting process by using the stable characteristics of trace to judge the mutation characteristic, tell the differences of two teaces and confirm the crime tool.