Abstract
The foundation of the cutting process rests in the full plastic deformation of the separated material (in the form of chips) at TW, for defined conditions and a defined technological M-F system. Although the cost of the cutting tool makes up only part of the total cost for producing one component piece (8 % to 12 %), they have a significant impact particularly on the following: cutting process TW, machine stand time, number of required operations, period for which the components must stay within the company and number of cutting tools. The basic hypothesis of this article focuses on the study changes in the tool wear during drilling of a new Cast Iron GTW 35-04. The problem of drilling holes with diameter D=4 to 12 mm resides in the fact that 25 to 30% of these holes do not comply with prescribed requested requirements. This article presents the results of experiments focusing on the study of the damage process in helical drills with diameter d=8.0 mm when drilling into a new Cast Iron GTW 35-04. This study also includes an analysis of accompanying phenomena in the cutting zone by measuring some selected parameters.
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