Общий каталог Tungaloy 2020 - 2021 - страница 1664

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Parts for ToolsTechnicalReference HigherFeedLower User’s Guide - Technical Reference Drilling To o l s Chip shapes ● Chip shape produced with central insert • A conical coil shape whose apex point coincides with the rotating cen- ter of the drill is the basic shape. The chips are broken into small sec- tions with increases in feed. However, excessively high feed causes the chip to increase in thickness and develops vibration which dis- turbs stable machining. • In TDX drills, marked chips shown below are the most preferable shapes. This type of chip is broken into adequate lengths by centrifu- gal forces when used in tool-rotating condition. On the other hand, when used in work-rotating condition such as on a lathe, a continu- ously long chip is often produced without entangling. ● Relation between chip shapes and feeds (In the case of central insert) Carbon steels, alloy steels, etc. Low carbon steels, stainless steels, etc. ● Example of chip shape in work-rotating applications (In the case of central insert) (ø26, JIS S45C, Vc = 100 m/min, f = 0.1 mm/rev) 100 mm L076 www.tungaloy.com