Общий каталог Tungaloy 2020 - 2021 - страница 1666

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Parts for ToolsTechnicalReference Net power consumption (kW) Thrust force (kN) Torque (N·m) User’s Guide - Technical Reference Drilling To o l s ● Chip shapes which tend to entangle and remedies against them ቢ Apple-peel-like chips ባ Short-lead chips ቤ Very long chips These chips are often produced in These chips are often produced in Often produced in machining mild machining mild steels or low-carbon machining stainless steels at low- steels or low-carbon steels under steels at low-speeds and low-feeds. feeds and tend to entangle to the improper cutting conditions. tool in spite of short length. Remedies Remedies Remedies Increase the cutting speed in stages Increase the feed by about 10 %. If Increase the cutting speed in stages by by 20% within the range of standard there is no effect, increase the cutting 20% within the range of standard cut- cutting conditions. If there is no effect, speed in stages by 10% within the ting conditions. If there is no effect, de- increase the feed by about 10 % as range of standard cutting conditions. crease the feed by about 10 % as the the cutting speed is raised by 20%. cutting speed is raised by 20%. P Apple-peel-like chips (Without curling) Continuously curled “C” shape chips with short lead (P). Continuously coiled long chips Cutting forces The charts below show a guideline for cutting forces. Use TDX drills on a machine with ample power and sufficient rigidity. ● Guidelines for cutting forces 16 5 100 14 LOAD ％ 412 80 10 3 60 8 6 2 40 4 0.13 mm/rev 0.13 mm/rev 0.13 mm/rev 0.10 mm/rev 1 0.10 mm/rev 20 0.10 mm/rev 2 0.07 mm/rev 0.07 mm/rev 0.07 mm/rev 0 0 0 10 20 30 40 50 60 10 20 30 40 50 60 10 20 30 40 50 60 Drill diameter (mm) Drill diameter (mm) Drill diameter (mm) Cutting speed: vc = 100 m/min Workpiece material: Alloy steel (JIS SCM440), 240HB Cutting fluid: Used L078 www.tungaloy.com