Общий каталог Tungaloy 2020 - 2021 - страница 1666

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  • Chip shapes which tend to entangle and remedies against them
햲 Apple-peel-like chips햳 Short-lead chips 햴 Very long chips
These chips are often produced inThese chips are often produced inOften produced in machining mild
machining mild steels or low-carbonmachining stainless steels at low-steels or low-carbon steels under
steels at low-speeds and low-feeds.feeds and tend to entangle to theimproper cutting conditions.
tool in spite of short length.

Remedies Remedies Remedies

Increase the cutting speed in stagesIncrease the feed by about 10 %. IfIncrease the cutting speed in stages by
by 20% within the range of standardthere is no effect, increase the cutting20% within the range of standard cut-
cutting conditions. If there is no effect,speed in stages by 10% within theting conditions. If there is no effect, de-
increase the feed by about 10 % asrange 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 suffi cient rigidity.

  • Guidelines for cutting forces
165100
14
LOAD ％ 480
12
10360
8
6240
40.13 mm/rev0.13 mm/rev0.13 mm/rev
0.10 mm/rev10.10 mm/rev200.10 mm/rev
2
0.07 mm/rev0.07 mm/rev0.07 mm/rev
000
102030405060102030405060102030405060
Drill diameter (mm)Drill diameter (mm)Drill diameter (mm)

Cutting speed: v = 100 m/min c Workpiece material: Alloy steel (JIS SCM440), 240HB

Cutting fl uid: Used