High Speed Machining

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High Speed Machining
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What is ..Metal Cutting?
Precision
Just as needed..
Remove un-necessary parts.
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How to achieve precision metal casting?
1)Machine Accuracy of move and position
(0.001mm) Sufficient rigidity to let
cutting tool to cut at required position
2)Software Smart and intelligent to reduce tool
wear
3)Tooling Concentricity and dimensional
accuracy (0.005mm) to avoid excessive
vibration Sufficient ability to sustain under
high temperature (1100 degC) Sufficient hardness
(Hv3200) Sufficient rigidity to avoid tool
rebound during engaging
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High Efficiency Machining Trend
Introduction
'90 '91 '92 '93 '94 '95 '96 '97 '98 '99 2000-
Cutting Feed(V) (m/min)
3060 (98197SFM)
300600 (9841969SFM)
100200 (328656SFM)
HRC50
1030
60150
HRC60
30(1.8in3/min)
Material Removal Rate per minute (cc/min)
10(0.6in3/min)
50(3.0in3/min)
Coolant
Fluid
Mist
Oil
High cutting feed?High efficient machining?High
hardness machining?Dry cutting
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High Speed Cutting
Flute

• High temperature produced by sliding against each
  other
• Cutting tool can take out the high temperature by
  the chip formed
• Primary shear zone is under a plastic deformation
  and annealing status, and thus lowering the
  cutting resistance force

Workpiece
Primary Shear Zone
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How heat is dissipated during high speed cutting
5 Absorb by workpiece
Taking out by cutter
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75 Taken out by chip and mist