CNC means Computer Numerical Control and VMC means Verticle Machining Center. There is no difference between CNC and VMC , because VMC is a type of CNC . But here we see the difference between CNC Lathe and VMC /CNC Milling.
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CNC Machine [Lathe] |
VMC machine [Milling] |
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1) Main application of CNC is turning . |
1) Main application of VMC is milling. |
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2)There is two axis X & Z |
2) There is three axis . |
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3) Workpiece is rotate . |
3) Tool is rotate . |
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4) Tool axis in CNC is X & Z . |
4) But in VMC there is only one tool axis i.e. Z |
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5) In CNC we take geometrical offset of X & Z axis . |
5) In VMC we take geometrical offset of only Z axis . |
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6) Offset selection & tool position : T0606
Where, first 06 – tool no , second 06 – offset no |
6) Offset selection & tool position : G43 H2 Z20
Where, G43- tool offset command , H2 – tool offset no , Z20 –tool position . |
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7) Tool rotation is not possible . |
7) In VMC tool is rotate . |
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8) Tool hold in turret . |
8) Tool hold in tool magazine . |
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9) During cutting tool feed support provide by turret |
9) During cutting tool feed support provide by spindle . |
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10) There is single work station due to no need of work coordinate . |
10) There multiple work station is possible . So need of work coordinate G54 –G59 |
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11) Workpiece hold in chuck . |
11) Workpiece hold in vise or fixture |