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Suggest me the difference between CNC milling and CNC grinding ? Answered

I have been researching CNC milling online at metal-craft.com and other sites. I want CNC milling for the removal of metal by feeding a work piece through the periphery of a rotating circular cutter. But, I did not know the difference between CNC milling and CNC grinding and which one is suitable for shaping a material, Does anyone have any suggestions for CNC machine that would meet these needs? Thanks.

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Bristol Bill (author)2009-05-28

Precision Grinding is a much more accurate process than milling,as mentioned you can grind diameters, surfaces or bores to a ten thousandth of an inch, with a much superior finish .

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Pkranger88 (author)2009-04-05

In CNC milling, a machine powers a tool with a sharp cutting edge that breaks the material apart at the point where the tool edge contacts. CNC grinding is a process where a machine powers a tool with an abrasive surface that removes material by abrasion. You can perform both methods on the same machine but in industry, separate machines are typically used. Grinders generate abrasive dusts that can destroy the precision ground bedways on a CNC machine. Precision CNC grinding is a more accurate process than CNC milling. Lathes, mills, etc all have precision ground bedways. I teach CNC programming and am a programmer professionally. If you have any questions, feel free to send me a message: brianjherr@yahoo.com

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Pkranger88 (author)Muscelz2009-05-13
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steveastrouk (author)2009-04-25

Grinding for machining, as opposed to grinding to cut off waste weld or cut through a steel beam, is extremely precise ( tolerances much less than 1/thousandth of an inch, 25 microns are easily achieved), but extremely slow, because in most cases cutting more than a few thousandths of an inch at a time is impossible. It is NOT a metal removal process for fast work ! Milling or turning is the way to go - a good lathe can turn off 1/4" (6mm ) a cut. A CNC mill can remove metal at scary speeds.

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borsodas (author)2009-04-10

milling uses a drill bit, grinding is just like it sounds wearing away on something by grinding it down. milling is most common, probably should go with that. you dont needcnc turning

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kelseymh (author)2009-04-01

The difference is what kind of tool you put onto the CNC bit (an end-mill vs. a grinder vs. a drill bit, etc.), as well as what speed you run the bit (grinding is generally a lower-speed operation than milling). Any commercial CNC machine will have the necessary adjustments to do both. At a bare minimum, you should be reading the operations manual for your machine. If you're trying to do something professional (as your keywords suggest), then you should have taken the necessary course work and apprenticeships to be a licensed machinist.

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