in cnc we have to change the tool for different operations in vmc automatic change of tool is done
Can't beat the Siemens!
NC is numerically controlled (hard wired) and CNC is computer numerically controlled.
a dedicated computer control the machine tool in CNC and in DNC a no: of machines are controlled by a central computer.
CAD stands for Computer Aided Design. CNC stands for Computer Numeric Control, a synonym of CAM, which is Computer Aided Manufacture.
Re: Difference between CNC & NC machinesIn a Numerical Control machine, the program is fed to the machine through magnetic tapes or other such media. The original NC machines were essentially basic machine tools which were modified to have motors for movement along the axes. In a Computer Numerical Controlled machine, the machines are interfaced with computers. This makes them more versatile in the sense that, suppose a change in dimension of a part is required. In a NC machine, you would have had to change the program in the tape and then feed it to the machine again. But in a CNC machine, you just change a variable in the computer and your modification is done!!
Can't beat the Siemens!
NC is numerically controlled (hard wired) and CNC is computer numerically controlled.
a dedicated computer control the machine tool in CNC and in DNC a no: of machines are controlled by a central computer.
CNC denotes Computer Numerically Controlled. so, a cnc machine has all its functions ie: speed, axis movement, tooling selection ran by the computer. High speed is just that, so you can get a high speed CNC.
Vmc is the best & there is no doubt about it.
vmc CD is enough of preparation
I would go for the new one. It will still have a warranty. It should make any difference worth it.
As of July 2014, the market cap for Vulcan Materials Company (VMC) is $1,447,990,088.15.
A drill/tap center is a specialized VMC. They are typically relatively small, 30 taper machines - lightweight and very fast. They excel in applications with light milling, multiple tools, and short cycle times. The surfacing, drilling, and tapping of casting mating surfaces is a good example. Check out this article for some more info on the link below.
lola
nc is numerical control cnc is computer numerical control nc came before cnc in the form of tape reading machines in which the tape was punched with holes to indicate positions. cnc began when microprocessors were used to interpret the data and it was stored digitally rather than in tapes.
CAD stands for Computer Aided Design. CNC stands for Computer Numeric Control, a synonym of CAM, which is Computer Aided Manufacture.