eHow raquo Careers amp Work raquo Careers raquo Manufacturing Jobs raquo How to Operate a CNC Machine

CNC Machining Basics CNC Operator Salaries

InstructionsClean off the table and tooling after every cycle It is important to make sure that the

machine is clean and that the vise or fixture is free from chip build up If a chip gets

under a piece of raw material the dimensions of that finished part may be

compromised Chips on the flutes of a drill may also cause breakage so tooling must be

blown off after the cycle is finished

Check the tips of end mills and drills to make sure that they are still usable during the

production run A chipped end mill or drill can cause a machine overload Overloads

can damage the machine as well as the part that is being cut To prevent these types of

tooling failure an operator must not only check the tooling when the machine is

stooped but they must pay careful attention to load meters to watch for overloads

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Adjust the tooling offsets for worn tools that do not need to be replaced By stopping the

run and checking a part an operator can take control of sizing and assure that no pieces

are off The operator can also re-teach any tools that have been changed at this time

and clean off the table and get the machine ready for the cycle

Check the parts for size as they come out of the machine After a part is done and

another one is put in for machining it is always best to check very third piece or so to

make sure that are the key dimensions are on point and within the tolerances in the

How to Operate a CNC Machine

A computer numerical control (CNC) mill is capable of cutting and drilling many different

types of material including steel aluminum wood and plastic An CNC mill operator is in

charge of making sure that the parts coming out are well within the specifications dictated

by the print By cleaning the contact surfaces and making sure that tools are in good shape

he can keep a production run going without any wasted raw material This waste can cost a

manufacturing company thousands of dollars so a good knowledgeable operator is

essential

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Certain

dimensions can be fixed with tool offsets on the control of a

CNC mill or lathe

De-burr the parts to take off sharp edges Operators must de-

burr all cut edges so that the next person to handle the parts

is not cut In many cases the machining of the part is the last

process so de-burring the parts will get them ready for

powder-coating or assembly

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Computer Control Programmers and Operators

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