NIMS Milling Practice Test Questions with 100% Correct Answers
National Institute for Metalworking Skills NIMS Milling Practice Test If a dimension on a drawing is 4.868" with a tolerance of +/- .003", what is the largest the dimension can check and still be in tolerance? - ANS: 4.871" If you are standing in front of a vertical CNC machining center, what direction does the X-axis travel? - ANS: left to right A boxed dimension is defined as a... - ANS: basic S.D.S. (Safety Data Sheet) are sheets that? - ANS: Describe the chemicals and materials in the shop. How many 4-7/8 inch long rods can be cut from a rod with a total length of 97-1/2 inches? - ANS: 20 What does the code M01 do? - ANS: optional stop Match the code to the corresponding letters.... M4 - ANS: spindle on reverse How often should you check waylube and coolant levels? - ANS: every shift What formula is used to calculate RPM? - ANS: SFM times 4 divided by diameter Which display screen mode lets the operator enter tooling related data is? - ANS: Offset page What on/off mode switch works in conjunction with a M01 code in the program? - ANS: optional stop You are running the first workpiece on a proven program (one that has been run before). Tool 02 is the finishing tool that machines a pocket .437" deep +/- .003". When you measure the part, it checks .4325". What must you do to correct the error? - ANS: +input -.0045" to tool 02 height wear offset and re-run the tool A boxed letter represents a _______ . - ANS: datum If you want to use a 1.0" diameter 2-flute end mill running at 3000 RPM, what feed rate should you run at to achieve a .003" per tooth chip load? - ANS: 18 inches per minute Match the following codes with the corresponding letters _____G54 - ANS: Work offset #1 What tool # should be used?
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