Download NIMS CNC Operator Test Questions & Verified Answers 2023/2024 and more Exams Machine Learning in PDF only on Docsity!
. What button below would you push to manually input and physically execute programming commands? - ANS- . What considerations should you take into account when adding soluble oil to a CNC machine? - ANS-
- What is the code for program stop? - ANS-M
- What button would you press to view the distance to go while running a program?
- ANS- A part dimension states that the depth of a bored hole must be within .001" (+/- .0005). When machining the first part how should the TLO (tool length offset) be set? - ANS- A print calls out a finished part length of 3.25 inches. How long would you cut the stock for each part if you leave 1/8" for sizing? - ANS- Given an 18 ¾" length of stock, how many 2 ½'" pieces can be cut from it? - ANS-7.5 (18.75/2.5)
NIMS CNC OPERATOR TEST QUESTIONS &VERIFIED
ANSWERS 2023/
How often should you check the lubrication levels on a machine? - ANS-Daily If you were boring a hole specified at 2.125" deep with a tolerance of +/-.001 and measured the part at 2.122" deep, what would you add or subtract from the Tool length offset to bore the hole to proper depth? - ANS- On a blueprint, what do you call a dimension in a box (boxed dimension)? - ANS- Base On a standard CNC lathe, what is the axis that controls length? - ANS-Z On a standard CNC lathe, what is the axis that controls the diameter? - ANS-x Standing in front of a horizontal machining center, what axis moves toward and away from you - ANS- The tolerance range is set on a dial indicator. If this dial indicator is checking the diameter of a part turned on a lathe, what would you add or subtract from the geometry offset (X) to machine the part at the mean dimension? - ANS- What is the code for absolute positioning? - ANS-G
Which of the buttons below would you depress if you were using M01 in a program? - ANS- While standing in front of a horizontal machining center, what is the axis that goes up and down (toward the ceiling and floor)? - ANS- Why are machines homed (or sent to "zero return" position)? - ANS- You are milling a part using cutter diameter compensation. The part measures 2.004" after the machining is done (using the .250" to 2.250 dimensions below). What must you do to the cutter diameter value to cut the part to size? - ANS-
You are turning a shaft and it measures 1.752" on the diameter, and the print calls out a 1.750" +/- .0005 diameter. What must you add or subtract in the geometry offset (X value) to make the part cut to the dimension - ANS-
. What button below would you push to manually input and physically execute programming commands? - ANS- . What considerations should you take into account when adding soluble oil to a CNC machine? - ANS-
- What is the code for program stop? - ANS-M
- What button would you press to view the distance to go while running a program?
- ANS- A part dimension states that the depth of a bored hole must be within .001" (+/- .0005). When machining the first part how should the TLO (tool length offset) be set? - ANS- A print calls out a finished part length of 3.25 inches. How long would you cut the stock for each part if you leave 1/8" for sizing? - ANS- Given an 18 ¾" length of stock, how many 2 ½'" pieces can be cut from it? - ANS-7.5 (18.75/2.5) How often should you check the lubrication levels on a machine? - ANS-Daily If you were boring a hole specified at 2.125" deep with a tolerance of +/-.001 and measured the part at 2.122" deep, what would you add or subtract from the Tool length offset to bore the hole to proper depth? - ANS- On a blueprint, what do you call a dimension in a box (boxed dimension)? - ANS- Base On a standard CNC lathe, what is the axis that controls length? - ANS-Z On a standard CNC lathe, what is the axis that controls the diameter? - ANS-x
What is the code for fixture offset (work offset #1)? - ANS- What is the code for inch mode? - ANS-G What is the code for incremental positioning? - ANS-G What is the code for linear feed (must have an F word with it)? - ANS-G What is the code for metric mode? - ANS-G What is the code for optional stop? - ANS-M What is the code for program end rewind? - ANS-M What is the code for rapid traverse? - ANS-G What is the code for spindle activation clockwise OR FORWARD? - ANS-M What is the code for tool change ON THE MILL? - ANS- What is the code for zero return? - ANS-G What is the difference between the 1.384 dimension and the .945 dimension? - ANS- What is the RPM formula for drilling? - ANS- What mode on a CNC milling center would you select to send the machine home? - ANS-G What mode would you select for changing a tool on a mill or lathe? - ANS-M What screen gives you the information for height offset value? - ANS- When should you wear your safety glasses in the shop? - ANS-Always Which of the buttons below would you depress if you were using M01 in a
program? - ANS- While standing in front of a horizontal machining center, what is the axis that goes up and down (toward the ceiling and floor)? - ANS- Why are machines homed (or sent to "zero return" position)? - ANS- You are milling a part using cutter diameter compensation. The part measures 2.004" after the machining is done (using the .250" to 2.250 dimensions below). What must you do to the cutter diameter value to cut the part to size? - ANS-
