NIMS Milling Practice Test #1: Questions and Answers, Exams of Physics

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NIMS Milling Practice Test #1Questions with

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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? - Correct Answers4.871" If you are standing in front of a vertical CNC machining center, what direction does the X- axis travel? - Correct Answersleft to right A boxed dimension is defined as a... - Correct Answersbasic S.D.S. (Safety Data Sheet) are sheets that? - Correct AnswersDescribe 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? - Correct Answers What does the code M01 do? - Correct Answersoptional stop Match the code to the corresponding letters.... M4 - Correct Answersspindle on reverse How often should you check waylube and coolant levels? - Correct Answersevery shift What formula is used to calculate RPM? - Correct AnswersSFM times 4 divided by diameter Which display screen mode lets the operator enter tooling related data is? - Correct AnswersOffset page

What on/off mode switch works in conjunction with a M01 code in the program? - Correct Answersoptional 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? - Correct Answers+input - .0045" to tool 02 height wear offset and re-run the tool A boxed letter represents a _______. - Correct Answersdatum 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? - Correct Answers18 inches per minute Match the following codes with the corresponding letters _____G54 - Correct AnswersWork offset # What tool # should be used? T__ M S2000 M G43 H12 Z1.0 M8 - Correct AnswersT Which display screen mode lets the operator actually see the distance-to-go in the current CNC command? - Correct AnswersProgram check page. What direction do you turn the manual pulse generator or move the axis to move a tool from right to left on a cnc mill? - Correct AnswersThe X- direction What mode switch position allows you to send the machine to its reference position? - Correct AnswersZero Return +/- .005 represents a _______. - Correct Answerstolerance

After completing an entire setup and running one tool, you must shut the machine off and go home. When you come in the next day you must: - Correct Answerspower the machine up, home it, and go back through the entire setup process What is the code M00? - Correct AnswersProgram Stop What does the G00 code activate? - Correct Answersrapid motion What does the G94 code activate? - Correct Answersper minute feed What is the description of a G01 code? - Correct Answerslinear feed What on/off mode switch works in conjunction with a "/" (forward slash) in the program to skip over lines of code? - Correct Answersblock delete What mode switch position allows programs to be modified? - Correct Answersedit Before running a program that cuts a pocket 3.0" wide with a +/- .002 tolerance, what should you do to the tool's offset to prevent a scrapped part? - Correct Answersset the diameter wear offset at .0100"