CNC programming

What is a block in CNC programming

• A single line of Code

• A single line of G-Code

• A single line of M-Code

• A specific tool used to calibrate the machine before cutting

What is a canned cycle in CNC milling?

• A complex cycle defined by a single block of code

• A method for storing old programs in the machine’s memory for future use

• A safety protocol that shuts down the machine automatically

• A program used to control the coolant flow in the CNC machine

What does the dwell function (e.g., G04) do in CNC milling?

• It increases the spindle speed gradually to prevent tool breakage

• It changes the tool orientation for angled cuts

• It allows the tool to pause at a specific point for a set amount of time

• It automatically switches the tool based on material hardness

What is required after the end of each block in CNC programming

• A semicolon (;) to separate it from the next block

• A line number to indicate the next block

• End Of Block(EOB)

• A pause command to stop the machine momentarily

What's feed Rate in CNC milling?

• The rate at which coolant is delivered to the cutting area

• The frequency of tool changes during a machining cycle

• The speed at which the spindle rotates during cutting

• Velocity at which the axis will move

What's a modal code in CNC Programming?

• A code that remains active until a code from the same group is called

• A code that temporarily overrides safety protocols

• A code that only runs once and then resets automatically

• A code that only remains active in the block is inputted in

What's a origin in milling?

• The temperature at which the cutting tool begins to wear

• The first tool loaded into the CNC machine

• The Point in a coordinate system where X,Y and Z are zero

• The point where the cutter will start to cut first

How to calculate the RPM of the Cutter in CNC milling?

• Divide the tool diameter by the feed rate

• Multiply the number of flutes by the depth of cut

• Add spindle speed and cutting speed together

• Divide the cutting speed (SFM) by the cutter diameter and multiply by 3.82 (Correct)

What group of codes are preparatory Functions?

• M-Codes

• G-Codes

• N-Codes

• T-Codes

What group of Codes are Miscellaneous Functions?

• G-Codes

• P-Codes

• M-Codes

• D-Codes