Machinist Knowledge

Name (use same name you used on application):

Email (use same email you used on application):

You determine that a Feed rate for a particular tool must be 5.0 inches per minute (or 5 millimeters per minute in the metric mode). The correct designation in the program would be:

You are running a proven program (one run before) for the first time in a new setup. You are cautiously allowing the first tool to come into its approach position when you determine that the tool is not going where it is supposed to. The most likely reason is:

What mode switch position allows programs to be modified?

What mode switch position lets you move the machine axes manually?

Which on/off switch works in conjunction with an M01 in the program?

The Feed rate Override switch lets the operator control the machine’s movement rate during cutting commands

The button used to temporarily stop the CNC cycle is:

The button that will reactivate the CNC program after temporary stoppage is:

The display screen mode that lets the operator actually see the CNC program is the:

You are running the first workpiece with a proven program. Tool number five is a milling cutter machining a pocket to a very tight depth tolerance. You should:

The display screen mode that lets the operator enter tooling related data is the:

As part of the machine start up procedure, you must send the machine to its zero return (home) position:

There is always some way to adjust offsets to ensure that every tool in every program will machine with a little excess stock. Meaning (if the program is correct) there is never an excuse to scrap the first workpiece in a production run.

While there is never a good excuse for a crash, if you do have a mishap and your machine crashes, you should:

As you are verifying a new program that has never run before, you find what you consider to be a serious mistake in the program’s motions. You should:

A program stop is encountered and the machine stops. However, you are not sure why the program stop is in the program. You should

Spindle speed for machining centers is always specified in:

When viewing a vertical machining center from the front, the X Axis is forward/back, Y is left/right, and Z is up/down.

You need to manually make a tool change to place tool number one in the spindle. However, the machine has no manual buttons or switches for making tool changes. You must:

You are running the first workpiece with a proven program (one that has run before). The first four tools cut just fine. However, the fifth tool (an end mill machining a pocket) does not cut quite deep enough. It is most likely that:

You are verifying a new program, cautiously allowing each tool to approach the workpiece using single block and dry run. Tools one and two run just fine. However, as tool three gets within about one inch of the work surface, you are worried that it may not stop in its correct position, so you press feed hold and check the DISTANCE-TO-GO page on the display screen. Sure enough, the distance to go reads a value of Z-3.5435 inches. It is likely that:

You are running the first workpiece with a proven program (one that has run before.) Tool number four is a milling cutter that machines a pocket. The pocket is supposed to be 0.5000 in +-0.001 deep. However, after tool four mills the pocket, you find the pocket to be 0.4970 deep. You must: