00:01
All right, hello, in this question we're going to talk about cnc questions.
00:03
A couple multiple choices here.
00:04
The first is, in machining of a workpiece, the material is removed by what action? so when we plug or push a drill bit or any other machining part into a material, what's happening is we're creating friction between the two surfaces, and that friction is actually causing the material to shear in half.
00:23
And so when we say shear, you can think about if you have like a piece of pasta and you torque both sides, it cracks in the middle.
00:31
That's shear strength, and that's happening within the material, just on a much smaller scale.
00:37
So the answer for one is going to be c.
00:40
Two, the depth that a tool is plunged into the surface is called the depth of the cut.
00:46
And so the answer to this is going to be b.
00:49
C is debatably also a legitimate answer.
00:54
However, when we talk about cncing and machining, we're more interested in what's happening to the piece versus how we are machining that.
01:02
So if i put a drill bit in two inches down, that's the depth of the cut.
01:07
And yes, the drill bit is two inches, but the drill bit depth can also change.
01:12
And so we call the depth that the tool is plunged in the depth of the cut, because the material is being cut.
01:19
Part, or question four, so the third one down.
01:22
Cnc machining centers do not include operations like what? milling, boring, tapping, and welding...