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Transcript
00:01
Review setting up our stock and W CS on AC NC Mill.
00:05
After completing this video,
00:07
we will be able to better load stock into a vice checking for clearance
00:12
set our part work coordinate systems
00:15
and verify our machine and work offsets.
00:19
Our next project together is to make the front half of this brake caliper assembly.
00:24
Now,
00:24
this part is much more complex than the piston
00:27
we made earlier using quite a few more tools.
00:30
The way we set up our part should start to feel familiar though.
00:33
We are getting better at this.
00:36
We've set up a vice on our machine table,
00:38
having cleaned everything first stoning things to check for and remove burs.
00:43
We indicated our vice in
00:45
and loaded up some hard jaws
00:47
and we're at the point now where we need to choose what size parallels to use
00:51
and load up some stock.
00:53
Our setup sheet tells us everything that we need to know.
00:56
It tells us that our stock is two inches by four inches by 1.75 inches tall.
01:04
It tells us that our minimum Z the deepest, any one tool will go
01:08
is Z minus
01:14
if our stock is 1.75 inches tall and at least one
01:18
of our tools goes 1.465 deep from our Z zero,
01:22
which is the top of our stock.
01:24
Then we cannot hold on to more than 0.285 inches of material
01:29
in our vice or our tools will machine into our vice jaws.
01:33
Anytime we run a part in hard jaws with parallels,
01:36
we are asking ourselves these two questions.
01:39
Am I holding on to enough material?
01:41
We don't want to hold on to so little that the part could be thrown.
01:44
And number two are any of our tools going so deep that they
01:48
could run into our expensive hard jaws or into our part stop.
01:53
Now we use 1.5 inch tall parallels like the setup sheet recommended
01:58
and then we check our clearances using our calipers set to our
02:01
minimum Z representing the deepest any of our tools will cut.
02:06
If we are using a part stop, we make sure that it too is out of the reach of our tools.
02:11
When loading our stock, we remove any excess burrs that might get in our way
02:15
and push the stock down into our vice and against our stop before firmly tightening.
02:21
Now, tapping our part down with a soft base hammer is never a bad idea.
02:25
This helps to make sure that our part
02:27
doesn't come out of the jaws during first operations
02:31
and tapping a part down during a secondary operation.
02:34
When loading that part in soft jaws can give
02:36
us more accurate repeatable Z depths as well.
02:39
Better seeing that part,
02:42
we set our G 54 W CS one to the back,
02:45
left corner of our stock using our 3D sensor to set our G 54 X,
02:52
then our G 54 Y
02:55
and then we'll set our G 54 Z to zero.
02:59
We will be setting our tools on top of our part, which is why we can leave our G 54 Z
03:04
at zero.
03:06
When manually setting tools without a probe,
03:08
our G 54 Z is the distance from our W CS Z zero location.
03:13
And where we set our tools, which is at the same level. In this case,
03:18
our work coordinate zero is now set to the same spot
03:20
in both our C A system and on our machine.
03:23
So we can move on to setting our tools
03:26
in other videos. We showed how to set up our tools in er call it chucks.
03:31
We keep everything clean and dry and we check the tool exposure,
03:35
the stick out for each tool.
03:36
A tool needs to stick out at least as far as
03:40
the minimum Z for that tool on our setup sheet.
03:42
But not too long. If our tools are needlessly long, we could get chatter,
03:48
the flutes on our tools typically need to be at least as long as our minimum Z depth.
03:52
And again, our minimum Z is the lowest Z position. A tool will be going
03:58
for an end mill. Our flute length is considered our length of cut.
04:02
We've set up all of our tools,
04:03
double checking each stick out against our setup sheet done.
04:08
Now, this tool,
04:10
our T four uses a completely different style holder than we might have seen before.
04:15
This is called a drill chuck and they are incredibly easy to use.
04:19
We just put the holder in a tool. I
04:21
rotate the hood until our three jaws tighten against our drill bin.
04:25
We never clamp on the flutes of our drills.
04:27
We never use this style of holder for end mills and we really
04:30
want to avoid using this style of holder on solid car by drills.
04:35
They are really hard and they might slip.
04:37
Now an er,
04:38
call it set up with a drill will typically have less run out than our drill chuck.
04:43
But I still like these drill chucks
04:46
where one holder can accommodate a whole range of drill bits,
04:49
the entire drill set without any additional calls.
04:53
The more wobble, the more run out a tool has in a holder,
04:57
the more likely it is to create oversized holes or to wear out faster.
05:01
So that's just something to keep in mind
05:04
we'll load each tool into the machine, matching the T number on our setup sheet
05:08
and then touch each one of them off. For each tool, we will jog down above our stock
05:13
change to a smaller increment and slowly jog towards the stock
05:17
while moving our paper back and forth until it is pinched,
05:21
we'll then move to our tool offset page.
05:23
Making sure the correct tool number row is
05:25
highlighted before pressing the tool offset measure button.
05:29
Now we repeat this process for each tool.
05:34
If any part of that was unclear,
05:35
go back and watch the sections on how to set up AC NC mill,
05:39
watching the videos on tool and work offsets.
05:44
Now, all of our tool and work offsets are set.
05:46
So we're gonna load up a pointed tool like our tool for drill here
05:50
and use it to verify our entire setup.
05:54
We will once again pull out our trusty post it note with
05:57
the verification G code we learned in the last few videos,
06:01
we'll enter it into MD I
06:03
and run it line by line with lowered rapids.
06:07
Our drill T four has moved directly above the back left corner of our stock,
06:12
right where we have set our G 54 W CS 10 location,
06:17
letting us know that our offsets have all been set correctly.
06:21
Our set up is come complete.
06:23
Our next step would be to load up our program, our 2001 dot NCG code in our case,
06:30
run things in graphics and run our part, but that is for our next session.
Video transcript
00:01
Review setting up our stock and W CS on AC NC Mill.
00:05
After completing this video,
00:07
we will be able to better load stock into a vice checking for clearance
00:12
set our part work coordinate systems
00:15
and verify our machine and work offsets.
00:19
Our next project together is to make the front half of this brake caliper assembly.
00:24
Now,
00:24
this part is much more complex than the piston
00:27
we made earlier using quite a few more tools.
00:30
The way we set up our part should start to feel familiar though.
00:33
We are getting better at this.
00:36
We've set up a vice on our machine table,
00:38
having cleaned everything first stoning things to check for and remove burs.
00:43
We indicated our vice in
00:45
and loaded up some hard jaws
00:47
and we're at the point now where we need to choose what size parallels to use
00:51
and load up some stock.
00:53
Our setup sheet tells us everything that we need to know.
00:56
It tells us that our stock is two inches by four inches by 1.75 inches tall.
01:04
It tells us that our minimum Z the deepest, any one tool will go
01:08
is Z minus
01:14
if our stock is 1.75 inches tall and at least one
01:18
of our tools goes 1.465 deep from our Z zero,
01:22
which is the top of our stock.
01:24
Then we cannot hold on to more than 0.285 inches of material
01:29
in our vice or our tools will machine into our vice jaws.
01:33
Anytime we run a part in hard jaws with parallels,
01:36
we are asking ourselves these two questions.
01:39
Am I holding on to enough material?
01:41
We don't want to hold on to so little that the part could be thrown.
01:44
And number two are any of our tools going so deep that they
01:48
could run into our expensive hard jaws or into our part stop.
01:53
Now we use 1.5 inch tall parallels like the setup sheet recommended
01:58
and then we check our clearances using our calipers set to our
02:01
minimum Z representing the deepest any of our tools will cut.
02:06
If we are using a part stop, we make sure that it too is out of the reach of our tools.
02:11
When loading our stock, we remove any excess burrs that might get in our way
02:15
and push the stock down into our vice and against our stop before firmly tightening.
02:21
Now, tapping our part down with a soft base hammer is never a bad idea.
02:25
This helps to make sure that our part
02:27
doesn't come out of the jaws during first operations
02:31
and tapping a part down during a secondary operation.
02:34
When loading that part in soft jaws can give
02:36
us more accurate repeatable Z depths as well.
02:39
Better seeing that part,
02:42
we set our G 54 W CS one to the back,
02:45
left corner of our stock using our 3D sensor to set our G 54 X,
02:52
then our G 54 Y
02:55
and then we'll set our G 54 Z to zero.
02:59
We will be setting our tools on top of our part, which is why we can leave our G 54 Z
03:04
at zero.
03:06
When manually setting tools without a probe,
03:08
our G 54 Z is the distance from our W CS Z zero location.
03:13
And where we set our tools, which is at the same level. In this case,
03:18
our work coordinate zero is now set to the same spot
03:20
in both our C A system and on our machine.
03:23
So we can move on to setting our tools
03:26
in other videos. We showed how to set up our tools in er call it chucks.
03:31
We keep everything clean and dry and we check the tool exposure,
03:35
the stick out for each tool.
03:36
A tool needs to stick out at least as far as
03:40
the minimum Z for that tool on our setup sheet.
03:42
But not too long. If our tools are needlessly long, we could get chatter,
03:48
the flutes on our tools typically need to be at least as long as our minimum Z depth.
03:52
And again, our minimum Z is the lowest Z position. A tool will be going
03:58
for an end mill. Our flute length is considered our length of cut.
04:02
We've set up all of our tools,
04:03
double checking each stick out against our setup sheet done.
04:08
Now, this tool,
04:10
our T four uses a completely different style holder than we might have seen before.
04:15
This is called a drill chuck and they are incredibly easy to use.
04:19
We just put the holder in a tool. I
04:21
rotate the hood until our three jaws tighten against our drill bin.
04:25
We never clamp on the flutes of our drills.
04:27
We never use this style of holder for end mills and we really
04:30
want to avoid using this style of holder on solid car by drills.
04:35
They are really hard and they might slip.
04:37
Now an er,
04:38
call it set up with a drill will typically have less run out than our drill chuck.
04:43
But I still like these drill chucks
04:46
where one holder can accommodate a whole range of drill bits,
04:49
the entire drill set without any additional calls.
04:53
The more wobble, the more run out a tool has in a holder,
04:57
the more likely it is to create oversized holes or to wear out faster.
05:01
So that's just something to keep in mind
05:04
we'll load each tool into the machine, matching the T number on our setup sheet
05:08
and then touch each one of them off. For each tool, we will jog down above our stock
05:13
change to a smaller increment and slowly jog towards the stock
05:17
while moving our paper back and forth until it is pinched,
05:21
we'll then move to our tool offset page.
05:23
Making sure the correct tool number row is
05:25
highlighted before pressing the tool offset measure button.
05:29
Now we repeat this process for each tool.
05:34
If any part of that was unclear,
05:35
go back and watch the sections on how to set up AC NC mill,
05:39
watching the videos on tool and work offsets.
05:44
Now, all of our tool and work offsets are set.
05:46
So we're gonna load up a pointed tool like our tool for drill here
05:50
and use it to verify our entire setup.
05:54
We will once again pull out our trusty post it note with
05:57
the verification G code we learned in the last few videos,
06:01
we'll enter it into MD I
06:03
and run it line by line with lowered rapids.
06:07
Our drill T four has moved directly above the back left corner of our stock,
06:12
right where we have set our G 54 W CS 10 location,
06:17
letting us know that our offsets have all been set correctly.
06:21
Our set up is come complete.
06:23
Our next step would be to load up our program, our 2001 dot NCG code in our case,
06:30
run things in graphics and run our part, but that is for our next session.
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