Excellent Free CNC Programming Course

[mrainey]

I don't know if this site has been mentioned before, so ...

This is an extensive online course given by Purdue University. I watched a few of the lessons and was quite impressed. It covers machining centers and lathes.

You'll need RealPlayer for the audio and video features.


http://technology.calumet.purdue.edu/met/mfet/275/

[cbass]

The site is new to me. Thanks for the heads up...

Carlo

[kkentzyo]

dear friends,

[kkentzyo]

Dear friends
I need the fanuc softwares for engine lathe and cent.machining type machine tools with simulator facilities in order to see the machining results .As a senior mech. engineer Iam quate well in machining set up practice and feed rates etc.but I do need G cods and way of preparing machining programsfor parts on turning and cent.machinig facilities, your help will be more than wellcome, kantz cekic

[kkentzyo]

OLA....or HELLO..Thanks for your indication, ....yas the course is pretty indicative but I need a (free downloading ) fanuc programing for lathes and CENT.MACH. with simulation software where I can build my program and see the results....I do have similar text in SIMMENS(SINUTRONIC) which includes THE panel of the machine as well as if you are front of the machine.....looking something simmilar.....again thanks for your help.....adios from Buenos-Aires HAVE A NAICE DAY

[Oldmanandhistoy]

Mrainey,

Thanks for posting the link; it’s just what I’ve been looking for. But having taken a quick look here http://technology.calumet.purdue.edu...iles/frame.htm
It has me a little confused, as the description seem to contradict the arrow diagram. The description seems (to me at least) that machine 0,0,0 would be head all the way up, and X,Y, back right corner as you look at it. The arrow diagram seems to suggest head up and the front left corner of the table as 0,0,0.

EDIT:The link doesn’t take you to the page I am talking about it should have taken you to “Machining Centre Coordinate System” on the left of the page.END EDIT.


John

[Oldmanandhistoy]

^^^^^^^^^^
No need to answer this as looking at other pages on the site its telling me that 0,0,0 is tool up and left front corner of table.

John

[gar]

080219-0912 EST USA

Slide #8 is certainly not very useful as an instructional tool. In fact it gives the wrong impression. The vector drawing needs the y axis rotated 90 deg counterclockwise around Z to correspond to the perspective of the machine drawing, or change the machine drawing orientation. Further on some machines the machine absolute zero may be somewhere else than as shown.

As shown it corresponds with a HAAS VF-x except that Z=0 absolute is the head in tool change position, not the top most position.

.

[gar]

080219-0935 EST USA

John:

As shown the table is in the X=0, Y=0 absolute position (machine coordinate) and that makes 0, 0 the right rear corner of the table.

I would much prefer a presentation format where a given subject area was one page that you vertically scroll thru.
.

[Oldmanandhistoy]

Originally Posted by gar 080219-0935 EST USA John: As shown the table is in the X=0, Y=0 absolute position (machine coordinate) and that makes 0, 0 the right rear corner of the table. I would much prefer a presentation format where a given subject area was one page that you vertically scroll thru. .

Looking at some of the parts drawings they have 0,0,0 as the front left corner and measure hole position from there, this is very confusing.

[Oldmanandhistoy]

Originally Posted by gar 080219-0935 EST USA I would much prefer a presentation format where a given subject area was one page that you vertically scroll thru. .

They do that as well with the “Printable Handouts”.

[mrainey]

I think the arrows are there merely to give directional indicators relative to program zero - the direction the tool appears to move.

It's true that the paragraph beside the picture of the machine doesn't apply to all machines. It's definitely a "Haas-centric" course.