>
> It makes me wish I had a nice granite surface plate, and height
> gauge. I used to wonder what people did with those, but lately I've been
> finding lot of uses for them.
I've got a friend who makes carbon disc wheels for bicycles.
He uses one to check if the rim is perfectly round and flat.
But indeed, a granite plate is a cool tool to have - and not too expensive
(compared to other tools).
Problem is where to put it; it's heavy and not something you move around
when it is not being used.
I have a thin granite plate that I use to knead dough for my pasta :o)
A friend made a probe that measures the height, connected this to the probe
> > input and added a zeroing macro to his machine.
>
>
> How possible are zeroing macros like this in EMC2? I believe I can do it
> manually by touching-off from a manually found zero point, but I've been
> seeing a lot of automated zeroing with things like what you mention on
> YouTube lately, especially in Mach 3, and I've wanted similar.
Hm, let me quickly check the EMC2 manual ...
In section 14.19:
To make the current point have the coordinates you want (without motion),
program G92 X- Y- Z- A- B- C-
Use the probe command G38.x to measure the length of the mill, this returns
the position in parameters 5061 and further.
Doing a simple touch off measurement (with a height gauge placed on top of
your workpiece) you don't even need the result of the probe command. After
probing the current position is exactly x mm or inch above your workpiece so
you only have to do a G92 Z 2 (if your gauge is 2 inch).
With a second gauge fixed on your table, you can probe for the offset (top
of workpiece to reference of gauge) and save that value (lets say this is #5
Then replace the mill with a new tool and probe again, now this position
must be made #5 (using G92 Z #5).
Wow, this looks even simpler than I imagined (my friend uses WIN-PCNC).
I think I'll hunt on ebay for a few of those vandal proof switches to use as
height gauges.
I've been getting closer to using the tool table concept lately. I haven't
> had any fixed-length tools, though, and no automated changer, so it's been
> mostly pointless. I did finally buy a few more end-mill holders, so I can
> devote a couple to common tools, meaning I can get some repeatable tool
> lengths on the mini mill, but no more than probably 2, maybe 3 [image:
> :)]They're
> just so pricey for me for the Sherline, at $30/ea. I'm sure that's very
> low
> when compared to big machines, but it is just a hobby, after all. $30/ea.
> adds up quickly when you want handfuls of them.
>
Lucky you! My milling spindle has a fixed ER25 collet and there is no way to
change tools with a repeatable height :-(
- Rob
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
