Haas mill advice

Ditto what he said, except,

Interesting. My guess is that the VF-5 is designed this way so that
you can mount fixtures on the machine and not loose operating volume?

-Martin

 

He never said that was all the machine is going to do.

BTW, your cut line is broken.

 

If you can wait for the show, you can probably negotiate a better deal
there.

It's hard to say what else you should look at without knowing what type of
work/tolerances you do. In that price range you could certainly look at
Fadal, Milltronics, Hurco, Sharp, and the low end offerings from Okuma,
Mori, Mazak, etc..

 

Such as by dropping the key in a slot ...

One hole does not align any axes.

BTW, What happens with a largish Aluminum plate
on a cast iron surface as the temp changes?
Where was zero again?

 

Happens now & then as I type them one by one
as sometimes I don't want one.
Tired fingers get dyslexic too.

 

Then your comments you justified on that assumption
are invalid from the get, right?

 

Add/bolt key(s) in slot(s) in subplate first; yes to t-slots.

Do you have rotary comp?
Often other reasons too & keys can transfer some of the
cutting loads as well.

 

On Wed, 18 Feb 2009 09:57:32 -0800, BottleBob

<snip>
Quick question to our money players.

Why not use tapered dowel pins, possibly threaded for easy
extraction? That way you get the best of both possible worlds.
Easy installation/removal of the sub-plate/fixture, and easy
[re]alignment.
for example
http://www1.mscdirect.com/CGI/GSDRVSM?PACACHE=000000085293790
http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=1955&PMITEM=73079238&PMCTLG=00



Unka' George [George McDuffee]
-------------------------------------------
He that will not apply new remedies,
must expect new evils:
for Time is the greatest innovator: and
if Time, of course, alter things to the worse,
and wisdom and counsel shall not alter them to the better,
what shall be the end?

Francis Bacon (1561-1626), English philosopher, essayist, statesman.
Essays, "Of Innovations" (1597-1625).

 

===========
Thanks for the feedback. I understand. Seemed like such a good
idea at the time...


Unka' George [George McDuffee]
-------------------------------------------
He that will not apply new remedies,
must expect new evils:
for Time is the greatest innovator: and
if Time, of course, alter things to the worse,
and wisdom and counsel shall not alter them to the better,
what shall be the end?

Francis Bacon (1561-1626), English philosopher, essayist, statesman.
Essays, "Of Innovations" (1597-1625).

 

Nope.

 

=========
You might also find these urls helpful
http://www.practicalmachinist.com/vb/forumdisplay.php?s=&daysprune=1000&f=43
and
http://www.haascnc.com/custserv_training.asp#lathe
and down load the manuals, workbooks, etc. in pdf format.


Unka' George [George McDuffee]
-------------------------------------------
He that will not apply new remedies,
must expect new evils:
for Time is the greatest innovator: and
if Time, of course, alter things to the worse,
and wisdom and counsel shall not alter them to the better,
what shall be the end?

Francis Bacon (1561-1626), English philosopher, essayist, statesman.
Essays, "Of Innovations" (1597-1625).

 

You might also find these urls helpfulhttp://www.practicalmachinist.com/vb/forumdisplay.php?s=&daysprune=10...

Good resource.

Thank you,

-Martin

 

Who needed the 10 ton plate?
BTW, Anybody using Magnesium tooling plate?

Ya can't use the hoist, eh?

Good idea to use a slight taper or radius on the corners of the
keys.

Nice to have eyebolt over center of mass.

BTW, You can also slide them/precision blocks into the
T-slots & push the plate's back edge against them but it
might reduce your cube a bit.
Lots of options.

Sometimes not enough or too quickly.

After you banged it all up with that fork lift?

Who is pushing that 10 ton plate about? How?

Or you could just have put it back in the right place in the
first place, tested & reloaded old/stored offsets.

Which ones moved the most as that plate changed?

And toss the Aluminum one?

Tired, way behind, rushed & busy.

 

You could use one plate atop another & produce proper precision
tapered hole in both.
Add more/other top plates for other parts with a tapered hole such
that you well-controlled how deep you reamed. Solves the problem
of the tapers matching up.
For the other hole use a diamond locating pin.
That should constrain all degrees of freedom.

 

Thanks everyone for offering varied opinon and guidance on this
matter. Today we closed the deal on our new VMC. This is what we
got:

VF-3SS
12,000 RPM direct drive spindle
24 tool high-speed side-mount tool changer
1400ipm rapids
USB
55 gallon coolant system
Rigid tapping
Chip conveyor
Programmable coolant nozzle
Wireless probing system
Wireless toolsetting probe
Work offset, Macros, Spindle orientation
Coordinate rotation and scaling
16MB memory
High speed machining with look-ahead
4th axis wiring and 210mm servo rotary table with tooling block
Early power failure detection
Auxiliary coolant filter
24 pull studs (CT40)

At the moment it looks like we might go for MasterCAM but a SolidCAM
evaluation is pending next week.

Thanks again,

-Martin

 

Good choise as the base of the VS3 is the same as on as the larger VS4 &
5. Haas has been trying to "thin down" castings (some are even imports
now btw). So you have the largest base by scale theoretically.

If your a Solidworks house, and have no cam history, look at the systems
that run natively inside of SW. You will be MUCH better off down the
road. Techsoft, HSMworks are two that come to mind. Ask your SW rep or
Google. Mastercam and a couple others are now offering integration into
Solidworks but unless they've changed their interface, you'll be sorely
disappointed when switching between Cad and Cam.

 

Gee, you just implied the plate was too heavy.

Tooling plate is for tooling.

I read it too.
Then you did not need to complain about the forklift, right?
Which one way do you want it?

Nor a bad one.
There are many ways to do things.

If it sticks slightly you just tap or push on the other side & it
comes right out.

BTW, A manual hoist works a lot better than a power one
for this. More control & fine adjustment, last I knew.

That's a keeper.

But banging that plate about with a forklift works great, eh?

Gee, so keys do work .... but I doubt you got any wringing.

Many variables & keys are often a good choice.

Not all that heavy after all, eh?

How would you know that? Perhaps yours is the bad one.

Sometimes you can key that way too.

Or that you have a machine ...

Retirement may not be for you.
Go help the wingers find their "WMDs" & pay back their debts.

 

One assumes you generally keep the bottom plate on the machine
& plan your families of parts to use a system with those fixtures.

Indicating & setting takes time & might be error-prone.

 

"m" <> a écrit dans le message de ...

As a total newbie in that kind of machining (and i'm in R&D anyway), i've
been following the conversation with great interrest.
I'd like to have some explanations on a couple of things:

Does it means that there is some kind of device that prevents collisions
when machining? How does it work?

What does it do, and how?

TIA
JM

 

That may be the shop you worked in.

No hoist or forklift needed, eh?
I don't suppose any of your vises are keyed either, eh?