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I may have invented a new 5 axis fixture

implmex

Diamond
Joined
Jun 23, 2002
Location
Vancouver BC Canada
Good morning Everyone:
Yesterday I delivered and installed a new contraption for a customer.
It is designed to allow them to make small parts on their 5 axis setup...a Haas DT-2 with a TRT 100 Rotary on it.
So it is a fixture for holding thinner slabs of stock so they can be milled on one side, indexed 180 degrees and milled on the other side with tabs to hold the parts until the very end.

Here are some typical parts for which this fixture is designed:
IMG_0546.JPEG

Here is the stock from which some of these were cut:
IMG_0547.JPEG


Here is another from a different project for a different customer:
DSCN5592.JPG

And its stock:
IMG_0544.JPEG

Here is the fixture mounted on the TRT 100:
IMG_0540.JPEG
IMG_0541.JPEG
So as you can see it's pretty simple in concept; a frame surrounds a 3" diameter blank of any thickness that's too thin to allow supporting it from just one edge.
It's clamped with six peripheral screws that go through the outside of a ring that allows access to the inner 2.900" of the blank's diameter and the backside is cleared away too, so you can get to both sides of the blank with a simple index.

I've wanted to try out this gadget design for years and now's my chance.
The test we ran yesterday worked like a hot damn so I was really stroking myself.

The gadget is made of ductile iron (Durabar) in the fantasy that it will absorb vibration better than steel or aluminum will.
It can be fairly heavy (about 3 1/2 pounds, because the stock that will go into it is so light and I have 15 lb total to play with on the TRT 100.
It seems to be rock solid on a 3mm thick aluminum test blank 3" diameter...the 360 degree support makes it nice and stable...no singing cutters, no drama at all, and it's very fast to set up.
I used to make this kind of stuff by bolting the slab to a frame and then flipping the frame in the vise, or else by cutting it from the top of a chunk, slicing it off and then doing side 2 in soft jaws, or cutting a thin part from a thick chunk that could tolerate edge clamping it the vise...Royal PITA.
Sometines I'd mill the features I could and then wire cut the outline...even bigger PITA.

Now I've looked all over the internet to try to find anything like this offered commercially anywhere for years, and I've had no luck.
So did I really invent something brand new?
Or is my Google-fu deficient?

Cheers

Marcus
www.implant-mechanix.com
www.vancouverwireedm.com
 
Last edited:

Vancbiker

Diamond
Joined
Jan 5, 2014
Location
Vancouver, WA. USA
Cute, but seems to be a tiny variant of a “picture frame” or “window frame” fixture. Fairly common in use with 5 axis machines at least as far back as the mid 80s in the aerospace industry.
 

empower

Titanium
Joined
Sep 8, 2018
Location
Novi, MI
Good morning Everyone:
Yesterday I delivered and installed a new contraption for a customer.
It is designed to allow them to make small parts on their 5 axis setup...a Haas DT-2 with a TRT 100 Rotary on it.
So it is a fixture for holding thinner slabs of stock so they can be milled on one side, indexed 180 degrees and milled on the other side with tabs to hold the parts until the very end.

Here are some typical parts for which this fixture is designed:
View attachment 405052

Here is the stock from which some of these were cut:
View attachment 405054


Here is another from a different project for a different customer:
View attachment 405053

And its stock:
View attachment 405055

Here is the fixture mounted on the TRT 100:
View attachment 405056
View attachment 405057
So as you can see it's pretty simple in concept; a frame surrounds a 3" diameter blank of any thickness that's too thin to allow supporting it from just one edge.
It's clamped with six peripheral screws that go through the outside of a ring that allows access to the inner 2.900" of the blank's diameter and the backside is cleared away too, so you can get to both sides of the blank with a simple index.

I've wanted to try out this gadget design for years and now's my chance.
The test we ran yesterday worked like a hot damn so I was really stroking myself.

The gadget is made of ductile iron (Durabar) in the fantasy that it will absorb vibration better than steel or aluminum will.
It can be fairly heavy (about 3 1/2 pounds, because the stock that will go into it is so light and I have 15 lb total to play with on the TRT 100.
It seems to be rock solid on a 3mm thick aluminum test blank 3" diameter...the 360 degree support makes it nice and stable...no singing cutters, no drama at all, and it's very fast to set up.
I used to make this kind of stuff by bolting the slab to a frame and then flipping the frame in the vise, or else by cutting it from the top of a chunk, slicing it off and then doing side 2 in soft jaws, or cutting a thin part from a thick chunk that could tolerate edge clamping it the vise...Royal PITA.
Sometines I'd mill the features I could and then wire cut the outline...even bigger PITA.

Now I've looked all over the internet to try to find anything like this offered commercially anywhere for years, and I've had no luck.
So did I really invent something brand new?
Or is my Google-fu deficient?

Cheers

Marcus
www.implant-mechanix.com
www.vancouverwireedm.com
cool setup, but not really a new invention. watchmakers have been using this method of workholding for years.
 

gkoenig

Titanium
Joined
Mar 31, 2013
Location
Portland, OR
It is a great implementation though!

The window framing I've seen that is next level involves using a meltable media to support the part for the final release operations. Wax, hot melt glue, or low temperature melting point metals.

You can do seriously complex parts at lightspeed if you are set up with this technique and have the material handling to deal with the mess efficiently.
 

Zahnrad Kopf

Diamond
Joined
Apr 5, 2010
Location
Tropic of Milwaukee
It is a great implementation though!

The window framing I've seen that is next level involves using a meltable media to support the part for the final release operations. Wax, hot melt glue, or low temperature melting point metals.

You can do seriously complex parts at lightspeed if you are set up with this technique and have the material handling to deal with the mess efficiently.
We've been using this approach for years. Basically, window frame the parent material, allowing some purchase easily, then machine away most of the needed chips, fill the window back with hot glue or low temp alloy ( on hand for just this purpose ) and then finish machine ( or WEDM ) the tabs/section to "drop" the finished part. Apply low temp heat or alcohol to release the finished part.

I do like Marcus's sexy spin on the frame, though... :love:
 

Hebrewhammer8

Cast Iron
Joined
May 14, 2009
Location
Bellingham, Wa
It is a great implementation though!

The window framing I've seen that is next level involves using a meltable media to support the part for the final release operations. Wax, hot melt glue, or low temperature melting point metals.

You can do seriously complex parts at lightspeed if you are set up with this technique and have the material handling to deal with the mess efficiently.
THIS x10000

You can also do this with stuff on a 4th axis by parting off most of the way from one side, then filling the slot with high-temp hot glue, then part off from the other side, you can even add a light chamfer or de burr as well!
 

implmex

Diamond
Joined
Jun 23, 2002
Location
Vancouver BC Canada
Hi again All:
Thank you for the kind words; even though it's not a major intellectual breakthrough, I did have a lot of fun making it and I got paid for my time too, so all is good with the world.
Now that I'm semi-retired and not busting my ass anymore to make bank every day, I'm playing with my toys and I have to say it's a lot more fun than what it was.
Not so lucrative, but at my stage in life I don't have to care...my Kid (big financial responsibility as all fathers know well) makes more than I do.

So if it takes me an extra day to run a finish toolpath with a 0.005" stepover just to make it pretty, I can... so long as I don't hose down my customers in the process.

So I indulged and let the Minimill noodle away in the background...it wasn't doing anything else anyway.
I had a nice snooze, the machine did its magic and when it was done I could gaze upon its handiwork and just look at it for a while.

I've always loved what I do, and retirement from the daily crazy has been the best part of it.
So everyone who is still juggling twenty hats to make this go, has my undying respect...I'm thankfully past that.

Cheers

Marcus
www.implant-mechanix.com
www.vancouverwireedm.com
 

Hebrewhammer8

Cast Iron
Joined
May 14, 2009
Location
Bellingham, Wa
So I indulged and let the Minimill noodle away in the background...it wasn't doing anything else anyway.
I had a nice snooze, the machine did its magic and when it was done I could gaze upon its handiwork and just look at it for a while.
Honestly the quality of parts I produce while napping is way superior to any conscious machining I've done. I should add that to my website.
 

plastikdreams

Diamond
Joined
May 31, 2011
Location
upstate nj
Marcus, find solace in the fact that you did invent something in your eyes...if you didn't know it existed than you did "invent" it...until you found out it existed. But for that time...you were the proud maker of something new and original and very functional. Bravo, enjoy your success!
 

Stirling

Hot Rolled
Joined
Dec 11, 2013
Location
Alberta canada
Good morning Everyone:
Yesterday I delivered and installed a new contraption for a customer.
It is designed to allow them to make small parts on their 5 axis setup...a Haas DT-2 with a TRT 100 Rotary on it.
So it is a fixture for holding thinner slabs of stock so they can be milled on one side, indexed 180 degrees and milled on the other side with tabs to hold the parts until the very end.

Here are some typical parts for which this fixture is designed:
View attachment 405052

Here is the stock from which some of these were cut:
View attachment 405054


Here is another from a different project for a different customer:
View attachment 405053

And its stock:
View attachment 405055

Here is the fixture mounted on the TRT 100:
View attachment 405056
View attachment 405057
So as you can see it's pretty simple in concept; a frame surrounds a 3" diameter blank of any thickness that's too thin to allow supporting it from just one edge.
It's clamped with six peripheral screws that go through the outside of a ring that allows access to the inner 2.900" of the blank's diameter and the backside is cleared away too, so you can get to both sides of the blank with a simple index.

I've wanted to try out this gadget design for years and now's my chance.
The test we ran yesterday worked like a hot damn so I was really stroking myself.

The gadget is made of ductile iron (Durabar) in the fantasy that it will absorb vibration better than steel or aluminum will.
It can be fairly heavy (about 3 1/2 pounds, because the stock that will go into it is so light and I have 15 lb total to play with on the TRT 100.
It seems to be rock solid on a 3mm thick aluminum test blank 3" diameter...the 360 degree support makes it nice and stable...no singing cutters, no drama at all, and it's very fast to set up.
I used to make this kind of stuff by bolting the slab to a frame and then flipping the frame in the vise, or else by cutting it from the top of a chunk, slicing it off and then doing side 2 in soft jaws, or cutting a thin part from a thick chunk that could tolerate edge clamping it the vise...Royal PITA.
Sometines I'd mill the features I could and then wire cut the outline...even bigger PITA.

Now I've looked all over the internet to try to find anything like this offered commercially anywhere for years, and I've had no luck.
So did I really invent something brand new?
Or is my Google-fu deficient?

Cheers

Marcus
www.implant-mechanix.com
www.vancouverwireedm.com
Super similar to the dental industry for making teeth no?
 

Stirling

Hot Rolled
Joined
Dec 11, 2013
Location
Alberta canada
I feel so deflated!
Well at least I was proud for a brief moment in time.
I'm going to run with that.

Cheers

Marcus
www.implant-mechanix.com
www.vancouverwireedm.com
If you had never seen one before. Theorized it, built it, and it worked great. All while never knowing it existed. I say from a mental challange that’s a HUGE win! You thought outside of what you.know and came up with a good product.
Keep doing it.
Inventors invent things that already exist all the time. But they keep doing it. Sometimes the most innovative things come from working in a vacuum !!!
 








 
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