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1538 Waterjet Samples

Jon Jack

By: Jon Jack
New: 01-02-2013 14:26
Updated: 01-02-2013 14:26
Views: 2512 times


1538 Waterjet Samples

1538 received their waterjet order Wednesday morning. Here's a couple of parts.

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01-02-2013 16:46

Lil' Lavery


Unread Re: pic: 1538 Waterjet Samples

Sheesh guys, how many robots are you building?



01-02-2013 16:52

AdamHeard


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Where do I sign up for my free samples?

I think I'll take one of each.



01-02-2013 20:47

Navid Shafa


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Were these cut on an Omax?



02-02-2013 01:20

AdamHeard


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Quote:
Originally Posted by Navid Shafa View Post
Were these cut on an Omax?
This has to be the third or fourth post I've seen you ask this... Just curious, why?

Our waterjetting is done on an Omax (to save you time when we eventually post pics )



02-02-2013 03:34

sanddrag


Unread Re: pic: 1538 Waterjet Samples

You guys are lucky. We're cutting ours on a CNC router, and it's taking quite a while. We're looking at about 4-5 hours for a diamond pattern baseplate.



02-02-2013 04:08

R.C.


Unread Re: pic: 1538 Waterjet Samples

Quote:
Originally Posted by sanddrag View Post
You guys are lucky. We're cutting ours on a CNC router, and it's taking quite a while. We're looking at about 4-5 hours for a diamond pattern baseplate.
Odd.

We have a pretty intricate design and it only took 35 minutes on our router. And that was me being super lazy. Could prolly get it faster.

We did a similar BP to what we've done the past few years.

Sincerely,

-RC



02-02-2013 05:53

=Martin=Taylor=


Unread Re: pic: 1538 Waterjet Samples

Quote:
Originally Posted by R.C. View Post
Odd.

We have a pretty intricate design and it only took 35 minutes on our router. And that was me being super lazy. Could prolly get it faster.

We did a similar BP to what we've done the past few years.

Sincerely,

-RC
We gave the freshman brand new files this year.



02-02-2013 11:53

sanddrag


Unread Re: pic: 1538 Waterjet Samples

Quote:
Originally Posted by R.C. View Post
Odd.

We have a pretty intricate design and it only took 35 minutes on our router. And that was me being super lazy. Could prolly get it faster.

We did a similar BP to what we've done the past few years.

Sincerely,

-RC
What is your material and thickness, cutter type, spindle speed feedrate, and stepover?

We are running 1/8" thick 6061-T6 plate with a 1/4" 3-flute ZrN coated variable helix endmill, 16,0000 RPM, 30 IPM, 35% stepover, dry cutting, and it's cutting nicely. We tried pushing it faster and did not have favorable results. Also, our router is only a 2.5 HP machine. Also, we're turning all the pockets to chips. No solid pieces left behind.



02-02-2013 11:59

Akash Rastogi


Unread Re: pic: 1538 Waterjet Samples

Quote:
Originally Posted by AdamHeard View Post
This has to be the third or fourth post I've seen you ask this... Just curious, why?

Our waterjetting is done on an Omax (to save you time when we eventually post pics )
Seems to be an Omax Intern.

These parts look super sweet, cannot wait to see them all powdered/ano'd.



02-02-2013 14:57

Cory


Unread Re: pic: 1538 Waterjet Samples

Quote:
Originally Posted by sanddrag View Post
What is your material and thickness, cutter type, spindle speed feedrate, and stepover?

We are running 1/8" thick 6061-T6 plate with a 1/4" 3-flute ZrN coated variable helix endmill, 16,0000 RPM, 30 IPM, 35% stepover, dry cutting, and it's cutting nicely. We tried pushing it faster and did not have favorable results. Also, our router is only a 2.5 HP machine. Also, we're turning all the pockets to chips. No solid pieces left behind.
There's your problem. I would contour, not pocket.



02-02-2013 15:29

R.C.


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Quote:
Originally Posted by Cory View Post
There's your problem. I would contour, not pocket.
Ditto,

What Cory said, we don't pocket. Its a waste of a time, we also use a mister.

-RC



02-02-2013 15:46

Bob Steele


Unread Re: pic: 1538 Waterjet Samples

Quote:
Originally Posted by Akash Rastogi View Post
Seems to be an Omax Intern.

These parts look super sweet, cannot wait to see them all powdered/ano'd.
Omax is one of our sponsors.. We like to see other teams using the product.
In our new school, which will open next year...we will have our own OMAX waterjet..

Navid was an intern for OMAX but now works for them.

good luck



02-02-2013 17:21

sanddrag


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We're pocketing because we didn't want the loose pieces getting grabbed and flung.



02-02-2013 18:19

R.C.


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Quote:
Originally Posted by sanddrag View Post
We're pocketing because we didn't want the loose pieces getting grabbed and flung.
Right,

We've dealt with that by using double sided tape (especiallly if your running dry, we run wet so its hard) and by just making sure we have enough clearance between the holder and the material so when the piece does get flung it doesn't get caught.

For us the tradeoff of 5 hours vs 35 minutes is pretty huge. So we just have a kid sit there and make sure everything is g2g.

A vacuum table should hold it down well, but most routers don't have one.

-RC



02-02-2013 20:16

Navid Shafa


Unread Re: pic: 1538 Waterjet Samples

Omax is interested in helping machine shops or schools which use their machines to make robot parts. They are looking into supplying teams and their sponsors with abrasive, maintenance help, etc. Please PM me with the information if you are interested.



02-02-2013 20:54

jwallace15


Unread Re: pic: 1538 Waterjet Samples

Can any of you imagine what a nightmare that would be to do on a mill? I thought milling lightening holes into our chassis pieces was nightmarish...



02-02-2013 22:24

Mk.32


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Quote:
Originally Posted by jwallace15 View Post
Can any of you imagine what a nightmare that would be to do on a mill? I thought milling lightening holes into our chassis pieces was nightmarish...
And this is why CNC was created
If I only have a manual mill I usually use a 3/4inch drill bit to do my lighting.



03-02-2013 02:05

AdamHeard


Unread Re: pic: 1538 Waterjet Samples

Quote:
Originally Posted by sanddrag View Post
We're pocketing because we didn't want the loose pieces getting grabbed and flung.
Tabs.

Tab the parts in, we do it for everything.



03-02-2013 06:27

sanddrag


Unread Re: pic: 1538 Waterjet Samples

Hmm, tabs, not a bad idea. Or leaving a couple thou at the bottom and cut it out with a knife after, and deburr. We're new to this CNC routeri business. and still experimenting. For tabs, I don't think our CAM software has auto-tabs. We'd have to draw them in which would take a while. Either method requires some manual cleanup after.



03-02-2013 11:38

jwallace15


Unread Re: pic: 1538 Waterjet Samples

Quote:
Originally Posted by Mk.32 View Post
And this is why CNC was created
If I only have a manual mill I usually use a 3/4inch drill bit to do my lighting.
I used a 3/8 inch 2-flute end mill. I started our with a 4-flute and learned that 4-flutes and aluminum don't mix it melted my piece. And the absence of WD-40 caused the aluminum to stick inside of the bit .
Also, it was manual.



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