CNC Mill/Router?

[Steven Smith]

I hear good things about Velox, so not trying to dissuade.

3005 has a CNC Router Parts Pro series 4'x8'. In retrospect, i would have done a 4'x4' unless you have an excess of shop space (we don't).

The machine has had a few hiccups and learning curve moments, some due likely to being assembled quickly, being on a base that isn't perfect, etc. Some are due to Mach 3 and a few little oddities in the control software. Some are true design issues.

All that being said, roughly a season and a half after we got it, I'm pretty pleased with the results. We've upgraded it to an eBay 2kW spindle and added a vacuum for chip clearing, air blast for chip clearing and some cooling, and either manually follow with coolant or dry cut depending on the material.

With proper CAM to do roughing and finishing passes, I can do acceptable press fit bearing holes in aluminum. On 6061T6, we cut at ~40IPM on a 3/16" single flute bit at ~0.05" per pass. We can hold a 3/16" drill bit into the router (jobber length) to get acceptable rivet patterns (might get carbide soon). 5052 aluminum (for bent parts) is a bit more troublesome and we have to stay on the coolant, but it works. Polycarb/acrylic/wood/etc all cut just fine with lots of margin of error.

One big lesson learned for us (and any router) is how important work holding is. The preferred method to cut aluminum is with an upcut bit to clear chips, but it also lifts the material. If you don't have adequate work holding the material will bend upwards and vibrate and rub against the bit. We have a sacrificial MDF table, and we layout our parts with screw holes every 5-6" inches around the edges of the part, then screw it down tightly. A vacuum table would be a better solution, but we don't have the time/money to retrofit.

Talk to them about the "DIY" electronics kit that has the same components as the pre-built ones. If you can do your own enclosure and wiring, you say ~$500-750.

[niklas674]

Team 701 uses the CNC masters Supra. It works very well and gets the job done. I have had zero issues with it. It comes with a mastercam package but I prefer to make the CAM files in inventor then export to mastercam.

Here is the link for the machine: http://www.cncmasters.com/product/cnc-supra-mill/

Good luck with any parts that your team CNCs out in the future.

[Fusion_Clint]

Originally Posted by Steven Smith

I hear good things about Velox,

Team Fusion 364, was able to buy a VR50X50 with a 2.5 HP Spindle last year and we absolutely love it! We machined all of our custom parts for this years robot with it.

Also, they great customer service, I highly recommend. We got our entire machine with a starter bit set for approximately $13K, we made our own table though.

You can see our drivetrain here.

https://i.imgur.com/jNYSDgfh.jpg

[BenGuy]

We got a Tormach 1100 CNC mill this year, it works great and we only had to pay $9,000. A company named EDSFUND allows applications for a $6,000 grant where they pay $6,000 and you pay $9,000 to get the Tormach 1100 CNC mill which is $15,000. We completed this grant this year and it is awesome. Check out their website and our grant proposal below.

http://www.edsfund.org/

http://www.theflyingtoasters.org/#!c...overveiw/c23q3


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