My first cnc build used 80 oz. in. steppers and 1/4" MXL timing belts. I upgraded the steppers to 400 oz. in. but kept the MXL belts. The first time I crashed the spindle head, it stripped the...
Type: Posts; User: Goosey
My first cnc build used 80 oz. in. steppers and 1/4" MXL timing belts. I upgraded the steppers to 400 oz. in. but kept the MXL belts. The first time I crashed the spindle head, it stripped the...
I'm building a solar powered shop with battery storage. While some of my motors will require 120/240 volts from an inverter, the stepping motors can be powered directly from the batteries.
Does...
I'm in the design process for a solar powered machine shop and initially i only plan to operate one mill/lathe at a time and I've calculated that a 5k pv system can operate a 1.5 hp setup (on a...
A friend of mine who races recently bought a lathe/mill which actually uses the lathe chuck to mill. It has a vertical cross slide that mounts to the lathe cross slide. I'm not sure if his is a...
In NCPlot, you can assign gcode (and other) setup values based on layer names so future drawings will automatically bring in these values without re-editing them. Of course, you have to shut the...
My bad...
I forgot that when I upgraded my stepper controllers, I went from quadrature to step/direction signals.
I used a couple of hex inverters to buffer the signals from the computer to the...
I have a 1.5kw spindle, at least 16k rpm, possibly 24k. On the shaft above the collet is what I assume is a flywheel. I'm considering adding a squirrel-cage like fan or rotor to the shaft to pull a...
My cnc has a 450 oz.in. stepper on either end of the gantry that drives the x axis. That means when the power is off, I can twist the x axis out of square easily. I drive both steppers with the...
That explaination makes the most sense, yes, mactec.
When I researched that spindle-matching inverter combo before I bought it, I came to understand it was designed to run off 360v 3phase (as in...
Thought I'd update this thread in case others encounter similar problems.
I've discovered that by pre-spinning the spindle before turning it on, it spins up and runs fine. I can even make it run in...
mactec54
" What was happening with your motor is called Single Phasing"
Is that an event associated with the VFD or from damage to the motor? Or something else?
Also, since I'd thought...
Started troubleshooting so stuck my head between the VFD and spindle to make sure which one was making spinup sound. Believe it or not, it went ahead and ran so I scooted the HZ back up into the...
I've had my machine up and running for a year, just never operated it at that low rpm. I think I'll err on the high side from now on. It would have helped if I didn't have to convert from hz to rpm...
I did two sets of 17 holes without any problem. My readout is 0-400 hz and thinking my spindle runs at 16000 max, I set it to ~1100 or 25hz...raised it to 30 hz to get rid of friction squeak. Any...
I'd like to know how it can "sound" like it's spinning up yet the shaft isn't turning.
I just finished peck drilling 17 holes with a #40 drill and swapped to .125 end mill to do some slots. The peck drilling was the slowest rpm I've ever used my spindle at for an extended time but...
I actually used 3 graphite plates, ~.150" thick each. Bottom plate with letter pockets sits directly over flame. Second plate has v cut-thru slots that I put cut lengths of .070 aluminum wire into...
I made a graphite mold with 1/32" em slots but getting the metal into the pockets has turned out problematic. I'm considering milling a cover plate with journals to transmit the aluminum to one end...
" Quote Originally Posted by Goosey View Post
I've done that with F-Engrave but it doesn't correctly collision detect. "
I should have said... I've done that with F-Engrave but it doesn't...
On further thought, that might actually work Jim. I remember trying it and running into a problem but can't remember what it was right now. Might have been when I oversized an em.
When I want to...
I've done that with F-Engrave but it doesn't correctly collision detect. With your example, if I had a .245 slot in the part, the program would march down the slot thinking it's perfect while it's...
Many years ago, (maybe Win95 and before) I wrote programs to do many things using qbasic or gwbasic...i forget.
I recently found an open source clone that utilizes 64 bit architecture (qb64) and am...
I bought a matched pair spindle and FVD from ebay 2 years ago. Now that I'm ready to install it, I can't find a model number on the VFD but the only unit in the Chinglish manual that matches it's...
Hi all,
I just got my Machinist One degree as well as CAD Technician at a local college. Still have a couple of years of student AutoCad to play with :)
Got started about 3 years ago when I...
My machine shop instructor allowed me to bring my cnc router to school to rebuild the z axis. After wearing out a dremel, I knew I needed something significantly more accurate and powerful so I...
I've re-upped that tool holder shaft for months and as it turns out, someone had hacked that site and i paid a thief...however, ebay returned my money...(or was it paypal?). anyway, a bit more...
I don't have money in the budget yet for either option yet so I did order this, New Straight Milling Shank C10 120L ER8 Collet Chuck | eBay, to see how it fares. My instructor believes we can grind...
That looks like it will do the trick just fine. I've found another similar spindle/z axis that's a bit less expensive but I believe yours wins on the runout contest. The other one is at Instant Z...
My dremel is flat worn out, so time for an upgrade. I run 1/8 shank end mills but the flutes get as small as 3/64 inch. I do minor aluminum but mostly wood engraving.
I've seen some "default...
When I run Truetype Tracer created g code it tells me "Program exceeds machine minimum on axis y" and offers to let me run it anyway.
If I run it anyway, I get "Linear move on line 17 would exceed...