DVR Drill Press beta test! - Printable Version +- Woodnet Forums (https://forums.woodnet.net) +-- Thread: DVR Drill Press beta test! (/showthread.php?tid=7151009) Pages:
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Re: DVR Drill Press beta test! - EvilTwin - 11-24-2015 handi said: Sounds very much like what a vfd will do when it has the sensorless vector/constant torque technology incorporated. From what I understand, most of these new lathes coming out are all essentially 3 phase motors with built in VFD's to handle the speed and load duties. All the features you quote are incorporated into most higher end VFDs sold lately, including the DC braking function and the slow ramp up/down on the speed. I don't know how revolutionary this technology is, certainly it hasn't been incorporated into a press before. I'm still curious about how big the motor is and what the current draw is. Re: DVR Drill Press beta test! - Darkheart - 11-24-2015 Direct drive you say? Can I throw an XY table under it and mill metal? Re: DVR Drill Press beta test! - fredhargis - 11-24-2015 It's been so long since I first read about these, I though maybe they died in conception....good to see things are moving forward. Re: DVR Drill Press beta test! - Routerman - 11-24-2015 Used everyday, ~150$ controller years ago. The only way to drill and tap. Acceleration/deceleration under your control. & that means braking too. This one is set for 3" up or down. And, of course, RPM. 3 phase x 3/4 hp with a Tico VFD. Can handle 1" holes in steel. Re: DVR Drill Press beta test! - nicobie - 11-24-2015 I wonder what the quill travel is and does it use a #2 taper like the new powermatic? Re: DVR Drill Press beta test! - BloomingtonMike - 11-24-2015 Are you using a floating tap then Pat? That setup is not encoded to do power tapping it does not look like is it? Re: DVR Drill Press beta test! - Tony Z - 11-24-2015 Can also do what I did for a few Amish chums about a decade ago: They wanted a drill press. Did not want electricity. Did not want to turn the crank of a post drill. I stripped the electric motor off of the DP and rigged up an air motor, with equal pulleys on drill and motor. Worked like a charm, with varying the speed controlled by restricting a ball valve on incoming air (yes, by the way, they did allow an air compressor outside of their workplace and in this case, it was a huge diesel powered compressor). Re: DVR Drill Press beta test! - Routerman - 11-24-2015 The torque is there to tap steel. Using a treddle (on/off) for my third hand. So the tap stops (unloaded) in 3 seconds. In the work, release of the treddle stops tap instantly from the load, never breaks ether. No tapmatics , no heroics, just let go of the foot switch. Done for >35 years without a busted tap nor an overdrive. Re: DVR Drill Press beta test! - BloomingtonMike - 11-24-2015 Your treddle is switching contacts on the VFD then? What are you using to reverse the VFD drive direction? Any video of it in action to show us? Sorry for the OT! Re: DVR Drill Press beta test! - Routerman - 11-24-2015 Note the exposed pulleys. Tap retraction x grabbing the belt in reverse. 1/4-20 in a 1/2" of aluminum takes ~2 pulls on the belt. Would I recommend for the Klutz? Absolutely not. |