Greetings all; This particular carving project uses 3 different tools which must be changed 4 times per end of a board processed.
This has got me to thinking of a tool changer device since I am spending about 1/2 of my time changing tools & other preparatory stuffs. At present, this thing has an R8 spindle, but I haven't tested to see if the spindle motor has the muscle to run the draw bolt if the wrench is held. I'd assume so if the gear selection was in low. However, putting it in low isn't easily done by hand. That big knob on the side is big for a reason, which is to give us a good grip to shift it with. It is, IMO, needlessly difficult to switch gears. I'd assume it is easily replaced by a longer lever, which could then be swung by a smaller motor to effect the gear change. This is the OEM spindle motor, rated at 1 HP when driven by the OEM SCR/Triac controller, but with Jon's PWM servo driver with about 110 volts of DC power, can be run 500 revs faster than the OEM controller I took off could run it, and is full power reversible, running a G33.1 rigid tapping cycle very nicely. I write it to "peck" the bigger taps above #10 or 5mm of course. So there is, for short duration efforts such as dropping the tool, or pulling the next one back in, likely more than enough torque to do that. Less torque needed there than in running the nut on the tormach ER-20 adaptor with a big Crescent wrench which is what I am presently using while the spindle is pin locked by the brake I made. Those are very nice, but run the cost per tool up about $50/tool so I only have one adaptor and 3 collets (sp?). Does anyone have any experience with this? Or am I just a beggar, wishing for a free horse, and designing my own saddle? Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
