Problem with threading on my 7x14 realbull lathe. Please help
Can someone help me with this please. I need to be able to thread stuff and having a big problem . I know how to change gears to get the TPI i need but its not working. If i put on gears to thread lower coarse tpis i can get it to work somewhat but when i start getting higher in TPI the leadscrew gets so tight that it wont turn. I tried putting gears on to thread 20 tpi and i can even turn the chuck by hand and as soon as i try to turn it on the foward/reverse leadscrew lever just pops right out of gear. Im sure this is because the leadscrew is so tight its not turning. Has anyone experienced this before?
There is 2 nuts to adjust the gears so the teeth line up and iv tried adjusting them so they are making good contact and so the teeth are just touching and nothing i do makes it any looser or able to turn at all. I even tried holding the lever so it cant pop out of gear but even then it wont turn even when raising the speed control . in regular turning gear setup everything works fine ,i just cant get the threading to work at all and thats what i need the lathe for most .In the tpi im trying to cut its using 3 gears the middle gear im using is a 65tooth which is the blank one on the chart. Im so frustrated im about to give up and get a 9x20lathe with a quick change gearbox.
Anything you got on this please let me know. i need to thread some parts asap for a job. Thanks
Grizzly G0602-AXA QCTP<<< Soon to be CNC and 3PHA-VFD !
7x14Lathe, X2cncmillG540 Solidworks,HSMworks,VcarvePro