Guys I am kinda at a loss here when it comes to controls for a lathe.If you look over in the SB section I have posted my project which has a project within its self and why I'm here.The lathe is a SB Fourteen lathe 1970 model that use to have at one time the electronic speed control but no longer.In that same control box is a on/off switch and a drum switch Forward/Off /Reverse,and at the bottom of the lathe cabinet is a hand wheel that is connected to the reeves pulley that you turn to change speeds.Guys this is all there is,how did the previous owner tell what the rpms were and there is no starter on this machine which also has a 3hp 3phase motor.One of the good things is this lathe came with a Rotary Phase Converter that I guess at one time power this machine but I don't know that for sure.
Anyway what I would like to do if someone can figure this out is use the old control cabinet that sets on top of the headstock and use the original drum switch,install a start/stop button in the cabinet that will pull in the contactor of the starter and send power to the drum switch if all this is possible.But what can I do to get an ideal at what rpm is the spindle turning as I adjust the hand wheel for the reeves pulley.I don't think it has to an exact reading but a good reference each time like for turning steel,aluminum or stainless steel which I plan on using carbide inserts.Surely I'm not the first person that come across a problem like this,so hoping someone has an answer.If you have any ideals please let me know or maybe post pics of your homemade setup----Thanks
Guys I don't have to use this control box/cabinet if you have another ideal,I'm all ears
Anyway what I would like to do if someone can figure this out is use the old control cabinet that sets on top of the headstock and use the original drum switch,install a start/stop button in the cabinet that will pull in the contactor of the starter and send power to the drum switch if all this is possible.But what can I do to get an ideal at what rpm is the spindle turning as I adjust the hand wheel for the reeves pulley.I don't think it has to an exact reading but a good reference each time like for turning steel,aluminum or stainless steel which I plan on using carbide inserts.Surely I'm not the first person that come across a problem like this,so hoping someone has an answer.If you have any ideals please let me know or maybe post pics of your homemade setup----Thanks
Guys I don't have to use this control box/cabinet if you have another ideal,I'm all ears