Had to do some parts today using my second least favorite lathe operation.
Knurling.
3 1/8 Dia. steel tubes, the knurl is 22 5/8" long and 12 TPI. X .015" depth.
Did use a clamp knurling tool. Eaglerock.
Did not skim the OD to achieve some multiple of 12 TPI circumference as many youtube videos recommend.
Did use about as much coolant as I could throw at it, one nozzle per wheel, this is important.
80 Rpm's, .008" feed per revolution.
I used their (Eaglerock) recommended methods for a manual lathe.
Set tool X axis, center of the wheels at the center of the spindle.
Run the tool to center with the spindle stopped, turn the adjustment until the wheels touch the part then crank in the wheels to full depth.
Engage feed then start spindle.
This is not a full depth knurl, the top has a flat per the drawing/sample.
They get hard chromed afterwards.
Worked a charm for the most part, had to do a bit of fussy adjusting on the first part but the following ones ran rather well. 3 more to run tomorrow.
Knurling.
3 1/8 Dia. steel tubes, the knurl is 22 5/8" long and 12 TPI. X .015" depth.
Did use a clamp knurling tool. Eaglerock.
Did not skim the OD to achieve some multiple of 12 TPI circumference as many youtube videos recommend.
Did use about as much coolant as I could throw at it, one nozzle per wheel, this is important.
80 Rpm's, .008" feed per revolution.
I used their (Eaglerock) recommended methods for a manual lathe.
Set tool X axis, center of the wheels at the center of the spindle.
Run the tool to center with the spindle stopped, turn the adjustment until the wheels touch the part then crank in the wheels to full depth.
Engage feed then start spindle.
This is not a full depth knurl, the top has a flat per the drawing/sample.
They get hard chromed afterwards.
Worked a charm for the most part, had to do a bit of fussy adjusting on the first part but the following ones ran rather well. 3 more to run tomorrow.