How to Process Threads on Ordinary Lathe

1, first find an aluminum nameplate above the lathe feed box;

2. According to the pitch you want to process (for example, the pitch is 1.5mm), pull the handle on the feed box to the specified position according to the instructions on the nameplate;

3. Turn the handle of the polished rod/screw switch to the "polished rod" position, and pull up the joystick to see if the polished rod also rotates when the spindle rotates;

4. Align the tool, press the "opening and closing nut" on the toolbox, and test the thread.

5. For beginners turning threads, the spindle speed should be lower, about 50 revolutions, and the feed speed should be lower, about 0.3 ~ 0.5 mm/time.