Worm drive 30:1, module 2
Single-start worm and a 30-tooth wheel. Self-locking, 6 mm shaft.
Drag to rotateDescription
A single-start worm on a 30-tooth wheel gives exactly 30:1 in one stage, which is the whole reason to use a worm drive. It is also self-locking: the load cannot back-drive it, handy for lifts and rotary tables.
Print the worm standing up, seven starts of thread, 0.16 mm layers. Lying down will not work - the helical surface turns into a staircase and the drive binds. The wheel goes flat like any spur gear.
Efficiency is low, 40-50%, and it runs warm. For sustained load it needs grease; any silicone grease will do, but keep lithium grease away from PETG.
Comments (2)
Поставил на поворотный стол для фото. 30:1 от шагового — ровно то, что нужно.
Поправил профиль витка, старый на некоторых слайсерах выходил с наплывом.