Sovella workbench-Concept 2

Differential screw shaft mechanism,and Chain mechanism. In chain mechanism bigger Sporcket has 30 tooth and small sporcket has 15 tooth.Screw shaft is differetial ( Tr 24x3 left hand one start and of the opposite side Tr 26x8 rihht hand with two starts. With half refolution on the wheel ,Screw shaft will do one revolution. Nut Tr 26x8 righ hand - two starts will be move Up for 16 mm, and differential Screw shaft( left hand one start) also starts move Up for 3 mm.Also screw shaft in the wheel rotates and move Up together with chain and Differential screw shaft. Moving Up on table for 350 mm, Screw shaft has to rotates 22 times,and move Up 66mm(22Rotations x 3 mm(Pitch). 22 rotations x 16 mm( 8mm x2 starts)=352mm