Ball Screw (customisable)

thingiverse

I needed to create a round corkscrew shape, which inturn lead to creating this ball screw model, the linear_extrude function in open scad creates a squashed thread and would not work for my purpose. I've used the following setting in Ballscrew.scad to create the modles. Screw 1 Right hand thread settings used: F=50;// NUMBER OF FACETS H=45;//HEIGHT OF THREAD D=22.5;//DIAMETER OF BALL DI=24.75;//DISTANCE AWAY FROM CENTER A=360;//ANGLE OF TWIST USE NEGATIVE NUMBERS TO CREATE LEFTHAND THREAD N=4;//NUMBER OF THREADS SH = 80;//HEIGHT OF SCREW SHAFT SD= 30;//DIAMETER OF SCREW SHAFT CLEAN = true;//SHARP TRANSITION AT THE END OF THE THREAD WHEN THERE IS MORE SHAFT ABOVE Screw 2 left hand thread settings used: F=50;// NUMBER OF FACETS H=45;//HEIGHT OF THREAD D=22.5;//DIAMETER OF BALL DI=24.75;//DISTANCE AWAY FROM CENTER A=-360;//ANGLE OF TWIST USE NEGATIVE NUMBERS TO CREATE LEFTHAND THREAD N=4;//NUMBER OF THREADS SH = 80;//HEIGHT OF SCREW SHAFT SD= 40;//DIAMETER OF SCREW SHAFT CLEAN = false;//SHARP TRANSITION AT THE END OF THE THREAD WHEN THERE IS MORE SHAFT ABOVE