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# how to convert rotary motion to lin

## how to convert rotary motion to lin

(OP)
how to convert rotary motion to linear motion

rotary motion 7 degree per pulse in stepper motor
to linear motion 1mm

### RE: how to convert rotary motion to lin

It will depend on what your stepper is driving. For example, if you have a 5mm pitch dia. pulley on the stepper, driving a sycronous belt, the required rotation of the stepper would be:

360*(1/(5Pi)) = approx. 22.91831°

I don't use steppers, but I'm assuming that each 'step' is 7°. If this is the case - you'd need approx. 22.91831°/7° = approx. 3.27404 steps.

### RE: how to convert rotary motion to lin

Could you use a rack & pinion setup?
If so then the pinion needs to have a pitch dia.
of 8.1900mm.

### RE: how to convert rotary motion to lin

Slider-Crank, belt, chain, rack&pinion, cam, epicyclic gears (on some steam engines), acme screw, or ball screw.

### RE: how to convert rotary motion to lin

Any crank, cam, or ellipse will not yeild a consistent
linear movement per. degree of rotation. A screw for
this application would need a pitch of 51.42857142875...
mm., an infinitive number.

### RE: how to convert rotary motion to lin

Cam created from the Archimedes spiral will do it too.
gearguru

### RE: how to convert rotary motion to lin

abiarj:

apologize me : "ARE YOU SURE YUR STEP IS 7 DEGREE"
If I'm  wrong, apologize me again.

Pardal

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