Mechanism 1: A carraige has to be moved on guide rails back & forth with a range of 70cm & a load of about 2 Kg. My 1st thought was a simple linear actuator, but at 70cm is there a better way like a simple screw drive or a belt drive ?
Mechanism 2: The carriage has an axle fixed to a rotating arm 75cm long that has to swing thru an arc of 145 degs loaded with about 2Kg the end. My 1st thought was to have a servo motor drivinfg a small gear to larger gear on the axle.
Both mechanisms need to be controlled to move in certain steps forward & back, but at this stage of the design development I’m more concerned with the mechanics than the control system.
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Hi Jim,
Would it be possible to narrow down the specs on your actuators a bit?
- What kind of forces are both looking to exert?
- Do you need position control? (or just getting to those steps?)
- Do you have any sketches of the system handy to gauge how everything ought to fit together?
Liam
This is my go at it.
The carriage is moved longitudinally on guide rails each side.
The arm is rotated on axle with a gear wheel driven by a small one.
Torgue about 150Kg.cm.
The motion is in a series of steps between certain points & back again so the end of the arm follows a specific path.
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Hi Jim,
Looks like a serious system!
150kg/cm is getting well outside of the hobby realm so might be good to get in touch with an industrial supplier of servo’s.
Liam
