|
Re: Swerve drive questions
That's an old version of our swerve module. I think 2011. Many things have changed. We now use timing belts on the first stage of reduction and # 25 chain and sprockets on the 2nd wheel reduction. The wheel cage is narrower and the transfer axle is shorter. The transfer axle Now is turned from .5 7075 AL The center Is left at .5 and constrains the sprocket and bevel gear. The thrust bearing washer for the bevel gear now sits on the outer flange of the flanged ball bearing and the sprocket is held in position with a nylon washer between the sprocket hub and the flange bearing. The transfer shaft can not move and we don't need set screws. both the bevel gear and sprocket have key ways broached in them and we cut a key slots in the transfer axle. The vertical drive shaft is keyed and we broach a key in the bevel gear. The bevel gear and axle are assembled with I believe 609 retaining compound. These changes came from experience with the past modules. Set SCREWS are best avoided. The 7075 transfer shaft has held up well. Normal ball bearings do not like axial loads and we use the ball thrust bearings to keep the axial load from the bevel gears off the ball bearings.
|