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hi guys
I solved the rotation problem
and found a pump to use for the hydraulics. parker has a piston pump that will
withstand 500 psi on the inlet and is available in 48 volt dc so i can use a
pressure comp resivor and flood the solinoids in it. And using parker te
series hyd motor for the rotation of the claw i shoud be able to get about 2 -
10 rpm using a pwm for the motor controller. i called alllen bradley about
using one thier remote i/o packages in the resivor, they had
some missgivings about it, but i figure if i epoxy encapsulate it it should
live . That will save a lot on hull pentrations because i will only have a power
feed/ 2wire and a data feed/2 wire. Still working on a budget price
of about 2000.00$ for the parts for both. will start building the mockup soon.
Want to start the hull mockup but have not yet
figured out how the make a hemisphere form plywood yet. The basic plan still
calls for no mechanical hull pentrations. I also found a great manufacture for
brass and stainless hyd rams. the base pivots and wrist pivot use off the shelf
food grade pillow block bearings, stainlesss and composite, wanting on the
manufacturer to get back to me with the mount strenghts.
rick m |