[PSUBS-MAILIST] Manipulator arm

Alec Smyth via Personal_Submersibles personal_submersibles at psubs.org
Mon Jun 2 22:06:28 EDT 2014


Oh wow, I think, even though electric we can go a little more heavy duty
than that. It looks like it was built of recycled parts from old IKEA desk
lamps!


On Mon, Jun 2, 2014 at 9:29 PM, Pete Niedermayr via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

>
> Mmmm sea cucumber sandwiches--------------------------------------------
> On Mon, 6/2/14, Alan James via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>  Subject: Re: [PSUBS-MAILIST] Manipulator arm
>  To: "Personal Submersibles General Discussion" <
> personal_submersibles at psubs.org>
>  Date: Monday, June 2, 2014, 4:16 PM
>
>  Alec,here is just what you
>  want.An lightweight underwater
>  electric manipulator from China, complete with
>  cameras& shopping basket for
>  samples.I have seen other versions of
>  this.
>  Weihai Future Robot Co., Ltd.
>  AlanWeihai
>  Future Robot Co., Ltd.Weihai
>  Future Robot Co., Ltd.View
>  on vvlai.cnPreview
>  by Yahoo
>
>          From: Private via
>  Personal_Submersibles
>  <personal_submersibles at psubs.org>
>   To: Personal
>  Submersibles General Discussion
>  <personal_submersibles at psubs.org>
>   Sent: Tuesday, June 3,
>  2014 9:24 AM
>
>  Subject: Re:
>  [PSUBS-MAILIST] Manipulator arm
>
>  ...and if it
>  were me, electric rather than hydraulic. The reason is, itsy
>  bitsy PSUBS might not have space for the pump, reservoir,
>  valves, and whatever else hydraulics require, but we do all
>  have batteries. I mean, in Snoopy small size drives my
>  choices even of instruments. I can't see needing great
>  lifting power, I'm happy to pick up a sea shell or
>   clip a surfactant line onto something. The ideal setup for
>  me would be a bolt-on manip requiring no gear at all in the
>  sub except for one electrical penetrator to connect the
>  thing to, and joystick(s) to control it with.
>  Best,
>  Alec
>
>
>
>  On Jun 2, 2014,
>  at 10:18 AM, via Personal_Submersibles <personal_submersibles at psubs.org>
> wrote:
>
>
>  Scott,
>
>
>
>
>  Looking at Schilling, etc., is instructive, but rather like
>  watching those shows on cable television where young couples
>  are trying to decide whether to buy a five hundred and
>  eighty-five thousand dollar house or a six hundred and
>  twenty-nine thousand dollar house, neither of which they can
>  afford.
>
>
>
>
>  What we really need
>  (in my opinion) is something simpler. Think mobile gripper
>  to start with. I know of a lightweight three-function
>  pneumatic arm (shoulder left-right/up-down and gripper) that
>  worked fine. It was designed to be easy on the pocketbook
>  and simple to use/maintain. Valves, tubing, three pistons,
>  some smallish diameter aluminum pipe, and a few brackets to
>  build. Not a bad place to start.
>
>
>
>
>  Vance
>
>
>
>
>
>
>  -----Original
>  Message-----
>
>  From: swaters via Personal_Submersibles <personal_submersibles at psubs.org>
>
>  To: Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
>
>  Sent: Mon, Jun 2, 2014 9:26 am
>
>  Subject: Re: [PSUBS-MAILIST] Manipulator arm
>
>
>
>
>
>
>
>
>
>
>  Thanks Alan!
>
>  -Scott Waters
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>  Sent from my U.S.
>  Cellular© Smartphone
>
>
>
>  Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
>  Scott,
>
>  here is a link to the
>  Schilling manipulator manuals.
>
>  www.fmctechnologies.com/en/SchillingRobotics/Technical-Manuals.aspx
>
>  Very scary. They are the
>  rolls royce of manipulator.
>
>  Usually near the end of
>  these 500 page pdfs there
>
>  are various gripper
>  drawings with measurements
>
>  that would be a good
>  basis for gripper design.
>
>  Alan
>
>
>
>  Sent from my iPad
>
>
>
>  On 2/06/2014, at 11:37 am, swaters via Personal_Submersibles
>  <personal_submersibles at psubs.org> wrote:
>
>
>
>
>
>
>  Thanks for the info
>  Vance. I am starting to get a idea of some direction for a
>  psubs manipulator.
>
>  Thanks,
>
>  Scott Waters
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>  Sent from my U.S.
>  Cellular© Smartphone
>
>
>
>  Vance Bradley via Personal_Submersibles <personal_submersibles at psubs.org>
> wrote:
>
>  Hytorc makes a good line of robust, self-contained
>  continuous duty pumps, most adjustable from 1500 to 10000
>  psi. The.120 volt units we used had a universal motor so
>  could be run on straight off the main buss. We set them up
>  with an accumulator pre- charged to 1000 psi and a pressure
>  switch set 1000 to 1500 psi. This supplied pressure to a
>  double bank (6 each) of Parker-Hannifen solenoids controlled
>  with their own 12 volt tap. Twelve solenoids gave us control
>  for two manipulators, plus rudder and dive planes (with some
>  variance depending on the sub). All of this was mounted
>  internally. Eventually, perry went to external compensated
>  pump/solenoid boxes for the manipulators, but by then the
>  subs were up in the one point five to three million dollar
>  range. The resultant increased budget and their growing
>  experience with work class ROVs made that practical. All the
>  later boats were set up with the external package, as far as
>  I know.
>
>  Vance
>
>  Sent from my iPhone
>
>
>
>  > On May 29, 2014, at 4:36 PM, Hugh Fulton via
>  Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>  >
>
>  > Hank,
>
>  > That seems like very good advice.  I am wanting to do
>  a manipulator but need
>
>  > to get some idea of what lifting or forces are
>  required.
>
>  > What are the pumps you have found to work best.  What
>  pressure do they
>
>  > develop? I had no idea what a top pump was so googled
>  it and came up with
>
>  > breast pumps!! I didn't want to make a tit of
>  myself so chased down some
>
>  > more and found that they are for convertible cars. They
>  look a bit on the
>
>  > large side diameter wise.  Any brand best?  Cheers,
>  Hugh
>
>  >
>
>  >
>
>  > -----Original Message-----
>
>  > From: Personal_Submersibles [mailto:
> personal_submersibles-bounces at psubs.org]
>
>  > On Behalf Of hank pronk via Personal_Submersibles
>
>  > Sent: Friday, 30 May 2014 12:21 a.m.
>
>  > To: Personal Submersibles General Discussion
>
>  > Subject: Re: [PSUBS-MAILIST] Manipulator arm
>
>  >
>
>  > Scott,
>
>  > No matter how you do it, a manipulator will cost some
>  of money.  I have made
>
>  > many and the tendency seems to be, to try and make them
>  strong to lift a
>
>  > lot.  Well first off, I think it was Vance that said
>  it best.  A manipulator
>
>  > is for manipulating not lifting.  With that in mind,
>  large components are
>
>  > not needed.  Simple air cylinders from ebay are  all
>  that is needed.  A 2in
>
>  > bore and depending on manip design, 4in stroke, maybe
>  as much as 6in stroke
>
>  > is all you need.  Keep the rod size small at 5/8, that
>  reduces the back
>
>  > pressure.  I have said it before, I love convertible
>  top pumps.  Consider
>
>  > using one pump per function again purchase from ebay
>  for 125 bucks.  No need
>
>  > for valves, the pump simply runs in reverse to change
>  direction of the
>
>  > piston. Keep the pumps inside the sub and it is real
>  simple.  As for the arm
>
>  > itself, if have made them from cardboard first.  You
>  can mock it up that way
>
>  > and find the best pin locations for the cylinders and
>  ensure the  cylinders
>
>  > stroke properly without over centering. You can build
>  the arm with square
>
>  > tubing, use 3 inch aluminum so the cylinders fit inside
>  when the arm is
>
>  > folded up.  Forget about a wrist until you have lots
>  of time to play around.
>
>  > Four functions will serve a psubber well and can be
>  built for under 1,000
>
>  > dollars. I can send you a convertible top pump to play
>  with if you like.
>
>  > Hank
>
>  > --------------------------------------------
>
>  > On Wed, 5/28/14, swaters via Personal_Submersibles
>
>  > <personal_submersibles at psubs.org> wrote:
>
>  >
>
>  > Subject: [PSUBS-MAILIST] Manipulator arm
>
>  > To: personal_submersibles at psubs.org
>
>  > Received: Wednesday, May 28, 2014, 9:31 PM
>
>  >
>
>  > Hey guys. I am
>
>  > still working on the manipulator arm project for the
>  K  boats. I am a
>
>  > little overwhelmed as to what direction to  head. I
>  really don't know where
>
>  > to start because of my  lack of knolwedge. Does anyone
>  have any pointers as
>
>  > to where  to start? I am thinking about using electric
>  motors rather  than
>
>  > hydrolics just because of the amount of external
>  operating
>
>  > peices. Thanks,Scott  Waters
>
>  >
>
>  >
>
>  >
>
>  > Sent
>
>  > from my U.S. Cellular© Smartphone
>
>  >
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