my idea is to run a 5/2 solenode like this http://www.ebay.com/itm/1-2-DC-12V-5-way-2-position-Pneumatic-Electric-Solenoid-Valve-NPT-Air-Aluminum-/281360345142?hash=item4182622836:g:Mp4AAOSwhh5Tmlqn then wire it to a  flasher unit like this http://www.ebay.com/itm/2-Prong-Electronic-LED-Compatible-EF32SS-Solid-State-Turn-Signal-Flasher-25-Amp-/400665610452?hash=item5d498808d4:g:SuUAAOSw~gRV6Kss&vxp=mtr with a ball valve on the exhasut port  linked to a foot peddle will it work is what i am wondering i know i cand do the electric all easy but not sure if  an electric controlled 5 way will fill and empty fast enough to hammer with 

ok s 52 views and no answers   then let me pose another question  the spring on a kinyon style  has any one used sway bar s from a rease set up  was thinking  put the narrow end over the  hammer side  so that as it piviots that side will get mor whip  out of it  but with a shorter  depth over all 

a world wide forum and you have decided 11 hours is too long to wait ?  hmmmmm.

You need a 2 pilot shuttle either air or electric and a limit switch at the apex and another at the lower stop. However there are still problems to overcome like supplying power, mechanical cycle limits etc. You could use the existing single dc pilot shuttle you pointed out and using a contactor and auxiliary keep the pilot active until it hits the stop and turns off to reverse the shuttle. As for your sway bar question.. Probably not as they're typically rigid as the application is to stop sway. Why reinvent the wheel if you don't have to?

J

i drew up a quick scetch of my idea with the weight distributing  bars in the middle of the second pic only reson ask about them is i have 5 sets sitting in my shed right now  i am looking at about 60 pounds for the top die and verticle bar  my under standing on the 5/2 solinode is that when paower is supplied  one port is  charged with air and the other is oped to exhaust when power is taken away they swap places so by alternating with a flasher  it will open and close  with out the extra switches and links  rune ehaust thru a ball valve  linked to foot peddle 

And you're going to have no control of the tup cycle. There's a reason limit switches are used versus timed circuits. This isn't a static machine with cyclic rotation, it's dynamic as is the nature of the work piece under it and therefore needs to be controllable. 

J

ok i get ya so a air controllered 5/2 then a 3 way tied to on offs at top and bottom of ram throw but i am con fused as to what controls the bpm on an air system only .control do you ball valve the exhaust at the 3 way  or at the 5 way valve   i have looked thruh 6 pages of threads used the search funtion , google and youtube no budy does a complete walk thru of  like air  in here to this valve this vallve connect   this port to this port on this valve  back to these swithces  . there is a pnumatic  can crusher  that is automatic that  that looks like it could be scaled up  and ad control on the exhaust side on you tube but even he doesn't explain the skematic  and most of the parts numbers people are listing as what they used when i search them  come up with bubkis worst part is they say i used this valve a xxx890239029 what ever instead of i used a 5/3 piloted   sorry for the rant i have been tring to design this  thing  for a while now and am down to the controls  i dont like spending money in the blind  i have managed to source every thing but the  cyclinder and  controls . i am slowly going insane on this one.

ps thanks for the help JWS

 

Only two ports on the limit switch are needed. Mainline air supply (P) branched from the same that supplies your shuttle and the exhaust port (A) which will go into your pilot port. Exhaust is all handled on the shuttle and by using a ball valve the flow rate can be changed which controls the speed of the cylinder. On the design you drew a single pilot/limit switch would work. It would go on the up stroke to switch the shuttle and allow it to drop the tup.

J

 

Here's an example of the switches I use.

thank you i was able to actual search for that one  you wouldnt happen to haqve a pic of the rest of you  controls 

 

I can't comment on the electrics, but I think there's a basic mechanical problem in your sketch. Your spring, or swaybar is drawn horizontally, and as the hammer raises, the distance from the center pivot point to the slide changes, and I don't see a way to compensate in the drawing. I think a shackle on the front would not transfer power very well.

I am building a hammer and had similar thoughts (because somebody basically gave me a spring return solenoid 5-way 2 position valve).  The only way I could think to run it was to put an electrical switch half-way across the travel and have it act like a normal Kinyon, or put one switch on either end of the tup travel and use what's called a 'latching relay' which holds the relay in position one until the other switch is triggered, then holds in position two... then back to one, and so on.

I'm still only getting close to finishing my hammer, so I'm no expert, but I figured it might have made sense.  I have since switched to a dual air pilot valve because I wasn't sure I wanted the hassle of plugging it in and troubleshooting two systems (and I think the solenoid valve was siezed - thanks buddy!).  

Here's what I learned (including my schematics):

http://straightrazorplace.com/forge/122144-air-hammer-4.html