Firewood processor design almost done.

   / Firewood processor design almost done. #1  

polemidis

Gold Member
Joined
Oct 24, 2017
Messages
272
Location
Winthrop Maine
Tractor
LS XG3140
I am working on this project for a few months now, and I think its base structure is almost done. I am posting it here because I am wondering what major errors I may have before I start fabricating it.
Even though I have figured out the hydraulic saw part, I removed it for the design for now so I focus on that later on a different thread. What are your comments on the structure?
Some very obvious parts (like clamp cylinder's mount, pins, tongue etc) are missing because I am exhausted, I need to take a break :)
I have not done at all the conveyor part, because I got a used one on craiglist, no need to design.
The main beams are 3" x 1.5" x 1/8", most everything else is 1.5" , W-Beam is W8x35 or W8x40, the splitting cylinder will be a 5" bore.
The conveyor chains for the loading deck, and the sawing deck, will be 2060, strong but not expensive
As for now the weight of what visible is about 960lbs the center of mass is very close to the axle.
I have plenty of room for the engine(s), hydraulic tank, gas tank, etc
Tax refund money are about to come, so this and the Grapple will be fabricated soon :cool2:
I kind of bouncing in either making a smaller unit but still super efficient compared to the hand operation of firewood, or a bigger unit which wouldn't add lots to the cost. I think I balanced between these two, towards a smaller unit because of the size.

Feedback plz! :) :)

Screenshot from 2018-03-05 07-05-52.pngScreenshot from 2018-03-05 07-04-40.pngScreenshot from 2018-03-05 07-04-15.pngScreenshot from 2018-03-05 07-03-50.pngScreenshot from 2018-03-05 07-03-22.pngScreenshot from 2018-03-04 08-29-28.pngScreenshot from 2018-03-04 08-29-06.png
 
   / Firewood processor design almost done. #2  
I like it and envy you for being able to do this on the pc. At quick glance the first thing that pops out to me is the clamp, I think it should be back from the saw about 9-10". Just my .02. I have no experience running one just one of my observations for when I do. I think it will add stability for a 3' piece.
Do you mind if others use your design?
 
   / Firewood processor design almost done.
  • Thread Starter
#3  
I like it and envy you for being able to do this on the pc. At quick glance the first thing that pops out to me is the clamp, I think it should be back from the saw about 9-10". Just my .02. I have no experience running one just one of my observations for when I do. I think it will add stability for a 3' piece.
Do you mind if others use your design?

The clamp holds at 6.5" and at 8" behind the saw. (Sorry the saw is not up yet). So for a 16" piece its just off the center. Do you think I should move it more towards the back?
Thanks for your comment. The design will be open source :) If you need it now PM me you email I will sent it to you. Or just wait a few days, I am reconstructing my website, it will go there with all the details, Bill Of Materials etc.
 
   / Firewood processor design almost done. #4  
Lots of work here, nice plan. I agree with putting your clamp back some on the log or maybe adding a second one.
Does your splitter ram work in conjunction with the log conveyor? If so, is there a delay for the ram to split and then retract prior to the saw cut being made? Were you thinking of adding splitter bars so that more cuts can be made, especially on larger diameter saw logs? Is there a provision for the splitter to move up and down to accommodate larger or smaller diameter saw rounds?
 
   / Firewood processor design almost done. #5  
The clamp holds at 6.5" and at 8" behind the saw. (Sorry the saw is not up yet). So for a 16" piece its just off the center. Do you think I should move it more towards the back?
Thanks for your comment. The design will be open source :) If you need it now PM me you email I will sent it to you. Or just wait a few days, I am reconstructing my website, it will go there with all the details, Bill Of Materials etc.

Thank you and after your explanation I think it will be fine where the clamp is, it probably just looks close without the saw in place.
 
   / Firewood processor design almost done.
  • Thread Starter
#6  
Don't judge the cutting system is just a dummy right now!! I added it just for reference, and I added the chain links. I think it is ok. Maybe widen the clamp to hold at 6" and at 10" behind the saw.
Screenshot from 2018-03-05 19-18-05.pngScreenshot from 2018-03-05 19-17-09.png
Lots of work here, nice plan. I agree with putting your clamp back some on the log or maybe adding a second one.
Does your splitter ram work in conjunction with the log conveyor? If so, is there a delay for the ram to split and then retract prior to the saw cut being made? Were you thinking of adding splitter bars so that more cuts can be made, especially on larger diameter saw logs? Is there a provision for the splitter to move up and down to accommodate larger or smaller diameter saw rounds?
One valve controls the ram, one valve and a sequence valve control the clamp and the saw, and 2 more valves valve control the 2 conveyor systems (the feeding and the loader ones). No automation here other than the clamp/saw for safety reasons.
About the splitter I have a 4way, that coulbe be replaced with a 6way, but I do not know yet if I have enough juice for that. See the first attachment below the light blue, there will be a cylinder that will be able to move the 4way knife up or down. In the pic it is all way up.
Screenshot from 2018-03-05 19-32-33.pngScreenshot from 2018-03-05 19-32-17.png
The splitter needs a lot of work still. I want to change some dimensions on the plates (the purple ones), add the 4way adjustment system, and add the pivot points and the hinge for the conveyor.

Btw, the rough steel BOM is
50' of 3"x1.5" rect tubing,
46' of 1.5" sq tubing,
15' of 1.25" sq tubing and
23' of 1.5" x 1" angle iron. Not bad, 355lbs With $350 I may have all the steel, pins and plates included. Not bad at all!

Now me going cheap, I got a 16hp duromax engine for $180 online. I have to decide, to run everything with this motor or add a cheaper 12hp motor for the spliter only. Ideally I would equip this with a 30hp but that strong engine goes to $2500. For homesteading use, its crazy money that will never get get from that investment. Anyway, more of that stuff later.
 
   / Firewood processor design almost done. #7  
That is awesome!

If you need a beta tester, we are big wood burners..
 
   / Firewood processor design almost done. #9  
Looking to build something similar after i finish my sawmill. Im going to add a discharge shute because i dont split everything i cut.
 
   / Firewood processor design almost done.
  • Thread Starter
#10  
Looking to build something similar after i finish my sawmill. Im going to add a discharge shute because i dont split everything i cut.
Thats clever. Can you upload some pics/plans on how this can be done? I regularly have small stuff that I do not want to split but I didn;t figure a nice way to achieve it
 

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