Designing a Monster Wood Splitter: Calculating Steel Strength & Thickness

  • Thread starter Thread starter BancheroTreeS
  • Start date Start date
  • Tags Tags
    Wood
Click For Summary
SUMMARY

The discussion centers on designing a heavy-duty wood splitter capable of processing 42" diameter logs using a stationary multi-wedge splitter and hydraulic cylinders rated between 100-150 tons. Key considerations include selecting the appropriate grade and thickness of rectangular steel for the frame and splitter head to withstand significant pressures while maintaining a sharp edge. The user seeks guidance on calculating steel requirements and recommendations for resources to enhance their understanding of welding and hydraulic systems.

PREREQUISITES
  • Understanding of hydraulic systems and cylinder specifications
  • Knowledge of welding techniques and steel fabrication
  • Familiarity with material properties, specifically steel grades
  • Basic engineering principles related to load calculations
NEXT STEPS
  • Research "Welding techniques for structural steel" to enhance fabrication skills
  • Study "Material properties of steel grades" to determine suitable options for the splitter head
  • Learn about "Hydraulic system design" to optimize cylinder selection and application
  • Explore "Load calculation methods for structural frames" to accurately size steel components
USEFUL FOR

This discussion is beneficial for mechanical engineers, fabricators, and entrepreneurs in the tree removal and firewood processing industries looking to design and build custom wood splitting machinery.

BancheroTreeS
Messages
1
Reaction score
0
I am designing a wood splitter capable of splitting a 42" diameter log into 42 pieces in one cycle. The design utilizes a stationary multi-wedge splitter that will cut the log like a french fry press. The strongest hydraulic cylinders used in industrial firewood applications is about 90 tons. For various reasons (which I can get into if you like...)I want to use an even stronger cylinder 100-150 ton.

I have learned all I can about hydraulics, now I am now trying to learn about welding the steel frame and the splitter head. How would I calculate the size and thickness of rectangular steel for building a frame that can take these presures? What do you think would be the best choice of steel for a splitter head utilizing 1/4-3/8ths steel capable of maintaining a moderately sharp edge and withstanding ridiculous pressures without cracking or bending? A resource so I can learn how to do calculations myself would be great.

OK...for those who have read this far, a little back round. I do large tree removals and I would like a super heavy duty wood splitter to tow behind a truck like a wood chipper. I can dramatically increase profit if I eliminate most of the steps in the firewood process like rolling the wood rounds up a ramp into the back of the truck, unloading the truck, having a big corp yard, splitting the wood either by hand or with a single wedge hydraulic splitter, loading the truck again and delivering. The idea with my machine is the wood is handled once with the assistance of a winch and hydraulic log lifter to load the splitter and a short conveyor belt into the back of the truck. There are large firewood processors on the market but they are for processing 25' logs from the forestry industry. These machines have a log loading deck, a circular cut off saw, a multi-wedge splitter and and conveyor belt. The biggest logs the processors will take is 30" but I often work with wood larger than that. 42" is the longest bar my chainsaw will take and seemed like a reasonable restraint to my ridiculous project. In tree removal we often have to work with smaller chunks and cannot justify a $150,000 log processor. I'd like to build my machine for less than $15k.

Ok...questions again.
1. What grade steel should I be looking for for building the multi-wedge splitter?
2. What size and grade steel do I need to build a frame for the hydraulic cylinder that can withstand up to 150 ton of pressure?
3. Can someone recommend a resource so I can learn all this great stuff for myself?

Thanks everyone.

Matt B
 
Engineering news on Phys.org

Similar threads

  • · Replies 18 ·
Replies
18
Views
697
Replies
3
Views
2K
Replies
13
Views
3K
  • · Replies 11 ·
Replies
11
Views
3K
Replies
3
Views
4K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 12 ·
Replies
12
Views
10K
Replies
2
Views
2K
Replies
6
Views
2K