Crushers

[Bodge Job]

I was just wondering how much experience people have with crushers, like how many tones of force it takes to go though different materials, like I guess with a shaping tip, a tone of force would go though 5mm of hdpe quiet easily? But I not really know, any information will be help full

[mattsdragons]

Re: Crushers

200kg goes through 5mm easily

[Bodge Job]

Re: Crushers

Really, as little as that? Wow, I sopose you can hammer a nail into it pretty easy... But what about metals? I know that would take considably more, but what like? And I don't know how I would go about working it out? Any one got any ideas?

[dragonmaster_1]

Re: Crushers

Built a featherweight crusher a few years ago. The acuator had 10000 n of force it had about 1000kg at the tip. aheres a few vids of it against different materials.

http://www.youtube.com/watch?v=kc6PmRQn_no

http://www.youtube.com/watch?v=pcxku4u_DQU

[mattsdragons]

Re: Crushers

is that dragonclaw?

[dragonmaster_1]

Re: Crushers

Yes.
The only problem was it broke its own back and to make it strong anoth to take the force could not get it under weight

[Laser]

Re: Crushers

Built a featherweight crusher a few years ago. The acuator had 10000 n of force it had about 1000kg at the tip.

That must be one big actuator

[Bodge Job]

Re: Crushers

Wow that's some descent crush, I was going to have about triple that at the tip, how well do u think that would fair against steel (assuming the crunching tip is string enough)

[Laser]

Re: Crushers

idk but you would likely blunt the tip of the crusher

[dragonmaster_1]

Re: Crushers

What would you be using to get triple the force.
Dragonsclaw had a 6mm ali base and 10mm ali sides and it snapped the ali sides. heres a few pics

[billy breach]

Re: Crushers

would a drill motor and threaded rod set up give you a force enough to go through hdpe? or would it need to be hydrolic or pneumatic...etc

[Bodge Job]

Re: Crushers

I was thinking of using a full pressure pneumatic ram.... As I can't fauns a descent actuator, or a light enough hydrolic system.... So I was going to use a hefty ram....But idk how I'd make it sting enough for that, a big lump of hardox me thinks....

[PJ-27]

Re: Crushers

That got through 2mm Ti worryingly easily.....

[Laser]

Re: Crushers

But idk how I'd make it sting enough for that, a big lump of hardox me thinks....

wouldn't weight be an issue then???

[calumco]

Re: Crushers

i've made a few crushers, and i've got a half finished one i started a while ago. i found the main problem was like tony found the forces used ending up breaking the robot its self!

my vertical crusher uses a 200kg actuator and that goes through 5mm poly and hdpe like its nothing even 8mm and it happily eats through computer towers etc etc

be nice to get it to a full combat event where i could have some one on ones cause mine could really damage the likes of explosion and some of the other really good robots with only thin hdpe armour- just a case of finding the time to finish things