Simulation of shearing blade life
Simulation of shearing blade life
(OP)
Hi Guys,
I'd like to ask you for support to estimate of part life.
Real process:
Two cut-off (hardener tool steel,tested 64HRC) blades cutting the copper wire OD=2mm during serial wire production. V-edge profile blades shearing this wire with constant force and after 15k cycles new blade edge is dulled/blunted.
Is it possible to try estimate life of the blade?
All B.C.s to analysis are known like: temp, force, material etc.
Thanks you for any suggestion.
I'd like to ask you for support to estimate of part life.
Real process:
Two cut-off (hardener tool steel,tested 64HRC) blades cutting the copper wire OD=2mm during serial wire production. V-edge profile blades shearing this wire with constant force and after 15k cycles new blade edge is dulled/blunted.
Is it possible to try estimate life of the blade?
All B.C.s to analysis are known like: temp, force, material etc.
Thanks you for any suggestion.





RE: Simulation of shearing blade life
RE: Simulation of shearing blade life
Tata
RE: Simulation of shearing blade life
Actually I have almost all inputs for material properties, all BCs from real process.
Are you able to support my project start? Thanks
PS. At picture you can see the blades at operating conditions.
RE: Simulation of shearing blade life
Tata
RE: Simulation of shearing blade life
RE: Simulation of shearing blade life
RE: Simulation of shearing blade life
Ed Danzer
www.danzcoinc.com
www.dehyds.com
RE: Simulation of shearing blade life
RE: Simulation of shearing blade life
In order to use FEA to try to solve this problem you would need a model of the blade wear process. This would require a range of test results and detailed analysis of the cutting and wear process for different blade materials or surface treatments. It seems to me that you have a limited range of test results and no such model.
If I were asked to improve the life of these blades for real I'd take a look at some of the metal coating techniques available, such as those provided by Bodycote Metallurgical Coatings:
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RE: Simulation of shearing blade life
Thorpe Thank you for respond.
I am not a student - unfortunately.Actually I'm testing wear process upon material coats and axial displacement, no results yet.
Basically I have high opportunity to change blades and propose the best solution to extend the wear process.
Which surface treatment process could be the best for these blades? (tool steel material).
Is it possible to simulate of material coat in ie. ANsys?
RE: Simulation of shearing blade life
How to edit a post after submit in this forum??
RE: Simulation of shearing blade life
Then you need to look at whether a single V-shape is really as good as it gets. Many cutting knifes have compound V-shapes, and potentially, an optimum shape might be an ogive.
TTFN
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RE: Simulation of shearing blade life
Blade is dulling across the blade edge. It is a plastic surface yield deformation after 8000 cuts. After that cycles blades begin to not cut all lateral copper wire and stards to tear and bend the wire.
V-blades always have been used same as now-but not for such of high production. These type of blades are recomended by customer for this type of wire.
Of course, I would like to simple check the same blades but with different cutting edge angle.
Is there posibility to simulate this wear process by FEA??
Thank you in advance.
RE: Simulation of shearing blade life
I think you're getting overly hung up on using FEA for this analysis. FEA analyzes bulk properties, and cannot simulate permanent distortion, since the element positions are set, apriori, with semi-elastic connections. I'm not even sure how you'd model a shearing operation using FEA.
TTFN
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RE: Simulation of shearing blade life
TOP
CSWP, BSSE
www.engtran.com www.niswug.org
"Node news is good news."
RE: Simulation of shearing blade life
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Simulation of shearing blade life
My city library used to have an excellent book on cutting tool design written by a Japanese author. They chucked it after 911 with all the rest of their engineering library. You might look for papers on this subject in Google Scholar. Without some kind of theoretical underpinning you are just going to spin your wheels.
TOP
CSWP, BSSE
www.engtran.com www.niswug.org
"Node news is good news."
RE: Simulation of shearing blade life
http:/
The website shows some really impressive images of simulated chip formation and the company claims their code can calculate tool life. I haven't used the software myself, so I can't say how much of this is reality vs. marketing hype.
RE: Simulation of shearing blade life