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What are the effects of blanking clearance on burr?

by:Fortuna     2021-02-08
Blanking clearance are the main factors influencing the burr size, but the material not at the same time its influence degree have bigger difference. As pictured in the fall for low carbon steel plate with burr height gap clearance variation law. The determination of good clearance? Burr height h along with the change of relative blanking clearance Z/t have a relatively stable stage, when Z/t change value is between 8% ~ 14%, and the h value change is very small. And when Z/t is too big or too small, h value is likely to increase. The determination of good clearance? Theory is the main basis of determining method guarantee crack overlap, to get a good cutting surface. Figure is in the process of blanking transient state began to crack.
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