General Science and Philosophy

    

Comparison of Methods Controlling Slug Pulling by Using an Indirect Method in Automotive Industry

Authors: Viktor Tittel, Ľuboš Bernadič

Slug pulling occurs if a slug is caught to the punch face and afterward the punch pulls the slug up from the die. Slug pulling is a cause of problems. The aim is to give an answer which of methods is more effective than the others. Researched holes were cut by using a press with various cutting tools. Slug pulling rate was observed by an indirect method of slug pulling rate measurement. The method is based on observation of indentations on workpieces caused by pulled slugs. It was found that a slug is most often pulled by common punch while on the other hand usage of ejector punches and special dies with grooves is more effective with no pulled slug. A surprise is that efficiency of the aeration punch has been higher than expectation. The shear ground punch and the stepped punch are placed in the middle of the chart.

Comments: 15 Pages.

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Submission history

[v1] 2014-05-08 02:14:27

Unique-IP document downloads: 2155 times

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