Oscillation overlaid shearing of sheet
|Autoren:||Behrens, B.-A.; Schaeper, E.-F.; Kamp, M.|
|Veröffentlichung:||Production Engineering, Research and Development, August 2007, pages 19 - 24|
One of the most frequently used sheet metal processing methods is shearing. While using the shearing method a cut edge is usually created which often clearly fails to meet the desired quality. The optimum cut edge quality is as rectangular and as burr-free as possible. Trials made at the IFUM showed, that the quality of cut edges can be improved by overlaying the movement of the punch with an oscillation. Through different test rows the mechanism and impact of oscillation on the shearing process are investigated. This paper reports about tensile and friction tests made on sheet metal with oscillation overlay, high speed cutting tests and test series with a new designed tool which allows stamping sheet metal also with an oscillation overlay. The test series show, that oscillation can have an effect on the tensile strength, friction and work hardening of sheet metal and as a result on the cutting force and the cut edge quality.