Holding Method for Wire EDM Blanks

摘要

This idea discloses the method we use to attach hardened pieces of tool steel to an Erowa block for subsequent Wire EDM operations. The upper portion of Fig #1 shows the Wire EDM blank assembled to an Erowa holder ready for wire cutting. The lower portion of Fig #1 shows the individual pieces prior to assembly. The center blank is a soft piece of 420 stainless with two 1/8" dowel holes and a 10-32 tapped hole in the middle. We utilize two tack welds to hold the hardened steel to the soft blank, then this blank is fastened to the Erowa block with a 10-32 screw.