Our customer needed to manufacture gum drop shaped tabs with ½” holes using their Marvel MSIW60D ironworker. Our engineering team determined a two-step operation would be necessary to produce these tabs.
The first operation included manufacturing gum drop shaped tooling to fit the oversize attachment. The punch was machined with a flat face and we used .028” clearance to ensure each tab would be free of any distortions. Lastly, it was critical to machine a 1/4“x1/8” keyway on the punch and whistle notches on the die to provide proper alignment during the punching process.
To begin the second operation, we replaced the oversize attachment with the standard attachment for punching the ½” round holes. This is an easy switch and tooling is more cost effective. We designed a die with 3 alignment pins to guarantee the hole would be punched in the same position on each tab.
The customer will weld these onto their product and utilize the round holes for bolts.
Need tooling for a similar application? Send us a picture or drawing and we can make it happen!