Extrusion Punch For Sheet Metal

Heavy dutyextended reach bench mountlever operated hole punches.

Extrusion punch for sheet metal.

To setup the punch first drill a pilot hole into a piece of sheet metal with a step drill bit. Applications include for self tapping sheet metal screws or in thicker material to permit tapping for machine screws. A normal punch stroke shears metal and creates a slug. This can be used to create holes for self tapping sheet metal screws or machine screws and it reduces the need for secondary operations.

But the material also can be forged upward often by as much as 50 percent of the material thickness by stopping the punch stroke before the metal fractures and shears off as a slug. The punch should be polished linearly to a mirrorlike surface finish. Use twice the punching force of standard extended reach punches to make holes in structural steel channels and angle iron. Hole punch sheet metal vinyl plastic.

A pre punched hole is required as a one hit pierce and extrude gives poor hole quality and has limited adjustment on the machine. When i do the folding parts where the punches are made seems not to be connected to the sheet metal. I tried both punch and extrusion for the parts i need. Use the malco hp18kr for making holes along the edge of sheet metal and vinyl plastic including rivet or screw fastener holes in metal ductwork and vinyl window extrusions or hog ring holes for attaching signs or bumpers to chain link fences or equipment cages.

The hp18kr hole punch does the work of more expensive bulkier punches faster and easier. I have a need of creating a folded sheet metal which has few punches in it. Unipunch tooling can be used to simultaneously punch a hole and extrude the material down. Relieve the punch after extruding the straight section to allow for lubricant to settle into the negative portion of the punch.

In sheet metal extrusion a tool is used to punch a hole and extrude the material downward at the same time. Let s make holes faster. Place the die over the draw stud before inserting the stud through the pilot hole. Fabricators usually use cold forge embossing to create text and designs on the sheet metal surface.

The punch is then. The extrusion punch should be made of highly wear resistant tool steel powdered metal pm preferably or solid carbide material. Unipunch custom metal fabrication c frame punching units will increase throughput reduce changeover time and enhance overall quality.