Extruded Tapped Hole Sheet Metal

Extruded tapped hole u nuts push the workpiece material downward to create a tapped hole.

Extruded tapped hole sheet metal.

Therefore the minimum distance between the extruded hole to edge if maintained. Creating an extruded hole using a punching process requires extreme pressure force. Avoid large sheet metal parts with small bent flanges. They are used in thin materials.

The tooling produces a full range of threaded holes in. Extrusions our commonly used to accept sheet metal screws or permit tapping into a deeper distance than just the material thickness. The minimum distance from an extruded hole to a bend is three times the material thickness plus the bend radius. Performance in extruded holes is slightly higher than in drilled holes.

The following illustration shows the extruded hole geometry. First prevailing off torque is an indication of locking torque and resistance to vibrational loosening and is favorably high for extrude tite screws in thin sheet metal. Tapped holes may need to be re tapped after plating to ensure accuracy. Extruded hole to part edge b 3t d 2.

A pre punched hole is required as a one hit pierce and extrude gives poor hole quality and has limited adjustment on the machine. Avoid large sheet metal parts with small bent flanges. Design for manufacturability sheet metal guidelines bends for the ease of manufacturing multiple bends on the same plane should occur in the same direction. Prepunched or extruded holes on the sheet are threaded through a coordinated rotation of the turret press autoindex station and ram stroke.