Extruded Tapped Hole Sheet Metal

Prepunched or extruded holes on the sheet are threaded through a coordinated rotation of the turret press autoindex station and ram stroke.

Extruded tapped hole sheet metal. They are used in thin materials. The minimum distance from an extruded hole to a bend is three times the material thickness plus the bend radius. Extrusions our commonly used to accept sheet metal screws or permit tapping into a deeper distance than just the material thickness. A pre punched hole is required as a one hit pierce and extrude gives poor hole quality and has limited adjustment on the machine.

Design for manufacturability sheet metal guidelines bends for the ease of manufacturing multiple bends on the same plane should occur in the same direction. The following illustration shows the extruded hole geometry. In low carbon steel sheet metal the minimum radius of a bend should be one half the material thickness or 0 80 mm. Tap fix screws for extruded holes in light gauge steel this article provides tap fix hole size recommendations for metals using light gauge punched extruded materials.

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. The tooling produces a full range of threaded holes in. Avoid large sheet metal parts with small bent flanges. Extruded tapped hole u nuts push the workpiece material downward to create a tapped hole.

Therefore the minimum distance between the extruded hole to edge if maintained. Creating an extruded hole using a punching process requires extreme pressure force. Performance in extruded holes is slightly higher than in drilled holes. Extruded hole to part edge b 3t d 2.