Coining (Counter Sink) • Extrusions

EXTRUSION

Master Unit Accepts Replaceable Extrusion Insert

.25”(6,1mm) Maximum B dimension Dedicated Quick-Set Punch Holder and Die must be used for sizes > .25”(6,1mm) 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.  The diameter of the pre-punched hole ultimately determines the height of the extrusion.  The limitation to the height is simply the metal’s limit of being drawn (stretched).     FORM DOWN            FORM UP

 

 

 

 

Replaceable Insert

Top  *FIP50  Bottom *FID50W4 Delivery 2-5 days

Replaceable Insert

Top  *FIP54 $___  Standard Die ATB-Dr

Delivery 2-5 days

PUNCHING SHOULDN’T BE DONE IN BLANKED  AREA’S

COINING (Counter Sink) TOOL

Master Unit Accepts Replaceable Coining Insert

.5”(12,mm) Maximum B dimension Dedicated Quick-Set Punch Holder and Die must be used for sizes > .5”(12,mm)  

 

 

A coined hole is used to enable a flat head screw or rivet to fit flat or below the surface of the sheet.  As the below diagram shows, C.E. Tooling recommends use of a pre-punched hole before the actual coining is performed.  This achieves the highest quality coined hole, with no roll-over, minimal burr, and excellent tool life.  Look to below chart of common screw sizes. 

If a one operation pierced and form is Chosen, be advised that the hole quality and tool life will be greatly reduced.  Reason: The metal being coined has no were to go but to bulge on the top of sheet (roll over), against the pilot tip and pushes below the sheet leaving a large burr.  This binding of the pilot tip by the material causes rapid galling which if not constantly cleaned off can cause the pilot tip to be snapped off during the stripping cycle of the stroke.

 

                              FORM DOWN                        FORM UP

          

 

 

 

 

 

Note: Minimum C = B-(2((Angle/2)TAN x mat.thickness))

    Replaceable Insert        Replaceable Insert

                        Top  Insert *FIP56   $___          Top  Insert *FIP58     $___

  Bottom Use Standard Die  ATB-Dr  $      BOTTOM  Insert *FID58  $___

                       Delivery 2-5 days             Delivery 2-5 days

Pre-Pierce Hole Formula.  (Note, this will estimate to large size) after test hits, size may be reduced slightly to achieve best cosmetic results on material type and thickness being punched.

Pre-Pierce Hole = C + ((B-C) / 2)

 Form Depth > 80% of Material Thickness not suggested.

 

CE TOOLING

Form Inserts for CE, WT & Amada Style Holders

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