Supplier of Precision Stampings, Electrical Contacts, Engineered Assemblies and Specialty Products    
   
BRAININ STAMPING & DESIGN CONSIDERATIONS – 3

Extruding:
A progressive tool can extrude by forming material. The smaller the pre-pierce diameter, the larger the extrusion height. The outside of the extrusion cannot be controlled.

 Extruding Tip 1

A progressive tool can also extrude by shearing material.

 Extruding Tip 2

 

Coining:
A progressive tool can form features such as dim-ples, counterbores and chamfers by coining material.

 Coining Tip 1

 Coining Tip 2

 Coining Tip 3

Tapping:
A progressive tool can tap or thread a part. The additional tooling cost to do in-die tapping is $8,000 to $12,000. The benefit of the in-die tapping process is the elimination of a secondary operation. A progressive tool with in-die tapping
can run up to 200 SPM.

 Tapping Tip

Riveting:
A progressive die can be designed to assemble a rivet. Bowl feeding a contact rivet into a progressive die for staking into a blade is known as Rivet Insertion. Forming a contact in the progressive die is known as Rivetlay or Wire Insertion.

 In-Die Riveting


Welding:
It is possible to resistance weld in a progressive die. Silver wire or contact tape can be welded to the strip base material and the die can form or coin an electrical contact to size. A shear force of up to 200 lbs. can be achieved between the strip and the contact material, depending on the materials employed.

 In-Die Welding

   
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