Top performance and efficiency sheet metal stamping dies for hardware electroacoustic components

Progressive Stamping – Precision Metalworking for High-Efficiency Production

Progressive stamping is a highly efficient metalworking process that combines punching, coining, bending, and other forming techniques. These operations are integrated into a single progressive die set with an automatic feeding system to streamline high-volume manufacturing.

The process begins with a metal strip fed from a coil, which is pushed through a series of die stations. Each station performs a specific operation, gradually shaping the metal into the desired part. The final station executes a cutoff operation, separating the finished component from the remaining strip (referred to as the carrying web). Any excess material, including previously punched-out sections and the web itself, is ejected as scrap—typically via underground conveyors in automated production lines.

The die set is mounted in a reciprocating stamping press. As the press moves upward, the top die lifts, allowing the material to feed forward. When the press descends, the die closes and performs the stamping operation. With each press stroke, one complete part is produced and removed from the die.

Because each station relies on the precise positioning of the strip, alignment is critical. To ensure accuracy within a few thousandths of an inch, conical "pilots" engage with pre-pierced holes in the strip, supplementing the feed system which may lack sufficient precision.

Progressive stamping can also be performed using transfer presses, which utilize mechanical fingers to move components between stations. While transfer presses operate at slower speeds, they are better suited for deep drawing—a process where the depth of the drawn part exceeds its diameter.

Advantages of Progressive Stamping:

• High Speed Production: Capable of producing 800+ parts per minute, ideal for large-scale manufacturing.

• Efficiency: Multiple operations completed in a single die set, reducing handling and processing time.

• Automation Friendly: Easily integrated into automated production systems.

Limitations:

• Not suitable for deep drawing or forming operations that require the part to leave the strip (e.g., beading, flange curling, thread rolling).

• Tooling cost is higher due to integrated block die construction.

• Material usage is less optimized compared to transfer stamping.

• Complex features or tight tolerances may require additional stations or compromise die lifespan.

Tooling is typically made from hardened tool steel, ensuring durability under high loads and maintaining sharp cutting edges for long-term performance.

Cost Considerations:

Tooling cost depends largely on part complexity and the number of operations. To minimize tooling expense:

• Avoid features placed too closely together.

• Limit narrow cuts and thin protrusions.

• Simplify designs whenever possible.

Q: What’s your manufacture capability?
---- We use Sodick/Charmilles to frabricate die inserts,dimension we can do is +/-0.002mm.

Q: Can you make all the dimensions are according to our design/samples?
---- We can guarantee that all the dimensions are made according to your drawing/sample.Please notice that dimension tolerence we can do is +/-0.003mm.

Q: Did the stamping die suit for my press machine?
--- The stamping die is made according to your press machine’s specification.Before start making die parts,we will send the design for your approval.

Q: What’s your advantage compare with other supplier’s on the market?
---- We are stamping factory,have a team contains die design,making,maintance and stamping production.We know how important the good mold for stamping production.

---- All our engineers are with more than 10 years working experience.They are more professional on precision stamping field.

---- All the die parts we made are by Slow-speed wire EDM,can gurantee the dimension.Many of them make it by middle-speed wire EDM/fast-speed wire EDM