Stainless steel socket bullet stamping accessories, hardware spare parts processing, precision irregular-shaped hardware stamping parts.

Stainless steel socket bullet stamping accessories, hardware spare parts processing, precision irregular-shaped hardware stamping parts.

Progressive Stamping Process Overview

Progressive stamping is a high-efficiency metalworking process that integrates punching, coining, bending, and other forming techniques, combined with an automatic feeding system. A strip of metal, unwound from a coil, is precisely fed through multiple stations of a progressive stamping die. Each station performs one or more sequential operations, culminating in the creation of a finished part. The final station typically carries out a cutoff operation that separates the completed part from the carrier strip. The remaining web and previously punched scrap are treated as waste and, in high-volume production environments, are often transported to scrap bins via underground conveyor systems.

The progressive die is mounted in a reciprocating stamping press. As the press moves upward, the upper die lifts, allowing the strip to advance to the next station. When the press descends, the die closes and performs the designated forming operation. With every stroke, a fully formed part is ejected from the die.

To ensure accurate processing, the strip must be precisely indexed between stations—typically within a few thousandths of an inch. This is achieved using conical or bullet-shaped pilots, which insert into pre-pierced alignment holes on the strip. These pilots ensure accurate positioning, compensating for any limitations in the feed system's precision.

While progressive stamping can also be performed on transfer presses, these systems differ by using mechanical fingers to move parts between stations. For parts requiring complex, multi-step forming within the die, progressive stamping offers distinct advantages, most notably high-speed production, often exceeding 800 parts per minute.

However, progressive stamping does have limitations. It is not ideal for deep drawing operations, where the draw depth exceeds the part's diameter. Such tasks are better suited to transfer presses, which operate at lower speeds and allow components to remain securely held throughout the forming cycle. Progressive presses, by contrast, guide parts only during part of the cycle, typically with spring-loaded sleeves, which can introduce issues such as imprecise concentricity, ovality, or non-uniform wall thickness.

Comparison to Transfer Presses – Limitations of Progressive Stamping:

• Higher raw material consumption due to continuous carrier strips

• Increased tooling costs, as progressive dies are built in large, complex blocks with limited station-level adjustability

• Inability to perform certain operations requiring part removal from the strip mid-process, such as beading, necking, flange curling, thread rolling, or rotary stamping

Progressive dies are typically made of tool steel, which offers superior durability, maintains a sharp cutting edge, and resists wear under high-impact, high-speed production.

Tooling Considerations:

Tooling cost is primarily influenced by the number and complexity of part features. It is generally recommended to keep part geometry as simple as possible to minimize tooling complexity and cost. Features located too closely together may not provide adequate clearance for the punch and could require additional stations. Similarly, narrow cuts or fine protrusions can complicate tool design and impact process reliability.

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

Stamping die details:

2006,Established in Xiamen, METS is a professional hardware company specialized in mould design, mould manufacturing of contact and machine shell, automotive, electronics, LED lampshade, lead frame and lamination core(stator and rotor) etc. As well as precision metal stampings production.Our engineer, design, construct and validate highly precise metal stamping dies and tooling system solutions. Our team of experts partners with leaders across industries to provide tooling solutions that use high-strength materials, demand tight tolerances and require short lead times

METS has been focusing on the R&D of high speed precise progressive die as well as stamping production since its establishment.

Process technology capability:

A. Hight precision. The precision can reach 1-4μm,Ra 2μm.

B: Zero loss of material use.

C: The min. space between connectors is 0.2mm
D: The pressing speed can reach 800SPM
E: The rate of hole diameter and thickness is 0.85:1

F: Standard component use famous brand
G: The stamping material thickness is 0.05-2.0mm

H:Rational construction , easy accessibility. Good for maintenance

We stamp metal parts ranging from small precision parts, such as electronic equipment and musical instruments, to large precision components, including processing equipment and architectural components that are decorative and functional. All-New Stamping has the capability to work in quantities from prototype runs to full production runs.

Our stock thickness for our ferrous and non-ferrous metals ranges from 0.01mm to 2mm and the stock width ranges from 10mm to 1000mm with pre-plated and finishing options. We also work with a complete range of materials to offer customers a large choice in specifications, including:

Steel
Aluminum
Stainless Steel
Plastics
Copper
Brass
Specialty Metals

102,No.42,Xibin Road,Xinglin,Jimei district,Xiamen,361022,China