Compound vs. Progressive vs. Transfer Die

Compound Stamping, progressive Stamping, and transfer stamping are methods used in many industries to produce metal stamped parts. Three stamping methods enable manufacturers to meet unique design specifications, tolerances, and volumes, but choosing the correct process method that meets your needs is crucial.

Compound Die

Compound die stamping is a metal stamping method that performs multiple Bending, stamping, or cutting simultaneously in one stroke. It is an ideal choice for producing flat parts such as washers and wheel blanks in medium or large quantities. Compound stamping is a high-speed stamping process, but larger components may take longer to leave the machine, thereby reducing overall speed.

Compound stamping brings various benefits to manufacturers. The benefits of using compound stamping include:

1. The cost of the mold is lower than that of the progressive mold

2. Efficient and fast production of simple and small parts

3. Contribute to high repeatability of single mold cases

4. One stroke produces flatter parts

Progressive Die

Progressive die stamping can produce parts with strict tolerances in large quantities. This stamping method can simultaneously shape, bend, and stamp parts from metal coils fed through a stamping machine.

In progressive stamping, the workpiece remains attached to the metal strip from start to finish. The parts can only be disassembled at the last step of the stamping process. This process is compatible with a range of materials; However, it requires expensive steel tools and is not suitable for parts that require deep drawing.

Progressive stamping provides several benefits, including:

1. Save time and money by performing multiple operations simultaneously

2. Reduce waste

3. Capable of long-term production runs

4. Reduce labor costs and reduce setup

5. Allow complex geometric shapes

6. Can quickly produce a large number of small parts with strict tolerances

Transfer Die

Transfer die stamping starts by separating the workpiece from the metal strip and focuses on individual parts. This process relies on automation to transport workpieces to several workstations and align them, each of which performs different operations. The multi-step process of transfer die stamping allows for highly complex design, including threads, ribs, and knurling.

Transfer die stamping is suitable for manufacturing deep drawn parts, as the removal of metal strips occurs at the beginning of the stamping process. It is also an ideal choice for manufacturing pipes and applications that require the separation of workpieces from metal strips.

Transfer die stamping provides manufacturers with the following benefits:

1. Cost effectiveness of small-scale production operations

2. Improved versatility

3. Efficient production of complex parts

4. Suitable for large parts

5. Reduce the need for secondary operations on specialized parts