Stamping

Stamping

What is Metal Stamping?

In its most basic form, metal stamping is a manufacturing process combining powerful press machines with high precision tool and die sets that form, punch, bend, draw, or coin raw material in coil or blank form. Metal stamping is an ideal option for anyone needing to make large quantities of parts that are essentially identical. Qualtek specializes in progressive die stamping which allows us to add features to parts in a progression while keeping the parts attached to the strip of raw material until all the desired features are complete. With every stroke of the press the tooling will form/punch/coin the parts until the last progression removes the parts from the strip. 

Press Equipment
  • AIDA Servo (2)
  • COE Servo Feed Line
  • Bruderer High Speed Mechanical
  • Sutherland — SEYI Mechanical
  • Komatsu Mechanical
  • Niagara Mechanical
Metal Types
  • Low Carbon Steel
  • Stainless Steels
  • Hardened Spring Steel
  • Aluminum
  • Copper
  • Brass
Stamping Tolerance
  • 1/- 0.002
  • Near fine blanking tolerance
    1/- 0.0002
Gauge Range (in inches)

.002 up to .25

  • Servo-press technology
  • Progressive die
  • Compound die
  • Deep draw
  • High speed
  • Riveting
  • Vibratory tumbling
  • Rotary tumbling

A Servo Press uses a servomotor as the drive source. The advantage of the servomotor is that it can control both the position and speed of the output shaft compared to a constant cycle speed. This allows us to execute multiple capabilities in the same machine tool whether it is blanking, deep drawing, progressive die or near fine blanking. Servo presses give you the flexibility to run different motion profiles, such as eccentric, link, multiple restrike, and pendulum motion, in the same press. The press stroke does not have to be cyclical. Because it can start and stop the slide at any point in the stroke, the stroke can be shortened to minimize the nonproductive portion of the stroke. The most common tactic to increase productivity is to run the servo press in a pendulum motion, using the shortest stroke required for a particular part.

Because a servo can run slower during forming, die designers can reduce the number of draw stations and, therefore, die cost. Slower speeds in the forming portion of the stroke can also reduce wall thinning, allowing you to reduce material thicknesses, and thus material cost, without defects. Slower forming speeds help minimize the scrap caused by material inconsistencies.

Servo presses consume less energy for peak amperage compared to their equivalent mechanical presses. Most servo presses also regenerate energy during braking by storing the energy in capacitor banks, further reducing energy use.

Servo presses consume very little energy when the press is idle, such as during die changeover and production stops during part inspection.

A client came to Qualtek needing to produce an affordable and single-use part for a medical device. To complete the project, the stamping required complicated metal forming and shaping. This was developed and accomplished at Qualtek in a progressive die that utilized advanced CAD features.

After stamping, this part required special finishing. The unique advantage of working with Qualtek is that the client could solve tool and die, stamping, and finishing problems in one location.