what are the classifications of precision stamping dies

Precision stamping dies can also be categorized by structure or application into single-station dies, progressive dies, compound dies, transfer dies, and fine blanking dies.

Mold selection should comprehensively consider part geometry, material, dimensional tolerance, production volume, equipment capability, and cost.

Classification of precision stamping dies:

1. Shearing (blanking/punching) dies:
   • Function: Use cutting action to sever sheet material or punch out the required profile.
   • Typical dies: blanking dies, piercing dies, shearing dies, trimming dies, edging dies, cutoff dies, punching dies.
   • Applications: hole making, blanking, separating scrap, etc.
2. Bending (forming) dies:
   • Function: Bend a flat blank along one or more lines to form angled parts.
   • Typical dies: general bending dies, cam bending dies, hemming (flanging) dies, radius bending dies, seam bending dies, offset bending dies, etc.
   • Applications: box flanges, flanges, brackets and other bent parts.
3. Deep drawing (draw) dies:
   • Function: Form flat blanks into bottomed, seamless containers or deep-cavity parts by multi-stage drawing.
   • Typical dies: single- or multi-stage draw dies, draw-and-trim dies, redraw dies, etc.
   • Applications: oil cans, tank bodies, cup-shaped parts and other deep-drawn components.
4. Forming dies:
   • Function: Alter the blank shape by localized or overall plastic deformation (non-cutting methods).
   • Typical dies: stretch forming dies, flanging dies, necking dies, beading dies, curling dies, etc.
   • Applications: strengthening ribs, flanges, decorative patterns, and complex surface forming.
5. Stamping/pressing (extrusion, embossing, imprinting) dies:
   • Function: Use high pressure to make metal flow or compress into the desired shape, or to emboss patterns or marks on the surface.
   • Typical dies: extrusion punches, embossing dies, stamping/imprinting dies, end-face extrusion dies, etc.
   • Applications: forming thin-wall high-strength parts, surface decoration, marking, etc.
6. Compound and progressive (sequence) dies:
   • Function: Complete multiple operations (blanking, bending, drawing, forming, etc.) continuously in one die set or on one press to improve efficiency and ensure positioning accuracy.
   • Typical dies: compound dies, progressive dies, transfer dies.
   • Applications: high-volume precision part production, such as electronic housings and precision connector parts.