Die Design of Stainless Steel Perforated Sheet
Source:www.cn-psp.cnAuthor:河北森驰公司 Last updated:2025-06-14 14:05:16 Browse:
Stainless steel perforated sheets are widely used in industries such as architecture, ventilation systems, and mechanical filtration. In the entire punching process, die design plays a pivotal role in ensuring high punching accuracy, product quality, and tool longevity. This article provides a detailed, practical guide for the die design of stainless steel perforated sheets, helping manufacturers optimize production efficiency and reduce tool wear.
1. Structural Strength of the Punch
The punch bears the majority of the punching force. If poorly designed, it may suffer from longitudinal bending or even breakage. To avoid these risks, consider the following optimizations:
Structural Reinforcement: Design the punch with a stepped shape to enhance resistance to bending;
Material Selection: Use high-strength tool steels or tungsten steel to improve wear resistance and durability;
Interchangeability: Follow standard specifications to ensure easy punch replacement and maintenance.
2. Punching on an Inclined Surface
When punching holes on a sloped surface, the shape of the punch tip should be adjusted based on the angle:
If the inclination is less than 15°, keep the punch tip flat;
If the inclination is greater than 15°, use a punch with a shear angle to enhance shearing efficiency and improve die rigidity, ensuring effective cold stamping.
3. Use of Cylindrical Recess Dies
Wherever structurally feasible, adopt cylindrical recess dies. These dies are easier to manufacture, offer better alignment, and simplify maintenance or component replacement.
4. Dealing with Heat in High-Speed Punching
High-speed punching generates significant heat, potentially causing die clearance variations and thermal deformation. To mitigate this:
Integrate cooling systems in the die design;
Ensure sufficient die rigidity to minimize deformation under heat.
5. Spacer Design for Mass Production
In high-volume production, introducing spacers can buffer impact forces, adjust die clearance, and significantly extend the overall life of the die set.
6. Multi-Hole Simultaneous Punching
When punching multiple holes simultaneously, step differences should be incorporated into the punches. This design distributes the load more evenly and reduces the risk of punch breakage.
7. Punching Thick Stainless Steel Sheets
For thick stainless steel sheets, the punch should include a shear angle at the tip. This staged shearing approach lowers cutting force, minimizes burrs, and reduces deformation.
8. Preventing Chip Accumulation
To prevent chip accumulation that can lead to die jamming or breakage, design forced chip evacuation mechanisms during the early stage of die development.
Stainless steel Perforated sheet
9. Punch Tip Wear and Resharpening
Over time, punch tips will wear and require resharpening. For better maintenance:
Make the punch easily removable and visually accessible;
Remove unnecessary base parts that obstruct inspection;
For multi-tip punches, sharpen each cutting edge individually before sharpening the full surface.
10. Close-Proximity Hole Positioning
When holes are positioned close to fillet radii (R corners) or trimming lines, carefully consider structural clearance to avoid cracking the workpiece or damaging the punch.
11. Forced Discharge for Deep Mold Cavities
For dies with deep cavities or poor chip discharge paths, integrate forced ejection features to avoid clogging and ensure smooth operation.
12. Standard Punch Entry Depth
Maintain a punch entry depth of 1–3 mm into the recess die. This ensures clean cuts and protects the punch tip from excessive wear.
13. High-Precision Hole Walls
For applications with strict tolerance and vertical wall requirements, consider advanced punching techniques:
Polished Punching: Improves wall finish and reduces friction;
Ultra-Precision Punching: Achieves tight dimensional tolerances;
Post-Processing: Techniques like honing, deburring, or wire cutting can be used for finishing.
By optimizing die design for stainless steel perforated sheets, manufacturers can significantly enhance tool life, improve punching precision, and reduce scrap rates. A well-engineered die system is the foundation for efficient and high-quality perforated sheet production.
If you’re seeking customized die solutions or want to improve your existing perforated sheet production process, feel free to contact our engineering team for expert guidance and support.
