Specific Anti-Wrinkling Design Methods for Aerospace Micro Screws

2026,09,08

1. Optimized Design of the Edge Pressing Device

The edge pressing device is the first line of defense against wrinkling. A reasonable edge pressing design should consider the following factors:

Precise control of the edge pressing force: Use a hydraulic or pneumatic system to achieve adjustable and controllable edge pressing force.

Optimized edge pressing ring shape: Design an edge pressing ring contour that matches the product shape.

Segmented edge pressing technology: Use segmented edge pressing for complex-shaped products to achieve local pressure adjustment.

2. Refined Design of Aerospace Micro Screws Surfaces

A reasonable design of the Aerospace Micro Screws surface is crucial to preventing wrinkling:

Optimized transition fillets: Avoid sharp corners and use appropriate transition fillets to reduce stress concentration.

Controlled surface slope: Design a reasonable draft angle based on material properties to promote smooth material flow.

Local reinforcement structure: Add reinforcing ribs or bosses in wrinkle-prone areas to improve local rigidity.

3. Drawbead System Design

Drawbeads are an effective means of controlling material flow:

Drawbead Arrangement Strategy: Determine the position and number of drawbeads based on the product shape and material properties.

Drawbead Cross-Section Shape: Select an appropriate cross-section shape (e.g., semi-circular, trapezoidal) to adjust resistance.

Drawbead Height Adjustment: Determine the height through experimentation to balance anti-wrinkle and anti-cracking effects.

4. Process Parameter Optimization

Reasonable process parameter settings are equally important for anti-wrinkle:

Blank Size Optimization: Determine the blank shape and size to reduce excess material accumulation.

Lubrication Scheme Selection: Select an appropriate lubricant and coating method based on the material type.

Forming Speed Control: Optimize the stamping speed curve to avoid sudden speed changes that could lead to material instability.

Author:

Mr. yjfastener

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