39th Precision Sheet Metal Technology Fair
Sheet metal parts (47 entries)
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- Sheet metal parts
Plastic Sheet Metal Processing (Parts029)
Parts029
Plastic Sheet Metal Processing
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・Size: W100 x D90 x H40 mm
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・Accuracy: ± 0.3 mm
・Programming time: 60 min
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・Processing time: 120 min/quantity
・Quantity: 1
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・Material: ペット樹脂
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・Thickness: 1.0 mm
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・Type: Original work
Process
CAD/CAM
Punching
Bending
Strengths
Using standard sheet metal bending machinery typically reserved for metal, a complex 3D structure was formed from a single, highly brittle 1 mm plastic sheet solely through multiple precision bending operations. Because plastic fractures easily and exhibits a distinct springback behavior unlike metal, delicate control of tonnage and bending angles is required. By carefully observing the material's behavior, consistent and high-precision sequential bends were achieved. When folding a intricate form from a single sheet, slight dimensional deviations after each bend can lead to overall distortion; therefore, precise blank layout calculations and bending sequences were thoroughly optimized to create a flawless 3D geometry without dedicated tooling. This project serves as a demonstration of applying sheet metal craftsmanship to non-metallic materials and highlights new potential for low-volume production.
