Piercing
Function 1. Used as a general through-hole (with lower requirements); 2. Used as a self tapping bottom hole (product design requires a high proportion of bright bands); 3. Used as a high-precision shaft hole (requires no burrs and less fracture zone) (using mechanical deburring or mold chamfering)
Blanking and stamping
Function 1. Used as a general appearance (with lower requirements); 2. Used as a laser welding assembly for butt joints (without burrs, large bright bands, small gaps in fracture bands); 3. Used as a soft decorative support (requires curling or deburring)
Attention: 1. When designing the product, there should be appropriate rounded corners at the connections of each straight line or curve of the punched part (Otherwise, the stress of the concave mold is concentrated and it is easy to be damaged); 2. Considering the machining process of mold wire cutting, the minimum R angle of punched or dropped parts should not be less than R0.2.
Tongue cutting and curved lancing
Function 1. Used as a buckle; 2. Used as a limit; 3. Save processes, improve material utilization, and combine cutting and bending processes into one
Precautions for designing tongue cutting and curved cutting structures:
1) When cutting, the width of the punch should be large enough. When designing the parts, ensure that the distance between the cutting and bending parts is more than 5mm, otherwise the punch strength will be low and the lifespan of the mold will be affected.
2) When designing the mold, the cutting part of the blade should ensure a straight edge of about 3mm to prevent the occurrence of knife breakage. Ensure that there is a gap on both sides of the punch to ensure cutting before bending.
Post time: 2024-01-03 14:43:42
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