Question
Download Solution PDFIn a blanking operation, the clearance is provided on
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- Punching or blanking is a process in which the punch removes a portion of material from the larger piece or a strip of sheet metal.
- If the small removed piece is discarded, the operation is called punching, whereas if the small removed piece is the useful part and the rest is scrap, the operation is called blanking.
Blanking operation:
- Die size = blank size
- As the Blank is fixed since the blank here is a useful part. The clearance will be provided on the punch in the blanking operation.
- Punch size = blank size – 2 x clearance.
Piercing/Punching operation:
- Punch size = hole size
- As the Hole size is here is a useful part. The clearance will be provided on the die in the punching operation.
- Die size = blank size + 2 x clearance.
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