Lancing (shearing)

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Lancing is a manufacturing process that is categorized as a shearing, piercing, or stamping operation although, most often, it is a process of die cutting. Lancing cuts an interior section of the sheet metal, producing a tab, without actually removing any material.^[1]^[2]

1 Process
2 Typical Part Geometry/Typical work materials
3 Value to Workpiece Function
4 References

[edit] Process

A common example of lancing is the louver press. This press lances the metal to produce a louver within a piece of sheet metal. It is a common feature of locker doors.^[3]

[edit] Typical Part Geometry/Typical work materials

Lancing is performed primarily on sheet metals. These sheet metals have a wide range of materials and can be lanced is pliable enough.While Lancing the height of bent part must be minimum double the thickness of the blank.

[edit] Value to Workpiece Function

This operation helps to create a pathway for air to pass through the sheet metal without actually removing any part of the sheet metal. It produces a feature in the sheet metal that protrudes out, but doesn’t open it completely. It is common in the production of lockers.^[4] It provides a way for the bad smells and gases to escape the locker without actually having the locker open or compromise it to theft.

[edit] References

1. ToolingU - http://www.toolingu.com/class-400120-punch-and-die-operations.html

2. Kalpakjian, Serope, and Steven R. Schmid. Manufacturing Engineering and Technology. 5th ed. Upper Saddle River: Pearson Education, Inc. Prentice Hall, 2006. 429.

3. ASM Handbook - http://books.google.com/books?id=ekEe4UwqkVUC&pg=PA312&lpg=PA312&dq=Lancing+die&source=web&ots=MVGAkCk_GW&sig=GziCj-KZ5CahDpr6FxN2xMa5kC4&hl=en#PPA312,M1

4. ASM Handbook - http://books.google.com/books?id=ekEe4UwqkVUC&pg=PA312&lpg=PA312&dq=Lancing+die&source=web&ots=MVGAkCk_GW&sig=GziCj-KZ5CahDpr6FxN2xMa5kC4&hl=en#PPA312,M1