Hole punching

JP7730026B2Active Publication Date: 2025-08-27NIPPON STEEL CORPORATION
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Patent Information

Application Number
JP2022040497
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-03-26
Filing Date
2022-03-15
Publication Date
2025-08-27
Estimated Expiration
2042-03-15

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Abstract

To provide a punch which can reliably remove shavings by shaving in piercing work.SOLUTION: A punch (10) comprises a first shank (11), a punching blade (14), a second shank (12), and a shaving blade (15). The first shank (11) is located on a tip side in an axial direction. The punching blade (14) is provided on a peripheral edge of a first end face (111) of the first shank (11). The second shank (12) is connected to the first shank (11) along the axial direction. The shaving blade (15) is provided on a peripheral edge of a second end face (121) of the second shank (12). The punch (10) is divided, by a parting plane extending in the axial direction, into a first punch part (10a), and a second punch part (10b) which can project toward the tip side in the axial direction with respect to the first punch part (10a).SELECTED DRAWING: Figure 1
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Citation Information

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