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公开(公告)号:US06698324B2
公开(公告)日:2004-03-02
申请号:US09769285
申请日:2001-01-26
IPC分类号: B26D700
CPC分类号: B21D28/34 , Y10T83/222 , Y10T83/8843 , Y10T83/8853 , Y10T83/8878 , Y10T83/9428
摘要: A punch unit (1) is provided with: a punch (2), which is reciprocally driven in a punching operation; and, a die (3), which cooperates with the punch (2) in punching a hole in a soft metal sheet (i.e., workpiece not shown). In this punch unit (1): punch guides (12, 13a) and the die (3) are integrally formed into a punch block (11); and a radial clearance between the punch (2) and the die (3) is set at a value of from 4 to 15% of a thickness of the soft metal sheet to be punched; and, the punch unit (1) is further provided with a sheet hold-down means (5) the sheet hold-down means (5) functioning to hold down the soft metal sheet when the soft metal sheet is punched.
摘要翻译: 冲头单元(1)设有:在冲压操作中往复驱动的冲头(2); 以及在冲压软金属板(即未图示的工件)中的孔时与冲头(2)配合的模具(3)。 在该冲压单元(1)中:冲头引导件(12,13a)和模具(3)一体地形成为冲压块(11); 并且冲头(2)和模具(3)之间的径向间隙被设定为要冲压的软金属板的厚度的4至15%的值; 并且,冲压单元(1)还设置有片材压紧装置(5),当冲压软金属片时,用于按压软金属片的片材压紧装置(5)。
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公开(公告)号:US06622601B2
公开(公告)日:2003-09-23
申请号:US09769284
申请日:2001-01-26
IPC分类号: B26D718
CPC分类号: B21D28/34 , B21D28/24 , Y10T83/2172 , Y10T83/242 , Y10T83/8821 , Y10T83/8843
摘要: A punch unit (1) having a punch (2) that is reciprocally driven in a punching operation; and, a die (3) cooperating with the punch (2) in punching a punch hole in a soft metal sheet. A cleaning means scrapes a soft metal sheet's fragment, when the fragment is stuck to the punch (2), off of the punch (2). The cleaning means scrapes the fragment by reciprocally moving the punch (2) Further provided in the unit (1) is a punch drive and control circuit (25). The circuit (25) enables the punch to be (2) to perform lost motion at predetermined time intervals. Lost motion enables the punch (2) to scrape the fragment of the soft metal sheet off a surface of the punch (2). Consequently, the fragment of the soft metal sheet does not remain stuck to the punch (2) in the punching operation.
摘要翻译: 具有在冲压操作中往复驱动的冲头(2)的冲头单元(1) 以及在冲压软金属片中的冲孔时与冲头(2)配合的模具(3)。 当碎片粘贴到冲头(2)上时,清洁装置刮掉软金属片的碎片,从冲头(2)脱去。 清洁装置通过往复移动冲头(2)来刮除碎片。设置在单元(1)中的是冲头驱动和控制回路(25)。 电路(25)使打孔机能够(2)以预定的时间间隔执行丢失的运动。 丢失的运动使得冲头(2)能够将软金属薄片的碎片从冲头(2)的表面上刮掉。 因此,在冲压操作中,软金属片的碎片不会保持与冲头(2)粘合。
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