Cutting – Processes – Cutting wall of hollow work
Patent
1998-04-10
1999-10-19
Peterson, Kenneth E.
Cutting
Processes
Cutting wall of hollow work
83188, 83192, 83946, B26D 109
Patent
active
059670100
ABSTRACT:
A process for cutting hollow molded plastic parts uses two knife cuttings in sequence. A first knife blade (42) is pressed on an uncut hollow molded plastic part for cutting therethrough with a guillotine blade action to form an access hole (46, 48) in the plastic part (10). The plastic part (10) may be secured onto a clamp (34, 36) for the first guillotine blade action. An outer support clamp (50, 52) is then secured about the plastic part with an outer side of the support clamp being positioned in proximity to the finished cut edge (65) of a finished plastic part. A mandrel (54) is inserted into the access hole (46, 48) of the part. The inner end of the mandrel is axially spaced from the outer side of the support clamp to allow a thin knife blade therebetween. A thin knife blade (62, 64) then cuts off the rough edge (47) to provide a finished cut edge (65) in the plastic part axially interposed between the outer side of the support clamp and the inner mandrel.
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Bae Gyounghyun
Cambridge Industries, Inc.
Peterson Kenneth E.
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