Metal deforming – By use of non-deforming work-gripping clamp and relatively... – With cutting
Patent
1999-05-25
2000-12-12
Crane, Daniel C.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
With cutting
72307, B21D 2800
Patent
active
061582646
ABSTRACT:
The present invention relates to a method of working a band blade that is a so-called Thomson blade. In the invention, a band blade 1 is bent into a predetermined shape by a bending mechanism 7, the bent band blade is then forward fed, and a rear portion of a bent region Z of the band blade 1 is cut away by using a front band-blade cutting tool 2 which is placed in front of the bending mechanism 7. In the invention, in advance of bending of the band blade 1, a step of cutting the front end of the band blade 1 by using a rear band-blade cutting tool 2 which is placed in rear of the front band-blade cutting tool 2 may be conducted. After the front end of the band blade 1 is cut by using the rear band-blade cutting tool 2, the band blade 1 is forward fed, a bridge 14 is formed in the band blade 1 by using a bridge punching mechanism 8, and the band blade 1 is then forward fed to be bent into a predetermined shape by the bending mechanism 7. According to the invention, without previously cutting the band blade 1 so as to have a predetermined short length, the band blade 1 can be bent while maintaining its long length.
REFERENCES:
patent: 1807847 (1931-06-01), Kellogg
patent: 5456099 (1995-10-01), Lipari
patent: 5461893 (1995-10-01), Tyler
patent: 5463890 (1995-11-01), Tachibana
patent: 5771725 (1998-06-01), Mizukawa
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