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Ch13-H8070.fm Page 133 Wednesday, October 18, 2006 6:56 AM
Plate and Section Preparation and Machining 133
Chalk line
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Inverse curve bending principle
งานห้องสมุด ศูนย์ฝกพาณิชย์นาวี
Pin
Dog
Dog Pin
Portable hydraulic
Frame
Pin ram
Dog
Portable hydraulic ึ
Pin ram
Dog Pin
Dog Frame
Slabs
TRADITIONAL HEATED FRAME BENDING
Rotating vicing
jaw
Motor driven feed
wheels
Fixed
vicing
jaw
Rotating vicing
jaw
BOW FLARE BEND INITIAL POSITION BILGE TURN BEND
COLD FRAME BENDING MACHINE (HYDRAULIC)
FIGURE 13.4 Frame bending
