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05-08-2011 #1
ATTENTION PRESS BRAKE OPERATORS - Please read my REQUEST FOR QUOTE!
I have drawn up a few diagrams showing the appropriate way I believe to produce small-corrugations, "wave profile" panels using a press brake from steel sheet of thickness 0.9 mm, which would I think give a wavelength of about 7.6 mm and an amplitude of about 3.6 mm.
To make this profile using a press brake, a standard #12306 Amada 6 mm V-die or equivalent needs first to be custom ground to suit.
The next diagram shows the position of the sheet after two bends have been made and before the 3rd bend is made -
The above diagram assumes a CNC backgauge stop is being used because I have left a 0.2 mm or thereabouts gap between the vertical side of the sheet and the die.
The next diagram shows the position of the sheet after the top tool (not drawn) has been pressed down onto the sheet to make the third bend.
One slight variation on these drawings is simply to use the side of the die as a stop (no CNC back-gauge required) which presumably would produce a 0.2 mm shorter bend separation width than as shown.
Using the die as a stop might mean a wavelength dimension of about 7.4 to 7.5 mm and an amplitude of 3.4 to 3.5 mm.
REQUEST FOR QUOTE
So whether using a CNC back-gauge stop or the die as a stop, will anyone, especially in the UK but I'll consider quotes from elsewhere, with a press brake please now step forward and quote to make 12 panels by bending 12 sheets of stainless steel, grade 316, 0.9 mm thick, sheet size 2 m x 0.5 m, which involves making about 101 bends (using the CNC backgauge stop method and a bend separation width of about 4.95mm) to 105 bends (using the die stop method and a bend separation width of about 4.75 mm) per sheet, to this profile? The bends would be along the longer length of the sheet - 2m long bends in a 2 m x 0.5 m sheet.
Either that or quote me for what you and your press brake could make something like this plan please.
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