R & D IN SALT LAKE CITY, UTAH
MOTORIZED 3-ROLLS WING EDGE BENDING MACHINE
For the aviation industry fastest, easiest and precise bendings are only can be made by 3 rolls wing edge bending machines. This machine bend the aluminium or titanium alloyed sheets by many points for bending to get precise cylindrical or conical bending forms. Aluminium or titanium alloyed plates spring back is too much and these kind of sheets thicknesses are thin, yield strength is high and elastic module is low. For this reason these plates can only bend by RMT ABM series machines.
3-ROLLS FUSELAGE PANELS AND WING EDGE BENDING MACHINE
AUTOMATIC TANK BENDING ROLL
FUEL TANKERS BENDING ROLL
ROCKET FUEL TANK BENDING ROLL
TWO DIRECTIONAL BENDING ROLL
WIND TOWER BENDING ROLL
THICK WALLED CYLINDER ROLLING MACHINE
On plate roll bending machines specially during pre-bending operation forces on the top roll increases. For that case roll deflection increases and there will be flat parts on the edges, to avoid that problem generally top roll diameter has to be increased. But for cases which bending diameter is smaller than top roll diameter is necessary to bend with hot bending method. This is not very preferable or impossible. Our newly developed top roll support system on RMT R&D department eliminate this problems. During pre bending operation this bridge moves down position to support to top roll and decrease the deflection. While bending process bridge can go up to provide bending diameter.
ISOGRID & ORTHOGRID FORMING MACHINE
High strength and light weight structures are key factors of the Aviation & Space Industry. This structures are fabricated from aluminum alloys and titanium to provide desired strength, rigidity, etc. and called Isogrid or Orthogrid panels. This panels usually manufactured in CNC milling machines by, triangular or rectangular pattern pockets machining of a single piece of aluminum alloy stock. While the bottom part is creating the shell (or skin), the ribs, which are between pockets and generally vertical to shell, are to give rigidity to structures.
Machining to pockets, make the panels high strength with low weight. This panels commonly use in Aviation & Space Industry such as aircraft fuselage, spacecraft, launch vehicles and satellites… Although structural advantageous of Isogrid and Orthogrid panels, to form this panels after the machining is too much time consuming and difficult processes. Usually this panels formed in press brakes with desired radius form by multistep bumping method. A panel, which has 142” width, 225” length, 1.4” total thickness, needs more than 500 steps of bumping. However, generally this asymmetrical panels take forms undesired. Then this deformations are tried to fix by bumping operations into pockets. All these operations completed in 4 to 8 days, so it becomes, one of the biggest problems of isogrid manufacturers. RMT R&D engineers are working on a special machine and automation system, which provides a new bending method, to solve this problem. In summary; sensitivity, repeatability of press brake bending and continuous forming of a plate roll bending technologies, combined on this machine. Through dynamic crowning system, which is placed along the bending length, material could be formed by desired pressure at every point. And also, possible over bending can be fixed easily through reverse bending feature.