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实际背景造船象做灯笼一样,先要扎个架子,然后再把钢板“糊”上去。做成架子的一根根弯曲梁,叫船的肋骨,是由直架弯成的。以往弯肋骨常采用火工法。近年来提出了一个数控冷弯法(1) 。用不着热钢材,且加工是自动的。其加工机构是一台三撞头弯曲机,它有三个撞头,中间的不动,两侧的由主油缸带动作同步运动。来加工的梁段放在中间撞头和两侧撞头之间,两侧撞头的顶拉使该梁段弯曲。整个加工是逐段进行的。其控制设备是一支承梁的成
The actual background Like a lantern shipbuilding, we must first tie a shelf, and then the plate “paste” up. A root bent beam made of a shelf, called the boat’s ribs, is made of straight-framed. In the past often used fire bending method of bending ribs. In recent years, a CNC cold-formed method (1) has been proposed. No hot steel, and processing is automatic. The processing unit is a three-headed bending machine, which has three head, the middle of the fixed, both sides of the main tank by the action of synchronous movement. Beam segments to be processed are placed between the center striker and the striker on either side, and the top of the striker on either side bends the beam segment. The entire process is carried out paragraph by paragraph. The control equipment is a support beam into