基于视觉测量的大型型钢折弯机结构设计

Structural Design of Large Section Steel Bending Machine Based on Vision Measurement

针对传统折弯机弯曲型钢时易造成大型型钢局部不可控变形、进料端型钢摆动范围过大不易构建型钢生产线及难以实时检测并控制型钢非线性回弹等问题,设计了一种基于机器视觉的新型型钢折弯机床。该型钢折弯机通过一组顶推和限位装置限定了进料位置,从而保证型钢在折弯机进料端不会摆动;型钢弯曲在折弯机末端进行,且由于型钢在弯曲时只有一侧受力,另一侧自由,应力得到及时释放,很大程度上避免了局部不可控变形,能够折弯更小弯曲半径的型钢。通过在型钢折弯机出料口处设置基于机器视觉的型钢弯曲度检测装置实时获取弯曲后型钢的弯曲度,控制系统根据获得的弯曲度信息实时调节顶推装置,实现对型钢弯曲度的实时矫正,达到一次弯曲即可满足预定弯曲度的要求。

In view of the problems that the traditional bending machine is easy to cause local uncontrollable deformation of large section steel when bending section steel, the swing range of section steel at the feed end is too large, which is difficult to build a section steel production line and detect and control the nonlinear springback of section steel in real time, a new type of section steel bending machine based on machine vision is designed. The section steel bending machine defines the feeding position through a group of pushing and limiting devices, so as to ensure that the section steel will not swing at the feeding end of the bending machine;The bending of section steel is carried out at the end of the bending machine, and because the section steel is only stressed on one side and free on the other side, the stress is released in time, which largely avoids local uncontrollable deformation and can bend the section steel with smaller bending radius. By setting a section steel bending degree detection device based on machine vision at the discharge port of the section steel bending machine, the bending degree of the section steel after bending is obtained in real time, and the control system adjusts the pushing device in real time according to the obtained bending degree information, so as to realize the real-time correction of the section steel bending degree, and the requirements of the predetermined bending degree can be met by one bending.