Z8f Type Beam With Laying Machines, The Overall Concept Design

Automatic placement is a quickly developed molding technology of composites, which has advantages of low-cost and high-quality. It is mainly used to manufacture special component in the industry of aeronautics and astronautic, for example, the blade crossbeam and aerofoil. But the research of this technology is just at the beginning in china, it is very necessary to develop placement device with own intellectual property.According to the molding requirement of Z8F helicopter blade crossbeam, this paper has done some research about system structure and control system of crossbeam tape placement machine. The following task has been done:First, the idea of placed layer by layer is introduced, and the design of the system structure of placement machine is studied. The placement machine is a special device to achieve the aim of placement. This paper uses the conception of integrative design, combines the necessary equipments of placement machine as placement head, which includes tap discharge equipment, film remove equipment, tension control equipment, compaction equipment and cutting equipment. In this way, by controls placement head moves in given track can achieve placement intent. The idea of placement layout is introduced; the moving track of the roller center of placement head is analyzed.Second, the control system of placement machine is studied. Advanced CNC system is used as contol center so as to realize automation. The core of control is makes placement head moves accurately along setted track. 840D is used to realize the track control of placement head. The switch signal control of assistant equipment is realized by 840D's interior PLC. In the driving design for placement head, three-loop control of position-loop, speed-loop and current-loop is used to achieve adjustment for position, speed and current of servo-motor, so as to realize the accurate orientation for placement head.At last, the mathematic model of tension is studied. The closed-looped control system of tension which is made up of tension controller, magnetic power brake, tension transducer is designed.