System Research And Design Of Numerical Control Cold-rolled Ribbed Bars Straightening And Cutting Machine

ABSTRACT This dissertation comprehensively and systematically investgates straightening technology of cold-rolled ribbed bars, straightening theory of bars, the straightening machines basis type, configuration, parameter and the method of choosing bars straightening machines type. Overall design scheme of GTK6/12 numerical control cold-rolled ribbed bars straightening and cutting machine is confirmed. Utilizing the basis theory of material mechanics, elastic-plastic mechanics and regarding a bar as a continuous bending beam in the process of straightening, bend transform of cold ribbed bars is explained elaborately. Straightening theory of cold-rolled ribbed bars is farther depicted and on the basis of this theory, confirming method of straightening system parameter is researched. The new roller type configuration theme is put forward and straightening system mechanical parameter and straightening power of this new theme is calculated. An inspection device is presented. On the basis of former cutting mechanism, a new-type cutting mechanism is designed. Pneumatic system is introduced in the paper and pneumatic clamp is designed and made. Numerical control technique is imported in straightening cutting machine creatively. PLC is applied in GTK6/12 numerical control cold-rolled ribbed bars straightening cutting machine and automatic length-fixing and cutting can be realized. Bars diameter, machining quantity, weight calculation, display failure, material waiting and automatic failure shutdown can be set up and automatic level is high. On the basis of theory analysis and design calculation, a prototype is made. It combines machine, electron and pneumatic and expecting effect is achieved. It provides good foundation for the design and development of later numerical control straightening cutting machine. GTK6/12 numerical control cold-rolled ribbed bars straightening and cutting machine has passed the new product authentication of HeBei province. The product is first made in China and it fills up the domestic blank. The design and development of (ITK6/12 numerical control cold-rolled ribbed bars straightening and cutting machine has excellent market prospect.