This article focuses on the curved tube machine. A variety of the curved tube machine, there is curved tube machine of CNC control, and there is curved tube machine of PLC control, there also is the simple type automatic curved tube machine, but this article is just to the design of the automatic curvede machine and its control electric circuit, and the device of the curved tube machine can construct with the fuselage of machine, motor , the decreaseing-speed organization, block organization, and electric appliances control organization etc.
Key words:motor curved tube machine ;electric appliances control; bent radius