Study On The Ring Rolling Process Of Numerical Ring Rolling Mill And Its Application

The ring rolling process has important influence on quality and cost of the forging ring. To improve quality and induce cost, it must be done to change the old ring rolling process and heighten the automation level of ring rolling mill. This paper, to meet the need of the factory project, does a research on the new ring rolling process, and carries it out.First, this paper makes a summary of all disadvantages that exit on old ring rolling mill in the producing process. According to the theory of ring rolling, this paper does a research on these questions, finds a new ring rolling process, and makes a total scheme to carry it out.Secondly, according to the total scheme, this paper makes a design on the mechanism of the numerical ring rolling mill, and according to the new ring rolling process, does a detailed design for every mechanism. The ring rolling mill mechanism includes active roller mechanism, feed mechanism, support mechanism, hold mechanism and so on.Then, according to original parameters, this paper calculates working load and running speed of hydraulic cylinders, designs the hydraulic circuit that meet the needs, draws the schematic diagram of hydraulic system and the table of the working sequence of electromagnets. After these, this paper calculates working parameters of hydraulic system, and chooses the style of hydraulic cylinders, hydraulic pump, driving motor.Finally, according to the new ring rolling process, this paper designs the automatic control system and writes program codes. It disassembles the whole mission of the automatic control system, chooses the style of PLC controller and other electrical equipments, designs input and output electrical circuit, assembles the hardware, and writes the program codes, designs the desk of the touch screen.Through doing a research on the theory of ring rolling, this paper finds these disadvantages could be avoided by improving the old ring rolling process. Through making a design on mechanism, hydraulic system, and automatic control system, this paper finds this scheme of numerical ring rolling mill is enable to carry out, is not complex, and its cost is acceptable. So, the new ring rolling process is significant and valuable to true production in the factory.