A Synchronous Spinning Control Method for Large Spinning Machine Tools

Abstract

The invention provides a synchronous spinning control method for a large spinning machine tool, and relates to the technical field of spinning machine tool control methods. The synchronous spinning control method for the large spinning machine tool is characterized in that rotary encoders are arranged on a spindle mandrel and spinning wheels of the large spinning machine tool, the rotation speed of the spinning wheels is derived according to the minimum diameter of a spindle mandrel machining part and the diameter of the spinning wheels, and finally real-time synchronous rotation speed controlis achieved in the machining process. According to the synchronous spinning control method for the large spinning machine tool, the problems that the part surfaces are scratched and the spinning wheels are damaged due to the fact that the inertia of the spindle mandrel of the large spinning machine tool is large, the spinning wheels make contact with the workpiece surface, and starting is slow are solved, the durability of the spinning wheels of the large spinning machine tool is significantly improved, and the service life of the spinning wheels is prolonged; and synchronous control is achieved, spinning wheel stopping control is achieved through external pressure feedback, and the problems that the part surfaces are scratched and the spinning wheels are damaged are effectively solved.

Description

technical field [0001] The invention relates to the technical field of control methods for spinning machine tools, in particular to a method for synchronous spinning control of large spinning machine tools. Background technique [0002] In the existing technology, breakthroughs have been made in the manufacturing technology of CNC spinning forming equipment. Some CNC spinning forming equipment manufacturers and research institutes have developed new CNC powerful spinning machine tools, whose precision and performance are close to or reach the advanced level. However, there is still a big gap compared with the international advanced level in the design and manufacture of high-end large-scale CNC powerful spinning machine tool equipment and engineering application technology, and it is far from meeting the urgent needs of national economic development and national defense development. The small spinning machine tools in the prior art (the processing diameter is mostly below 6...

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Problems solved by technology

[0004] 1. The existing spinning wheel control method adopts the setting of the pre-rotation value of the spinning wheel. After the speed of the spinning wheel reaches the pre-rotation value, the maximum friction force F of the spinning wheel acting on the surface of the workpiece is used to make the spinning wheel The pressure roller rotates accordingly, so that for workpieces with a diameter greater than 800mm, it will affect the surface finish of the workpiece

[0005] 2. The existing spinning wheel control method is only suitable for small spinning machines with a processing diameter of less than 650 mm, and it is applied to large CNC powerful spinning machine tools with a processing diameter of more than 800 mm. Due to the large inertia of the spindle mandrel, It will cause the rotary wheel to contact the surface of the workpiece to start slowly, resulting in scratches on the surface of the part and the problem that the rotary wheel is easily damaged

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