Precision control method for spinning machine

Abstract

The invention discloses a precision control method for a spinning machine, which is controlled by two modes. One is that clearance deviation values of different positions are obtained by calculating through mathematical analysis; compensation is carried out through a horizontal ram position of a rotating wheel, and a clearance error is eliminated. The other one is that the clearance between the rotating wheel and a main shaft is dynamically adjusted by regularly monitoring the pressure of a horizontal ram hydraulic cylinder of the rotating wheel, and each rotating wheel is ensured to be stressed basically in balance, thereby meeting the stable processing requirement of a machine tool and reducing the negative impact of the equipment on the long part spinning process of the large spinning machine tool due to a component machining error, assembly and installation errors, and the like; at the same time, the control system can realize adaptive control, reduce equipment unbalance loading ofthe spinning process, avoid equipment vibration from generating, ensure the stability of the spinning process and ensure the spinning precision.

Description

technical field [0001] The invention relates to an industrial control method, in particular to a precision control method of a spinning machine. Background technique [0002] Large-scale CNC powerful three-wheel spinning machine tool has three vertical columns evenly distributed, the center of which is a vertical spindle mandrel, the parts are set on the mandrel, each column is equipped with a laterally moving ram, and the rotary wheel is fixed in the horizontal direction. Move the front end of the ram, and each rotary wheel moves to the position of contacting the part through the ram, which can realize the synchronous spinning or staggered spinning of the three rotary wheels, and the positive rotation of the part can be realized by moving the three rotary wheels up and down or anti-spin. [0003] In the three-wheel spinning process, the numerical control system determines the amount of spinning by controlling the gap between each wheel and the mandrel. Each spinning part, ...

AI Technical Summary

Problems solved by technology

However, the position accuracy of each roller shaft is guaranteed only by the system’s compensation for the position accuracy of each roller shaft, but it ignores that the roller shaft is installed on the column, and the column itself will have manufacturing and installation accuracy errors, and the mandrel will cause eccentricity during the rotation process. The gap between the rotary wheel and the mandrel caused by the combined action of many factors such as errors will have a variety of actual effects as the rotary wheel shaft moves up and down on the column, which will affect the stability of the equipment in the actual spinning process. with unknowable consequences

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