Turning mechanism-based groove cutting device

Abstract

The invention discloses a turning mechanism-based groove cutting device. The device comprises a cutting torch holder, a turning mechanism, a swinging mechanism and a Z-axial movement mechanism, wherein the swinging mechanism is arranged in the turning mechanism through a bearing; the connecting shaft of the turning mechanism and the cutting torch holder is a hollow shaft; working pipelines of a cutting torch pass through the hollow shaft concentratively; and the turning shaft of the turning mechanism and the swinging shaft of the swinging mechanism are both directly connected to a servo motorthrough a speed reducer. The turning shaft of the turning mechanism of the invention is hollow and the swinging mechanism is arranged therein, which makes the structure more compact and concise and saves space; and simultaneously, all of the working pipelines of the cutting torch pass through the hollow turning shaft so as to solve the problem of the winding of the working pipelines and realize unlimited turning curve groove cutting. Because the turning shaft of the turning mechanism and the swinging shaft of the swinging mechanism of the invention are both connected with each other through the speed reducer directly and are driven by a motor, the error and the energy loss of an intermediate link in power transmission are reduced.

Description

technical field [0001] The invention relates to a novel bevel cutting device, in particular to a bevel cutting device based on a rotary mechanism. Background technique [0002] The two processes of welding and cutting are two key manufacturing technologies in industries such as shipbuilding, bridges, boiler pressure vessels and metal structures. According to design or process requirements, the groove that processes the part of the weldment to be welded into a certain geometric shape is called a groove. As a pre-welding process, bevel cutting directly affects the process performance and welding quality of welded parts. Choosing a reasonable bevel shape, developing a new and efficient bevel cutting technology, improving the bevel cutting quality, and ensuring the bevel angle and bevel surface accuracy are the keys to the current bevel cutting technology. One of the core technologies of CNC plasma beveling machine cutting is the rotary device, which can lead the cutting torch...

AI Technical Summary

Problems solved by technology

Among them, the advantages of the parallel four-bar mechanism are: simple structure, easy design and layout of parts, but there are disadvantages of poor rigidity and many nodes increase motion transmission error. To solve these problems, it is necessary to increase the number of connecting rods to ensure rigidity , but this will greatly increase the difficulty of parts processing and assembly; although the overall structure of the guide rail slider mechanism is simple and the movement is relatively stable, the whole mechanism occupies a large space and its own weight is too large, and the accuracy of the arc-shaped track is not easy to guarantee; The spatial three-dimensional rotary mechanism is not only compact in structure, but also the rotary motion of the cutting torch around the X-axis and Y-axis is directly driven by the motor, which reduces the error of motion transmission between components, but the existing rotary mechanism mainly includes rotary shaft and swing components, and the rotary shaft is a solid shaft, and the swinging parts are installed with bearings in the additional holes and fixed on the rotary shaft, while the swinging parts have a huge structure due to the installation of motors, etc., and the pipelines of the cutting torch are exposed outside. Tubing can become tangled when mechanism rotates

Images