Method and device for machining small-bore pipeline bevels

Abstract

The invention belongs to the technical field of engineering machinery, and in particular relates to a method and a device for machining small-bore pipeline bevels. The method for machining the small-bore pipeline bevels is characterized in that: a magnetic type pipeline cutter is fixed on a base support; and after a small-bore pipeline to be machined is clamped by a pipeline clamp connected with a rotating shaft, the rotating shaft is driven by a magnetic wheel of the magnetic type pipeline cutter to rotate, and simultaneously, a burning torch, arranged on an angle regulating device, of the magnetic type pipeline cutter performs flame cutting to machine the bevels on the small-bore pipeline. The method and the device can machine the bevels of the small-bore pipeline conveniently, and have the advantages of good quality and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a method for flame-cutting a bevel of a pipe, which is particularly suitable for small-diameter pipes, and also relates to a small-diameter pipe bevel processing device for implementing the method. Background technique [0002] Pipe groove processing is a necessary process in pipe welding training. The traditional lathe processing method is not only cumbersome, but also time-consuming and laborious, while flame cutting has a series of advantages such as simple and flexible operation, saving working hours and manpower. However, the "magnetic cutting machine climbing" method used in conventional large-diameter pipe cutting cannot meet the processing needs of small-diameter pipes (φ≤108mm). Therefore, special cutting equipment needs to be designed. [0003] At present, the conventional pipe cutting machines mainly include: hand-operated steel pipe cutting ...

AI Technical Summary

Problems solved by technology

[0004] The manufacturing cost of hand-operated steel pipe cutting machine is low and the price is cheap, but often due to the uneven speed of hand-operated, the cutting is rough, and the walking track is limited by the chain, which often leads to inaccurate positioning, insufficient cutting accuracy, and poor cutting edge. Carry out welding repair or repair cutting

There are gaps between the chain links of the chain-type automatic pipe cutting machine. Using the chain as the track makes it difficult to ensure the cutting accuracy. In addition, because the chain is loose during installation, the installed link is easy to fall off, and the installation is time-consuming and laborious.

The magnetic pipe cutting machine uses magnetic wheels (magnetic trolley) as walking machinery, and the magnetic wheels drive the cutting machine to walk along the pipe wall. When the diameter of the pipe being processed is φ≤108mm, its magnetic force is difficult to overcome its own weight, and the cutting machine is easy to move from the pipe. Therefore, during the cutting process, workers often need to monitor in real time, which wastes man-hours. In addition, when the magnetic cutting machine is placed on the pipe, it is difficult to ensure that the cutting body is parallel to the end face of the pipe, and the walking deviation is inevitable, which affects the processing accuracy.

The positioning block type pipe cutting machine has the advantages of accurate positioning and cutting, but its equipment is heavy, there are many parts, and the installation is time-consuming and laborious. Moreover, this kind of cutting machine is generally imported from abroad, and the maintenance cost is high. The one-time maintenance fee is as high as ten thousand yuan.

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