Apparatus for machining, particularly for cutting a tubular or round section body

Abstract

An apparatus (100) for machining a tubular or round-bar type piece, wherein the apparatus comprises a frame element (102), a machining unit (104), as well as a threaded shaft (110), which is fitted to the frame element in a rotatable and axially immobile fashion and has a first section 110a) provided with a right-handed thread and a second section (110b) with a left-handed thread. The first section is provided with at least one first support element (106a) and the second section is provided with at least one second support element (106b), the mutual distance between the support elements being adjustable in response to rotating the threaded shaft, such that the support elements, for example wheels, are adapted to touch a workpiece and to support and guide the apparatus (100) in the process of machining the piece. At least one of the support elements, such as wheels (106a, 106b), is adapted to be capable of rotating relative to its axis in response to moving the apparatus along the surface of a workpiece.

Description

technical field [0001] The invention relates to a device for machining (in particular for cutting, but also scoring and / or bevelling) tubular or round rod type parts. Background technique [0002] Various tools are known from the prior art for machining (for example for cutting or milling) tubular or round bar type parts, or beveling the part at its end. One example tool of the prior art is an angle grinder, which includes a rotating disc for cutting parts. The rotary disc can also be used to bevel the ends of parts. [0003] However, the problem with these tools is, for example, how to produce a straight cutting result across the entire pipe, i.e. how to make the end point exactly coincide with the start point as the cutting tool advances along the pipe surface, without the operator having to perform any corrective actions, e.g. very close to the end (thus creating a bend in the cut line). Another problem with the existing known devices is that there are no supports, mak...

AI Technical Summary

Problems solved by technology

This necessarily requires that the frame of the clamping mechanism must have a length slightly in excess of 1000mm when machining a part of, say, 1000mm diameter, so that the device becomes rather bulky and heavy, thus difficult to handle and often dangerous because the device does not Again suitable for stable manual operation

In fact, there are already options in the prior art to use multiple sizes of equipment for parts of different diameters, which is of course expensive since it requires at least two or three different sizes of equipment parts

[0006] On the other hand, when machining thin-walled parts, such as thin-walled spiral welded pipes, the clamping mechanism tightened around the part may compress the part, changing its shape, thus making it difficult to produce straight cut results , or even impossible

[0007] Furthermore, adjusting the machining or cutting depth to an optimum is a difficult operation in prior art equipment

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