Large cylinder turning and boring combined processing method and device

Abstract

The invention relates to the field of turning of large-sized parts and discloses a large-sized cylinder turning and boring combined machining method and a large-sized cylinder turning and boring combined machining device. A combined machine tool is set up by large horizontal lathes and a large numerically-controlled machine tool, and large-sized cylinders can be turned through rotational motion of the turning lathe and X-coordinate and Z-coordinate motion of a boring lathe. The large-sized cylinder turning and boring combined machining method and the large-sized cylinder turning and boring combined machining device have the advantages that the turning lathe is combined with the boring lathe to machine the large-sized cylinders, so that high machining precision is achieved; the machining device is simple to assemble without additional civil engineering and occupying the rest space of a factory building, and after machining, the turning lathe and the boring lathe can restore so as not to affect normal machining of other workpieces.

Description

technical field [0001] The invention relates to the field of turning processing of large parts, in particular to a large-scale cylinder turning and boring combined processing method and device. Background technique [0002] The maximum diameter of a large cylinder is usually above φ4500, and its length exceeds 16000mm. Its processing has always been a difficult problem in the machinery manufacturing industry. Taking the cylinder of a large cement mill as an example, the deviation of the coaxiality is required to be less than 0.2mm, and the surface roughness Less than Ra0.8, the outer circle of the flange and the two ends (where the large ring gear is installed) are coaxial and vertical, and the error is less than 0.5mm. The difficulty of processing this type of cylinder lies in that its dimensions and weight usually exceed absolute The processing range of most large-scale lathes, and the purchase of ultra-large lathes that meet the requirements not only requires a large amou...

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Problems solved by technology

Although this method solves the problem of machine tool processing, it is extremely difficult to control the accuracy of assembly welding, and it is also necessary to control the deformation of assembly welding. According to the records in this document, the misalignment of the cylinder product finally obtained in the test is 0.35mm, and the non-perpendicularity is 0.65mm, and the accuracy of the relevant parts of the cylinder can only be controlled to 0.5mm, which cannot meet the processing accuracy required by the above-mentioned large cement mill cylinder.

[0004] The patent document with the publication number CN 1486808A discloses a large-scale mill cylinder on-site turning process and cylinder clamping and adjusting device. The foundation of the car is adjusted by the adjustment device. This method can better ensure the accuracy of the car. However, it requires special civil engineering to make the equipment foundation, which not only takes a long time, but also requires a large indoor space. site

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