Method of for cutting un-orthogonal crossed big connecting pipe hole by the digital controlled fire on the thick cylinder

Abstract

The invention relates to a method for cutting non-rectangular intersection pore on thick-wall cylinder by NC flame, characterized in that the process method that oxyacetylene air cutting is combined with the path run by NC boring-milling machine is adopted; and cutting torch and auxiliary tooling are used to achieve the purpose of opening pore. The method is that through the program of NC boring-milling machine according to the dimension demand of opening pore the math model is built; the 3-D path for opening pore on the surface of cylinder is found; the NC program known by machine is programmed; marking in advance can be carried out on the surface of cylinder so as to validate the validity of program; cutting test is carried out on waste material to test cutting width and depth of gas cutter knife; radius compensation and cutting speed can be considered; inputting parameters of cutting program is amended; formal gas cutting processing is carried out. The merit of invention is that it can machine irregular space path; it can form in one gas cutting so as to avoid uncertain thermal deformation generated by cutting in many times; labor source can be saved greatly; and the working efficiency can be improved greatly.

Description

technical field [0001] The invention relates to a method for cutting non-right-angle intersecting large connecting pipe holes with numerical control flame on a thick-walled cylinder, which can be used for welding in a gasification furnace and belongs to the field of welding technology. Background technique [0002] General barrel opening can be done by drilling, boring, drawing and other machining or gas cutting methods. At present, the existing hole opening machines can only process holes perpendicular to the axis of the barrel on medium and small barrels. It is also difficult to process irregular spatial trajectories on large cylinders. For the cutting of large irregular openings, the method of multiple small block cutting and grinding is often used. Manual block cutting is not only difficult to guarantee the accuracy, but also requires a lot of time. A lot of manpower and material resources. Contents of the invention [0003] The purpose of the present invention is to ...

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Problems solved by technology

[0002] General barrel opening can be done by drilling, boring, drawing and other machining or gas cutting methods. At present, the existing hole opening machines can only process holes perpendicular to the axis of the barrel on medium and small barrels, while the general machine It is also difficult to process irregular spatial trajectories on large cylinders. For the cutting of large irregular openings, the method of multiple small block cutting and grinding is often used. Manual block cutting is not only difficult to guarantee the accuracy, but also requires a lot of time. A lot of manpower and material resources

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