Linear guide rail copying device for lathing and milling crossbeam and manufacturing method thereof

Abstract

The invention relates to a linear guide rail copying device for lathing and milling a crossbeam and a manufacturing method thereof, wherein the linear guide rail copying device for lathing and milling a crossbeam comprises a crossbeam main body, a linear rolling guide rail and a sliding plate kit, and the maximum speed of the X-axis of a machine tool crossbeam is 16000 mm / min. The linear guide rail copying device for lathing and milling a crossbeam is characterized in that a copying curved surface is manufactured by processing the screwing surfaces and the locating surfaces of two parallel guide rails of the crossbeam main body; the curve of the curved surface is the same as that of the vertical plane of the linear rolling guide rail after the crossbeam is loaded, stressed and deformed, but is in an opposite direction; the linear rolling guide rail and the guide rail surface of the crossbeam main body are fastened into a whole by set screws and impacting blocks on the guide rail surface of the crossbeam main body, and the tight attachment of the linear rolling guide rail and the copying curved surface of the crossbeam guide rails is ensured by increasing the numbers of the screws and the impacting blocks; and the sliding plate kit is screwed on the sliding block of the linear rolling guide rail by screws, and a damping block is arranged between the linear rolling guide rail and the sliding block. The invention has the advantages of increasing the working accuracy of a machine tool, simplifying the design structure of the machine tool, reducing the processing hardness of the machine tool crossbeam and shortening the manufacturing cycle of the machine tool.

Description

technical field [0001] The invention relates to mechanical equipment manufacturing, a beam linear guide rail profiling device and a manufacturing method of a large vertical turning and milling center. Background technique [0002] There are three main structures for beam deformation compensation of vertical turning and milling centers at this stage. The first is to increase the cross-section rigidity of the beam to reduce the deformation of the beam guide rail; the second is to use an unloading beam structure to offset the deformation of the main rail of the beam; the third is to use a beam anti-gravity deformation structure to offset the deformation caused by gravity. Deformation of the beam guide. [0003] There are pros and cons to each of the three structures today. The first type adopts a rigid structure with enlarged cross-beam section. Although the rigidity of the cross-beam section is increased, the external dimension and gravity of the cross-beam are also increase...

AI Technical Summary

Problems solved by technology

The first type adopts a rigid structure with enlarged cross-beam section. Although the rigidity of the cross-beam section is increased, the external dimension and gravity of the cross-beam are also increased. Therefore, this type of structure is more suitable for machine tools with a fixed cross-beam, but for the vertical movement of the cross-beam. The machine tool is not applicable; the second type adopts the unloading beam structure, by using the unloading beam, the deformation of the main rail of the beam caused by the gravity of the skateboard kit can be offset, but the gravity deformation of the beam itself cannot be compensated, so on the one hand, it is necessary to increase the unloading The structure of the beam, on the other hand, still needs to increase the rigidity of the cross-section of the beam appropriately; the third type adopts the anti-gravity deformation structure of the sliding guide rail beam, that is, before processing the main rail surface of the beam, the finite element analysis is carried out through the analysis software, and according to the analyzed According to the data requirements, the profiling curve after the load deformation of the beam guide rail is designed, and the profiling surface is processed in the opposite direction of the beam guide rail surface according to the pre-designed profiling curve. On the contrary, to offset the deformation of the main rail surface of the beam caused by the self-weight of the beam and the gravity of the skateboard kit, this structure not only simplifies the design complexity of the beam structurally, but also does not need to increase the rigidity of the beam for gravity deformation, but this structure Profiling processing is required during processing. Since the sliding guide rail has high requirements on the surface finish of the guide rail, it must be achieved through grinding. However, the current domestic guide rail grinding machine cannot realize the function of CNC profiling processing, and can only rely on the gantry milling machine for fine milling. To realize the function of milling and grinding, so in actual production, only a small number of hydrostatic guide rail beams use this technology, which is not practical

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