Combined guide rail having height difference and used for mechanical sliding table

Abstract

The invention discloses a combined guide rail having height difference and used for a mechanical sliding table. The combined guide rail has the advantages that the initial inner stress of a Y-direction sliding table is increased by a horizontally-disposed lathe bed, a Y-direction linear guide rail with front-back height difference, and the height difference of the front and the back guide rails of the Y-direction linear guide rail, the initial inner stress is balanced with the tensile stress generated by a load loaded on the sliding table, the size stability and dynamic rigidness of the Y-direction sliding table are increased, and accordingly high precision and high rigidity of a machine tool are achieved, and operation stability of the machine tool is greatly improved.

Description

technical field [0001] The invention relates to machine tool equipment, in particular to an unequal-height combined guide rail for a mechanical sliding table. Background technique [0002] With the rapid development of industries such as automobiles, national defense, aviation, and aerospace, and the application of new materials such as aluminum alloys, the requirements for processing machine tools are getting higher and higher. Take the typical parts such as turbine casing and fan casing in the aviation industry as an example. The technology of this kind of parts requires turning, milling, radial drilling and boring at the same time, and most of them are thin-walled parts and high-hardness materials. The precision requirements are also very high. Therefore, not only the machining accuracy retention of the machine tool, but also the dynamic rigidity of the machine tool should be considered when selecting the machine tool. If a machine tool can integrate these performances,...

AI Technical Summary

Problems solved by technology

[0004] The movement direction of the tool in the composite vertical machining center is mostly in the direction of the Cartesian coordinate system. The movement in the direction of the Cartesian coordinate system in the composite vertical machining center is generally completed through the cooperation of multiple mechanical slides, which requires a translation slide table (Y-direction slide), a transverse slide (X-direction slide) and a longitudinal slide (Z-direction ram), the electric spindle of the composite vertical machining center is assembled on the longitudinal slide (Z-direction ram), that is, the tool is assembled on the longitudinally moving slide (Z-direction ram), so that when the tool needs to process the workpiece longitudinally, the longitudinally moving slide (Z-direction ram) moves downward, thereby changing the entire slide The center of gravity of the table group, along with the longitudinal movement of the sliding table (Z-direction ram), moves the center of gravity of the sliding table group forward, so that the force of the sliding table group will change, and some components will be deformed, which will lead to electric shock. The central axis of the spindle and the initial position are perpendicular to the central axis of the workpiece to form an angle, and machining errors will occur, which greatly affects the machining accuracy of the workpiece, which is very unfavorable for large-scale machining

[0005] If the above requirements are met, it is necessary to use very high-rigidity materials for each component of the slider group in the existing process or change the layout of the ribs to meet the internal stress between the slider groups enough to offset the tension generated by the center forward tilt , the machine tool cost will be very high

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