Multi-degree-of-freedom low-frequency vibration-isolation gasket

Abstract

The invention discloses a multi-degree-of-freedom low-frequency vibration-isolation gasket which comprises a top plate, a bottom plate and an elastic vibration-isolation structure arranged between the top plate and the bottom plate, wherein the elastic vibration-isolation structure comprises a base, a vibration-isolation platform, a vertical spring and forked structures; the vibration-isolation platform and the lower portion of the base are connected through the vertical spring; the vibration-isolation platform and two sides of the base are connected with two forked structures which are arranged symmetrically through forked structure supports; each forked structure comprises long connecting rods, short connecting rods, a bearing and a guiding rod; midpoints of the two long connecting rods are movably hinged; two ends of the long connecting rods are hinged with the short connecting rods movably and respectively; the two short connecting rods are movably hinged through the guiding rod and the bearing, so that a crossed telescoping mechanism is formed; a prestretching spring is connected between positions where two short connecting rods close to the inner side of the base are hinged with the two long connecting rods movably; and guiding rods are connected with the bearings inside the forked structure supports. Compared with the prior art, the gasket achieves the characteristics of three-point supporting and multi-degree-of-freedom vibration isolation and can provide an high-efficiency and excellent processing environment for precision machining.

Description

technical field [0001] The invention relates to a vibration isolator, in particular to a multi-degree-of-freedom low-frequency vibration isolation gasket with three-point support for vibration isolation of high-precision machine tools. Background technique [0002] The function of the vibration isolation gasket is to provide a good vibration isolation environment for the machine tool to ensure that the machining accuracy is not affected by external vibration and noise. The vibration isolation gasket used in the field of machine tool processing needs to meet the vibration isolation requirements of multiple degrees of freedom, bearing capacity and ultra-low resonance frequency. At present, the vibration isolation protection for high-precision machine tools usually uses large-area gaskets. The resonance frequency, resonance peak value and vibration isolation efficiency are the criteria to measure the vibration isolation effect. Design optimization of frequency bands is general...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a multi-degree-of-freedom low-frequency vibration isolation liner for a three-point support machine tool, which aims to solve the high cost of vibration isolation liners for high-precision machine tools and the inability to achieve multi-freedom in the prior art. Defects of effective vibration isolation

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