A three-dimensional damping hinge seat for vibration reduction of parallel machine tools

Abstract

The invention discloses a three-dimensional damping hinge seat for vibration reduction of a parallel machine tool, which comprises an upper cylinder cover, a damping liquid bag, a rigid perforated plate, a support plate, a lower cylinder cover, and a hinge sleeve; the upper and lower cylinder covers are respectively connected with the upper and lower ends of the hinge sleeve Fixed connection; the damping liquid bag, rigid perforated plate, and support plate are sequentially arranged in the cavity between the upper and lower cylinder heads from the inside to the outside; the support plate is fixedly connected with the upper and lower cylinder heads; The plate is fixedly connected; the damping liquid bladder is attached to the hinge sleeve; multiple damping liquid bladders are arranged around the hinge sleeve, and the adjacent damping liquid bladders are connected by capillary oil pipes; there is an oil storage space between the rigid perforated plate and the upper cylinder head. The liquid in the upper and lower oil storage cavities is connected through a rigid porous plate; there is a second sealing ring between the hinge sleeve and the damping liquid bag; the upper and lower cylinder heads are arranged symmetrically with respect to the hinge sleeve; both the upper and lower cylinder heads are tooth-shaped; the number of teeth is 2n, n≥2; the support plate is provided with a plurality of slots corresponding to the teeth. The invention can realize multi-dimensional vibration reduction.

Description

technical field [0001] The invention relates to the field of damping and vibration reduction, in particular to a three-dimensional damping hinge seat used for vibration reduction of a parallel machine tool. Background technique [0002] Viscous dampers are widely used in machinery, vehicles, aerospace and military engineering as an excellent energy-dissipating and vibration-absorbing structural component. The common viscous damper is a hydraulic cylinder type, which is mainly composed of a piston head, a piston rod, a cylinder body and a seal. The damping chamber inside the oil cylinder is divided into two damping chambers. The damping chamber is filled with viscous liquid with high viscosity. When the piston moves relative to the oil cylinder, the liquid sealed in the damping chamber on the pressure side is squeezed, and the pressure It rises and flows from the gap or small hole between the piston head and the cylinder to another damping chamber. The pressure difference be...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN101956780A discloses a viscous damper. This mechanism vulcanizes the elastic body at both ends of the cylinder body, the cylinder body and the piston rod into one, which improves the initial stiffness of the mechanism, but still cannot meet the stiffness requirements of parallel machine tools, and cannot Realize multi-dimensional vibration reduction; Chinese patent CN104154170A discloses a multi-dimensional vibration reduction platform in parallel configuration, which is a vibration reduction device composed of multiple piston dampers in parallel, which can achieve multi-dimensional vibration reduction, and the stiffness and damping can be adjusted. For vibration isolation of important instruments and equipment

However, its large range of motion cannot meet the rigidity requirements of parallel machine tools and the requirements for suppressing high-frequency micro-vibration

Images