Hydrostatic pressure supporting device with rectangular cavity

A static pressure support and rectangular cavity technology, which is applied in the field of rectangular cavity hydrostatic support devices, can solve the problems of low support stiffness and insufficient bearing capacity, and achieve the effects of improved support stiffness, large static pressure, and simple structure

Inactive Publication Date: 2016-02-24
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention focuses on solving the problems of insufficient bearing capacity and low support rigidity under the extreme working condition of high speed and heavy load, and thus proposes a simple structure, reasonable and effective rectangular oil cavity hydrostatic bearing oil pad to solve this problem

Method used

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  • Hydrostatic pressure supporting device with rectangular cavity
  • Hydrostatic pressure supporting device with rectangular cavity
  • Hydrostatic pressure supporting device with rectangular cavity

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Embodiment Construction

[0007] Combined with the accompanying drawings of each specification, a rectangular oil pad 1 of a hydrostatic thrust bearing is mainly the main structure of the oil pad. Its shape is fan-shaped, and the upper end of the oil pad is a rectangular oil chamber 1-1. The oil inlet 1-2 hydraulic oil flows into the oil chamber 1-1 through the oil inlet 1-2. The total thickness of the oil pad is 15mm, and the depth of the oil cavity is 3mm.

[0008] Working principle: 12 identical oil pads 1 are evenly arranged on the base 2 during work, and then the rotary table of the machine tool is installed on the rectangular oil pad. When the oil pump is started, the hydraulic oil is input to the oil through the oil inlet 1-2. Chamber 1-1, when the pressure formed by the hydraulic oil in the oil chamber 1-1 is enough to push the external load, the rotary table will be jacked up, resulting in a thin oil film formed between the oil pad and the surface of the rotary table, and the machine tool will...

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Abstract

The invention discloses a hydrostatic pressure supporting device with a rectangular cavity. When large vertical numerical-control machining equipment is under a high-speed, heavy-load and micro-gap extreme working condition, the shear force of an oil film is increased, the oil film deforms seriously, boundary lubrication or dry friction is formed locally, hydrostatic pressure losses are severe, and thus the situations that the supporting rigidity is reduced, the bearing capacity is insufficient, and the machining precision is low are caused. In order to solve the problems, a hydrostatic pressure supporting oil cavity is designed to be rectangular, the oil pressures of all portions of the bottom surface of the oil cavity are made equal by increasing the area of the oil cavity, so that the bearing capacity is improved, and accordingly deformation of the oil film in the operation process is effectively reduced, the supporting rigidity is improved, and a hydrostatic pressure thrust bearing can operate efficiently.

Description

technical field [0001] The invention relates to a rectangular cavity hydrostatic support device. Background technique [0002] Hydrostatic bearings have become an indispensable part of heavy machinery due to their high bearing capacity, small frictional resistance, high support rigidity, good vibration resistance, and good precision retention. my country has begun to increase research on heavy-duty hydrostatic devices. . However, under high speed and heavy load, the shear force of the oil film increases, resulting in serious deformation of the oil film, local boundary lubrication or dry friction, and serious static pressure loss, resulting in a decrease in support stiffness, insufficient bearing capacity, and low machining accuracy. Businesses have suffered serious economic losses. Contents of the invention [0003] The invention focuses on solving the problems of insufficient bearing capacity and low support rigidity under the extreme working condition of high speed and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/06B23Q1/38
CPCF16C32/064B23Q1/38
Inventor 于晓东吴晓刚隋甲龙耿磊王梓璇郑小军张艳芹杨晓冬
Owner HARBIN UNIV OF SCI & TECH
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