Unlock instant, AI-driven research and patent intelligence for your innovation.

Static pressure cone bearing shaft system and precise machine tool

A precision machine tool and static pressure technology, which is applied to metal processing machinery parts, driving devices, metal processing equipment, etc., can solve the problems of high processing accuracy and high processing cost, and achieve the reduction of processing difficulty requirements, reduce processing costs, and improve The effect of concentricity

Inactive Publication Date: 2018-06-12
UNIV OF SHANGHAI FOR SCI & TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there is a certain gap between the concave and convex cone surfaces, the convex cone floats and is in a non-contact state when rotating. However, the machining accuracy of the concave cone surface and the cavity of the cone bearing is high, and the processing cost is high.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Static pressure cone bearing shaft system and precise machine tool
  • Static pressure cone bearing shaft system and precise machine tool
  • Static pressure cone bearing shaft system and precise machine tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the hydrostatic cone bearing shafting 100 includes two hydrostatic cone bearings and a rotating shaft 40 .

[0031] The hydrostatic cone bearing includes a receiving part 10 , a rotating part 20 and a support seat 30 .

[0032] Such as figure 2 As shown, the receiving part 10 includes a receiving part 11 and a plurality of static pressure bushings 12 .

[0033] The receiving part 11 includes a concave tapered surface 111 , an outer surface 112 , a plurality of static pressure passages 113 and a through hole 114 .

[0034] However, in some occasions where the shaft does not need to pass through, the receiving part 11 may not be provided with the through hole 114 . In this embodiment, the receiving part 11 is provided with a through hole 114 for passing the rotating shaft 40 in the horizontal direction at the center of the inner concave tapered surface 111, and the receiving part 11 is made of metal.

[0035] The static pressure channel 113...

Embodiment 2

[0046] Other structures of this embodiment are the same as those of Embodiment 2, except that the shape of the static pressure cavity 121 is any one of circle, ellipse, square, rectangle and trapezoid.

[0047] The shape of the mouth of the static pressure cavity 121 in the second embodiment is oval.

Embodiment 3

[0049] Other structures of this embodiment are the same as those of Embodiment 2, except that the depth of the static pressure cavity 121 is 0.5-5mm, and the total surface area of ​​the static pressure cavity 121 accounts for 40-60% of the total surface area of ​​the concave cone surface.

[0050] In the third embodiment, the concave depth of the static pressure cavity 121 is 2 mm, and the total surface area of ​​the static pressure cavity 121 accounts for 45% of the total surface area of ​​the concave tapered surface 11 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Taperaaaaaaaaaa
Login to View More

Abstract

The invention relates to a static pressure cone bearing shaft system and a precise machine tool. The static pressure cone bearing shaft system comprises at least one static pressure cone bearing and arotary shaft, wherein the static pressure cone bearing is provided with a support seat, an accommodating assembly and a rotating piece; the accommodating assembly comprises an accommodating piece anda plurality of static pressure bushes; the accommodating piece is provided with a plurality of static pressure passages allowing fluid to pass through; the static pressure channels are arranged in the inner walls of the accommodating piece and penetrate through an indent conical surface and an outer surface; the static pressure bushes are arranged at the openings of first concave cavities, and the openings of static pressure concave cavities are towards an indent conical surface; the rotating piece is provided with an external protruding conical surface matched with the indent conical surface; the static pressure bushes are arranged on the indent conical surface along at least one arranged plane; the arranged plane is a plane perpendicular to the rotary axis of the rotating piece; and thesupport seat is provided with a support seat cavity matched with the outer surface of the accommodating piece. According to the static pressure cone bearing shaft system, a protruding cone and the indent conical surface are not contacted when the protruding cone rotates, so that the dynamic rotating precision of a main shaft on a cone bearing can be improved by adopting the gas or liquid static pressure technology.

Description

technical field [0001] The invention belongs to the field of machinery, and in particular relates to a static pressure cone bearing shaft system and a machine tool. Background technique [0002] Most of the revolving pairs in the prior art are in a contact state when rotating, and the rotating precision and efficiency are not high. [0003] Bearings that use gas or hydrostatic technology combined with a cone structure are currently one of the most effective ways to improve the rotation accuracy of the spindle. [0004] According to the basic principle of gas (air) or liquid (oil) static pressure technology, let the liquid or gas medium with a certain pressure enter into the multiple chambers of the concave cone surface of the cone bearing respectively, and the external throttle can Regulates fluid pressure and flow. Because there is a certain gap between the concave and convex cone surfaces, the convex cone floats and is in a non-contact state when rotating. However, the m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B23Q5/04B23Q5/06
CPCB23Q5/043B23Q5/06
Inventor 黎永明王新华黎纯
Owner UNIV OF SHANGHAI FOR SCI & TECH