Hybrid bearing and main shaft provided with hybrid bearing

A dynamic and static pressure bearing and bearing technology, which is applied to bearings, liquid cushion bearings, shafts and bearings, etc., can solve the problems of inability to meet the production requirements of high-speed spindles and high energy consumption, and achieve high rigidity, large contact area, and low wear. Effect

Active Publication Date: 2016-06-15
钟勇军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the dynamic and static pressure bearings in the prior art cannot meet the production needs of high-speed spindles (rotating axis speed > 75m / s)
And in the process of low speed, there is also the radial force of the oil high pressure area on the rotating shaft, so the load of the motor is relatively large, and the energy consumption is high

Method used

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  • Hybrid bearing and main shaft provided with hybrid bearing
  • Hybrid bearing and main shaft provided with hybrid bearing
  • Hybrid bearing and main shaft provided with hybrid bearing

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] The directions of m, n, o and p marked in the accompanying drawings are only for better understanding of the directions of the embodiments of the patent of the present invention. It should be changed accordingly, so its outlet and inlet must also be reversed, which should be understood by those of ordinary skill in the art, and the outlet or inlet of the ring channel described herein cannot be used as a limitation to the scope of protection of the present invention .

[0039]The present invention provides a dynamic and static pressure bearing, which includes a bearing body 1, at least two oil grooves 2 are formed on the annular inner wall of the bearing body 1 along the radial direction of the bearing body 1, and a circulation channel 3 is provided on the bearing body 1. Both ends of the circulation channel 3 communicate with the corres...

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Abstract

The invention discloses a hybrid bearing. The hybrid bearing comprises a bearing body (1). At least two oil grooves (2) are formed in the annular inner wall of the bearing body (1) in the radial direction of the bearing body (1) in an inwards concave mode. The hybrid bearing is characterized in that the bearing body (1) is provided with circulation channels (3), and the two ends of each circulation channel (3) communicate with two ends corresponding to the oil grooves (2) in the circumferential direction of the bearing body (1) correspondingly. According to the hybrid bearing provided by the invention, the pressure difference of an oil liquid high-pressure area and an oil liquid low-pressure area in an oil cavity can be balanced, accordingly, the purpose of reducing the radial acting force on a rotating shaft is achieved by reducing the pressure of oil liquid in the oil liquid high-pressure area, finally, the rotation speed of the rotating shaft is high, and the load of a driving motor is small.

Description

technical field [0001] The invention relates to the technical field of main shafts, in particular to a dynamic and static pressure bearing and a main shaft equipped with the dynamic and static pressure bearings. Background technique [0002] With the acceleration of the industrialization process, the future manufacturing industry will develop in the direction of high-precision, high-efficiency automation and intelligence. In the process of mechanical manufacturing, with the improvement of product precision requirements, the requirements for machining accuracy and stability of machine tool parts will also become higher and higher, and more and more precision spindles are used in the industry to replace traditional The spindle is used for turning, milling, grinding and other machining. The spindle made of dynamic and static pressure bearings is more energy-saving and environmentally friendly. Due to its high speed, high rigidity, good machining accuracy and long service life,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/06
CPCF16C32/0629
Inventor 钟勇军陈满华
Owner 钟勇军
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