CN114623160A - Hybrid bearing - Google Patents

Hybrid bearing Download PDF

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Publication number
CN114623160A
CN114623160A CN202210317945.0A CN202210317945A CN114623160A CN 114623160 A CN114623160 A CN 114623160A CN 202210317945 A CN202210317945 A CN 202210317945A CN 114623160 A CN114623160 A CN 114623160A
Authority
CN
China
Prior art keywords
bearing
main shaft
wedge
oil
hybrid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210317945.0A
Other languages
Chinese (zh)
Inventor
张恒
胡启龙
张卫军
卫大为
赵博
陈旭东
王丹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Thermal Power Research Institute Co Ltd
Original Assignee
Xian Thermal Power Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian Thermal Power Research Institute Co Ltd filed Critical Xian Thermal Power Research Institute Co Ltd
Priority to CN202210317945.0A priority Critical patent/CN114623160A/en
Publication of CN114623160A publication Critical patent/CN114623160A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators

Abstract

The invention discloses a hybrid bearing, which comprises a main shaft and a bearing arranged corresponding to the main shaft, wherein four wedge-shaped oil cavities are formed between the contact surface of the bearing and the main shaft, the four wedge-shaped oil cavities are communicated with oil return grooves, and each oil return groove is communicated with two oil return holes. The main shaft and the bearing are not easy to contact and wear, and the precision is high, the service life is long, and the rigidity is larger.

Description

Hybrid bearing
Technical Field
The invention belongs to the technical field of bearings, and particularly relates to a hybrid bearing.
Background
The outer cylinder of the landing gear is an important part of an airplane, and the outer cylinder of the landing gear puts high-precision, high-stability and high-reliability use requirements on a main shaft of a machine tool in a machining process. The machine tool is difficult to be influenced by various unpredictable external factors in the machining process, the higher the rigidity of the main shaft is, the better the vibration resistance is, the interference of the external factors in the running process of the machine tool is reduced, and therefore the precision and the stability are higher.
The existing bearing is easy to contact and wear, low in precision and short in service life.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the hybrid bearing, the main shaft and the bearing are not easy to contact and wear, the precision is high, the service life is long, and the rigidity is high.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a hybrid bearing, includes the main shaft and corresponds the bearing that sets up with the main shaft, the bearing with main shaft contact surface between open have four wedge oil pockets 2, four wedge oil pockets 2 all communicate with oil gallery 4, every oil gallery 4 all link up two oil gallery 3.
The wedge-shaped oil cavities 2 are arranged at equal intervals.
The wedge-shaped oil cavity 2 is a circular arc cavity with an angle.
And the wedge-shaped oil cavity 2 is provided with a throttling hole 1.
The invention has the beneficial effects that:
the hybrid bearing provided by the invention is provided with the wedge-shaped oil cavity, so that the main shaft and the bearing are not easy to contact and wear, and the anti-seismic performance is good.
The invention has the characteristics of high precision, large rigidity and good vibration absorption and shock resistance, and the dynamic and static pressure bearing is designed as a precision main shaft support bearing.
Drawings
FIG. 1 is a two-dimensional block diagram of the present invention in axial section.
Fig. 2 is a radial cross-sectional two-dimensional structure view of the present invention.
Fig. 3 is a three-dimensional structural view of the present invention.
In the figure, 1 is an orifice, 2 is a wedge-shaped oil cavity, 3 is an oil return hole, and 4 is an oil return groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-3: the utility model provides a hybrid bearing, includes the main shaft and corresponds the bearing that sets up with the main shaft, the bearing with main shaft contact surface between open have four wedge oil pockets 2, four wedge oil pockets 2 all communicate with oil gallery 4, every oil gallery 4 all link up two oil gallery 3.
The wedge-shaped oil cavities 2 are arranged at equal intervals.
The wedge-shaped oil cavity 2 is a circular arc cavity with an angle.
And the wedge-shaped oil cavity 2 is provided with a throttling hole 1.
The working principle of the invention is as follows:
when the main shaft stops running or the rotating speed is low, the dynamic and static pressure bearing enables pressure difference to be generated between the wedge-shaped oil cavities 2 through the oil supply system, the main shaft is suspended above an oil film and bears external load, the bearing is completely in a full-film lubrication state, dry friction or semi-dry friction is prevented from being generated between a journal and the bearing when the main shaft is started, stopped and runs at a low speed, and bearing abrasion and main shaft torque are reduced. When the bearing is in operation, the bearing generates dynamic pressure due to the oil wedge effect to realize dynamic pressure bearing. When the dynamic pressure of the oil film can not support the bearing load, the main shaft can be supported by adopting the hybrid action of dynamic pressure and static pressure, sufficient pressure is provided for the wedge-shaped oil cavity 2, the combined action of the static pressure effect and the dynamic pressure effect is realized, and the bearing capacity of the sliding bearing is improved.
The part qualification rate and the machine tool reliability are influenced by the service life of the main shaft, the longer the service life of the main shaft is, the smaller the error influence of the part caused by the replacement of the main shaft is, the smaller the part rejection rate caused by the failure of the main shaft is, and the reliability is improved.
In the spindle system of the present invention, the bearing is used as a support system of the spindle, and the performance of the bearing directly affects the output characteristics of the electric spindle, so that the support bearing needs to have the characteristics of high rigidity and long service life for a precise electric spindle.

Claims (4)

1. The utility model provides a hybrid bearing, its characterized in that includes the main shaft and corresponds the bearing that sets up with the main shaft, the bearing with main shaft contact surface between open and have four wedge oil pockets (2), four wedge oil pockets (2) all communicate with oil gallery (4), every oil gallery (4) all link up two oil gallery (3).
2. A hybrid bearing according to claim 1, characterized in that the wedge-shaped oil chambers (2) are equally spaced.
3. A hybrid bearing according to claim 1, characterized in that the wedge-shaped oil chamber (2) is an angled circular arc chamber.
4. A hybrid bearing according to claim 1, characterized in that said wedge-shaped oil chamber (2) is provided with a throttle hole (1).
CN202210317945.0A 2022-03-25 2022-03-25 Hybrid bearing Pending CN114623160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210317945.0A CN114623160A (en) 2022-03-25 2022-03-25 Hybrid bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210317945.0A CN114623160A (en) 2022-03-25 2022-03-25 Hybrid bearing

Publications (1)

Publication Number Publication Date
CN114623160A true CN114623160A (en) 2022-06-14

Family

ID=81904204

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210317945.0A Pending CN114623160A (en) 2022-03-25 2022-03-25 Hybrid bearing

Country Status (1)

Country Link
CN (1) CN114623160A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2765372Y (en) * 2004-12-08 2006-03-15 湖南同心科技有限公司 Dynamic/static pressure bearing electric main shaft
CN201231447Y (en) * 2008-08-05 2009-05-06 孝感伟翔数控机床有限公司 High pressure and high precision energy-saving dynamic-static pressure bearing for numerically controlling crank shaft grinding machine
CN101576121A (en) * 2009-06-17 2009-11-11 重庆大学 Static-dynamic mixed oil film bearing
CN101579841A (en) * 2009-06-17 2009-11-18 重庆大学 Hydro-hybrid bearing used for grinding wheel main shaft of grinding machine
CN201461739U (en) * 2009-06-17 2010-05-12 重庆大学 Dynamic-static hybrid oil film bearing
CN101975225A (en) * 2010-09-29 2011-02-16 山东大学 Static pressure sliding bearing with control oil chambers
CN203887691U (en) * 2014-05-14 2014-10-22 无锡上机数控股份有限公司 Grinding wheel spindle structure
JP2015183826A (en) * 2014-03-26 2015-10-22 大豊工業株式会社 bearing member
CN105240405A (en) * 2015-11-13 2016-01-13 青岛理工大学 Static-pressure sliding bearing with six oil chambers
CN105508426A (en) * 2015-12-29 2016-04-20 上海机床厂有限公司 Oil film rigidity-adjustable fluid dynamic and static pressure slide bearing
CN212928514U (en) * 2020-05-27 2021-04-09 南昌航空大学 Liquid dynamic and static pressure sliding bearing of microminiature gas turbine engine

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2765372Y (en) * 2004-12-08 2006-03-15 湖南同心科技有限公司 Dynamic/static pressure bearing electric main shaft
CN201231447Y (en) * 2008-08-05 2009-05-06 孝感伟翔数控机床有限公司 High pressure and high precision energy-saving dynamic-static pressure bearing for numerically controlling crank shaft grinding machine
CN101576121A (en) * 2009-06-17 2009-11-11 重庆大学 Static-dynamic mixed oil film bearing
CN101579841A (en) * 2009-06-17 2009-11-18 重庆大学 Hydro-hybrid bearing used for grinding wheel main shaft of grinding machine
CN201461739U (en) * 2009-06-17 2010-05-12 重庆大学 Dynamic-static hybrid oil film bearing
CN101975225A (en) * 2010-09-29 2011-02-16 山东大学 Static pressure sliding bearing with control oil chambers
JP2015183826A (en) * 2014-03-26 2015-10-22 大豊工業株式会社 bearing member
CN203887691U (en) * 2014-05-14 2014-10-22 无锡上机数控股份有限公司 Grinding wheel spindle structure
CN105240405A (en) * 2015-11-13 2016-01-13 青岛理工大学 Static-pressure sliding bearing with six oil chambers
CN105508426A (en) * 2015-12-29 2016-04-20 上海机床厂有限公司 Oil film rigidity-adjustable fluid dynamic and static pressure slide bearing
CN212928514U (en) * 2020-05-27 2021-04-09 南昌航空大学 Liquid dynamic and static pressure sliding bearing of microminiature gas turbine engine

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