WO2006075741A1 - 転がり軸受装置および回転装置 - Google Patents
転がり軸受装置および回転装置 Download PDFInfo
- Publication number
- WO2006075741A1 WO2006075741A1 PCT/JP2006/300450 JP2006300450W WO2006075741A1 WO 2006075741 A1 WO2006075741 A1 WO 2006075741A1 JP 2006300450 W JP2006300450 W JP 2006300450W WO 2006075741 A1 WO2006075741 A1 WO 2006075741A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pump
- rolling bearing
- lubricating oil
- bearing device
- rolling
- Prior art date
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Classifications
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- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
- F16C33/6674—Details of supply of the liquid to the bearing, e.g. passages or nozzles related to the amount supplied, e.g. gaps to restrict flow of the liquid
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- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
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- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
- F16C33/3843—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
- F16C33/3856—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/664—Retaining the liquid in or near the bearing
- F16C33/6651—Retaining the liquid in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
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- 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
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
-
- 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
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
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- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
- F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
-
- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
Definitions
- the present invention relates to a rolling bearing device having a self-lubricating function, a rolling bearing device suitable for a working machine that rotates at a relatively high speed, and a rotating device including the rolling bearing device.
- rolling bearings such as an anguilla ball bearing are used to support shafts that rotate at a relatively high speed, such as various spindles used in machine tools and the like.
- a lubrication method for such a rolling bearing that supports a high-speed rotating shaft mainly an oil-air lubrication method has been widely used.
- the oil-air lubrication method is a method in which a minute amount of lubricating oil supplied intermittently is blown toward a rolling bearing by compressed air through a pipe, and the air formed around the rolling bearing rotating at high speed. Compressed air is used as a carrier, so to speak, to feed the lubricant to the bearings through the curtain.
- a tank and a pump for storing lubricating oil are mounted on the fixed wheel side, and the pump extends to the vicinity of the rolling element that rolls between the inner and outer rings.
- Nozzle is attached, and a very small amount of lubricating oil of, for example, several tens of nl (tens of cc / cc) is dropped toward the rolling elements.
- the lubricating oil is supplied to the inside of the air curtain that is generated when the rolling bearing rotates. This eliminates the need for compressed air as a carrier and eliminates the problem of noise, and eliminates the need for compressors, oil-air lubricators, and external and internal piping, which is advantageous in terms of cost.
- the inner ring 61, the outer ring 62, the rolling elements 63, and the cage 64 are lubricated in the spacer 65, which is disposed in the immediate vicinity of the rolling bearing, for example, adjacent to the outer ring 62 that is a fixed ring.
- a tank for storing oil (not shown)
- a pump 66 that sucks and discharges the lubricating oil in the tank
- the oil supply unit is composed of a nozzle 67 which extends between the nozzles 67 and opens at the tip thereof, and a pumping unit drive unit (not shown).
- the lubricating oil supplied from the tip opening to the inner peripheral surface of the cage, the centrifugal force generated by the rotation of the rolling bearing, causes the outer ring 62 to pass through the rolling element 63.
- the rolling bearing 63 is also transferred to the raceway surface of the inner ring 61 via the rolling elements 63, so that the rolling bearing can be effectively lubricated.
- the lubricating oil supplied from the nozzle that opens inside the rolling bearing also acts on the lubricating oil in addition to centrifugal force due to the air flow in the bearing that is generated by the rotation of the rolling bearing.
- Even if most of these nozzle arrangements are adopted and supplied to the inner peripheral surface of the cage 64, as shown by the arrows in FIG. 9 due to the turbulence of the air flow inside the rolling bearing, etc.
- the cage 64 flows toward the opposite side of the rolling element 63 on the inner peripheral surface of the cage 64 and flows out of the bearing, and it is difficult to say that the total amount contributes to the lubrication of the rolling bearing.
- jet lubrication, oil mist lubrication, oil / air lubrication, and the like are used as a method for supplying lubricating oil into the annular space of a rolling bearing device rotating at high speed.
- a lubrication device includes an oil lubrication pump that supplies lubricating oil to nozzles and a multi-distribution mechanism that distributes and supplies a minute amount of lubricating oil to these pumps (see Patent Document 2, etc.).
- Patent Document 1 Japanese Patent Publication No. 2004-108388
- Patent Document 2 JP 2002-130589 A
- Patent Document 3 Japanese Patent Application Laid-Open No. 2004-316707
- the conventional oil / air lubrication 'oil mist lubrication and the rolling force S-bearing device employing the lubrication mechanism disclosed in Patent Document 1 described above provide the number of lubricants equal to the number of distributions.
- a split housing with a feed hole and a distributor that distributes lubricating oil equally to each pipe or a multi-distribution mechanism consisting of a single valve and a motor are required, and the structure around the bearing is still complicated, reducing the size of the device. Cost reduction is difficult.
- a refueling unit including a pump, a tank, a battery, and a power source is arranged in the annular space of the rolling bearing, the configuration around the bearing becomes simple, but the capacity of the tank is limited due to the power source. In addition, the time during which the lubricating oil can be supplied is relatively shortened and the cost is increased. In particular, if the lubrication unit is not equipped with a sensor that detects the surrounding conditions, the rotation state of the bearing cannot be detected. Like the regrettable, I have to manually stop the refueling unit.
- the present invention has been made in view of such a situation, and the lubricating oil is more reliably disposed between the rolling elements and the raceway than the conventional rolling S bearing device having a self-lubricating function. It is an object of the present invention to provide a rolling bearing device that can lead to the lubrication and contribute to lubrication more efficiently.
- the bearing periphery is compact and simple, and a low-cost rolling bearing device capable of maintaining good lubrication even with a small amount of lubricant, and the use of this rolling bearing device for lubrication.
- the purpose is to provide a rotating device that eliminates as much external piping and incidental facilities as possible.
- the present application is characterized by having the following configuration.
- a rolling bearing comprising an annular cage for holding the plurality of rolling elements at a predetermined pitch in the circumferential direction;
- a nozzle that communicates with a tank that stores lubricating oil, and that is inserted and opened between an inner peripheral surface of the cage and the inner ring;
- a rolling bearing device comprising: a pump for supplying lubricating oil in the tank into the rolling bearing through the nozzle;
- a rolling bearing device characterized in that the inner peripheral surface of the retainer has a small diameter gradually or intermittently from the axial center to the end surface on the nozzle insertion side.
- the inner peripheral surface of the cage is also continuously or intermittently gradually from the axial center to the opposite end surface of the inner peripheral surface opposite to the insertion side of the nodule.
- a rolling bearing that is disposed in the housing, rotatably supports the rotation shaft relative to the housing, and includes an outer ring, an inner ring, and a plurality of rolling elements interposed between the outer ring and the inner ring.
- a pump disposed in or near an annular space formed between the outer ring and the inner ring;
- a nozzle having at least one end disposed in the annular space and opening in the annular space and the other end communicating with the discharge port of the pump;
- a tank for storing lubricating oil and communicating with the pump
- a rolling bearing device comprising: a pump driving driver connected to the pump and controlling a discharge amount of the lubricating oil of the pump;
- the driver for driving the pump is connected to an external power source installed outside the housing.
- the pump is operated by a current supplied from the external power source, and the lubricating oil stored in the tank is supplied to the pump.
- a rolling bearing device characterized in that it is supplied into the annular space from an opening provided at one end of a nozzle.
- a nozzle having at least one end disposed in an annular space of each of the plurality of rolling bearings, opening in the annular space and communicating with the discharge port of each pump at the other end;
- a tank for storing lubricating oil and communicating with the pump
- a rolling bearing device including a driver for driving a pump connected to each pump and controlling a lubricant discharge amount of each pump;
- Each driver for driving the pump is connected to a controller disposed outside the housing for transmitting a signal for controlling the operation of the driver, and each driver for driving the pump is installed outside the housing.
- the pump is connected to an external power source, and the pumps are operated by a current supplied from the external power source.
- the lubricating oil stored in the tank is supplied to each bearing from an opening provided at one end of each nozzle.
- a rolling bearing device wherein the rolling bearing device is supplied into the annular space.
- the controller passes the current supplied from the external power supply and cuts off the Z to control the operation of each pump and the lubricant discharge amount.
- the rotation shaft is driven by a motor, and the drive control of the motor is performed by the controller, and the drive control of the motor and the control force of each pump driver are controlled in conjunction with the controller. (9) or (10).
- the inner peripheral surface of the cage that is, the surface facing the outer peripheral surface of the inner ring is gradually reduced in diameter from the axial center to the end surface at least on the nozzle insertion side. Therefore, the lubricating oil supplied toward the inner peripheral surface of the cage is forced to act on the axial center of the bearing by the centrifugal force to prevent it from splashing outside the bearing.
- a nozzle for supplying lubricating oil is inserted and opened in a space between the cage and the inner ring, and the inner surface of the cage is connected to the inner surface of the cage at the end surface portion on the insertion side of the nozzle.
- Supply to the inner peripheral surface of the cage by using a tapered surface or a stepped surface or curved surface corresponding to the taper surface whose diameter is gradually or intermittently smaller than the inner diameter at the axial center.
- the applied lubricating oil exerts a directional force on the axial center due to the centrifugal force caused by the rotation of the cage accompanying the rotation of the bearing, so that the amount of lubricating oil flowing out of the bearing can be reduced or eliminated.
- the inner peripheral surface of the cage opposite to the insertion side of the nozzle in the axial direction also has a tapered surface or a tapered surface having a smaller diameter toward the end portion equivalent to the above.
- a stepped surface or curved surface even if the lubricating oil supplied to the inner peripheral surface of the discharge roller retainer of the nozzle goes to the opposite side beyond the center in the axial direction, the lubricating oil will remain on the opposite end surface. From the outside of the bearing can be prevented.
- a rolling bearing device having a function of inserting a nozzle into an annular space between inner and outer rings of a rolling bearing and supplying lubricating oil in the tank directly into the rolling bearing.
- the capacity of the lubricating oil storage tank can be increased, and the lubrication time (that is, the maintenance interval) can be extended. Further, if the tank capacity is the same as that of the conventional one, the member for installing the rolling bearing device or the tank can be made small.
- the arrangement position of the pump and its nozzle is within the housing and is not particularly limited as long as it is within or near the annular space of the rolling bearing.
- One end (tip) of the slip needs to face the rolling element beyond the air curtain (air barrier) formed when the bearing rotates.
- the pump since it is difficult to supply a small amount of lubricating oil unless the pump is placed close to the nozzle, when it is placed outside the bearing ring space, it is placed close to the rolling bearing in the housing. It is desirable to adopt a structure disposed on a member, that is, a spacer fixed adjacent to the fixed ring, a lid for closing the end of the housing, or the housing itself.
- connection between the controller and the driver is only a cord for supplying current, and the wiring is simplified.
- the rotating device that supports the rotating shaft arranged in the housing with the rolling bearing device of the invention according to (5;) to (8), the rotating device itself is a rolling force bearing. Therefore, it is possible to eliminate all or part of the external device for the lubricating oil. In addition, this rotating device can accurately control the discharge amount of the lubricating oil.
- the rotation of the rotating shaft and the discharge and discharge amount of the lubricating oil can be linked to prevent unnecessary discharge of the lubricating oil, and the overlap between the rolling bearing device and the rotating device can be avoided.
- the cost of the entire rotating device can be reduced.
- fine lubricant start / stop control or lubrication according to the number of rotations of the spindle as a rotating device The amount of oil can be adjusted, and it is possible to maintain good lubrication of the rotating equipment with the minimum amount of lubricant that does not waste the supplied lubricant.
- the rolling bearing device of the present invention can be configured in a compact and simple manner without providing auxiliary equipment such as a compressor.
- the entire apparatus can be configured at low cost.
- the lubricating oil is accurately supplied (dropped) to the required site, good lubrication of the rolling bearing device can be maintained over a long period of time with a small amount of lubricating oil that does not waste the lubricating oil.
- the rotating device of the present invention it is possible to perform self-lubrication with the rotating device alone without requiring all or part of the external device or external piping for lubrication, and the cost. Reduction, simplification of equipment, and integrated control of rotating equipment including lubrication.
- FIG. 1 is an axially parallel sectional view of an embodiment of the present invention.
- FIG. 2 is a left side view of the outer ring spacer 3 in FIG. 1.
- FIG. 3 is a diagram illustrating an example of the overall configuration of an oil supply unit according to an embodiment of the present invention, and is a diagram illustrating a schematic diagram illustrating a mechanical configuration and a block diagram illustrating an electrical configuration.
- FIG. 4 is an axially parallel sectional view of another embodiment of the present invention.
- FIG. 5 is an axial parallel cross-sectional view of still another embodiment of the present invention.
- FIG. 6 is a view showing both an axial parallel sectional view showing the configuration of the rotating device and a block diagram showing the configuration of an external device for lubrication in the embodiment of the present invention.
- FIG. 7 is an enlarged view of the main part of FIG.
- FIG. 8 is a front view of the outer ring spacer as viewed from the direction of arrow A in FIG.
- FIG. 9 is an axial parallel cross-sectional view showing a configuration example of a conventional rolling bearing device with a lubricating function.
- FIG. 1 is an axial parallel cross-sectional view of the first embodiment of the present invention
- FIG. 2 is a left side view of the outer ring spacer 3.
- This example shows an inner ring spacer 2 and an outer ring spacer 3 which are arranged adjacent to the anguilla ball bearing 1.
- the oil supply unit 4 is arranged in the outer ring spacer 3 which is a fixed side spacer.
- Anguilla ball bearing 1 has a structure in which a plurality of rolling elements (balls) 13 are held between inner ring 11 and outer ring 12 by a retainer 14 at regular intervals in the circumferential direction.
- outer ring 12 Is fixed to the housing H or the like as a fixed ring, and the shaft S is fixed to the inner peripheral surface of the inner ring 11.
- the oil supply unit 4 arranged in the outer ring spacer 3 communicates with the tank 41 storing the lubricating oil and the tank 41 via the pipe 41a, and sucks the lubricating oil in the tank 41. It consists mainly of a pump 42 to discharge, a nozzle 43 attached to the discharge port of the pump 42, and a drive circuit 44 of the pump 42, which are fixed along the inner peripheral surface of the outer ring spacer 3. ing. As shown in FIG. 1, the nozzle 43 is inserted into the space between the inner ring 11 and the cage 14 from one axial end side of the rolling bearing 1, and its tip opening 43a is the inner peripheral surface 14a of the cage 14. Or it opens between the rolling element 13 and the outer peripheral surface 11a of the inner ring 11.
- FIG. 3 shows an example of the overall configuration of the fuel supply unit 4 together with a schematic diagram showing a mechanical configuration and a block diagram showing an electrical configuration.
- the pump 42 includes a pump chamber 42a, a diaphragm 42b that forms a part of the wall of the pump chamber 42a, a piezoelectric element 42c attached to the diaphragm 42b, and a pump chamber 42a and a pipe 41a. And a check valve 42d provided with a connecting portion.
- the drive circuit 44 includes a power battery 44a and supplies, for example, a rectangular voltage signal to the piezoelectric element 42c. In this configuration, when a rectangular voltage signal is applied to the piezoelectric element 42c, the diaphragm 42b is displaced up and down in the drawing.
- the amount of lubricating oil supplied to the anguilla ball bearing 1 is a very small amount of about 30 ⁇ 1 (30 ⁇ cc). Depending on the usage conditions, the amount of lubricating oil supplied can be changed from several hundred pi to several hundred nl.
- the greatest feature of the first embodiment is the shape of the inner peripheral surface 14a of the cage 14 of the anguilla ball bearing 1.
- This retainer 14 has a substantially cylindrical shape as a whole, and is a force that is a resin-made scraped retainer in which pockets 14b for accommodating rolling elements 13 are formed at regular intervals in its cylindrical portion.
- the taper has a taper surface whose both ends are smaller in diameter on both sides of the axial center part with the inner diameter dimension of both end parts being smaller than the inner diameter dimension of the axial center part.
- the lubricating oil discharged from the tip opening 43a of the nozzle 43 is supplied onto the inner peripheral surface 14a of the retainer 14, and the retainer 14 is rotated. Due to the action of the centrifugal force, most of the fluid flows on the inner peripheral surface 14a of the cage 14 toward the center in the axial direction, does not flow to the end side, and flows out of the bearing.
- the lubricating oil flowing toward the axial center of the inner peripheral surface 14a of the cage 14 reaches the pocket 14b and adheres to the surface of the rolling element 13, and by its rotation and revolution, the raceway surface of the outer ring 12 and the inner ring 11 It is guided to the raceway surface and spreads throughout the anguilla ball bearing 1 to lubricate it efficiently.
- the shape of the inner peripheral surface 14a of the cage 14 is a tapered surface in which the inner diameter dimension becomes smaller toward the end portion on both sides of the axial center.
- the inner peripheral surface 14a of the retainer 14 has an end portion on the opposite side of the force that has a tapered surface similar to the above between the insertion-side end portion and the axial center portion of the nozzle 43.
- the inner peripheral surface between the central part in the axial direction is a cylindrical surface.
- the example in which the oil supply unit 4 is disposed adjacent to the outer portion of the angular ball bearing 1 has been shown.
- the annular ball bearing 70 provided with the inner ring 71, the outer ring 72, the rolling elements 73, and the cage 74 is used.
- One end side of the inner ring 71 and the outer ring 72 is extended in the axial direction to increase the width dimension, and an oil supply unit 4 equivalent to the previous example is disposed on the extended part of the outer ring 72.
- the nozzle 43 attached to the discharge port of the pump 42 is inserted between the inner peripheral surface 74a of the retainer 74 and the inner ring 71 and opened at the tip, and the inner periphery of the retainer 74
- the surface 74a is a tapered surface having a smaller diameter on the end side, and can provide the same operational effects as the above examples.
- the inner peripheral surface of the cage is a taper surface that has a smaller diameter toward the end side, but as a surface or curved surface that gradually decreases in diameter toward the end side.
- an example of using an anguilla ball bearing as a rolling bearing has been shown.
- the rolling bearing device of the present invention is equally applicable to a rolling bearing other than an anguilla ball bearing. Needless to say.
- FIG. 6 is a diagram showing an axial parallel sectional view showing the configuration of the spindle as the rotating device in the third embodiment of the present invention and a block diagram showing the configuration of the external device for lubrication.
- 7 is an enlarged view of the main part of FIG. 6, and
- FIG. 8 is a front view of the outer ring spacer and the fueling unit as seen from the direction of arrow A in FIG.
- the rotation device of the third embodiment has a configuration in which a main shaft 102 accommodated in a housing 101 is rotatably supported by four angular ball bearings 103.
- Each anguilla ball bearing 103 includes an inner ring 103a fitted and fixed to the main shaft 102, an outer ring 103b fitted to the housing 101, and a plurality of rolling elements (ball 1 03c) arranged so as to be able to roll between them. ), And a cage 103d that holds the balls 103c at predetermined intervals in the circumferential direction.
- An inner flange 101a is formed in a body on one end side of the housing 101, and a lid body 101b is screwed on the other end side.
- An outer ring 103b of each angular contact ball bearing 103 has a cylindrical outer ring spacer 104 which is arranged between the inner flange 101a, the lid 101b, and the outer ring 103b along the inner peripheral surface of the housing 101. ⁇ 104 and central spacer 105 Therefore, the movement in the axial direction is prevented and positioning is performed.
- a step 102a is formed at the end of the main shaft 102 on the side where the lid 101b is fixed, and a female screw 102b is formed at the end on the side where the inner flange 101a is formed.
- the bearing retainer 106 is screwed into the female screw 102b.
- the inner ring 103a of each anguilla ball bearing 103 includes a stepped portion 102a, a bearing retainer 106, and an inner ring spacer 107 ⁇ 107 and a central spacer disposed along the outer peripheral surface of the shaft 102 between each inner ring 103a. 108 is prevented from moving in the axial direction and is positioned.
- a feature of the rotating device in the third embodiment is that it is disposed adjacent to each outer ring 103b, and the outer ring spacer 104 has a driving power supply 110 for the motor (not shown) connected to this spindle.
- the oil supply unit 1 09 force that supplies lubricating oil to each of the angular ball bearings 103 in response to the supply of each is incorporated. Further, the operation of these oil supply units 109 is centrally managed by a signal of control means (programmable controller 111) force for controlling the rotation of the spindle 102.
- the oil supply unit 109 includes a tank 109a that stores lubricating oil, a pump 109b that sucks and discharges the lubricating oil in the tank 109a, and a discharge port of the pump 109b.
- the nozzle 109c and the driver 109d for driving the pump 109b are mainly configured, and these are fixed along the inner peripheral surface of the outer ring spacer 104.
- the tip of the nozzle 109c enters the annular space between the inner ring 103a and the outer ring 103b of the rolling bearing 103 and is opened immediately above the ball 103c.
- the tank 109a and the pump 109b communicate with each other through a pipe 109e.
- the rotating device itself has a rolling bearing lubrication function, and there is no need to dispose a large force auxiliary equipment such as a compressor as in the conventional rotating device.
- a large force auxiliary equipment such as a compressor
- the rotating device according to the third embodiment can realize a simplified device configuration and cost reduction.
- this rotating device uses a signal from the programmable controller 11 to control the oil supply unit 9, thereby finely controlling the integrated lubrication according to the rotational speed of the rotating device. It is possible to maintain good lubrication over a long period of time with the minimum amount of lubricant that can be used without waste.
- the oil supply unit 9 is incorporated in the outer ring spacer 4
- the present invention is not limited to this arrangement of the oil supply unit.
- the position may be any other position as long as it is on the fixed side in or near the annular space of the rolling bearing.
- it may be disposed on the inner peripheral surface of the outer ring 103b of each anguilla ball bearing 103, the inner peripheral surface of the lid 101b for closing the end of the housing 101, or the inner peripheral surface of the housing 101 itself.
- a large tank 109a for supplying the lubricating oil may be provided in the housing 101 or outside the housing 101, and the lubricating oil may be supplied to the plurality of pumps 109b.
- the driver 109d for driving the pump does not necessarily have to be disposed in the spacer 104.
- the driver 109d may be disposed in or near the annular space of the rolling bearing, or in the vicinity of the controller 111 outside the housing 101.
- the programmable controller 111 may replace the function provided in 101 locations in the housing 101 or outside the housing 101 and the function thereof. Adopting such a configuration has the advantage that the capacity of the lubricating oil tank can be increased.
- the rotating device of the present invention is configured to rotate the spindle on the controller 111. Control can also be used. Such a configuration is preferable because the entire rotating device including the lubrication of the spindle can be controlled in an integrated manner.
- the power supply of these oil supply units 109 and the power supply of the motor connected to the spinneret are made common, these power supplies may be provided separately.
- the power supply for supplying power to the fuel supply unit 109 and the programmable controller 111 may be integrated.
- the operation and discharge amount of the oil supply unit 109 can be controlled only by ONZOFF of the current supplied to the oil supply unit 109.
- the connection between the controller 111 and the oil supply unit 109 is a cord that supplies current. Wiring is easy to handle and it becomes simp nore.
- the rolling bearing device of the present invention can be applied to various rotating devices having a rotating shaft other than the spindle, and the present invention is also applied to a rotating device using a rolling bearing other than an anguilla ball bearing. can do.
- the number of rolling bearings is not particularly limited, and it goes without saying that the present invention can be equally applied to a rolling bearing device using an inner ring as a fixed ring, in addition to a rolling bearing device using an outer ring as a fixed ring.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06711731A EP1850019A4 (en) | 2005-01-17 | 2006-01-16 | BALL BEARING DEVICE AND TURNING DEVICE |
US11/795,311 US7883271B2 (en) | 2005-01-17 | 2006-01-16 | Rolling bearing device and rotary apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005008936A JP2006194402A (ja) | 2005-01-17 | 2005-01-17 | 転がり軸受装置 |
JP2005-008936 | 2005-01-17 | ||
JP2005076473A JP2006258192A (ja) | 2005-03-17 | 2005-03-17 | 転がり軸受装置および回転装置 |
JP2005-076473 | 2005-03-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006075741A1 true WO2006075741A1 (ja) | 2006-07-20 |
Family
ID=36677761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/300450 WO2006075741A1 (ja) | 2005-01-17 | 2006-01-16 | 転がり軸受装置および回転装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7883271B2 (ja) |
EP (1) | EP1850019A4 (ja) |
KR (1) | KR20070098994A (ja) |
WO (1) | WO2006075741A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20120008891A1 (en) * | 2009-05-16 | 2012-01-12 | Schaeffler Technologies Gmbh & Co. Kg | Rolling bearing having a cage to prevent flooding with lubricant |
US20160084313A1 (en) * | 2013-05-10 | 2016-03-24 | Ntn Corporation | Rolling bearing device |
WO2016152555A1 (ja) * | 2015-03-24 | 2016-09-29 | Ntn株式会社 | 軸受装置 |
CN110829289A (zh) * | 2019-11-21 | 2020-02-21 | 山东劳动职业技术学院(山东劳动技师学院) | 一种计算机网络设备维护用线材拆分装置 |
Families Citing this family (19)
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JP2009168139A (ja) * | 2008-01-16 | 2009-07-30 | Jtekt Corp | 転がり軸受装置 |
DK2385248T3 (da) * | 2010-05-06 | 2012-09-24 | Siemens Ag | Leje, især til en vindturbine |
CN103797259B (zh) | 2011-09-13 | 2018-03-02 | Ntn株式会社 | 轴承装置 |
DE102011084420B4 (de) * | 2011-10-13 | 2021-06-17 | Aktiebolaget Skf | Wälzlageranordnung mit einer Vorrichtung und Verfahren zum Zuführen eines Fluids in einen Wälzraum eines Wälzlagers |
EP2610513B1 (en) * | 2012-01-02 | 2014-08-13 | Aktiebolaget SKF | Assembly for lubricating a bearing |
US9702410B2 (en) * | 2012-12-20 | 2017-07-11 | Aktiebolaget Skf | Machine arrangement |
JP6160125B2 (ja) | 2013-03-01 | 2017-07-12 | 株式会社ジェイテクト | 転がり軸受装置 |
JP2015137668A (ja) * | 2014-01-21 | 2015-07-30 | Ntn株式会社 | 転がり軸受装置 |
DE102014001755A1 (de) * | 2014-02-10 | 2015-08-13 | Wacker Neuson Produktion GmbH & Co. KG | Öl-Schmiervorrichtung für Arbeitsgeräte |
CN104180145A (zh) * | 2014-07-18 | 2014-12-03 | 张家港易化设备科技有限公司 | 一种环形上油装置 |
JP6550697B2 (ja) * | 2014-07-23 | 2019-07-31 | 株式会社ジェイテクト | 転がり軸受装置及び給油ユニット |
JP6495700B2 (ja) * | 2015-03-17 | 2019-04-03 | Ntn株式会社 | 軸受装置および機械装置 |
JP6554918B2 (ja) * | 2015-06-05 | 2019-08-07 | 株式会社ジェイテクト | 転がり軸受装置 |
JP6648432B2 (ja) | 2015-07-14 | 2020-02-14 | 株式会社ジェイテクト | 軸受装置及び給油ユニット |
JP6746917B2 (ja) * | 2016-01-12 | 2020-08-26 | 株式会社ジェイテクト | 転がり軸受装置 |
JP6686473B2 (ja) * | 2016-01-29 | 2020-04-22 | 株式会社ジェイテクト | 軸受装置および軸受への潤滑油の供給方法 |
JP2018087595A (ja) * | 2016-11-29 | 2018-06-07 | 株式会社ジェイテクト | 転がり軸受装置及び給油ユニット |
JP2018087629A (ja) * | 2016-11-30 | 2018-06-07 | 株式会社ジェイテクト | 転がり軸受装置 |
FR3112824B1 (fr) * | 2020-07-27 | 2023-01-20 | Safran Aircraft Engines | Cage de roulement avec dispositif de lubrification |
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- 2006-01-16 EP EP06711731A patent/EP1850019A4/en not_active Withdrawn
- 2006-01-16 WO PCT/JP2006/300450 patent/WO2006075741A1/ja active Application Filing
- 2006-01-16 US US11/795,311 patent/US7883271B2/en active Active
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120008891A1 (en) * | 2009-05-16 | 2012-01-12 | Schaeffler Technologies Gmbh & Co. Kg | Rolling bearing having a cage to prevent flooding with lubricant |
US8746983B2 (en) * | 2009-05-16 | 2014-06-10 | Schaeffler Technologies AG & Co. KG | Rolling bearing having a cage to prevent flooding with lubricant |
US20160084313A1 (en) * | 2013-05-10 | 2016-03-24 | Ntn Corporation | Rolling bearing device |
US9581198B2 (en) * | 2013-05-10 | 2017-02-28 | Ntn Corporation | Rolling bearing device |
WO2016152555A1 (ja) * | 2015-03-24 | 2016-09-29 | Ntn株式会社 | 軸受装置 |
JP2016180449A (ja) * | 2015-03-24 | 2016-10-13 | Ntn株式会社 | 軸受装置 |
CN110829289A (zh) * | 2019-11-21 | 2020-02-21 | 山东劳动职业技术学院(山东劳动技师学院) | 一种计算机网络设备维护用线材拆分装置 |
Also Published As
Publication number | Publication date |
---|---|
US20080112661A1 (en) | 2008-05-15 |
EP1850019A1 (en) | 2007-10-31 |
US7883271B2 (en) | 2011-02-08 |
KR20070098994A (ko) | 2007-10-08 |
EP1850019A4 (en) | 2009-04-22 |
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