CN100587282C - Rolling bearing device and rotary device - Google Patents
Rolling bearing device and rotary device Download PDFInfo
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- CN100587282C CN100587282C CN200680002490A CN200680002490A CN100587282C CN 100587282 C CN100587282 C CN 100587282C CN 200680002490 A CN200680002490 A CN 200680002490A CN 200680002490 A CN200680002490 A CN 200680002490A CN 100587282 C CN100587282 C CN 100587282C
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Abstract
A rolling bearing device and a rotary device. The rolling bearing device comprises an oil supply unit supplying a lubricating oil in a tank by a pump through a nozzle opening in an annular space between an inner ring and an outer ring. The nozzle opens in a space between the inner peripheral surface of a retainer and the inner ring, and the inner peripheral surface of the retainer is formed to becontinuously or intermittently reduced in diameter gradually starting at its axial center part to at least the insertion side end part of the nozzle. Thus, the lubricating oil dripped on the inner peripheral surface of the retainer can be prevented from flowing out to the outside of the bearing by flowing it to the axial center part by a centrifugal force caused by the rotation of the retainer.
Description
Technical field
The present invention relates to a kind of rolling bearing system with self-lubricating function, be applicable to rolling bearing system with the machining tool of higher rotation speed rotation, and the rotating equipment that comprises this rolling bearing system.
Background technique
For example the rolling bearing of radial ball bearing is in order to support the axle with the higher rotation speed rotation, the various axles of for example using on machining tool.As the lubricated Lubrication of Rolling Contact Bearing method that is used for this type of axle of support high-speed rotation, usually, mainly use the oil-air lubrication method in many cases.
The oil-air lubrication method is the method that rolling bearing micro lubricating oil that intermittently provides is provided by pipeline by means of pressurized air, in the method, owing to provide it to bearing by the rolling bearing ambient air curtain that forces lubricant oil to pass to be formed on high speed rotating, so pressurized air uses as so-called carrier.
In this oil-air lubrication method, oil-air lubrication device and mixing valve, and compressor and exterior tubing must be positioned at the outside of parts such as axle, is combined with the bearing as lubricated object in described axle, in addition, need be formed for the passage of oil and air in the inside of parts such as axle.This causes following problem, that is, cost of production improves and because the sound level increase of using pressurized air to cause.
In order to address the above problem, a kind of rolling bearing system has been proposed, wherein the lubricant oil feed mechanism is arranged on rolling bearing inside (for example, referring to patent documentation No.1).
In the technology of this proposal, be used to store the fuel tank of lubricant oil and retaining ring one side that pump is installed in rolling bearing, nozzle is installed on the pump by this way, be opened near the rolling element that rolls between the inside and outside ring of rolling bearing so that extend, make minute quantity, or for example the lubricant oil of tens nl (or tens μ cc) drips towards the rolling element of rotation through its below.By this configuration, because lubricant oil offers the air curtain inside that forms when rolling bearing rotates, the pressurized air that for example plays carrier function in the oil-air lubrication method no longer is necessary, thereby solved noise problem, and compressor and oil-air lubrication device, and exterior tubing and internal pipeline also no longer be necessary, and wherein the technology among the patent documentation No.1 becomes favourable.
In having the rolling bearing system of this lubricating function, how to make the lubricant oil of supplying with from nozzle effectively promote lubricated between rolling element and the bearer ring to constitute the key issue that will solve.Because rotating ring, rolling element and the retainer high speed rotating of rolling bearing, sometimes following situation can take place, promptly, so provide and adhere to lubricant oil on any element of rolling bearing and be subjected to along away from the active force (being called centrifugal force hereinafter) that rotates element rotating center directive effect, thereby make lubricant oil be difficult between bearer ring and rolling element, flow.When considering centrifugal force like this, the nozzle location that shows in the sectional view of rolling bearing system shown in Figure 9 is represented the preferred arrangements of nozzle, and wherein rolling bearing system is parallel to its axis and cuts open.In the example of rolling bearing system shown in Figure 9, adopt following configuration, wherein, be used for being fixed to the local of very close rolling bearing or being fixed to the Spacer 65 that contiguous outer shroud 62 is provided with at the fuel tank (not shown) and the oil supply unit of internal reservoir lubricant oil, described oil supply unit is by pump 66, nozzle 67 and driver element (not shown) are formed, described pump is used for sucking-off and is stored in the lubricant oil of fuel tank so that discharge, described nozzle is installed in the exhaust port place of pump 66 by this way, so that between the external peripheral surface of the inner circumferential surface of retainer 64 and interior ring 61, extend and open at its far-end, described driver element is used for driven pump 66, described rolling bearing is mainly by interior ring 61, outer shroud 62, rolling element 63 and retainer 64 are formed, and described outer shroud constitutes the retaining ring of bearing.
Layout according to nozzle 67 like this, be provided to lubricant oil on the inner circumferential surface of retainer from nozzle 67 distal openings under the action of centrifugal force that produces by means of the rolling bearing rotation, raceway face towards outer shroud 62 on rolling element 63 flows, and transmit with on the raceway face that adheres to interior ring 61, thereby may the effectively lubricating rolling bearing via rolling element 63.
Incidentally, except centrifugal force, because the caused active force of air-flow that results from the rolling bearing by the bearing rotation also acts on on the lubricant oil of nozzle, wherein said nozzle is open to rolling bearing inside.Therefore, even adopting arrangement of nozzles as shown in Figure 9 so that will so provided almost whole lubricant oil be provided under the situation on the inner circumferential surface of retainer 64, also following situation can take place sometimes, promptly, lubricant oil flows at the opposite side of the inner circumferential surface upper edge of retainer 64 direction of arrow shown in Figure 9 towards rolling element 63, thereby because therefore former the thereby outflow rolling bearing that the bearing internal gas flow disturbs can not guarantee that the lubricant oil total amount that is provided all is used for bearing lubrication.
Usually, be used for lubricant oil is provided to that method in the annular space that the rolling bearing at high speed rotating limits is known methods such as jet lubrication, oil mist lubrication, oil-air lubrication.
But, in these methods, arrive from the outside in the annular space in order to make lubricant oil, need make lubricant oil pressurization or quicken by pressurized air, thereby need comprise the large-scale accessory of compressor etc.In addition, because that the lubricants capacity that provides surpasses is required, a large amount of lubricant oil finally are wasted.For fear of environmental pollution, need the mechanism of the recovery and the excessive lubricant oil that circulates.
In order to address the above problem, for under the situation of not using compressor, micro lubricating oil is evenly offered reliably the method for a plurality of bearings from single lubricating fitting with stationary mode, a kind of lubricating fitting has been proposed, comprise be used for lubricant oil be discharged to bearing nozzle, be used for that lubricant oil offered the oil lubrication pump of nozzle and be used for micro lubricating oil is distributed to the multi-distribution mechanism (for example, referring to patent documentation No.2) of each pump.
In addition, present inventor and other people have also proposed the compact type rolling bearing system, wherein, pump, fuel tank and oil supply unit are set in the annular space of rolling bearing, described oil supply unit comprises as the battery of power supply or generator (referring to patent documentation No.1,3 etc.).
Patent documentation No.1:JP-A-2004-108388
Patent documentation No.2:JP-A-2002-130589
Patent documentation No.3:JP-A-2004-316707
Incidentally, adopting traditional oil-air lubrication, oil mist lubrication or be disclosed in the rolling bearing system of the lubricating structure among the above-mentioned patent documentation No.1, devices such as split type shell, multi-distribution mechanism and motor are essential, wherein each shell has the lubricant oil supply hole that distributes with equal amount, multi-distribution mechanism is made up of distributor or the rotary valve of lubricant oil equivalent being distributed to every pipeline, this still need leave complex configurations around bearing, thereby is difficult to make the rolling bearing system miniaturization and reduces its cost of production.Particularly, stretch to from pump nozzle with the very long situation of the pipeline that lubricant oil is provided under, the lubricant oil pulsation (pressure) that is produced by pump weakens, and followingly worries thereby produce, and, can not obtain the lubricant oil velocity of discharge or the lubricant oil discharge capacity that need that is.
In addition, when oil supply unit, fuel tank and the battery comprise pump or power supply were set in the annular space at rolling bearing, the configuration around the bearing became simple.But, owing to the power supply reason that so is provided with is restricted reservoir capacity, therefore, can provide the time of lubricant oil to become shorter, and cost increases.Particularly, do not have at oil supply unit under the situation of the sensor that detects peripheral situation, owing to can not detect the rotation status of bearing, therefore when rolling bearing did not rotate, manually the fuel cut-off unit was so that prevent the continuation waste of lubricant oil.
In addition, under the rolling bearing with oil supply unit is incorporated into situation in the shell, be difficult to manual fuel cut-off unit, although perhaps manual fuel cut-off unit, but still there is following worry, that is,, cause oil leak because the bearing rotation has just stopped being created in afterwards the heat on the bearing periphery.
In addition, be provided with under the situation of a plurality of rolling bearings, be difficult to make rolling bearing to stop simultaneously, and can not stop the lubricant oil discharge for the bearing rotation stops the set suitable moment.Therefore, cause following possibility, that is, overlubricate oil enters in the annular space of bearing.
Summary of the invention
The technical problem to be solved in the present invention
The present invention makes according to above-mentioned situation, its purpose is to provide a kind of rolling bearing system, this rolling bearing system can be introduced lubricant oil between rolling element and the bearer ring in the mode of more insurance, and compare with rolling bearing, can make so provided lubricant oil more effectively promote bearing lubrication with traditional self-lubricating function.
In addition, another object of the present invention is to provide a kind of rolling bearing system cheaply and a kind of rotating equipment, described rolling bearing system compactness, be configured on the periphery of rolling bearing simply, even utilize micro lubricating oil also can keep good lubrication, in described rotating equipment, attempt the exterior tubing and the accessory that are used to lubricate by using described rolling bearing system to cancel as much as possible.
Technological means
To achieve these goals, according to All aspects of of the present invention, present patent application has following configuration.
(1) a kind of rolling bearing system comprises:
Rolling bearing, this rolling bearing comprises interior ring, outer shroud, a plurality of rolling element and annular retainer, but described rolling element is arranged between described interior ring and the outer shroud with means of rolling, and described annular retainer is used for along the circumferential direction keeping described a plurality of rolling element with predetermined interval;
Nozzle, this nozzle is communicated with the fuel tank that is used to store lubricant oil, is inserted between the inner circumferential surface of retainer and the interior ring and forms opening; With
Pump, this pump is provided in the rolling bearing by the lubricant oil that nozzle will be stored in the fuel tank,
Wherein, the inner circumferential surface of described retainer forms the retainer internal diameter is reduced with continuous or discontinuous manner gradually from the end face part of axial centre part side on the nozzle inserting side.
(2) rolling bearing of basis (1), a part that wherein is positioned at the retainer inner circumferential surface on the opposite side of nozzle inserting side so forms, and makes the retainer internal diameter reduce gradually with continuous or discontinuous manner from the end face of axial centre part one side on opposite side.
(3) a kind of rolling bearing system comprises:
Rolling bearing, this rolling bearing setting are used to support the running shaft that can rotate with respect to this shell in the enclosure, and comprise that outer shroud, interior ring and a plurality of rolling element, described rolling element are arranged between described outer shroud and the interior ring;
Pump, this pump be arranged in the annular space that is defined between described outer shroud and the interior ring or near;
Nozzle, at least one end is arranged in this annular space this nozzle with it in the mode at this annular space inner opening, and its other end is communicated with pump discharge;
Fuel tank, this fuel tank portion within it store lubricant oil and are communicated with described pump; With
Pump drives uses driver, and this pump drives the lubricant oil discharge capacity that is connected to described pump and is used for control pump with driver,
Wherein, described pump drives and is connected to the external power supply that is arranged on housing exterior with driver, thus the current drives pump by supplying with from external power supply, so that the lubricant oil that will be stored in the fuel tank is provided to the described annular space from the opening that is arranged on nozzle one end.
(4) according to the rolling bearing system of (3), wherein said fuel tank is arranged near the pump.
(5) a kind of rolling bearing system comprises:
A plurality of rolling bearings, these a plurality of rolling bearings are provided with coaxially and are used to support the running shaft that can rotate with respect to this shell in the enclosure, and each rolling bearing comprises raceway member and a plurality of rolling element, described raceway member is made up of outer shroud and interior ring, and described rolling element is arranged between the described raceway member;
Pump, its be separately positioned in the annular space between the raceway member that is defined in described a plurality of rolling bearings or near;
Nozzle makes the one end be arranged in the annular space of described a plurality of rolling bearings so that at the annular space inner opening respectively, and is communicated with the exhaust port of pump at its other end respectively;
Fuel tank, it is used for being communicated with at internal reservoir lubricant oil and with described pump; With
Pump drives uses driver, and it is connected respectively on the described pump so that control pump lubricant oil discharge capacity separately,
Wherein, described pump drives and is connected to the controller that is positioned at housing exterior with driver, and transmits signal and the operation separately of controlling and driving device, and
Wherein, described pump drives and is connected on the external power supply that is arranged on housing exterior with driver, thereby by the current drives pump of supplying with from external power supply, so that the lubricant oil that will be stored in the fuel tank is provided to the annular space respectively from the opening that is arranged on nozzle one end.
(6) according to the rolling bearing system of (5), wherein fuel tank is separately positioned near the pump, to be used for providing lubricant oil individually to pump.
(7) according to the rolling bearing system of (5) or (6), wherein said controller transmits the signal of control to each pump removal of lubricant.
(8) according to the rolling bearing system of (5) or (6), wherein said controller is by permission and forbid that the electric current from the external power supply supply flows the operation and the lubricant oil discharge capacity of difference control pump, rather than transmits control signal to the pump driving with driver respectively.
(9) a kind of rotating equipment, the running shaft that wherein is arranged in its shell is supported by rolling bearing system any in (5) to (8).
(10) according to the rotating equipment of (9), wherein running shaft is by motor driven, and the external power supply of rolling bearing is also used as the driving power of motor.
(11) according to the rotating equipment of (9) or (10), wherein said running shaft is by motor driven, and the drive controlling of described motor is carried out by controller, and the control of the drive controlling of motor and pump driving usefulness driver is by the control associated with each other of described controller.
Invention according to (1) prevents that to the active force of core lubricant oil is scattering into the bearing outside by applying towards bearing shaft to lubricant oil by means of centrifugal force, wherein form the inner circumferential surface of retainer by such mode, promptly, towards the retainer surface of the external peripheral surface of interior ring so that reduce the retainer internal diameter towards being positioned at the end face part that inserts on nozzle one side at least from axial centre part one side, thereby described lubricant oil is supplied with towards the inner circumferential surface of retainer.
Promptly, be used to provide the nozzle of lubricant oil to insert in the space between retainer and the interior ring also opening, the internal surface of retainer forms conical surface, stepped surfaces or with the curved surface of the similar formation of described conical surface, wherein, the retainer internal diameter that is positioned at the end face portion office of inserting nozzle reduces with respect to the retainer internal diameter of partly locating with the axial centre of continuous or discontinuous manner gradually in mode continuous or that be interrupted, therefore, the lubricant oil that offers the retainer inner circumferential surface bears the active force that partly produces towards the axial centre of retainer by means of the rotation of the retainer relevant with the bearing rotation, flows thereby might reduce the lubricants capacity that flows to the bearing outside or eliminate this lubricant oil.
In addition, as according to the invention of (2), the inner circumferential surface that is positioned at the retainer on the axial opposite side that inserts nozzle one side also forms conical surface, ladder surface or curved surface, wherein the retainer internal diameter is to reduce towards the end with above-mentioned (1) similar mode, whereby, the lubricant oil that offers the inner circumferential surface of retainer from the exhaust port of nozzle passes axial centre and flows towards described opposite side, thereby prevents that the lubricant oil that so flows from flowing out to beyond the bearing from being positioned at end face on the retainer opposite side.
According to the present invention, in having the rolling bearing system of following function, promptly, by being inserted into, nozzle make the lubricant oil that is stored in the fuel tank directly offer rolling bearing inside in the annular space between the inside and outside ring that is defined in rolling bearing, provide lubricant oil to flow out bearing result in addition as preventing, the utilization efficiency of lubricant oil improves, and under the situation of the lubricant oil fuel tank that lubricant oil can not be full of again, the life-span that so is stored in lubricant oil is wherein prolonged, and under the situation of the lubricant oil fuel tank that lubricant oil can be full of again, lubricant oil is full of and is prolonged blanking time.
According to (3) described invention, got rid of for example necessity of the main equipment of compressor has been set on the bearing periphery, therefore, whole bearing unit can dispose compactly, thereby the lubricants capacity that needs is directly offered near (or dripping to) rolling element.In addition, with regard to the lubricants capacity that provides with regard to the start-stop of supplying lubricating oil and/or from the bearing outside, can easily control rolling bearing system.
According to the invention described in (4), only be useful on electric current offered the encoder (code) of driver and be used to set up the short tube line that connects between fuel tank and the pump and must be arranged on the bearing periphery, therefore, the miscellaneous equipment except power supply can be incorporated in the described annular space or near it.In addition, can realize oil supply unit only by providing electric current to operate automatically, and following advantage is provided that required MQL oil can accurately be provided near the rolling element, and not influenced by long lines.
In addition, compare, can increase the capacity of lubricant oil fuel tank, therefore, can prolong lubrication interval (that is maintenance period) with the traditional oil supply unit that is used for rolling bearing.In addition, have under the situation of same capability, can reduce rolling bearing or it is provided with the size of the member of fuel tank with traditional fuel tank.
According to invention described in (5), even under the situation of the rolling bearing system that comprises a plurality of rolling bearings, for example necessity of the main equipment of compressor is set on the bearing periphery as inventing described in (1), having got rid of, therefore, can dispose whole bearing unit compactly.In addition, can control the oil supply unit of independent operation with centralized system, therefore, can control start-stop and/or the lubricant oil delivery volume that lubricant oil is supplied with together from the bearing outside by the controller that is arranged on enclosure.
Notice that in the present invention, the position that pump and nozzle are set is positioned at shell and the position is not had specific limited, as long as this position is positioned at the annular space of rolling bearing or it is neighbouring.But an end (far-end) of nozzle need extend through the air curtain (innerliner) of formation when bearing rotates so that near rolling element.In addition, the difficulty because the supply of micro lubricating oil becomes, unless pump is placed on the position near nozzle, therefore under the situation outside pump is positioned over the bearing annular space, wish to adopt following configuration, wherein pump is arranged on the member of arranging near the rolling bearing in the shell, and described member promptly is close to the fixing Spacer of retaining ring, is used for the cap member or the shell itself of covering shell end.
According to invention described in (6), has only the wiring that for example electric current is offered the electric wire of driver, be used to transmit the controlling and driving device signal encoder or connect the encoder of driver and pump, and set up the short tube line that connects between fuel tank and the pump and must be arranged on the periphery of each bearing, therefore, the miscellaneous equipment except power supply can be incorporated in the annular space in each bearing or near it as much as possible.
According to invention described in (8), the connection between controller and the driver only realizes by the electric wire of supplying electric current, so wiring becomes simple.
According to by as (5) to (8) described any one rolling bearing system support the rotating equipment of setting running shaft in the enclosure in the above described manner, rotating equipment itself can keep the function of lubricating bearings, thereby might not need to be used for external equipment whole or a part of of lubricant oil.In addition, this rotating equipment can accurately be controlled the lubricant oil discharge capacity.
According to the configuration of formerly describing, allow running shaft rotation, lubricant oil discharge and lubricant oil discharge capacity associated with each other, therefore, not only can avoid unnecessary lubricant oil to discharge, can also avoid similar devices to repeat to be arranged on rolling bearing system and the rotating equipment, thereby might reduce the cost of production of whole rotating equipment.In addition, in having the machining tool of programmable controller, by using control signal can realize the accurate control of the start-stop that lubricant oil is supplied with or the adjusting of lubricants capacity from programmable controller, thereby be complementary with rotational speed as the axle of rotating equipment, this has eliminated the waste of the lubricant oil that supplies, thereby might utilize minimum lubricant oil to keep the good lubrication of rotating equipment.
The invention advantage
According to the rolling bearing system of having described up to now of the present invention, rolling bearing system can dispose compact and simply, and for example accessory of compressor need not be provided, and therefore, can dispose whole rolling bearing system at low cost.In addition, because lubricant oil can accurately offer (dropping onto) and need the position, lubricant oil is waste not, thereby might utilize less amount of lubrication oil to keep the good lubrication of rolling bearing system for a long time.
In addition, compare with the rolling bearing system that comprises traditional oil supply unit, lubricant oil can be discharged for a long time, and the lubricant oil that perhaps has with traditional oil supply unit equal number is kept, and therefore, oil supply unit and rolling bearing system can dispose compactly.
In addition, according to rotating equipment of the present invention, rotating equipment can carry out selflubricating under the situation auxiliary without any need for other member, therefore, whole or the part of external equipment that is used to lubricate and exterior tubing is no longer for essential, therefore, can realize that not only the cost of production of bearing unit configuration reduces, configuration is simplified, can also realize the integrated control that comprises that rotating equipment is lubricated.
Description of drawings
Fig. 1 is the parallel to an axis sectional view of the embodiment of the invention;
Fig. 2 is the left view of outer shroud Spacer 3 shown in Figure 1;
Fig. 3 has shown the schematic representation of the whole profile instance of oil supply unit in the embodiment of the invention;
Fig. 4 is the parallel to an axis sectional view of the improvement example of the embodiment of the invention;
Fig. 5 is the parallel to an axis sectional view of an alternative embodiment of the invention;
Fig. 6 is the schematic representation that has shown a parallel sectional view and a block diagram, and described sectional view has shown the configuration of rotating equipment according to another embodiment of the present invention, and described block diagram has shown the configuration of external lubrication device;
Fig. 7 is the enlarged view of the major component of configuration shown in Figure 6;
Fig. 8 is the front elevation from the outer shroud Spacer of direction of arrow observation shown in Figure 7;
Fig. 9 is the parallel to an axis sectional view that has shown the rolling bearing system profile instance with conventional lubrication function.
Embodiment
First embodiment
Hereinafter, the first embodiment of the present invention is described with reference to the accompanying drawings.
Fig. 1 is the axial sectional view of first embodiment of the invention, and Fig. 2 is the left view of first embodiment's outer shroud Spacer 3.
This embodiment has shown the interior interannular parting 2 of setting adjacent one another are in radial ball bearing 1 and the example of outer shroud Spacer 3, and wherein oil supply unit 4 is arranged on the outer shroud Spacer 3, and described outer shroud Spacer constitutes the Spacer on bearing 1 fixed side.
Fig. 3 has shown the overall arrangement example of oil supply unit 4, has wherein shown the block diagram of the exemplary patterns and the electrical configurations of machine layout together.
Pump 42 by pump chamber 42a, form the wall portion of pump chamber 42a barrier film 42b, be fixed to the piezoelectric element 42c on the barrier film 42b and be arranged on pump chamber 42a and the safety check 42d of the joint office of pipe between the 41a forms.Drive circuit 44 comprises supplying cell 44a and for example rectangular voltage signal is provided for piezoelectric element 42c.In this configuration, when the rectangular voltage signal being provided for piezoelectric element 42c, barrier film 42b vertical movement, as shown in the figure.When barrier film 42b moves up, lubricant oil in the fuel tank 41 sucks pump chamber 42a by safety check 42d and pipe 41a, and when after barrier film 42b is moving up, moving down, lubricant oil row in the pump chamber 42a is to nozzle 43, so that offer the inner circumferential surface of retainer 14 from the distal openings 43a of nozzle 43.When lubricant oil is discharged by pump 42, under any circumstance can prevent lubricant oil recurrent canal 41a one side in the pump chamber 42a by existing safety check 42d.The lubricants capacity that offers radial ball bearing 1 is few, is about 30nl (30 μ cc).In addition, according to use condition, the supply of lubricant oil can arrive hundreds of nl for hundreds of pl.This first embodiment's notable feature is the shape of inner circumferential surface 14a of the retainer 14 of radial ball bearing 1.Retainer 14 is machining resin retainer, it roughly forms cylindrical shape on the whole, bag (pocket) 14b that wherein is used to hold rolling element 13 is formed on the cylindrical part of retainer with predetermined interval, but, inner circumferential surface forms conical surface, the retainer internal diameter partly located less than axial centre of the internal diameter at place, two ends wherein makes the internal diameter of the retainer that is positioned at position, axial centre part both sides along with the retainer inner circumferential surface extends and reduces gradually to the end from its axial centre part.
According to first embodiment who disposes as mentioned above, the lubricant oil of discharging from the distal openings 43a of nozzle 43 is provided on the inner circumferential surface 14a of retainer 14, subsequently under the centrifugal action that produces by means of retainer 14 rotations, so provided nearly all lubricant oil flows to its axial centre on the inner circumferential surface 14a of retainer 14, and do not exist flow of lubricant to end one side to flow out to the situation outside the bearing thus.Then, the lubricant oil that flows to axial centre on the inner circumferential surface 14a of retainer 14 arrives bag 14b, thereby adheres on the surface of rolling element 13.When rolling element 13 rolls along the raceway face of two bearer rings when himself axis rotation, the lubricant oil that so adheres on the rolling element 13 is directed to the raceway face of outer shroud 12 and the raceway face of interior ring 11 subsequently, thereby thoroughly is sent on the whole radial ball bearing 1 so that it is carried out effectively lubricating.
At this, in first embodiment, the shape of the inner circumferential surface 14a of retainer 14 is made conical surface, the retainer internal diameter partly located less than axial centre of the internal diameter at place, two ends wherein, make the retainer internal diameter be positioned at position, axial centre part both sides along with the retainer inner circumferential surface extends and reduces gradually to the end from its axial centre part, therefore, partly arrive opposite side even flow through axial centre at the lubricant oil that offers the part on the inner circumferential surface 14a, part on the wherein said inner circumferential surface 14a is positioned under the situation of inserting nozzle 43 1 sides, can prevent that also lubricant oil from flowing out to bearing from the end on the described opposite side beyond.But the conical surface on the opposite side is not necessarily leaveed no choice but setting like this.Fig. 4 is the parallel to an axis sectional view, has shown the improvement example to embodiment, and it is integrated following configuration wherein,, conical surface is not set on the opposite side of retainer inner circumferential surface that is.Improve in the example at this, conical surface similar to the above is formed on the part on the inner circumferential surface 14a that is positioned at retainer 14, this part is partly stretched to from axial centre and is positioned at the end of inserting on nozzle 43 1 sides, barrel surface is formed on the part that is positioned on the inner circumferential surface simultaneously, and this part is stretched to the axial centre part from the end that is positioned on the opposite side that inserts nozzle 43 1 sides.According to the condition that its middle (center) bearing was used, even utilize this configuration also can obtain effect and advantage with the foregoing description equivalence.
Second embodiment
Although in first embodiment who has above described, oil supply unit 4 is described to be arranged on the outside of contiguous radial ball bearing 1, shown in the parallel to an axis sectional view among Fig. 5, oil supply unit 4 also can be arranged in the bearing.That is, in second embodiment shown in Figure 5, to formerly embodiment is similar, ring 71, outer shroud 72, rolling element 3 and retainer 74 in radial ball bearing 70 comprises.In the radial ball bearing 70 of so configuration, each distolateral extending axially so that increase the width dimensions of each ring of interior ring 71 and outer shroud 72 is arranged on the extension of outer shroud 72 with the similar oil supply unit 4 of first embodiment.Equally in this embodiment, the nozzle 43 that is installed in the exhaust port place of pump 42 is inserted between the inner circumferential surface 74a and interior ring 71 of retainer 74 by this way, promptly in its distal openings, on the inner circumferential surface 74a of retainer, conical surface is set in such a manner, make retainer 74 internal diameters reduce towards tip side, therefore, can acquisition and the foregoing description and improve function and advantage like the example class.
In addition, in embodiment and improvement example, although the inner circumferential surface of retainer is provided with conical surface by this way, make the retainer internal diameter reduce gradually towards tip side, even but be provided with surface or curved surface by this way at inner circumferential surface, make internal diameter with step-wise manner under the situation that tip side reduces gradually, also can provide basically certainly and embodiment and improve function and advantage like the example class.
In addition, in embodiment who had above described and improvement example, although radial ball bearing is described to as rolling bearing, rolling bearing system of the present invention can certainly be applied to other rolling bearing except radial ball bearing.
The 3rd embodiment
Hereinafter, the third embodiment of the present invention is described with reference to the accompanying drawings.
Fig. 6 is the schematic representation that has shown a parallel sectional view and a block diagram, and described sectional view has shown the configuration of conduct according to the axle of the rotating equipment of third embodiment of the invention, and described block diagram has shown the configuration of external lubrication device.In addition, Fig. 7 is the enlarged view of the major component of configuration shown in Figure 6, and Fig. 8 is from the outer shroud Spacer of arrow A direction observation shown in Figure 7 and the front elevation of oil supply unit.
The 3rd embodiment's rotating equipment is configured to make the axle 102 that is contained in the shell 101 rotatably to be supported by four radial ball bearings 103.Each radial ball bearing 103 is universal ball bearing, it comprises the interior ring 103a that is fixedly secured on the axle 102, is installed in the outer shroud 103b in the shell 101, a plurality of rolling element (ball 103c) and retainer 103d, described rolling element is arranged between the inside and outside ring in this mode so that roll betwixt, and described retainer along the circumferential direction keeps described ball 103c separately with predetermined interval.
In addition, step part 102a is formed on cap member 101b is fixed on the end of the axle 102 on the shell 101, external screw thread or outside thread 102b are formed on the end of the axle 102 that is formed with inner flange 101a, and therefore, bearing bracket 106 is screwed onto on the outside thread 102b.By step part 102a, bearing bracket 106, interior interannular parting 107,107 and Center Gap thing 108 make radial ball bearing 103 ring 103a location and prevent that it from moving axially in each, described in the interannular parting be arranged in such a way between interior ring 103a so that paste external peripheral surface with axle 102.
The 3rd embodiment's rotating equipment is characterised in that following configuration, wherein oil supply unit 109 is incorporated in each outer shroud Spacer 104, described outer shroud Spacer is respectively adjacent in outer shroud 103b and is provided with, provide lubricant oil to corresponding radial ball bearing 103 during electric current that described oil supply unit 109 is configured to provide at the driving power 110 that receives the motor (not shown), described motor is connected on the axle.In addition, by the SC sigmal control from control unit (programmable controller 111), described control unit is controlled the rotation of axle 102 with centralized system in the operation of these oil supply units 109.
Shown in Fig. 7 and 8, oil supply unit 109 mainly by the fuel tank 109a that is used for storing lubricant oil, be used for sucking-off is stored in the lubricant oil of fuel tank 109a with discharge pump 109b, the nozzle 109c at the exhaust port place that is installed in pump 109b and the driver 109d of driven pump 109b form, these constituent elementss are fixed thereon along the inner circumferential surface of outer shroud Spacer 104.
In addition, as shown in Figure 7, the far-end of nozzle 109c inserts in the interior ring 103a and the annular space between the outer shroud 103b that is defined in rolling bearing 103 by this way, makes near opening above the ball 103c.In addition, fuel tank 109a and pump 109b communicate with each other by pipe 109e.
By above-mentioned configuration, this rotating equipment itself keeps lubricating function with lubricated rolling bearing, therefore, do not need to be set to traditional rotating equipment intrinsic large-scale accessory, compressor for example.In addition, if there is the equipment with identical function in the equipment of rolling bearing system and rotating equipment, this equipment also can be common for them.Therefore, can realize simplifying configuration, reducing production costs according to the 3rd embodiment's rotating equipment.
In addition, utilize this rotating equipment, by using signal from the programmable controller 11 that is used to control oil supply unit 9, can realize the accurate integrated control of lubricating by the mode of the rotational speed of matching rotation equipment, thereby make not waste of the lubricant oil that supplies, and might utilize less amount of lubrication oil maintenance good lubrication in long-time.
In addition, in the 3rd embodiment who has above described, although oil supply unit 9 is described as being incorporated in the outer shroud Spacer 4, but the invention is not restricted to this, therefore, oil supply unit can be arranged on other position, as long as they are arranged in the annular space of each rolling bearing or are arranged near the rolling bearing fixed side.For instance, oil supply unit 9 for example can be arranged on the inner circumferential surface of outer shroud 103b of each radial ball bearing 103, on the inner circumferential surface of the cap member 101b of covering shell 101 ends, perhaps on the inner circumferential surface of shell 101 itself.
In addition, in the present invention, all members of forming oil supply unit 109 needn't be incorporated in the rolling bearing or in the shell 101.For the fuel tank 109a that lubricant oil is provided, large tank can be arranged in the shell 101 by this way or shell 101 outer so that lubricant oil is provided for a plurality of pump 109b.
In addition, it is not must be arranged in the Spacer 104 that pump drives with driver 109d, but can be arranged on the annular space of rolling bearing interior or its near, perhaps be set in place near the controller 111 outside shell 101, or the like.In addition, pump drives with driver 109b can whole be arranged in the shell 101 or position outside the shell 101, and perhaps programmable controller 111 can replace the function of pump driving with driver 109b.By adopting the configuration of just having been described, can have the following advantages, that is, can increase the capacity of lubricating oil tank greatly.
In addition, in the 3rd embodiment, although described configuration is described as realizing by programmable controller 111 control of oil supply unit 109, utilize rotating equipment of the present invention, controller 111 also can be controlled the rotation of axle.Utilize this configuration, comprise that the lubricated whole rotating equipment of axle can preferably control with centralized system.Notice that although in this embodiment, the power supply that is connected to the motor on the axle is described as with 109 of oil supply units shared, also can power supply be set respectively for motor and oil supply unit.
In addition, be used for providing the power supply of electric energy to combine with the power supply of programmable controller 111 to oil supply unit 109.In this case, the operation of oil supply unit 109 and the discharge capacity electric current that can be only offers oil supply unit 109 by on/off is controlled.In addition, by adopting this configuration, controller 111 and oil supply unit 109 can be only by providing the electric wire of electric current to be connected to each other to oil supply unit, thereby simplify wiring topology.
Certainly, rotating equipment of the present invention can be applied to have the various rotating equipments of other running shaft outside the axle, and the present invention can be applied to use the rotating equipment of other rolling bearing outside the radial ball bearing.In addition, the number of used rolling bearing is not specifically limited, certainly, the present invention not only can be applied to the rolling bearing of outer shroud as retaining ring, and ring is as the rolling bearing of retaining ring in also can being used for.
Claims (2)
1. rolling bearing system comprises:
Rolling bearing, this rolling bearing comprises interior ring, outer shroud, a plurality of rolling element and annular retainer, but described a plurality of rolling element is arranged between described interior ring and the outer shroud with means of rolling, and described annular retainer is used for along the circumferential direction keeping described a plurality of rolling element with predetermined interval;
Nozzle, this nozzle is communicated with the fuel tank that is used to store lubricant oil, and is inserted between the inner circumferential surface of retainer and the interior ring and opening; With
Pump, this pump is provided in the rolling bearing by the lubricant oil that nozzle will be stored in the fuel tank,
Wherein, the inner circumferential surface of described retainer forms the retainer internal diameter is reduced with continuous or discontinuous manner gradually from the end face part of axial centre part side on the nozzle inserting side,
Wherein, ring comprises recess in described, this recess is positioned near raceway face of described ring vertically and has diameter and reduces part and diameter increase part, this diameter reduces part and reduces at diametrically towards the direction of leaving the described interior raceway face of encircling, and this diameter increases part and is connected in the diametrically increase and with described diameter minimizing part
Wherein, the distal openings of described nozzle radially reduces the part overlaid with described diameter.
2. rolling bearing system as claimed in claim 1, a part that wherein is positioned at the retainer inner circumferential surface on the opposite side of nozzle inserting side so forms, and makes the retainer internal diameter reduce gradually with continuous or discontinuous manner from the end face of axial centre part side on opposite side.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005008936A JP2006194402A (en) | 2005-01-17 | 2005-01-17 | Rolling bearing device |
| JP008936/2005 | 2005-01-17 | ||
| JP076473/2005 | 2005-03-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101107454A CN101107454A (en) | 2008-01-16 |
| CN100587282C true CN100587282C (en) | 2010-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680002490A Active CN100587282C (en) | 2005-01-17 | 2006-01-16 | Rolling bearing device and rotary device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006194402A (en) |
| CN (1) | CN100587282C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958595A (en) * | 2016-01-12 | 2017-07-18 | 株式会社捷太格特 | Rolling bearing system |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6054095B2 (en) * | 2012-08-20 | 2016-12-27 | Ntn株式会社 | Rolling bearing device |
| EP2757278A4 (en) | 2011-09-13 | 2015-09-30 | Ntn Toyo Bearing Co Ltd | Bearing device |
| JP2014031810A (en) * | 2012-08-01 | 2014-02-20 | Ntn Corp | Rolling bearing device |
| DE102011084420B4 (en) * | 2011-10-13 | 2021-06-17 | Aktiebolaget Skf | Rolling bearing arrangement with a device and method for feeding a fluid into a rolling space of a rolling bearing |
| JP6160125B2 (en) * | 2013-03-01 | 2017-07-12 | 株式会社ジェイテクト | Rolling bearing device |
| JP6215569B2 (en) * | 2013-05-10 | 2017-10-18 | Ntn株式会社 | Rolling bearing device |
| DE102014211364A1 (en) * | 2014-06-13 | 2016-01-07 | Schaeffler Technologies AG & Co. KG | Rolling bearing for a sprocket in a transfer case |
| JP6550697B2 (en) * | 2014-07-23 | 2019-07-31 | 株式会社ジェイテクト | Rolling bearing device and oil supply unit |
| JP6446887B2 (en) * | 2014-07-23 | 2019-01-09 | 株式会社ジェイテクト | Rolling bearing device and oil supply unit |
| JP6554918B2 (en) * | 2015-06-05 | 2019-08-07 | 株式会社ジェイテクト | Rolling bearing device |
| JP6648432B2 (en) | 2015-07-14 | 2020-02-14 | 株式会社ジェイテクト | Bearing device and lubrication unit |
| JP2017203495A (en) * | 2016-05-11 | 2017-11-16 | 株式会社ジェイテクト | Rolling bearing device |
| JP6831162B2 (en) * | 2016-11-10 | 2021-02-17 | Ntn株式会社 | Bearing device cooling structure |
| JP6828478B2 (en) * | 2017-02-06 | 2021-02-10 | 株式会社ジェイテクト | Bearing equipment |
| CN112050990A (en) * | 2020-07-17 | 2020-12-08 | 温州冶金机械测试研究所 | Detection device for detecting reasonable assembly torque of fastener |
| FR3112824B1 (en) * | 2020-07-27 | 2023-01-20 | Safran Aircraft Engines | Bearing cage with lubrication device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002089573A (en) * | 2000-09-12 | 2002-03-27 | Ntn Corp | Structure and method for lubricating rolling bearing with air-oil |
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- 2005-01-17 JP JP2005008936A patent/JP2006194402A/en active Pending
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958595A (en) * | 2016-01-12 | 2017-07-18 | 株式会社捷太格特 | Rolling bearing system |
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| Publication number | Publication date |
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| JP2006194402A (en) | 2006-07-27 |
| CN101107454A (en) | 2008-01-16 |
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