CN104747599B - Rolling bearing and spindle device for machine tool - Google Patents
Rolling bearing and spindle device for machine tool Download PDFInfo
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- CN104747599B CN104747599B CN201510041035.4A CN201510041035A CN104747599B CN 104747599 B CN104747599 B CN 104747599B CN 201510041035 A CN201510041035 A CN 201510041035A CN 104747599 B CN104747599 B CN 104747599B
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- annular portion
- convex
- retainer
- outer peripheral
- jut
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- 238000005096 rolling process Methods 0.000 title claims abstract description 40
- 230000002093 peripheral effect Effects 0.000 claims abstract description 61
- 238000005461 lubrication Methods 0.000 claims abstract description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 abstract description 24
- 239000004519 grease Substances 0.000 abstract description 11
- 238000004904 shortening Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 206010057175 Mass conditions Diseases 0.000 description 2
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
-
- 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
- F16C33/46—Cages for rollers or needles
- F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
- F16C33/4676—Details of individual pockets, e.g. shape or roller retaining means of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
-
- 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
- F16C33/46—Cages for rollers or needles
- F16C33/4605—Details of interaction of cage and race, e.g. retention or centring
-
- 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
- F16C33/46—Cages for rollers or needles
- F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
- F16C33/4682—Details of individual pockets, e.g. shape or roller retaining means of the end walls, e.g. interaction with the end faces of the rollers
-
- 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
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6622—Details of supply and/or removal of the grease, e.g. purging grease
-
- 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
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6629—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
-
- 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
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
- F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
-
- 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 buildup of machine tools, e.g. spindles, slides, actuators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Turning (AREA)
Abstract
The present invention is provided a kind of can suppress the mid-winter of rolling bearing, and rolling bearing and spindle device for machine tool when shortening grease lubrication the time required to trial operation by improving the discharge of lubricant.Retainer (10) used in the rolling bearing of the present invention has：A pair of the annular portions (12) configured side by side vertically；With the multiple post portions (16) along the circumferential direction configured at a predetermined interval in the way of connecting a pair of annular portions (12).Each annular portion (12) has the multiple convex juts (15) being along the circumferential direction separately formed on respective outer peripheral face (13).The convex jut (15) of one annular portion (12) forms positions different from the convex jut (15) of another annular portion (12) in a circumferential direction.
Description
Technical field
The present invention relates to a kind of rolling bearing and spindle device for machine tool, in more detail, it is related to a kind of be used at a high speed
The rolling bearing of the machine tool chief axis and high-speed motor of rotation etc., and use the main unit for shaft of lathe of the rolling bearing.
Background technology
In recent years, for used bearing on highly-efficient processing spindle device for machine tool, and high speed is advanced.If
The discharge of lubricant is deteriorated in the bearing of rotation at a high speed, then in the excessive state of lubricant, due to stirring the generation of heat
And cause abnormal heating.In this case, bearing temperature rises extremely, it is possible to cause bearing damage.
Figure 10 is to represent existing cylinder roller bearing 100.Cylinder roller bearing 100 has：Have on inner peripheral surface outer
Enclose raceway 102a outer ring 102；There is inner ring raceway 103a inner ring 103 on outer peripheral face；Rolling is arranged at outer ring freely
Multiple rollers 104 between raceway 102a and inner ring raceway 103a；And with multiple pocket holes for keeping multiple rollers 104
111 retainer 110.Here, retainer 110 employs outer ring guidance mode, the outer peripheral face 110a of retainer 110 is as being drawn
Guide face function.
In the retainer 110 of such outer ring guidance mode, due to outer peripheral face 110a and the outer ring 102 of retainer 110
Inner peripheral surface between guide clearance g ＇ it is narrow, thus cause the discharge of lubricant to be deteriorated, easily trigger cylinder roller bearing
100 mid-winters.And then, in such cylinder roller bearing 100, outer ring raceway 102a and inner ring raceway 103a and roller
(rolling element) 104 linear contact lay, therefore, and outer ring raceway 102a and inner ring raceway 103a carries out point contact with ball (rolling element)
Ball bearing compare, cylinder roller bearing 100 be easier to heating.
In addition, when being lubricated grease lubrication, after by grease filled bearing, in order that the lubricating grease enclosed exists
Bearing inner equably scatter, or in order that remaining lubricating grease is moved along bearing periphery, so-called trial operation is not
Can or it lack.In the retainer 110 of such outer ring guidance mode, the outer peripheral face 110a of retainer 110 is interior with outer ring 102
Guide clearance g ＇ between side face are narrow, thus cause the discharge of lubricant to be deteriorated, and trial operation spends the time long.
In order to improve the discharge of lubricant, in the past, it is proposed that (for example join in the setting recess on face that is directed of retainer
According to patent document 1,2).
Prior art literature
Patent document 1：No. 3651591 publications of Japanese Patent No.
Patent document 2：No. 4342612 publications of Japanese Patent No.
The problem of being solved needed for invention
Rolling bearing according to patent document 1 and 2, utilizes the recess energy being directed on face for being arranged at retainer
Enough improve the discharge of lubricant.But, in the case where lubricant is excessive, mid-winter easily occurs for rolling bearing.
The content of the invention
The present invention is to propose in view of the above problems, and its object is to provide a kind of rolling bearing and lathe main shaft
Device, its discharge by improving lubricant, can suppress the mid-winter of rolling bearing, and can shorten and moistened
The time needed for trial operation during grease lubrication.
The means used to solve the problem
The purpose of the present invention is reached by following composition.
(1) a kind of rolling bearing, has：There is the lubrication groove of lubrication groove track on outer peripheral face；There is foreign steamer on inner peripheral surface
The foreign steamer of track；Rotatably it is arranged at multiple rotors between the lubrication groove track and the outer wheel track；And tool
There is the retainer for keeping multiple pocket holes of the multiple rotor；Characterized in that, the retainer has：Axially
The first annular portion and the second annular portion configured side by side；And be configured at predetermined intervals on circumferencial direction and be used for will be described
Multiple post portions that first annular portion is connected with second annular portion；First annular portion and second annular portion exist
There are the multiple convex juts formed circumferentially separated from each otherly, second annular portion on respective outer peripheral face
Convex jut and first annular portion convex jut formation different positions in a circumferential direction on.
(2) rolling bearing according to (1), wherein, the convex jut of first annular portion and second circle
The convex jut of ring portion respectively in a circumferential direction to form at equal intervals.
(3) according to the rolling bearing described in (1) or (2), wherein, the convex jut of first annular portion and described the
The convex jut of two annular portions is axially adjacent to be formed with the post portion respectively.
(4) a kind of spindle device for machine tool, wherein, (1) has been used to the rolling bearing any one of (3).
Invention effect
According to the present invention rolling bearing and spindle device for machine tool, lubricant can from retainer be not provided with it is convex
The part of shape jut is smoothly discharged, and thereby, it is possible to suppress the mid-winter of rolling bearing, and can shorten lubricating grease profit
Trial run time when sliding.
Brief description of the drawings
Fig. 1 is the sectional view of the rolling bearing of first embodiment of the invention.
Fig. 2 is the stereogram of the retainer in Fig. 1.
Fig. 3 represents the retainer in Fig. 2, wherein, (a) is front view, and (b) is the part that the I directions from (a) are observed
Top view.
Fig. 4 represents the retainer of the rolling bearing of second embodiment of the invention, wherein, (a) is front view, (b) be from
(a) partial top view that the II directions in are observed.
Fig. 5 represents that the retainer of the rolling bearing of third embodiment of the invention, (a) are front views, and (b) is from (a)
III directions observation partial top view.
Fig. 6 is the sectional view for representing the experimental rig used in embodiment 1,2.
Fig. 7 is the curve map for the result of the test for representing embodiment 1.
Fig. 8 represents the retainer used in the rolling bearing of comparative example 2, wherein, (a) is front view, and (b) is from (a)
In the partial top view observed of X-direction.
Fig. 9 is the curve map for the result of the test for representing embodiment 2.
Figure 10 is the sectional view of existing rolling bearing.
Description of reference numerals
1 cylinder roller bearing
2 outer rings
2a outer ring raceways face
3 inner rings
3a inner ring raceways face
4 cylindrical rollers,
10 retainers
11 pocket holes
12 annular portions
15 convex juts
16 post portions
Embodiment
Hereinafter, each embodiment with reference to the accompanying drawings to the rolling bearing of the present invention is described in detail.
(first embodiment)
Hereinafter, the rolling bearing of the first embodiment of the present invention is illustrated according to Fig. 1.Fig. 1 represents the first implementation
The sectional view of the cylinder roller bearing 1 of mode.Fig. 2 represents the stereogram of the retainer 10 in Fig. 1.Fig. 3 represents the holding in Fig. 2
Frame 10, wherein, (a) is to maintain the front view of frame 10, and (b) is the partial top view from the I directions of (a).
As shown in figure 1, cylinder roller bearing 1 has：Outer ring raceway face 2a outer ring 2 is formed with inner peripheral surface；Outside
Inner ring raceway face 3a inner ring 3 is formed with side face；It is used as multiple cylindrical rollers 4 of rolling element；And be configured at outer ring 2 with it is interior
Retainer 10 between circle 3.Multiple pocket holes 11 are formed with retainer 10, being maintained in each pocket hole 11 can free rolling
Multiple cylindrical rollers 4.
As shown in Fig. 2 retainer 10 has：A pair of the annular portions 12 configured side by side vertically；It is configured at a predetermined interval
With multiple post portions 16 between two annular portions 12 of connection on circumferencial direction.By a pair of annular portions 12 and circumferentially adjacent two
Individual post portion 16 forms pocket hole 11.In addition, the circumferencial direction both sides of the axial pars intermedia in post portion 16, with from the outer peripheral face in post portion 16
Prominent mode is provided with the roller retainer 14 for reliably keeping cylindrical roller 4.
On the outer peripheral face 13 of a pair of annular portions 12, multiple convex juts are along the circumferential direction formed with predetermined intervals
15.Each convex jut 15 has：Diameter is more than the convex jut outer peripheral face 15a of the outer peripheral face in post portion 16；Respectively from convex
Outer peripheral face 13 continuous a pair of rising portions 15b of the shape jut outer peripheral face 15a circumferencial direction both sides to annular portion 12.Retainer
10 are employed convex jut outer peripheral face 15a are guided using the retainer guide surface that is formed on the inner peripheral surface of outer ring 2
Outer ring guidance mode.
In addition, convex jut 15 is configured to, it is axially adjacent with post portion 16 on the outer peripheral face 13 of each annular portion 12.
Here, as shown in Fig. 2, Fig. 3 (a) and (b), in retainer 10 used in the first embodiment, by each annular portion 12
Multiple convex juts 15 be configured to, it is respectively axially adjacent with post portion 16 in the way of the post portion 16 of one, interval.In addition,
The convex jut 15 of one annular portion 12 is configured to so that the convex jut 15 of another annular portion 12 with not vertically
Adjacent post portion 16 is axially adjacent.That is, convex jut 15 is configured to, convex jut 15 is not present in post portion 16
Axial both sides, and by the convex jut 15 by it is interconnected in the left and right in post portion 16 in the way of configure in a pair of annular portions 12
On outer peripheral face.
So, the cylinder roller bearing 1 of first embodiment, with outer peripheral face 13 circumferentially between predetermined
Every the retainer 10 for being formed with multiple convex juts 15, convex jut 15 is formed as the axial either side phase only with post portion 16
It is adjacent.Therefore, even between the guiding between the axial side in post portion 16, convex jut outer peripheral face 15a and retainer guide surface
Gap g is identical with existing guide clearance g ＇, and on the axial opposite side in post portion 16 or the part in the absence of post portion 16, annular portion
Clearance G between 12 outer peripheral face 13 and the inner peripheral surface (retainer guide surface) of outer ring 2 is also larger.Therefore, it is possible to by lubricant
Swimmingly discharged from the clearance G.Further, since guide clearance g size and clearance G it is of different sizes, thus in two annulus
Pressure differential is produced between portion 12 and triggers the convection current of air, and the discharge of lubricant is further promoted by convection action.In addition,
Erected by being continuously provided with from outer peripheral face 13 of the convex jut outer peripheral face 15a circumferencial direction both sides to annular portion 12 respectively
Portion 15b, can relax air drag when rotating at a high speed, so as to further improve the discharge of lubricant.Therefore, according to
The cylinder roller bearing 1 of present embodiment, mid-winter when can suppress to rotate at a high speed, also can when being lubricated grease lubrication
Enough shorten the time of trial operation.
(second embodiment)
Hereinafter, the rolling bearing of second embodiment of the present invention is illustrated according to Fig. 4, Fig. 4 represents the second implementation
Retainer 20 used in the cylinder roller bearing of mode, (a) is to maintain the front view of frame 20, and (b) is being seen from II directions for (a)
The partial top view examined.
Retainer 20 used in second embodiment, tool same with retainer used in first embodiment 10
Have：A pair of the annular portions 22 configured side by side vertically；And in the way of it will be connected between two annular portions 22 along the circumferential direction
The multiple post portions 26 configured at a predetermined interval.Pocket hole is formed by a pair of annular portions 22 and two circumferentially adjacent post portions 26
21.In addition, the circumferencial direction both sides of the axial pars intermedia in post portion 26, are provided with the way of being protruded from the outer peripheral face in post portion 26
Roller retainer 24.
On the outer peripheral face 23 of a pair of annular portions 22, multiple convex juts are along the circumferential direction formed with a predetermined interval
25.Each convex jut 25 has：Diameter is more than the convex jut outer peripheral face 25a of the outer peripheral face in post portion 26；Respectively from convex
Outer peripheral face 23 continuous a pair of rising portions 25b of the shape jut outer peripheral face 25a circumferencial direction both sides to annular portion 22.Retainer
20 employ the outer ring that the retainer guide surface being formed from the inner peripheral surface of outer ring is guided to convex jut outer peripheral face 25a
Guidance mode.
In retainer used in second embodiment 20, convex jut 25 is configured to, and makes convex jut 25 not
It is present in the axial both sides in post portion 26.And then, it is different from first embodiment in retainer 20, by many of each annular portion 12
Individual convex jut 15 is configured to, and separates two post portions 16 and respectively axially adjacent with post portion 16.By such configuration,
More swimmingly lubricant can be discharged from cylinder roller bearing, therefore, it is possible to suppress mid-winter when rotating at a high speed, and
And the trial run time when being lubricated grease lubrication can be shortened.
(the 3rd embodiment)
Then, third embodiment of the present invention is illustrated according to Fig. 5.Fig. 5 represents the radical-thrust of the 3rd embodiment
Retainer 30 used in ball bearing, wherein, (a) is to maintain the front view of frame 30, and (b) is that the III directions from (a) are seen
The partial top view observed.
Identical with the retainer 10 used in first embodiment, the retainer 30 shown in Fig. 5 has：It is arranged side by side vertically
A pair of annular portions 32 of configuration；The multiple posts along the circumferential direction configured at a predetermined interval in the way of connecting between two annular portions 32
Portion 36.Pocket hole 31 is formed by a pair of annular portions 32 and two circumferentially adjacent post portions 36.
On the outer peripheral face 33 of a pair of annular portions 32, multiple convex juts are along the circumferential direction formed at predetermined intervals
35, the convex jut 35 has：Diameter is more than the convex jut outer peripheral face 35a of the outer peripheral face in post portion 36；With a pair of convexs
Jut peripheral side 35b.In convex jut outer peripheral face 35a circumferencial direction both sides, a pair of convex jut peripheral sides
The outer peripheral face 33 of annular portion 32 and convex jut outer peripheral face 35a are connected as the shape in approximate right angle by 35b.Retainer 30 is adopted
Convex jut outer peripheral face 35a outer ring guiding side is guided with the retainer guide surface being formed from the inner peripheral surface of outer ring
Formula.In the rotary course of angular ball bearing, convex jut outer peripheral face 35a is by lodging in convex jut peripheral side
The lubricant of part of reporting to the leadship after accomplishing a task between face 35b and the outer peripheral face of annular portion 32 33 is lubricated.
In the third embodiment in used retainer 30, also convex jut 35 is configured to, makes convex projection
Portion 35 is not present in the axial both sides in post portion 36.In addition, it is identical with the retainer 10 used in first embodiment, by each circle
Multiple convex juts 35 of ring portion 32 are configured to, respectively axially adjacent with post portion 36 across a post portion 36.By this
Lubricant, can be smoothly discharged by the setting of sample from angular ball bearing, during therefore, it is possible to suppress to rotate at a high speed
Mid-winter, the time of trial operation can be also shortened when being lubricated grease lubrication.
In addition, the present invention is not limited to above-mentioned embodiment, appropriate change and improvement etc. can be also carried out.Above-mentioned
In embodiment, to cylinder roller bearing, radical-thrust roller bearing is illustrated, but the present invention can also be applicable deep trouth rolling
Other rolling bearings such as pearl bearing, taper roll bearing.In addition, in use, being used as retainer material under considering to rotate in high speed
Material, is preferably than metal more light weight and the synthetic resin of excellent in abrasion resistance, phenol, polyamide, PPS, PEEK and polyimides
Deng preferably.Alternatively, it is also possible to add the toughness reinforcings such as glass fibre, carbon fiber and aramid fibre in these above-mentioned materials
Agent.
In addition, convex jut is not limited to be configured to axially adjacent with post portion, annular portion can also be configured at
Any place on outer peripheral face.For example, convex jut can also be configured to it is axially adjacent with pocket hole.Even if convex jut with
The adjacent situation in the axial side in pocket hole, if the axial opposite side in pocket hole is not configured with convex jut, and pocket hole axle to
The guide clearance g of side size is different from the clearance G of the axial opposite side in pocket hole, then pressure differential is produced between annular portion,
And occur the convection current of air.Hereby it is possible to promote the discharge of lubricant using convection action.In addition, making according to rolling bearing
It is different with purpose, it can suitably determine to set rising portions in the circumferencial direction both sides of convex jut, or set convex projection
The circumferencial direction side in portion.
Embodiment 1
Here, the heating when high speed on rolling bearing rotates and the relation between the shape of retainer are tried
Test.Fig. 6 is the sectional view of the evaluation experimental device 50 for this experiment, and the cylinder roller bearing 1 as test bearing is assembled
In housing 51, with a side of supporting rotating shaft 52.Lubricant is fed through nozzle 53 and entered to cylinder roller bearing 1
OK.Experiment has used the (comparative example of cylinder roller bearing 100 shown in cylinder roller bearing 1 (example) and Figure 10 shown in Fig. 1
1).The experimental condition (experimental condition 1) of embodiment 1 is as follows.
(experimental condition 1)
Bearing：Cylinder roller bearing (N1011RSTPKR)
Size：Internal diameter φ 55mm × profile φ 90mm × width 18mm
Oil mass condition：0.01cc/1shot (with 2 minutes intervals discontinuously fuel feeding)
Use oil：Turbine oil VG32
Fig. 7 represents the result of the test of embodiment 1.It can be seen from Fig. 7, relative to comparative example 1 cylinder roller bearing 100 with
From operation start through sharp being heated up with the acceleration of rotation after a while, in the cylinder roller bearing 10 of example
Then inhibit heating.According to this results showed that in the cylinder roller bearing 1 of example of the present invention, the row of lubricant is improved
Going out property, can suppress mid-winter.
Embodiment 2
Relation during high speed rotation on rolling bearing between the heating that occurs and the shape of retainer, with embodiment 1
Tested compared to experimental condition is changed.In the experiment of embodiment 2, also use similarly to Example 1 shown in Fig. 6
Evaluation experimental device 50.Experiment has used the cylinder roller bearing 1 (example) shown in Fig. 1, the cylindrical roller axle shown in Figure 10
Hold 100 (comparative examples 1) and the rolling bearing (comparative example 2) using the retainer 210 shown in Fig. 8.The experimental condition of this experiment
(experimental condition 2) is as follows.
(experimental condition 2)
Bearing：Cylinder roller bearing (N1011RSTPKR)
Size：Internal diameter φ 55mm × profile φ 90mm × width 18mm
Oil mass condition：0.01cc/lshot (the discontinuously fuel feeding with 8 minutes intervals)
Use oil：Turbine oil VG32
Retainer 210 shown in Fig. 8, it is identical with the retainer 10 used in the first embodiment of the present invention, have：
A pair of the annular portions 212 configured side by side vertically；And along the circumferential direction between predetermined in the way of connecting between two annular portions 212
Every multiple post portions 216 of configuration.Pocket hole 211 is formed by a pair of annular portions 212 and two circumferentially adjacent post portions 216.
In the outer peripheral face 213 of a pair of annular portions 212, multiple convex juts are formed with the way of from axial sandwich post portion 216
215.Each convex jut 215 has the diameter convex jut outer peripheral face 215a bigger than the outer peripheral face in post portion 216.Retainer
210 employ the retainer guide surface for being formed from outer ring inner peripheral surface, and the outer peripheral face 215a of convex jut is guided
Outer ring guidance mode.
Fig. 9 represents the result of the test of embodiment 2.It can be seen from Fig. 9, compared with the cylinder roller bearing of comparative example 1,2, suppression
The temperature for having made the cylinder roller bearing 1 of example rises.From this results showed that example of the present invention cylinder roller bearing
The discharge of lubricant is improved in 1, and inhibits heating.
Herein, it is believed that compared with the cylinder roller bearing of comparative example 2, the cylinder roller bearing 1 of example inhibits heating,
The reason is that being configured at the axle in post portion 216 relative to convex bulge 215 in the retainer 210 used in comparative example 2
To the structure of both sides, convex jut 15 is formed only into the axial direction times in post portion 16 in the retainer 10 used in example
Side.The post portion 216 of retainer 210 used in comparative example 2, its external diameter direction utilizes outer ring (not shown), its circumference side
Cylindrical roller (not shown) is utilized to both sides, and its axial both sides is surrounded using convex bulge 215, to form closing
Space.Due to be difficult in the closing space occur air convection current, therefore enter the closing space in lubricant be difficult to from
Closing space is discharged to outside.
On the other hand, in the cylinder roller bearing 1 of example, can will attach to the lubricant of the outer circumferential side of post portion 16 from
Axially unilateral (side for being formed without convex jut 15) in post portion 16 is smoothly discharged.And then, by making to be formed at holding
The size of guide clearance g and clearance G between frame 10 and outer ring 2 are mutually different in the axial both sides in post portion 16, in two annular portions
Pressure differential is produced between 12, and occurs the convection current of air.Thus, the discharge of lubricant is further promoted using convection action,
So as to improve the discharge of lubricant.Therefore, according to the cylinder roller bearing 1 of example, when can suppress to rotate at a high speed
Mid-winter, the time of trial operation can be also shortened when being lubricated grease lubrication.
More than, embodiments of the present invention and embodiment are illustrated, but the invention is not limited in above-mentioned
Embodiment, as long as in the scope described in claims, various changes just can be carried out.The application is based on 2010 8
Japanese patent application (Patent 2010-183349) filed in the moon 18, its content is incorporated into this as reference.
Claims (3)
1. a kind of rolling bearing, has：There is the lubrication groove of lubrication groove track on outer peripheral face；There is outer wheel track on inner peripheral surface
Foreign steamer；Rotatably it is arranged at multiple rotors between the lubrication groove track and the outer wheel track；And with for
Keep the retainer in multiple pocket holes of the multiple rotor；Characterized in that,
The retainer has：The first annular portion and the second annular portion axially configured side by side；And at predetermined intervals
It is configured on circumferencial direction and is used for the multiple post portions for connecting first annular portion and second annular portion；
First annular portion and second annular portion have circumferentially separated from each other on respective outer peripheral face
Multiple convex juts of ground formation, the convex jut of second annular portion and the convex jut of first annular portion
Formed on different positions in a circumferential direction,
There is the convex jut diameter to be more than the outer peripheral face in the post portion and convex jut periphery circumferentially
Face,
The retainer guide surface being formed from the inner peripheral surface of outer ring is guided to the convex jut outer peripheral face,
Wherein, the convex jut of first annular portion and the convex jut of second annular portion are respectively in circumferencial direction
On to be formed at equal intervals,
In the circumferencial direction both sides of the axial pars intermedia in the post portion, it is provided with the way of being protruded from the outer peripheral face in the post portion
Roller retainer for keeping the multiple rotor.
2. rolling bearing according to claim 1, wherein, the convex jut of first annular portion and second circle
The convex jut of ring portion axially is adjacent to be formed with the post portion respectively.
3. a kind of main shaft device for working machine, wherein, use the rolling bearing described in claim 1 or 2.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010183349 | 2010-08-18 | ||
| JP2010-183349 | 2010-08-18 | ||
| CN2011800025319A CN102483092A (en) | 2010-08-18 | 2011-08-03 | Rolling bearing and spindle device for machine tool |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800025319A Division CN102483092A (en) | 2010-08-18 | 2011-08-03 | Rolling bearing and spindle device for machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104747599A CN104747599A (en) | 2015-07-01 |
| CN104747599B true CN104747599B (en) | 2017-08-08 |
Family
ID=45605093
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800025319A Pending CN102483092A (en) | 2010-08-18 | 2011-08-03 | Rolling bearing and spindle device for machine tool |
| CN201510041035.4A Active CN104747599B (en) | 2010-08-18 | 2011-08-03 | Rolling bearing and spindle device for machine tool |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800025319A Pending CN102483092A (en) | 2010-08-18 | 2011-08-03 | Rolling bearing and spindle device for machine tool |
Country Status (6)
| Country | Link |
|---|---|
| JP (2) | JP6016632B2 (en) |
| KR (1) | KR101368100B1 (en) |
| CN (2) | CN102483092A (en) |
| DE (1) | DE112011102719B4 (en) |
| TW (1) | TWI481786B (en) |
| WO (1) | WO2012023437A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013191238A1 (en) * | 2012-06-21 | 2013-12-27 | 日本精工株式会社 | Rolling bearing, and spindle device for machine tool |
| CN103697066B (en) * | 2012-09-27 | 2018-04-03 | 舍弗勒技术股份两合公司 | Sheet metal cage for a rolling bearing |
| FR3000772B1 (en) * | 2013-01-10 | 2015-06-19 | Ntn Snr Roulements | CAGE FOR BEARING UNIT, AND BEARING UNIT EQUIPPED WITH SUCH A CAGE. |
| DE102013212962A1 (en) * | 2013-07-03 | 2015-01-08 | Aktiebolaget Skf | Bearing cage for extended grease service life |
| JP6369083B2 (en) | 2013-11-25 | 2018-08-08 | 株式会社ジェイテクト | Split cage and roller bearing |
| DE102013226132B4 (en) * | 2013-12-16 | 2019-02-14 | Aktiebolaget Skf | Cage for a rolling bearing and roller bearing with a cage |
| DE102014201104A1 (en) | 2014-01-22 | 2015-08-06 | Schaeffler Technologies AG & Co. KG | Lubrication-optimized rolling bearing cage for cylindrical roller bearings |
| DE102015206533A1 (en) * | 2015-04-13 | 2016-10-13 | Schaeffler Technologies AG & Co. KG | Cage segment of a cage of a rolling bearing and cage of a rolling bearing |
| US20170102032A1 (en) * | 2015-10-12 | 2017-04-13 | Schaeffler Technologies AG & Co. KG | Low friction ball bearing cage design with optimized contact surface |
| CN105134775A (en) * | 2015-10-12 | 2015-12-09 | 山东凯美瑞轴承科技有限公司 | Hybrid bearing with center regulating function |
| DE102016211906A1 (en) * | 2016-06-30 | 2018-01-04 | Aktiebolaget Skf | Cage for crankshaft bearing |
| JP7071801B2 (en) * | 2017-03-03 | 2022-05-19 | Ntn株式会社 | Rolling bearings and bearing structures with them |
| US10487877B2 (en) * | 2018-03-01 | 2019-11-26 | Schaeffler Technologies AG & Co. KG | Bearing cage including hydrodynamic feature |
| JP7247598B2 (en) * | 2019-01-21 | 2023-03-29 | 株式会社ジェイテクト | rolling bearing device |
| KR102186044B1 (en) * | 2019-04-19 | 2020-12-04 | (주)웰테크 | laundry hanger |
| US11365762B2 (en) * | 2020-11-16 | 2022-06-21 | Schaeffler Technologies AG & Co. KG | High speed bearing cage |
| DE102021129190A1 (en) | 2021-11-10 | 2023-05-11 | Schaeffler Technologies AG & Co. KG | Bearing cage for cylindrical rollers and cylindrical roller bearings with such a bearing cage |
| JP2024112650A (en) * | 2023-02-08 | 2024-08-21 | 日本精工株式会社 | Rolling bearings and machine tool spindle units |
| CN117759630B (en) * | 2024-02-22 | 2024-04-26 | 上海骋海新能源科技有限公司 | Ball bearing |
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| CN101737428A (en) * | 2009-12-24 | 2010-06-16 | 常熟长城轴承有限公司 | Bearing cage structure |
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| DE8914085U1 (en) | 1989-11-29 | 1990-01-04 | SKF GmbH, 8720 Schweinfurt | Composite cage |
| JPH1122737A (en) * | 1997-07-02 | 1999-01-26 | Hitachi Constr Mach Co Ltd | Retainer for roll bearing |
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| JP3707553B2 (en) * | 2001-08-01 | 2005-10-19 | 日本精工株式会社 | Angular contact ball bearings for machine tools |
| JP2005061483A (en) * | 2003-08-08 | 2005-03-10 | Nsk Ltd | Cage made out of synthetic resin for roller bearing, and roller bearing |
| JP2005090657A (en) * | 2003-09-18 | 2005-04-07 | Nsk Ltd | Retainer for rolling bearing and rolling bearing having the built-in retainer |
| JP5098564B2 (en) * | 2006-10-19 | 2012-12-12 | 日本精工株式会社 | Cylindrical roller bearings and spindles for machine tools |
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| DE102008025766A1 (en) * | 2008-05-29 | 2009-12-03 | Schaeffler Kg | Rolling bearing cage |
| JP2010090974A (en) * | 2008-10-07 | 2010-04-22 | Ntn Corp | Retainer for rolling bearing and rolling bearing |
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| JP5499814B2 (en) * | 2010-03-23 | 2014-05-21 | 日本精工株式会社 | Rolling bearing |
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2011
- 2011-08-03 KR KR1020127022567A patent/KR101368100B1/en active IP Right Grant
- 2011-08-03 CN CN2011800025319A patent/CN102483092A/en active Pending
- 2011-08-03 WO PCT/JP2011/067778 patent/WO2012023437A1/en active Application Filing
- 2011-08-03 CN CN201510041035.4A patent/CN104747599B/en active Active
- 2011-08-03 JP JP2012529563A patent/JP6016632B2/en not_active Expired - Fee Related
- 2011-08-03 DE DE112011102719.2T patent/DE112011102719B4/en active Active
- 2011-08-04 TW TW100127784A patent/TWI481786B/en not_active IP Right Cessation
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2016
- 2016-02-17 JP JP2016028221A patent/JP2016128720A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737428A (en) * | 2009-12-24 | 2010-06-16 | 常熟长城轴承有限公司 | Bearing cage structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2012023437A1 (en) | 2013-10-28 |
| KR20120106902A (en) | 2012-09-26 |
| WO2012023437A1 (en) | 2012-02-23 |
| JP2016128720A (en) | 2016-07-14 |
| TW201217665A (en) | 2012-05-01 |
| DE112011102719T5 (en) | 2013-06-27 |
| DE112011102719B4 (en) | 2022-08-25 |
| CN102483092A (en) | 2012-05-30 |
| TWI481786B (en) | 2015-04-21 |
| KR101368100B1 (en) | 2014-02-27 |
| JP6016632B2 (en) | 2016-10-26 |
| CN104747599A (en) | 2015-07-01 |
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