CN105587763A - External spherical ball bearing for numerical-control machine tool - Google Patents
External spherical ball bearing for numerical-control machine tool Download PDFInfo
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- CN105587763A CN105587763A CN201410647474.5A CN201410647474A CN105587763A CN 105587763 A CN105587763 A CN 105587763A CN 201410647474 A CN201410647474 A CN 201410647474A CN 105587763 A CN105587763 A CN 105587763A
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- ring
- inner ring
- outer ring
- steel sheet
- bearing
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Abstract
The invention provides an external spherical ball bearing for a numerical-control machine tool. The external spherical ball bearing comprises an outer ring, an inner ring, a rolling ball, a retainer and a sealing structure, wherein the outer ring is provided with an oil slot and an oil hole; the slide slot of the inner ring is provided with symmetrical lubricating slots which are perpendicularly crossed, and lubricating assemblies are embedded into the lubricating slots; a sealing structure comprises a sealing ring and a retainer ring; the sealing ring comprises a steel sheet framework, the upper end of the steel sheet framework is provided with a curling side; the outer ring is provided with an inner ring-shaped sealing slot, and the curling side is embedded into the sealing slot; the other end of the steel sheet framework is provided with a mounting hole in which a ball body is arranged in a freely rotary mode for being held, and one part of the ball body is protruded from the opening of the mounting hole and is in point contact with the inner ring; nitrile rubber covers the steel sheet framework; the outer side of the retainer ring is provided with an electrostatic dust absorption net, and an electrostatic hairbrush; and the electrostatic hairbrush is connected to the outer ring. The bearing can prevent from dust from entering and can prevent the lubricating oil from leaking, so that the long-time lubrication of the bearing is guaranteed, and the service life of the bearing is prolonged.
Description
Technical field
The present invention relates to lathe with bearing manufacturing technology field, relate to specifically a kind of Digit Control Machine Tool ectosphereFace ball bearing.
Background technology
Bearing, is a kind of for determining rotating shaft and other part relative motion positions, plays supporting guiding and doesWith parts, it is in mechanical transmission course, rise fixing and reduce the parts of load coefficient of friction, alsoCan be described as, in the time that other parts produce relative motion each other on axle, be used for reducing power transmission processIn the fixing parts of coefficient of friction and retainer shaft center.
In order to extend the service life of bearing, bearing requires lubricated preferably, needs good preventing dustWater effect, general bearing can be installed dust cap at the two ends of bearing, can prevent that dust and other impurities from enteringBearing inside, prevents bearing rust.
Along with the fast development of China's industry, machine tool increasing, the complexity of machine toolAlso more industry is higher, correspondingly require also more and more higher to connecting the bearing of each mechanism. Accurate digital control machineThe matching used bearing of bed apparatus often may be transported under higher temperature or more high-revolving environmentOK, in this running environment, also just require bearing to have better lubricated, better dust-proof effect, butCommon bearing lubrication, dust-proof effect do not reach requirement at present, common lubricated and dustproof often easily inefficacy,Bearing easily produces fatigue damage, thereby affects the service life of bearing, therefore requires bearing to have betterLubricate and dust-proof effect.
Summary of the invention
The object of the present invention is to provide a kind of Digit Control Machine Tool roller bearing units, to overcome prior artBearing lubrication and dust-proof effect poor, lubricated and anti-while operation under the environment of higher temperature or more speedThe defect that dirt inefficacy, the easy fatigue damage of bearing, service life shorten.
To achieve these goals, the present invention is achieved by the following technical solutions:
A kind of Digit Control Machine Tool roller bearing units, comprises between outer ring, inner ring and inner ring, outer ringBall, retainer and hermetically-sealed construction, described inner ring is fixedly connected with axle;
Described inner ring and outer ring are provided with the chute that ball rolls, and described outer ring arranges around outer ring circumferenceOil groove and oilhole, described oilhole upper end communicates with oil groove, and the cavity between lower end and outer ring, inner ring communicates;The chute of described inner ring offers at upper and lower two ends and two ends, left and right the lubrication groove that symmetrical cross intersects vertically,In described lubrication groove, be inlaid with lubrication assembly, described lubrication assembly and ball contact position are provided with chase typeOil clearance; Described lubrication assembly is by the glass of the polytetrafluoroethylene (PTFE) grease layer near ball surface, centreThe metallic fibrous layer composition of fibrage and internal layer;
Described hermetically-sealed construction, comprises sealing ring and back-up ring, is positioned at the both sides of retainer and ball;
Described sealing ring, comprises steel sheet skeleton, and the upper end of described steel sheet skeleton is provided with crimping, described inOuter ring is provided with interior annular seal groove, in described crimping embedding sealing groove; The other end of described steel sheet skeletonBe provided with installing hole, described installing hole is provided with spheroid, and described spheroid rotates freely and is arranged on installing holeIn, for installing hole clasped and some from installing hole opening part give prominence to and contact with interior punctuating; InstituteState steel sheet skeleton and be coated with acrylonitrile-butadiene rubber;
Described back-up ring, is positioned at the outside of sealing ring, is stuck on the excircle of inner ring, and with outer ring matched in clearance,The arranged outside of described back-up ring has electrostatic precipitation net and electrostatic brush, and described electrostatic brush is connected with outer ring.So design, can pass through the dust of Electrostatic Absorption bearing periphery, prevents that dust from entering, guarantee inner chamberClean, ensure the lubricated of bearing.
As the improvement to technique scheme, on described outer ring, be provided with latch. So design, canTo prevent relatively rotating of outer ring, prevent outer ring wearing and tearing.
As the improvement to technique scheme, the circumference of described inner ring one end is provided with jackscrew, described inCircle is fixed on axle by jackscrew.
Compared with prior art, the invention has the advantages that:
Digit Control Machine Tool roller bearing units of the present invention, inner ring is fixedly mounted on axle by jackscrew, outerOn circle, be provided with latch, can prevent outer ring rotation; Arrange after oil filler point, can add easily glossySliding, make lubricating oil enter to such an extent that go; Inner ring chute and ball contact position are provided with selenodont oil clearance, have strengthenedOil clearance space, has increased the memory space of lubricating oil, makes lubricating oil deposit to such an extent that live, prevent ball heat rise after cardExtremely between Internal and external cycle; Outside inner ring, outer ring, hermetically-sealed construction is set, can prevents the leakage of lubricating oil, protectThe long-time of card bearing lubricated, and extends the service life of bearing; Hermetically-sealed construction be provided with electrostatic precipitation net andElectrostatic brush, can pass through the dust of Electrostatic Absorption bearing periphery, prevents that dust from entering, guarantee inner chamberClean, ensure the lubricated of bearing.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the local structure for amplifying schematic diagram of Fig. 1.
Fig. 3 is the structure for amplifying schematic diagram of lubrication assembly.
Reference numeral: 1-outer ring; 2-inner ring; 3-ball; 4-retainer; 5-oil groove; 6-oilHole; 7-oil clearance; 8-sealing ring; 9-back-up ring; 10-latch; 11-jackscrew; 12-lubrication assembly;13-polytetrafluoroethylene (PTFE) grease layer; 14-glass layer; 15-metallic fibrous layer; 21-steel disc boneFrame; 22-spheroid; 23-acrylonitrile-butadiene rubber; 24-electrostatic precipitation net; 25-electrostatic brush.
Detailed description of the invention
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinateAccompanying drawing, is described in detail below, but the present invention is not limited to this.
Embodiment mono-:
As shown in Figure 1,2 and 3, between outer ring 1 of the present invention, inner ring 2 and inner ring 2, outer ring 1Ball 3, retainer 4 and hermetically-sealed construction, described inner ring 2 is fixedly connected with axle;
Described inner ring 2 is provided with outer ring 1 chute that ball 3 rolls, described outer ring 1 arrange around outsideCircle circumference oil groove 5 and oilhole 6, described oilhole 6 upper ends communicate with oil groove 5, lower end and outer ring 1, inCavity between circle 2 communicates; The chute of described inner ring is offered ten of symmetry at upper and lower two ends and two ends, left and rightThe lubrication groove that word intersects vertically, is inlaid with lubrication assembly 12 in described lubrication groove, described lubrication assembly with rollPearl contact position is provided with the oil clearance 7 of chase type; Described lubrication assembly 12 is by poly-four of close ball surfaceThe glass layer 14 of PVF grease layer 13, centre and the metallic fibrous layer 15 of internal layer form;
Described hermetically-sealed construction, comprises sealing ring 8 and back-up ring 9, is positioned at the both sides of retainer 4 and ball 3;
Described sealing ring 8, comprises steel sheet skeleton 21, and the upper end of described steel sheet skeleton 21 is provided with crimping,Described outer ring 1 is provided with interior annular seal groove, in described crimping embedding sealing groove; Described steel sheet skeleton 21The other end be provided with installing hole, described installing hole is provided with spheroid 22, described spheroid 22 rotates freely groundBe arranged in installing hole, clasped and some is given prominence to and with interior from installing hole opening part for installing holeEnclose 2 contacts; Described steel sheet skeleton 21 inner sides are coated with acrylonitrile-butadiene rubber 23;
Described back-up ring 9, is positioned at the outside of sealing ring 8, is stuck on the excircle of inner ring 2, and between outer ring 1Gap coordinates, and the arranged outside of described back-up ring 9 has electrostatic precipitation net 24 and electrostatic brush 25, described static hairBrush 25 is connected with outer ring 1. So design, can pass through the dust of Electrostatic Absorption bearing periphery, preventsDust enters, and ensures the clean of inner chamber, ensures the lubricated of bearing.
On described outer ring 1, be provided with latch 10. So design, can prevent relatively rotating of outer ring 1,Prevent that outer ring 1 from wearing and tearing.
The circumference of described inner ring 2 one end is provided with jackscrew 11, and described inner ring 2 is fixed on axle by jackscrew 11On.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all at thisWithin the spirit and principle of invention, any amendment of doing, be equal to replacement, improvement etc., all should be included inWithin protection scope of the present invention.
Claims (3)
1. a Digit Control Machine Tool roller bearing units, comprises between outer ring, inner ring and inner ring, outer ringBall, retainer and hermetically-sealed construction, described inner ring is fixedly connected with axle; It is characterized in that:
Described inner ring and outer ring are provided with the chute that ball rolls, and described outer ring arranges around outer ring circumferenceOil groove and oilhole, described oilhole upper end communicates with oil groove, and the cavity between lower end and outer ring, inner ring communicates;The chute of described inner ring offers at upper and lower two ends and two ends, left and right the lubrication groove that symmetrical cross intersects vertically,In described lubrication groove, be inlaid with lubrication assembly, described lubrication assembly and ball contact position are provided with chase typeOil clearance; Described lubrication assembly is by the glass of the polytetrafluoroethylene (PTFE) grease layer near ball surface, centreThe metallic fibrous layer composition of fibrage and internal layer;
Described hermetically-sealed construction, comprises sealing ring and back-up ring, is positioned at the both sides of retainer and ball;
Described sealing ring, comprises steel sheet skeleton, and the upper end of described steel sheet skeleton is provided with crimping, described inOuter ring is provided with interior annular seal groove, in described crimping embedding sealing groove; The other end of described steel sheet skeletonBe provided with installing hole, described installing hole is provided with spheroid, and described spheroid rotates freely and is arranged on installing holeIn, by installing hole is clasped and some is outstanding and contact with interior punctuating from installing hole opening part; InstituteState steel sheet skeleton inner side and be coated with acrylonitrile-butadiene rubber;
Described back-up ring, is positioned at the outside of sealing ring, is stuck on the excircle of inner ring, and with outer ring matched in clearance,The arranged outside of described back-up ring has electrostatic precipitation net and electrostatic brush, and described electrostatic brush is connected with outer ring.
2. Digit Control Machine Tool roller bearing units according to claim 1, is characterized in that: described inOuter ring is provided with latch.
3. Digit Control Machine Tool roller bearing units according to claim 2, is characterized in that: described inThe circumference of inner ring one end is provided with jackscrew, and described inner ring is fixed on axle by jackscrew.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410647474.5A CN105587763A (en) | 2014-11-14 | 2014-11-14 | External spherical ball bearing for numerical-control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410647474.5A CN105587763A (en) | 2014-11-14 | 2014-11-14 | External spherical ball bearing for numerical-control machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105587763A true CN105587763A (en) | 2016-05-18 |
Family
ID=55927584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410647474.5A Pending CN105587763A (en) | 2014-11-14 | 2014-11-14 | External spherical ball bearing for numerical-control machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105587763A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043160A (en) * | 2020-02-19 | 2020-04-21 | 福建福南轴承有限公司 | Lubricating and dustproof structure and method for spherical bearing |
| CN113335900A (en) * | 2021-06-03 | 2021-09-03 | 华能榆社发电有限责任公司 | Coal feeding prevention device for roller bearing of coal conveying belt |
-
2014
- 2014-11-14 CN CN201410647474.5A patent/CN105587763A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043160A (en) * | 2020-02-19 | 2020-04-21 | 福建福南轴承有限公司 | Lubricating and dustproof structure and method for spherical bearing |
| CN111043160B (en) * | 2020-02-19 | 2021-09-03 | 福建福南轴承有限公司 | Lubricating and dustproof structure and method for spherical bearing |
| CN113335900A (en) * | 2021-06-03 | 2021-09-03 | 华能榆社发电有限责任公司 | Coal feeding prevention device for roller bearing of coal conveying belt |
| CN113335900B (en) * | 2021-06-03 | 2023-01-31 | 华能榆社发电有限责任公司 | Coal feeding prevention device for roller bearing of coal conveying belt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160518 |
|
| WD01 | Invention patent application deemed withdrawn after publication |