CN102109009A - Thrust roller four-point ball turntable bearing - Google Patents
Thrust roller four-point ball turntable bearing Download PDFInfo
- Publication number
- CN102109009A CN102109009A CN2011100740040A CN201110074004A CN102109009A CN 102109009 A CN102109009 A CN 102109009A CN 2011100740040 A CN2011100740040 A CN 2011100740040A CN 201110074004 A CN201110074004 A CN 201110074004A CN 102109009 A CN102109009 A CN 102109009A
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- retainer
- inner ring
- outer ring
- ball
- thrust roller
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Abstract
The invention discloses a thrust roller four-point ball turntable bearing which comprises an inner ring (3), an outer ring (2), a steel ball (6), a thrust roller retainer (7) and a ball retainer/ isolating block (8), wherein the inner ring is sleeved in the outer ring; a step surface on the upper part of the inner ring is positioned on the end surface of the outer ring; roller paths and channels are formed on the end surfaces of the inner ring and the outer ring, the inner diameter part of the outer ring and the outer diameter part of the inner ring respectively; the thrust roller retainer is arranged in the roller path of the end surface, and a roller is mounted in a pocket hole of the retainer; and the ball retainer/ isolating block is arranged in the channel, and a steel ball is arranged in the pocket hole of the retainer, or a row of steel balls are separated by the insolating block. The thrust roller four-point ball turntable bearing provided by the invention effectively improves the rotation flexibility, increases the bearing capacity of the axial load has characteristics of compact structure, flexibility, large axial bearing capacity and high accuracy, occupies a small space, is convenient to use and convenient to install and stable in operation. The angular position of the rotation can be detected in real time, a fully-closed ring system is formed, the rotation angle (or arc length) of the rotation can be controlled, and the requirement on high-accuracy measurement and control of rotation is met.
Description
Technical field
The invention belongs to technical field of bearings, what relate generally to is 4 ball slewing bearings of a kind of thrust roller.
Technical background
Known four point touching ball slewing bearing mainly is made up of inner ring, outer ring, steel ball, retainer/spacing block and stopper, inner ring is enclosed within the inside, outer ring, be provided with retainer/spacing block in the raceway that between inner ring and both sides, outer ring, forms, in the ball pocket of retainer, be provided with steel ball, or row's steel ball is set in raceway to be placed at interval with spacing block, and stopper is inserted into inner ring (or outer ring) the inside.Because the bearing of this structure is single four penalty kicks, so its axial carrying capacity is less, and the load of traverse platform maximum is axial.In order to improve axial carrying capacity, the measure of taking at present is the volume that strengthens turntable bearing, increases row's number of steel ball in raceway, generally reaches three row's steel balls, and the drawback of bringing thus is: bearing takes up room greatly, has increased the size of pivoting support unit.
In addition, this turntable bearing does not possess the observing and controlling function, for the field of employment that needs precision rotating control, can not satisfy the requirement of the rotation angle (or radian) of accurate observing and controlling field of employment, can not know the position, angle at revolution place in real time, cause the product that processes overproof, can not satisfy required precision.
Summary of the invention
One of purpose of the present invention provides 4 ball slewing bearings of a kind of thrust roller.Increase axial carrying capacity, have compact structure, it is little to take up room, easy-to-use, and running is steady, and flexibly, axial carrying capacity is big, the precision height.
Two of purpose of the present invention is by the real-time detection to the turntable bearing rotational position, knows the position, angle at revolution place in real time, controls rotating angle of swing (or arc length), satisfies rotating highi degree of accuracy TT﹠C requirement.
The present invention realizes that the technological scheme that one of above-mentioned purpose is taked is: 4 ball slewing bearings of a kind of thrust roller, mainly form by inner ring, outer ring, steel ball, roller, thrust roller cage, ball retainer and stopper, inner ring is enclosed within the inside, outer ring, the step surface on inner ring top is positioned on the cycle surface, form raceway and raceway groove respectively at end face and outer ring internal diameter, the inner ring external diameter position of inner ring and outer ring thus, the thrust roller cage is set in the end face raceway, and in the pocket hole of this retainer, roller is installed; Ball retainer/spacing block is set in raceway groove, and in the pocket hole of this retainer, steel ball is installed or be provided with one row steel ball place at interval with spacing block.
The present invention realizes that the technological scheme that two of above-mentioned purpose is taked is: on the outer ring of the turntable bearing that mainly is made of inner ring, outer ring, steel ball, roller, thrust roller cage, ball retainer and stopper or inner ring Detecting element is set---steel grid chi, at least be provided with one with upper sensor near the outer peripheral surface of Detecting element relatively, this sensor is connected with control unit by datawire.
The present invention is owing to be provided with the end face raceway and the steel ball raceway groove is two-way raceway, by in two raceways maintenance being set
Frame and rolling element have effectively improved flexibility of revolution, have increased the ability to bear of thrust load.The raising of axial carrying capacity can make the machining range of main frame (lathe turntable) enlarge, and the platform good rigidly improves the main frame added value, increases the economic benefit of main frame.This scheme has compact structure, and it is little to take up room, easy-to-use, running is steady, and flexibly, axial carrying capacity is big, the precision height, adopt bolt to connect and be convenient to install, owing to be provided with detection device, by real-time detection to the turntable bearing rotational position, know the position, angle at revolution place in real time, form closed loop system, control rotating angle of swing (or arc length), satisfy rotating highi degree of accuracy TT﹠C requirement.And can be at the immersion oil environment, grease environment, main frame have the environment of vibration, and proper functioning under the environment of magnetic disturbance is arranged.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model detection device at the inner ring external diameter.
Fig. 3 is that the utility model detection device is at inner ring internal diameter structural representation.
Fig. 4 is that the utility model detection device is at outer ring external diameter structural representation.
Among the figure: 1, steel grid chi; 2, outer ring; 3, inner ring; 4, roller; 5, stopper; 6, steel ball; 7, thrust roller cage; 8, ball retainer/isolation.
Embodiment
In conjunction with the accompanying drawings, it is as follows to provide embodiment of the present utility model:
As shown in Figure 1: 4 ball slewing bearings of a kind of thrust roller mainly are made up of inner ring 3, outer ring 2, steel ball 6, roller 4, thrust roller cage 7, ball retainer/spacing block 8 and stopper 5, inner ring is enclosed within the inside, outer ring, the step surface on inner ring top is positioned on the cycle surface, forms end face raceway and steel ball raceway groove thus between inner ring and outer ring.In the end face raceway, be provided with thrust roller cage 7, and in the pocket hole of this retainer, roller 4 be installed.The setting of thrust roller cage 7 can be set to an integral cage respectively or be divided into several sections retainer according to the design needs, in each pocket hole of retainer roller is installed all, and purpose is in order further to increase the ability to bear of thrust load.Be provided with ball retainer/spacing block in steel ball rolling channel, and row's steel ball be installed in the pocket hole of this retainer or placed steel ball and spacing block at interval with spacing block, be provided with oil hole on inner ring 3 or outer ring 2, stopper 5 is inserted in inner ring or the outer ring.
Want the turntable of accurate observing and controlling rotation angle that detection information is provided in order to give, inner ring or outer ring are provided with Detecting element 1, present embodiment is that the external diameter at inner ring is socketed with Detecting element (as shown in Figure 1), this monitoring element is a ring structure, it can be the magnetic railings ruler ring, also can be steel grid chi ring, can also be grating chi ring.Preferably adopt steel material to make, be carved with small grid above, be steel grid chi ring structure.Steel grid chi ring requires lower to working environment, can be at the immersion oil environment, and grease environment, proper functioning under the environment such as main frame vibration environment.Detecting element can be sleeved on outer ring 2 or the inner ring 4, also can be divided into several sections installations.At least be provided with one during use near the outer peripheral surface of relative Detecting element 1 with upper sensor, be fixedly supported on apart from Detecting element 1 by fixing frame and be the position of 0.1mm～0.2mm, be connected with control unit by datawire.Under the drive of power-transmitting unit, under the effect of axial working load on the turntable, 4 ball slewing bearing smooth operations of thrust roller, this Detecting element and turntable shaft
Hold synchronous rotation, combined sensor sends the signal that detects to control unit, and on corresponding display device, demonstrate the angle (or radian) that current turntable forwards to, and by control unit traverse platform is controlled, giving needs the turntable of accurate observing and controlling rotation angle that advanced technical specifications are provided.
Claims (4)
1. 4 ball slewing bearings of a thrust roller, comprise inner ring (3), outer ring (2), steel ball (6), ball retainer/spacing block (8), inner ring is enclosed within the inside, outer ring, be provided with ball retainer/spacing block (8) in the raceway groove that between the inner ring outside and inboard, outer ring, forms, and row's steel ball is installed in the pocket hole of this retainer or is placed steel ball at interval with spacing block, it is characterized in that: the step surface on described inner ring (2) top is positioned on the end face of outer ring (3), end face in inner ring and outer ring forms the thrust raceway thus, thrust roller cage (7) is housed in the thrust raceway, and in the pocket hole of this retainer, roller (4) is installed.
2. 4 ball slewing bearings of thrust roller according to claim 1 is characterized in that: described thrust roller cage (7) can be as a whole, also can be to be divided into several sections retainer, and roller (4) all is installed in the pocket hole of thrust roller cage.
3. 4 ball slewing bearings of thrust roller according to claim 1, it is characterized in that: on described inner ring (3) and outer ring (2), Detecting element (1) is set, at least be provided with one with upper sensor near the outer peripheral surface of Detecting element relatively, this sensor is connected with control unit by datawire.
4. 4 ball slewing bearings of thrust roller according to claim 1 is characterized in that: be provided with oil hole, stopper (5) on described inner ring (3) or outer ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100740040A CN102109009A (en) | 2011-03-27 | 2011-03-27 | Thrust roller four-point ball turntable bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100740040A CN102109009A (en) | 2011-03-27 | 2011-03-27 | Thrust roller four-point ball turntable bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102109009A true CN102109009A (en) | 2011-06-29 |
Family
ID=44173256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100740040A Pending CN102109009A (en) | 2011-03-27 | 2011-03-27 | Thrust roller four-point ball turntable bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102109009A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131787A (en) * | 2021-04-19 | 2021-07-16 | 吉林大学 | Driving mechanism of tracking rotary table for light and small laser communication |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422697A (en) * | 1980-09-10 | 1983-12-27 | Ina Walzlager Schaeffler Kg | Rotary roller bearing connection with a free center |
| DE19812253A1 (en) * | 1998-03-20 | 1999-10-07 | Schaeffler Waelzlager Ohg | Roller bearing combined with free-run coupling, particularly radially grooved ball bearing |
| CN2607464Y (en) * | 2003-04-02 | 2004-03-24 | 洛阳轴承集团有限公司 | Rotary disc rolling bearing |
| EP1852618A2 (en) * | 2006-05-04 | 2007-11-07 | IMO Momentenlager GmbH | Rolling bearing device |
| CN200993165Y (en) * | 2006-12-19 | 2007-12-19 | 瓦房店轴承集团有限责任公司 | Isolating block for four-point contact balltype turntable bearing |
| CN101699085A (en) * | 2009-11-04 | 2010-04-28 | 洛阳轴研科技股份有限公司 | Turntable bearing for large-size celestial observation device |
| CN101713434A (en) * | 2009-08-10 | 2010-05-26 | 中国科学院长春光学精密机械与物理研究所 | Radial self-positioning double row reducing ball turntable bearing for large-scale precise rotating platform |
| CN101819421A (en) * | 2010-03-12 | 2010-09-01 | 洛阳世必爱特种轴承有限公司 | Angular displacement measuring and controlling device for revolving platform |
| CN202031980U (en) * | 2011-03-27 | 2011-11-09 | 洛阳世必爱特种轴承有限公司 | Thrust roller four-point ball turntable bearing |
-
2011
- 2011-03-27 CN CN2011100740040A patent/CN102109009A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422697A (en) * | 1980-09-10 | 1983-12-27 | Ina Walzlager Schaeffler Kg | Rotary roller bearing connection with a free center |
| DE19812253A1 (en) * | 1998-03-20 | 1999-10-07 | Schaeffler Waelzlager Ohg | Roller bearing combined with free-run coupling, particularly radially grooved ball bearing |
| CN2607464Y (en) * | 2003-04-02 | 2004-03-24 | 洛阳轴承集团有限公司 | Rotary disc rolling bearing |
| EP1852618A2 (en) * | 2006-05-04 | 2007-11-07 | IMO Momentenlager GmbH | Rolling bearing device |
| CN200993165Y (en) * | 2006-12-19 | 2007-12-19 | 瓦房店轴承集团有限责任公司 | Isolating block for four-point contact balltype turntable bearing |
| CN101713434A (en) * | 2009-08-10 | 2010-05-26 | 中国科学院长春光学精密机械与物理研究所 | Radial self-positioning double row reducing ball turntable bearing for large-scale precise rotating platform |
| CN101699085A (en) * | 2009-11-04 | 2010-04-28 | 洛阳轴研科技股份有限公司 | Turntable bearing for large-size celestial observation device |
| CN101819421A (en) * | 2010-03-12 | 2010-09-01 | 洛阳世必爱特种轴承有限公司 | Angular displacement measuring and controlling device for revolving platform |
| CN202031980U (en) * | 2011-03-27 | 2011-11-09 | 洛阳世必爱特种轴承有限公司 | Thrust roller four-point ball turntable bearing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131787A (en) * | 2021-04-19 | 2021-07-16 | 吉林大学 | Driving mechanism of tracking rotary table for light and small laser communication |
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Application publication date: 20110629 |