CN201554833U - Novel ball isolator for ball screw assembly - Google Patents
Novel ball isolator for ball screw assembly Download PDFInfo
- Publication number
- CN201554833U CN201554833U CN200920279419XU CN200920279419U CN201554833U CN 201554833 U CN201554833 U CN 201554833U CN 200920279419X U CN200920279419X U CN 200920279419XU CN 200920279419 U CN200920279419 U CN 200920279419U CN 201554833 U CN201554833 U CN 201554833U
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- China
- Prior art keywords
- ball
- interface end
- elliptic shape
- isolator
- raceway
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- Expired - Fee Related
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Abstract
The utility model discloses a novel ball isolator for a ball screw assembly, which comprises an elliptical input interface end, an elliptical output interface end, a cross pin shaft and a pin shaft locking shaft sleeve. The ball isolator is arranged in a ball cyclic raceway in use and is characterized in that the ball isolator is embedded in the space between balls; and the balls are arranged in sequence to form an elastic chain rolling body and are arranged in a screw raceway, a nut internal thread raceway and a reverse cyclic raceway. The ball isolator for the ball screw assembly can enable the ball screw assembly to run in a raceway, particularly a bent raceway, so that the collision and the friction are not easily produced between the two balls, and particularly, a ball chain is smoother during the cyclic process. Therefore, the ball screw assembly is characterized by no overheating phenomenon, increase of accuracy, low noise, stable movement and long service life.
Description
Technical field:
The utility model relates to the precision mechanical transmission technology.
Background technique:
Ball screw pair is the key feature that lathe and other machines are realized precision mechanical transmission, and the Performance And Reliability of ball screw pair is directly determining the lathe overall performance.Traditional ball screw pair structure composition mainly contains: lead screw shaft, nut, ball and ball reversing device.The internal thread raceway of lead screw shaft raceway and nut and ball reversing device are formed closed circulation raceway jointly, thereby make ball can realize closed circulation.The fluidity of motion of ball chain has directly determined the ball screw adjutant to rotatablely move to be converted to straight line motion or straight line motion has been converted to the quality that rotatablely moves.The error of leading screw and nut rolling way makes ball that mutual friction mutually and collision easily take place at the volley in actual production, makes the friction torque of ball screw pair not steady, unstable properties; Simultaneously, the collision between ball also makes ball screw pair produce noise, and transmission efficiency reduces, the working life of having reduced ball screw pair.And when using present existing ball isolator, when ball ran to bend, ball and isolator produced bigger friction, had slackened the effect of ball isolator.
The model utility content:
The utility model overcomes the existing deficiency of existing ball screw pair ball-recirculation mode, a kind of friction and the collision that can lower between the ball is provided, and can have made ball chain circuit new pattern rolling ball lead screw pair ball isolator more glibly in the bending raceway.
The technological scheme that the utility model patent solves its technical problem is: a kind of new pattern rolling ball lead screw pair ball isolator, mainly comprise elastic elliptic shape input interface end, cross bearing pin, elastic elliptic shape output interface end and lock clasp axle sleeve, described elastic elliptic shape input interface end links to each other by middle cross bearing pin with elastic elliptic shape output interface end, and the lock clasp axle sleeve is locked to the cross bearing pin; Elastic elliptic shape input interface end and elastic elliptic shape output interface end and ball keep in touch; The ball isolator places between the ball successively, forms the resilient balls chain, and described elastic elliptic shape input interface end and elastic elliptic shape output interface end inboard all are equipped with oil storage chamber, described oil storage chamber stored lubricant oil.
The difference of this scheme is that universal joint makes ball chain when bend moves, and has reduced the friction between ball and isolator, ball chain and the reverser; The resilient balls isolator makes the gap homogenization between the ball, thereby has improved the fluency of ball chain operation.
Described elastic elliptic shape interface shape plays guide function to the motion of ball; Can store lubricant oil at the inner oil storage chamber that is provided with of elastic elliptic shape interface, improve the lubrication effect of ball chain, described universal joint is a spring steel; Described elastic elliptic shape interface is a rubber.
Its useful benefit is: overcome the existing deficiency of existing ball screw pair ball-recirculation mode, a kind of friction and the collision that can lower between the ball is provided, and can make ball chain circuit ball interrupter more glibly in the bending raceway.
Description of drawings:
Fig. 1 is a ball screw pair ball isolator assembling schematic representation.
Fig. 2 is the structural representation of ball isolator.
Among the figure: 1 lead screw shaft, 2 balls, 3 ball isolators, 4 nuts, 5 elastic elliptic shape input interface ends, 6 cross bearing pins, 7 elastic elliptic shape output interface ends, 8 lock clasp axle sleeves, 9 oil storage chambers.
Embodiment
Below in conjunction with Figure of description the utility model low noise ball screw is described further.
The assembling schematic representation of ball screw pair ball isolator as shown in Figure 1, ball 2 are distributed in the leading screw raceway that lead screw shaft 1 and nut 4 form, and ball isolator 3 is between ball 2, thereby have formed the resilient balls chain.
The working principle of ball screw pair: lead screw shaft 1 is under the driving of rotary driving motor, and generation rotatablely moves, and drives the resilient balls chain of being made up of ball and ball isolator simultaneously; Resilient balls chain drive nut is simultaneously done straight line motion, thereby realization becomes the process of Precision Linear Moving or straight line motion is become the process that precision rotatablely moves by rotatablely moving.
The structural representation of ball isolator as shown in Figure 2, ball isolator comprise elastic elliptic shape input interface end 5, cross bearing pin 6, elastic elliptic shape output interface end 7 and lock clasp axle sleeve 8.Elastic elliptic shape input interface end 5 links to each other by middle cross bearing pin 6 with elastic elliptic shape output interface end 7, and 8 pairs of cross bearing pins 6 of lock clasp axle sleeve are locked.
Above-mentioned elastic elliptic shape input interface end 5 all is equipped with oil storage chamber 9 with elastic elliptic shape output interface end 7 inboards, and above-mentioned oil storage chamber 9 can be stored lubricant oil.Above-mentioned two elastic elliptic interfaces are rubber material.Above-mentioned elastic elliptic shape input interface end 5 contacts with ball with elastic elliptic shape output interface end 7, when ball chain is passed through the bent tube section of reverser, the rotation that above-mentioned elastic elliptic shape input interface end 5 and elastic elliptic shape output interface end 7 can produce several angle, thereby alleviated the friction between ball and the ball isolator, made the more smooth and easy circulation of ball.
Claims (2)
1. new pattern rolling ball lead screw pair ball isolator, mainly comprise elastic elliptic shape input interface end, cross bearing pin, elastic elliptic shape output interface end and lock clasp axle sleeve, it is characterized in that: described elastic elliptic shape input interface end links to each other by middle cross bearing pin with elastic elliptic shape output interface end, and the lock clasp axle sleeve is locked to the cross bearing pin; Elastic elliptic shape input interface end and elastic elliptic shape output interface end and ball keep in touch; The ball isolator places between the ball successively, forms the resilient balls chain, and described elastic elliptic shape input interface end and elastic elliptic shape output interface end inboard all are equipped with oil storage chamber, described oil storage chamber stored lubricant oil.
2. new pattern rolling ball lead screw pair ball isolator according to claim 1 is characterized in that: described elastic elliptic shape input interface end and elastic elliptic shape output interface end are the rubber interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920279419XU CN201554833U (en) | 2009-11-17 | 2009-11-17 | Novel ball isolator for ball screw assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920279419XU CN201554833U (en) | 2009-11-17 | 2009-11-17 | Novel ball isolator for ball screw assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201554833U true CN201554833U (en) | 2010-08-18 |
Family
ID=42614515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920279419XU Expired - Fee Related CN201554833U (en) | 2009-11-17 | 2009-11-17 | Novel ball isolator for ball screw assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201554833U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062187A (en) * | 2009-11-17 | 2011-05-18 | 姜洪奎 | Novel ball isolator of ball screw pair |
| CN102530501A (en) * | 2011-01-01 | 2012-07-04 | 孙长顺 | Cantilever-type transportation method |
| CN103375558A (en) * | 2012-04-27 | 2013-10-30 | 黑田精工株式会社 | Ball screw with an improved end deflector |
-
2009
- 2009-11-17 CN CN200920279419XU patent/CN201554833U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062187A (en) * | 2009-11-17 | 2011-05-18 | 姜洪奎 | Novel ball isolator of ball screw pair |
| CN102530501A (en) * | 2011-01-01 | 2012-07-04 | 孙长顺 | Cantilever-type transportation method |
| CN103375558A (en) * | 2012-04-27 | 2013-10-30 | 黑田精工株式会社 | Ball screw with an improved end deflector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20101117 |