CN204239651U - Ball-screw apparatus - Google Patents
Ball-screw apparatus Download PDFInfo
- Publication number
- CN204239651U CN204239651U CN201420323215.2U CN201420323215U CN204239651U CN 204239651 U CN204239651 U CN 204239651U CN 201420323215 U CN201420323215 U CN 201420323215U CN 204239651 U CN204239651 U CN 204239651U
- Authority
- CN
- China
- Prior art keywords
- ball
- nut
- lead screw
- screw shaft
- screw apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The purpose of this utility model is to provide a kind of ball-screw apparatus, by making the ball Infinite Cyclic between the thread groove of the nut side being assembled to ball-screw apparatus and the thread groove of lead screw shaft side, and reduces component parts quantity, and realizes small-sized and save space.Especially, its object is to, by arranging peripheral passage (end reverser) in the both ends of the surface of nut, and the outside dimension ground of nut can not be increased, small and exquisite ball-screw apparatus is provided.As the formation of the ball-screw apparatus of end reverser formula, the outer circumferential face of lead screw shaft (2) has nut (1) and is formed the rolling path of ball (3) by the spiral chute (2a) of lead screw shaft and the spiral chute (1a) of nut.The axial two end part of nut (1) are formed the axially extended penetration hole (13) along nut (1), form ball return flow path by the end reverser (5) be connected with the two ends of this penetration hole, form the Infinite Cyclic path of ball (3).
Description
Technical field
The utility model relates to the ball-screw apparatus be used in work mechanism and injection moulding machine.
Background technique
As existing ball-screw apparatus, such as, there are the ball-screw apparatus of ball tube-inserted type as described in Patent Document 1.The ball-recirculation intubate of this ball-screw apparatus is configured in the outer diameter face of nut, and the structure exposed by giving prominence to from the side of nut and configuring.
Patent documentation 1: No. 2003-269567, Japanese Patent Publication
Model utility content
The purpose of this utility model is, by making the ball Infinite Cyclic between the thread groove of the nut side being assembled to ball-screw apparatus and the thread groove of lead screw shaft side, and reduces component parts quantity, and realizes small-sized and save space.Especially, its object is to, by arranging peripheral passage (end reverser) in the both ends of the surface of nut, and the outside dimension ground of nut can not be increased, a kind of small and exquisite ball-screw apparatus is provided.
The utility model in order to solve above-mentioned problem, and provides following scheme.
(1) an end reverser formula ball-screw apparatus, has: be formed with spiral fluted nut at inner peripheral surface; Outer circumferential face is formed spiral fluted lead screw shaft; Be configured in the ball between the raceway that formed by the spiral chute of nut and the spiral chute of lead screw shaft; The ball return flow path of starting point is back to the terminal making ball from raceway, make described nut relative to lead screw shaft relative movement by making ball roll in described raceway, it is characterized in that, described ball return flow path by being formed on described nut and the ball current return circuit run through vertically and the crooked route be formed on the end reverser that is connected with the two ends of this ball current return circuit, and is formed in the inside of nut.
Accompanying drawing explanation
Fig. 1 is the sectional view following loop-type ball-screw apparatus of mode of execution of the present utility model.
Description of reference numerals
1 nut
The spiral chute of 1a nut
11 flanges
13 penetration holes becoming ball current return circuit
The recess that 15 end reversers are installed
2 lead screw shaft
The spiral chute of 2a lead screw shaft
3 balls
4 Sealings
5 end reversers
51 crooked routes
Embodiment
Fig. 1 is the three-dimensional cutaway view of the ball-screw apparatus of present embodiment.As shown in Figure 1, the ball-screw apparatus of present embodiment is made up of the Sealing 4 of nut 1, lead screw shaft 2, ball 3, ring-type and end reverser (end deflector) 5.The inner peripheral surface of nut 1 is formed spiral chute 1a, the outer circumferential face of lead screw shaft 2 is formed spiral chute 2a.Between the raceway formed by the spiral chute 1a of nut 1 and the spiral chute 2a of lead screw shaft 2, be configured with ball 3.Axial one end of nut 1 is formed with flange 11.
Nut 1 is formed the penetration hole 13 extended vertically.On the two end part of the penetration hole 13 of nut 1, be formed with the recess 15 of configuration end reverser 5.That is, the ball return flow path of this ball-screw apparatus is by the ball current return circuit that is made up of penetration hole 13 and the crooked route 51 be formed on the end reverser 5 that is connected with the two ends of this ball current return circuit, and is formed in the inside of nut 1.End reverser 5 uses tangent line to lean forward to raise up the structure of shape.At the axial two ends of nut 1, Sealing 4 is installed.
Claims (1)
1. an end reverser formula ball-screw apparatus, has: be formed with spiral fluted nut at inner peripheral surface; Spiral fluted lead screw shaft is formed at outer circumferential face; Be configured in the ball between the raceway that formed by the spiral chute of nut and the spiral chute of lead screw shaft; The ball return flow path of starting point is back to the terminal making ball from raceway,
Making described nut relative to lead screw shaft relative movement by making ball roll in described raceway, it is characterized in that,
Described ball return flow path by be formed on described nut and the ball current return circuit run through vertically be formed in the tangent line be connected with the two ends of this ball current return circuit and lean forward the crooked route raised up on the end reverser of shape, and be formed in the inside of nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420323215.2U CN204239651U (en) | 2014-06-17 | 2014-06-17 | Ball-screw apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420323215.2U CN204239651U (en) | 2014-06-17 | 2014-06-17 | Ball-screw apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204239651U true CN204239651U (en) | 2015-04-01 |
Family
ID=52769151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420323215.2U Active CN204239651U (en) | 2014-06-17 | 2014-06-17 | Ball-screw apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204239651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773548A (en) * | 2019-01-31 | 2019-05-21 | 安顺虹特滚珠丝杠有限责任公司 | A kind of ball-screw auxiliary structure that positioning accuracy can be improved |
-
2014
- 2014-06-17 CN CN201420323215.2U patent/CN204239651U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773548A (en) * | 2019-01-31 | 2019-05-21 | 安顺虹特滚珠丝杠有限责任公司 | A kind of ball-screw auxiliary structure that positioning accuracy can be improved |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |