CN118066267A - Reflux channel structure of ball screw - Google Patents
Reflux channel structure of ball screw Download PDFInfo
- Publication number
- CN118066267A CN118066267A CN202211411715.7A CN202211411715A CN118066267A CN 118066267 A CN118066267 A CN 118066267A CN 202211411715 A CN202211411715 A CN 202211411715A CN 118066267 A CN118066267 A CN 118066267A
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- Prior art keywords
- return
- spiral
- ball screw
- nut
- rolling groove
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Links
- 238000010992 reflux Methods 0.000 title description 3
- 238000005096 rolling process Methods 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 238000011161 development Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
A return channel structure of a ball screw, the ball screw comprising: the device comprises a screw, a nut, two circulators, a plurality of balls and a return pipe, wherein the rod body of the screw is provided with a spiral groove, two ends of the nut are respectively combined with the circulators, the inner wall of a through hole in the center of the nut is provided with a spiral first rolling groove, a return channel penetrating through two ends of the nut is arranged on the outer side of the through hole, the inner pipe part of the return pipe is protruded with a plurality of spiral lines, the spiral lines are arranged in an odd number which cannot be removed completely, and when the return pipe is arranged in the return channel in a penetrating mode, the balls which do circulation operation through the return channel can be driven by the spiral lines to generate lateral overturning of a specific angle when passing through the return pipe.
Description
Technical Field
The present invention relates to a ball screw, and more particularly, to a ball screw with a long service life and capable of preventing noise or noise.
Background
According to the present invention, as shown in fig. 7, a ball screw 60 includes: the screw rod 61, a nut 62, two circulators 63 and a plurality of balls 64, wherein the shaft of the screw rod 61 is provided with a spiral groove 611, two ends of the nut 62 are respectively combined with one of the circulators 63, the inner wall of the through hole in the center of the nut 62 is provided with a spiral first rolling groove 621, the outer side of the through hole is provided with a backflow channel 622 penetrating through two ends of the nut 62, the first rolling groove 621 and the backflow channel 622 are connected by a second rolling groove 631 on the circulator 63, and the balls 64 arranged between the spiral groove 611 and the first rolling groove 621 can smoothly circulate on the ball screw rod 60.
However, the conventional structure as described above still has the following problems in practical application: the balls 64 only push and advance one by one along the running direction during operation of the ball screw 60, but cannot turn sideways under the influence of the return channel 622 during the no-load process of the return, so that the balls 64 gradually wear out into an elliptical shape (as shown in fig. 8) due to the fact that the loads are concentrated at the same point, and thus the stability during operation of the balls is seriously damaged, the service life of the balls is greatly shortened, and noise disturbing people is generated.
The present inventors have thought to have devised the idea of creating, and have made many studies and test sample experiments, and many modifications, based on years of experience, to develop the present invention.
Disclosure of Invention
The technical problem to be solved is as follows:
The existing ball screw is not durable, and can generate noise during operation, which is a technical problem to be solved.
Technical characteristics of solving the problems:
The return channel structure of the ball screw of the invention, the ball screw includes: the device comprises a screw, a nut, two circulators, a plurality of balls and a return pipe, wherein the rod body of the screw is provided with spiral grooves, two ends of the nut are respectively combined with the circulators, the inner wall of a through hole in the center of the nut is provided with a spiral first rolling groove, the outer side of the through hole is provided with a return channel penetrating through two ends of the nut, the first rolling groove is connected with the return channel through a second rolling groove on the circulator, the balls arranged between the spiral grooves and the first rolling groove can smoothly circulate on the ball screw, the inner pipe part of the return pipe is protruded with a plurality of spiral lines, the spiral lines are arranged in an odd number which cannot be divided, and when the return pipe penetrates through the return channel, the balls which circulate through the return channel can be driven by the spiral lines to generate lateral overturning of a specific angle when passing through the return pipe; thus, the return passage structure of the ball screw can be constructed.
As a further development of the invention, the return tube is an abrasion-resistant plastic tube.
As a further development of the invention, three of said spiral threads are provided in the inner tube portion of said return tube.
As a further development of the invention, five of said spiral threads are provided in the inner tube portion of said return tube.
As a further development of the invention, seven of said spiral threads are provided in the inner tube portion of the return tube.
Efficacy against prior art:
According to the return channel structure of the ball screw, when the ball is in a no-load state of running on the return pipe, the ball is driven by the spiral threads and guided to actively generate lateral overturning at a specific angle, so that the ball is not always stressed at a specific position (single point) when the ball flows back between the spiral groove and the first rolling groove and is loaded, the ball is prevented from being deformed from a position where the ball is always stressed, the service life of the ball screw is effectively prolonged, the ball screw is prevented from generating noise which disturbs the ball screw during running, and the ball is prevented from being turned back to the original position after being laterally overturned by using the design that the spiral threads are arranged in an odd number which cannot be divided, or repeated stress of sequential circulation is generated at specific upper and lower points or upper, lower, left and right points.
Drawings
Fig. 1 is a perspective combined view of the present invention.
Fig. 2 is an exploded perspective view of the present invention.
Figure 3 is a cross-sectional view of the return tube of the present invention.
Fig. 4 is a view showing an operation state of the ball screw according to the present invention.
Fig. 5 is a view showing a state in which the ball of the present invention circulates on the ball screw.
Fig. 6 is a schematic diagram of the motion of the ball (shown only in single form) in the return tube driven by the helical thread to turn sideways.
Fig. 7 is a conventional structure diagram.
Fig. 8 is a state diagram of deformation of a conventional ball.
Symbol description:
The invention comprises the following steps:
Screw- -10 spiral groove- -11
Nut-20 through-hole-21
First rolling groove-22 return flow path-23
Circulator- -30 second rolling groove- -31
Ball-40
Reflux tube-50 spiral-51
The prior art comprises the following parts:
Ball screw-60 screw-61
Spiral groove-611 nut-62
First rolling groove-621 return channel-622
Circulator- -63 second rolling groove- -631
Ball-64
Detailed Description
For a further understanding and appreciation of the objects, features, and advantages of the present invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings, which are briefly summarized below:
Generally, according to the present invention, as shown in fig. 1 to 5, the ball screw comprises: the screw rod 10, a nut 20, two circulators 30, a plurality of balls 40 and a return pipe 50, wherein the shaft of the screw rod 10 is provided with a spiral groove 11, two ends of the nut 20 are respectively combined with one circulator 30, the inner wall of a through hole 21 in the center of the nut 20 is provided with a spiral first rolling groove 22, the outer side of the through hole 21 is provided with a return channel 23 penetrating two ends of the nut 20, the second rolling groove 31 on the circulator 30 is used for connecting the first rolling groove 22 and the return channel 23, the balls 40 arranged between the spiral groove 11 and the first rolling groove 22 can smoothly circulate on the ball screw rod, the inner pipe part of the return pipe 50 is protruded with a plurality of spiral grooves 51, the spiral grooves 51 are arranged in an odd number which cannot be divided, when the return pipe 50 is arranged in the return channel 23 in a penetrating way, the balls 40 circulating through the return channel 23 can be driven by the spiral grooves 51 to turn sideways by the spiral grooves 51 to generate a specific angle when passing through the return pipe 50 (simultaneously shown in fig. 6).
The present invention provides a return flow path structure of a ball screw, wherein the return pipe 50 is a wear-resistant plastic pipe.
The invention provides a return channel structure of a ball screw, wherein three spiral threads 51 are arranged in an inner tube part of a return tube 50.
The invention provides a return channel structure of a ball screw, wherein five spiral threads 51 are arranged in an inner tube part of a return tube 50.
The invention provides a return channel structure of a ball screw, wherein seven spiral threads 51 are arranged in an inner tube part of a return tube 50.
Through the above structure, when the ball 40 is in the no-load state of the return pipe 50, the ball 40 is driven by the spiral thread 51 to guide and actively turn sideways at a specific angle (as shown in fig. 6), so that the ball 40 is returned to the space between the spiral groove 11 and the first rolling groove 22 and is not always stressed at a specific position (single point) when being loaded, thereby avoiding deformation of the ball 40 from a position where the ball is always stressed, effectively prolonging the service life of the ball screw, avoiding noise generated by the ball screw during operation, and preventing the ball 40 from turning sideways and returning to the original position by using the design that the spiral thread 51 is arranged in an odd number which cannot be divided, or sequentially stressed at a specific upper point, a lower point or upper point, lower point, left point and right point.
The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the scope of the invention; all such equivalent changes and modifications as defined by the claims should be considered as falling within the scope of the present invention.
Claims (5)
1. The utility model provides a ball screw's backward flow way structure which characterized in that, this ball screw includes: a screw, a nut, two circulators, a plurality of balls and a back flow, wherein:
The rod body of the screw is provided with a spiral groove;
The two ends of the nut are respectively combined with a circulator, a first spiral rolling groove is arranged on the inner wall of a through hole in the center of the nut, a return channel penetrating through the two ends of the nut is arranged on the outer side of the through hole, and a second rolling groove on the circulator is used for connecting the first rolling groove with the return channel, so that the balls arranged between the spiral groove and the first rolling groove can smoothly perform circulation operation on the ball screw;
The inner pipe part of the return pipe is protruded with a plurality of spiral lines, the spiral lines are arranged in an odd number which cannot be divided completely, and when the return pipe is arranged in the return channel in a penetrating way, the balls which do circulating operation through the return channel can be driven by the spiral lines to generate lateral overturning when passing through the return pipe.
2. The ball screw return channel structure of claim 1 wherein said return tube is a wear resistant plastic tube.
3. The ball screw return passage structure according to claim 1, wherein three of the spiral threads are provided in the inner tube portion of the return tube.
4. The ball screw return passage structure according to claim 1, wherein five of the spiral threads are provided in the inner tube portion of the return tube.
5. The ball screw return passage structure according to claim 1, wherein seven of the spiral threads are provided in the inner tube portion of the return tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211411715.7A CN118066267A (en) | 2022-11-11 | 2022-11-11 | Reflux channel structure of ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211411715.7A CN118066267A (en) | 2022-11-11 | 2022-11-11 | Reflux channel structure of ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118066267A true CN118066267A (en) | 2024-05-24 |
Family
ID=91104413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211411715.7A Pending CN118066267A (en) | 2022-11-11 | 2022-11-11 | Reflux channel structure of ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118066267A (en) |
-
2022
- 2022-11-11 CN CN202211411715.7A patent/CN118066267A/en active Pending
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| SE01 | Entry into force of request for substantive examination | ||
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