CN106907448B - The nut hole structure of ball screw - Google Patents
The nut hole structure of ball screw Download PDFInfo
- Publication number
- CN106907448B CN106907448B CN201510970774.1A CN201510970774A CN106907448B CN 106907448 B CN106907448 B CN 106907448B CN 201510970774 A CN201510970774 A CN 201510970774A CN 106907448 B CN106907448 B CN 106907448B
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- Prior art keywords
- circular arc
- center
- circle
- nut
- hole structure
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The present invention provides a kind of nut hole structure of ball screw, comprising: a screw rod, a nut, the outer fringe surface which is equipped with the perforation and the nut that wear for the screw rod have a plane, which has at least one set of pore；One circulation accessory, the circulation accessory are fixed in the plane of the nut；Wherein, respectively the pore shape is made of at least three or more circular arcs, respectively the first circular arc, the second circular arc, third circular arc, and it is constituted respectively through straight line link between first circular arc, the second circular arc, third circular arc, and first circular arc, the second circular arc, third circular arc are respectively provided with one first center of circle, one second center of circle and a third center of circle, a line of centres is constituted between first center of circle and the third center of circle, the line of centres is vertical with the axis of the screw rod.
Description
Technical field
The present invention is related with the nut hole structure of ball screw, is made of especially with regard to one kind three or more circular arcs
Nut pore.
Background technique
It please refers to shown in Fig. 1-4, is ball screw used in currently available technology, including a screw rod 1, outer edge surface is set
There is spiral helicine rolling channel 2；One nut 3, is equipped with the through-hole 4 worn for the nut 3, which is equipped with opposite be somebody's turn to do
The rolling groove (the non-formula of figure) of rolling channel 2, the rolling channel 2 and the rolling groove constitute a load path 5, in the outer surface of the nut 3
Equipped with the pore 6 that plural number is connected to the through-hole 4, which is connected with the rolling groove；At least one circulation accessory 7, the circulation accessory
7 include a covering 8 and a pedestal (the non-formula of figure), which has two foots 9 and be inserted in the pore 7 respectively, and by
Screw T makes the circulation accessory 7 be screw-locked at the outer surface of the nut 3.
As shown in figure 3, the aperture design of the pore 6 is long and narrow circular hole, and is made of two circular arcs using the connection of two straight lines,
And as shown in figure 4, the aperture of the pore 6 uses the different circular arc of two radius, and the axis of the center line L in aperture and screw rod 1
Direction inclination, therefore it be easy to cause load groove meat thick insufficient, interference, and the pipe can be generated with the pore 6 after processing is completed
Hole 6 and the thick distance D of the tooth peak A meat are overstocked [tooth peak A refers to the position between the adjacent rolling channel 2 or rolling groove], simultaneously
Because 9 thickness of foot of the covering 8 must be less than the aperture of the pore 6, Cai Nengshigai foot 9 wears the pore 6 of the nut 3,
There is the thick insufficient phenomenon of meat in the related thickness for enabling the foot 9, leads to breakage, and in the pore 6 and the tooth peak A meat
In the case that thick distance D is overstocked, in addition to causing the rolling groove two sides being connected with pore 6 there may be other than breakage, also it will affect
The nut 3 is spinned the accuracy of displacement in the screw rod 1.
Therefore, how to improve prior art formula ball screw with drawbacks described above is the primary research and development project of the present invention.
Summary of the invention
The present invention provides a kind of nut hole structure of ball screw, and main purpose is to increase the covering of the circulation accessory
The pipe thickness of part and the nut pore avoids generating disrepair phenomenon and influencing nut spinning the accurate of displacement in screw rod
Degree.
For up to foregoing purpose, the present invention provides a kind of nut hole structure of ball screw, comprising: a screw rod；One nut,
The outer fringe surface that the nut is equipped with the perforation and the nut that wear for the screw rod has a plane, which has at least one
Group pore；One circulation accessory, the circulation accessory are fixed in the plane of the nut；Wherein, respectively the pore shape by least three
Above circular arc, comprising: the first circular arc, the second circular arc, third circular arc, and between first circular arc, the second circular arc, third circular arc
Respectively through a straight line link constituted and first circular arc, the second circular arc, third circular arc be respectively provided with one first center of circle,
One second center of circle and a third center of circle, constitute a line of centres between first center of circle and the third center of circle, the line of centres and the spiral shell
The axis of bar is vertical.
Preferably, the rolling channel effective thread direction that the direction of the second circular arc of the pore can turn according to the practical spiral shell of the screw rod
Setting.
Preferably, the radius of first circular arc, the second circular arc, third circular arc need to be greater than the radius of the rolling member, and should
It first center of circle need to be less than the diameter of twice of rolling member at a distance from second center of circle.
Preferably, the radius of first circular arc, the second circular arc, third circular arc need to be greater than the radius of the rolling member, and should
It second center of circle need to be less than the diameter of twice of rolling member at a distance from the third center of circle.
Preferably, the radius of first circular arc, the second circular arc, third circular arc need to be greater than the radius of the rolling member, and should
It first center of circle need to be less than the diameter of twice of rolling member at a distance from the third center of circle.
Detailed description of the invention
Fig. 1 is the sectional perspective exploded view of the hole structure of the prior art.
Fig. 2 is the three-dimensional combination figure of the hole structure of the prior art.
Fig. 3 is the assembled sectional view of the hole structure of the prior art.
Fig. 4 is the floor map of the hole structure of the prior art.
Fig. 5 is the sectional perspective exploded view of hole structure of the present invention.
Fig. 6 is the floor map of hole structure of the present invention.
Fig. 7 is the three-dimensional combination figure of hole structure of the present invention.
Fig. 8 is the floor map of hole structure of the present invention.
Fig. 9 is the oblique cross-sectional view of hole structure of the present invention.
Figure 10 is another embodiment floor map of hole structure of the present invention.
Figure 11 is the still another embodiment floor map of hole structure of the present invention.
Figure 12 is the another embodiment floor map of hole structure of the present invention.
Description of symbols:
The prior art:
1 rolling channel 2 of screw rod
3 through-hole 4 of nut
5 pore 6 of load path
Recycle 7 covering 8 of accessory
9 screw T of foot
Tooth peak A distance D
Center line L
The present invention:
10 rolling channel 11 of screw rod
The perforation of nut 20 21
22 pore 220 of plane
First circular arc, 2,200 second circular arc 2201
2202 screw hole 221 of third circular arc
210 load path 30 of rolling groove
Steel ball 31 recycles accessory 40
41 first foot 410 of covering
First bending section, 4,100 second foot 411
Second bending section, 4110 screw T
Straight line T1, T2, T3 tooth peak A1
First second center of circle center of circle B1 B2
Third center of circle B3 axis X
Line of centres Y distance D1
Specific embodiment
Below in conjunction with attached drawing, clear, complete description is carried out to the technical solution in the present invention, it is clear that described
Embodiment is a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff all other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
It please refers to shown in Fig. 4-8, the embodiment of the present invention is a kind of nut hole structure of ball screw, comprising:
One screw rod 10,10 surface of screw rod have spiral helicine rolling channel 11；
One nut 20, the nut 10 are equipped with the perforation 21 worn for the screw rod 10, and the inner surface of the perforation 21 is equipped with opposite
The rolling groove 210 of the rolling groove 11, the rolling channel 11 and the rolling groove 210 constitute a load path 30, the load path 30
It is installed with plural rolling member 31, and the position between the adjacent rolling channel 11 or the rolling groove 210 is defined as a tooth peak A1,
The outer fringe surface of the another nut 20 has a plane 22, which has at least one set of pore 220 and screw hole 221, and the pipe
Hole 220 is connected to the perforation 21 and is connected with the rolling groove 210；
In this present embodiment, respectively 220 shape of pore is made of at least three or more circular arcs, comprising the first circular arc 2200,
Second circular arc 2201, third circular arc 2202, and between first circular arc 2200, the second circular arc 2201, third circular arc 2202 respectively
It is constituted through straight line T1, T2 and T3 connection, and the second circular arc 2201 of each group pore 220 is arranged in opposite direction；
And first circular arc 2200, the second circular arc 2201, third circular arc 2202 are respectively provided with one first center of circle B1, one
A line of centres Y, line of centres Y are constituted between two center of circle B2 and a third center of circle B3, first center of circle B1 and third center of circle B3
It is vertical with the axis X of the screw rod 10；
One circulation accessory 40, the circulation accessory 40 are made of, the covering 41 covering 41 and a pedestal (the non-formula of figure)
Both ends are respectively defined as one first foot 410 and one second foot 411, and first foot 410 and the second foot 411 are respectively provided with
One first bending section 4100 and one second bending section 4110, and first bending section of first foot 410, the second foot 411
4100 and second second circular arc 2201 direction corresponding configuration of the bending section 4110 according to the pore 220, recycle a screw T to wear
Lock again with the screw hole 221 after the circulation accessory 40, is fixed on the circulation accessory 40 in the plane 22 of the nut 20 and forms one
Return flow line is simultaneously connected to 30 both ends of load path.
Preferably, please referring to shown in Fig. 9-11, the direction of the second circular arc 2201 of the pore 220 can be real according to the screw rod 10
When border spiral shell turns set by its 11 effective thread direction of rolling channel, for Fig. 5, the second circular arc 2201 of each group pore 220 is in anti-
Direction setting；For Fig. 9, the second circular arc 2201 of each group pore 220 is arranged in corresponding direction；And with Figure 10,11 for, respectively
Second circular arc 2201 of group pore 220 is arranged in same direction.
Can be mentioned that the radius of first circular arc 2200, the second circular arc 2201, third circular arc 2202 need to be greater than
The radius of the rolling member 31；And first center of circle B1 is at a distance from the B2 of second center of circle or second center of circle B2 and the third
The distance of center of circle B3, and or first center of circle B1 diameter of less than twice rolling member 31 is all needed at a distance from the B3 of the third center of circle,
It can be swimmingly after making 220 shape of pore that the plural number rolling member 31 can be enabled to be entered under above-mentioned size condition by the return flow line
Operation does spiral shell in the screw rod 10 without being influenced the nut 20 by the shape of the pore 220 to the return flow line other end
Revolve the accuracy of displacement.
Accordingly, this case by the long and narrow circular hole of the prior art because being modified as the pore 220 by least three or more radiuses
Identical first circular arc 2200, the second circular arc 2201, third circular arc 2202, and first circular arc 2200, the second circular arc 2201,
It is constituted respectively through straight line T1, T2 and T3 connection between three-arc 2202, therefore increases the aperture of the pore 220, and is same
The Shi Jiakuan pore 220 distance D1, distance D1 of this design method in addition to can avoid the pore 220 between tooth peak A1 meat thickness
It with the tooth peak A1 meat thicker than close, be easy to cause the pore 220 damaged outer, can also promote the nut 20 and spin position in the screw rod 10
The accuracy of shifting.
The pore 220 of another this case should with straight line T1, T2 connection between first circular arc 2200 and the third circular arc 2202
Second circular arc 2201 can increase the first bending section 4100 and one second bending section of the covering 41 by this second circular arc 2201
4110 meat is thick, and first foot 410 and second foot 411 is avoided to lead to occur breakage in installing process because of meat thickness deficiency
Phenomenon.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (9)
1. a kind of nut hole structure of ball screw, comprising:
One screw rod, the screw surface have spiral helicine rolling channel；
One nut, the nut are equipped with the perforation worn for the screw rod, and the inner surface of the perforation is equipped with the opposite rolling；
The rolling groove of groove, the rolling channel and the rolling groove constitute a load path, which is installed with plural rolling member, separately
The outer fringe surface of the nut has at least one set of pore, which is connected to the perforation and is connected with the rolling groove；
One circulation accessory, which, which is fixed on the outer fringe surface of the nut, forms a return flow line and is connected to the load
Path both ends；
It is characterized in that, respectively the pore shape is made of at least three or more circular arcs, it include the first circular arc, the second circular arc, third
Circular arc, and between first circular arc, the second circular arc, third circular arc respectively through a straight line link constituted and this first justify
Arc, the second circular arc, third circular arc are respectively provided with one first center of circle, one second center of circle and a third center of circle, first center of circle with should
A line of centres is constituted between the third center of circle, the line of centres is vertical with the axis of the screw rod.
2. the nut hole structure of ball screw as described in claim 1, which is characterized in that the side of the second circular arc of the pore
It is arranged to the rolling channel effective thread direction turned according to the screw rod spiral shell.
3. the nut hole structure of ball screw as described in claim 1, which is characterized in that first circular arc, the second circular arc,
The radius of third circular arc is greater than the radius of the rolling member and first center of circle rolls at a distance from second center of circle less than twice
The diameter of part.
4. the nut hole structure of ball screw as described in claim 1, which is characterized in that first circular arc, the second circular arc,
The radius of third circular arc is greater than the radius of the rolling member and second center of circle rolls at a distance from the third center of circle less than twice
The diameter of part.
5. the nut hole structure of ball screw as described in claim 1, which is characterized in that first circular arc, the second circular arc,
The radius of third circular arc is greater than the radius of the rolling member and first center of circle rolls at a distance from the third center of circle less than twice
The diameter of part.
6. the nut hole structure of ball screw as described in claim 1, which is characterized in that the second circular arc of each group pore is in
Opposite direction setting.
7. the nut hole structure of ball screw as described in claim 1, which is characterized in that the second circular arc of each group pore is in
Corresponding direction setting.
8. the nut hole structure of ball screw as described in claim 1, which is characterized in that the second circular arc of each group pore is in
Equidirectional setting.
9. the nut hole structure of ball screw as described in claim 1, which is characterized in that the circulation accessory has a covering
Part, the covering both ends are respectively defined as one first foot and one second foot, and first foot and crus secunda portion are respectively provided with
The the second circular arc direction pair of one first bending section and one second bending section, first bending section and the second bending section according to the pore
It should configure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510970774.1A CN106907448B (en) | 2015-12-22 | 2015-12-22 | The nut hole structure of ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510970774.1A CN106907448B (en) | 2015-12-22 | 2015-12-22 | The nut hole structure of ball screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106907448A CN106907448A (en) | 2017-06-30 |
| CN106907448B true CN106907448B (en) | 2019-03-19 |
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ID=59200900
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510970774.1A Active CN106907448B (en) | 2015-12-22 | 2015-12-22 | The nut hole structure of ball screw |
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| Country | Link |
|---|---|
| CN (1) | CN106907448B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010164152A (en) * | 2009-01-16 | 2010-07-29 | Shangyin Sci & Technol Co Ltd | Ball screw with external return part |
| CN202274052U (en) * | 2011-09-21 | 2012-06-13 | 上银科技股份有限公司 | Internal-circulating ball screw |
| CN103697130A (en) * | 2012-09-28 | 2014-04-02 | 上银科技股份有限公司 | Nut rotating type linear transmission element |
| CN204025581U (en) * | 2014-08-29 | 2014-12-17 | 陆如东 | Straight-line ball guide pin bushing |
| CN204061783U (en) * | 2014-06-26 | 2014-12-31 | 北京精密天工滚珠丝杠股份有限公司 | Ball screw pair closing in plastic reverser |
| JP2015145720A (en) * | 2014-02-04 | 2015-08-13 | 日本電産サンキョー株式会社 | Ball screw device, end deflector and manufacturing method of end deflector |
-
2015
- 2015-12-22 CN CN201510970774.1A patent/CN106907448B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010164152A (en) * | 2009-01-16 | 2010-07-29 | Shangyin Sci & Technol Co Ltd | Ball screw with external return part |
| CN202274052U (en) * | 2011-09-21 | 2012-06-13 | 上银科技股份有限公司 | Internal-circulating ball screw |
| CN103697130A (en) * | 2012-09-28 | 2014-04-02 | 上银科技股份有限公司 | Nut rotating type linear transmission element |
| JP2015145720A (en) * | 2014-02-04 | 2015-08-13 | 日本電産サンキョー株式会社 | Ball screw device, end deflector and manufacturing method of end deflector |
| CN204061783U (en) * | 2014-06-26 | 2014-12-31 | 北京精密天工滚珠丝杠股份有限公司 | Ball screw pair closing in plastic reverser |
| CN204025581U (en) * | 2014-08-29 | 2014-12-17 | 陆如东 | Straight-line ball guide pin bushing |
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| Publication number | Publication date |
|---|---|
| CN106907448A (en) | 2017-06-30 |
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