CN106907448A - The nut hole structure of ball screw - Google Patents
The nut hole structure of ball screw Download PDFInfo
- Publication number
- CN106907448A CN106907448A CN201510970774.1A CN201510970774A CN106907448A CN 106907448 A CN106907448 A CN 106907448A CN 201510970774 A CN201510970774 A CN 201510970774A CN 106907448 A CN106907448 A CN 106907448A
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- Prior art keywords
- circular arc
- center
- circle
- arc
- nut
- Prior art date
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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, including：One screw rod a, nut, nut is provided with the perforation worn for the screw rod, and the outer fringe surface of the nut has a plane, and the plane has at least one set of pore；One circulation accessory, the circulation accessory is fixed in the plane of the nut；Wherein, respectively the pore profile is made up of at least more than three circular arcs, respectively the first circular arc, the second circular arc, three-arc, and first circular arc, between the second circular arc, three-arc respectively through a straight line link constituted, and first circular arc, the second circular arc, three-arc have one first center of circle, one second center of circle and one the 3rd center of circle respectively, a line of centres is constituted between first center of circle and the 3rd center of circle, the line of centres is vertical with the axis of the screw rod.
Description
Technical field
The present invention is relevant with the nut hole structure of ball screw, is made up of more than three circular arcs especially with regard to one kind
Nut pore.
Background technology
Refer to shown in Fig. 1-4, the ball screw used by currently available technology, including a screw rod 1, its outer edge surface sets
There is spiral helicine rolling channel 2；One nut 3, it is provided with the through hole 4 worn for the nut 3, and the inner edge surface of through hole 4 is provided with relative being somebody's turn to do
The rolling groove (the non-formula of figure) of rolling channel 2, the rolling channel 2 constitutes a load path 5 with the rolling groove, in the outer surface of the nut 3
The pore 6 that plural number is connected with the through hole 4 is provided with, the pore 6 is connected with the rolling groove；At least one circulation accessory 7, the circulation accessory
7 include a covering 8 and a base (the non-formula of figure), and the covering 8 has two foots 9 and is 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 up of two circular arcs using the connection of two straight lines,
And as shown in figure 4, the circular arc that is differed using two radius of the aperture of the pore 6, and center line L and the screw rod 1 in aperture axle
Direction inclines, therefore easily causes the thick deficiency of load groove meat, and meeting and the pore 6 produce interference, and the pipe after machining
Hole 6 is overstocked apart from D with tooth peak A meat thickness【Tooth peak A refers to the position between the adjacent rolling channel 2 or rolling groove】, while
Because the thickness of foot 9 of the covering 8 must be less than the aperture of the pore 6, Cai Nengshigai foots 9 wear the pore 6 of the nut 3,
There is the thick not enough phenomenon of meat in the related thickness for making the foot 9, causes breakage to occur, and in the pore 6 and the tooth peak A meat
It is thick apart from D it is overstocked in the case of, in addition to the rolling groove both sides that cause to be connected with pore 6 are there may be breakage, can also influence
The nut 3 is spinned the degree of accuracy of displacement in the screw rod 1.
Therefore, there is drawbacks described above to be primary research and development problem of the invention how to improve prior art formula ball screw.
The content of the invention
The present invention provides a kind of nut hole structure of ball screw, and its main purpose is to increase the covering of the circulation accessory
The pipe thickness of part and the nut pore, it is to avoid produce disrepair phenomenon and influence nut to be spinned the accurate of displacement in screw rod
Degree.
It is that, up to object defined above, the present invention provides a kind of nut hole structure of ball screw, including：One screw rod；One nut,
The nut is provided with the perforation worn for the screw rod, and the outer fringe surface of the nut has a plane, and the plane has at least one
Group pore；One circulation accessory, the circulation accessory is fixed in the plane of the nut；Wherein, respectively the pore profile by least three
Circular arc above, including：First circular arc, the second circular arc, three-arc, and first circular arc, between the second circular arc, three-arc
Respectively through a straight line link constituted, and first circular arc, the second circular arc, three-arc respectively with one first center of circle,
One second center of circle and one the 3rd center of circle, a line of centres is constituted between first center of circle and the 3rd center of circle, the line of centres and the spiral shell
The axis of bar is vertical.
It is preferred that the rolling channel effective thread direction that the direction of the second circular arc of the pore can turn according to the actual spiral shell of the screw rod
Set.
It is preferred that the radius of first circular arc, the second circular arc, three-arc need to be more than the radius of the rolling member, and should
First center of circle need to be less than the diameter of twice rolling member with the distance in second center of circle.
It is preferred that the radius of first circular arc, the second circular arc, three-arc need to be more than the radius of the rolling member, and should
Second center of circle need to be less than the diameter of twice rolling member with the distance in the 3rd center of circle.
It is preferred that the radius of first circular arc, the second circular arc, three-arc need to be more than the radius of the rolling member, and should
First center of circle need to be less than the diameter of twice rolling member with the distance in the 3rd center of circle.
Brief description of the drawings
Fig. 1 is the sectional perspective exploded view of the hole structure of prior art.
Fig. 2 is the three-dimensional combination figure of the hole structure of prior art.
Fig. 3 is the assembled sectional view of the hole structure of prior art.
Fig. 4 is the floor map of the hole structure of 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 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 reference numerals：
Prior art：
The rolling channel 2 of screw rod 1
The through hole 4 of nut 3
The pore 6 of load path 5
The circulation covering 8 of accessory 7
The screw T of foot 9
Tooth peak A is apart from D
Center line L
The present invention：
The rolling channel 11 of screw rod 10
The perforation of nut 20 21
The pore 220 of plane 22
The circular arc 2201 of first circular arc 2,200 second
The screw 221 of three-arc 2202
The load path 30 of rolling groove 210
Steel ball 31 circulates accessory 40
The foot 410 of covering 41 first
The foot 411 of first bending section 4,100 second
The screw T of second bending section 4110
Straight line T1, T2, T3 tooth peak A1
First second centers of circle of center of circle B1 B2
3rd center of circle B3 axis Xs
Line of centres Y is apart from D1
Specific embodiment
Below in conjunction with accompanying drawing, clear, complete description is carried out to the technical scheme in the present invention, it is clear that described
Embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is general
All other embodiment that logical technical staff is obtained on the premise of creative work is not made, belongs to protection of the present invention
Scope.
Refer to shown in Fig. 4-8, the embodiment of the present invention is a kind of nut hole structure of ball screw, including：
One screw rod 10, the surface of screw rod 10 has spiral helicine rolling channel 11；
One nut 20, the nut 10 is provided with the perforation 21 worn for the screw rod 10, and the inner surface of the perforation 21 is provided with relatively
The rolling groove 210 of the rolling groove 11, the rolling channel 11 constitutes a load path 30, the load path 30 with the rolling groove 210
It is installed with plural rolling member 31, and 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, and the plane 22 has at least one set of pore 220 and screw 221, and the pipe
Hole 220 connects with the perforation 21 and is connected with the rolling groove 210；
In the present embodiment, respectively the profile of pore 220 is made up of at least more than three circular arcs, comprising the first circular arc 2200,
Between second circular arc 2201, three-arc 2202, and first circular arc 2200, the second circular arc 2201, three-arc 2202 respectively
Link through straight line T1, T2 and a T3 and constituted, and the second circular arc 2201 of each group pore 220 is set in opposite direction；
And first circular arc 2200, the second circular arc 2201, three-arc 2202 have one first center of circle B1, one the respectively
Two center of circle B2 and one the 3rd center of circle B3, a line of centres Y is constituted between first center of circle B1 and the 3rd center of circle B3, line of centres Y
Axis X with the screw rod 10 is vertical；
One circulation accessory 40, the circulation accessory 40 is made up of, the covering 41 covering 41 and a base (the non-formula of figure)
Two ends are respectively defined as one first foot 410 and one second foot 411, and the foot 411 of the first foot 410 and second has respectively
One first bending section 4100 and one second bending section 4110, and first foot 410, the first bending section of the second foot 411
4100 and second bending section 4110 according to the pore 220 the direction of the second circular arc 2201 correspondence configure, recycle a screw T wear
Lock with the screw 221 again after the circulation accessory 40, the circulation accessory 40 is fixed in the plane 22 of the nut 20 and form one
Return flow line is simultaneously connected to the two ends of load path 30.
It is preferred that 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 effective thread direction of rolling channel 11, for Fig. 5, the second circular arc 2201 of each group pore 220 is in anti-
Direction is set；For Fig. 9, the second circular arc 2201 of each group pore 220 is set in correspondence direction；And with Figure 10,11 for, respectively
Second circular arc 2201 of group pore 220 is set in same direction.
Can be mentioned that, first circular arc 2200, the radius of the second circular arc 2201, three-arc 2202 need to be more than
The radius of the rolling member 31；And the distance or second center of circle B2 and the 3rd of first center of circle B1 and second center of circle B2
The distance of center of circle B3, and or first center of circle B1 and the 3rd center of circle B3 the distance diameter that all needs less than twice rolling member 31,
Make the profile of pore 220 can be made under above-mentioned size condition the plural rolling member 31 by the return flow line enter after can be swimmingly
Operation does spiral shell without being had influence on the nut 20 by the profile of the pore 220 to the return flow line other end in the screw rod 10
Revolve the degree of accuracy of displacement.
Accordingly, this case is because the pore 220 is modified as by least more than three radiuses by the long and narrow circular hole of prior art
Identical the first circular arc 2200, the second circular arc 2201, three-arc 2202, and first circular arc 2200, the second circular arc 2201,
Link through straight line T1, T2 and a T3 respectively between three-arc 2202 and constituted, therefore increase the aperture of the pore 220, and together
Between the Shi Jiakuan pores 220 and tooth peak A1 meat thickness apart from D1, this design except can avoid the pore 220 apart from D1
With the tooth peak A1 meat thicker than close, it is damaged outer to easily cause the pore 220, can also lift the nut 20 and be spinned position in the screw rod 10
The degree of accuracy of shifting.
The pore 220 of another this case should with straight line T1, T2 connection between first circular arc 2200 and the three-arc 2202
Second circular arc 2201, first bending section 4100 and one second bending section of the covering 41 can be increased by this second circular arc 2201
4110 meat is thick, it is to avoid first foot 410 and second foot 411 because meat thickness deficiency cause to occur in installing process it is damaged
Phenomenon.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (9)
1. the nut hole structure of a kind of ball screw, it is characterised in that including：
One screw rod, the screw surface has spiral helicine rolling channel；
One nut, the nut is provided with the perforation worn for the screw rod, and the inner surface of the perforation is provided with the relative rolling；
The rolling groove of groove, the rolling channel constitutes a load path with the rolling groove, and the load path is installed with plural rolling member, separately
The outer fringe surface of the nut has at least one set of pore, and the pore is connected with the perforation and is connected with the rolling groove；
One circulation accessory, the circulation accessory is fixed on the outer fringe surface of the nut and forms a return flow line and be connected to the load
Path two ends；
Wherein, respectively the pore profile is made up of at least more than three circular arcs, comprising the first circular arc, the second circular arc, three-arc, and
First circular arc, constituted through straight line link respectively between the second circular arc, three-arc, and the first circular arc, second
Circular arc, three-arc have one first center of circle, one second center of circle and one the 3rd center of circle, first center of circle and the 3rd center of circle respectively
Between constitute a line of centres, the line of centres is vertical with the axis of the screw rod.
2. the nut hole structure of ball screw as claimed in claim 1, it is characterised in that the side of the second circular arc of the pore
Set to the rolling channel effective thread direction turned according to the screw rod spiral shell.
3. the nut hole structure of ball screw as claimed in claim 1, it is characterised in that first circular arc, the second circular arc,
The radius of three-arc is more than the radius of the rolling member, and first center of circle rolls with the distance in second center of circle less than twice
The diameter of part.
4. the nut hole structure of ball screw as claimed in claim 1, it is characterised in that first circular arc, the second circular arc,
The radius of three-arc is more than the radius of the rolling member, and second center of circle rolls with the distance in the 3rd center of circle less than twice
The diameter of part.
5. the nut hole structure of ball screw as claimed in claim 1, it is characterised in that first circular arc, the second circular arc,
The radius of three-arc is more than the radius of the rolling member, and first center of circle rolls with the distance in the 3rd center of circle less than twice
The diameter of part.
6. the nut hole structure of ball screw as claimed in claim 1, it is characterised in that the second circular arc of each group pore is in
Opposite direction is set.
7. the nut hole structure of ball screw as claimed in claim 1, it is characterised in that the second circular arc of each group pore is in
Correspondence direction is set.
8. the nut hole structure of ball screw as claimed in claim 1, it is characterised in that the second circular arc of each group pore is in
Equidirectional setting.
9. the nut hole structure of ball screw as claimed in claim 1, it is characterised in that the circulation accessory has a covering
Part, the covering two ends are respectively defined as one first foot and one second foot, and first foot and crus secunda portion have respectively
One first bending section and one second bending section, first bending section and the second bending section according to the pore the second circular arc direction pair
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 true CN106907448A (en) | 2017-06-30 |
| CN106907448B CN106907448B (en) | 2019-03-19 |
Family
ID=59200900
Family Applications (1)
| 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 |
Country Status (1)
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106907448B (en) | 2019-03-19 |
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