CN210371880U - Circulator and ball screw pair comprising same - Google Patents
Circulator and ball screw pair comprising same Download PDFInfo
- Publication number
- CN210371880U CN210371880U CN201921435088.4U CN201921435088U CN210371880U CN 210371880 U CN210371880 U CN 210371880U CN 201921435088 U CN201921435088 U CN 201921435088U CN 210371880 U CN210371880 U CN 210371880U
- Authority
- CN
- China
- Prior art keywords
- section
- circulator
- ball
- segment
- nut
- 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.)
- Expired - Fee Related
Links
- 238000003754 machining Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000009347 mechanical transmission Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model discloses a circulator, which comprises a body, this internal ball hole that returns that is used for the ball to pass through that is provided with of body, the bottom of body is provided with flange portion, the one end of flange portion is provided with the first opening of returning the ball hole, the side of body is provided with the second opening of returning the ball hole, the side of body still is provided with the cut-off rule, the body is cut apart into first body and second body along the cut-off rule, the cut-off rule is including the L section at the axle section place of returning the ball hole, with the perpendicular just downwardly extending M section in L section, and the N section of the step type that is connected with M section. The utility model discloses a circulator and contain its ball screw pair, not only the machining precision requirement is lower, and the assembly is simple reliable moreover, has improved the life of structure, has reduced the processing degree of difficulty of nut simultaneously, has improved machining efficiency.
Description
Technical Field
The utility model relates to a mechanical transmission technical field especially relates to a circulator and contain its ball screw pair.
Background
The ball screw pair can convert rotary motion into linear motion and realize accurate feeding control, so that the ball screw pair is widely applied to the field of mechanical transmission. The circulator of the ball screw pair is divided into an external circulation and an internal circulation according to different circulation modes.
The external circulation is that the balls return to the space between the screw nuts through the spiral grooves or the insertion pipes on the outer surfaces of the nuts to enter the circulation again after the circulation process is finished. The external circulation ball screw pair has the disadvantages that the joint of the ball tracks is difficult to be made smooth, the stability of the ball tracks is influenced, the circulation part needs to be processed on the nut, the processing difficulty of the nut is improved, and the processing error can be synchronously amplified due to the matching of the circulation part.
The ball circulation is realized to the inner loop adoption circulator, and the circulator is radially installed on the nut, and every circulation circuit all has partly channel to have vacant, consequently causes the whole load of lead screw to reduce, needs a plurality of circulation circuits under the heavy load occasion, can have no-load channel between circulation circuit and the circulation circuit, causes the length of nut to increase, and the phase relation of a plurality of circulators also needs to be guaranteed, therefore the processing degree of difficulty is higher.
Therefore, there is a need to develop a circulator and a ball screw pair with low requirement on machining precision and simple and reliable assembly.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a circulator, which not only has lower processing precision requirement, but also has simple and reliable assembly and improves the service life of the structure.
A second object of the present invention is to provide a ball screw assembly including the above circulator, which reduces the processing difficulty of the nut and improves the processing efficiency.
The utility model discloses an one of the purpose adopts following technical scheme to realize:
the utility model provides a circulator, includes the body, this internal ball hole that returns that is used for the ball to pass through that is provided with, the bottom of body is provided with flange portion, the one end of flange portion is provided with the first opening that returns the ball hole, the side of body is provided with the second opening that returns the ball hole, the side of body still is provided with the cut-off line, the body is split into first body and second body along the cut-off line, the cut-off line includes the L section at the axle section place that returns the ball hole, M section perpendicular and downwardly extending with the L section, and the N section of the step type that is connected with the M section.
Further, the N segments include a P segment parallel to the M segment, and an O segment connecting the M segment and the P segment.
Further, the included angle between the O section and the M section is 80-100 degrees. Preferably, the angle between the O segment and the M segment is 80 °, 85 °, 90 °, 95 °, or 100 °.
Furthermore, the L section, the M section and the O section form a U-shaped connecting section, the first body is provided with a groove at the connecting section, and the second body is provided with a boss matched with the groove at the connecting section.
Further, the groove is in interference fit with the boss.
Furthermore, a clamping groove is formed in the side face of the first body, and a flange matched with the clamping groove is formed in the side face of the second body.
Furthermore, the outer peripheral surface of the flange is provided with at least one notch, and the inner peripheral surface of the clamping groove is provided with a sharp corner matched with the notch.
Further, the clamping groove is in interference fit with the flange.
The second purpose of the utility model is realized by adopting the following technical scheme:
a ball screw pair comprises a screw, a nut and balls, wherein the nut is provided with two mounting holes along the radial direction of the nut, and the circulator is arranged in the mounting holes.
Further, the circulator is fixed to the nut by two screws.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the circulator is divided into two parts for processing by technical means of arranging a ball returning hole for passing a ball in the body, arranging a flange part at the bottom of the body, arranging a first opening of the ball returning hole at one end of the flange part, arranging a second opening of the ball returning hole on the side surface of the body, and arranging a dividing line on the side surface of the body, wherein the body is divided into the first body and the second body along the dividing line, and the dividing line comprises an L section where the axial section of the ball returning hole is located, an M section which is vertical to the L section and extends downwards and a step-shaped N section which is connected with the M section; the ball passes through the ball returning hole and is contacted with the upper surface or the lower surface of the ball returning hole under the action of centrifugal force or gravity, and the L section of the dividing line is arranged on the axial section of the ball returning hole, so that the ball cannot be contacted with the dividing line when passing through, the operation of the ball cannot be influenced by the processing precision of the dividing line, and the requirement on the processing precision is lowered; the L section is vertical to the M section, namely the L section is tangent to the second opening of the ball returning hole, when the ball runs from the first opening to the second opening, the ball impacts the second opening, and the L section is tangent to the second opening, so that the overall strength of the structure can be effectively improved, the damage to the structure due to the impact of the ball is buffered, and the overall service life is prolonged; through setting up the N section of step type, play spacing effect to the second body, the assembly is simple reliable.
The two mounting holes are formed in the nut along the radial direction, and the circulator is arranged in the mounting holes, so that the circulating part does not need to be machined on the nut and is a ball returning hole in the circulator, the machining difficulty and the matching error of the nut are reduced, and the machining efficiency is improved.
Drawings
Fig. 1 is a perspective view of a circulator according to an embodiment of the present invention;
fig. 2 is a perspective view of another direction of the circulator according to the embodiment of the present invention;
fig. 3 is an exploded perspective view of a circulator according to an embodiment of the present invention;
fig. 4 is a front view of a circulator according to an embodiment of the present invention;
fig. 5 is a rear view of a circulator according to an embodiment of the present invention;
fig. 6 is a perspective view of a ball screw pair according to an embodiment of the present invention;
fig. 7 is a perspective view of a nut according to an embodiment of the present invention.
In the figure: 100. a body; 10. returning the bead holes; 20. a flange portion; 30. a first opening; 40. a second opening; 50. dividing the lines; 51. l section; 52. m sections; 53. a section O; 54. a P section; 60. a first body; 61. a groove; 62. a card slot; 621. sharp corners; 70. a second body; 71. a boss; 72. a flange; 721. cutting; 200. a screw rod; 300. a nut; 310. mounting holes; 400. and (4) screws.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
The circulator shown in fig. 1 to 5 includes a body 100, a ball returning hole 10 for passing a ball (not shown) is provided in the body 100, a flange 20 is provided at a bottom of the body 100, a first opening 30 of the ball returning hole 10 is provided at one end of the flange 20, a second opening 40 of the ball returning hole 10 is provided at a side of the body 100, a dividing line 50 is further provided at the side of the body 100, the body 100 is divided into a first body 60 and a second body 70 along the dividing line 50, and the dividing line 50 includes an L section 51 where an axial cross section of the ball returning hole 10 is located, an M section 52 perpendicular to the L section 51 and extending downward, and a stepped N section (not shown) connected to the M section 52.
The circulator is divided into two parts for processing, so that the processing difficulty is reduced, and a part is allowed to have a certain processing error; because the ball passes through the ball returning hole 10 and is contacted with the upper surface or the lower surface of the ball returning hole 10 under the action of centrifugal force or gravity, the L section 51 of the dividing line 50 is arranged on the axial section of the ball returning hole 10, so that the ball cannot be contacted with the dividing line 50 when passing through, the operation of the ball cannot be influenced by the processing precision of the dividing line 50, and the requirement on the processing precision is reduced; the L section 51 is perpendicular to the M section 52, namely the L section 51 is tangent to the second opening 40 of the ball returning hole 10, when a ball runs from the first opening 30 to the second opening 40, impact can be caused to the second opening 40, and the L section 51 is tangent to the second opening 40, so that the overall strength of the structure can be effectively improved, the damage to the structure due to the impact of the ball can be buffered, and the overall service life is prolonged; the step-shaped N sections are arranged, so that the second body 70 is limited, and the assembly is simple and reliable.
As a preferred embodiment, as shown in fig. 2 and 4, the N segments include a P segment 54 parallel to the M segment 52, and an O segment 53 connecting the M segment 52 and the P segment 54. The P section 54 is parallel to the M section 52, so that the overall strength of the structure is further improved, the damage to the structure caused by ball impact is buffered, and the overall service life is prolonged.
In a preferred embodiment, the included angle between the O section 53 and the M section 52 is 80-100 degrees. In this embodiment, the angle between the O-segment 53 and the M-segment 52 is 90 °. In other embodiments, the included angle between the O segment 53 and the M segment 52 may also be 80 °, 85 °, 95 °, 100 °, or other values.
In a preferred embodiment, the L-section 51, the M-section 52 and the O-section 53 form a u-shaped connecting section, as shown in fig. 3, the first body 60 is provided with a groove 61 at the connecting section, and the second body 70 is provided with a projection 71 at the connecting section, which is matched with the groove 61. Cooperate through recess 61 and boss 71 for first body 60 and second body 70 joint mutually, play vertical direction and horizontal direction's limiting displacement to second body 70. Preferably, the groove 61 is interference fit with the boss 71, so that no additional fasteners are required for the first body 60 and the second body 70, and assembly is simpler.
In a preferred embodiment, as shown in fig. 3, a side surface of the first body 60 is provided with a locking groove 62, and a side surface of the second body 70 is provided with a flange 72 which is matched with the locking groove 62. The side surface of the second body 70 is limited by the engagement of the engaging groove 62 and the flange 72. Preferably, the catch 62 is an interference fit with the flange 72, so that the first body 60 and the second body 70 are more securely fixed and easier to assemble.
In a preferred embodiment, as shown in fig. 3, the outer circumferential surface of the flange 72 is provided with at least one notch 721, and the inner circumferential surface of the locking groove 62 is provided with a sharp corner 621 which is matched with the notch 721. By providing the cut 721 and the sharp corner 621, a spacing between the first body 60 and the second body 70 is increased, and a shake between the first body 60 and the second body 70 due to a machining error is prevented. Preferably, the number of the cut 721 is one, so that the processing difficulty is reduced on the premise of ensuring the limit.
As shown in fig. 6 and 7, the embodiment of the present invention further provides a ball screw pair, which includes a screw 200, a nut 300, and balls (not shown), wherein the nut 300 is provided with two mounting holes 310 along a radial direction thereof, and the circulator is disposed in the mounting hole 310. Preferably, the circulator is fixed to the nut 300 by two screws 400.
Through the technical means of radially assembling the circulator in the mounting hole 310 of the nut 300, the outer diameter of the nut 300 is reduced, under the same volume, the bearing capacity of the screw rod 200 is improved, under the condition that the load is not changed, the size of the ball screw rod 200 pair can be reduced, the mounting space is saved, the structure is simple, the assembly is convenient, the circulating part is not required to be processed on the nut 300, the circulating part is the ball returning hole 10 on the circulator, the processing difficulty and the matching error of the nut 300 are reduced, and the processing efficiency is improved.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. A circulator comprising a body, characterized in that: the ball-returning device comprises a body, and is characterized in that a ball-returning hole for allowing balls to pass through is arranged in the body, a flange part is arranged at the bottom of the body, a first opening of the ball-returning hole is arranged at one end of the flange part, a second opening of the ball-returning hole is arranged on the side surface of the body, a dividing line is further arranged on the side surface of the body, the body is divided into a first body and a second body along the dividing line, and the dividing line comprises an L section where the shaft section of the ball-returning hole is located, an M section which is perpendicular to the L section and extends downwards, and a step-shaped N section which is connected with the M section.
2. The circulator of claim 1 wherein: the N segment includes a P segment parallel to the M segment and an O segment connecting the M segment and the P segment.
3. The circulator of claim 2 wherein: the included angle between the O section and the M section is 80-100 degrees.
4. The circulator of claim 2 wherein: the L section, the M section and the O section form a U-shaped connecting section, the first body is provided with a groove at the connecting section, and the second body is provided with a boss matched with the groove at the connecting section.
5. The circulator of claim 4 wherein: the groove is in interference fit with the boss.
6. The circulator of claim 1 wherein: the side of the first body is provided with a clamping groove, and the side of the second body is provided with a flange matched with the clamping groove.
7. The circulator of claim 6 wherein: the outer circumferential surface of the flange is provided with at least one notch, and the inner circumferential surface of the clamping groove is provided with a sharp corner matched with the notch.
8. The circulator of claim 6 wherein: the clamping groove is in interference fit with the flange.
9. The utility model provides a ball screw is vice, includes lead screw, nut and ball, its characterized in that: the nut is provided with two mounting holes in a radial direction thereof, and the circulator as claimed in any one of claims 1 to 8 is provided in the mounting hole.
10. The ball screw pair of claim 9, wherein: the circulator is fixed on the nut through two screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921435088.4U CN210371880U (en) | 2019-08-31 | 2019-08-31 | Circulator and ball screw pair comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921435088.4U CN210371880U (en) | 2019-08-31 | 2019-08-31 | Circulator and ball screw pair comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210371880U true CN210371880U (en) | 2020-04-21 |
Family
ID=70253515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921435088.4U Expired - Fee Related CN210371880U (en) | 2019-08-31 | 2019-08-31 | Circulator and ball screw pair comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210371880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425262A (en) * | 2019-08-31 | 2019-11-08 | 深圳盛世电梯有限公司 | A kind of circulator and the ball wire bar pair comprising it |
-
2019
- 2019-08-31 CN CN201921435088.4U patent/CN210371880U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425262A (en) * | 2019-08-31 | 2019-11-08 | 深圳盛世电梯有限公司 | A kind of circulator and the ball wire bar pair comprising it |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7921743B2 (en) | Ball screw device | |
| CN210371880U (en) | Circulator and ball screw pair comprising same | |
| US8579389B1 (en) | Server cabinet | |
| EP2988397B1 (en) | Shell for a rotating electrical machine | |
| EP1837556B1 (en) | Ball screw device | |
| US20030089188A1 (en) | Ball-nut assembly and method for making | |
| CN209157735U (en) | Special-shaped thin wall part spragging gear inside and outside circle six equal part slot milling tool of double tensioners | |
| CN221723346U (en) | Transmission mechanism of sliding platform of machine tool | |
| CN207518371U (en) | A kind of stators for refrigeration compressor motor axial fixing structure | |
| CN217682847U (en) | Split combined type bearing ring | |
| CN221374366U (en) | Ball screw pair | |
| EP1318331B1 (en) | Ball screw apparatus | |
| CN208919024U (en) | Axle center adjustable nut | |
| CN212318545U (en) | High-load deep groove ball bearing ring | |
| CN207893079U (en) | One kind carrying circlip type matrix reverser nut | |
| CN212535980U (en) | Crankshaft and reciprocating compressor having the same | |
| CN202100455U (en) | Stator structure of steering vane pump | |
| JP2000337470A (en) | Ball screw | |
| CN217485183U (en) | Electromagnetic armature subassembly | |
| CN114060486B (en) | External circulation ball screw and return pipe structure thereof | |
| CN217453653U (en) | Rotating shaft pressing-in distance control tool | |
| CN220501683U (en) | Universal ball | |
| CN212318709U (en) | Shockproof high-precision gear | |
| CN210686888U (en) | Shaft assembly and motor drive system | |
| CN211852536U (en) | High-precision centering connecting shaft structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |