CN204878571U - Ball screw device - Google Patents
Ball screw device Download PDFInfo
- Publication number
- CN204878571U CN204878571U CN201520161087.0U CN201520161087U CN204878571U CN 204878571 U CN204878571 U CN 204878571U CN 201520161087 U CN201520161087 U CN 201520161087U CN 204878571 U CN204878571 U CN 204878571U
- Authority
- CN
- China
- Prior art keywords
- bearing
- lead screw
- ball
- screw shaft
- supporting
- 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
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- Transmission Devices (AREA)
Abstract
The utility model provides a tip of lead screw axle is by the ball screw device of antifriction bearing supporting, its characterized in that has: the lead screw axle of helicla flute is formed with on the surface, the bearing portion of setting that forms with tip to at this lead screw axle carries out the bearing for the supporting that supports, the bearing portion of setting has the terminal surface that the helicla flute communicate, and have with the drum part of the ring shape of terminal surface butt, and with the mode configuration of the axial terminal surface butt of drum part the bearing is used in the supporting.
Description
Technical field
The ball-screw apparatus that the end that the utility model relates to lead screw shaft is supported by rolling bearing.
Background technique
In ball-screw apparatus in the past, be configured to, form chimeric layer difference portion in lead screw shaft end, and make the inner ring end face of supporting bearing and the end contact in this layer of difference portion.Be fitted together to and become the size with the dimensional fits of the supporting bearing of assembling by the shape in layer difference portion.
Model utility content
In the past, the end in layer difference portion and the inner ring sidewall contact of block bearing, bore axial load in this surface of contact.Owing to forming the spiral chute of ball rolling in lead screw shaft, if so until lead screw shaft end all has spiral chute, then the cross section of lead screw shaft can become non-circular shape.Thus, if do not arrange layer difference portion, then the inner ring end face of supporting bearing can not contact equably and can become unsure state.Therefore, axial load bearing capacity reduces and the vibration of ball-screw apparatus or damage in advance can become problem.
The utility model becomes following formation to solve this problem.
(1) ball-screw apparatus, it has: be formed with spiral fluted lead screw shaft on surface; With the supporting bearing supported the bearing setting unit formed in the end of this lead screw shaft, described bearing setting unit has the end face that described spiral chute is communicated with, and there is the cylinder part of the toroidal abutted with described end face, and configure described supporting bearing in the mode that the end face of the axis with described cylinder part abuts.
(2) in addition, the ball-screw apparatus according to above-mentioned (1), described cylinder part is also fixed by locking nut via supporting bearing and pad.
That is, can realize according to ball-screw apparatus of the present utility model:
(1) cylinder part is assembled in the chimeric layer difference portion of lead screw shaft end in the mode becoming the state arranged side by side with supporting bearing, thus, can be configured to, the inner ring sidewall of supporting bearing is contacted equably with the layer difference portion be set on leading screw axle head;
(2) outside dimension of the cylinder part assembled can with coordinate load bearing capacity etc. and the dimensional fits ground of selected supporting bearing freely changes.
Accompanying drawing explanation
Fig. 1 represents the supporting construction in the lead screw shaft end of the ball-screw apparatus of mode of execution of the present utility model.
Description of reference numerals
1 inner ring (supporting bearing)
3 outer rings (supporting bearing)
5 lead screw shaft
7 cylinder parts
9 locking nuts
11 brackets
13 retaining rings
15 pads
Embodiment
With reference to Fig. 1, ball-screw apparatus of the present utility model is described.
Fig. 1 represents the supporting construction in the lead screw shaft end of the ball-screw apparatus of mode of execution of the present utility model.As shown in Figure 1, ball-screw apparatus is arranged on bracket 11, and it has: be formed with spiral fluted lead screw shaft 5 on surface; With the supporting bearing supported the bearing setting unit formed in the end of this lead screw shaft 5, this supporting bearing has inner ring 1 and outer ring 3.Be provided with the cylinder part 7 of toroidal in bearing setting unit in the mode abutted with the end face that the spiral chute of lead screw shaft 5 is communicated with, and configure the inner ring 1 of supporting bearing in the mode that the end face of the axis with this cylinder part 7 abuts.And cylinder part 7 is fixed via supporting bearing and pad 15 by locking nut 9 and/or retaining ring 13, thus, inner ring 1 and lead screw shaft 5 integration is made.In addition, in order to make the end face of cylinder part 7 contact equably with the end face of inner ring 1, and the outside dimension of cylinder part 7 is become, larger than the external diameter of lead screw shaft 5, and less than the internal diameter of outer ring 3.
According to the utility model, the inner ring 1 of supporting bearing can be made to bear thrust load from lead screw shaft 5 equably, thus can be firmly fixed.Thus, owing to reducing the vibration of ball-screw apparatus, so the industry equipment of the injection moulding machine requiring high manufacturing accuracy etc. can be used in.
Claims (2)
1. a ball-screw apparatus, is characterized in that, has: be formed with spiral fluted lead screw shaft on surface; With the supporting bearing supported the bearing setting unit formed in the end of this lead screw shaft, described bearing setting unit has the end face that described spiral chute is communicated with, and there is the cylinder part of the toroidal abutted with described end face, and configure described supporting bearing in the mode that the end face of the axis with described cylinder part abuts.
2. ball-screw apparatus according to claim 1, is characterized in that, described cylinder part is also fixed by locking nut via supporting bearing and pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520161087.0U CN204878571U (en) | 2015-03-20 | 2015-03-20 | Ball screw device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520161087.0U CN204878571U (en) | 2015-03-20 | 2015-03-20 | Ball screw device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204878571U true CN204878571U (en) | 2015-12-16 |
Family
ID=54822946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520161087.0U Expired - Fee Related CN204878571U (en) | 2015-03-20 | 2015-03-20 | Ball screw device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204878571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022599A (en) * | 2019-11-28 | 2020-04-17 | 北京自动化控制设备研究所 | Supporting device for planetary roller screw and electromechanical actuator with same |
-
2015
- 2015-03-20 CN CN201520161087.0U patent/CN204878571U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022599A (en) * | 2019-11-28 | 2020-04-17 | 北京自动化控制设备研究所 | Supporting device for planetary roller screw and electromechanical actuator with same |
| CN111022599B (en) * | 2019-11-28 | 2021-06-08 | 北京自动化控制设备研究所 | Supporting device for planetary roller screw and electromechanical actuator with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20210320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |