CN202894878U - Bracket device for long lead screw - Google Patents
Bracket device for long lead screw Download PDFInfo
- Publication number
- CN202894878U CN202894878U CN 201220578179 CN201220578179U CN202894878U CN 202894878 U CN202894878 U CN 202894878U CN 201220578179 CN201220578179 CN 201220578179 CN 201220578179 U CN201220578179 U CN 201220578179U CN 202894878 U CN202894878 U CN 202894878U
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- CN
- China
- Prior art keywords
- lead screw
- sliding sleeve
- bracket device
- rollers
- roller
- 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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Abstract
The utility model relates to a bracket device for a long lead screw. The bracket device is used for the lead screw transmission of an X axis of a large-scale gantry machining center. According to the bracket device, a sliding sleeve is arranged in a mounting base; a guide rod and a spiral compression spring are arranged in the sliding sleeve; roller mounting bases are arranged on the sliding sleeve symmetrically; rollers I pass through bearings I and are arranged on the roller mounting bases by shafts I, and rollers II pass through bearings II and are arranged on the roller mounting bases by shafts II; the two rollers II press parts on the sliding sleeve under the action of a left inverted trapezoid pressing plate and a right inverted trapezoid pressing plate which are arranged on left and right sides of a workbench nut base, so that a nut on a workbench passes through; and after the nut passes through, the parts on the sliding sleeve restore to the original positions upwards under the action of the elastic force of the spiral compression spring, and the rollers I continue to lift a ball lead screw to prevent the lead screw from hanging down. The bracket device is simple in structure, the problem that the lead screw hangs down can be solved effectively, the service life of the lead screw is prolonged, and the positioning accuracy of the lead screw is improved.
Description
Technical field
The utility model relates to the numerical control machine tool technique field, is a kind of long lead screw bracket system that adopts spring to combine, be used for numerical control gantry machining center with roller specifically.
Background technology
At present, the transmission of known numerical control gantry machining center X-axis mainly contains lead screw transmission and rack-and-pinion transmission dual mode.It is unrestricted that the advantage of the rack-and-pinion kind of drive is mainly haul distance, and shortcoming is complex structure, and manufacturing and maintenance cost are higher.The advantage of lead screw transmission mode mainly is that structure is simpler, manufacturing and maintenance cost are lower, but because long stroke leading screw is because of gravity sag, cause leading screw to beat greatly, easy to wear, can only be used for the short stroke occasion, use limitation large, can't adapt to the development trend that modern numerical control gantry machining center maximizes.
Summary of the invention
In order to overcome sagging leading screw shake and the larger problem of wearing and tearing of causing of existing numerical control gantry machining center X-axis leading screw, goal of the invention of the present utility model is to provide a kind of long lead screw bracket system, to get rid of the shake of long screw sagging and caused leading screw thereof and wearing and tearing, reach the service life that prolongs leading screw and nut, enlarge the scope that large-sized gantry machining center X-axis adopts the lead screw transmission form.
For achieving the above object, in the mount pad of the present utility model slip cap is housed, guide post and spiral compression spring are contained in the slip cap, symmetry is equipped with the roller mount pad on the slip cap, roller one is contained on the roller mount pad by bearing in the lump warp beam one, and roller two is contained on the roller mount pad by bearing two and warp beam two.
Usual condition, two rollers are lifted at the ball screw middle part and are being held in the palm screw mandrel, prevent that screw mandrel is sagging; When movable workbench, to roll at inverted trapezoidal left pressing plate and the right pressing plate of workbench nut seat both sides and oppress left and right roller, the above part of slip cap moves down, and the feed screw nut is passed through; Under the effect of spiral compression spring, move on the above part of slip cap afterwards, two rollers continue to lift ball screw, in case screw mandrel is sagging.
The utility model compared with prior art, carriage adopts roller to lift feed screw apparatus, calculate the strong spiral Compress Spring parameter of actual employing by actual leading screw diameter and length gauge, can effectively offset the sagging distortion that leading screw produces because of gravity, roller contacts with leading screw and is rolling friction simultaneously, and resistance and leading screw wearing and tearing are minimum.Simple in structure, can effectively solve the sagging problem of beating of leading screw, improve the screw mandrel rotating speed; Prolong simultaneously the service life of leading screw, improved the leading screw running accuracy.
Description of drawings
Fig. 1 is three-dimensional structure diagram of the present utility model.
Fig. 2 is the cutaway view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 2.
The specific embodiment
As Fig. 1, Fig. 2, Fig. 3, shown in, mount pad 1 is fixed on the lathe bed base, slip cap 3 is housed in the mount pad 1, guide post 4 and strong spiral Compress Spring 2 are contained in the slip cap 3, spiral compression spring 2 is enclosed within on the guide post 4, for preventing rotating, symmetry has guide key groove on slip cap 3, and the holding screw on the mount pad 1 leads in keyway; Symmetry is equipped with roller mount pad 5 on the slip cap 3, and roller 1 is contained on the roller mount pad 5 by bearing 1 and warp beam 1, and roller 1 is lifted the leading screw surface, effectively offsets sagging that gravity produces; Roller 2 10 is contained on the roller mount pad 5 by bearing 26 and warp beam 29; Left pressing plate 12 and right pressing plate 13 are installed in the both sides of workbench nut seat, when the movable workbench feed screw nut passes through bracket system, be installed in the roller 2 10 that inverted trapezoidal shape left pressing plate 12 on the workbench and right pressing plate 13 are depressed the carriage both sides gradually, the above part that is installed in slip cap 3 moves down, when the bottom of left pressing plate 12 and right pressing plate 13 contacts with the roller 2 10 of carriage both sides, carriage is in extreme lower position, and feed screw nut is passed through.Nut overlaps 3 upward slidings by rear effect lower slider at spiral compression spring 2, and roller 1 is lifted leading screw again, and so far, an operation cycle is finished.
Claims (1)
1. long lead screw bracket system, it is characterized in that: slip cap (3) is housed in the mount pad (1), guide post (4) and spiral compression spring (2) are contained in the slip cap (3), the upper symmetry of slip cap (3) is equipped with roller mount pad (5), roller one (8) is contained on the roller mount pad (5) by bearing one (11) and warp beam one (7), and roller two (10) is contained on the roller mount pad (5) by bearing two (6) and warp beam two (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578179 CN202894878U (en) | 2012-11-06 | 2012-11-06 | Bracket device for long lead screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578179 CN202894878U (en) | 2012-11-06 | 2012-11-06 | Bracket device for long lead screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202894878U true CN202894878U (en) | 2013-04-24 |
Family
ID=48115594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220578179 Expired - Fee Related CN202894878U (en) | 2012-11-06 | 2012-11-06 | Bracket device for long lead screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202894878U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692281A (en) * | 2013-12-26 | 2014-04-02 | 江西中船航海仪器有限公司 | Lead screw transmission stabilizing support device |
| CN107830139A (en) * | 2017-11-27 | 2018-03-23 | 安徽戎发冲压机器人有限公司 | Leading screw antihunting lifting apparatus |
| CN111774889A (en) * | 2020-07-21 | 2020-10-16 | 江苏宝诚重工科技有限公司 | From avoiding formula lead screw and preventing scratching bracket |
-
2012
- 2012-11-06 CN CN 201220578179 patent/CN202894878U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692281A (en) * | 2013-12-26 | 2014-04-02 | 江西中船航海仪器有限公司 | Lead screw transmission stabilizing support device |
| CN103692281B (en) * | 2013-12-26 | 2016-08-17 | 江西中船航海仪器有限公司 | A kind of screw rod transmission stable support device |
| CN107830139A (en) * | 2017-11-27 | 2018-03-23 | 安徽戎发冲压机器人有限公司 | Leading screw antihunting lifting apparatus |
| CN111774889A (en) * | 2020-07-21 | 2020-10-16 | 江苏宝诚重工科技有限公司 | From avoiding formula lead screw and preventing scratching bracket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG ZHAOSHAN MACHINE TOOL CO., LTD. Free format text: FORMER OWNER: XIANGFAN MACHINE TOOL CO., LTD. OF ZHAOSHAN GROUP Effective date: 20130902 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 441116 XIANGFAN, HUBEI PROVINCE TO: 311801 SHAOXING, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130902 Address after: 311801 Zhejiang city of Zhuji province Zhu Cun Huan East Street Patentee after: Zhejiang Zhaoshan Machine Tool Co., Ltd. Address before: 441116, Xiangyang, Xiangfan Province, Zhou District, group town, Hubei Industrial Park Patentee before: Xiangfan Machine Tool Co.,Ltd. Of Zhaoshan Group |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20161106 |