CN102278445A - Drive unit for lead screw - Google Patents
Drive unit for lead screw Download PDFInfo
- Publication number
- CN102278445A CN102278445A CN2011101582167A CN201110158216A CN102278445A CN 102278445 A CN102278445 A CN 102278445A CN 2011101582167 A CN2011101582167 A CN 2011101582167A CN 201110158216 A CN201110158216 A CN 201110158216A CN 102278445 A CN102278445 A CN 102278445A
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- China
- Prior art keywords
- screw
- screw mandrel
- lead screw
- worm gear
- key
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- 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.)
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Abstract
The invention relates to a drive unit for a lead screw. The drive unit comprises a stand, a gearbox is arranged on the stand, mutually matched worm wheel and worm are arranged in the gear box, the inner wall of the worm wheel is smooth and is provided with a key, the worm wheel is connected with the lead screw, the upper part of the lead screw is arranged in the worm wheel, the outer wall of the upper part of the lead screw is smooth and is provided with a key hole, the key hole penetrates through the upper end of the lead screw, the key is arranged in the key hole, the outer wall of the lower part of the lead screw is provided with screw thread, a shaft sleeve is sleeved on the lower part of the lead screw and is connected with the lead screw through the screw thread, and the shaft sleeve is arranged on the stand. The drive unit disclosed by the invention is suitable for driving the lead screw to move up and down and can stabilize the movement of the lead screw.
Description
Technical field
The present invention relates to a kind of screw rod driving device that screw mandrel rotates that is used to drive.
Background technique
Present employed screw rod driving device, its structure comprises frame, and frame is provided with speed reducer, and speed reducer inside is provided with worm gear and the worm screw that cooperatively interacts, and worm gear is provided with internal thread, and screw mandrel is arranged in the worm gear, and the screw thread of screw mandrel is meshed with internal thread.Its working principle is: worm screw is rotated under the driving of motor, and the rotation of worm screw drives worm gear and rotates, and the rotation of worm gear makes screw mandrel move up and down by screw thread in the inside of worm gear.The shortcoming of above-mentioned screw rod driving device is: there is certain interval in the threaded connection place between worm screw and the screw mandrel unavoidably because accuracy of manufacturing and worm gear and position of bearings quality of fit are not enough, can cause the instability of screw mandrel motion in the running.
Summary of the invention
Technical problem to be solved by this invention is: a kind of screw rod driving device that can make the screw mandrel motion stabilization is provided.
For addressing the above problem, the technical solution used in the present invention is: screw rod driving device, comprise frame, frame is provided with speed reducer, speed reducer inside is provided with worm gear and the worm screw that cooperatively interacts, be provided with key in the inner wall smooth of described worm gear and the inwall, worm gear connects screw mandrel, and the top of screw mandrel is arranged in the worm gear, and the external wall of upper portion of screw mandrel is smooth and be provided with keyhole, keyhole runs through the upper end of screw mandrel, key is arranged in the keyhole, and the bottom outer wall of screw mandrel is provided with screw thread, and the bottom of screw mandrel is arranged with axle sleeve, axle sleeve is connected with screw mandrel by screw thread, and axle sleeve is arranged on the frame.
Described key is by being bolted to worm gear inside.
The invention has the beneficial effects as follows: above-mentioned screw rod driving device, simple in structure, easy to use.Be slidingly connected owing to change into by being threaded between worm gear and the screw mandrel, eliminate the movement warp that cooperations such as speed reducer worm gear and bearing bring, can make the screw mandrel motion stabilization.
Description of drawings
Fig. 1 is the sectional structure schematic representation of screw rod driving device of the present invention;
Among the figure: 1, frame, 2, speed reducer, 3, worm gear, 4, worm screw, 5, key, 6, bolt, 7, screw mandrel, 8, axle sleeve.
Embodiment
Below by specific embodiment screw rod driving device of the present invention is described in further detail.
As shown in Figure 1, screw rod driving device, comprise frame 1, frame 1 is provided with speed reducer 2, speed reducer 2 inside are provided with worm gear 3 and the worm screw 4 that cooperatively interacts, be provided with key 5 in the inner wall smooth of described worm gear 3 and the inwall, key 5 is fixed on worm gear 3 inside by bolt 6, and worm gear 3 connects screw mandrel 7, the top of screw mandrel 7 is arranged in the worm gear 3, the external wall of upper portion of screw mandrel 7 is smooth and be provided with keyhole, and keyhole runs through the upper end of screw mandrel 7, and key 5 is arranged in the keyhole, the bottom outer wall of screw mandrel 7 is provided with screw thread, the bottom of screw mandrel 7 is arranged with axle sleeve 8, and axle sleeve 8 is connected with screw mandrel 7 by screw thread, and axle sleeve 8 is fixed on the frame.
Working principle of the present invention is: worm screw 4 is rotated under the driving of motor, the rotation of worm screw 4 drives worm gear 3 and rotates, the rotation of worm gear 3 drives screw mandrel 7 in worm gear 3 inner rotation by key, after screw mandrel 7 rotates, because axle sleeve 8 is threaded with screw mandrel 7, and axle sleeve 8 is fixed on the frame, and the rotation of screw mandrel 7 makes screw mandrel 7 move up and down by screw thread in the inside of axle sleeve 8.Be slidingly connected owing to change into by being threaded between worm gear 3 and the screw mandrel 7, the movement warp that cooperations such as elimination speed reducer worm gear and bearing bring can make screw mandrel 7 motion stabilizations.
The above embodiments are the principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not is used to limit the present invention; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (2)
1. screw rod driving device comprises frame, and frame is provided with speed reducer, and speed reducer inside is provided with worm gear and the worm screw that cooperatively interacts.It is characterized in that: be provided with key in the inner wall smooth of described worm gear and the inwall, worm gear connects screw mandrel, the top of screw mandrel is arranged in the worm screw, the external wall of upper portion of screw mandrel is smooth and be provided with keyhole, and keyhole runs through the upper end of screw mandrel, and key is arranged in the keyhole, the bottom outer wall of screw mandrel is provided with screw thread, the bottom of screw mandrel is arranged with axle sleeve, and axle sleeve is connected with screw mandrel by screw thread, and axle sleeve is arranged on the frame.
2. screw rod driving device according to claim 1 is characterized in that: described key is by being bolted to worm gear inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101582167A CN102278445A (en) | 2011-06-12 | 2011-06-12 | Drive unit for lead screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101582167A CN102278445A (en) | 2011-06-12 | 2011-06-12 | Drive unit for lead screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102278445A true CN102278445A (en) | 2011-12-14 |
Family
ID=45104075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101582167A Pending CN102278445A (en) | 2011-06-12 | 2011-06-12 | Drive unit for lead screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102278445A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626759A (en) * | 2012-04-28 | 2012-08-08 | 嵊州市创宇机械科技有限公司 | Moving device for core knife and cutter of spring coiling machine |
| CN102671975A (en) * | 2012-05-04 | 2012-09-19 | 中冶南方工程技术有限公司 | Active airflow field control type dry planishing dust removal method |
| CN106382347A (en) * | 2015-07-01 | 2017-02-08 | 株式会社椿E和M | Linear actuator |
| CN109372974A (en) * | 2018-10-18 | 2019-02-22 | 九江精密测试技术研究所 | A kind of high-precision shafting with multiposition retaining mechanism |
| CN110671488A (en) * | 2019-11-04 | 2020-01-10 | 浙江大工驱动科技有限公司 | Two-way thrust bearing of transmission device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266283Y (en) * | 1996-08-08 | 1997-11-05 | 上海东方食品机械总厂 | Double-tub wrapper-forming machine |
| CN2428092Y (en) * | 2000-03-03 | 2001-05-02 | 中国人民解放军济南军区总医院 | Human-body lifting table of medical X-ray machine |
| CN202149189U (en) * | 2011-06-12 | 2012-02-22 | 江苏维达机械有限公司 | Screw rod driving device |
-
2011
- 2011-06-12 CN CN2011101582167A patent/CN102278445A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266283Y (en) * | 1996-08-08 | 1997-11-05 | 上海东方食品机械总厂 | Double-tub wrapper-forming machine |
| CN2428092Y (en) * | 2000-03-03 | 2001-05-02 | 中国人民解放军济南军区总医院 | Human-body lifting table of medical X-ray machine |
| CN202149189U (en) * | 2011-06-12 | 2012-02-22 | 江苏维达机械有限公司 | Screw rod driving device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626759A (en) * | 2012-04-28 | 2012-08-08 | 嵊州市创宇机械科技有限公司 | Moving device for core knife and cutter of spring coiling machine |
| CN102671975A (en) * | 2012-05-04 | 2012-09-19 | 中冶南方工程技术有限公司 | Active airflow field control type dry planishing dust removal method |
| CN102671975B (en) * | 2012-05-04 | 2014-11-26 | 中冶南方工程技术有限公司 | Active airflow field control type dry planishing dust removal method |
| CN106382347A (en) * | 2015-07-01 | 2017-02-08 | 株式会社椿E和M | Linear actuator |
| CN106382347B (en) * | 2015-07-01 | 2019-05-21 | 株式会社椿本链条 | Straight line makees motivation |
| CN109372974A (en) * | 2018-10-18 | 2019-02-22 | 九江精密测试技术研究所 | A kind of high-precision shafting with multiposition retaining mechanism |
| CN109372974B (en) * | 2018-10-18 | 2024-05-17 | 九江精密测试技术研究所 | High-precision shafting with multi-position locking mechanism |
| CN110671488A (en) * | 2019-11-04 | 2020-01-10 | 浙江大工驱动科技有限公司 | Two-way thrust bearing of transmission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111214 |