CN85205097U - Thread-gap automatic eliminating mechanism by screw separation - Google Patents
Thread-gap automatic eliminating mechanism by screw separation Download PDFInfo
- Publication number
- CN85205097U CN85205097U CN 85205097 CN85205097U CN85205097U CN 85205097 U CN85205097 U CN 85205097U CN 85205097 CN85205097 CN 85205097 CN 85205097 U CN85205097 U CN 85205097U CN 85205097 U CN85205097 U CN 85205097U
- Authority
- CN
- China
- Prior art keywords
- screw
- thread
- gap
- nut
- automatic eliminating
- 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.)
- Withdrawn
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model discloses a thread-gap automatic eliminating mechanism by screw separation which is used for the gearing devices of the various leading screw nuts. The utility model can automatically eliminate an assembly gap and an abrasion gap which are caused between the leading screw and the nut axial direction. The structure just like the show of the picture: a thrust pad is arranged between the double nut, a spring is used as motive power which can rotate the thrust pad, and the thrust pad and the screw bevel of the end face of the adjustment nut are used to separate the double nut; thereby, the thread-gap can be automatically eliminated. Compared with the present various thread-gap automatic eliminating mechanisms, the thread-gap automatic eliminating mechanism by screw separation no longer need adjustment after the abrasion. The utility model has the advantages of high reliability, simple structure and easy fabrication. If the thread-gap automatic eliminating mechanism by screw separation is used for the ball bearing screw rod pair, the pretightening force can be automatically compensated.
Description
The invention belongs to mechanical manufacturing field, in various feed screw nut transmission devices, be used for eliminating automatically leading screw and nut shaft to fit up gap and wearing and tearing post gap, to guarantee feed screw nut transmission transmission accuracy at any time.
The machinery type of known elimination thread pitch mainly contains:
1, regular adjustment type.During assembling that the thread pitch elimination is fastening then, regularly adjust according to the thread abrasion situation in the using process.The shortcoming of this kind mode is to adjust inconvenience.
2, automatic adjustment type.Directly act on spring, or promote voussoir, promote mode such as tooth bar with spring and make two nuts produce relative displacements or relatively rotate, reach the purpose of eliminating the gap with spring.The shortcoming of spring direct acting type is a job insecurity; Spring promotes voussoir and acts on the adjustment nut, causes easily and adjusts the nut deflection; And spring promotes the structure more complicated of tooth bar, and the space is difficult for arranging.
The objective of the invention is in order to overcome the shortcoming of above-mentioned variety of way, realize automatic, the reliable elimination of thread pitch.
Main points of the present invention are at set screw nut and adjust in the middle of the nut, but circular ring-shaped member---the pushing block that a wrapping wire thick stick rotates is set, pushing block with adjust on the end face that nut contacts with each other.Screw inclined plane direction on the screw inclined plane of each several disconnection that evenly distribute, two parts is opposite, fits mutually, relatively rotates then and must be separated from each other.Pushing block is rotation trend all the time under spring action, by the screw inclined plane effect on the end face, promote to adjust nut displacement vertically, reaches the purpose of automatic elimination thread pitch.
Fig. 1 eliminates thread pitch mechanism right elevation automatically for the spiral separation formula, and Fig. 2 is a plan view.
Pressure spring (1) is subjected to the adjusting of adjusting screw (2), fixing with nut (3) after obtaining required spring force, spring thrust acts on the pushing block (7), promoting pushing block (7) wrapping wire thick stick (4) rotates, pushing block promotes to adjust nut (9) axial displacement by the screw inclined plane on the end face, make and adjust nut (9) and set screw nut (5) axial separation, eliminate thread pitch, flat key (10) is used for restriction adjustment nut (9) and rotates.Set screw nut (5) is fixed on the joint sleeve (8) by screw (6), connects with Device Host.
The advantage of this mechanism is:
1, automatically eliminates thread pitch. Under the effect of this mechanism, the wearing and tearing that feed screw nut produces in operation process can be compensated at any time, thereby guaranteed at no time reason thread abrasion and reduce precision of screw nut driven pair, after equipment adopts this technology, can no longer regularly adjust feed screw nut.
2, it is little to keep pushing block to be the required spring force of rotation trend in the mechanism, and spring thrust acts on the screw thread after decomposing by screw inclined plane, in consequent screw thread friction can be controlled in more among a small circle.The power on the leading screw handwheel of being reflected to increases few and more stable, and needs are applied the ball screw pair of pretightening force, by regulating the pushing block pivotal position pretightening force is quantitatively controlled, and can be compensated pretightening force automatically.
3, the screw inclined plane on the pushing block has auto-lock function, but the assurance mechanism reliable operation can not produce loosening or knock-on.
4, simple and compact for structure, occupy little space, easily manufactured.
The present invention will make the transmission performance of screw-nut body necessarily be improved, and the transmission life-span obtains bigger raising, and therefore the feed screw nut drive technology will be applied even more extensively.
Claims (1)
- The spiral separation formula is eliminated thread pitch mechanism automatically, it comprises leading screw (4), set screw nut (5) and adjusts nut (9), the end face that it is characterized in that said adjustment nut one end is a screw inclined plane, between two nuts a pushing block (7), the end face of pushing block (7) one ends is a screw inclined plane, be meshed with the screw inclined plane of adjusting nut (9), place spring (1) along the tangent direction of pushing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85205097 CN85205097U (en) | 1985-11-26 | 1985-11-26 | Thread-gap automatic eliminating mechanism by screw separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85205097 CN85205097U (en) | 1985-11-26 | 1985-11-26 | Thread-gap automatic eliminating mechanism by screw separation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85205097U true CN85205097U (en) | 1987-05-06 |
Family
ID=4800255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85205097 Withdrawn CN85205097U (en) | 1985-11-26 | 1985-11-26 | Thread-gap automatic eliminating mechanism by screw separation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85205097U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094951A (en) * | 2010-12-21 | 2011-06-15 | 中国科学院国家天文台南京天文光学技术研究所 | Transmission device of precise displacement actuator |
| CN102305274A (en) * | 2010-12-24 | 2012-01-04 | 湖北汽车工业学院 | Method for eliminating return difference automatically by using double nuts for lead screw nut pair |
| CN101585327B (en) * | 2008-05-19 | 2012-09-19 | Ims传动装置有限公司 | Screw rod bearing assembly for a seat longitudianal adjustment and transmission mechanism |
| CN108730455A (en) * | 2018-06-11 | 2018-11-02 | 顾丽清 | The compensation device of precision cam transmission mechanism |
| CN108757868A (en) * | 2018-06-11 | 2018-11-06 | 顾丽清 | A kind of self-checking device of precision cam transmission mechanism |
| CN111805284A (en) * | 2020-07-06 | 2020-10-23 | 重庆华中数控技术有限公司 | Split-transmission five-axis high-precision machining system |
| CN112973000A (en) * | 2019-12-12 | 2021-06-18 | 清河国际股份有限公司 | Weight piece gap adjusting module of weight training equipment |
-
1985
- 1985-11-26 CN CN 85205097 patent/CN85205097U/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585327B (en) * | 2008-05-19 | 2012-09-19 | Ims传动装置有限公司 | Screw rod bearing assembly for a seat longitudianal adjustment and transmission mechanism |
| CN102094951A (en) * | 2010-12-21 | 2011-06-15 | 中国科学院国家天文台南京天文光学技术研究所 | Transmission device of precise displacement actuator |
| CN102094951B (en) * | 2010-12-21 | 2013-01-09 | 中国科学院国家天文台南京天文光学技术研究所 | Transmission device of precise displacement actuator |
| CN102305274A (en) * | 2010-12-24 | 2012-01-04 | 湖北汽车工业学院 | Method for eliminating return difference automatically by using double nuts for lead screw nut pair |
| CN108730455A (en) * | 2018-06-11 | 2018-11-02 | 顾丽清 | The compensation device of precision cam transmission mechanism |
| CN108757868A (en) * | 2018-06-11 | 2018-11-06 | 顾丽清 | A kind of self-checking device of precision cam transmission mechanism |
| CN112973000A (en) * | 2019-12-12 | 2021-06-18 | 清河国际股份有限公司 | Weight piece gap adjusting module of weight training equipment |
| CN111805284A (en) * | 2020-07-06 | 2020-10-23 | 重庆华中数控技术有限公司 | Split-transmission five-axis high-precision machining system |
| CN111805284B (en) * | 2020-07-06 | 2022-03-15 | 重庆华中数控技术有限公司 | Split-transmission five-axis high-precision machining system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5913940A (en) | Adjustable preload anti-backlash nut | |
| US5232280A (en) | Twin conical screw extruder provided with pressurizing members | |
| EP0831250A3 (en) | Linear actuator | |
| GB2044551A (en) | Electric drive unit gearing | |
| CN85205097U (en) | Thread-gap automatic eliminating mechanism by screw separation | |
| GB1452491A (en) | Screw-type actuators | |
| CN210879493U (en) | Screw tightening mechanism with controllable inclination angle alignment | |
| US4712770A (en) | Electrical tensioning device for orthopedic adjustment means | |
| US1338377A (en) | Mechanical movement | |
| CN209925588U (en) | Gap eliminating device for gear and rack transmission | |
| SU1393958A1 (en) | Ball-screw transmission | |
| CN212598675U (en) | Anti-reverse feeding power mechanism of cold header | |
| CN112388565B (en) | Screw tightening mechanism with controllable inclination angle alignment and operation method | |
| CN209839130U (en) | Structure for manually adjusting and reducing meshing clearance of worm and gear | |
| CN108367415A (en) | Power operated wrench with angle gear | |
| CN2426039Y (en) | Automatic gap-eliminating roller guide-screw | |
| CN218817892U (en) | Double-worm type driver | |
| CN100346090C (en) | Worm gear and worm driving mechanism | |
| CN2398479Y (en) | Planetary screw driving device | |
| CN213575486U (en) | Gear meshing transmission gap adjusting mechanism | |
| CN221170617U (en) | Synchronous belt tensioning mechanism | |
| SU1633201A1 (en) | Self establishing regulated double wave generator | |
| SU1119858A1 (en) | Mechanism for adjustment of closed height of press | |
| JPH0211433Y2 (en) | ||
| JPS6242198Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |