CN1031754A - A kind of screw mechanism - Google Patents
A kind of screw mechanism Download PDFInfo
- Publication number
- CN1031754A CN1031754A CN 88106419 CN88106419A CN1031754A CN 1031754 A CN1031754 A CN 1031754A CN 88106419 CN88106419 CN 88106419 CN 88106419 A CN88106419 A CN 88106419A CN 1031754 A CN1031754 A CN 1031754A
- Authority
- CN
- China
- Prior art keywords
- nut
- screw
- cam cover
- screw rod
- cam
- 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.)
- Granted
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The invention provides a kind of screw machine, it is made up of component such as screw axis, nut, cam mechanism, clutch mechanism, position-limit mechanisms, it is characterized in that nut and screw axis radially (face) in total travel, break away from or mesh, when nut and screw axis engagement, can equally with common screw mechanism carry out continuous power screw and be fastenedly connected, when nut and screw axis disengaging, can realize axially moving freely of nut and screw rod.The disengaging of nut and screw axis or engagement only need can realize by the rotation of screw axis.
Description
The present invention relates to a kind of mechanical mechanism, particularly a kind of can mechanically program-controlled realization nut and screw rod radially from, the screw mechanism that closes.
Traditional screw mechanism is to utilize screw rod, the nut of fixing pairing to be threaded and transmission, and screw rod and nut relatively rotate a week, and moving to axial of nut and screw rod has only a pitch, and travelling speed is slow, inefficiency.And the screw-drive mechanism of the half nuts form of prior art, though can realize the clutch of nut and screw rod, but complex structure, radial dimension are bigger, particularly need to be provided with the folding of independent control system control nut, are difficult to simple mechanical structure realization mechanically program-controlled.
Task of the present invention provides a kind of novel screw mechanism that overcomes above-mentioned prior art screw mechanism defective, and it has mechanically program-controlled property, only need radially (face) that sense of rotation by the control screw rod can realize nut and screw rod from, close.When nut engages with screw rod, can equally with conventional helical mechanism carry out transmission and be fastenedly connected, when nut and screw rod break away from, can realize axially moving freely of nut and screw rod.
Main points of the present invention are: with the screw rod nut engaged be the cam cover nut (also cylindrical overlaps nut engaged with cam) of inside and outside circle (or screw thread and cylindrical) decentraction, the endoporus of cam cover nut is greater than the external diameter of screw rod (also the normal nut of opening), when screw rod rotates, under the drive of clutch mechanism, cam cover nut (cam cover) can rotate within the specific limits around the center of cylindrical, the central position of endoporus (screw thread) is changed, the screw thread of nut with the variation of endoporus (screw thread) central position with radially (face) engagement or break away from of screw flight, when nut and screw engages, rotating screw bolt can equally with conventional helical mechanism carry out transmission and be fastenedly connected, when nut and screw rod disengaging, can realize axially moving freely of nut and screw rod.The position-limit mechanism that control relative nut seat of nut and screw rod slewing area are arranged on cam cover nut is to guarantee the reliable clutch of nut and screw rod.
Accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4 are several embodiments of the present invention, engage accompanying drawing 1 below working procedure of the present invention is described in detail in detail:
Present embodiment is by end axle sleeve (1), taper pin (2), fixedly stage body (3), movable stage body (4), cam overlap nut (5), contrate-gear-type clutch (6), lead key (7), clutch spring (8), jump ring (9), screw axis (10), position-limited nail (11), positioning spring component such as (13) and form.
The screw axis (10) that has a keyway is installed in fixedly on the stage body (3), the cylindrical of cam cover nut (5) cooperates with the hole on the movable stage body (4), cam cover nut (5) can freely rotate relative to screw axis (10) and movable stage body (4), on cam cover nut (5), be processed with stroke limit groove (12), by being installed in the slewing area of position-limited nail (11) restriction cam cover nut (5) the movable relatively stage bodies (4) on the movable stage body (4).On the end of cam cover nut (5), the teeth groove that cooperates with contrate-gear-type clutch (6) is arranged, contrate-gear-type clutch (6) cooperates with screw axis (10) by lead key (7), contrate-gear-type clutch (6) can axially be free to slide along screw axis (10), rotating screw bolt axle (10) can drive cam cover nut by contrate-gear-type clutch (6) and rotate, when cam cover nut (5) is limited by position-limited nail (11) and restraining groove (12) and can not be rotated further the time, contrate-gear-type clutch (6) surmounts cam cover (5) overload, and the size of overload power is determined by the pressure of end tooth shape and clutch spring (8).
When needing the position of quick adjustment activity stage body, clockwise direction rotating screw bolt axle (10) (referring to the A-A section), under the drive of contrate-gear-type clutch (6), cam cover nut (5) is towards its top dead center (be cam cover nut inner hole center line peak and with the screw axis dead in line or near overlapping) rotation, cam cover nut (5) inner hole centreline raises, the screw thread of the screw thread of screw axis (10) and cam cover nut (5) breaks away from gradually, when cam cover nut arrives top dead center, be subjected to the restriction of position-limited nail (11) and restraining groove (12), cam cover nut (5) no longer is rotated further (contrate-gear-type clutch (6) overload surmounts), so can guarantee screw axis (10) and cam cover nut (5) abundant disengaging (so the time cam cover nut (5) inner hole centreline and the endoporus of the dead in line of screw axis (10) and nut greater than the external diameter of screw rod), apply active force along screw axial to movable stage body this moment, can realize the quick adjustment of traveling table body position.
When needs are used screw drives activity stage body, counterclockwise direction rotating screw bolt axle (10), under the drive of contrate-gear-type clutch (6), cam cover nut (5) towards lower dead center (be the inner hole centreline of cam cover nut (5) touch the bottom and with screw axis axis generation maximum deviation) rotate, cam cover nut (5) inner hole centreline reduces, the screw thread of the screw thread of screw axis (10) and cam cover nut (5) meshes gradually, when cam cover nut (5) arrives lower dead center, be subjected to the restriction of position-limited nail (11) and restraining groove (12), cam cover nut (5) no longer is rotated further (the contrate-gear-type clutch overload surmounts), so can guarantee effective engagement that screw axis (10) and cam overlap nut (5).At this moment, be rotated further screw axis (10), can as conventional helical mechanism, realize Continuous Drive movable stage body.
The effect of positioning spring (13) is to make screw axis reserve certain axial clearance, so that at movable stage body during near object, nut and screw axis still can mesh smoothly.
Accompanying drawing 2 is another kind of application of the present invention, it is a kind of compact spiral press machine, when nut and screw engages, can as common screw press, exert pressure to workpiece, when making nut and screw rod, the rotating screw bolt axle breaks away from, can drive screw axis by extension spring and reset rapidly, in the present embodiment, form by finger (14) on the nut and spring parts such as (15) by being installed in for its clutch.
Accompanying drawing 3 is a kind of structures of cam of the present invention cover nut, and the cylindrical of nut cooperates with the cam cover, nut itself but complete nut or opening nut, the internal orifice dimension of opening nut can greater than or be not more than the external diameter of the screw rod of cooperation with it.
Accompanying drawing 4 is another structure of cam cover nut of the present invention, the cylindrical of cam ring cover (19) cooperates with nut seat (16), endoporus cooperates with opening nut (18), cam cover (19) can freely rotate relative to nut seat (16) and opening nut (18), its slewing area is subjected to by nut seat (16) and is connected in pin (22) restriction on the opening nut (18), when the cam cover turns to slack position (as E-E section in the accompanying drawing 4), opening nut (18) is under the effect of spring (17), radially divided (can break away from) with screw axis, when the cam cover turns to raised position (as the close pin (22) of N face in the accompanying drawing 4), opening nut (18) is closed (can mesh with screw axis) under action of cam, the opening of opening nut (18), closing only needs cam cover (19) rotation can realize for 90 °.The rotation of cam cover (19) can be driven through the end tooth (20) that cam puts by contrate-gear-type clutch (referring to accompanying drawing 1).Jump ring (21) is spacing jump ring.The piece number of present embodiment split shed nut and cam number of poles also can be greater or less than two.
The invention has the advantages that: can mechanically program-controlled realization nut and radially (face) of screw rod from, close. Radially (face) of nut and screw rod from, close independent control system need not be set, only need the rotation direction of control screw rod can realize having preferably mechanically program-controlled property. When the engagement of nut and screw rod, can equally with conventional helical mechanism carry out transmission and be fastenedly connected, when nut and screw rod disengaging, can realize axially moving freely of nut and screw rod. Nut and screw shaft screw thread can all-round engagements, and have simple in structure, mechanism size is little, the characteristics of reliable operation.
Claims (4)
1, a kind of screw mechanism, it is made up of component such as screw rod, cam cover nut, clutch mechanism, position-limit mechanisms, it is characterized in that: by cam cover nut rotate realization nut thread and screw flight radially (face) from, the screw mechanism that closes.
2, screw mechanism according to claim 1 is characterized in that said cam cover nut is that endoporus is processed with screw thread, inside and outside circle (screw thread and cylindrical) decentraction and the internal diameter nut greater than the screw axis external diameter that cooperates with it.
3, screw mechanism according to claim 1, it is characterized in that said cam cover nut be cylindrical be combined with the cam cover and when the cam cover rotates its screw thread can with the screw axis screw thread radially (face) from, the nut that closes, nut itself but complete nut or opening nut.
4, screw mechanism according to claim 1 is characterized in that said cam cover nut comprises slewing area, installation or the processing position-limited nail or the restraining groove on cam cover nut of control cam cover relative nut bearing of nut and screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106419 CN1009129B (en) | 1988-09-07 | 1988-09-07 | Spiral mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106419 CN1009129B (en) | 1988-09-07 | 1988-09-07 | Spiral mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031754A true CN1031754A (en) | 1989-03-15 |
| CN1009129B CN1009129B (en) | 1990-08-08 |
Family
ID=4834230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88106419 Expired CN1009129B (en) | 1988-09-07 | 1988-09-07 | Spiral mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1009129B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607627A (en) * | 2012-03-01 | 2012-07-25 | 四川大学 | Aligning device for Michelson interference image spacing screw |
| CN102673000A (en) * | 2012-06-08 | 2012-09-19 | 镇江市锻压机床厂 | Connecting device for flywheel and screw of screw press |
| CN102734416A (en) * | 2012-06-20 | 2012-10-17 | 无锡宇吉科技有限公司 | Screw rod |
| CN103821893A (en) * | 2014-02-26 | 2014-05-28 | 南通原亚精密机械有限公司 | Novel screw rod |
| CN108594069A (en) * | 2018-04-08 | 2018-09-28 | 苏州银蕨电力科技有限公司 | A kind of improved intelligent grid sensing device |
-
1988
- 1988-09-07 CN CN 88106419 patent/CN1009129B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607627A (en) * | 2012-03-01 | 2012-07-25 | 四川大学 | Aligning device for Michelson interference image spacing screw |
| CN102673000A (en) * | 2012-06-08 | 2012-09-19 | 镇江市锻压机床厂 | Connecting device for flywheel and screw of screw press |
| CN102734416A (en) * | 2012-06-20 | 2012-10-17 | 无锡宇吉科技有限公司 | Screw rod |
| CN103821893A (en) * | 2014-02-26 | 2014-05-28 | 南通原亚精密机械有限公司 | Novel screw rod |
| CN108594069A (en) * | 2018-04-08 | 2018-09-28 | 苏州银蕨电力科技有限公司 | A kind of improved intelligent grid sensing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1009129B (en) | 1990-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH02107822A (en) | Relative angle regulator of transmission-coupled two shaft | |
| CN107725705A (en) | A kind of double remaining electromechanical actuators of linear antiseize | |
| CN110107664A (en) | A kind of big L/D ratio nut inverse type planetary roller screw | |
| CN101793309A (en) | Planet gear speed reducer with small tooth difference and power wrench with large torque | |
| CN1031754A (en) | A kind of screw mechanism | |
| CN1048440A (en) | Planetary gear train movable joint strand absorbs the device and the installation method in gap continuously | |
| CN211901481U (en) | Rolling friction trapezoidal lead screw | |
| CN208621970U (en) | A kind of heliostat linear actuating device applied to tower type solar photo-thermal power generation | |
| CN209540161U (en) | The arbitrarily adjustable pneumatic actuator of air to close type aperture | |
| US4932511A (en) | Rotary travel limit stop apparatus | |
| IE57130B1 (en) | Automatic tapping device | |
| CN108637659A (en) | The torque limiter that a kind of one direction in the turn of the screw robot is protected | |
| CN85205097U (en) | Thread-gap automatic eliminating mechanism by screw separation | |
| US3789678A (en) | Screw drive means using auxiliary meshing rollers | |
| JP2012510037A (en) | Linear actuator | |
| CN201373050Y (en) | Automobile automatic adjusting arm | |
| CN1045638A (en) | A kind of screw mechanism | |
| CN2179805Y (en) | Radial feed mechanism for wheels of jig grinding machine | |
| CN210660982U (en) | Improved locknut | |
| CN109058393A (en) | Eccentrically arranged type mechanical reduction gear | |
| CN1051603C (en) | Speed varying mechanism and its processing method | |
| CN208138352U (en) | A kind of torque limiter of the variable critical torque based on Acceleration Control | |
| CN207034134U (en) | A kind of worm screw of diesel engine | |
| DE112008003989T5 (en) | Linear motion mechanism of corrugation type and holding mechanism | |
| RU1768276C (en) | Device for disassembling crushing head of cone crusher |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |