CN108708951A - A kind of linear motion and rotating motion transformer of coaxial line - Google Patents
A kind of linear motion and rotating motion transformer of coaxial line Download PDFInfo
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- CN108708951A CN108708951A CN201810652150.9A CN201810652150A CN108708951A CN 108708951 A CN108708951 A CN 108708951A CN 201810652150 A CN201810652150 A CN 201810652150A CN 108708951 A CN108708951 A CN 108708951A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/2003—Screw mechanisms with arrangements for taking up backlash
- F16H25/2006—Screw mechanisms with arrangements for taking up backlash with more than one nut or with nuts consisting of more than one bearing part
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
Description
技术领域technical field
本发明涉及传动技术领域，尤其涉及一种同轴线的直线运动和旋转运动转换器。The invention relates to the field of transmission technology, in particular to a coaxial linear motion and rotary motion converter.
背景技术Background technique
在工农业生产、国防、航空、航天等领域，经常需要将旋转运动变成直线运动，或将直线运动变成旋转运动。 根据应用场合的不同，人们开发出各种变换装置或设备来满足上述要求，例如齿轮齿条、链条、钢丝绳、传动带、丝杆、曲柄连杆、滑块机构、凸轮顶杆机构等。这些变换装置都存在两个传动端轴线不重合、结构松散、体积大等问题。In the fields of industrial and agricultural production, national defense, aviation, aerospace and other fields, it is often necessary to change rotary motion into linear motion, or convert linear motion into rotary motion. According to different applications, people have developed various conversion devices or equipment to meet the above requirements, such as rack and pinion, chain, wire rope, transmission belt, screw rod, crank connecting rod, slider mechanism, cam ejector mechanism, etc. These conversion devices all have problems such as non-coincidence of axes of the two transmission ends, loose structure, and large volume.
发明内容Contents of the invention
本发明的目的是为了解决现有技术中存在的缺点，而提出的一种同轴线的直线运动和旋转运动转换器。The purpose of the present invention is to solve the shortcomings in the prior art, and propose a coaxial linear motion and rotary motion converter.
为了实现上述目的，本发明采用了如下技术方案：In order to achieve the above object, the present invention adopts the following technical solutions:
一种同轴线的直线运动和旋转运动转换器，包括壳体、旋转螺母、直线导杆、第一轴承、第二轴承和端盖，其中，A coaxial linear motion and rotary motion converter, including a housing, a rotating nut, a linear guide rod, a first bearing, a second bearing and an end cover, wherein,
所述壳体设置为空心筒状结构，其一端开孔并设置有第一轴承挡边，另一端敞口并设置有内螺纹；The housing is configured as a hollow cylindrical structure, one end of which is open and provided with a first bearing rib, and the other end is open and provided with an internal thread;
所述端盖设置在壳体的敞口端，所述端盖外周设置有与内螺纹配合的外螺纹，所述端盖内侧端设置有第二轴承挡边；The end cover is arranged on the open end of the housing, the outer circumference of the end cover is provided with an external thread matched with the internal thread, and the inner end of the end cover is provided with a second bearing rib;
所述旋转螺母设置在壳体内且其一端伸出壳体，所述旋转螺母外周设置有一环形凸起，所述第一轴承和第二轴承套设在旋转螺母上且分别位于环形凸起的两侧；The rotating nut is arranged in the housing and one end thereof protrudes from the housing. An annular protrusion is arranged on the outer periphery of the rotating nut. The first bearing and the second bearing are sleeved on the rotating nut and are respectively located at two ends of the annular protrusion. side;
所述直线导杆一端与直线运动端连接，另一端设置有螺纹，所述直线导杆通过螺纹与旋转螺母连接。One end of the linear guide rod is connected to the linear movement end, and the other end is provided with a thread, and the linear guide rod is connected to the rotating nut through the thread.
优选的，所述旋转螺母的螺纹设置为大螺距螺纹，其螺纹升角大于摩擦角。Preferably, the thread of the rotating nut is set as a large-pitch thread, and its thread lead angle is greater than the friction angle.
优选的，所述直线导杆上的螺纹也设置为大螺距螺纹，其螺纹升角大于摩擦角。Preferably, the thread on the linear guide rod is also set as a large-pitch thread, and the lead angle of the thread is greater than the friction angle.
优选的，所述端盖的外侧端设置有多个扇形槽。Preferably, the outer end of the end cap is provided with a plurality of fan-shaped grooves.
优选的，所述旋转螺母伸出壳体的一端连接旋转运动端。Preferably, one end of the rotating nut protruding from the housing is connected to the rotating end.
优选的，所述第一轴承和第二轴承均设置为角接触球轴承。Preferably, both the first bearing and the second bearing are set as angular contact ball bearings.
本发明的有益效果：Beneficial effects of the present invention:
本发明可以实现同轴线的直线运动和旋转运动之间相互转换，结构紧凑、体积小、适用范围广。The invention can realize mutual conversion between linear motion and rotary motion of the coaxial line, and has compact structure, small volume and wide application range.
附图说明Description of drawings
图1为本发明提出的一种同轴线的直线运动和旋转运动转换器的结构示意图；Fig. 1 is a schematic structural view of a coaxial linear motion and rotary motion converter proposed by the present invention;
图2为本发明提出的一种同轴线的直线运动和旋转运动转换器的壳体结构示意图；Fig. 2 is a schematic diagram of the shell structure of a coaxial linear motion and rotary motion converter proposed by the present invention;
图3为本发明提出的一种同轴线的直线运动和旋转运动转换器的旋转螺母结构示意图；Fig. 3 is a structural schematic diagram of a rotating nut of a coaxial linear motion and rotary motion converter proposed by the present invention;
图4为本发明提出的一种同轴线的直线运动和旋转运动转换器的直线导杆结构示意图；Fig. 4 is a schematic structural diagram of a linear guide rod of a coaxial linear motion and rotary motion converter proposed by the present invention;
图5为本发明提出的一种同轴线的直线运动和旋转运动转换器的端盖结构示意图；Fig. 5 is a schematic diagram of the end cover structure of a coaxial linear motion and rotary motion converter proposed by the present invention;
图6为本发明提出的一种同轴线的直线运动和旋转运动转换器的端盖侧视结构示意图。Fig. 6 is a side view structure diagram of an end cover of a coaxial linear motion and rotary motion converter proposed by the present invention.
图中：1壳体、11第一轴承挡边、12内螺纹、2旋转螺母、21环形凸起、3直线导杆、4第一轴承、5第二轴承、6端盖、61外螺纹、62第二轴承挡边、7扇形槽。In the figure: 1 shell, 11 first bearing rib, 12 internal thread, 2 rotating nut, 21 annular protrusion, 3 linear guide rod, 4 first bearing, 5 second bearing, 6 end cover, 61 external thread, 62 second bearing ribs, 7 fan-shaped grooves.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
参照图1-6，一种同轴线的直线运动和旋转运动转换器，包括壳体1、旋转螺母2、直线导杆3、第一轴承4、第二轴承5和端盖6，其中，所述壳体1设置为空心筒状结构，其一端开孔并设置有第一轴承挡边11，另一端敞口并设置有内螺纹12。Referring to Figures 1-6, a coaxial linear motion and rotary motion converter includes a housing 1, a rotating nut 2, a linear guide rod 3, a first bearing 4, a second bearing 5 and an end cover 6, wherein, The housing 1 is configured as a hollow cylindrical structure, one end of which is open and provided with a first bearing rib 11 , and the other end is open and provided with an internal thread 12 .
所述旋转螺母2设置在壳体1内且其一端伸出壳体1，伸出的旋转螺纹2连接旋转运动端，所述旋转螺母2外周设置有一环形凸起21，所述第一轴承4和第二轴承5套设在旋转螺母2上且分别位于环形凸起21的两侧，所述第一轴承4和第二轴承5均设置为角接触球轴承，所述旋转螺母2通过两个轴承固定在壳体1内，限制旋转螺母2直线移动。The rotating nut 2 is arranged in the housing 1 and one end thereof protrudes from the housing 1, and the protruding rotating thread 2 is connected to the rotating end, the outer periphery of the rotating nut 2 is provided with an annular protrusion 21, and the first bearing 4 and the second bearing 5 are sleeved on the rotating nut 2 and are respectively located on both sides of the annular protrusion 21, the first bearing 4 and the second bearing 5 are both set as angular contact ball bearings, and the rotating nut 2 passes through two The bearing is fixed in the housing 1 and limits the linear movement of the rotating nut 2 .
所述端盖6设置在壳体1的敞口端，所述端盖1外周设置有与内螺纹12配合的外螺纹61，所述端盖6内侧端设置有第二轴承挡边62，所述端盖6的外侧端设置有多个扇形槽7，便于人工旋紧。The end cover 6 is arranged on the open end of the housing 1, and the outer circumference of the end cover 1 is provided with an external thread 61 matching with the internal thread 12, and the inner end of the end cover 6 is provided with a second bearing rib 62, so that The outer end of the end cap 6 is provided with a plurality of fan-shaped grooves 7, which is convenient for manual tightening.
所述直线导杆3一端与直线运动端连接，另一端设置有螺纹，所述直线导杆3通过螺纹与旋转螺母2连接，所述旋转螺母2的螺纹设置为大螺距螺纹，其螺纹升角大于摩擦角，所述直线导杆3上的螺纹也设置为大螺距螺纹，其螺纹升角大于摩擦角。One end of the linear guide rod 3 is connected to the linear movement end, and the other end is provided with a screw thread, and the linear guide rod 3 is connected with the rotating nut 2 through the thread, and the screw thread of the rotating nut 2 is set as a large-pitch thread, and its thread lead angle Greater than the friction angle, the thread on the linear guide rod 3 is also set as a large pitch thread, and its thread lead angle is greater than the friction angle.
本发明工作时，首先将转换器固定，保证在运行过程中直线导杆3往复直线运动产生的轴向力不使之移动，直线导杆3与直线运动端相连，旋转螺母2与旋转运动端相连。When the present invention works, the converter is first fixed to ensure that the axial force generated by the reciprocating linear motion of the linear guide rod 3 during operation does not make it move. connected.
当直线运动转换成旋转运动时，直线运动端带动直线导杆3向前运动，直线导杆3与旋转螺母2通过螺纹副接触配合，螺纹副设置成螺纹升角大于摩擦角，不能自锁，螺纹副把轴向力转换成绕轴心旋转的径向力，驱动旋转螺母2做旋转运动，进而带动旋转运动端做旋转运动，轴向力通过轴承传递给壳体1，被转换器固定座产生的反力抵消，此时，直线运动被转换成同轴线的旋转运动。当直线运动端向后运动时，转换器将直线运动转换为反方向旋转运动。这样，往复直线运动就被转换成同轴线的往复旋转运动。When the linear motion is converted into rotary motion, the linear motion end drives the linear guide rod 3 to move forward, and the linear guide rod 3 and the rotating nut 2 contact and cooperate through the thread pair. The thread pair converts the axial force into a radial force that rotates around the axis, drives the rotating nut 2 to rotate, and then drives the rotating end to rotate. The axial force is transmitted to the housing 1 through the bearing and is fixed by the converter. The resulting reaction forces cancel out, at which point the linear motion is converted into a rotational motion of the coaxial line. When the linear motion end moves backwards, the converter converts the linear motion into the opposite direction of rotary motion. In this way, the reciprocating linear motion is converted into the reciprocating rotary motion of the coaxial line.
当旋转运动转换成直线运动，旋转运动端带动旋转螺母2做旋转运动，螺纹副把旋转螺母2的转矩转换成轴向推力传递给直线导杆3，驱动直线导杆3做直线运动，进而带动直线运动端做直线运动，螺纹副产生的轴向反力通过轴承传递给壳体1，被转换器固定座产生的反力抵消，此时旋转运动被转换成同轴线的直线运动。旋转运动端反向旋转时，转换器将旋转运动转换为反方向直线运动。这样，往复旋转运动就被转换成同轴线的往复直线运动。When the rotary motion is converted into linear motion, the rotary motion end drives the rotary nut 2 to perform rotary motion, and the thread pair converts the torque of the rotary nut 2 into axial thrust and transmits it to the linear guide rod 3, driving the linear guide rod 3 to perform linear motion, and then The linear motion end is driven to perform linear motion, and the axial reaction force generated by the thread pair is transmitted to the housing 1 through the bearing, and is offset by the reaction force generated by the converter fixed seat. At this time, the rotational motion is converted into a coaxial linear motion. When the rotary motion end rotates in the opposite direction, the converter converts the rotary motion into linear motion in the opposite direction. In this way, the reciprocating rotary motion is converted into the reciprocating linear motion of the coaxial line.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810652150.9A CN108708951A (en) | 2018-06-22 | 2018-06-22 | A kind of linear motion and rotating motion transformer of coaxial line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810652150.9A CN108708951A (en) | 2018-06-22 | 2018-06-22 | A kind of linear motion and rotating motion transformer of coaxial line |
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| CN108708951A true CN108708951A (en) | 2018-10-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034252A (en) * | 2021-12-15 | 2022-02-11 | 烟台清科嘉机器人联合研究院有限公司 | Screw displacement detection device, parallel mechanism |
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| US6253632B1 (en) * | 1997-04-30 | 2001-07-03 | Vladisklav Poulek | Motion transforming apparatus |
| CN103437989A (en) * | 2013-06-18 | 2013-12-11 | 中国海洋石油总公司 | High-pressure fluid mixing pump control system and fluid pumping control method |
| CN104061299A (en) * | 2014-06-25 | 2014-09-24 | 西安交通大学 | Mechanism capable of realizing mutual conversion between push force and pull force of force amplifying |
| US20140373651A1 (en) * | 2013-06-20 | 2014-12-25 | Zedi Canada Inc. | Angular Motion Control System and Method |
| CN204572989U (en) * | 2015-04-20 | 2015-08-19 | 洪劲松 | A kind of ball leading screw driving device |
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2018
- 2018-06-22 CN CN201810652150.9A patent/CN108708951A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6253632B1 (en) * | 1997-04-30 | 2001-07-03 | Vladisklav Poulek | Motion transforming apparatus |
| CN103437989A (en) * | 2013-06-18 | 2013-12-11 | 中国海洋石油总公司 | High-pressure fluid mixing pump control system and fluid pumping control method |
| US20140373651A1 (en) * | 2013-06-20 | 2014-12-25 | Zedi Canada Inc. | Angular Motion Control System and Method |
| CN104061299A (en) * | 2014-06-25 | 2014-09-24 | 西安交通大学 | Mechanism capable of realizing mutual conversion between push force and pull force of force amplifying |
| CN204572989U (en) * | 2015-04-20 | 2015-08-19 | 洪劲松 | A kind of ball leading screw driving device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114034252A (en) * | 2021-12-15 | 2022-02-11 | 烟台清科嘉机器人联合研究院有限公司 | Screw displacement detection device, parallel mechanism |
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