CN111981099A - Rotary fixed angle positioning device - Google Patents

Rotary fixed angle positioning device Download PDF

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Publication number
CN111981099A
CN111981099A CN201910426270.1A CN201910426270A CN111981099A CN 111981099 A CN111981099 A CN 111981099A CN 201910426270 A CN201910426270 A CN 201910426270A CN 111981099 A CN111981099 A CN 111981099A
Authority
CN
China
Prior art keywords
fixed angle
angle positioning
linear displacement
ratchet wheel
power wheel
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.)
Pending
Application number
CN201910426270.1A
Other languages
Chinese (zh)
Inventor
许振昆
吴纪营
张兴明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Zhongchuang Hanwei Technology Co ltd
Original Assignee
Ningbo Zhongchuang Hanwei Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningbo Zhongchuang Hanwei Technology Co ltd filed Critical Ningbo Zhongchuang Hanwei Technology Co ltd
Priority to CN201910426270.1A priority Critical patent/CN111981099A/en
Priority to PCT/CN2019/117365 priority patent/WO2020233004A1/en
Publication of CN111981099A publication Critical patent/CN111981099A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16H27/00—Step-by-step mechanisms without freewheel members, e.g. Geneva drives
    • F16H27/02—Step-by-step mechanisms without freewheel members, e.g. Geneva drives with at least one reciprocating or oscillating transmission member
    • 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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • 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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H35/008—Gearings or mechanisms with other special functional features for variation of rotational phase relationship, e.g. angular relationship between input and output shaft
    • 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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H2035/005—Gearings or mechanisms preventing back-driving
    • 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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H2035/006—Gearings or mechanisms for stopping or limiting movement, e.g. stopping a movement after few turns

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The invention discloses a rotary fixed-angle positioning device, which is a power wheel connected with a motor, and comprises a notch clamping groove arranged on the power wheel, a linear displacement slide block arranged along the outer edge of the power wheel, a springable pawl and a positioning end face fixed on the linear displacement slide block, and a ratchet wheel matched with the springable pawl, wherein a fixed-angle positioning block matched with the positioning end face is arranged on one side of the ratchet wheel. The rotary fixed angle positioning device disclosed by the invention can achieve the accurate rotary action effect of the servo motor by using a simple mechanical structure and a common motor, and also has the functions of unidirectional fixed angle rotation and positioning, low cost and rich functions.

Description

Rotary fixed angle positioning device
Technical Field
The invention relates to the field of mechanical transmission and automation, in particular to a rotary fixed-angle positioning device in the field.
Background
The shaft mechanism in the production process of the automatic equipment often needs to rotate one or more specific angles according to the design standard, the precise rotation motion needs to be driven by a servo motor, the cost is high, and if the precision of the servo motor is not high or the rotation angle is in a problem, the driven part can cause a series of subsequent problems due to the lack of a limiting device.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device which achieves the function of accurately positioning an angle through simple mechanical transmission and structure.
In order to solve the technical problems, the invention adopts the following technical scheme:
the improvement of a rotary fixed angle positioning device is that: the power wheel connected with the motor comprises a notch clamping groove arranged on the power wheel, a linear displacement slide block arranged along the outer edge of the power wheel and a ratchet wheel matched with the elastic pawl, wherein the linear displacement slide block is fixedly provided with the elastic pawl and a positioning end face, and one side of the ratchet wheel is provided with a fixed angle positioning block matched with the positioning end face.
Furthermore, a spring reset sheet is arranged on the linear displacement slide block.
Furthermore, the number of teeth of the ratchet wheel is more than 2.
Furthermore, the ratchet wheel and the fixed angle positioning block are fixedly connected with a shaft mechanism needing to rotate.
The invention has the beneficial effects that:
the rotary fixed angle positioning device disclosed by the invention can convert the reciprocating linear motion of the linear displacement slide block into the rotary motion of the ratchet wheel, can control the rotating angle of the ratchet wheel each time and perform positioning through the fixed angle positioning block, particularly, the rotating angle of the ratchet wheel each time is determined according to the number of teeth on the ratchet wheel, and positioning is realized by the superposition of the positioning end surface on the linear displacement slide block and the end surface of the fixed angle positioning block at one side of the ratchet wheel, so that the rotation of the ratchet wheel is avoided.
The rotary fixed angle positioning device disclosed by the invention can achieve the accurate rotary action effect of the servo motor by using a simple mechanical structure and a common motor, and also has the functions of unidirectional fixed angle rotation and positioning, low cost and rich functions.
Drawings
Fig. 1 is a schematic structural diagram I of a rotational fixed-angle positioning device disclosed in embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of a pawl toggle ratchet of the rotary fixed angle positioning device disclosed in embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram II of the rotational fixed-angle positioning apparatus disclosed in embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Embodiment 1, as shown in fig. 1 to 3, this embodiment discloses a rotary fixed angle positioning device, which includes a power wheel 1 connected to a motor, a notch slot 2 is disposed on the power wheel 1, a linear displacement slider 3 is disposed along an outer edge of the power wheel 1, an elastic pawl 4 and a positioning end face 5 are fixed on the linear displacement slider 3, a ratchet 6 engaged with the elastic pawl 4 is further included, a fixed angle positioning block 7 engaged with the positioning end face 5 is disposed on one side of the ratchet 6, the ratchet 6 and the fixed angle positioning block 7 are fixedly connected to a shaft mechanism to be rotated, the number of teeth of the ratchet can be determined according to the rotation angle requirement, the shape of the fixed angle positioning block 7 and the position of the positioning end face 5 are changed accordingly, in this embodiment, the ratchet 6 has four 8, the fixed angle positioning block 7 is a square tooth block with four rounded corners, the number of the positioning end faces on the linear displacement slider is 2, when the power wheel 1 rotates anticlockwise, when the edge of the linear displacement sliding block 3 falls into a notch clamping groove of the power wheel, the linear displacement sliding block 3 is pushed out, the elastic pawl 4 can poke teeth on the ratchet wheel, the ratchet wheel 6 and the fixed angle positioning block 7 rotate for 90 degrees, and one end face of the fixed angle positioning block 7 is positioned in a superposition way with one positioning end face 5 on the linear displacement sliding block after the ratchet wheel and the fixed angle positioning block rotate in place; when the power wheel 1 rotates clockwise, the edge of the linear displacement sliding block 3 falls into the notch clamping groove of the power wheel under the action of the spring resetting piece 9, the power wheel pulls back the linear displacement sliding block 3, the elastic pawl 4 cannot stir teeth on the ratchet wheel 6, and the ratchet wheel 6 and the fixed angle positioning block 7 are not moved in situ.
According to the rotary fixed angle positioning device disclosed by the embodiment, the power wheel rotates anticlockwise to drive the linear displacement slide block to be pushed out, and after the ratchet wheel is pulled by the elastic pawl to rotate for 90-degree positioning once, no matter how many circles the power wheel continues to rotate anticlockwise, the ratchet wheel and the rotary fixed angle positioning block can still be positioned by being clamped and cannot move any more; only when the power wheel rotates clockwise to pull the linear displacement slider back to the original position and the power wheel rotates anticlockwise again to push the linear displacement slider, the elastic pawl can poke the ratchet wheel to rotate for the second 90 degrees, and the like, so that the function of unidirectional fixed-angle positioning is realized.

Claims (4)

1. A rotary fixed angle positioning device is characterized in that: the power wheel connected with the motor comprises a notch clamping groove arranged on the power wheel, a linear displacement slide block arranged along the outer edge of the power wheel and a ratchet wheel matched with the elastic pawl, wherein the linear displacement slide block is fixedly provided with the elastic pawl and a positioning end face, and one side of the ratchet wheel is provided with a fixed angle positioning block matched with the positioning end face.
2. The rotary fixed angle positioning apparatus according to claim 1, wherein: and a spring reset sheet is arranged on the linear displacement slide block.
3. The rotary fixed angle positioning apparatus according to claim 1, wherein: the number of teeth of the ratchet wheel is more than 2.
4. The rotary fixed angle positioning apparatus according to claim 1, wherein: the ratchet wheel and the fixed angle positioning block are fixedly connected with a shaft mechanism needing to rotate.
CN201910426270.1A 2019-05-21 2019-05-21 Rotary fixed angle positioning device Pending CN111981099A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201910426270.1A CN111981099A (en) 2019-05-21 2019-05-21 Rotary fixed angle positioning device
PCT/CN2019/117365 WO2020233004A1 (en) 2019-05-21 2019-11-12 Rotation fixed-angle positioning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910426270.1A CN111981099A (en) 2019-05-21 2019-05-21 Rotary fixed angle positioning device

Publications (1)

Publication Number Publication Date
CN111981099A true CN111981099A (en) 2020-11-24

Family

ID=73437258

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910426270.1A Pending CN111981099A (en) 2019-05-21 2019-05-21 Rotary fixed angle positioning device

Country Status (2)

Country Link
CN (1) CN111981099A (en)
WO (1) WO2020233004A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR903991A (en) * 1943-05-05 1945-10-23 Ig Farbenindustrie Ag Maltese cross transmission
US3161070A (en) * 1964-01-28 1964-12-15 Venables Machine & Tool Co Indexing apparatus
US6789439B2 (en) * 2002-06-07 2004-09-14 Tien-Chen Tung Reciprocal force outputting mechanism
CN100567770C (en) * 2007-10-17 2009-12-09 山东泉林包装有限公司 A kind of conversion equipment of rectilinear movement to rotating motion
CN102661373B (en) * 2012-04-29 2014-09-17 伍尚强 Transmission device capable of converting straight line movement into rotating movement
CN103256363B (en) * 2013-05-30 2015-06-17 东北大学 Single-direction and single-step transmission mechanism
CN108662106A (en) * 2017-03-29 2018-10-16 上海齐耀动力技术有限公司 A kind of move along a straight line is converted to the device and ratchet mechanism of unidirectional rotary motion

Also Published As

Publication number Publication date
WO2020233004A1 (en) 2020-11-26

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