CN109473083A - A kind of string micro-adjusting mechanism of planet-gear transmission - Google Patents

A kind of string micro-adjusting mechanism of planet-gear transmission Download PDF

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Publication number
CN109473083A
CN109473083A CN201811427701.8A CN201811427701A CN109473083A CN 109473083 A CN109473083 A CN 109473083A CN 201811427701 A CN201811427701 A CN 201811427701A CN 109473083 A CN109473083 A CN 109473083A
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CN
China
Prior art keywords
shaft
string
planet
pin
gear
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Granted
Application number
CN201811427701.8A
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Chinese (zh)
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CN109473083B (en
Inventor
张明柱
王界中
许家俊
柴蓉
李光耀
黄思源
王歩祯
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Henan University of Science and Technology
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Henan University of Science and Technology
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Priority to CN201811427701.8A priority Critical patent/CN109473083B/en
Publication of CN109473083A publication Critical patent/CN109473083A/en
Application granted granted Critical
Publication of CN109473083B publication Critical patent/CN109473083B/en
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Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10DSTRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D3/00Details of, or accessories for, stringed musical instruments, e.g. slide-bars
    • G10D3/14Tuning devices, e.g. pegs, pins, friction discs or worm gears
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H1/00Toothed gearings for conveying rotary motion
    • F16H1/28Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • F16H57/023Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H1/00Toothed gearings for conveying rotary motion
    • F16H1/28Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/325Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising a carrier with pins guiding at least one orbital gear with circular holes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H1/00Toothed gearings for conveying rotary motion
    • F16H1/28Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/327Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear

Abstract

The present invention relates to stringed musical instrument tuning device, the string micro-adjusting mechanism of specifically a kind of planet-gear transmission.Including abutment sleeve axis, the spool shaft being rotatably arranged in abutment sleeve axis, the positioning core axle being rotatably arranged in spool shaft and adjustment device;Adjusting device includes the annular groove being fixed on abutment sleeve axis and the knob for being rotatably arranged on annular groove outer rim, one end of spool shaft is located in annular groove and is coaxially fixed with pin disk, biasing transmission shaft is eccentrically provided in knob, it rotates coaxially on biasing transmission shaft equipped with planetary gear, planetary gear is connected by meshing transmission with the ring gear being located on annular groove inner edge, multiple pin holes are also provided on planetary gear, the pin shaft with the cooperation of pin hole inscribe is correspondingly provided on pin disk, and the diameter of axle of pin shaft is less than the aperture of pin hole so that planetary gear can drive pin disk to rotate.The present invention can be realized the fine tuning of string elasticity, and noise is small when tuning a stringed instrument, and be influenced by temperature, humidity small.

Description

A kind of string micro-adjusting mechanism of planet-gear transmission
Technical field
The present invention relates to stringed musical instrument tuning device, the string of specifically a kind of planet-gear transmission is finely tuned Mechanism.
Background technique
The stringed musical instruments such as violin, violoncello are required before use by tuning a stringed instrument, optimal to guarantee to have when playing Tone color is tuned a stringed instrument particularly important for violin.
The stringed musical instruments such as violin, violoncello are also craftworks while as instrumental music, the requirement to shape, size The design difficulty of height, mechanism of tuning a stringed instrument automatically is big.
Through hole usually is opened up at scroll head position at present, solid wooden stick of tuning a stringed instrument is inserted into two holes, string is consolidated Determine and be coiled in tune a stringed instrument on stick, stick of tuning a stringed instrument is rotated by tuning a stringed instrument the knob on stick and tuned a stringed instrument, tuned up.Make in this way not String can be finely adjusted, so that low precision of tuning a stringed instrument, inconvenient, easily qin itself be caused to wear when tuning up every time.By temperature, Humidity etc. is affected, and when use can generate biggish noise, and the precision and quality tuned a stringed instrument will receive influence, make for a long time With ineffective.
Summary of the invention
The present invention is intended to provide a kind of string micro-adjusting mechanism of planet-gear transmission, can be realized string elasticity Fine tuning, noise is small when tuning a stringed instrument, and is influenced by temperature, humidity small.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows: a kind of planet-gear transmission String micro-adjusting mechanism, including abutment sleeve axis, rotate coaxially the spool shaft being arranged in abutment sleeve axis, rotate coaxially setting exist Positioning core axle in spool shaft and the adjustment device that string fine tuning is realized for driving spool shaft to rotate, abutment sleeve axis and Two opposite perforation that positioning core axle was respectively used to and was provided with scroll head position are fixed, and the part of spool shaft is by abutment sleeve axis Middle stretching is for string coiling;Adjustment device includes the annular groove being coaxially fixed on abutment sleeve axis and rotates coaxially setting In the knob of annular groove outer rim, spool shaft is located in annular groove far from its one end for coiling string part and coaxially fixation is set Have pin disk, be eccentrically provided with biasing transmission shaft in knob, bias and rotated coaxially on transmission shaft equipped with planetary gear, planetary gear with Ring gear on annular groove inner edge is connected by meshing transmission, and multiple pin holes are also provided on planetary gear, on pin disk It is correspondingly provided with the pin shaft with the cooperation of pin hole inscribe, and the diameter of axle of pin shaft is less than the aperture of pin hole so that planetary gear can drive pin Disk rotation.
Preferably, spool shaft is provided with the step for radial positioning far from its one end for coiling string part, in pin disk Center offer the mounting hole being coupled with step.
Preferably, positioning core axle is distributed in annular groove far from its one end for being coupled part with scroll head and cooperates peace Equipped with check ring, check ring is used for the axially position of abutment sleeve axis, spool shaft and positioning core axle.
Preferably, spool shaft and positioning core axle are multi-diameter shaft, and spool shaft includes that clearance fit is mounted on abutment sleeve axis In reduced diameter section reel inner shaft and for string coiling enlarged diameter section reel outer shaft, positioning core axle include clearance fit peace The locating core inner shaft of reduced diameter section in spool shaft and locating core outer shaft for being fixedly connected with scroll head position.
Preferably, the outer diameter of abutment sleeve axis, reel outer shaft and locating core outer shaft is identical.
Preferably, the string hole for fixing string is equipped on the axial plane of reel outer shaft.
Preferably, the axis hole for installing biasing transmission shaft is offered on knob, biasing transmission shaft is multi-diameter shaft, small straight Diameter section part passes through tight fit and is mounted in axis hole, and remainder is coupled with planetary gear centre bore, and the shaft shoulder is for real Existing planetary gear axially position effect.
Preferably, the convex edge being rotatably assorted with the outer rim of annular groove is equipped in the inner edge of knob;It is sliding in convex edge and annular The jelly for increasing damping ratio is respectively provided at the cooperation of slot and at the cooperation of planetary gear and ring gear.
Preferably, planetary gear is roller gear.
Preferably, it is respectively provided between increase and qin body and rubs on the axial plane of abutment sleeve axis and locating core outer shaft The convex stripe of power.
Beneficial effect
String micro-adjusting mechanism of the invention specifically uses planet-gear transmission, and planetary gear is that eccentric wheel can be with internal tooth Circle engages, and locating core outer shaft and abutment sleeve axis are separately fixed at two opposite perforation being opened on scroll head in the course of work In, so that locating core outer shaft and abutment sleeve shaft position are fixed.Turning knob, planetary gear are engaging simultaneously phase with ring gear When to rotation, the pin hole on planetary gear drives the pin shaft and reel inner shaft rotation tangent with it, and generates the rotation with knob Angle is compared and its small corner, carries out elastic fine tuning to the string being fixed on reel outer shaft to realize.
The present invention is simple using planet-gear transmission positioning, has the characteristics that vibration is small, noise is low, can increase The accuracy tuned a stringed instrument, it is most important for work of tuning a stringed instrument.Planet-gear transmission mode of the invention simultaneously can be reduced The complexity of entire micro-adjusting mechanism, reduces cost, greatly reduces occupied space, and it is narrow to can be very good adaptation working space The characteristics of, and the weight of entire micro-adjusting mechanism is reduced, guarantee that mechanism is simple and compact.
Detailed description of the invention
Fig. 1 is configuration schematic diagram of the invention;
Fig. 2 is the schematic diagram of the section structure of the invention;
Fig. 3 is the schematic perspective view of the annular groove part in the present invention;
Fig. 4 is the schematic perspective view of the knob portion in the present invention;
Fig. 5 is the structural schematic diagram that the pin shaft on pin hole and fluted disc on planetary gear is coupled;
Marked in the figure: 1, knob, 101, convex edge, 102, axis hole, 2, biasing transmission shaft, 3, planetary gear, 301, pin hole, 4, spring Retaining ring, 5, pin disk, 501, pin shaft, 6, abutment sleeve axis, 601, annular groove, 602, ring gear, 7, spool shaft, 701, in reel Axis, 702, reel outer shaft, 8, positioning core axle, 801, locating core inner shaft, 802, locating core outer shaft.
Specific embodiment
As shown in Figures 1 and 2, the string micro-adjusting mechanism that a kind of small teeth number difference planet gear 3 of the invention is driven, including positioning Quill 6 rotates coaxially the spool shaft 7 being arranged in abutment sleeve axis 6, rotates coaxially the locating core being arranged in spool shaft 7 Axis 8 and adjustment device.The rotation of adjustment device can drive spool shaft 7 and its small corner to be rotated, to realize Elastic fine tuning is carried out to the string being fixed on reel outer shaft 702.
Spool shaft 7 and positioning core axle 8 are multi-diameter shaft.Spool shaft 7 includes the reduced diameter section and enlarged diameter section being coaxially distributed, Reduced diameter section forms reel inner shaft 701 and clearance fit is mounted in abutment sleeve axis 6, the reel outer shaft that enlarged diameter section is formed 702 are distributed in 6 outside of abutment sleeve axis and coil fixation for string, and the string fixed for string is offered on reel outer shaft 702 Hole.Positioning core axle 8 equally includes the reduced diameter section and enlarged diameter section being coaxially distributed, the locating core inner shaft 801 that reduced diameter section is formed Clearance fit is mounted in spool shaft 7, and the locating core outer shaft 802 that enlarged diameter section is formed with scroll head position for being fixedly connected.It is fixed The outer diameter of position quill 6, reel outer shaft 702 and locating core outer shaft 802 is identical.In the application, entirety of the invention can be worn It is fixed in two opposite perforation that scroll head position opens up, the outer rim of abutment sleeve axis 6 and one of perforation tight fit are solid Fixed, the outer rim of locating core outer shaft 802 is tightly fixed with another perforation, so that reel outer shaft 702 is located between two perforation Position fixed with string, and spool shaft 7 can then pass through reel relative to 8 flexible rotating of abutment sleeve axis 6 and positioning core axle The rotation of axis 7 is to adjust the tensioning degree of string.In order to guarantee the present invention stability fixed with qin body, in abutment sleeve axis 6 The convex stripe of frictional force between the perforation being respectively provided on the axial plane of locating core outer shaft 802 in increase and qin body.
Adjustment device includes coaxially being fixed on the annular groove 601 of 6 upper end of abutment sleeve axis and rotating coaxially to be arranged in ring The knob 1 of 601 outer rim of shape sliding slot.The convex edge 101 being rotatably assorted with the outer rim of annular groove 601 is equipped in the inner edge of knob 1, and The jelly for increasing damping ratio is equipped at the cooperation of convex edge 101 and annular groove 601.Annular groove 601 and knob 1 divide Not not as shown in Figures 3 and 4.The upper end of reel inner shaft 701 is located in annular groove 601 and is coaxially fixed with pin disk 5, rotational pin Disk 5 can drive spool shaft 7 to rotate according to same speed.Axis hole 102, tight fit in axis hole 102 are eccentrically provided in knob 1 The biasing transmission shaft 2 of ladder shaft-like is installed.The reduced diameter section part of biasing transmission shaft 2 is mounted on axis hole 102 by tight fit In, the centre bore of remainder and the planetary gear 3 of Cylinder Gear colyliform is coupled, the shaft shoulder for realizing planetary gear 3 axis To positioning action, planetary gear 3 is connected by meshing transmission with the ring gear 602 being arranged on 601 inner edge of annular groove, and in planet The jelly for increasing damping ratio is again provided at the cooperation of gear 3 and ring gear 602.As shown in figure 5, in planetary gear 3 On be also provided with multiple pin holes 301, the pin shaft 501 with the cooperation of pin hole 301 inscribe, and pin shaft 501 are correspondingly provided on pin disk 5 The diameter of axle is less than the aperture of pin hole 301 so that planetary gear 3 can drive pin disk 5 to rotate.Turning knob 1 passes through biasing transmission shaft 2 To drive 7 axis of winding reel axis revolution while engaging rotation with ring gear 602 of planetary gear 3, the drive of pin hole 301 and its phase Rotational speed of the pin shaft 501 cut with biggish reduction ratio with respect to knob 1, then the rotation of band movable reel outer shaft 702 is tuned a stringed instrument.
The number of teeth of planetary gear 3 is set as Z2, the number of teeth of ring gear 602 is Z1, it is however noted that Z2With Z1It Between, it cannot numerically differ too big, to avoid there is the phenomenon that planetary gear 3 cannot be engaged with ring gear 602.
Assuming that the corner of knob 1 is denoted as, the corner of planetary gear 3 (equal with 5 revolving speed of pin disk) is denoted as.Knob 1 with Corner (i.e. the corner of the spool shaft 7) relationship for selling disk 5 is as follows:
In the present embodiment, takeIt brings into known to above formula:.It is enclosed in this way in the rotation of knob 17, Reel outer shaft 702 can rotate 1 circle, thus illustrate, the present invention is capable of providing sufficiently large reduction ratio, and then can accurately tune a stringed instrument Meet actual need of work.
In the present embodiment, the upper end of 7 inner shaft of spool shaft is provided with the step for radial positioning, in the centre bit of pin disk 5 Set the mounting hole for offering and being coupled with step.The step-like setting of positioning core axle 8 can also be to abutment sleeve axis 6, spool shaft 7 Play the role of axially position, the upper end of locating core inner shaft 801 is distributed in annular groove 601 and is fitted with check ring 4, Check ring 4 is used for the axially position of abutment sleeve axis 6, spool shaft 7 and positioning core axle 8.

Claims (10)

1. a kind of string micro-adjusting mechanism of planet-gear transmission, it is characterised in that: including abutment sleeve axis (6), coaxially The spool shaft (7) that is rotatably arranged in abutment sleeve axis (6), rotate coaxially the positioning core axle (8) that is arranged in spool shaft (7) with And for driving spool shaft (7) rotation to realize the adjustment device of string fine tuning, abutment sleeve axis (6) and positioning core axle (8) point It Yong Yu not be fixed with two opposite perforation for being provided with scroll head position, the part of spool shaft (7) in abutment sleeve axis (6) by stretching Out for string coiling;Adjustment device includes the annular groove (601) being coaxially fixed on abutment sleeve axis (6) and rotates coaxially Knob (1) in annular groove (601) outer rim is set, and spool shaft (7) is located at annular far from its one end for coiling string part and slides Pin disk (5) are fixed in slot (601) and coaxially, biasing transmission shaft (2) is eccentrically provided in knob (1), are biased transmission shaft (2) On rotate coaxially equipped with planetary gear (3), planetary gear (3) is nibbled with the ring gear (602) being located on annular groove (601) inner edge Transmission connection is closed, multiple pin holes (301) are also provided on planetary gear (3), is correspondingly provided on pin disk (5) and pin hole (301) pin shaft (501) of inscribe cooperation, and the diameter of axle of pin shaft (501) is less than the aperture of pin hole (301) so that planetary gear (3) pin disk (5) can be driven to rotate.
2. a kind of string micro-adjusting mechanism of planet-gear transmission according to claim 1, it is characterised in that: reel Axis (7) is provided with the step for radial positioning far from its one end for coiling string part, opens up in the center of pin disk (5) There is the mounting hole being coupled with step.
3. a kind of string micro-adjusting mechanism of planet-gear transmission according to claim 1, it is characterised in that: positioning Mandrel (8) is distributed in annular groove (601) far from its one end for being coupled part with scroll head and is fitted with spring catch It encloses (4), check ring (4) is used for the axially position of abutment sleeve axis (6), spool shaft (7) and positioning core axle (8).
4. a kind of string micro-adjusting mechanism of planet-gear transmission according to claim 1, it is characterised in that: reel Axis (7) and positioning core axle (8) are multi-diameter shaft, spool shaft (7) include clearance fit be mounted on it is small straight in abutment sleeve axis (6) The reel outer shaft (702) of the reel inner shaft (701) of diameter section and the enlarged diameter section for string coiling, positioning core axle (8) includes gap The locating core inner shaft (801) for the reduced diameter section being fitted in spool shaft (7) and for determining with what scroll head position was fixedly connected Position core outer shaft (802).
5. a kind of string micro-adjusting mechanism of planet-gear transmission according to claim 4, it is characterised in that: positioning The outer diameter of quill (6), reel outer shaft (702) and locating core outer shaft (802) is identical.
6. a kind of string micro-adjusting mechanism of planet-gear transmission according to claim 4, it is characterised in that: rolling up The axial plane of cylinder outer shaft (702) is equipped with the string hole for fixing string.
7. a kind of string micro-adjusting mechanism of planet-gear transmission according to claim 1, it is characterised in that: revolving The axis hole (102) for installing biasing transmission shaft (2) is offered on button (1), biasing transmission shaft (2) is multi-diameter shaft, reduced diameter section Part is mounted in axis hole (102) by tight fit, and remainder and the centre bore of planetary gear (3) are coupled, and the shaft shoulder is used In the axially position effect for realizing planetary gear (3).
8. a kind of string micro-adjusting mechanism of planet-gear transmission according to claim 1, it is characterised in that: revolving The inner edge of button (1) is equipped with the convex edge (101) being rotatably assorted with the outer rim of annular groove (601);In convex edge (101) and annular groove (601) it is respectively provided at cooperation and at the cooperation of planetary gear (3) and ring gear (602) glue for increasing damping ratio Object.
9. a kind of string micro-adjusting mechanism of planet-gear transmission according to claim 1, it is characterised in that: planet Gear (3) is roller gear.
10. a kind of string micro-adjusting mechanism of planet-gear transmission according to claim 1, it is characterised in that: The protrusion of frictional force between increase and qin body is respectively provided on the axial plane of abutment sleeve axis (6) and locating core outer shaft (802) Striped.
CN201811427701.8A 2018-11-27 2018-11-27 String fine-tuning mechanism driven by planetary gear with small tooth difference Active CN109473083B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811427701.8A CN109473083B (en) 2018-11-27 2018-11-27 String fine-tuning mechanism driven by planetary gear with small tooth difference

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811427701.8A CN109473083B (en) 2018-11-27 2018-11-27 String fine-tuning mechanism driven by planetary gear with small tooth difference

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CN109473083A true CN109473083A (en) 2019-03-15
CN109473083B CN109473083B (en) 2023-12-19

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004301685A (en) * 2003-03-31 2004-10-28 Denso Corp Rotational angle detection device
CN204440885U (en) * 2015-02-06 2015-07-01 张亚军 A kind of string fine tuning structure
DE102015004405A1 (en) * 2015-04-11 2016-10-13 Jan Klindworth variator
CN107202152A (en) * 2017-06-01 2017-09-26 南京理工大学 A kind of pair of gearratio few teeth difference harmonic gear reducer
CN108510967A (en) * 2018-06-11 2018-09-07 洛阳金衢工贸有限公司 A kind of string micro-adjusting mechanism by face gear planet
CN209312424U (en) * 2018-11-27 2019-08-27 河南科技大学 A kind of string micro-adjusting mechanism of planet-gear transmission

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004301685A (en) * 2003-03-31 2004-10-28 Denso Corp Rotational angle detection device
CN204440885U (en) * 2015-02-06 2015-07-01 张亚军 A kind of string fine tuning structure
DE102015004405A1 (en) * 2015-04-11 2016-10-13 Jan Klindworth variator
CN107202152A (en) * 2017-06-01 2017-09-26 南京理工大学 A kind of pair of gearratio few teeth difference harmonic gear reducer
CN108510967A (en) * 2018-06-11 2018-09-07 洛阳金衢工贸有限公司 A kind of string micro-adjusting mechanism by face gear planet
CN209312424U (en) * 2018-11-27 2019-08-27 河南科技大学 A kind of string micro-adjusting mechanism of planet-gear transmission

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