CN109473083B - String fine-tuning mechanism driven by planetary gear with small tooth difference - Google Patents
String fine-tuning mechanism driven by planetary gear with small tooth difference Download PDFInfo
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- CN109473083B CN109473083B CN201811427701.8A CN201811427701A CN109473083B CN 109473083 B CN109473083 B CN 109473083B CN 201811427701 A CN201811427701 A CN 201811427701A CN 109473083 B CN109473083 B CN 109473083B
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- shaft
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- positioning
- planetary gear
- pin
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- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 238000004804 winding Methods 0.000 claims abstract description 10
- 238000013016 damping Methods 0.000 claims description 4
- 235000015110 jellies Nutrition 0.000 claims description 4
- 239000008274 jelly Substances 0.000 claims description 4
- 208000023514 Barrett esophagus Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
- G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
- G10D3/14—Tuning devices, e.g. pegs, pins, friction discs or worm gears
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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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed 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
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed 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
- F16H2001/325—Toothed 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
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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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed 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
- F16H2001/327—Toothed 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Retarders (AREA)
Abstract
The invention relates to a tuning device of a string instrument, in particular to a string fine tuning mechanism driven by a small-tooth-difference planetary gear. Comprises a positioning sleeve shaft, a winding drum shaft rotatably arranged in the positioning sleeve shaft, a positioning mandrel rotatably arranged in the winding drum shaft and an adjusting device; the adjusting device comprises an annular chute fixed on the positioning sleeve shaft and a knob rotationally arranged at the outer edge of the annular chute, one end of the winding drum shaft is positioned in the annular chute and is coaxially and fixedly provided with a pin disc, an offset transmission shaft is eccentrically arranged in the knob, a planetary gear is coaxially rotationally arranged on the offset transmission shaft and is in meshed transmission connection with an inner gear ring positioned on the inner edge of the annular chute, a plurality of pin holes are further formed in the planetary gear, pin shafts which are internally tangent to the pin holes are correspondingly arranged on the pin disc, and the shaft diameter of the pin shafts is smaller than the aperture of the pin holes so that the planetary gear can drive the pin disc to rotate. The invention can realize the fine adjustment of the tightness of the strings, has low noise during string adjustment and is little influenced by temperature and humidity.
Description
Technical Field
The invention relates to a tuning device of a string instrument, in particular to a string fine tuning mechanism driven by a small-tooth-difference planetary gear.
Background
String instruments such as violins and cellos need to be subjected to string tuning before use, so that optimal tone color is guaranteed during playing, and particularly, string tuning is important for violins.
String instruments such as violins and cellos are artware while being used as instrumental instruments, and have high requirements on appearance and size, and the design difficulty of an automatic string adjusting mechanism is high.
At present, a through hole is usually formed in the head part of the piano, a solid wood tuning rod is inserted into the two holes, strings are fixed and coiled on the tuning rod, and the tuning rod is rotated to tune and fix the strings through a knob on the tuning rod. The string cannot be finely adjusted by using the method, so that the string adjusting precision is poor, the operation is inconvenient, and the string adjusting device is easy to wear each time when the strings are fixed. The effect of temperature, humidity etc. is great, can produce great noise when using, and the precision and the quality of string all can receive the influence, and long-term result of use is not good.
Disclosure of Invention
The invention aims to provide a string fine tuning mechanism with small tooth difference and planetary gear transmission, which can realize fine tuning of string tightness, has low noise during string tuning and is little influenced by temperature and humidity.
In order to solve the technical problems, the invention adopts the following technical scheme: a string fine-tuning mechanism driven by a planetary gear with less tooth difference comprises a positioning sleeve shaft, a spool shaft coaxially arranged in the positioning sleeve shaft in a rotating way, a positioning mandrel coaxially arranged in the spool shaft in a rotating way and an adjusting device for driving the spool shaft to rotate so as to realize string fine tuning, wherein the positioning sleeve shaft and the positioning mandrel are respectively used for being fixed with two opposite through holes arranged at the head part of a string, and part of the spool shaft extends out of the positioning sleeve shaft so as to coil the string; the adjusting device comprises an annular chute coaxially fixed on the positioning sleeve shaft and a knob coaxially rotated and arranged at the outer edge of the annular chute, one end of the drum shaft, which is far away from the part where the drum shaft winds around the string, is positioned in the annular chute and is coaxially and fixedly provided with a pin disc, an offset transmission shaft is eccentrically arranged in the knob, a planetary gear is coaxially rotated and arranged on the offset transmission shaft, the planetary gear is meshed and connected with an inner gear ring positioned on the inner edge of the annular chute, a plurality of pin holes are further formed on the planetary gear, pin shafts which are internally matched with the pin holes are correspondingly arranged on the pin disc, and the shaft diameter of the pin shafts is smaller than the aperture of the pin holes so that the planetary gear can drive the pin disc to rotate.
Preferably, the spool shaft is provided with a step for radial positioning at one end thereof remote from the coiled string portion, and a mounting hole fitted with the step is provided at the center position of the pin plate.
Preferably, one end of the positioning mandrel far away from the part matched with the head is distributed in the annular chute and is matched with a spring retainer ring, and the spring retainer ring is used for axially positioning the sleeve shaft, the spool shaft and the positioning mandrel.
Preferably, the spool shaft and the positioning mandrel are stepped shafts, the spool shaft comprises a spool inner shaft of a small-diameter section and a spool outer shaft of a large-diameter section, the spool inner shaft is arranged in the positioning sleeve shaft in a clearance fit mode, the spool outer shaft is used for winding strings, and the positioning mandrel comprises a positioning core inner shaft of the small-diameter section and a positioning core outer shaft, the positioning core inner shaft is arranged in the spool shaft in a clearance fit mode, and the positioning core outer shaft is fixedly connected with the head portion of the string.
Preferably, the outer diameters of the positioning sleeve shaft, the outer reel shaft and the outer positioning core shaft are the same.
Preferably, a string hole for fixing a string is provided on the axial face of the spool outer shaft.
Preferably, the knob is provided with a shaft hole for installing an offset transmission shaft, the offset transmission shaft is a stepped shaft, the small-diameter section part is installed in the shaft hole in a tight fit manner, the rest part is installed in a fit manner with the central hole of the planetary gear, and the shaft shoulder is used for achieving the axial positioning function of the planetary gear.
Preferably, the inner edge of the knob is provided with a convex edge which is in rotary fit with the outer edge of the annular chute; and jelly used for increasing the damping ratio is respectively arranged at the matching position of the convex edge and the annular chute and the matching position of the planetary gear and the annular gear.
Preferably, the planetary gear is a spur gear.
Preferably, raised stripes for increasing friction force with the body are respectively arranged on the shaft surfaces of the positioning sleeve shaft and the positioning core outer shaft.
Advantageous effects
The string fine tuning mechanism of the invention adopts a small tooth difference planetary gear transmission, the planetary gear is an eccentric wheel which can be meshed with an inner gear ring, and a positioning core outer shaft and a positioning sleeve shaft are respectively fixed in two opposite perforations arranged on a string head in the working process, so that the positions of the positioning core outer shaft and the positioning sleeve shaft are fixed. When the knob is rotated, the planetary gear is meshed with the annular gear and rotates relatively, the pin hole on the planetary gear drives the pin shaft tangent to the pin hole and the inner shaft of the drum to rotate, and a small rotating angle is generated compared with the rotating angle of the knob, so that the string fixed on the outer shaft of the drum is fine-tuned in tightness.
The invention adopts the planetary gear with small tooth difference to drive and position, has the characteristics of small vibration and low noise, can increase the accuracy of tuning the string, and is vital to the tuning work. Meanwhile, the planetary gear transmission mode with small tooth difference can reduce the complexity of the whole fine adjustment mechanism, reduce the cost, greatly reduce the occupied space, be well adapted to the characteristic of narrow working space, reduce the weight of the whole fine adjustment mechanism and ensure the simple and compact mechanism.
Drawings
FIG. 1 is a schematic diagram of an explosive structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic perspective view of an annular chute portion according to the present invention;
FIG. 4 is a schematic perspective view of a knob portion according to the present invention;
FIG. 5 is a schematic view of the structure of the pin holes on the planet gear and the pin shafts on the fluted disc mounted in a matched manner;
the marks in the figure: 1. knob, 101, flange, 102, shaft hole, 2, offset transmission shaft, 3, planetary gear, 301, pin hole, 4, spring retainer, 5, pin plate, 501, pin shaft, 6, positioning sleeve shaft, 601, annular chute, 602, inner gear ring, 7, spool shaft, 701, spool inner shaft, 702, spool outer shaft, 8, positioning mandrel, 801, positioning mandrel inner shaft, 802, positioning mandrel outer shaft.
Detailed Description
As shown in fig. 1 and 2, a string fine tuning mechanism driven by a small tooth difference planetary gear 3 of the present invention comprises a positioning sleeve shaft 6, a spool shaft 7 coaxially rotatably provided in the positioning sleeve shaft 6, a positioning mandrel 8 coaxially rotatably provided in the spool shaft 7, and an adjusting device. Rotation of the adjustment means will rotate the spool shaft 7 and its small rotational angle, thereby effecting fine-tuning of the tightness of strings fixed to the spool outer shaft 702.
The spool shaft 7 and the positioning mandrel 8 are both stepped shafts. The spool shaft 7 comprises a small diameter section and a large diameter section which are coaxially distributed, the small diameter section forms a spool inner shaft 701 and is installed in the positioning sleeve shaft 6 in a clearance fit manner, a spool outer shaft 702 formed by the large diameter section is distributed outside the positioning sleeve shaft 6 and is used for winding and fixing strings, and string holes for fixing strings are formed in the spool outer shaft 702. The positioning mandrel 8 also comprises a small-diameter section and a large-diameter section which are coaxially distributed, wherein the positioning mandrel inner shaft 801 formed by the small-diameter section is installed in the spool shaft 7 in a clearance fit manner, and the positioning mandrel outer shaft 802 formed by the large-diameter section is used for being fixedly connected with the head part. The outer diameters of the positioning sleeve shaft 6, the spool outer shaft 702 and the positioning core outer shaft 802 are the same. In application, the invention can be integrally penetrated and fixed in two opposite perforations formed at the head part, the outer edge of the positioning sleeve shaft 6 is tightly matched and fixed with one perforation, the outer edge of the positioning core outer shaft 802 is tightly matched and fixed with the other perforation, the position of the drum outer shaft 702 between the two perforations is fixed with the strings, the drum shaft 7 can flexibly rotate relative to the positioning sleeve shaft 6 and the positioning mandrel 8, and then the tension degree of the strings is adjusted through the rotation of the drum shaft 7. To ensure the stability of the present invention in fixing with the body, raised stripes for increasing friction with the perforations in the body are provided on the axial surfaces of the positioning sleeve shaft 6 and the positioning core outer shaft 802, respectively.
The adjusting device comprises an annular chute 601 coaxially fixed at the upper end of the positioning sleeve shaft 6 and a knob 1 coaxially rotatably arranged at the outer edge of the annular chute 601. The inner edge of the knob 1 is provided with a convex edge 101 which is in rotary fit with the outer edge of the annular chute 601, and a jelly for increasing the damping ratio is arranged at the fit position of the convex edge 101 and the annular chute 601. The annular runner 601 and the knob 1 are shown in fig. 3 and 4, respectively. The upper end of the inner drum shaft 701 is positioned in the annular chute 601 and is coaxially and fixedly provided with a pin disc 5, and the pin disc 5 can rotate to drive the drum shaft 7 to rotate at the same speed. The knob 1 is eccentrically provided with a shaft hole 102, and a stepped shaft-shaped offset transmission shaft 2 is tightly matched and installed in the shaft hole 102. The small-diameter section of the offset transmission shaft 2 is arranged in the shaft hole 102 through tight fit, the rest part is arranged in the central hole of the cylindrical gear-shaped planetary gear 3 in a matched mode, the shaft shoulder is used for achieving the axial positioning function of the planetary gear 3, the planetary gear 3 is in meshed transmission connection with the annular gear 602 arranged on the inner edge of the annular chute 601, and a jelly used for increasing the damping ratio is also arranged at the matched position of the planetary gear 3 and the annular gear 602. As shown in fig. 5, the planetary gear 3 is further provided with a plurality of pin holes 301, the pin disc 5 is correspondingly provided with pin shafts 501 which are in inscribed fit with the pin holes 301, and the shaft diameter of the pin shafts 501 is smaller than the aperture of the pin holes 301, so that the planetary gear 3 can drive the pin disc 5 to rotate. The rotary knob 1 drives the planetary gear 3 to revolve around the axis of the spool shaft 7 while meshed with the annular gear 602 to rotate by biasing the transmission shaft 2, the pin hole 301 drives the pin shaft 501 tangent with the pin hole to rotate at a larger speed reduction ratio relative to the rotary knob 1, and then the spool outer shaft 702 is driven to rotate for adjusting strings.
Setting the tooth number of the planetary gear 3 as Z 2 The number of teeth of the inner gear ring 602 is Z 1 But it is noted that Z 2 And Z is 1 The numerical phase difference cannot be too large to avoid the phenomenon that the planetary gear 3 cannot be meshed with the ring gear 602.
Let the rotation angle of the knob 1 be recorded asThe rotation angle of the planetary gear 3 (equal to the rotation speed of the pin disc 5) is recorded as +.>. The rotation angle of the knob 1 and the pin plate 5 (i.e., the rotation angle of the spool shaft 7) is as follows: />。
In this embodiment, takeThe following formula can be introduced: />. Thus, when the knob 1 is rotated 7 times, the drum outer shaft 702 can be rotated 1 time, so that the invention can provide a large enough reduction ratio, and further can accurately tune the string to meet the actual working requirement.
In this embodiment, a step for radial positioning is provided at the upper end of the inner shaft of the spool shaft 7, and a mounting hole fitted with the step is provided at the center of the pin plate 5. The stepped positioning mandrel 8 can also play an axial positioning role on the positioning sleeve shaft 6 and the spool shaft 7, the upper end of the positioning mandrel inner shaft 801 is distributed in the annular chute 601 and is matched with the spring retainer ring 4, and the spring retainer ring 4 is used for axially positioning the positioning sleeve shaft 6, the spool shaft 7 and the positioning mandrel 8.
Claims (8)
1. A string fine tuning of little tooth difference planetary gear drive, its characterized in that: the string winder comprises a positioning sleeve shaft (6), a winding drum shaft (7) coaxially arranged in the positioning sleeve shaft (6), a positioning mandrel (8) coaxially arranged in the winding drum shaft (7) and an adjusting device for driving the winding drum shaft (7) to rotate so as to realize string fine adjustment, wherein the positioning sleeve shaft (6) and the positioning mandrel (8) are respectively used for being fixed with two opposite through holes formed in the head part of a string, and part of the winding drum shaft (7) extends out of the positioning sleeve shaft (6) for winding the string; the adjusting device comprises an annular chute (601) coaxially fixed on a positioning sleeve shaft (6) and a knob (1) coaxially rotatably arranged at the outer edge of the annular chute (601), one end of a drum shaft (7) far away from a string coiling part of the drum shaft is positioned in the annular chute (601) and is coaxially fixedly provided with a pin disc (5), an offset transmission shaft (2) is eccentrically arranged in the knob (1), a planet gear (3) is coaxially rotatably arranged on the offset transmission shaft (2), the planet gear (3) is in meshed transmission connection with an inner gear ring (602) positioned at the inner edge of the annular chute (601), a plurality of pin holes (301) are further formed in the planet gear (3), pin shafts (501) which are in inscribed fit with the pin holes (301) are correspondingly arranged on the pin disc (5), and the shaft diameter of the pin shafts (501) is smaller than the aperture of the pin holes (301) so that the planet gear (3) can drive the pin disc (5) to rotate;
the knob (1) is provided with a shaft hole (102) for installing an offset transmission shaft (2), the offset transmission shaft (2) is a stepped shaft, a small-diameter section part is installed in the shaft hole (102) through tight fit, the rest part is installed in a matched manner with a central hole of the planetary gear (3), and a shaft shoulder is used for realizing the axial positioning function of the planetary gear (3);
the inner edge of the knob (1) is provided with a convex edge (101) which is in rotary fit with the outer edge of the annular chute (601); and jelly used for increasing the damping ratio is respectively arranged at the matching position of the convex edge (101) and the annular chute (601) and the matching position of the planetary gear (3) and the annular gear (602).
2. The string trimmer of claim 1, wherein: the drum shaft (7) is provided with a step for radial positioning at one end far away from the string coiling part, and a mounting hole matched with the step is formed in the center of the pin disc (5).
3. The string trimmer of claim 1, wherein: one end of the positioning mandrel (8) far away from the part matched with the head is distributed in the annular chute (601) and is matched with the spring retainer ring (4), and the spring retainer ring (4) is used for positioning the sleeve shaft (6), the spool shaft (7) and the positioning mandrel (8) in the axial direction.
4. The string trimmer of claim 1, wherein: the spool shaft (7) and the positioning mandrel (8) are both stepped shafts, the spool shaft (7) comprises a spool inner shaft (701) of a small-diameter section and a spool outer shaft (702) of a large-diameter section, the spool inner shaft is installed in the positioning sleeve shaft (6) in a clearance fit mode, the spool outer shaft is used for coiling strings, and the positioning mandrel (8) comprises a positioning core inner shaft (801) of the small-diameter section and a positioning core outer shaft (802) fixedly connected with a head portion in the spool shaft (7) in a clearance fit mode.
5. The string trimmer of claim 4, wherein: the outer diameters of the positioning sleeve shaft (6), the outer reel shaft (702) and the outer positioning core shaft (802) are the same.
6. The string trimmer of claim 4, wherein: a string hole for fixing a string is provided on an axial surface of the drum outer shaft (702).
7. The string trimmer of claim 1, wherein: the planetary gear (3) is a cylindrical gear.
8. The string trimmer of claim 1, wherein: raised stripes for increasing friction force with the body are respectively arranged on the shaft surfaces of the positioning sleeve shaft (6) and the positioning core outer shaft (802).
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109473083A CN109473083A (en) | 2019-03-15 |
| CN109473083B true CN109473083B (en) | 2023-12-19 |
Family
ID=65674403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811427701.8A Active CN109473083B (en) | 2018-11-27 | 2018-11-27 | String fine-tuning mechanism driven by planetary gear with small tooth difference |
Country Status (1)
| Country | Link |
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| CN (1) | CN109473083B (en) |
Citations (6)
| 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 |
-
2018
- 2018-11-27 CN CN201811427701.8A patent/CN109473083B/en active Active
Patent Citations (6)
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 孔销式少齿差行星增速器的压力角计算方法及其影响因素;王凯杰;索双富;杨义勇;;机械传动(09);170-174 * |
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| Publication number | Publication date |
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| CN109473083A (en) | 2019-03-15 |
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