KR101701042B1 - Apparatus for adjustment of gear backlash - Google Patents
Apparatus for adjustment of gear backlash Download PDFInfo
- Publication number
- KR101701042B1 KR101701042B1 KR1020150075966A KR20150075966A KR101701042B1 KR 101701042 B1 KR101701042 B1 KR 101701042B1 KR 1020150075966 A KR1020150075966 A KR 1020150075966A KR 20150075966 A KR20150075966 A KR 20150075966A KR 101701042 B1 KR101701042 B1 KR 101701042B1
- Authority
- KR
- South Korea
- Prior art keywords
- unit
- eccentric ring
- follower
- gear
- hole
- Prior art date
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Classifications
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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
- F16H1/2863—Arrangements for adjusting or for taking-up backlash
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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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H57/022—Adjustment of gear shafts or bearings
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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
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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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
- F16H2001/323—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 eccentric crankshafts driving or driven by a gearing
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- F16H2057/022—
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
An invention relating to a gear backlash adjusting device is disclosed. The gear backlash adjuster according to the present invention includes: a motor unit having a rotating shaft; A driver unit coupled to the rotating shaft and having a gear teeth formed on an outer circumferential surface thereof; A longitudinal synchronizer having gear teeth formed on an outer circumferential surface thereof so as to be engaged with gear teeth of a driver unit; And a distance adjustment unit which is connected to the motor unit and adjusts the distance between the rotation center axis of the driver unit and the rotation center axis of the follower unit by moving the rotation axis.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear backlash adjusting device, and more particularly, to a gear backlash adjusting device capable of preventing wear of gears and reducing noise by adjusting backlash generated during rotation of gears.
Backlash refers to a gap between teeth when a pair of gears is engaged. Proper backlash is required to smoothly rotate a pair of gears. If the backlash is too small, the lubrication tends to be insufficient and the friction between the gear teeth becomes large. If the backlash is too large, the engagement of the gears becomes worse and the gears are liable to break.
Conventionally, there is a problem in that the lubricating oil is scattered by the centrifugal force during rotation of the gear, so that the lubricating oil is not substantially lubricated on the surface of the gear, resulting in noise due to wear of the gear. There is a problem that an abnormal noise is generated depending on the machining error and the grade of the gear.
Also, in the belt driving system in which the belt is connected to the conventional gear, there is a problem that a foreign matter enters between the belt and the gear, and the belt is broken due to the adjustment of the belt tension. Therefore, there is a need for improvement.
BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2014-0125133 (entitled "Vertical Multi-Joint Painting Robot Wrist Shaft Gear Backlash Prevention Apparatus"
SUMMARY OF THE INVENTION It is an object of the present invention to provide a gear backlash adjusting device capable of preventing wear of gears and reducing noise by adjusting backlash generated during rotation of gears.
The gear backlash adjuster according to the present invention includes: a motor unit having a rotating shaft; A driver unit coupled to the rotating shaft and having gear teeth formed on an outer circumferential surface thereof; A longitudinal synchronous fisher having gear teeth formed on an outer circumferential surface thereof so as to mesh with gear teeth of the drive gear; And a distance adjustment unit connected to the motor unit and adjusting the distance between the rotation center axis of the driver unit and the rotation center axis of the follower unit by moving the rotation axis.
In the present invention, the distance adjusting unit may include a fixing plate screwed to the motor unit and having a first through hole formed at a center thereof; And an eccentric ring coupled to the first through-hole and having a second through-hole formed in the center thereof.
In the present invention, the eccentric ring includes: a first eccentric ring press-fitted to the fixed plate; And a second eccentric ring protruded from the first eccentric ring and eccentrically centered with the center of the first eccentric ring.
In the present invention, the driver unit passes through the first through hole and the second through hole and is connected to the rotating shaft.
In the present invention, the fixing plate is formed with an opening surface having one side open, a plurality of groove portions are formed on the outer peripheral surface of the first eccentric ring, and the fastening member is fastened to the cover portion, And the position of the fixing plate is adjusted while rotating the eccentric ring in one direction by using the groove portion in a state where the fastening member is fastened to the cover portion and the motor portion, The distance between the rotation center axes of the follower fishermen is adjusted.
The present invention further includes a lubricant receiving portion provided on one side of the follower contact portion so that the gear teeth of the follower contact portion are immersed in the lubricant.
The present invention further includes a scattering cut-off portion formed to be larger than the size of the follower fisher portion and spaced apart from the one surface of the follower fisher portion to prevent scattering of lubricant oil in the follower fisher portion.
In the present invention, the scattering blocking portion is fixed to the fixed plate, and a recessed groove is formed at one side of the scatter blocking portion so as to be recessed to avoid interference with the rotation center axis of the driving unit.
In the present invention, a power transmission shaft is installed in the follower fisher unit, and the power transmission shaft is provided with a bearing that blocks the lubricant from moving along the longitudinal direction of the power transmission shaft.
According to the present invention, the lubricating oil is automatically lubricated on the gear surface when the gear is rotated, so that the noise due to wear of the gear can be reduced.
Further, according to the present invention, it is possible to adjust the inter-shaft distance between the gears, thereby reducing noise generation while controlling gear backlash.
Further, according to the present invention, the wear life of the gear can be extended by preventing the occurrence of wear between the gears.
Also, according to the present invention, it is possible to prevent wear between gears and reduce noise, thereby reducing loss of power transmission generated between gears.
1 is a perspective view schematically showing a gear backlash adjusting apparatus according to an embodiment of the present invention.
2 is an exploded perspective view schematically showing a gear backlash adjusting apparatus according to an embodiment of the present invention.
3 is a perspective view schematically showing the assembling of the motor part and the distance adjusting part according to the embodiment of the present invention.
4 is a perspective view schematically showing the operation of the gear backlash adjusting device according to the embodiment of the present invention.
5 is a front view schematically showing a gear backlash adjusting device according to an embodiment of the present invention.
6 is a plan view schematically showing a gear backlash adjusting apparatus according to an embodiment of the present invention.
7 is a cross-sectional view schematically showing a gear backlash adjusting apparatus according to an embodiment of the present invention.
FIG. 8 is a cross-sectional view schematically showing the state of the fastening member for fastening the fixing plate and the motor unit in FIG. 7;
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a gear backlash adjuster according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. Further, terms to be described below are defined in consideration of the functions of the present invention, which may vary according to the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.
FIG. 1 is a perspective view schematically showing a gear backlash adjusting apparatus according to an embodiment of the present invention, FIG. 2 is an exploded perspective view schematically showing a gear backlash adjusting apparatus according to an embodiment of the present invention, 4 is a perspective view schematically showing the operation of the gear backlash adjusting apparatus according to the embodiment of the present invention, and FIG. 5 is a perspective view showing the operation of the gear backlash adjusting apparatus according to the embodiment of the present invention. FIG. 6 is a plan view schematically showing a gear backlash adjusting apparatus according to an embodiment of the present invention, and FIG. 7 is a plan view showing a gear backlash adjusting apparatus according to an embodiment of the present invention. FIG. 8 is a cross-sectional view schematically showing a gear backlash adjusting device according to a second embodiment of the present invention. FIG. A sectional view showing a state schematically.
1 to 3, the gear backlash adjuster according to an embodiment of the present invention includes a
The
The
The
The
The
The
On the one surface (reference left side in Fig. 3) of the fixing
The
The
A plurality of
A
On one surface (the reference rear surface in FIG. 2) of the
The scattering cut-off
The
Hereinafter, the operation of the present invention will be described.
The
A tool such as a pin is inserted into the
The adjustment of the distance D between the center axis of the driving
Meanwhile, in the present invention, lubricating oil accommodated in the lubricating
The lubricant, which is moved along the
The lubricant is gathered in the
According to the present invention, the lubricating oil is automatically lubricated to the gear teeth during rotation of the
According to the present invention, the distance D can be adjusted by the
Further, according to the present invention, it is possible to extend the service life of the
Also, according to the present invention, it is possible to reduce the loss of power transmission generated between the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the true scope of the present invention should be determined by the following claims.
5: Cover part 10: Motor part
11: Pivot shaft 12:
20: driver fisher 30: longitudinal synchronizer
40: distance adjustment part 41: fixed plate
42: first through hole 43: opening face
45: eccentric ring 46: second through hole
47: first eccentric ring 48: second eccentric ring
49: groove portion 50: lubricating oil receiving portion
60: scattering blocking portion 61: concave groove
70: fastening member 80: bearing
90: Power transmission shaft
D: Distance between the rotation center axis of the drive unit and the rotation center axis of the follower unit
Claims (9)
A driver unit coupled to the rotating shaft and having gear teeth formed on an outer circumferential surface thereof;
A longitudinal synchronous fisher having gear teeth formed on an outer circumferential surface thereof so as to mesh with gear teeth of the drive gear;
A distance adjusting unit, connected to the motor unit, for adjusting the distance between the rotation center axis of the driver unit and the rotation center axis of the follower unit by moving the rotation axis;
A lubricant receiving portion provided on one side of the follower contact portion so that the gear teeth of the follower contact portion are immersed in the lubricant;
And a scattering blocking portion that is formed to be larger than the size of the follower synchronizer and is spaced apart from one surface of the follower synchronizer and that blocks scattering of lubricating oil in the follower synchronizer,
The distance adjustment unit,
A fixing plate screwed to the motor unit and having a first through-hole at a center thereof; And
And an eccentric ring coupled to the first through-hole and having a second through-hole formed in the center thereof,
The scattering blocking portion is fixed to the fixing plate,
Wherein the one side of the scattering cut-off portion is formed with a concave groove cut out concavely in order to avoid interference with the rotation center axis of the drive unit.
The eccentric ring
A first eccentric ring press-fitted to the fixed plate; And
And a second eccentric ring projecting from the first eccentric ring and centered eccentrically with a center of the first eccentric ring.
And the drive gear unit is connected to the pivot shaft via the first through hole and the second through hole.
Wherein the fixing plate is formed with an opening surface having one side opened,
A plurality of grooves are formed on an outer peripheral surface of the first eccentric ring,
Wherein the fastening member fastens the cover portion and the motor portion located on the front surface of the fixed plate,
The eccentric ring is rotated in one direction by using the groove portion while the fastening member is fastened to the cover portion and the motor portion, and the position of the fastening plate is adjusted, And the distance between the rotation center axes of the fisher units is adjusted.
The power transmission shaft is provided in the follower gear portion,
Wherein the power transmission shaft is provided with a bearing that blocks the lubricant from moving along the longitudinal direction of the power transmission shaft in the follower synchronizer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150075966A KR101701042B1 (en) | 2015-05-29 | 2015-05-29 | Apparatus for adjustment of gear backlash |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150075966A KR101701042B1 (en) | 2015-05-29 | 2015-05-29 | Apparatus for adjustment of gear backlash |
Publications (2)
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KR20160139973A KR20160139973A (en) | 2016-12-07 |
KR101701042B1 true KR101701042B1 (en) | 2017-01-31 |
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KR1020150075966A KR101701042B1 (en) | 2015-05-29 | 2015-05-29 | Apparatus for adjustment of gear backlash |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102095871B1 (en) * | 2019-04-22 | 2020-04-02 | 주식회사 케이엠더블유 | Clamping apparatus for antenna |
KR102206659B1 (en) * | 2020-03-19 | 2021-01-22 | 주식회사 케이엠더블유 | Clamping apparatus for antenna |
US11724390B2 (en) * | 2021-03-29 | 2023-08-15 | Samsung Electronics Co., Ltd. | Systems and methods for automated preloading of actuators |
US11712804B2 (en) | 2021-03-29 | 2023-08-01 | Samsung Electronics Co., Ltd. | Systems and methods for adaptive robotic motion control |
US11731279B2 (en) | 2021-04-13 | 2023-08-22 | Samsung Electronics Co., Ltd. | Systems and methods for automated tuning of robotics systems |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080149413A1 (en) * | 2005-04-04 | 2008-06-26 | Thyssenkrupp Presta Ag | Electromechanical Power Assisted Steering System |
JP2009097676A (en) * | 2007-10-18 | 2009-05-07 | Aisin Ai Co Ltd | Lubricating structure in power transmission mechanism |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101401204B1 (en) * | 2007-11-27 | 2014-05-30 | 두산인프라코어 주식회사 | Gear backlash controlling apparatus for manufacturing machine |
KR20150023999A (en) * | 2013-08-26 | 2015-03-06 | 한국정밀기계(주) | Gear unit backlash adjuster |
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2015
- 2015-05-29 KR KR1020150075966A patent/KR101701042B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080149413A1 (en) * | 2005-04-04 | 2008-06-26 | Thyssenkrupp Presta Ag | Electromechanical Power Assisted Steering System |
JP2009097676A (en) * | 2007-10-18 | 2009-05-07 | Aisin Ai Co Ltd | Lubricating structure in power transmission mechanism |
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KR20160139973A (en) | 2016-12-07 |
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