CN205639489U - Planet reduction gear that back clearance is adjustable - Google Patents
Planet reduction gear that back clearance is adjustable Download PDFInfo
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- CN205639489U CN205639489U CN201620501273.9U CN201620501273U CN205639489U CN 205639489 U CN205639489 U CN 205639489U CN 201620501273 U CN201620501273 U CN 201620501273U CN 205639489 U CN205639489 U CN 205639489U
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Abstract
The utility model discloses a planet reduction gear that back clearance is adjustable, characterized by: in the cavity that comprises output end cover and ring gear overcoat and motor end cover, being equipped with and forming the driven gear pair of one -level planet, sun gear and planet wheel and ring gear all adopt the cylinder straight -teeth gear of axial change tooth thickness, be equipped with the planet wheel between a ring gear overcoat terminal surface and the output end cover terminal surface are ring gear clearance adjustment gasket and increase clearance preset gasket equipped with the sun gear between another terminal surface of ring gear overcoat and the motor end cover terminal surface planet wheel clearance adjustment gasket, the utility model discloses a transfer the entire row star gear ring gear clearance adjustment gasket and sun gear the thickness of planet wheel clearance adjustment gasket comes the vice back lash of adjusting gear, realizes the little back clearance transmission of reduction gear. The utility model discloses use the gear assembling reduction gear of conventional grade of precision (7 grades), the back clearance numerical value of actually installing reaches 3 minute of arcs.
Description
Technical field
This utility model relates to the Planetary Gear Transmission in machine driving, particularly a kind of adjustable planetary gearing speed reducer of back clearance.
Background technology
Involute planetary gearing speed-reducer as slowing down, speedup and variable speed drive, be widely used in various mechanically.Planet
Transmission generally uses several planetary gear to transmit load simultaneously, make power dividing and reasonably have employed internal messing, thus has: knot
Structure is compact, volume is little, lightweight, gear range big, and transmission efficiency height, smooth running, noise are little, can carry out moving
The advantages such as synthesis and decomposition.
Output revolving shaft is had to the planetary gearing speed reducer of two kinds of duties counterclockwise and clockwise, it is always desirable to little back clearance or
Zero back clearance transmission, the angle return difference of i.e. two kinds duty conversions is the least, as being mainly used in CNC Digit Control Machine Tool, engraving machine
Deng servomotor, motor decelerator.The back clearance of the general every primary speed-down of planetary gearing speed reducer is not required, for having
Back clearance requires and is not less than 0.5 °, it is common that reduces gear meshing backlass and also verifies its meshing backlass；If but requiring the back of the body
Gap at the decelerator below 10 ', then must be selected high-precision gear, otherwise cannot ensure the assembling under minimum back lash
And normal operation；What Design of Speed Reducer middle gear transmission at present was selected mostly is spur gear wheel.Its weak point existed is:
1, requiring back clearance at the decelerator below 10 ', high class gear needs roll flute to process, and not only the process-cycle is long, and becomes
Originally it is substantially increased.
2, use the decelerator of spur gear wheel, gear wear the back lash caused increases the problem causing back clearance change big, root
Originally cannot solve only to scrap.
Utility model content
This utility model is for avoiding the weak point existing for above-mentioned prior art, it is provided that a kind of adjustable Gear Planet Transmission of back clearance is slowed down
Device, is both designed as axially becoming the spur gear wheel of transverse tooth thickness by all of for decelerator gear joint spur gear wheel, by adjusting two
The axial distance of gear regulates the back lash of a pair gear pair, it is achieved the little back clearance transmission of decelerator.
This utility model solves technical problem and be the technical scheme is that
Being structurally characterized in that of this utility model back clearance is adjustable planetary gearing speed reducer: by output end cap and gear ring overcoat and electric motor end cap
In the cavity constituted, be provided with the gear pair of composition primary planet transmission, i.e. sun gear is meshed with planetary gear, and planetary gear is again with interior
Gear ring is meshed；Described sun gear and planetary gear and ring gear all use the spur gear wheel axially becoming transverse tooth thickness；The described sun
Wheel is arranged on electric machine main shaft, uses sun gear retainer ring spacing；Described planetary gear endoporus is provided with needle bearing and is arranged on bearing pin,
Spacing with planetary gear baffle ring, that bearing pin is corresponding with on output shaft pin shaft hole interference fit；Set between output shaft and output end cap
There are deep groove ball bearing and outside framework oil seal, and spacing with output shaft circlip；Ring gear is limited to outside gear ring by gear ring housing screw
In set endoporus；It is provided with planetary gear-gear ring gap adjustment pad between gear ring overcoat end face and output end cap end face and increase gap is pre-
Adjust pad, with the fastening of end cap-gear ring attachment screw, between gear ring overcoat other end and electric motor end cap end face, be provided with sun gear-OK
Star-wheel gap adjustment pad, with gear ring-motor attachment screw fastening；Sealing ring is separately mounted to export end cap and electric motor end cap and tooth
The cylindrical port of circle overcoat inner hole.
Construction features of the present utility model lies also in: described sun gear, planetary gear and ring gear are both designed as axially becoming the circle of transverse tooth thickness
Post spur gear, the taper angle theta that the described spur gear wheel axially becoming transverse tooth thickness is provided with is equal, and the value of θ is 0.5 ° to 4.5 °.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, this utility model can use conventional accuracy class, the gear of i.e. 7 grades to assemble decelerator；This is because tooth in this structure
Wheel axially becomes the spur gear wheel of transverse tooth thickness for using, and is provided with cone angle, can adjust gear radially by regulation gear axial distance
Back lash, it is ensured that little back clearance, actual installation back clearance can reach 3 arcs and divides.
2, the back clearance produced because the back lash caused of gear wear increases becomes big, still can by regulation gear axially away from
From adjusting gear radially back lash, it is ensured that little back clearance, thus avoid scrapping of decelerator.
Accompanying drawing explanation
Fig. 1 is that this utility model structure section view is always schemed；
Fig. 2 is Section A-A sectional view in Fig. 1；
Fig. 3 is a pair gear pair mesh schematic representation of the spur gear wheel becoming transverse tooth thickness vertically；
Fig. 4 is the back lash schematic diagram of a pair gear pair of regulation；
Label in figure: 1 output shaft, 2 output shaft circlips, 3 deep groove ball bearings, 4 outside framework oil seals, 5 gear ring housing screws,
6 output end caps, 7 end caps-gear ring attachment screw, 8 planetary gears-gear ring gap adjustment pad, 9 sealing rings, 10 gear ring overcoats,
11 sun gear back-up rings, 12 ring gears, 13 sun gears, 14 gear rings-motor attachment screw, 15 electric motor end caps, 16 planetary gears,
17 bearing pins, 18 planetary gear baffle rings, 19 sun gears-planetary gear gap adjustment pad, the 20 presetting pads in increase gap, 21 needle rollers
Bearing, 22 electric machine main shafts.
Detailed description of the invention
Seeing Fig. 1 and Fig. 2, the present embodiment is the adjustable planetary gearing speed reducer of a kind of back clearance of engraving machine.By output end cap 6
With in the cavity of gear ring overcoat 10 and electric motor end cap 15 composition, it is provided with the gear pair of composition primary planet transmission, i.e. sun gear 13
Being meshed with planetary gear 16, planetary gear 16 is meshed with ring gear 12 again；Described sun gear 13 and planetary gear 16 and internal tooth
Circle 12 all uses the spur gear wheel axially becoming transverse tooth thickness；Described sun gear 13 is arranged on electric machine main shaft 22, uses sun catch
Enclose 11 spacing；Described planetary gear 16 endoporus is provided with needle bearing 21 and is arranged on bearing pin 17, limits with planetary gear baffle ring 18
Position, the pin shaft hole interference fit that bearing pin 17 is corresponding with on output shaft 1；It is provided with zanjon between output shaft 1 and output end cap 6
Ball bearing 3 and outside framework oil seal 4, and spacing with output shaft circlip 2；Ring gear 12 is limited to tooth by gear ring housing screw 5
In circle overcoat 10 endoporus；It is provided with planetary gear-gear ring gap adjustment pad between gear ring overcoat 10 end face and output end cap 6 end face
8 and increase gap presetting pad 20, fasten with end cap-gear ring attachment screw 7, gear ring overcoat 10 other end and electric motor end cap
It is provided with sun gear-planetary gear gap adjustment pad 19 between 15 end faces, fastens with gear ring-motor attachment screw 14；Sealing ring 9
It is separately mounted to the cylindrical port exporting end cap 6 and electric motor end cap 15 with gear ring overcoat 10 inner hole.
In the present embodiment, sun gear 13, planetary gear 16 and ring gear 12 are both designed as axially becoming the spur gear wheel of transverse tooth thickness, described
The taper angle theta that is provided with of the spur gear wheel axially becoming transverse tooth thickness be equal, the value of θ is 0.5 ° to 4.5 °.The present embodiment is preferred
The value of θ be 1 °.
See a pair gear pair mesh schematic representation that Fig. 3, Fig. 3 are the spur gear wheel becoming transverse tooth thickness vertically.Of the present utility model
Design principle is on the basis of a pair spur gear wheel engagement, axial line distance S of two roller gears is kept constant, is formed
Axially become the engaged transmission of the cylindrical gear pair of transverse tooth thickness, infinite number of cross section form a roller gear, the transverse tooth thickness of gear continuously
Being change in each cross section, the gear pair of two gear compositions is all according to modification coefficient with for " fixed in arbitrary section
Value " design.
The present embodiment middle gear parameter, the speed ratio of decelerator calculate:
Ring gear 12 parameter: the number of teeth: zb=48；Modulus: m=1.25；Pressure angle: a=20 °；Cone angle: θ=1 °；
Sun gear 13 parameter: the number of teeth: za=16；Modulus: m=1.25；Pressure angle: a=20 °；Cone angle: θ=1 °；
Planetary gear 16 parameter: the number of teeth: zc=15；Modulus: m=1.25；Pressure angle: a=20 °；Cone angle: θ=1 °；
The speed ratio of decelerator:
See Fig. 4, when the back lash of a pair gear pair is bigger, regulate gear radially by the axial distance of carrier wheel
Back lash, after i.e. two gears move axially relatively distance L, backlash will be become Δ 1 from Δ 0；When axis direction cone angle
During θ=1 °, when being often axially moveable distance L=1mm, can eliminate monolateral backlash 0.0087mm, its computing formula is:
L × tg (θ/2)=1 × tg (1 °/2)=0.0087 (mm)
This utility model is by adjusting planetary gear-gear ring gap adjustment pad 8 and the thickness of sun gear-planetary gear gap adjustment pad 19
Degree regulates gear pair back lash, and actual installation back clearance numerical value reaches 3 arcs and divides.
Claims (2)
1. the adjustable planetary gearing speed reducer of back clearance, it is characterised in that: by output end cap (6) and gear ring overcoat (10) and motor
In the cavity that end cap (15) is constituted, it is provided with the gear pair of composition primary planet transmission, the sun gear (13) in described gear pair and row
Star-wheel (16) is meshed, and planetary gear (16) is meshed with ring gear (12)；Described sun gear (13), planetary gear (16) and ring gear (12)
All use the spur gear wheel axially becoming transverse tooth thickness；Described sun gear (13) is arranged on electric machine main shaft (22), with sun gear back-up ring (11)
Spacing；Described planetary gear (16) endoporus is provided with needle bearing (21) and is arranged on bearing pin (17), spacing with planetary gear baffle ring (18),
Bearing pin (17) corresponding pin shaft hole interference fit upper with output shaft (1)；It is provided with deep-groove ball between output shaft (1) and output end cap (6)
Bearing (3) and outside framework oil seal (4), and spacing with output shaft circlip (2)；Ring gear (12) is limited to tooth by gear ring housing screw (5)
In circle overcoat (10) endoporus；It is provided with planetary gear-gear ring gap between one end face and output end cap (6) end face of gear ring overcoat (10) to adjust
Joint pad (8) and the increase presetting pad in gap (20), with end cap-gear ring attachment screw (7) fastening, the other end of gear ring overcoat (10)
And it is provided with sun gear-planetary gear gap adjustment pad (19) between electric motor end cap (15) end face, tight with gear ring-motor attachment screw (14)
Gu；Sealing ring (9) is separately mounted to the cylindrical port exporting end cap (6) and electric motor end cap (15) with gear ring overcoat (10) inner hole.
A kind of adjustable planetary gearing speed reducer of back clearance the most according to claim 1, it is characterised in that: described sun gear (13),
The taper angle theta that the spur gear wheel axially becoming transverse tooth thickness that planetary gear (16) and ring gear (12) use is provided with is equal, and taper angle theta is
0.5 ° to 4.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620501273.9U CN205639489U (en) | 2016-05-23 | 2016-05-23 | Planet reduction gear that back clearance is adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620501273.9U CN205639489U (en) | 2016-05-23 | 2016-05-23 | Planet reduction gear that back clearance is adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205639489U true CN205639489U (en) | 2016-10-12 |
Family
ID=57053334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620501273.9U Active CN205639489U (en) | 2016-05-23 | 2016-05-23 | Planet reduction gear that back clearance is adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205639489U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840741A (en) * | 2016-05-23 | 2016-08-10 | 合肥波林新材料股份有限公司 | Back-clearance-adjustable planetary transmission speed reducer |
| CN110756889A (en) * | 2019-11-27 | 2020-02-07 | 太重煤机有限公司 | Cold pendulum shear cone copper sleeve gap adjusting device |
-
2016
- 2016-05-23 CN CN201620501273.9U patent/CN205639489U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840741A (en) * | 2016-05-23 | 2016-08-10 | 合肥波林新材料股份有限公司 | Back-clearance-adjustable planetary transmission speed reducer |
| CN110756889A (en) * | 2019-11-27 | 2020-02-07 | 太重煤机有限公司 | Cold pendulum shear cone copper sleeve gap adjusting device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |