CN103206504B - A kind of buffer-type sheave drive mechanism - Google Patents
A kind of buffer-type sheave drive mechanism Download PDFInfo
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- CN103206504B CN103206504B CN201310090874.6A CN201310090874A CN103206504B CN 103206504 B CN103206504 B CN 103206504B CN 201310090874 A CN201310090874 A CN 201310090874A CN 103206504 B CN103206504 B CN 103206504B
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- sheave
- buffer
- drive mechanism
- buffering
- elliptic gear
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Abstract
The invention discloses a kind of buffer-type sheave drive mechanism, including the gear train inputted for power, one end of described gear train and a tumbler shaft is connected, the other end of described tumbler shaft connects driver plate, there is on described driver plate needle roller bearing pin and convex Locking arc, mechanism also includes sheave, there is on described sheave the suitable driving groove of some and described needle roller bearing pin and the suitable recessed Locking arc of some and described convex Locking arc, described sheave and output shaft connect, and mechanism also includes reducing the buffer unit of impact between described needle roller bearing pin and described sheave.Owing to adding buffer unit in sheave drive mechanism so that the impact between needle roller bearing pin and driving groove is greatly reduced.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of buffer-type sheave drive mechanism.
Background technology
Geneva mechanism is usually used in the machinery of the interrupted division of industrial robot tool, location and indexing.Present
In Geneva mechanism, active drive arm typically does uniform rotation, and the radius of gyration is constant.When active drive arm passes motion to
During sheave, owing to the needle roller bearing pin on active drive arm radially does rolling relatively in the driving groove of sheave, cause sheave
Stress action spot is also along radially changing.If the needle roller bearing pin on active drive arm is with constant peripheral speed transmission fortune
Time dynamic, causing sheave during once indexing, the angular velocity of sheave is from changing from small to big, then diminishes greatly to having.And in indexing
The first half section of process and the angular acceleration direction of second half section are the most different, therefore when on the needle roller pin axle grooved pulley on active drive arm
When driving groove exists gap, impact can be produced.This motion having resulted in Geneva mechanism and dynamic trait are undesirable.
The subject matter that this Geneva mechanism exists in the design is that mechanism has impact, at work both when active drive arm
On needle roller bearing pin when initially entering and leave sheave drive groove, the two operating instant can produce impact.And this impact
Increase along with the minimizing of sheave groove number.Thus cause Geneva mechanism bumpy motion.
Summary of the invention
The present invention is directed to a kind of buffer-type sheave drive mechanism of problem proposition that prior art exists, it is therefore intended that improve groove
The stability of wheel drive mechanism.
The present invention is achieved in that
A kind of buffer-type sheave drive mechanism, including the gear train inputted for power, described gear train and a tumbler shaft
One end be connected, the other end of described tumbler shaft connects driver plate, and described driver plate has needle roller bearing pin and convex Locking arc, the machine
Structure also includes sheave, and described sheave has the suitable driving groove of some and described needle roller bearing pin and some and described convex lock
The recessed Locking arc that only arc is suitable, described sheave and output shaft connect, mechanism also include reducing described needle roller bearing pin and
The buffer unit of impact between described sheave.
Above-mentioned a kind of buffer-type sheave drive mechanism, wherein: described buffer unit includes the master forming described gear train
Dynamic elliptic gear and driven elliptic gear, described active elliptic gear connects power shaft, described driven elliptic gear and described master
Dynamic elliptic gear is meshed and and the one end fits connection of described tumbler shaft.
Above-mentioned a kind of buffer-type sheave drive mechanism, wherein: described active elliptic gear and described driven elliptic gear
Bias is connected on described power shaft and described tumbler shaft respectively, and junction is respectively positioned on corresponding oval major axis, described master
On the major axis of dynamic elliptic gear, on the major axis of one end farther out, the corresponding junction of distance and described driven elliptic gear, distance is corresponding
Nearer one end, junction is meshed.
Above-mentioned a kind of buffer-type sheave drive mechanism, wherein: described buffer unit includes coaxially and consolidating with described sheave
Being connected in the buffering wheel of the one side of described sheave, described buffering wheel week is along having equally distributed recess and protuberance, described recess
All identical with described driving groove quantity with the quantity of protuberance, described recess and described driving groove are correspondingly arranged, described protuberance and institute
State recessed Locking arc to be correspondingly arranged；Described buffer unit also includes buffering connecting rod, and described buffering connecting rod is provided with roller and can make
Roller and described buffering wheel against snubber elastomeric device.
Above-mentioned a kind of buffer-type sheave drive mechanism, wherein: described snubber elastomeric device includes buffer pull rod and buffering
Slide, is provided with buffer spring, described buffer pull rod one end and described buffering connecting rod and is hinged in described buffering slide, the other end is inserted
Enter described buffering slide, described buffer pull rod insert the part in described buffering slide be arranged with some can the most described buffering
The buffering gland that pull bar slides and buffer spring can be driven to compress, the end of the other end of described buffer pull rod is fixed with stop
Block.
Above-mentioned a kind of buffer-type sheave drive mechanism, wherein: described sheave drive mechanism also includes a locking system, institute
State locking system and include locking lever and locking elastic device, described locking lever has and can embed described driving groove and prevent
The lock post that only sheave rotates.
Above-mentioned a kind of buffer-type sheave drive mechanism, wherein: described locking lever includes bow and straight-bar, described arc
The junction of shape bar and described straight-bar is rotatably connected in frame, and described lock post is positioned on straight-bar, and described driver plate sets
Having can be by the fore-set of described bow jack-up.
Above-mentioned a kind of buffer-type sheave drive mechanism, wherein: between described buffering wheel and described output shaft, be provided with inner sleeve,
Described inner sleeve is bolted on described sheave, described buffering wheel be set in described in put.
Above-mentioned a kind of buffer-type sheave drive mechanism, wherein: turning between described driven elliptic gear and described driver plate
Arm axle is provided with bearing, and described bearing is connected with bearing cap, and described bearing cap is fixed in frame.
Above-mentioned a kind of buffer-type sheave drive mechanism, wherein: described driven elliptic gear and described tumbler shaft pass through key
Connecting, described driver plate and described tumbler shaft are by bonded.
A kind of buffer-type sheave drive mechanism provided by the present invention, owing to adding buffering dress in sheave drive mechanism
Put so that the impact between needle roller bearing pin and driving groove is greatly reduced.
Accompanying drawing explanation
Fig. 1 is the structural representation of sheave drive mechanism of the present invention.
Fig. 2 is the A-A view of Fig. 1 of the present invention.
Fig. 3 is active elliptic gear and the cooperation schematic diagram of driven elliptic gear in sheave drive mechanism of the present invention.
Fig. 4 is part-structure schematic diagram in sheave drive mechanism of the present invention.
Buffer unit when Fig. 5 is that in sheave drive mechanism of the present invention, needle roller bearing pin is in first half section after entering driving groove shows
It is intended to.
Buffer unit schematic diagram when Fig. 6 is that in sheave drive mechanism of the present invention, needle roller bearing pin enters driving groove innermost end.
Detailed description of the invention
Hereinafter accompanying drawing the most in conjunction with the embodiments, is described in further detail the detailed description of the invention of the present invention, so that the present invention
Technical scheme is more readily understood, grasps.Should be appreciated that specific embodiment described herein only in order to explain the present invention, not
For limiting the present invention.
The invention provides a kind of buffer-type sheave drive mechanism, refering to Fig. 1, Fig. 2, mechanism includes gear train, pivoted arm
Axle 300, driver plate 400, sheave 500 and buffer unit.Wherein gear train is connected with one end of tumbler shaft 300,
The power that motor is exported by gear train, described driver plate 400 is connected to described in the other end of described tumbler shaft 300 dial
There is on dish 400 needle roller bearing pin 420 and convex Locking arc 430, described sheave 500 has some and described needle roller bearing pin 420 phase
Adaptive driving groove 510 and the suitable recessed Locking arc 520 of some and described convex Locking arc 430, driving groove 510 and recessed locking
The quantity of arc 520 can be arranged as required to.Buffer unit can reduce between described needle roller bearing pin 420 and described sheave 500
Impact.Gear train is connected with power shaft, and sheave 500 is connected with output shaft, and the power that motor produces is passed through gear shaft by power shaft
Incoming sheave drive mechanism, and exported by output shaft.
Described gear train is simultaneously worked as cushioning effect by the present invention.Specifically, as it is shown on figure 3, described buffer unit bag
Including active elliptic gear 100 and the driven elliptic gear 200 forming described gear train, described active elliptic gear 100 connects defeated
Enter axle, described driven elliptic gear 200 and described active elliptic gear 100 be meshed and and one end of described tumbler shaft 300 join
Close and connect.Described active elliptic gear 100 and described driven elliptic gear 200 bias respectively are connected to described power shaft and described
On tumbler shaft 300, and junction is respectively positioned on corresponding oval major axis, distance phase on the major axis of described active elliptic gear 100
The one end answering one end farther out, junction nearer with the corresponding junction of distance on the major axis of described driven elliptic gear 200 is nibbled mutually
Close.
In the case of unbuffered, enter the first half section of driving groove 510 at needle roller bearing pin 420, the angle speed of sheave 500
Degree is to increase, and angular acceleration is more than zero；The angular velocity of sheave 500 when needle roller bearing pin 420 arrives the innermost end of driving groove 510
Reaching maximum, enter the second half section, the angular velocity of sheave 500 reduces, and angular acceleration is less than zero, is entering or is exiting driving groove
When 510, angular velocity is with the presence of sudden change greater impact.Refering to Fig. 3, when active elliptic gear 100 turns over angle with uniform angular velocity ω 1
During d φ 1, driven elliptic gear 200 is driven to turn over angle d φ 2 with momentary angular speed omega 2 accordingly, it can be deduced that moment transmission
Ratio: i21==.Calculate according to theory of mechanics: driven elliptic gear 200 angular velocity omega 2 and actively elliptic gear
The relation of 100 uniform angular velocity ω 1 is: ω 2==×=.The most ellipse
When Knucle-gear 100 does constant speed revolution, driven elliptic gear 200 angular velocity periodically changes to maximum from minimum, becomes from maximum again
To minimum.
When needle roller bearing pin 420 enter driving groove 510 time, the angular velocity of sheave 500 is being gradually increased, and this time
Wait the angular velocity of driven elliptic gear 200 the most from large to small, when active drive arm needle roller bearing pin 420 enters into driving groove 510
During the inside, the angular velocity of driven elliptic gear 200 is minimum.When active drive arm needle roller bearing pin 420 is leaving sheave 500
During driving groove 510, the angular velocity of sheave 500 is being gradually reduced, and the angular velocity of driven elliptic gear in this time 200 is just
Change from small to big well.The most just can effectively reduce the impact that sheave 500 mechanism produces.Simultaneously when driven elliptic gear
The when that the angular velocity of 200 increasing, the when that convex Locking arc 430 dallying, so can increase the convex locking on driver plate 400
Arc 430 dallies angular velocity, reduces the idle period, improves work efficiency.
Another kind of buffer unit presented below, this buffer unit and above-mentioned bielliptic(al) buffer unit can be in conjunction with jointly making
With, it is also possible to it is used alone.The present embodiment, as a example by being used in combination, so uses double buffering so that buffering effect is the most excellent
More.
Specifically, refering to Fig. 5, Fig. 6, described buffer unit includes buffering wheel 600, buffering connecting rod 700 and snubber elastomeric
Device 800.Described buffering wheel 600 and described sheave 500 are coaxial and be connected in the one side of described sheave 500, described buffering wheel
600 weeks along having equally distributed recess 620 and protuberance 610, the quantity of described recess 620 and protuberance 610 all with described transmission
Groove 510 quantity is identical, and described recess 620 and described driving groove 510 are correspondingly arranged, described protuberance 610 and described recessed Locking arc 520
It is correspondingly arranged；One end of described buffering connecting rod 700 is hinged in frame, and the other end and described snubber elastomeric device 800 are hinged, slow
Rush connecting rod 700 and be provided with roller 710.Snubber elastomeric device 800 can make roller 710 and described buffering wheel 600 against.
Refering to Fig. 5, Fig. 6, snubber elastomeric device 800 is equivalent to a kind of return structure, the snubber elastomeric device 800 of the present invention
The elastic construction of routine can be used, present embodiments provide one preferably scheme, specifically: described snubber elastomeric device
800 include buffer pull rod 840 and buffering slide 850, are provided with buffer spring 820, described buffer pull rod in described buffering slide 850
840 one end and described buffering connecting rod 700 are hinged, and the other end inserts described buffering slide 850, and described buffer pull rod 840 inserts
Part in described buffering slide 850 is arranged with some can slide and can drive buffering elastic by the most described buffer pull rod 840
The buffering gland 830 of spring 820 compression, the end of the other end of described buffer pull rod 840 is fixed with stopper 810.
Refering to Fig. 5, when needle roller bearing pin 420 is when entering the driving groove 510 of described sheave 500, and described buffering wheel 600 backs down
Described roller 710, roller 710 drives buffering connecting rod 700, and described buffering connecting rod 700 drives described buffer pull rod 840, is positioned at institute
State the stopper 810 on buffer pull rod 840 and promote buffering gland 830 adjacent thereto, buffering gland 830 extrude buffer spring
820 draw, and form resistance, reduce the angular velocity of sheave 500, to reach to reduce the purpose of sheave 500 impact.Refering to Fig. 6, when described
When needle roller bearing pin 420 enters into sheave 500 driving groove 510 the inside, roller 710 close to the summit of buffering wheel 600, then along with
From large to small, buffer spring 820 produces resistance and diminishes the diameter of the buffering wheel 600 that roller 710 is contacted, and promotes sheave 500
Angular velocity becomes larger, and has thus reached to reduce the purpose of sheave 500 impact.
Described sheave drive mechanism also includes a locking system, and locking system can coordinate convex Locking arc 430 and recessed locking
Locking effect between arc 520, the locking making sheave 500 is more firm, is beneficial to described needle roller bearing pin 420 and enters described smoothly
Driving groove 510.
Specifically, refering to Fig. 1, described locking system includes locking lever and locking elastic device 930, described locking thick stick
There is on bar the lock post that can embed described driving groove 510 and prevent sheave 500 from rotating.Described locking lever includes bow
910 and straight-bar 920, the junction of described bow 910 and described straight-bar 920 is rotatably connected in frame, described locking
Post is positioned on straight-bar 920, and described driver plate 400 is provided with can be by the fore-set 410 of described bow 910 jack-up.Described locking bullet
Property device 930 can select routine elastic construction for return straight-bar 920, the present embodiment preferably employs and described snubber elastomeric
The identical structure of device 800 is as locking elastic device 930.
Before described needle roller bearing pin 420 enters described driving groove 510, described fore-set 410 is by bow 910 jack-up, root
According to lever principle, straight-bar 920 drive lock post to leave driving groove 510, thus contact the lock post locking to sheave 500
Effect, in order to needle roller bearing pin 420 drives sheave 500 to rotate.After needle roller bearing pin 420 leaves described driving groove 510, described top
Post 410 departs from described bow 910, and now under the effect of described locking elastic device 930, lock post embeds again corresponding biography
Dynamic groove 510 carries out locking to described sheave 500.
As shown in Figure 1, Figure 2, shown in Fig. 5, Fig. 6, between described buffering wheel 600 and described output shaft, it is provided with inner sleeve, described inner sleeve
Be bolted on described sheave 500, described buffering wheel 600 be set in described in put, thus can increase buffering
Wheel 600 and the alignment of sheave 500, improve the Stability and veracity of buffering, also allows for the accurate assembling of buffering wheel 600.
As shown in Figure 4, the tumbler shaft 300 between described driven elliptic gear 200 and described driver plate 400 is provided with bearing,
Described bearing is connected with bearing cap, and described bearing cap is fixed in frame.Described driven elliptic gear 200 and described tumbler shaft
300 by bonded, and described driver plate 400 and described tumbler shaft 300 are by bonded.
In sum, the bielliptic(al) gear of present invention employing and buffering wheel 600 double buffering device, substantially reduce needle roller
Impact between bearing pin 420 and sheave 500, in the service life of extension device, equipment is the most steady, improves equipment
Environment during use.Parts are easy to manufacture installation, and overall structure volume is little.
It should be appreciated that the foregoing is only presently preferred embodiments of the present invention, it is not sufficient to limit the present invention's
Technical scheme, for those of ordinary skills, within the spirit and principles in the present invention, can add according to the above description
To increase and decrease, replace, convert or to improve, and all these increase and decrease, replace, convert or improve after technical scheme, all should belong to this
The protection domain of invention claims.
Claims (7)
1. a buffer-type sheave drive mechanism, it is characterised in that include for power input gear train, described gear train and
One end of one tumbler shaft is connected, and the other end of described tumbler shaft connects driver plate, and described driver plate has needle roller bearing pin and convex lock
Only arc, mechanism also includes sheave, and described sheave has the suitable driving groove of some and described needle roller bearing pin and some
The recessed Locking arc suitable with described convex Locking arc, described sheave and output shaft connect, and mechanism also includes reducing described
The buffer unit of impact between needle roller bearing pin and described sheave；
Described buffer unit includes the buffering wheel of one side that is coaxial with described sheave and that be connected in described sheave, described buffering wheel
Week is all identical with described driving groove quantity along having equally distributed recess and protuberance, described recess and the quantity of protuberance, described
Recess and described driving groove are correspondingly arranged, and described protuberance and described recessed Locking arc are correspondingly arranged；Described buffer unit also includes delaying
Rush connecting rod, described buffering connecting rod be provided with roller and can make roller and described buffering wheel against snubber elastomeric device；
Described sheave drive mechanism also includes that a locking system, described locking system include locking lever and locking elastic device,
On described locking lever, there is the lock post that can embed described driving groove and prevent sheave from rotating；
Described snubber elastomeric device includes buffer pull rod and buffering slide, is provided with buffer spring in described buffering slide, described slow
Rushing pull bar one end and described buffering connecting rod is hinged, the other end inserts described buffering slide, and described buffer pull rod inserts described slow
Rush the part in slide to be arranged with and some can slide and buffering that buffer spring can be driven to compress by the most described buffer pull rod
Gland, the end of the other end of described buffer pull rod is fixed with stopper.
Buffer-type sheave drive mechanism the most according to claim 1, it is characterised in that described buffer unit includes forming institute
Stating the active elliptic gear of gear train and driven elliptic gear, described active elliptic gear connects power shaft, described driven ellipse
Gear and described active elliptic gear are meshed and and the one end fits connection of described tumbler shaft.
Buffer-type sheave drive mechanism the most according to claim 2, it is characterised in that described active elliptic gear and described
Driven elliptic gear bias respectively is connected on described power shaft and described tumbler shaft, and junction is respectively positioned on corresponding oval length
On axle, one end farther out, the corresponding junction of distance and the major axis of described driven elliptic gear on the major axis of described active elliptic gear
Nearer one end, the corresponding junction of upper distance is meshed.
Buffer-type sheave drive mechanism the most according to claim 1, it is characterised in that described locking lever includes bow
And straight-bar, the junction of described bow and described straight-bar is rotatably connected in frame, and described lock post is positioned on straight-bar,
Described driver plate is provided with can be by the fore-set of described bow jack-up.
Buffer-type sheave drive mechanism the most according to claim 1, it is characterised in that described buffering wheel and described output shaft
Between be provided with inner sleeve, described inner sleeve is bolted on described sheave, described buffering wheel be set in described in put.
Buffer-type sheave drive mechanism the most according to claim 3, it is characterised in that described driven elliptic gear and described
Tumbler shaft between driver plate is provided with bearing, and described bearing is connected with bearing cap, and described bearing cap is fixed in frame.
Buffer-type sheave drive mechanism the most according to claim 3, it is characterised in that described driven elliptic gear and described
Tumbler shaft is by bonded, and described driver plate and described tumbler shaft are by bonded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310090874.6A CN103206504B (en) | 2013-03-21 | 2013-03-21 | A kind of buffer-type sheave drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310090874.6A CN103206504B (en) | 2013-03-21 | 2013-03-21 | A kind of buffer-type sheave drive mechanism |
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| Publication Number | Publication Date |
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| CN103206504A CN103206504A (en) | 2013-07-17 |
| CN103206504B true CN103206504B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310090874.6A Active CN103206504B (en) | 2013-03-21 | 2013-03-21 | A kind of buffer-type sheave drive mechanism |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107755571B (en) * | 2016-08-19 | 2024-05-14 | 北京机电研究所 | Lower ejection mechanism |
| CN109027086B (en) * | 2018-08-23 | 2020-10-27 | 安徽东普自动化设备有限公司 | Damping device of controller |
| CN109826920B (en) * | 2019-02-27 | 2021-06-25 | 长沙理工大学 | Design method of sheave mechanism with uniformly distributed grooves and non-uniformly distributed pins |
| CN111760855B (en) * | 2020-06-30 | 2021-09-24 | 三一汽车制造有限公司 | Conveying pipe dredging device and conveying pipe dredging system |
| CN111946786B (en) * | 2020-07-30 | 2022-08-09 | 广州华工环源绿色包装技术股份有限公司 | Sheave device provided with auxiliary braking mechanism |
| CN111975425A (en) * | 2020-08-21 | 2020-11-24 | 浙大城市学院 | High-stability rotary indexing mechanism for tool magazine |
| CN116044971B (en) * | 2023-04-03 | 2023-05-30 | 山西新德福自动化科技有限公司 | High-precision ball screw transmission device and assembly method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2240324A (en) * | 1939-04-21 | 1941-04-29 | Maurice A Yorkin | Glass forming machine |
| CN101319718B (en) * | 2008-07-03 | 2011-04-13 | 浙江工业大学 | Combined grooved pulley mechanism |
| CN202707978U (en) * | 2012-08-26 | 2013-01-30 | 温州名瑞机械有限公司 | External geneva mechanism |
| CN203223529U (en) * | 2013-03-21 | 2013-10-02 | 佛山华工祥源环保包装有限公司 | Buffer type grooved pulley transmission mechanism |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09210173A (en) * | 1996-01-30 | 1997-08-12 | Daishowa Seiki Co Ltd | Geneva gear |
| JP2010175056A (en) * | 2009-02-02 | 2010-08-12 | Alps Electric Co Ltd | Reduction gear |
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- 2013-03-21 CN CN201310090874.6A patent/CN103206504B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2240324A (en) * | 1939-04-21 | 1941-04-29 | Maurice A Yorkin | Glass forming machine |
| CN101319718B (en) * | 2008-07-03 | 2011-04-13 | 浙江工业大学 | Combined grooved pulley mechanism |
| CN202707978U (en) * | 2012-08-26 | 2013-01-30 | 温州名瑞机械有限公司 | External geneva mechanism |
| CN203223529U (en) * | 2013-03-21 | 2013-10-02 | 佛山华工祥源环保包装有限公司 | Buffer type grooved pulley transmission mechanism |
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| CN103206504A (en) | 2013-07-17 |
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