CN209212909U - A kind of chain wheel rail and the accurate transmission mechanism with the chain wheel rail - Google Patents
A kind of chain wheel rail and the accurate transmission mechanism with the chain wheel rail Download PDFInfo
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- CN209212909U CN209212909U CN201822213837.0U CN201822213837U CN209212909U CN 209212909 U CN209212909 U CN 209212909U CN 201822213837 U CN201822213837 U CN 201822213837U CN 209212909 U CN209212909 U CN 209212909U
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- chain wheel
- cylindrical rolling
- wheel rail
- rolling assembly
- sprocket wheel
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Abstract
The utility model embodiment discloses a kind of chain wheel rail and the accurate transmission mechanism with the chain wheel rail, chain wheel rail includes at least one mounting base and multiple cylindrical rolling assemblies, mounting base is equipped with strip groove and multiple mounting holes, multiple mounting holes in same level height evenly and at intervals arrangement and multiple mounting holes with strip groove square crossing, cylindrical rolling assembly is located in mounting hole, is preset with the spacing matched for the gear teeth with sprocket wheel between adjacent two cylindrical rolling assemblies.Since cylindrical rolling assembly can rotate freely, ensure sprocket wheel and cylindrical rolling assembly in engagement process, the gear teeth of sprocket wheel enter freely and exit to be engaged with cylindrical rolling assembly, impact force and contact stress when reducing engagement, extend the service life of transmission device, meanwhile the periphery of the flank of tooth of engagement process middle sprocket and adjacent two cylindrical rolling assemblies is tangent always and close void-free contact, to realize the effect of precision drive.
Description
Technical field
The utility model embodiment is related to technical field of mechanical transmission, and in particular to a kind of chain wheel rail and has the sprocket wheel
The accurate transmission mechanism of track.
Background technique
Precise ball screw is widely used in various precision equipments such as lathe etc. at present, has high speed high in short distance
A variety of advantages such as smart high stability, however as the extension of shift length, the velocity of displacement of ball wire bar pair, lead precision all can
Reduce, manufacture difficulty, purchase cost constantly increases, and factory length is also limited, and is not suitable for the Linear transmission of long range, it is long at present away from
The method of main substitution ball wire bar pair from linear movement is exactly to use precision gear rack gear pair.
But rack-and-pinion is typically necessary and drives pinion gear rotation through speed reducer and realize straight line position driving motor
It moves, the planetary reducer speed ratio being widely used instantly is in 10 1 arcs of single-stage driving superfinishing level of confidentiality minimum back clearance below point, when need
Will more large speed ratio when planetary reducer will Multi-stage transmission, back clearance just constantly amplification, along between the engagement of rack-and-pinion
Gap, then being reacted to back clearance on linear axis will be bigger, this will directly reduce the performance and precision of the high precision apparatus such as lathe,
And if using Double-gear anti-backlash, that just needs mostly a set of motor acceleration and deceleration mechanism, cost is increased by one times；In addition rack-and-pinion
Gear inside secondary and planetary reducer is all sliding friction pair, causes the problem that transmission accuracy is low, service life is short.
Utility model content
For this purpose, the utility model embodiment provides a kind of chain wheel rail and the accurate transmission mechanism with the chain wheel rail,
With solve the problems, such as in the prior art due to back clearance it is big caused by instrument and equipment running precision reduce.
To achieve the goals above, the embodiments of the present invention provides the following technical solutions:
In the first aspect of the embodiments of the present invention, a kind of chain wheel rail, the chain wheel rail packet are provided
At least one mounting base and multiple cylindrical rolling assemblies are included, mounting base is equipped with strip groove and multiple groups installation cavity, multiple groups
Installation cavity arranges evenly and at intervals in same level height, and every group of installation cavity includes two and be symmetricly set on strip groove
The mounting hole of two sides, it is each cylinder rolling assembly one end protruded into out of strip groove side mounting hole and enter bar shaped it is recessed
In the mounting hole of the slot other side, it is preset between adjacent two cylindrical rolling assemblies and is matched for the gear teeth with sprocket wheel
Spacing.
Preferably, each cylindrical rolling assembly includes shaft and two bearings, two bearings are respectively fitted over
The both ends of shaft, the outer surface of two bearings are interference fitted with the inner wall of the mounting hole, the periphery of two neighboring shaft
It is respectively used to tangent with the flank of tooth gapless of sprocket wheel.
Preferably, the bearing is needle roller bearing without inner ring.
Preferably, the side of the mounting base is equipped with for preventing cylindrical rolling assembly from skidding off out of mounting hole
Baffle.
Preferably, the middle part of strip groove short transverse is arranged in the mounting hole.
In the second aspect of the embodiments of the present invention, a kind of accurate transmission mechanism, the accurate biography are provided
Dynamic device includes slide, leads straight rail, driving motor, worm type of reduction gearing, sprocket wheel and chain wheel rail described above, slide and set
It sets on leading straight rail, driving motor and worm type of reduction gearing are separately positioned on slide, and the power of worm type of reduction gearing is defeated
Enter the revolution axis connection of axis and driving motor, chain wheel case is on the power output shaft of worm type of reduction gearing and consubstantiality rotates, chain
The gear teeth of wheel protrude between the cylindrical rolling assembly of adjacent two and drive the cylindrical rolling assembly rotation of adjacent two.
Preferably, the worm type of reduction gearing is double lead anti-backlash worm wheel worm reducers.
The utility model embodiment has the advantages that
Since shaft can rotate freely, it is ensured that sprocket wheel and shaft in engagement process, the gear teeth of sprocket wheel freely into
Enter and exit and engaged with two neighboring shaft, impact force and contact stress when reducing engagement extend transmission device use
The effect in service life, meanwhile, the periphery of the flank of tooth of engagement process middle sprocket and adjacent two shaft is tangent always and close tight
Contact, to realize the effect of precision drive.In addition, accurate transmission mechanism due to using worm type of reduction gearing be driven, when
When driving motor turns to the stroke of setting, worm type of reduction gearing is with i.e. by the engagement shape of the gear teeth of sprocket wheel and adjacent two shaft
State is fixed, and pinpoint effect is realized.
Detailed description of the invention
It, below will be to reality in order to illustrate more clearly of the embodiments of the present invention or technical solution in the prior art
It applies mode or attached drawing needed to be used in the description of the prior art is briefly described.It should be evident that attached in being described below
Figure is only exemplary, for those of ordinary skill in the art, without creative efforts, can be with
It is extended according to the attached drawing of offer and obtains other implementation attached drawings.
Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for
Those skilled in the art understands and reads, and is not intended to limit the utility model enforceable qualifications, therefore does not have technology
On essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the utility model institute energy
Under the effect of generation and the purpose that can reach, it should all still fall in the revealed technology contents of the utility model and obtain the model that can cover
In enclosing.
Fig. 1 is a kind of overlooking structure diagram for chain wheel rail that an embodiment of the utility model provides；
Fig. 2 is a kind of side structure schematic view for chain wheel rail that an embodiment of the utility model provides；
Fig. 3 is a kind of positive structure diagram of the one end for chain wheel rail that an embodiment of the utility model provides；
Fig. 4 is a kind of side structure schematic view for accurate transmission mechanism that another embodiment of the utility model provides；
Fig. 5 is the enlarged structure schematic diagram in the section portion of Fig. 4；
In figure: 1- mounting base, 11- strip groove, 12- baffle；2- cylinder rolling assembly, 21- shaft, 22- bearing；3-
Slide；4- leads straight rail；5- driving motor；6- worm type of reduction gearing；7- sprocket wheel.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily, it is clear that described embodiment is
The utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the utility model protection
Range.
The term on cited such as "upper", "lower", " left side ", the right side in this specification ", " centre ", is merely convenient to describe
Be illustrated, rather than to limit the enforceable range of the utility model, relativeness is altered or modified, without substantive change
Under technology contents, when being also considered as the enforceable scope of the utility model.
Embodiment 1
As shown in Figure 1 to Figure 3, a kind of chain wheel rail provided for the present embodiment 1, the chain wheel rail includes mounting base 1
With multiple cylindrical rolling assemblies 2, mounting base 1 is equipped with strip groove 11 and multiple groups installation cavity, and strip groove 11 is bar shaped
Through slot, multiple groups installation cavity arrange evenly and at intervals in same level height, and every group of installation cavity includes two and be symmetrical arranged
The middle part of 11 short transverse of strip groove, two adjacent cylinders are arranged in mounting hole in 11 two sides of strip groove, mounting hole
Spacing between shape rolling assembly 2 is equal to the pitch circle between cog arc length of sprocket wheel, and one end of each cylinder rolling assembly 2 is recessed from bar shaped
It protrudes into and enters in the mounting hole of 11 other side of strip groove in the mounting hole of 11 side of slot.Each cylindrical rolling assembly
2 include shaft 21 and two bearings 22, and two bearings 22 are respectively fitted over the both ends of shaft 21, the outer surface of two bearings 22 and
The inner wall of the mounting hole is interference fitted, and the periphery of two neighboring shaft 21 is respectively used to the flank of tooth gapless phase with sprocket wheel
It cuts.
Preferably, the bearing 22 is needle roller bearing without inner ring.Needle bearing long roller equipped with thin, therefore radial junction
Structure is compact, and when internal diameter and load-carrying ability identical as other types of bearings, minimum outer diameter is to adapt to shaft 21 and sprocket wheel
Cooperation.
Preferably, the side of the mounting base 1 is equipped with the gear for preventing cylindrical rolling assembly 2 from skidding off out of mounting hole
Piece 12.Baffle 12 is fixed by screws in the side of mounting base 1.
Preferably, the middle part of 11 short transverse of strip groove is arranged in the mounting hole.
Since shaft can rotate freely, it is ensured that sprocket wheel and shaft in engagement process, the gear teeth of sprocket wheel freely into
Enter and exit and engaged with two neighboring shaft, impact force and contact stress when reducing engagement extend transmission device use
The effect in service life, meanwhile, the periphery of the flank of tooth of engagement process middle sprocket and adjacent two shaft is tangent always and close tight
Contact, to realize the effect of precision drive.
Embodiment 2
As shown in Figure 4 and Figure 5, on the basis of the chain wheel rail of embodiment 1, the utility model embodiment 2 provides one kind
Accurate transmission mechanism, the accurate transmission mechanism include slide 3, lead straight rail 4, driving motor 5, worm type of reduction gearing 6, sprocket wheel
7 and embodiment 1 described in chain wheel rail.Slide 3 is arranged on leading straight rail 4, and the top of slide 3 is capable of fixing various accurate instrument
Device, driving motor 5 and worm type of reduction gearing 6 are separately positioned on slide 3, and worm type of reduction gearing 6 is that double leads disappear gap snail
Worm and gear retarder, the power input shaft of worm type of reduction gearing 6 and the revolution axis connection of driving motor 5,7 sets of sprocket wheel in worm gear
On the power output shaft of worm reducer 6 and androgynous rotation, the gear teeth of sprocket wheel 7 protrude into the cylindrical rolling assembly 2 of adjacent two
Between and drive adjacent two cylindrical rolling assemblies 2 to rotate, chain wheel rail in the present embodiment, if there are two mounting bases
1 is docking together, it is of course possible to accordingly be arranged to the length needed according to actual needs.
Worm type of reduction gearing 6 has the function of positioning, when driving motor 5 turns to the stroke of setting, worm and gear
Retarder 6 is realized with the meshing state of sprocket wheel 7 and shaft 21 is fixed to the pinpoint effect of slide 3.The present embodiment
In accurate transmission mechanism can apply on various precision finishing machines or instrument.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (7)
1. a kind of chain wheel rail, which is characterized in that the chain wheel rail includes at least one mounting base (1) and multiple cylindrical rollings
Dynamic component (2), mounting base (1) are equipped with strip groove (11) and multiple groups installation cavity, and multiple groups installation cavity is in same level height
It is arranged evenly and at intervals on degree, every group of installation cavity includes two mounting holes for being symmetricly set on strip groove (11) two sides, often
One end of a cylinder rolling assembly (2) is protruded into out of strip groove (11) side mounting hole and enters strip groove (11) separately
In the mounting hole of side, it is preset between adjacent two cylindrical rolling assemblies (2) and is matched for the gear teeth with sprocket wheel
Spacing.
2. a kind of chain wheel rail according to claim 1, which is characterized in that each cylindrical rolling assembly (2) is wrapped
Include shaft (21) and two bearings (22), two bearings (22) are respectively fitted over the both ends of shaft (21), two bearings (22) it is outer
Surface is interference fitted with the inner wall of the mounting hole, and the periphery of two neighboring shaft (21) is respectively used to the flank of tooth with sprocket wheel
Gapless is tangent.
3. a kind of chain wheel rail according to claim 2, which is characterized in that the bearing (22) is no inner ring needle roller axis
It holds.
4. a kind of chain wheel rail according to claim 1, which is characterized in that the side of the mounting base (1) is equipped with and is used for
The baffle (12) for preventing cylindrical rolling assembly (2) from skidding off out of mounting hole.
5. a kind of chain wheel rail according to claim 1, which is characterized in that the mounting hole is arranged in strip groove (11)
The middle part of short transverse.
6. a kind of accurate transmission mechanism, which is characterized in that the accurate transmission mechanism includes slide (3), leads straight rail (4), driving
Motor (5), worm type of reduction gearing (6), sprocket wheel (7) and chain wheel rail of any of claims 1-5, slide (3)
It is arranged on leading straight rail (4), driving motor (5) and worm type of reduction gearing (6) are separately positioned on slide (3), worm and gear
The power input shaft of retarder (6) and the revolution axis connection of driving motor (5), sprocket wheel (7) are covered in worm type of reduction gearing (6)
On power output shaft and androgynous rotation, the gear teeth of sprocket wheel (7) are protruded between the cylindrical rolling assembly (2) of adjacent two and are driven
The cylindrical rolling assembly (2) of adjacent two rotates.
7. a kind of accurate transmission mechanism according to claim 6, which is characterized in that the worm type of reduction gearing (6) is
Double lead anti-backlash worm wheel worm reducers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822213837.0U CN209212909U (en) | 2018-12-26 | 2018-12-26 | A kind of chain wheel rail and the accurate transmission mechanism with the chain wheel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822213837.0U CN209212909U (en) | 2018-12-26 | 2018-12-26 | A kind of chain wheel rail and the accurate transmission mechanism with the chain wheel rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209212909U true CN209212909U (en) | 2019-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822213837.0U Active CN209212909U (en) | 2018-12-26 | 2018-12-26 | A kind of chain wheel rail and the accurate transmission mechanism with the chain wheel rail |
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| Country | Link |
|---|---|
| CN (1) | CN209212909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112373744A (en) * | 2020-11-27 | 2021-02-19 | 颍上县皖润米业有限公司 | Rice unloader with prevent blockking up structure |
-
2018
- 2018-12-26 CN CN201822213837.0U patent/CN209212909U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112373744A (en) * | 2020-11-27 | 2021-02-19 | 颍上县皖润米业有限公司 | Rice unloader with prevent blockking up structure |
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