CN209115613U - Straight line micromotion mechanism - Google Patents
Straight line micromotion mechanism Download PDFInfo
- Publication number
- CN209115613U CN209115613U CN201821903373.XU CN201821903373U CN209115613U CN 209115613 U CN209115613 U CN 209115613U CN 201821903373 U CN201821903373 U CN 201821903373U CN 209115613 U CN209115613 U CN 209115613U
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- worm screw
- worm
- gear
- screw
- guide rail
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Abstract
The utility model discloses a kind of straight line micromotion mechanisms, including frame seat；Driving mechanism is installed on frame seat, for driving the first worm screw and the rotation of the second worm screw reverse sync；The worm couple being made of the first worm screw, the second worm screw and worm gear, the first worm screw and the second worm screw are set up separately in the two sides of worm gear, and are engaged with worm gear；Guide rail, the worm gear are rotatably installed on a middleware by shaft, and middleware is assemblied on the guide rail, and can be slided along guide rail；Wherein, the progressive error Δ between the axial pitch of the first worm screw and the axial gears of the second worm screw is less than or equal to back lash α, and the first worm screw moves worm gear along guide rail by its progressive error Δ with the second worm screw.The straight line micromotion mechanism of the utility model is not necessarily to multistage speed reducer, realizes micro-displacement using the tooth pitch official post worm gear of worm screw, executive item is installed on worm gear, can meet the requirement of executive item micro-displacement.
Description
Technical field
The utility model relates to a kind of straight line micromotion mechanisms.
Background technique
In some drive mechanisms for needing straight line microfeed, for example, executive item movement per minute need to be less than 0.5mm when,
It is often used variable speed electric motors, particularly and multistage speed reducer cooperates, the form for being reconfigured feed screw nut carries out microfeed.It adopts the structure,
Often requirement need to be can be only achieved through more than second level slowing down, machinery driving efficiency is low, and structure is big, and it is at high cost, also it is unfavorable for the small of mechanism
Typeization design.Using feed screw nut's structure, other than using deceleration device, also require between screw rod and nut through accurate small spiral shell
It away from transmission, makes troubles to processing, processing cost is also higher.
Utility model content
The technical problem to be solved by the utility model is to overcoming the deficiencies of the prior art and provide a kind of straight line micromover
Structure, to solve the problems, such as executive item minute movement.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is: a kind of straight line micromotion mechanism, including
Frame seat；
Driving mechanism is installed on frame seat, for driving the first worm screw and the rotation of the second worm screw reverse sync；
The worm couple being made of the first worm screw, the second worm screw and worm gear, the first worm screw and the second worm screw are set up separately
The two sides of worm gear, and engaged with worm gear；
Guide rail, the worm gear are rotatably installed on a middleware by shaft, and middleware is assemblied on the guide rail,
And it can be slided along guide rail；
Wherein, the progressive error Δ between the axial pitch of the first worm screw and the axial gears of the second worm screw is less than or equal to and nibbles
Gap α is closed, the first worm screw moves worm gear along guide rail by its progressive error Δ with the second worm screw.
Further, the driving mechanism includes
Motor is coaxially installed with motor gear on motor shaft；
First gear engaged with motor gear, first gear are connect with the first worm screw coaxial transmission；
Transition gear engaged with motor gear, transition gear are engaged with second gear, and second gear and the second worm screw are same
Axis transmission connection.
Further, the middleware includes transition plates and rolling slide block, and the shaft is axial screw, and the worm gear passes through
Axial screw is rotatably connected in transition plates, and transition plates is fixedly connected on rolling slide block, and the rolling slide block is sliding
It is dynamic to be mounted on the guide rail.
Further, the frame seat includes bottom plate, and the first support plate and the second support plate that are fixed on bottom plate, institute
The both ends for stating the first worm screw are mounted on the first support plate and the second support plate by bearing, and the both ends of second worm screw pass through
Bearing is mounted on the first support plate and the second support plate, the first worm screw and the second worm screw parallel arrangement.
After above-mentioned technical proposal, the utility model has the following beneficial effects:
The utility model drives the first worm screw and the second worm screw reverse sync to rotate by driving mechanism, the first worm screw and the
Two worm screws engage with worm gear, since there are small progressive error Δ, the first worm screws and between the first worm screw and the second worm screw
Two worm screws drive axial movement of the worm gear along worm screw during driving worm gear rotation, utilize the tooth pitch between two worm screws
Poor Δ makes worm gear realize micro-displacement.The straight line micromotion mechanism of the utility model is not necessarily to multistage speed reducer, utilizes the tooth pitch of worm screw
Official post worm gear realizes micro-displacement, and executive item is installed on worm gear, can meet the requirement of executive item micro-displacement.
Detailed description of the invention
Fig. 1 is the top view (broken section) of the straight line micromotion mechanism of the utility model；
Fig. 2 is the A-A cutaway view Amplified image of Fig. 1；
Fig. 3 is the B-B cutaway view Amplified image of Fig. 1；
Fig. 4 is the cooperation figure of first worm screw of the utility model, the second worm screw and worm gear.
Specific embodiment
In order to make the content of the utility model be easier to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail the utility model.
Unless not defining, the technical term or scientific term used herein is should be in the utility model fields
The ordinary meaning that personage with general technical ability is understood.Used in the utility model patent specification and claims
" first ", " second " and similar word are not offered as any sequence, quantity or importance, and are used only to distinguish different
Component part.Equally, the similar word such as "one" or " one " does not indicate that quantity limits yet, but indicates there is at least one
It is a.
As shown in Figures 1 to 4, a kind of straight line micromotion mechanism, including frame seat, driving mechanism, worm couple and guide rail.
Frame seat includes bottom plate 2, and fixed the first support plate 4 and the second support plate 7 on a base plate 2.The a pair of branch
Board 4,7 is for supporting the first worm screw 5 and the second worm screw 8.The both ends of first worm screw 5 are mounted on the first bearing by bearing
On plate 4 and the second support plate 7, the both ends of second worm screw 8 are mounted on the first support plate 4 and the second support plate 7 by bearing,
8 parallel arrangement of first worm screw 5 and the second worm screw.First worm screw 5 and the second worm screw 8 are rotatable.The present embodiment only gives machine
A kind of feasible configurations of stand, but not limited to this structure.
Driving mechanism is installed on frame seat, for driving the first worm screw 5 and the rotation of 8 reverse sync of the second worm screw.
The worm couple being made of the first worm screw 5, the second worm screw 8 and worm gear 6, the first worm screw 5 and the second worm screw 8 are divided
The two sides of worm gear 6 are located at, and are engaged with worm gear 6.First worm screw 5 and the rotation of 8 reverse sync of the second worm screw, drive worm gear jointly
6 rotations.
Guide rail 16, with being arranged in an axially parallel mode for two worm screws.The worm gear 6 is rotatably installed on a middleware by shaft
On, worm gear 6 the first worm screw 5, the second worm screw 8 drive under rotation around the shaft.Middleware is assemblied on the guide rail 16, and can
It is slided along guide rail 16.
Wherein, the progressive error Δ between the axial pitch of the first worm screw 5 and the axial gears of the second worm screw 8 is less than or equal to
Back lash α.Guarantee that the first worm screw 5 and the second worm screw 8 can engage with worm gear 6, it is common that worm gear 6 is driven to rotate, then, the
The axial pitch of one worm screw 5 cannot differ too big with the axial gears of the second worm screw 8.First worm screw 5 and the second worm screw 8 pass through it
Progressive error Δ moves worm gear 6 along guide rail 16.In the utility model, the progressive error Δ of two worm screws is less than or equal to back lash α,
It can guarantee that the first worm screw 5 can engage with the second worm screw 8 with worm gear 6, and its progressive error Δ utilized to push worm gear 6 along two worm screws
Axial movement.First worm screw 5 moves worm gear 6 along guide rail 16 by its progressive error Δ with the second worm screw 8.That is, snail
Wheel 6 actually rotates on one side, the axial movement due to progressive error and along worm screw on one side.
For example, in actual production, the axial pitch of the first worm screw is 6.28mm+0.09mm, the axial tooth of the second worm screw 8
Away from for 6.28mm+0.03mm, the back lash α of two worm and wheels 6 is 0.12mm, then the first worm screw 5 and the second worm screw 8
Progressive error Δ=0.06mm, when the first worm screw 5, the second worm screw 8 one circle of rotation, worm gear 6 is then along the first worm screw 5 and the second worm screw
8 axial direction (i.e. the direction of guide rail 16) moves 0.06mm.
For another example, in actual production, the axial pitch of the first worm screw 5 is 9.42mm+0.04mm, the axis of the second worm screw 8
It is 9.42mm-0.04mm to tooth pitch, the back lash α of two worm and wheels 6 is 0.16mm, then the first worm screw 5 and the second snail
Progressive error Δ=0.08mm of bar 8, when the first worm screw 5, the second worm screw 8 one circle of rotation, worm gear 6 is then along the first worm screw 5 and the
The axial direction (i.e. the direction of guide rail 16) of two worm screws 8 moves 0.08mm.It, then can be by adjusting the as the mobile direction of worm gear 6
One worm screw 5, the second worm screw 8 rotation direction be adjusted.
The working principle of the utility model is as follows:
The rotation of the synchronous backward of first worm screw 5 and the second worm screw 8, it is common that worm gear 6 is driven to rotate, such as in Fig. 4, the first snail
Bar 5 and the second worm screw 8 direction shown in arrow along Fig. 4, which synchronize, to be rotated backward, and worm gear 6 is driven to rotate clockwise.First snail
There are progressive error Δs between bar 5 and the second worm screw 8, when one circle of the first worm screw 5 and the rotation of 8 synchronous backward of the second worm screw, due to axis
To the minute differences of tooth pitch, then a mobile small distance, worm gear 6 move worm gear 6 under the drive of the biggish worm screw of axial pitch
Dynamic distance is equal to progressive error Δ.For example, the axial pitch of the first worm screw 5 is 6.28mm+0.09mm, the second worm screw 8 such as Fig. 4
Axial pitch be 6.28mm+0.03mm, then two worm screws, by one circle of the rotation of direction shown in arrow in Fig. 4, worm gear 6 moves right
0.06mm.Change the rotation direction of the first worm screw 5 and the second worm screw 8, then worm gear 6 is moved to the left 0.06mm.
The utility model drives the first worm screw 5 and 8 reverse sync of the second worm screw to rotate by driving mechanism, the first worm screw 5
It is engaged with worm gear 6 with the second worm screw 8, since there are small progressive error, the first snails between the first worm screw 5 and the second worm screw 8
Bar 5 and the second worm screw 8 drive worm gear 6 along the axial movement of worm screw during driving worm gear 6 to rotate, and utilize two snails
Tooth pitch official post worm gear 6 between bar realizes micro-displacement.The micromotion mechanism of the utility model is only needed without being superimposed multistage speed reducer
First class reducer is connected, micro-displacement is realized using the tooth pitch official post worm gear of worm screw, executive item is installed on worm gear 6, Ji Keman
The requirement of sufficient executive item micro-displacement.The utility model eliminates speed reducer, minimizes apparatus structure, utilizes the tooth of two worm screws
Micro movement is realized away from difference, and structure is simple, at low cost.
In the present embodiment, the driving mechanism includes motor 1, first gear 3, transition gear 11 and second gear 9.
Motor gear 10, motor gear 10 and motor shaft is coaxially installed on motor shaft to be rigidly connected by key.
The first gear 3 engaged with motor gear 10, first gear 3 are connect with 5 coaxial transmission of the first worm screw；First gear
3 and first worm screw 5 end pass through key be rigidly connected.
It is auxiliary to be also equipped with one between the first support plate 4 and the second support plate 7 for the transition gear 11 engaged with motor gear 10
Axis is helped, asessory shaft is for supporting transition gear 11.For 11 empty set of transition gear on the asessory shaft, transition gear 11 can be around the auxiliary
Axis is freely rotated.Transition gear 11 is engaged with second gear 9, and second gear 9 is connect with 8 coaxial transmission of the second worm screw, the second tooth
The end of wheel 9 and the second worm screw 8 is rigidly connected by key.Motor shaft drives first gear 3 and transition tooth by motor gear 10
Wheel 11, which synchronizes, to be rotate in same direction, and transition gear 11 drives second gear 9 to rotate again, makes first gear 3 and 9 synchronous backward of second gear
Rotation, then drive the synchronous backward of the first worm screw 5 and the second worm screw 8 to rotate by first gear 3 and second gear 9.
In the present embodiment, middleware includes transition plates 14 and rolling slide block 15, and the shaft is axial screw 13, the snail
Wheel 6 is rotatably connected in transition plates 14 by axial screw 13, and worm gear 6 is under the drive of the screw rod of two sides with axle position
Screw 13 is that center shaft is rotated.Transition plates 14 is fixedly connected on rolling slide block 15 by screw 12, and the rolling is slided
Block 15 is slidably mounted on the guide rail 16.Guide rail is fixed on a base plate 2 by screw 17.Transition plates 14 with guide rail 16 for matching
It closes, moves the worm gear being installed in transition plates 14 6 along guide rail 16, guide rail 16 play the guiding role to the movement of worm gear 6.
Worm gear 6 rotates the axial movement of an edge worm screw under the drive of the first worm screw 5 and the second worm screw 8 on one side, drives
Rolling slide block 15 makees small move horizontally along guide rail 16.The executive item (not shown) on worm gear 6 is installed on also with worm gear 6
Make minute movement.Cannot be excessive by the progressive error of the first worm screw 5 and the second worm screw 8, it otherwise will affect the engagement of worm and wheel,
So the adjusting of progressive error can be met by the tolerance of the first worm screw 5 of control and the second worm screw 8.
Particular embodiments described above, to the utility model solve the technical issues of, technical scheme and beneficial effects into
It has gone further description, it should be understood that the foregoing is merely specific embodiment of the utility model, and has not had to
In limitation the utility model, within the spirit and principle of the utility model, any modification, equivalent substitution and improvement done
Deng should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of straight line micromotion mechanism, it is characterised in that: including
Frame seat；
Driving mechanism is installed on frame seat, for driving the first worm screw (5) and the rotation of the second worm screw (8) reverse sync；
The worm couple being made of the first worm screw (5), the second worm screw (8) and worm gear (6), the first worm screw (5) and the second snail
Bar (8) sets up separately in the two sides of worm gear (6), and engages with worm gear (6)；
Guide rail (16), the worm gear (6) are rotatably installed on a middleware by shaft, and middleware is assemblied in the guide rail
(16) it on, and can be slided along guide rail (16)；
Wherein, the progressive error Δ between the axial pitch of the first worm screw (5) and the axial gears of the second worm screw (8) is less than or equal to
Back lash α, the first worm screw (5) keep worm gear (6) mobile along guide rail (16) with the second worm screw (8) by its progressive error Δ.
2. straight line micromotion mechanism according to claim 1, it is characterised in that: the driving mechanism includes
Motor (1) is coaxially installed with motor gear (10) on motor shaft；
The first gear (3) engaged with motor gear (10), first gear (3) are connect with the first worm screw (5) coaxial transmission；
The transition gear (11) engaged with motor gear (10), transition gear (11) are engaged with second gear (9), second gear
(9) it is connect with the second worm screw (8) coaxial transmission.
3. straight line micromotion mechanism according to claim 1, it is characterised in that: the middleware includes transition plates (14) and rolling
Movable slider (15), the shaft are axial screw (13), and the worm gear (6) is rotatably connected by axial screw (13)
On transition plates (14), transition plates (14) is fixedly connected on rolling slide block (15), and the rolling slide block (15) is slidably mounted on
On the guide rail (16).
4. straight line micromotion mechanism according to claim 1, it is characterised in that: the frame seat includes bottom plate (2), Yi Jigu
It is installed by bearing at the both ends of the first support plate (4) and the second support plate (7) being scheduled on bottom plate (2), first worm screw (5)
On the first support plate (4) and the second support plate (7), the both ends of second worm screw (8) are mounted on the first bearing by bearing
Plate (4) and the second support plate (7), the first worm screw (5) and the second worm screw (8) parallel arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821903373.XU CN209115613U (en) | 2018-11-19 | 2018-11-19 | Straight line micromotion mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821903373.XU CN209115613U (en) | 2018-11-19 | 2018-11-19 | Straight line micromotion mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209115613U true CN209115613U (en) | 2019-07-16 |
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ID=67205717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821903373.XU Active CN209115613U (en) | 2018-11-19 | 2018-11-19 | Straight line micromotion mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209115613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281991A (en) * | 2018-11-19 | 2019-01-29 | 常州机电职业技术学院 | Straight line micromotion mechanism |
-
2018
- 2018-11-19 CN CN201821903373.XU patent/CN209115613U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281991A (en) * | 2018-11-19 | 2019-01-29 | 常州机电职业技术学院 | Straight line micromotion mechanism |
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