CN206092922U - Screw thread clearance remove device - Google Patents
Screw thread clearance remove device Download PDFInfo
- Publication number
- CN206092922U CN206092922U CN201620924874.0U CN201620924874U CN206092922U CN 206092922 U CN206092922 U CN 206092922U CN 201620924874 U CN201620924874 U CN 201620924874U CN 206092922 U CN206092922 U CN 206092922U
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- CN
- China
- Prior art keywords
- nut
- disc spring
- end cap
- casing
- endoporus
- Prior art date
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Abstract
The utility model discloses a screw thread clearance remove device, it includes transmission lead screw, mother nut, auxiliary nut, connecting pin, dish spring round pin, dish spring, box, end cover, the end cover passes through the fastener to be fixed on the box, the transmission lead screw passes from the centre bore of box and end cover, be provided with mother nut and auxiliary nut between the hole of box and transmission lead screw radial, mother nut and auxiliary nut through interior screw -thread fit on the external screw thread of transmission lead screw, hole with the box has certain clearance simultaneously, auxiliary nut sets up the upper portion at the mother nut, there is certain clearance in both, the end cover is connected to the connecting pin, auxiliary nut and mother nut, the sub -unit connection of dish spring round pin is on auxiliary nut, its upper portion is in in the hole of end cover, its outside cover has the dish spring, it is gapped between the hole of dish spring and end cover. The utility model discloses can eliminate the screw thread clearance convenient and reliablely. And simultaneously, the utility model discloses screw thread clearance remove device simple structure, simple to operate.
Description
Technical field
This utility model is related to a kind of device for eliminating thread clearance, eliminates more particularly, to milling train pull rod screw gap and fills
Put.
Background technology
Worm drive are commonly used in the plant equipment of every profession and trade, as thread transmission can all be present necessarily greatly
Little gap, and the presence in this gap influences whether precision and the use of whole equipment, so in high precision apparatus often
Require by other corresponding mechanisms to eliminate thread pitch.
It is existing some eliminate mechanism's often complex structure of thread pitches, comprising compared with multiple component, cost is high, installs fiber crops
It is tired, increased the cost of equipment.
Utility model content
Problem to be solved in the utility model is to provide a kind of device for eliminating thread clearance, and which easily and reliably can disappear
Except thread pitch.Meanwhile, it is this utility model device for eliminating thread clearance simple structure, easy for installation.
A kind of device for eliminating thread clearance of this utility model, it includes drive lead screw, mother nut, secondary nut, connecting pin, dish
Spring pin, disc spring, casing, end cap；End cap is fixed on above casing by securing member, and drive lead screw is from casing and the center of end cap
Pass through in hole, mother nut and secondary nut, mother nut and secondary nut are provided between the radial direction of the endoporus and drive lead screw of casing
By screw-internal thread fit on the external screw thread of drive lead screw, while having certain gap with the endoporus of casing, secondary nut is arranged on
The top of mother nut, there is certain gap, connecting pin connection end cap, secondary nut and mother nut, the bottom company of disc spring pin in both
It is connected on secondary nut, its top is in the endoporus of end cap, between being cased with having between the endoporus of disc spring, disc spring and end cap outside which
Gap.
In this utility model device, it is external screw thread on drive lead screw, the inside of casing has for installing mother nut, secondary nut
Hole, there are several screwed holes the upper surface of casing for connecting end cap.Mother nut, secondary nut are arranged on casing by end cap
In, drive casing integrally to move up and down by rotating drive lead screw.
Further, the inner hole of the external diameter of end cap lower convex platform and casing top, its shaft shoulder are connect with the upper surface of casing
Touch.
Further, the endoporus on the lower surface of end cap is several ladder blind holes, and the depth of its macropore is according to disc spring
Working depth is determined, the aperture of its macropore is slightly less than this slightly larger than the external diameter of the external diameter and connecting pin top enlarged diameter section of disc spring
The aperture of macropore.
Further, multiple through holes are provided with secondary nut, respectively for installing the mating holes of connecting pin and for pacifying
The screwed hole of dress disc spring pin.
Further, multiple blind holes are provided with mother nut, are the mating holes for installing connecting pin.
Further, external diameter of the external diameter of connecting pin top enlarged diameter section less than big hole section in the endoporus of end cap lower surface, long
Height of the degree less than big hole section in the endoporus of end cap lower surface.
Further, disc spring is cased with outside the Upper cylindrical section of disc spring pin, its diameter is slightly less than the internal diameter of disc spring, and length is more than
The free height of disc spring, the bottom of disc spring pin are coordinated with the screwed hole on secondary nut.
Further, thread pitch adjusting apparatus also include ball ring, and ball ring is enclosed within outside drive lead screw, with drive lead screw
There is certain gap, its lower plane is contacted with the inner face of casing endoporus, it is recessed below the convex spherical above which and mother nut
Sphere is engaged.
The chi of top enlarged diameter section when macropore size wherein, in disc spring, the ladder blind hole on end cap lower surface, connecting pin
The design sequence of very little three is：A. disc spring size is determined according to stress and topology requirement；B. according to the disc spring size design selected
The size of big hole section in the endoporus of end cap lower surface；C. according to the size of big hole section in the endoporus of end cap lower surface designing on connecting pin
The size of portion's enlarged diameter section.
Drive lead screw in this utility model device for eliminating thread clearance is fixed up and down, therefore can not be moved up and down, can only
Rotate.It is (big that this utility model device for eliminating thread clearance reserves certain gap in assembling, between mother nut and secondary nut
In the gap of motion thread), when then tighten end cap toward on casing, disc spring is compressed at leisure, case lid and secondary nut it
Between produce elastic force, as drive lead screw has been fixed up and down, secondary nut will not be subjected to displacement, so elastic force can be by case lid, case
Body and the parts (including mother nut and ball ring etc.) being connected with casing are up moved, so as to eliminate drive lead screw and master
Thread pitch between nut.
So in the course of the work, when whole box part bears load upwards, due to whole box part
" being lifted ", in-house no thread pitch, so shaking phenomenon will not be produced, improve the precision of equipment, extend phase
Close the life-span of parts.
Therefore, this utility model device for eliminating thread clearance can easily and reliably eliminate thread pitch.Meanwhile, this practicality
It is Novel threaded gap eliminator simple structure, easy for installation.
Description of the drawings
Fig. 1 is the cross-sectional schematic of this utility model device for eliminating thread clearance.
Specific embodiment
Further detailed description is done to this utility model with reference to specification drawings and specific embodiments.
Embodiment 1
As shown in figure 1, a kind of device for eliminating thread clearance of this utility model, it includes drive lead screw 6, mother nut 4, secondary spiral shell
Female 3, connecting pin 8, disc spring pin 1, disc spring 2, casing 7, end cap 9；End cap 9 is fixed on above casing 7 by securing member, driving wire
Bar 6 is passed through from the centre bore of casing 7 and end cap 9, between the radial direction of the endoporus and drive lead screw 6 of casing 7 is provided with main spiral shell
Female 4 and secondary nut 3, mother nut 4 and secondary nut 3 by screw-internal thread fit on the external screw thread of drive lead screw 6, while with casing 7
Endoporus have certain gap, secondary nut 3 is arranged on the top of mother nut 4, and both have certain gap, and connecting pin 8 connects
End cap 9, secondary nut 3 and mother nut 4, the bottom of disc spring pin 1 are connected on secondary nut 4, and its top is in the endoporus of end cap 9,
It is cased with having gap between the endoporus of disc spring 2, disc spring 2 and end cap 9 outside which.
Embodiment 2
In above-described embodiment, the inner hole at the top of the external diameter and casing 7 of 9 lower convex platform of end cap, its shaft shoulder are upper with casing 7
End contact.
Embodiment 3
Endoporus on the lower surface of end cap 9 is several ladder blind holes, the working depth of the depth of its macropore according to disc spring 2
Determine, the aperture of its macropore is slightly less than the macropore slightly larger than the external diameter of the external diameter and 8 top enlarged diameter section of connecting pin of disc spring 2
Aperture.
It is determined that during macropore size in ladder blind hole on 9 lower surface of end cap, its design sequence is：A. according to stress and
Topology requirement determines 2 size of disc spring；B. the size of big hole section in 2 size design end cap of disc spring, the 9 lower surface endoporus that basis is selected；
C. according to the size of big hole section in 9 lower surface endoporus of end cap designing the size of 8 top enlarged diameter section of connecting pin.
Embodiment 4
It is provided with multiple through holes on secondary nut 3, respectively for installing the mating holes of connecting pin 8 and for installing disc spring pin
1 screwed hole.
Embodiment 5
Multiple blind holes are provided with mother nut 4, are the mating holes for installing connecting pin 8.
Embodiment 6
External diameter of the external diameter of 8 top enlarged diameter section of connecting pin less than big hole section in 9 lower surface endoporus of end cap, length is less than end
The height of big hole section in 9 lower surface endoporus of lid.
Embodiment 7
Disc spring 2 is cased with outside the Upper cylindrical section of disc spring pin 1, its diameter is slightly less than the internal diameter of disc spring 2, length is more than disc spring 2
Free height, the bottom of disc spring pin 1 is coordinated with the screwed hole on secondary nut 3.
Top enlarged diameter section when macropore size wherein, in disc spring 2, the ladder blind hole on 9 lower surface of end cap, connecting pin 8
The design sequence of size three be：A. 2 size of disc spring is determined according to stress and topology requirement；B. according to 2 chi of disc spring selected
The size of big hole section in very little design 9 lower surface endoporus of end cap；C. according to the size of big hole section in 9 lower surface endoporus of end cap designing
The size of 8 top enlarged diameter section of connecting pin.
In above-described embodiment, when drive lead screw 6 is rotated, mother nut 4 and secondary nut 3 are due to being in above connecting pin 8
In the blind hole of 9 lower surface of case lid, and case lid 9 has been fixedly connected on casing 7, so will not rotate；Disc spring 1 is preferably
It is symmetrical arranged, it ensure that whole device equably can have been moved upwards, without producing high situation low on one side, so as to
Thread pitch is eliminated equably.Simultaneously as at work, secondary nut 3 is solely subjected to the elastic force of disc spring 2, and mother nut 4 will then bear
Bigger service load, so secondary nut 3 is relatively thin, mother nut 4 is thicker.
Embodiment 8
Thread pitch adjusting apparatus also include ball ring 5, and ball ring 5 is enclosed within outside drive lead screw 6, is existed with drive lead screw 6
Certain gap, its lower plane are contacted with the inner face of 7 endoporus of casing, the recessed ball below the convex spherical above which and mother nut 4
Face is engaged.In this utility model sphere connection effect be：Whole box part plays flexible connection when by shock loading
Effect, it is allowed to occur between mother nut and ball ring in any direction it is a certain degree of tumble, pull bar and equipment are integrally risen
To protective effect.
The assembly method of this utility model device for eliminating thread clearance is：First, loading ball ring 5 and main spiral shell in casing 7
After female 4, revolute nut 3 is until which touches mother nut 4, then secondary nut 3 is back rotated a certain angle to theoretical position
Near (being judged by the distance of the upper surface of the secondary nut 3 of measurement to casing 7 and the contact surface of case lid 9), i.e., in 4 He of mother nut
Certain gap is reserved between secondary nut 3 (more than the gap of motion thread)；2nd, the connection being aligned on mother nut 4 and secondary nut 3
Pin mating holes, connecting pin 8 is loaded in secondary nut 3 and mother nut 4 from 3 upper surface of secondary nut (ensure mother nut and secondary nut it
Between will not rotate)；Meanwhile, disc spring pin 1 is arranged in the screwed hole of secondary nut 3, and prescribed form is pressed on disc spring pin 1
Put disc spring 2；3rd, after all of connecting pin 8, disc spring pin 1 and disc spring 2 are put in the blind hole of 9 lower surface of end cap, by end
Lid 9 is arranged on casing 7, and is fastened by securing member.So, when drive lead screw 6 is rotated, secondary nut 3 and mother nut 4 due to
Above connecting pin 8 in the hole of 9 lower surface of case lid, it is ensured that mother nut 4 and secondary nut 3 will not rotate.
Drive lead screw in this utility model device for eliminating thread clearance is fixed about 6, therefore can not be moved up and down, can only
Rotate.This utility model device for eliminating thread clearance reserves certain gap (big in assembling between mother nut 4 and secondary nut 3
In the gap of motion thread), during the process that then end cap 9 is installed toward on casing 7, disc spring 2 is slowly compressed, in 9 He of case lid
Elastic force is produced between secondary nut 3.As drive lead screw is fixed about 6, meanwhile, secondary nut 3 under Gravitative Loads, with biography
Downward gap between dynamic screw mandrel 6 is eliminated, therefore, secondary nut 3 will not be subjected to displacement, so elastic force can be by case lid 9, casing
7 and the parts (include mother nut 4, ball ring 5 etc.) that are connected with casing up move, so as to eliminate 6 He of drive lead screw
Thread pitch between mother nut 4.Therefore this device in equipment running process will not produce shaking phenomenon, improve equipment
Precision, extend the life-span of related components.
More than, preferred embodiment only of the present utility model, but protection domain of the present utility model is not limited thereto, and appoints
What those familiar with the art the change that can readily occur in or is replaced in the technical scope that this utility model is disclosed
Change, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with claim
The protection domain for being defined is defined.
Claims (8)
1. a kind of device for eliminating thread clearance, is characterized in that：It includes drive lead screw (6), mother nut (4), secondary nut (3), company
Pin (8), disc spring pin (1), disc spring (2), casing (7), end cap (9)；End cap (9) is fixed on the upper of casing (7) by securing member
Face, drive lead screw (6) are passed through from the centre bore of casing (7) and end cap (9), in endoporus and the drive lead screw (6) of casing (7)
It is provided with mother nut (4) and secondary nut (3) between radially, mother nut (4) and pair nut (3) are by screw-internal thread fit in driving wire
On the external screw thread of bar (6), while having certain gap with the endoporus of casing (7), secondary nut (3) is arranged on the upper of mother nut (4)
Portion, there is certain gap, connecting pin (8) connection end cap (9), secondary nut (3) and mother nut (4), under disc spring pin (1) in both
Portion is connected on secondary nut (4), and its top is in the endoporus of end cap (9), and disc spring (2), disc spring (2) and end cap are cased with outside which
(9) there is gap between endoporus.
2. device for eliminating thread clearance according to claim 1, is characterized in that：The external diameter and casing of end cap (9) lower convex platform
(7) inner hole at the top of, its shaft shoulder are contacted with the upper surface of casing (7).
3. device for eliminating thread clearance according to claim 1, is characterized in that：Endoporus on the lower surface of end cap (9) is
Several ladder blind holes, the depth of its macropore are slightly larger than disc spring according to the aperture of the decision of the working depth of disc spring (2), its macropore
(2) external diameter and the external diameter of connecting pin (8) top enlarged diameter section is slightly less than the aperture of the macropore.
4. device for eliminating thread clearance according to claim 1, is characterized in that：Multiple through holes are provided with secondary nut (3),
Respectively it is used for the mating holes of connecting pin (8) and the screwed hole for installing disc spring pin (1) are installed.
5. device for eliminating thread clearance according to claim 1, is characterized in that：Mother nut is provided with multiple blind holes on (4),
It is the mating holes for installing connecting pin (8).
6., according to the arbitrary described device for eliminating thread clearance of claim 3-5, it is characterized in that：Connecting pin (8) top major diameter
External diameter of the external diameter of section less than big hole section in the endoporus of end cap (9) lower surface, length is less than big hole section in the endoporus of end cap (9) lower surface
Height.
7., according to the arbitrary described device for eliminating thread clearance of claim 3-5, it is characterized in that：The Upper cylindrical of disc spring pin (1)
Section is outer to be cased with disc spring (2), and its diameter is slightly less than the internal diameter of disc spring (2), free height of the length more than disc spring (2), disc spring pin (1)
Bottom coordinate with the screwed hole on secondary nut (3).
8. device for eliminating thread clearance according to claim 1, is characterized in that：Thread pitch adjusting apparatus also include ball ring
(5), ball ring (5) is enclosed within drive lead screw (6) outward, there is certain gap with drive lead screw (6), its lower plane and casing (7)
The inner face contact of endoporus, concave spherical surface of the convex spherical above which with mother nut (4) below are engaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620924874.0U CN206092922U (en) | 2016-08-24 | 2016-08-24 | Screw thread clearance remove device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620924874.0U CN206092922U (en) | 2016-08-24 | 2016-08-24 | Screw thread clearance remove device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206092922U true CN206092922U (en) | 2017-04-12 |
Family
ID=58468930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620924874.0U Active CN206092922U (en) | 2016-08-24 | 2016-08-24 | Screw thread clearance remove device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206092922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090197A (en) * | 2016-08-24 | 2016-11-09 | 中冶华天南京工程技术有限公司 | A kind of device for eliminating thread clearance and assembly method thereof |
-
2016
- 2016-08-24 CN CN201620924874.0U patent/CN206092922U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090197A (en) * | 2016-08-24 | 2016-11-09 | 中冶华天南京工程技术有限公司 | A kind of device for eliminating thread clearance and assembly method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |