CN206860768U - The adjustable worm type of reduction gearing of backlass - Google Patents
The adjustable worm type of reduction gearing of backlass Download PDFInfo
- Publication number
- CN206860768U CN206860768U CN201720709393.2U CN201720709393U CN206860768U CN 206860768 U CN206860768 U CN 206860768U CN 201720709393 U CN201720709393 U CN 201720709393U CN 206860768 U CN206860768 U CN 206860768U
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- CN
- China
- Prior art keywords
- worm
- backlass
- wheel shaft
- adjustable
- reduction gearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of adjustable worm type of reduction gearing of backlass, including casing, worm screw, worm gear and worm-wheel shaft are set in casing, worm gear is circumferentially fixed on worm-wheel shaft and worm engaging, the worm gear can move back and forth vertically, and equipped with the adjusting means for being used to adjust worm gear axial location.The utility model reduces backlash by adjusting the axial location of worm gear, its essence is a part of meshing performance for sacrificing worm and gear to reduce backlash, to reach the purpose of regulation Worm Wheel System backlass, there is the characteristics of simple and compact for structure, easy to adjust.
Description
Technical field
It the utility model is related to machining, mechanical equipment technical field, and in particular to adjustable to a kind of backlass
Worm type of reduction gearing.
Background technology
Worm and gear is a kind of common kind of drive in machine driving, and worm and wheel is intermeshed, worm screw active,
Worm gear is driven, has the advantages that big gearratio, stable drive, has self-locking performance, be applied to transmit the revolution between alternating axis more
Motion.
Due to manufacturing and fixing error, worm gear and worm screw can produce backlash in engagement.Appropriate backlash is
Necessary, it can avoid tooth force deformation and the extruding or the stuck phenomenon that rub caused by heat expansion, can mend to a certain extent
Manufacture and rigging error are repaid, the space for accommodating lubricating oil is may also provide, is easy to lubrication of tooth surface.But when the rotation direction of worm screw changes
When, the presence of backlash, it just result in the generation of backlass so that the counter motion of worm screw can not be immediately passed to snail
Wheel, could only drive worm gear wheel after worm screw turns over certain angle, and this has resulted in mechanically operated error and delay,
Also bring shock and vibration and noise simultaneously.This reverse drive error is for based on passing power caused by backlash
Transmission occasion there is no a too much influence, but to transmit the precision drive based on motion（The for example cutter of lathe, workpiece feeding
Motion）In, the precision of whole equipment can be substantially reduced.
At present, high-precision Worm and worm-wheel gearing, all application have the technological means for eliminating or adjusting backlass, lead to
For often, including following several method：First, manufacture and the installation accuracy of worm and gear are improved, but the raising of this precision is that have
Limit, very high is required to the technical merit of worker, and worm and gear operation, can still be produced reversely after the break-in long period between
Gap, regulating power are poor；Second, carrying out radial direction adjustment to worm gear or worm screw using adjust pad, distance between worm gear and worm screw is realized
Regulation, but which needs to increase special worm gear or worm screw bracket, and its is complicated, profile is too fat to move, and adjusts also not
It is convenient；Third, use double pitch worm or twin worm, the backlash of which can tune to 0.01 ~ 0.015mm, precision is high,
It is easy to adjust, but its cost is high, uses on machine tool and wastes very much.
Utility model content
Between overcoming the shortcomings of that existing worm and gear backlass adjusting means, the utility model provide one kind reversely
The adjustable worm type of reduction gearing of gap.
The technical solution adopted in the utility model is as follows：
A kind of adjustable worm type of reduction gearing of backlass, including casing, worm screw, worm gear and worm-wheel shaft are set in casing,
Worm gear is circumferentially fixed can be moved back and forth vertically on worm-wheel shaft with worm engaging, the worm gear, and equipped with for adjusting worm gear
The adjusting means of axial location.
The worm gear and worm-wheel shaft axial restraint, the worm-wheel shaft can move back and forth vertically, and the adjusting means is used for
Adjust the axial location of worm-wheel shaft.
The worm-wheel shaft include set gradually No.1 thread segment, No.1 construction section, worm gear section, No. two construction sections, No. two
Thread segment and deferent segment；The No.1 construction section, No. two construction sections are separately mounted in the mounting hole of box bilateral wall, and can made
Move axially and rotate in a circumferential direction, the No.1 construction section, worm gear section and the overall length of No. two construction sections are less than box bilateral wall appearance
Spacing between face；Adjusting nut, the adjusting nut and casing two are mounted on the No.1 thread segment, No. two thread segments
Side wall is close to；Shown No.1 thread segment, No. two thread segments and adjusting nut form the adjusting means.
Bushing is equipped with the mounting hole of the box bilateral wall, the No.1 construction section, No. two construction sections are arranged on lining
In set；The periphery wall of the bushing and the mounting hole of box bilateral wall are interference fitted, and internal perisporium and the No.1 of the bushing are installed
Section, No. two construction section gaps coordinate.
The bushing is powder metallurgy oiliness sliding sleeve or ball bushing.
Also include installing plate, the casing installation is on a mounting board and can be adjustable along the axis direction position of worm-wheel shaft.
Mounting hole on the installing plate is elongated hole, the long axis ray direction of the mounting hole and the axis direction of worm-wheel shaft
Parallel, the casing is bolted on mounting hole.
The beneficial effects of the utility model are：The utility model is reduced between flank by adjusting the axial location of worm gear
Gap, its essence is a part of meshing performance for sacrificing worm and gear, to reduce backlash, to reach regulation Worm Wheel System
The purpose of backlass, there is the characteristics of simple and compact for structure, easy to adjust.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model embodiment.
Fig. 2 be in the utility model embodiment A-A to schematic diagram.
Fig. 3 is the schematic diagram of B-B direction in the utility model embodiment.
43, No. two casing 1, worm screw 2, worm gear 3, worm-wheel shaft 4, No.1 thread segment 41, No.1 construction section 42, worm gear section installations
Section 44, No. two thread segments 45, deferent segment 46, adjusting nut 5, bushing 6, installing plates 7.
Embodiment
With reference to embodiment, the utility model is described in further detail with accompanying drawing.
In embodiment, as shown in accompanying drawing 1, Fig. 2, a kind of adjustable worm type of reduction gearing of backlass, including casing 1,
Worm screw 2, worm gear 3 and worm-wheel shaft 4 are set in casing 1, worm gear 3 is circumferentially fixed to be engaged on worm-wheel shaft 4, with worm screw 2, the worm gear 3
It can move back and forth vertically, and equipped with the adjusting means for being used to adjust the axial location of worm gear 3.The present embodiment is by adjusting worm gear
Axial location reduces backlash, its essence is a part of meshing performance for sacrificing worm and gear, reducing backlash, with
Reach the purpose of regulation worm gear pole transmission backlass, there is the characteristics of simple and compact for structure, easy to adjust.
In embodiment, the worm gear 3 and the axial restraint of worm-wheel shaft 4 as shown in accompanying drawing 1, accompanying drawing 2, the worm-wheel shaft 4 can edge
Axial reciprocating moves, and the adjusting means is used for the axial location for adjusting worm-wheel shaft 4；The worm-wheel shaft 4 includes what is set gradually
No.1 thread segment 41, No.1 construction section 42, the thread segment 45 of construction section 44, two of worm gear section 43, two and deferent segment 46；Described one
Number 42, No. two construction sections 44 of construction section are separately mounted in the mounting hole of the two side of casing 1, and can be made axial movement and be revolved with circumferential
Turn, between the overall length of the No.1 construction section 42, worm gear section 43 and No. two construction sections 44 is less than between the two side outer surface of casing 1
Away from；Adjusting nut 5, the adjusting nut 5 and the both sides of casing 1 are mounted on described 41, No. two thread segments 45 of No.1 thread segment
Wall is close to；Shown 41, No. two thread segments 45 of No.1 thread segment form the adjusting means with adjusting nut 5.In practical operation,
The adjusting nut 5 of side is unclamped in circumferentially fixed worm-wheel shaft 4, the direction adjusted according to worm-wheel shaft 4, then tightens another regulation spiral shell
Mother 5, in the presence of No.1 thread segment 41 or No. two thread segments 45, worm-wheel shaft 4 slowly moves, and after the completion of to be adjusted, tightens the
One adjusting nut 5.Round nut can be selected in adjusting nut 5 herein.In addition, adjusting nut 5 and the two side of casing 1 connect
Plane bearing is provided between contacting surface.
In embodiment, as shown in accompanying drawing 1, Fig. 2, bushing 6 is equipped with the mounting hole of the two side of casing 1, described one
Number 42, No. two construction sections 44 of construction section are arranged in bushing 6；The periphery wall of the bushing 6 and the mounting hole mistake of the two side of casing 1
It is full of cooperation, 42, No. two gaps of construction section 44 of internal perisporium and No.1 construction section of the bushing 6 coordinate.The bushing 6 of the present embodiment is protected
Card worm-wheel shaft 4 is smoothed out adjusting, moreover it is possible to reduces abrasion, increases the service life.
In embodiment, the bushing 6 is powder metallurgy oiliness sliding sleeve or ball bushing.Bushing 6 can be according to worm-wheel shaft 4 herein
Rotating speed, load, select different types.
In embodiment, as shown in Figure 3, also include installing plate 7, the casing 1 is arranged on installing plate 7 and can edge
The axis direction position of worm-wheel shaft 4 is adjustable；Mounting hole on the installing plate 7 is elongated hole, the long axis ray side of the mounting hole
To parallel with the axis direction of worm-wheel shaft 4, the casing 1 is bolted on mounting hole.As a rule, worm-wheel shaft 4 is made
For power output shaft, its position is all limited extremely by workpiece, so its axial location and inconvenience are adjusted, therefore the present embodiment
Accommodation is made, i.e. the shaft core position of worm-wheel shaft 4 is relatively fixed, and the miscellaneous part of decelerator（Including motor）All with casing 1
Moved relative to worm-wheel shaft 4 so that the present embodiment adaptability is stronger.
Specifically, in actual mechanical process, the axial location of worm gear can only be adjusted within the specific limits
It is whole, preferably simply finely tune.Adjustment is too big, and worm and gear engagement can be caused insufficient, increase noise, long time running can also be hurt
Worm and gear, the life-span is reduced, or even brewage accident.
Obviously, above-described embodiment of the present utility model is merely to illustrate that the utility model example, and is not
Restriction to embodiment of the present utility model.For those of ordinary skill in the field, on the basis of described above
On can also make other various forms of changes or variation.There is no need and unable to give poor example to all embodiments.
And these belong to the obvious changes or variations that connotation of the present utility model is amplified out and still fall within the utility model
Protection domain.
Claims (7)
1. a kind of adjustable worm type of reduction gearing of backlass, including casing, worm screw, worm gear and worm-wheel shaft, snail are set in casing
Take turns circumferentially fixed on worm-wheel shaft and worm engaging, it is characterised in that：The worm gear can move back and forth vertically, and with useful
In the adjusting means of regulation worm gear axial location.
2. the adjustable worm type of reduction gearing of backlass according to claim 1, it is characterised in that：The worm gear and snail
Axle axial is fixed, and the worm-wheel shaft can move back and forth vertically, and the adjusting means is used for the axial location for adjusting worm-wheel shaft.
3. the adjustable worm type of reduction gearing of backlass according to claim 2, it is characterised in that：The worm-wheel shaft bag
Include the No.1 thread segment set gradually, No.1 construction section, worm gear section, No. two construction sections, No. two thread segments and deferent segment；
The No.1 construction section, No. two construction sections are separately mounted in the mounting hole of box bilateral wall, and can make axial movement with
Rotate in a circumferential direction, between the overall length of the No.1 construction section, worm gear section and No. two construction sections is less than between box bilateral wall outer surface
Away from；
Adjusting nut is mounted on the No.1 thread segment, No. two thread segments, the adjusting nut is close to box bilateral wall,
Shown No.1 thread segment, No. two thread segments and adjusting nut form the adjusting means.
4. the adjustable worm type of reduction gearing of backlass according to claim 3, it is characterised in that：The casing both sides
Bushing is equipped with the mounting hole of wall, the No.1 construction section, No. two construction sections are arranged in bushing；The periphery wall of the bushing
It is interference fitted with the mounting hole of box bilateral wall, internal perisporium and No.1 construction section, No. two construction section gaps of the bushing coordinate.
5. the adjustable worm type of reduction gearing of backlass according to claim 4, it is characterised in that：The bushing is powder
The metallurgical oiliness sliding sleeve in end or ball bushing.
6. the adjustable worm type of reduction gearing of backlass according to claim 1, it is characterised in that：Also include installation
Plate, casing installation is on a mounting board and can be adjustable along the axis direction position of worm-wheel shaft.
7. the adjustable worm type of reduction gearing of backlass according to claim 6, it is characterised in that：On the installing plate
Mounting hole be elongated hole, the long axis ray direction of the mounting hole is parallel with the axis direction of worm-wheel shaft, and the casing passes through spiral shell
Bolt is fixed on mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720709393.2U CN206860768U (en) | 2017-06-19 | 2017-06-19 | The adjustable worm type of reduction gearing of backlass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720709393.2U CN206860768U (en) | 2017-06-19 | 2017-06-19 | The adjustable worm type of reduction gearing of backlass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206860768U true CN206860768U (en) | 2018-01-09 |
Family
ID=60826713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720709393.2U Expired - Fee Related CN206860768U (en) | 2017-06-19 | 2017-06-19 | The adjustable worm type of reduction gearing of backlass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206860768U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667923A (en) * | 2019-01-09 | 2019-04-23 | 银川威力传动技术股份有限公司 | A kind of worm and gear lateral clearance adjusting device |
| CN110500385A (en) * | 2019-08-15 | 2019-11-26 | 陕西科技大学 | A kind of soot blower retarder |
-
2017
- 2017-06-19 CN CN201720709393.2U patent/CN206860768U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667923A (en) * | 2019-01-09 | 2019-04-23 | 银川威力传动技术股份有限公司 | A kind of worm and gear lateral clearance adjusting device |
| CN109667923B (en) * | 2019-01-09 | 2024-04-12 | 银川威力传动技术股份有限公司 | Method for adjusting gear backlash through worm and gear backlash adjusting device |
| CN110500385A (en) * | 2019-08-15 | 2019-11-26 | 陕西科技大学 | A kind of soot blower retarder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20190619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |