CN201661649U - Worm wheel and endless screw transmission mechanism and machine tool rotary work table transmission mechanism - Google Patents
Worm wheel and endless screw transmission mechanism and machine tool rotary work table transmission mechanism Download PDFInfo
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- CN201661649U CN201661649U CN 201020114806 CN201020114806U CN201661649U CN 201661649 U CN201661649 U CN 201661649U CN 201020114806 CN201020114806 CN 201020114806 CN 201020114806 U CN201020114806 U CN 201020114806U CN 201661649 U CN201661649 U CN 201661649U
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- worm
- wheel gearing
- endless screw
- transmission mechanism
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Abstract
The embodiment of the utility model discloses a worm wheel and endless screw transmission mechanism and a machine tool rotary work table transmission mechanism. The worm wheel and endless screw transmission mechanism comprises a worm wheel, a cylindrical endless screw and an annular surface endless screw, wherein the worm wheel and the cylindrical endless screw are mutually engaged, and the annular surface endless screw is arranged on a shaft of the cylindrical endless screw. The worm wheel and endless screw transmission mechanism provided by the utility model adopts a combined structure of the annular surface endless screw and the cylindrical endless screw, can provide the transmission with higher stability, higher efficiency and lower noise, and simultaneously has the advantages of compact structure, light weight, low cost and the like. The worm wheel and endless screw transmission mechanism is applied to the machine tool rotary work table transmission mechanism, and can provide better gap elimination effect than single-worm-wheel and single-endless screw mechanisms or double-worm-wheel and double-endless-screw mechanisms.
Description
Technical field
The utility model relates to the mechanical transmissioning technology field, more particularly, relates to a kind of Worm and worm-wheel gearing.
Background technique
The worm and gear transmission belongs to the alternating axis transmission, has that compact structure, velocity ratio are big, stable working, impact shock is little and advantage such as revesal self-locking.In the worm and gear transmission, suitable backlash can be avoided tooth force distortion and frictional heating and expand caused extruding or stuck phenomenon; The space that holds lubricant oil can be provided, and it is lubricated etc. to be convenient to the flank of tooth.But, because the existence of backlash brings impact, vibration, noise, reduction system servo-actuated precision and stability etc. must for the worm and gear transmission.Because it is to cause one of whole mechanism stable main reasons for decrease that manufacturing and alignment error cause the matching gap between worm gear and the worm screw, in the precision drive based on the transmission campaign, can reduce the precision of entire machine greatly.
At present, improve the worm and gear transmission accuracy in order to reduce the worm couple drive gap, common way is to improve the machining accuracy and the installation precision of worm and gear, and this way is limited to the raising of precision, and makes manufacture cost improve greatly.But just the worm and gear transmission of elimination or regulating tooth side clearance generally has three kinds of patterns: " twin worm transmission " (Cao Xijing, Zhang Chun, Liu Changqi, Li Ning. the application [J] of twin worm transmission in the accurate digital control calibration. Shaanxi Tech Univ's journal, 2003,21 (7): 70-72.) (Qiu Xinqiao. can reduce the twin worm driving mechanism of drive gap. machine-building, 2003,41 (7): 51-51), U.S. Gleason Pudong Development Bank special chain digital control gear hobbing machine bed Working table driving device adopts two worm gears, twin worm up and down parallel assembling and by axial adjustment wherein as the method for the worm screw of the resistance crack that disappears; Similarly structure has and adopts twin worm parallel or vertically be installed on the both sides of single worm gear, reach the effect in the crack that disappears by the axial adjustment of one of them worm screw, this class formation need increase gear transmission usually and realize being synchronized with the movement of two worm screws between two worm screws, also need increase the coupling that the worm screw carriage is realized relative position between two worm screws during installation, therefore can cause problems such as transmission structures is too fat to move, Transmitted chains lengthening, manufacture cost height.
" dual lead cylindrical worm transmission " (Qian Guangjin. the 5th phase of new technology new process .1983), the dual lead cylindrical worm transmission is to adjust the attenuate amount of the backlash of transmission with compensation wheel odontotripsis by the axial position of adjusting worm screw, this transmission by domestic and international application in the precision indexing mechanism of gear hobbing machine etc., its main deficiency is: the worm gear difficulty of processing is big, worm gear is few with the number of teeth that the worm meshing transmission contacts simultaneously, bearing capacity is low, easy to wear, life-span is short etc., is difficult to satisfy the requirement of heavy-loaded precision transmission.
In addition, both at home and abroad the scientific worker requires the patent of having carried out some correlative studys and disclosing some no sideshakes and the adjustable Worm and worm-wheel gearing of backlash at the crack that disappears in the engineering field." backlash device for use in transmission of precise gear worm ", number of patent application as number of patent application 200610102244.6 are 200510050421.6 " a kind of worm gearing " etc., though these transmission devices can be eliminated backlash, generally have all that transmission component is many, volume greatly, the deficiency of aspect such as complex structure or bearing capacity be big inadequately.
The model utility content
In view of this, the utility model provides a kind of Worm and worm-wheel gearing, to improve bearing capacity and simplified structure and to dwindle mechanism's volume.
For achieving the above object, the utility model provides following technological scheme:
A kind of Worm and worm-wheel gearing comprises intermeshing worm gear and cylindrical worm, also comprises the toroid helicoids worm on the axle that is arranged on described cylindrical worm and be arranged on described toroid helicoids worm one side it is applied the pre-tightening apparatus of pretightening force.
Preferably, in the above-mentioned Worm and worm-wheel gearing, described toroid helicoids worm is assemblied on the axle of described cylindrical worm by spline.
Preferably, in the above-mentioned Worm and worm-wheel gearing, described pre-tightening apparatus is a hydraulic regulating device.
Preferably, in the above-mentioned Worm and worm-wheel gearing, described hydraulic regulating device specifically comprises the sealed cavity of being made up of oil pocket cover plate and oil pocket housing, and is arranged on the sliding sleeve in this sealed cavity, and the position that is positioned at described sealed cavity inside is provided with flange.
Preferably, in the above-mentioned Worm and worm-wheel gearing, described oil pocket cover plate is in the same place by screw with the oil pocket housing.
Preferably, in the above-mentioned Worm and worm-wheel gearing, the flange on the described sliding sleeve is divided into two-part with described sealed cavity, and filler opening is all arranged on described two-part.
Preferably, in the above-mentioned Worm and worm-wheel gearing, the two ends of described cylindrical worm axle are provided with bearing.
Preferably, in the above-mentioned Worm and worm-wheel gearing, be provided with pad between described sliding sleeve and the described toroid helicoids worm.
Preferably, in the above-mentioned Worm and worm-wheel gearing, described filler opening is two, is separately positioned on described oil pocket cover plate and the oil pocket housing.
The invention also discloses a kind of machine tool rotary working table driving mechanism, comprise aforesaid Worm and worm-wheel gearing.
From above-mentioned technological scheme as can be seen, the utility model embodiment is by adopting the fabricated structure of toroid helicoids worm and cylindrical worm, can provide more steadily, efficiently, the transmission of low noise, have compact structure, advantage such as in light weight, with low cost simultaneously.And owing to adopt pre-tightening apparatus that toroid helicoids worm is carried out axial adjustment and pretension, can realize the disappear purpose in crack of worm and gear.
Worm and worm-wheel gearing provided by the utility model is compared with existing Worm and worm-wheel gearing and is had the following advantages:
1. the Worm and worm-wheel gearing that the utility model proposes has compact structure, volume is little, Transmitted chains is short and the characteristics of low cost of manufacture.Than two worm gears, twin worm structure, adopt toroid helicoids worm and shared one structure of cylindrical worm, can effectively save the space and realize main force's indexing worm and the zero transmission of resistance worm screw, thereby only need to process the volume that single worm gear reduces manufacture cost and reduces entire mechanism.
2. the toroid helicoids worm that Worm and worm-wheel gearing adopted that the utility model proposes can realize that with worm gear multiple tooth the contact with two-wire contacts, its bearing capacity and efficient are higher and be easy to form lubricant film, thereby reduce the wearing and tearing of worm and gear, can prevent the worm screw play phenomenon that causes because of the worm gear pitch error from providing transmission more stably.
3. the Worm and worm-wheel gearing that the utility model proposes adopts anchor ring worm gear and cylindrical worm or two coaxial installations of toroid helicoids worm, can provide than two more mesh regionals of cylindrical worm, thereby improve the stationarity of worm and gear transmission and reduce the transmission noise.
4. the Worm and worm-wheel gearing that the utility model proposes adopts the hydraulic regulation pre-tightening apparatus that the resistance worm screw is carried out axial adjustment and pretension, can realize the crack that dynamically disappears in the worm and gear transmission process, and, thereby reduce the wearing and tearing of worm gear and worm tooth-surface because of employing elasticity pretension can prevent effectively that worm gear from contacting with the rigidity of worm screw.
5. the Worm and worm-wheel gearing that the utility model proposes adopts resistance worm screw and the coaxial mounting structure of indexing worm, bearing that can be by two ends is directly installed on worm screw on the casing and does not need the worm screw carriage, thereby simplifies transmission structures and reduce installation difficulty.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The Worm and worm-wheel gearing structural representation that Fig. 1 provides for the utility model embodiment one;
The Worm and worm-wheel gearing structural representation that Fig. 2 provides for the utility model embodiment two.
Embodiment
The utility model provides the utility model that a kind of Worm and worm-wheel gearing is provided, to improve bearing capacity and simplified structure and to dwindle mechanism's volume.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 1, the Worm and worm-wheel gearing structural representation that Fig. 1 provides for the utility model embodiment one.
Wherein, 1 is left bearing, and 2 is right bearing, and 3 is cylindrical worm, and 4 is worm gear, and 5 is toroid helicoids worm.
The Worm and worm-wheel gearing that the utility model provides comprise worm gear 4, the cylindrical worm 3 of calibration function is provided, be assemblied in the toroid helicoids worm 5, axle head left bearing 1 and the right bearing 2 that play drag effect on 3 of the cylindrical worms by spline.Toroid helicoids worm 5 is assemblied on the axle of cylindrical worm 3 by spline.In order to simplify transmission structures and to reduce installation difficulty, be respectively equipped with left bearing 1 and right bearing 2 at the two ends of cylindrical worm axle.
In sum, the Worm and worm-wheel gearing that the utility model provides is than two worm gears, twin worm structure, adopt toroid helicoids worm and shared one structure of cylindrical worm, can effectively save the space and realize main force's indexing worm and the zero transmission of resistance worm screw, thereby only need to process the volume that single worm gear reduces manufacture cost and reduces entire mechanism.The utility model can realize that multiple tooth contact contacts with two-wire, and its bearing capacity and efficient are higher and be easy to form lubricant film, thereby reduce the wearing and tearing of worm and gear, and can prevent the worm screw play phenomenon that causes because of the worm gear pitch error from providing transmission more stably.The Worm and worm-wheel gearing that the utility model proposes adopts anchor ring worm gear and cylindrical worm or two coaxial installations of toroid helicoids worm, can provide than two more mesh regionals of cylindrical worm, thereby improve the stationarity of worm and gear transmission and reduce the transmission noise.
See also Fig. 2, the Worm and worm-wheel gearing structural representation that Fig. 2 provides for the utility model embodiment two.
Wherein, 1 is left bearing, and 2 is right bearing, and 3 is cylindrical worm, and 4 is worm gear, and 5 is toroid helicoids worm, and 6 is sliding sleeve, and 7 is the oil pocket cover plate, and 8 is the right side filler opening, and 9 is the oil pocket housing, and 10 is the left side filler opening, and 61 is flange.
The Worm and worm-wheel gearing that the utility model provides comprises worm gear 4, the cylindrical worm 3 of calibration function is provided, be assemblied in the toroid helicoids worm 5 that plays drag effect on 3 of the cylindrical worms by spline, hydraulic regulating device, axle head left bearing 1 and right bearing 2 that adjusting and pretightening force are provided that oil pocket cover plate 7, oil pocket housing 9, right side filler opening 8, left side filler opening 10 and sliding sleeve 6 are formed.Toroid helicoids worm 5 is assemblied between hydraulic regulating device and the cylindrical worm 3 by spline.Oil pocket cover plate 7 and oil pocket housing 8 are formed sealed cavity by screw together, and be arranged on sliding sleeve 6 in this sealed cavity, and the position that is positioned at described sealed cavity inside is provided with flange 61, is provided with pad between sliding sleeve 6 and the described toroid helicoids worm 5.
In the assembly process, at first the toroid helicoids worm 5 and the position of cylindrical worm 3 are adjusted not having under the situation of pretension, adjust the tooth matching angle of toroid helicoids worm 5 and worm gear 4, hydraulic regulating device is installed on worm shaft then, apply suitable pretightening force for toroid helicoids worm 5 by the pressure difference of regulating left side filler opening and right side filler opening, at last left bearing 1 and right bearing 2 are installed and be fixed on the casing by bearing base.
It will be understood by those skilled in the art that present embodiment only provides hydraulic regulating device a kind of controlling device, in addition also have other implementations in the prior art,, repeat no more once more as screw mechanism etc.
The utility model is that the disclosed Worm and worm-wheel gearing of embodiment also has the crack of disappearing function, the gear teeth left flank of cylindrical worm 3 and the engagement of the gear teeth right flank of worm gear 4 also provide driving force, apply at hydraulic regulating device under the effect of pretightening force, make the gear teeth right flank of toroid helicoids worm 5 and the gear teeth left flank of worm gear 4 remain engagement, because of worm screw has reverse auto-lock function, and what toroid helicoids worm 5 was adopted is the elasticity pretension, thereby can realize effectively eliminating the backlash in the worm and gear transmission and the purpose of backlass.
Because the Worm and worm-wheel gearing that provides of the utility model adopts the fabricated structure of toroid helicoids worm and cylindrical worm, can provide more steadily, efficiently, the transmission of low noise, have compact structure, advantage such as in light weight, with low cost simultaneously.This kind Worm and worm-wheel gearing is applied to the machine tool rotary working table driving mechanism, and the disappear crack effect better than single worm gear, single worm mechanism or double worm and gear mechanism can be provided.For the large size machine tool traverse platform,,, thereby reduce installation difficulty and the better crack function that disappears is provided so the butt diameter of toroid helicoids worm more approaches the diameter of cylindrical worm because of the worm gear diameter is bigger.In a word, the worm couple backlash eliminating equipment of employing toroid helicoids worm described in the utility model has common single worm and gear or the not available advantage of double worm and gear backlash eliminating equipment, thereby it will be able to extensive use in the serial field of eliminating drive gap, raising transmission accuracy.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a Worm and worm-wheel gearing comprises intermeshing worm gear and cylindrical worm, it is characterized in that, also comprises the toroid helicoids worm on the axle that is arranged on described cylindrical worm and be arranged on described toroid helicoids worm one side it is applied the pre-tightening apparatus of pretightening force.
2. Worm and worm-wheel gearing as claimed in claim 1 is characterized in that, described toroid helicoids worm is assemblied on the axle of described cylindrical worm by spline.
3. Worm and worm-wheel gearing as claimed in claim 1 is characterized in that, described pre-tightening apparatus is a hydraulic regulating device.
4. Worm and worm-wheel gearing as claimed in claim 3, it is characterized in that, described hydraulic regulating device specifically comprises the sealed cavity of being made up of oil pocket cover plate and oil pocket housing, and is arranged on the sliding sleeve in this sealed cavity, and the position that is positioned at described sealed cavity inside is provided with flange.
5. Worm and worm-wheel gearing as claimed in claim 4 is characterized in that, described oil pocket cover plate is in the same place by screw with the oil pocket housing.
6. Worm and worm-wheel gearing as claimed in claim 4 is characterized in that the flange on the described sliding sleeve is divided into two-part with described sealed cavity, and filler opening is all arranged on described two-part.
7. Worm and worm-wheel gearing as claimed in claim 1 is characterized in that the two ends of described cylindrical worm axle are provided with bearing.
8. Worm and worm-wheel gearing as claimed in claim 4 is characterized in that, is provided with pad between described sliding sleeve and the described toroid helicoids worm.
9. Worm and worm-wheel gearing as claimed in claim 6 is characterized in that described filler opening is two, is separately positioned on described oil pocket cover plate and the oil pocket housing.
10. a machine tool rotary working table driving mechanism is characterized in that, comprises each described Worm and worm-wheel gearing of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020114806 CN201661649U (en) | 2010-02-09 | 2010-02-09 | Worm wheel and endless screw transmission mechanism and machine tool rotary work table transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020114806 CN201661649U (en) | 2010-02-09 | 2010-02-09 | Worm wheel and endless screw transmission mechanism and machine tool rotary work table transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661649U true CN201661649U (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020114806 Expired - Fee Related CN201661649U (en) | 2010-02-09 | 2010-02-09 | Worm wheel and endless screw transmission mechanism and machine tool rotary work table transmission mechanism |
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| CN (1) | CN201661649U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028029A (en) * | 2021-02-03 | 2021-06-25 | 重庆大学 | Cylindrical ring surface combined worm, transmission pair and design and forming method thereof |
-
2010
- 2010-02-09 CN CN 201020114806 patent/CN201661649U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028029A (en) * | 2021-02-03 | 2021-06-25 | 重庆大学 | Cylindrical ring surface combined worm, transmission pair and design and forming method thereof |
| CN113028029B (en) * | 2021-02-03 | 2022-11-18 | 重庆大学 | Cylindrical ring surface combined worm, transmission pair and design and forming method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20130209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |