CN203779130U - Anti-backlash and static pressure full closed-loop working platform provided double worms - Google Patents
Anti-backlash and static pressure full closed-loop working platform provided double worms Download PDFInfo
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- CN203779130U CN203779130U CN201420139011.3U CN201420139011U CN203779130U CN 203779130 U CN203779130 U CN 203779130U CN 201420139011 U CN201420139011 U CN 201420139011U CN 203779130 U CN203779130 U CN 203779130U
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Abstract
The utility model discloses an anti-backlash and static pressure full closed-loop working platform provided double worms. A main shaft of the working platform can be mounted in a housing of the working platform rotationally; the main shaft of the working platform is fixedly connected with a worm gear coaxially; a main driving worm and an anti-backlash worm, which are meshed with the worm gear, are mounted on the housing of the working platform; a main driving servo motor is connected with the main driving worm through a speed reducer; an anti-backlash servo motor is connected with the anti-backlash worm through the speed reducer; the main shaft of the working platform adopts a double-conical-section structure, wherein the diameter of the larger end of an upper conical section is larger than that of the larger end of a lower conical section. The full closed-loop working platform adopts a double-worm anti-backlash structure which is driven and controlled individually to realize an anti-backlash function so as to lower requirement on processing accuracy of each component and be mounted and debugged more conveniently; furthermore, the double-conical-section structure adopted by the main shaft utilizes an automatic center-aligning effect of a conical surface to lower difficulty of mounting and debugging.
Description
Technical field
The utility model relates to rotary table field, particularly a kind of twin worm gap static pressure closed-loop workbench that disappears.
Background technology
Along with the development of Gear milling process, the fields such as current equipment manufacture, engineering machinery, wind-powered electricity generation are very large to the demand of high precision large-sized numerical control gear milling machine, but traditional tooth milling machine workbench exists the problem that positioning precision is not accurate enough, efficiency is on the low side, seriously restrict the development of Gear milling process to high accuracy, high efficiency direction.
At present, twin worm worm anti-backlash transmission device is to apply type of belt drive more widely, its concrete structure is generally, initiatively worm screw is connected by a pair of pinion being meshed with driven worm screw, the parallel worm seat that is installed on, and initiatively worm screw is meshed with two worm gears that are made of one respectively with driven worm screw, two hands of worms are contrary, fill a hydraulic cylinder in one end of driven worm screw and apply an axial force, make its flank of tooth that compresses driven worm screw, to reach the object of the gap transmission that disappears.This twin worm worm anti-backlash transmission mechanism, can realize big speed ratio, stable drive, precision high although also have, but mainly there is following problem: the one, due to the uniqueness of worm gear process tool, a worm gear must be equipped with a worm gear hob identical with the worm screw parameter of its engagement, has increased the difficulty of worm gear processing; The 2nd, worm gear processing can only gear hobbing, improves precision difficulty large; The 3rd, because Worm Wheel System has inseparability, rigging error directly affects the driving error of transmission mechanism.And this structure is higher to requirement on machining accuracy, complex structure.
For example Chinese patent CN201544039U has recorded a kind of numerical-control double-worm anti-backlash hydrostatic rotating worktable with high precision, adopts the structure of two worm gears, wherein between two worm screws, just connect by high-precision gear train, and the setting gap oil cylinder that disappears pulls and moves axially.Complex structure, processing, installment and debugging be difficulty comparatively.
Chinese patent CN103234024A has recorded a kind of twin worm Worm gear mechanism machinery gap transmission device that disappears, and between two worm screws, also connects by power transmission shaft 22, can manually adjust and control easily drive gap.The problem existing is also that required precision is high.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of twin worm gap static pressure closed-loop workbench that disappears, the gap that can eliminate workbench main shaft, and lower for requirement on machining accuracy, be convenient to control; The positioning states stopping in working table movement, provides contrary moment by main driving worm screw with the servomotor of disappear gap worm screw and connection thereof simultaneously, by the latching characteristics of worm gear, forms great circumferential registration rigidity.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of twin worm gap static pressure closed-loop workbench that disappears, workbench main shaft is rotatably installed in workbench housing, workbench main shaft is coaxially fixedly connected with worm gear, the main driving worm screw engaging with worm gear and the gap worm screw that disappears are installed on workbench housing, main driving servomotor is connected with main driving worm screw by reductor, and the gap that disappears servomotor is connected with the gap worm screw that disappears by reductor.
Described main driving worm screw and the gap worm screw that disappears are positioned at positions different on circumference.
Described workbench main shaft adopts biconial segment structure, and wherein the end diameter of upper conical section is greater than the outside diameter of inferior pyramidal section.
Between upper conical section and inferior pyramidal section, be also provided with worm gear construction section, worm gear is arranged on worm gear construction section, and worm gear is fixedly connected with the lower surface of upper conical section by screw.
Between workbench housing upper surface and workbench main shaft, be provided with upper surface oil pocket, between workbench main shaft lower surface and workbench housing, be provided with lower surface oil pocket;
Between upper conical section of workbench main shaft and workbench housing, be provided with conical surface oil pocket, between upper conical section and workbench housing, be provided with lower conical surface oil pocket, all oil pockets form hydrostatic support.
Connect upper surface oil pocket, lower surface oil pocket, on be provided with capillary restrictor on the oil feed line of conical surface oil pocket and lower conical surface oil pocket.
Described workbench main shaft is hollow-core construction, and dust lead bucket is inside housed.
Between workbench housing and workbench main shaft, be provided with round steel grid.
A kind of twin worm that the utility model provides gap static pressure closed-loop workbench that disappears, realizes by the twin worm gap-eliminating structure that adopts drive and control the gap that disappears, thereby reduces the requirement to each part processing precision, and installment and debugging is also more convenient.The workbench main shaft structure of the biconial section further arranging, utilizes the automatic aligning effect of taper surface, has also reduced the difficulty of installation and debugging, and the utility model is more easily safeguarded in client's use procedure.Worm gear is arranged between two conical sections, is convenient to adopt the structure of conical section, and stressed also more reasonable.Adopt the workbench main shaft of hollow-core construction to reduce the weight of workbench main shaft, be also convenient to arrange dust lead bucket therein, coordinate the use of Scrap-removing machine can conveniently add the iron filings discharge producing man-hour.The round steel grid that arrange are convenient to realize closed-loop control.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is overall structure schematic top plan view of the present utility model.
Fig. 2 is the A-A cross-sectional schematic of Fig. 1.
Fig. 3 is the schematic top plan view of worm gear and worm engaging structure in the utility model.
Fig. 4 is stereogram of the present utility model.
In figure: workbench main shaft 1, workbench housing 2, worm gear 3, reductor 4, main driving worm screw 5, main driving servomotor 6, the gap that disappears servomotor 7, the gap that disappears worm screw 8, dust lead bucket 9, round steel grid 10, upper surface oil pocket 11, upper conical surface oil pocket 12, lower conical surface oil pocket 13, lower surface oil pocket 14, upper conical section 15, inferior pyramidal section 16.
Detailed description of the invention
In Fig. 1 ~ 4, a kind of twin worm gap static pressure closed-loop workbench that disappears, workbench main shaft 1 is rotatably installed in workbench housing 2, workbench main shaft 1 is coaxially fixedly connected with worm gear 3, the main driving worm screw 5 engaging with worm gear 3 and the gap worm screw 8 that disappears are installed on workbench housing 2, main driving servomotor 6 is connected with main driving worm screw 5 by reductor 4, and the gap that disappears servomotor 7 is connected with the gap worm screw 8 that disappears by reductor 4.Under the control coordination of digital control system with principal and subordinate's s function, main driving servomotor 6 provides the moment that rotatablely moves of workbench, and the gap that disappears servomotor 7 provides opposing torque, eliminates the backlass of workbench worm gear in motion state; With contrary servo locking moment, workbench main shaft locking is positioned to position location with the gap servomotor 7 that disappears at the main driving servomotor 6 of standstill state.And can be by the latching characteristics of worm gear, form great circumferential registration rigidity.Principal and subordinate's Shaft and NC Machining Test function is prior art, repeats no more here.
Between workbench housing 2 and workbench main shaft 1, be provided with round steel grid 10.Preferred as in Fig. 2, positioning precision when round steel grid are housed in workbench bottom with raising worktable rotary, and realize closed-loop according to the feedback signal of round steel grid and automatically control.
Described main driving worm screw 5 and the gap worm screw 8 that disappears are positioned at positions different on circumference, and conventionally adopting spacing is the position of 90 °.Structure thus, compared with prior art, is convenient to install and processing.
In preferred scheme, described workbench main shaft 1 adopts biconial segment structure, wherein conical section is back taper, and wherein the outside diameter of upper conical section 15 is greater than the outside diameter of inferior pyramidal section 16, and the end diameter of upper conical section 15 is also greater than the outside diameter of inferior pyramidal section 16.What in prior art, conventionally adopt is axial, radially two hydrostatic slideways, for example in CN201544039U numerical-control double-worm anti-backlash hydrostatic rotating worktable with high precision, record, require very high for installation and control accuracy, in running, easily there is eccentric phenomenon, and adopt common conical section structure, although can realize automatic aligning, but be not easy to the installation of worm gear 3, therefore the utility model has preferably adopted biconial segment structure, between upper conical section 15 and inferior pyramidal section 16, be also provided with worm gear construction section, worm gear 3 is arranged on worm gear construction section, worm gear 3 is fixedly connected with the lower surface of upper conical section 15 by screw.Adopt this structure, be convenient to processing and location is installed, and having realized the effect of automatic aligning, avoid occurring eccentric phenomenon in running.
Preferably, as in Fig. 2, between workbench housing 2 upper surfaces and workbench main shaft 1, be provided with upper surface oil pocket 11, between workbench main shaft 1 lower surface and workbench housing 2, be provided with lower surface oil pocket 14;
Between upper conical section 15 of workbench main shaft 1 and workbench housing 2, be provided with conical surface oil pocket 12, between upper conical section 15 and workbench housing 2, be provided with lower conical surface oil pocket 13, all oil pockets form hydrostatic support.Structure thus, workbench main shaft obtains stable totally-enclosed support under the effect of static pressure oil pressure, this structure can increase substantially the running accuracy of workbench main shaft, workbench main shaft about 0.02mm of meeting floating under the effect of static pressure oil pressure simultaneously, workbench main shaft is suspended on workbench housing, sliding friction while having reduced worktable rotary between workbench main shaft and workbench housing, the speed while having improved worktable rotary, the while has also increased the service life of workbench.
Connect upper surface oil pocket 11, lower surface oil pocket 14, on be provided with capillary restrictor on the oil feed line of conical surface oil pocket 12 and lower conical surface oil pocket 13.Structure thus, is convenient to accurately control static pressure oil pressure.
Described workbench main shaft 1 is hollow-core construction, and dust lead bucket 9 is inside housed.Adopt the workbench main shaft of hollow-core construction to reduce the weight of workbench main shaft, be also convenient to arrange dust lead bucket therein, coordinate the use of Scrap-removing machine can conveniently add the iron filings discharge producing man-hour.The round steel grid that arrange are convenient to realize closed-loop control.
Claims (8)
1. the twin worm gap static pressure closed-loop workbench that disappears, workbench main shaft (1) is rotatably installed in workbench housing (2), it is characterized in that: workbench main shaft (1) is coaxially fixedly connected with worm gear (3), the main driving worm screw (5) engaging with worm gear (3) and the gap worm screw (8) that disappears are installed on workbench housing (2), main driving servomotor (6) is connected with main driving worm screw (5) by reductor (4), and the gap that disappears servomotor (7) is connected with the gap worm screw (8) that disappears by reductor (4).
2. a kind of twin worm according to claim 1 gap static pressure closed-loop workbench that disappears, is characterized in that: described main driving worm screw (5) and the gap worm screw (8) that disappears are positioned at positions different on circumference.
3. a kind of twin worm according to claim 1 gap static pressure closed-loop workbench that disappears, is characterized in that: described workbench main shaft (1) adopts biconial segment structure, and wherein the end diameter of upper conical section (15) is greater than the outside diameter of inferior pyramidal section (16).
4. a kind of twin worm according to claim 3 gap static pressure closed-loop workbench that disappears, it is characterized in that: between upper conical section (15) and inferior pyramidal section (16), be also provided with worm gear construction section, worm gear (3) is arranged on worm gear construction section, and worm gear (3) is fixedly connected with the lower surface of upper conical section (15) by screw.
5. a kind of twin worm according to claim 3 gap static pressure closed-loop workbench that disappears, it is characterized in that: between workbench housing (2) upper surface and workbench main shaft (1), be provided with upper surface oil pocket (11), between workbench main shaft (1) lower surface and workbench housing (2), be provided with lower surface oil pocket (14);
Between upper conical section (15) of workbench main shaft (1) and workbench housing (2), be provided with upper conical surface oil pocket (12), between upper conical section (15) and workbench housing (2), be provided with lower conical surface oil pocket (13), all oil pockets form hydrostatic support.
6. a kind of twin worm according to claim 1 gap static pressure closed-loop workbench that disappears, is characterized in that: on the oil feed line that connects upper surface oil pocket (11), lower surface oil pocket (14), upper conical surface oil pocket (12) and lower conical surface oil pocket (13), be provided with capillary restrictor.
7. a kind of twin worm according to claim 1 gap static pressure closed-loop workbench that disappears, is characterized in that: described workbench main shaft (1) is hollow-core construction, and dust lead bucket (9) is inside housed.
8. a kind of twin worm according to claim 1 gap static pressure closed-loop workbench that disappears, is characterized in that: between workbench housing (2) and workbench main shaft (1), be provided with round steel grid (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420139011.3U CN203779130U (en) | 2014-03-26 | 2014-03-26 | Anti-backlash and static pressure full closed-loop working platform provided double worms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420139011.3U CN203779130U (en) | 2014-03-26 | 2014-03-26 | Anti-backlash and static pressure full closed-loop working platform provided double worms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203779130U true CN203779130U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420139011.3U Expired - Fee Related CN203779130U (en) | 2014-03-26 | 2014-03-26 | Anti-backlash and static pressure full closed-loop working platform provided double worms |
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| Country | Link |
|---|---|
| CN (1) | CN203779130U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878600A (en) * | 2014-03-26 | 2014-06-25 | 宜昌市致远新技术有限公司 | Double-worm anti-backlash static pressure full-closed-loop working table |
| CN105583640A (en) * | 2016-03-14 | 2016-05-18 | 烟台三维机床制造有限公司 | Rotary worktable borne by rotary support through straight-tooth transmission |
-
2014
- 2014-03-26 CN CN201420139011.3U patent/CN203779130U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878600A (en) * | 2014-03-26 | 2014-06-25 | 宜昌市致远新技术有限公司 | Double-worm anti-backlash static pressure full-closed-loop working table |
| CN103878600B (en) * | 2014-03-26 | 2016-08-24 | 宜昌市致远新技术有限公司 | Twin worm disappears gap static pressure closed-loop workbench |
| CN105583640A (en) * | 2016-03-14 | 2016-05-18 | 烟台三维机床制造有限公司 | Rotary worktable borne by rotary support through straight-tooth transmission |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20170326 |