CN203875669U - Double-motor double-gear anti-backlash mobile positioning structure - Google Patents
Double-motor double-gear anti-backlash mobile positioning structure Download PDFInfo
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- CN203875669U CN203875669U CN201320862918.8U CN201320862918U CN203875669U CN 203875669 U CN203875669 U CN 203875669U CN 201320862918 U CN201320862918 U CN 201320862918U CN 203875669 U CN203875669 U CN 203875669U
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- 238000003379 elimination reaction Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000033001 locomotion Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000003252 repetitive effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
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Abstract
The utility model relates to a linear motion mechanism of a machine tool and discloses a double-motor double-gear anti-backlash mobile positioning structure. The double-motor double-gear anti-backlash mobile positioning structure comprises the machine tool (1), on which a working table (2) is arranged; the right side of the working table (2) is provided with a right driving mechanism (4); and the left side of the working table (2) is provided with a left driving mechanism (5). The double-motor double-gear anti-backlash mobile positioning structure has following beneficial effects: two motors are utilized for respectively driving two transmission gears to be engaged with a same rack to further drive the working table via a decelerator and inter-coordination between torques of the two servo motors is achieved; gaps are eliminated via reversed pre-tightening forces among the two gears and the rack; and repeated positioning precision and bearing capability are enhanced.
Description
Technical field
The utility model relates to straight-line motion mechanism on lathe, has related in particular to a kind of bi-motor gear clearance elimination running fix structure.
Background technology
At present, the linear motion axis great majority in traditional machine tool adopt roller screw transmission, but ball-screw is subject to the restriction of length, and along with more and more higher to required precision mobile and location, and traditional ball-screw just cannot meet the demand of actual processing.Also the rack-and-pinion transmission that had traditional machine adopted, but eliminate the back clearance producing in rack-and-pinion transmission, traditional way is the machinery gap that disappears, by the form of two gears outputs of single motor input, this gap method precision that disappears is not high, and can bearing capacity limited.
Summary of the invention
The utility model requires low for roller screw running fix structure precision traditional in prior art, and the common rack-and-pinion transmission gap method precision that disappears is not high, the shortcoming such as can bearing capacity limited, provide a kind of by double-motor anti-backlash technology, improve repetitive positioning accuracy, improve bearing capacity.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
Bi-motor gear clearance elimination running fix structure, comprise lathe, workbench is set on lathe, the right side of described workbench arranges right driving mechanism, the left side of workbench arranges left driving mechanism, tooth bar is set on lathe, tooth bar is arranged on the side of guide rail, and right driving mechanism and left driving mechanism are positioned at the side of tooth bar, on lathe, be fixed with the guide rail of one or more, the bottom of workbench arranges more than one straight-line guide rail slide block, and straight-line guide rail slide block and guide rail are connected, and cylindrical bar is also set on workbench.Left driving mechanism is identical with right driving mechanism structure.
As preferably, on described lathe, tooth bar is set.
As preferably, on described lathe, be fixed with the guide rail of one or more, the bottom of workbench arranges more than one straight-line guide rail slide block, and straight-line guide rail slide block and guide rail are connected.
As preferably, described right driving mechanism comprises motor and driven wheel, and driving gear wheel and rack is connected.
As preferably, on described motor, decelerator is set, decelerator is connected with driven wheel.
As preferably, described right driving mechanism and left driving mechanism are symmetricly set on workbench both sides.Right driving mechanism and left driving mechanism are positioned at the side of tooth bar.
The utility model is owing to having adopted above technical scheme, there is significant technique effect: the utility model adopts two motors to drive respectively two travelling gears and the engagement of same toothed rack to drive workbench by decelerator, the moment of two servomotors is coordinated mutually, by the reverse pretightning force between two wheel and racks, eliminate gap, improve repetitive positioning accuracy and bearing capacity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the sectional view of A-A face in Fig. 1.
The toponym that in above accompanying drawing, each number designation refers to is as follows: wherein 1-lathe, 2-workbench, 3-tooth bar, 4-right driving mechanism, 5-left driving mechanism, 6-guide rail, 21-cylindrical bar, 22-straight-line guide rail slide block, 41-motor, 42-driven wheel.
The specific embodiment
Below in conjunction with accompanying drawing 1 to Fig. 2 and embodiment, the utility model is described in further detail:
Embodiment 1
Bi-motor gear clearance elimination running fix structure, as shown in Figure 1 to Figure 2, comprises lathe 1, and workbench 2 is set on lathe 1, and the right side of described workbench 2 arranges right driving mechanism 4, and the left side of workbench 2 arranges left driving mechanism 5.Left driving mechanism 5 is identical with right driving mechanism 4 structures.
Tooth bar 3 is set on lathe 1.On lathe 1, be fixed with the guide rail 6 of one or more, the bottom of workbench 2 arranges more than one straight-line guide rail slide block 22, and straight-line guide rail slide block 22 is connected with guide rail 6.By left driving mechanism 5, position with right driving mechanism 4, there is repetitive positioning accuracy high, can reach 0.010mm.
Right driving mechanism 4 comprises motor 41 and driven wheel 42, and driven wheel 42 is connected with tooth bar 3.On the one hand, by the reverse pretightning force between two driving gear wheel and racks, eliminate gap, improve repetitive positioning accuracy and bearing capacity; On the other hand, driving force improves greatly, can drive workbench and the workpiece of approximately 70 tons of gross weights, increases displacement, and displacement can reach 10 meters.The structure of left driving mechanism 5 is identical with right driving mechanism 4.By symmetrical Dual Drive gear 42, drive, thereby play the effect of the gap that disappears.
On motor 41, decelerator is set, decelerator is connected with driven wheel 42.Due to decelerator being set, movement velocity that on the one hand can adjusting operating platform 2, on the other hand, makes workbench 2 more steady in the process of motion.Cylindrical bar 21 is also set on workbench 2.Cylindrical bar 21 is for placing, install workpiece.Right driving mechanism 4 is symmetricly set on workbench 2 both sides with left driving mechanism 5.Two motors drive respectively two travelling gears and the engagement of same toothed rack to drive workbench by decelerator, and the moment of two servomotors is coordinated mutually.Tooth bar 3 is arranged on the side of guide rail 6, and right driving mechanism 4 and left driving mechanism 5 are positioned at the side of tooth bar 3.Driving gear wheel and rack 3 in left and right driving mechanism is connected with a joggle, and by the whole workbench of driving gear drives, moves left and right.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (4)
1. bi-motor gear clearance elimination running fix structure, comprise lathe (1), workbench (2) is set on lathe (1), it is characterized in that: the right side of described workbench (2) arranges right driving mechanism (4), the left side of workbench (2) arranges left driving mechanism (5), tooth bar (3) is set on lathe (1), tooth bar (3) is arranged on the side of guide rail (6), and right driving mechanism (4) and left driving mechanism (5) are positioned at the side of tooth bar (3), on lathe (1), be fixed with the guide rail (6) of one or more, the bottom of workbench (2) arranges more than one straight-line guide rail slide block (22), straight-line guide rail slide block (22) is connected with guide rail (6), cylindrical bar (21) is also set on workbench (2).
2. bi-motor gear clearance elimination running fix structure according to claim 1, it is characterized in that: described right driving mechanism (4) comprises motor (41) and driven wheel (42), driven wheel (42) is connected with tooth bar (3).
3. bi-motor gear clearance elimination running fix structure according to claim 2, is characterized in that: described motor arranges decelerator on (41), and decelerator is connected with driven wheel (42).
4. bi-motor gear clearance elimination running fix structure according to claim 1, is characterized in that: described right driving mechanism (4) is symmetricly set on workbench (2) both sides with left driving mechanism (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320862918.8U CN203875669U (en) | 2013-12-25 | 2013-12-25 | Double-motor double-gear anti-backlash mobile positioning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320862918.8U CN203875669U (en) | 2013-12-25 | 2013-12-25 | Double-motor double-gear anti-backlash mobile positioning structure |
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| Publication Number | Publication Date |
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| CN203875669U true CN203875669U (en) | 2014-10-15 |
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| CN201320862918.8U Expired - Lifetime CN203875669U (en) | 2013-12-25 | 2013-12-25 | Double-motor double-gear anti-backlash mobile positioning structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271841A (en) * | 2016-08-31 | 2017-01-04 | 宁波海天精工股份有限公司 | A kind of gantry many pallets exchange system travelling bogie |
| CN106736796A (en) * | 2016-12-30 | 2017-05-31 | 中捷机床有限公司 | Four motor-driven mechanisms of the bilateral large span slide of large-sized numerical control horizontal machine tool |
| CN107598643A (en) * | 2017-08-29 | 2018-01-19 | 广州德力数控设备有限公司 | Twin beams cantilever gantry-travelling anti-backlash mechanism |
| CN109027560A (en) * | 2018-09-13 | 2018-12-18 | 深圳市三阶微控实业有限公司 | A kind of high-precision XY mobile platform and its implementation |
| CN112253708A (en) * | 2020-10-28 | 2021-01-22 | 九江精密测试技术研究所 | Structure for eliminating gap between helical gear and rack of antenna test equipment |
| CN116748954A (en) * | 2023-08-24 | 2023-09-15 | 成都飞机工业（集团）有限责任公司 | Synchronous adjustment method for worm and gear double-drive swing shaft of numerical control machine tool |
-
2013
- 2013-12-25 CN CN201320862918.8U patent/CN203875669U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271841A (en) * | 2016-08-31 | 2017-01-04 | 宁波海天精工股份有限公司 | A kind of gantry many pallets exchange system travelling bogie |
| CN106271841B (en) * | 2016-08-31 | 2018-06-15 | 宁波海天精工股份有限公司 | A kind of more pallet exchange system travelling bogies in gantry |
| CN106736796A (en) * | 2016-12-30 | 2017-05-31 | 中捷机床有限公司 | Four motor-driven mechanisms of the bilateral large span slide of large-sized numerical control horizontal machine tool |
| CN107598643A (en) * | 2017-08-29 | 2018-01-19 | 广州德力数控设备有限公司 | Twin beams cantilever gantry-travelling anti-backlash mechanism |
| CN109027560A (en) * | 2018-09-13 | 2018-12-18 | 深圳市三阶微控实业有限公司 | A kind of high-precision XY mobile platform and its implementation |
| CN112253708A (en) * | 2020-10-28 | 2021-01-22 | 九江精密测试技术研究所 | Structure for eliminating gap between helical gear and rack of antenna test equipment |
| CN116748954A (en) * | 2023-08-24 | 2023-09-15 | 成都飞机工业（集团）有限责任公司 | Synchronous adjustment method for worm and gear double-drive swing shaft of numerical control machine tool |
| CN116748954B (en) * | 2023-08-24 | 2024-01-12 | 成都飞机工业（集团）有限责任公司 | Synchronous adjustment method for worm and gear double-drive swing shaft of numerical control machine tool |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310000 No. 68 Qingshan Avenue, Linan Economic Development Zone, Hangzhou, Zhejiang Province Patentee after: ZHEJIANG HANGJI Co.,Ltd. Address before: 310000 No. 68 Qingshan Avenue, Linan Economic Development Zone, Hangzhou, Zhejiang Province Patentee before: HANGZHOU HANGJI MACHINE TOOL CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |
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| CX01 | Expiry of patent term |