CN201632864U - Dual-drive anti-backlash feeding device - Google Patents
Dual-drive anti-backlash feeding device Download PDFInfo
- Publication number
- CN201632864U CN201632864U CN2010201201359U CN201020120135U CN201632864U CN 201632864 U CN201632864 U CN 201632864U CN 2010201201359 U CN2010201201359 U CN 2010201201359U CN 201020120135 U CN201020120135 U CN 201020120135U CN 201632864 U CN201632864 U CN 201632864U
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- backlash
- feeding device
- drive
- dual
- planker
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Abstract
The utility model relates to a dual-drive anti-backlash feeding device, belonging to a high-precision numerical control machine and machining center feeding device. The dual-drive anti-backlash feeding device is characterized in that a carriage is provided with two carriage driving devices side by side. The dual-drive anti-backlash feeding device has the advantage that two servo motors are adopted for linkage control, so as to lead gears of all stages to be in one-side bonding all the time, thus transmitting torque, speed or displacement accurately. In addition, the dual-drive anti-backlash feeding device has excellent servo precision and fast response characteristics while ensuring backlash transmission.
Description
Technical field
The utility model relates to Digit Control Machine Tool and machining center feeding with high precision device.
Background technology
At present in some high-accuracy speed in servo or position, the angle servo-drive system, because the existence of transmission mechanism machining error and mechanical wear, can't ignore by the error that motor to the drive gap of controll plant causes, for this reason, people adopt ways such as clearance elimination gear, automatic pre-tightening mechanism to eliminate this error, these ways can be eliminated the static error of drive gap effectively, but in the quick servomechanism of high accuracy, the motor-driven planker frequently commutates, the crack measure even employing machinery disappears is because the transient error that cause in the gap still is difficult to overcome.
Summary of the invention
When the purpose of this utility model just provides a kind of planker feed motion to link two crack feed arrangements that disappear that drive of control of two motors.
The solution that realizes the utility model purpose is that two planker drive units are installed on the planker 11 side by side.
The planker drive unit is that support 6 is fixed on the planker 11 by screw 8, by screw 9 planetary reducer 3 is installed on the support 6, the input of planetary reducer 3 is connected with servomotor 1, and the output of planetary reducer 3 is connected with gear 4, tooth bar 10 engagements on gear 4 and the lathe bed.Be provided with adjusting pad 7 between support 6 and the planker 11.
The utility model has the advantages that employing to the control that links of two servomotors, makes gears at different levels remain single-sided lamination, thus accurately transmitting torque, speed or displacement.And when guaranteeing the transmission of no gap, have good servo accuracy and fast response characteristic.Owing to two drive the electric crack load-sharing that disappears, in same application, can select to reduce the mechanical part cost than machinery disappear crack littler decelerator and tooth bar.Have desirable zero backlass, high servo-positioning precision, install simple, easy to adjust, characteristics such as cost is lower, thus make Digit Control Machine Tool and machining center positioning accuracy reach perfect precision.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the scheme of installation of two drive units of the utility model.
Among the figure: 1-servomotor, 2-bolt, 3-planetary reducer, 4-gear, 5-screw, 6-support, 7-adjusting pad, 8-screw, 9-screw, 10-tooth bar, 11-planker.
The specific embodiment
On planker 11, be installed with support 6, be provided with adjusting pad 7 between planker 11 and the support 6 by screw 8.Be installed with planetary reducer 3 by screw 9 on the another side of support 6, the input of planetary reducer 3 is fixed with servomotor 1 by bolt 2, the output of planetary reducer 3 is connected with gear 4, and the output of planetary reducer 3 is fixing with gear 4 with screw 5, tooth bar 10 engagements on gear 4 and the lathe bed.More than said mechanism planker drive unit just, two planker drive units are installed on planker 11 side by side, this support of two 6 can be made into an integral support.
Operation principle is a drive unit gear drive, and another drive unit gear electric braking is realized relatively.The preload in each stage can be realized by electric the setting, and can drive tooth bar 10 simultaneously by two drive unit gears 4.Owing to two drive the electric crack load-sharing that disappears, in same application, can select to reduce the mechanical part cost than machinery disappear crack littler decelerator and tooth bar.But its input aspect control is higher, thereby makes Digit Control Machine Tool and machining center positioning accuracy reach perfect precision.
The utility model is to utilize two motors to drive two primary pinions respectively, and this motor and primary pinion are direct connecting shaft, and no drive gap is reduced to the gap of single-stage driving to the drive gap sum of the gears at different levels of output gear by primary pinion.Disappear slot sytem in the servo operation process, adopt, make gears at different levels remain single-sided lamination the control that links of two motors, thus accurately transmitting torque, speed or feeding.And when guaranteeing the transmission of no gap, have good servo accuracy and fast response characteristic.For realizing the crack control that disappears, ideal scheme is to make two motors respectively as the power motor of forward drive and reverse drive, the forward motor keeps forward torque that is enough to eliminate drive gap of output when counter-rotating, reverse motor keeps opposing torque that is enough to eliminate drive gap of output when just changeing.In this process, any time all has a motor to be in the state of oppositely exerting oneself, so the power that requires each motor is all greater than the actual power demand of system.Two drivings crack that disappears is system in the actual crack that disappears at folk prescription during to the output torque, and the transmission of torque direction of transmission system is constant, so there is not clearance issues.Only when system changeover transmission of torque direction, clearance issues just highlights.The actual crack control of disappearing is near system's torque is output as zero zone two motors to be applied a torque offset that is enough to overcome the gap, make in this torque range two motors crack of implementing to disappear drive, and after crossing this zone, two motors is then worked in coordination with and exerted oneself.Like this, each power of motor is chosen as half of system's peak power.The utility model slot sytem typical technology index that disappears at present is as follows:
The position adjustments precision: ± 1 pulse, the speed governing linearity error: ± 0.1%, the static difference rate: 0.05%, stablize speed ratio: greater than 10000 times, closed loop step response: rise time 20ms; Overshoot is less than 10%; The number of oscillation is less than 1.5 times, and speed ring bandwidth: 0～30Hz (3db).
Claims (3)
1. two crack feed arrangement that disappears that drives is characterized in that being equipped with side by side on the planker (11) two planker drive units.
2. according to the said two crack feed arrangements that disappear that drive of claim 1, it is characterized in that said planker drive unit is that support (6) is fixed on the planker (11) by screw (8), support (6) is gone up and by screw (9) planetary reducer (3) is installed, the input of planetary reducer (3) is connected with servomotor (1), the output of planetary reducer (3) is connected with gear (4), tooth bar (10) engagement on gear (4) and the lathe bed.
3. according to the said two crack feed arrangements that disappear that drive of claim 2, it is characterized in that being provided with adjusting pad (7) between said support (6) and the planker (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201201359U CN201632864U (en) | 2010-02-25 | 2010-02-25 | Dual-drive anti-backlash feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201201359U CN201632864U (en) | 2010-02-25 | 2010-02-25 | Dual-drive anti-backlash feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201632864U true CN201632864U (en) | 2010-11-17 |
Family
ID=43077342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201201359U Expired - Fee Related CN201632864U (en) | 2010-02-25 | 2010-02-25 | Dual-drive anti-backlash feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201632864U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554679A (en) * | 2012-01-19 | 2012-07-11 | 上海三一精机有限公司 | Gantry-travelling drive mechanism |
| CN105540204A (en) * | 2014-11-01 | 2016-05-04 | 天津市爱德恒业科技发展有限公司 | Novel automatic positioning device |
| CN105621056A (en) * | 2014-11-01 | 2016-06-01 | 天津市爱德恒业科技发展有限公司 | Device for unidirectionally controlling automatic positioning through weight sensor |
| CN105621062A (en) * | 2014-11-01 | 2016-06-01 | 天津市爱德恒业科技发展有限公司 | Device for controlling automatic positioning through weight sensors |
-
2010
- 2010-02-25 CN CN2010201201359U patent/CN201632864U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554679A (en) * | 2012-01-19 | 2012-07-11 | 上海三一精机有限公司 | Gantry-travelling drive mechanism |
| CN105540204A (en) * | 2014-11-01 | 2016-05-04 | 天津市爱德恒业科技发展有限公司 | Novel automatic positioning device |
| CN105621056A (en) * | 2014-11-01 | 2016-06-01 | 天津市爱德恒业科技发展有限公司 | Device for unidirectionally controlling automatic positioning through weight sensor |
| CN105621062A (en) * | 2014-11-01 | 2016-06-01 | 天津市爱德恒业科技发展有限公司 | Device for controlling automatic positioning through weight sensors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20140225 |