CN1218812C - Backlash eliminating driving mechanism for transverse motion of digitally controlled machine tool - Google Patents
Backlash eliminating driving mechanism for transverse motion of digitally controlled machine tool Download PDFInfo
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- CN1218812C CN1218812C CN 03129521 CN03129521A CN1218812C CN 1218812 C CN1218812 C CN 1218812C CN 03129521 CN03129521 CN 03129521 CN 03129521 A CN03129521 A CN 03129521A CN 1218812 C CN1218812 C CN 1218812C
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- servomotor
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Abstract
The present invention relates to a transverse backlash eliminating driving mechanism of a numerical control machine tool, which comprises a servo motor, two gear wheels and a gear rack. The present invention is characterized in that the two gear wheels which are engaged with the gear rack are arranged; two gear pairs are respectively arranged between one gear wheel and the servo motor and the other gear wheel and the servo motor, wherein each gear pair comprises a driving gear and a driven gear, and at least one of the gear pairs is an inclined gear pair; a hydraulic oil cylinder is arranged, and one end of a plunger of the hydraulic oil cylinder is connected with one inclined gear of the inclined pair through an end face bearing. The present invention aims at solving the technical problem of backlash engagement in a gear driving system and realizing driving without backlashes.
Description
Technical field:
The invention relates to lathe, particularly the crack transmission mechanism that disappears that laterally moves about lathe.
Background technology:
General lathe, because the length and the weight of workpiece are limited, can adopt the adjustment workpiece to guarantee the positioning accuracy that workpiece is processed in length range, but Workpiece length and weight exceed routine, with regard to inconvenience even can't satisfy process requirements, can only lean on the adjustment of lathe own just can process assurance with positioning accuracy to workpiece adjustment.Track girder as magnetic suspension train reaches 25 meters, weight is 180 tons, huge like this workpiece has surmounted the working ability of the heavy duty machine tools of long 15 meters of existing lathe bed, need be fixed on the lathe of long 35 meters of lathe bed and process, rely on to adjust and to be fixed on the main shaft that has cutter on the column that can laterally move (being X axis) along the lathe bed total length and the column and to process in vertically (be Y-axis to), vertical position to (being that Z is axial), it is very good utilizing microcomputer numberical control system to process in such X, a Y, Z three-dimensional system.Because stroke is excessive, the column slide laterally move the screw mandrel zero-clearance transmission mechanism that can't adopt lathe, but the transmission mechanism transmission of meshing by the servomotor that is arranged on the column slide gear that drives and the tooth bar that is fixed on the lathe bed.Owing to have the back lash between gear and the tooth bar, how high no matter the precision of wheel and rack itself has, this back lash exists all the time, and just size is different.This back lash influences the steady and locating accuracy of transmission, and for Digit Control Machine Tool, the precision of executing agency itself is not enough, and the effect of its numerical control can not realize yet.The back lash between the above-mentioned transmission mechanism wheel and rack that laterally moves must be eliminated for this reason, horizontal the moving steadily and positioning accuracy of moving of over distance lathe could be guaranteed.
Summary of the invention:
The invention reside in the back lash that solves in the gear train assembly, realize the technical problem of zero-clearance transmission.
The technical scheme that the present invention solves the problems of the technologies described above:
The crack transmission mechanism that disappears that a kind of Digit Control Machine Tool laterally moves, comprise servomotor, tooth bar, two gears that are meshed with tooth bar and be separately positioned on the gear pair of forming by driving gear and driven gear between these two gears and servomotor, it is characterized in that: have at least one to be helical gear pair in two above-mentioned gear pairs; Be provided with hydraulic jack, plunger one end of this hydraulic jack links to each other with helical gear in the above-mentioned helical gear pair by the end face bearing.
The crack transmission mechanism that disappears that above-mentioned Digit Control Machine Tool laterally moves, it is characterized in that: the driving gear of this two gear pair is coaxial; Between this two gear pair and servomotor, be provided with the gear pair that a pair of intermeshing bevel gear/roller gear forms.
The present invention adopts a pair of gear to mesh with tooth bar simultaneously, a helical teeth crop rotation that promotes in the helical gear pair by hydraulic jack moves axially, because helical gear effect, this helical gear pair produces a small angle rotation, thereby drive a gear spinning roller with the tooth bar engagement, the positioning accuracy of X reference axis and the stationarity of transmission have been guaranteed in back lash between two gears just can having eliminated tooth bar and meshed.
Servomotor of the present invention can carry out the configuration of different azimuth easily by the installing space of lathe.
The present invention is simple in structure, use all be general parts commonly used, therefore easily manufactured.
Description of drawings:
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the expansion schematic diagram of another structure of the present invention.
The specific embodiment:
See also shown in Figure 1ly, the present invention comprises servomotor 1, be fixed on the bed piece tooth bar 6 and with tooth bar 6 meshed gears 7.The present invention also is provided with another gear 7 ' with tooth bar 6 engagements.Gear 7 and 7 ' is separately fixed on the end-journal of driven axle 5 and 5 '.Driven axle 5 is provided with driven gear 4, and this driven gear 4 and driving gear 3 engagements that are arranged on the driving shaft 2 form a pair of gear pair.Equally, also be provided with driven gear 4 ' on the driven axle 5 ', this driven gear 4 ' is meshed with another driving gear 3 ' on being arranged on driving shaft 2, and this driven gear 4 ' and driving gear 3 ' be helical gear, forms a pair of helical gear pair.Driving shaft 2 is connected with servomotor 1; Also can between driving shaft 2 and servomotor 1, a pair of gear pair be set again, with further reduction of speed and servomotor 1 can be arranged in parallel to adapt to the installing space of lathe diverse location around driving shaft 2.Locate to be provided with hydraulic jack 8 at driving shaft 2 contiguous driving gears 3 ' with helical teeth, the plunger 81 of this hydraulic jack 8 is connected with this driving gear 3 ' by end face bearing 9.This hydraulic jack 8 also can be arranged on the driven axle 5 ', and plunger 81 is connected with driven gear 4 ' by end face bearing 9.
See also shown in Figure 2ly, another kind of structure of the present invention and above-mentioned structure are basic identical, and different is is provided with one and comprises the bevel gear pair that a pair of intermeshing driving bevel gear 10 and passive bevel gear 11 are formed between driving shaft 2 and servomotor 1.This driving bevel gear 10 is arranged on the output axle head of servomotor 1, and 11 on passive bevel gear is fixed on the driving shaft 2.Thus, servomotor 1 can be arranged with the driving shaft 2 rectangular or a certain angles of cut, so that better adapt to the installing space of lathe.
Because the plunger 81 of hydraulic jack 8 is pushing away main or driven gear 3 ' or 4 ' all the time, even also arbitrary gear moves axially in this helical gear pair, this just forces minute angle of driven axle 5 ' rotation, thus eliminated gear 7 and 7 ' with tooth bar 6 between the back lash, the realization crack transmission that disappears.
Claims (2)
1, the laterally mobile crack transmission mechanism that disappears of a kind of Digit Control Machine Tool, comprise servomotor, tooth bar, two gears that are meshed with tooth bar and be separately positioned on the gear pair of forming by driving gear and driven gear between these two gears and servomotor, it is characterized in that: have at least one to be helical gear pair in two above-mentioned gear pairs; Be provided with hydraulic jack, plunger one end of this hydraulic jack links to each other with helical gear in the above-mentioned helical gear pair by the end face bearing.
2, the laterally mobile crack transmission mechanism that disappears of Digit Control Machine Tool according to claim 1, it is characterized in that: the driving gear of this two gear pair is coaxial; Between this two gear pair and servomotor, be provided with the gear pair that a pair of intermeshing bevel gear or roller gear form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03129521 CN1218812C (en) | 2003-06-26 | 2003-06-26 | Backlash eliminating driving mechanism for transverse motion of digitally controlled machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03129521 CN1218812C (en) | 2003-06-26 | 2003-06-26 | Backlash eliminating driving mechanism for transverse motion of digitally controlled machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1473683A CN1473683A (en) | 2004-02-11 |
| CN1218812C true CN1218812C (en) | 2005-09-14 |
Family
ID=34153564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03129521 Expired - Lifetime CN1218812C (en) | 2003-06-26 | 2003-06-26 | Backlash eliminating driving mechanism for transverse motion of digitally controlled machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1218812C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359205C (en) * | 2005-12-02 | 2008-01-02 | 天水星火机床有限责任公司 | High-ridigitypreloading system |
| CN100545487C (en) * | 2008-04-22 | 2009-09-30 | 南京数控机床有限公司 | Clearance eliminating mechanism during a kind of mechanical transmission |
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| CN100431782C (en) * | 2006-09-11 | 2008-11-12 | 重庆机床(集团)有限责任公司 | Digital control automatic dry cutting gear-hobbing machine in high speed |
| CN101450420B (en) * | 2007-11-29 | 2011-04-27 | 上海团结普瑞玛激光设备有限公司 | Large-table numerical control laser cutting machine |
| CN102597351B (en) * | 2009-09-09 | 2015-04-29 | 恒天(奥地利)控股有限公司 | Device for needling a fibrous web |
| CN101949438B (en) * | 2010-09-21 | 2013-04-03 | 江苏恒力组合机床有限公司 | Power transmission mechanism capable of independently automatically eliminating backlash |
| CN102166625A (en) * | 2010-11-25 | 2011-08-31 | 苏州苏铸成套装备制造有限公司 | Gate milling device |
| CN102009131A (en) * | 2010-12-02 | 2011-04-13 | 苏州苏铸成套装备制造有限公司 | Moving device for mill pouring gate machine |
| CN102078935A (en) * | 2010-12-02 | 2011-06-01 | 苏州苏铸成套装备制造有限公司 | Horizontal movement device of gate milling machine |
| TWI461254B (en) * | 2010-12-17 | 2014-11-21 | Factory Automation Technology | Driving device for working platform |
| CN102878278A (en) * | 2012-06-27 | 2013-01-16 | 邵文远 | Servo speed-reducing mechanism capable of automatically eliminating clearance |
| CN103537942A (en) * | 2012-07-17 | 2014-01-29 | 昆山华辰重机有限公司 | Feeding anti-backlash system used for heavy numerically-controlled roll lathe |
| CN102773700A (en) * | 2012-07-25 | 2012-11-14 | 浙江旷达纺织机械有限公司 | Lateral translation structure of camb aligning device for harness cord jacquard |
| CN102773501B (en) * | 2012-07-26 | 2014-12-17 | 齐齐哈尔齐一机工业产品有限公司 | Machine tool special for wedge-caulking processing of copper bars on large motor rotor |
| CN102773500B (en) * | 2012-07-26 | 2015-04-15 | 齐齐哈尔齐一机工业产品有限公司 | Wedge-caulking processing method for copper bars on large motor rotor |
| CN102788143A (en) * | 2012-07-30 | 2012-11-21 | 邵文远 | Automatic gap eliminating servo reducing mechanism |
| CN103042422B (en) * | 2013-01-10 | 2015-08-26 | 柳州正菱重型数控机床有限公司 | Double-gear anti-backlash feed box |
| CN104265855B (en) * | 2014-09-02 | 2017-02-08 | 武汉国威重型机床股份有限公司 | Torsion bar anti-backlash drive device |
| CN105042057A (en) * | 2015-08-19 | 2015-11-11 | 芜湖市汽车产业技术研究院有限公司 | Clearance eliminating device applicable to gear-and-rack drive mechanism and clearance eliminating method thereof |
| CN105397552A (en) * | 2015-12-02 | 2016-03-16 | 湖南中大创远数控装备有限公司 | Gear clearance eliminating transmission mechanism |
| CN112720022A (en) * | 2020-12-30 | 2021-04-30 | 天水星火机床有限责任公司 | Vertical double gear gap eliminating speed reducer that feeds of horizontal lathe |
-
2003
- 2003-06-26 CN CN 03129521 patent/CN1218812C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359205C (en) * | 2005-12-02 | 2008-01-02 | 天水星火机床有限责任公司 | High-ridigitypreloading system |
| CN100545487C (en) * | 2008-04-22 | 2009-09-30 | 南京数控机床有限公司 | Clearance eliminating mechanism during a kind of mechanical transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1473683A (en) | 2004-02-11 |
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| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI MAGLEV TRANSPORTATION DEVELOPMENT CO., LT Free format text: FORMER NAME OR ADDRESS: SHANGHAI MAGNETIC SUSPENSION TRAFFIC DEVELOPMENT CO., LTD. |
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Address after: 201204 No. 2520, Pudong, Shanghai, Longyang Road Patentee after: Shanghai Maglev Transportation Development Co.,Ltd. Address before: 201204 No. 2520, Pudong, Shanghai, Longyang Road Patentee before: Shanghai Maglev Transportation Development Co.,Ltd. |
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Owner name: TONGJI UNIVERSITY Free format text: FORMER OWNER: SHANGHAI MAGLEV TRANSPORTATION DEVELOPMENT CO., LTD. Effective date: 20150217 |
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Effective date of registration: 20150217 Address after: 200092 Shanghai City, Yangpu District Siping Road No. 1239 Patentee after: TONGJI University Address before: 201204 No. 2520, Pudong, Shanghai, Longyang Road Patentee before: Shanghai Maglev Transportation Development Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20050914 |
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| CX01 | Expiry of patent term |