CN103042422B - Double-gear anti-backlash feed box - Google Patents
Double-gear anti-backlash feed box Download PDFInfo
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- CN103042422B CN103042422B CN201310008390.2A CN201310008390A CN103042422B CN 103042422 B CN103042422 B CN 103042422B CN 201310008390 A CN201310008390 A CN 201310008390A CN 103042422 B CN103042422 B CN 103042422B
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- gear
- deceleration axis
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- driving gear
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Abstract
The invention discloses a kind of Double-gear anti-backlash feed box, relate to plant equipment manufacturing technology field, it has the driving gear arranged in casing on the power shaft of installation, described driving gear and the gears meshing be contained on power transmission shaft, driven wheel on power transmission shaft is installed be meshed with the gear be contained on one-level deceleration axis, described one-level deceleration axis is provided with the transmission gear that two gear teeth rotation directions are contrary; Gear in described transmission gear and two-stage speed-down axle first, the gear in three grades of deceleration axis first and the gear of output shaft form the first wheel chain; Transmit the gear in gear and two-stage speed-down axle second described in another, the gear in three grades of deceleration axis second and the gear on output shaft form the second gear transmission chain; Gear on gear on described output shaft and described output shaft is all meshed with workbench gear ring.The present invention's existence that can solve because of travelling gear gap affects the complete machine precision of lathe, causes the problem of processing parts Quality Down.
Description
Technical field
The present invention relates to plant equipment manufacturing technology field, especially a kind of geared feed case for heavy duty machine tools transmission.
Background technology
Gear drive is large-scale, the heavy digital control machine tool that a kind of type of belt drive, particularly stroke that heavy duty machine tools are mainly selected surpass 10 meters, and servo feed execution unit adopts rack pinion to replace ball-screw-transmission.It is simple that gear drive has structure, the advantages such as easy mounting and adjusting, but employing gear drive, under normal working condition, always have backlass exist, when interrupted cut and forward and reverse motion, will inevitably produce vibration & noise, the gap between gear directly affects positioning precision and repetitive positioning accuracy, affect the machining accuracy of lathe, cause the Quality Down of processing parts; Therefore when adopting full depth tooth roller box to carry out variable-speed feeding speed, often because the gap between gear cannot be eliminated, particularly the forward and reverse gap of the long output shaft of gear-box of driving-chain is strengthened, the technical requirement of Digit Control Machine Tool feeding cannot be met, directly affect the precision of Digit Control Machine Tool complete machine.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Double-gear anti-backlash feed box, and its existence that can solve because of travelling gear gap affects the complete machine precision of lathe, causes the problem of processing parts Quality Down.
In order to solve the problem, technical scheme of the present invention is: this Double-gear anti-backlash feed box includes casing, the driving gear be arranged on power shaft is provided with in described casing, described driving gear engages with the driven gear be contained on power transmission shaft, described power transmission shaft is provided with driven wheel, described driven wheel is meshed with the deceleration gear be contained on one-level deceleration axis, described one-level deceleration axis is provided with the transmission gear that two gear teeth rotation directions are contrary; Described transmission gear be arranged on driven gear in two-stage speed-down axle first and driving gear, be arranged on driven gear in three grades of deceleration axis first and driving gear and the driven gear be arranged on output shaft and output gear and form the first gear transmission chain; Described transmission gear be arranged on driven gear in two-stage speed-down axle second and driving gear, be arranged on driven gear in three grades of deceleration axis second and driving gear and the driven gear be arranged on output shaft and output gear and form the second gear transmission chain; The axle head of described one-level deceleration axis is provided with hydraulic pressure to disappear gap oil cylinder.
In technique scheme, more specifically scheme can also be: the described driving gear be arranged in described three grades of deceleration axis first is shifting slide gear with the described driving gear be arranged in described three grades of deceleration axis second, described shifting slide gear is connected with corresponding shift fork positioner respectively, described shift fork positioner comprises the conversion fork be connected with described shifting slide gear, and described conversion fork is fixedly connected with the piston being separated oil cylinder be arranged on casing; Described conversion fork is connected with the stroke lever stretched out outside casing, and collision block is equipped with in one end that described stroke lever stretches out outside casing, at described collision block, travel switch is housed.
Owing to adopting technique scheme, the present invention has following beneficial effect:
1, the present invention is according to two groups of gear train Synchronous Transmission, diaxon system output shaft drives the transmission in the other direction respectively of two output gears, relative rotation between two output gears makes the flank of two gears engage with the two opposite sides face of tooth bar teeth groove respectively, and gapless during commutation transmission, reaches the object of the gap that disappears.
2, the present invention is mated with high accuracy tooth bar, and drive for large-scale, heavy digital control machine tool straight-line feed axle, result of use is much better than ball-screw-transmission.
3, the present invention mates transmission with high accuracy tooth bar, and with closed-loop control, the positioning precision of lathe, repetitive positioning accuracy are easy to ensure.
4, the present invention's gear drive feeding, transmission stiffness is high, and output torque is large, pulse equivalency is little; Making and installation is convenient and reliable simultaneously, and efficiency is high, in installation process, easily control clearance elimination gear gap; Cost to disappear the low and reliable in action of gap than Dual-Servo Motor in addition.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is expanded view of the present invention.
Fig. 3 is M-M sectional view in Fig. 1.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described:
Double-gear anti-backlash feed box shown in Fig. 1, Fig. 2 and Fig. 3, include casing 19, in casing 19, power shaft I is connected with the servomotor be arranged on outside casing 19, driving gear 1 on power shaft I, engage with the driven gear 2 be contained on power transmission shaft II, power transmission shaft II is provided with driven wheel 3, driven wheel 3 is meshed with the deceleration gear 4 be contained on one-level deceleration axis III, is delivered on one-level deceleration axis III by gear active 1, driven gear 2, driven wheel 3, the reduction of speed gear teeth 4 by feed motion, one-level deceleration axis III be provided with the contrary transmission gear 5A of two identical rotation directions of parameter and transmit gear 5B, transmitting gear 5A and transmitting gear 5B is helical gear, transmit gear 5A and the driven gear 6A be arranged in two-stage speed-down axle first IV and driving gear 7A, be arranged on driven gear 8A in three grades of deceleration axis first V and driving gear 9A and the driven gear 10A be arranged on output shaft VI and output gear 11A and form the first gear transmission chain, transmit gear 5B and the driven gear 6B be arranged in two-stage speed-down axle second VII and driving gear 7B, be arranged on driven gear 8B in three grades of deceleration axis second VIII and driving gear 9B and the driven gear 10B be arranged on output shaft Ⅸ and output gear 11B and form the second gear transmission chain, one-level deceleration axis III two axial ends is provided with hydraulic pressure to disappear gap oil cylinder, the described hydraulic pressure gap oil cylinder pushing one-level deceleration axis III that disappears will produce displacement, two helical gear 5A on it and helical gear 5B produce trace and move axially, at this moment the gear of the first gear transmission chain, the gear of the second gear transmission chain just turns over an angle with contrary direction simultaneously, output gear 11 A and the output gear 11 B anti-flank of tooth that is meshed with two of tooth bar (or gear ring) is respectively made to be adjacent to and to eliminate gap, when servomotor band driven input shaft I rotates forward, the gear driving rack (or gear ring) of the first gear transmission chain is moved to the left (rotation) and decides drive motion, the gear of the second gear transmission chain disappears gap motion, when servomotor band driven input shaft I reverses, the gear of the first gear transmission chain and the gear function of the second gear transmission chain exchange thus make positive feed motion and backward feed motion realize gapless transmission, feeding hydraulic pressure disappear gap oil cylinder possess mechanical position limitation and location defencive function.Be arranged on the driving gear gear 9A in three grades of deceleration axis first V, the driving gear 9B be arranged in three grades of deceleration axis second VIII is shifting slide gear, two shifting slide gears are connected with corresponding shift fork positioner respectively, often overlap shift fork positioner and comprise the conversion fork 18 be connected with shifting slide gear, conversion fork 18 is fixedly connected with the piston 14 being separated oil cylinder 13 be arranged on casing 19; Conversion fork 18 one end is connected with the stroke lever 17 stretched out outside casing 19, and collision block 15 is equipped with in stroke lever 17 one end of stretching out outside casing 19, in the stroke of collision block 15, travel switch 16 is housed; Can be switched mutually with main motion by separation oil cylinder 13 and be separated, the action request of different plant equipment can be met, send signal by travel switch 16, separation oil cylinder 13 be possessed and combines and be separated recognition function.
Claims (1)
1. a Double-gear anti-backlash feed box, include casing (19), it is characterized in that: in described casing (19), be provided with the first driving gear (1) be arranged on power shaft (I), described first driving gear (1) is engaged with the first driven gear (2) be contained on power transmission shaft (II), described power transmission shaft (II) is provided with driven wheel (3), described driven wheel (3) is meshed with the deceleration gear (4) be contained on one-level deceleration axis (III), gear (5B) is transmitted in the first transmission gear (5A) and second described one-level deceleration axis (III) being provided with gear teeth rotation direction contrary, described first transmits gear (5A) and is arranged on the second driven gear (6A) in two-stage speed-down axle first (IV) and the second driving gear (7A), is arranged on the 3rd driven gear (8A) on three grades of deceleration axis first (V) and the 3rd driving gear (9A) and the 4th driven gear (10A) be arranged on output shaft (VI) and output gear (11A) and forms the first gear transmission chain, described second transmits gear (5B) and is arranged on the 5th driven gear (6B) in two-stage speed-down axle second (VII) and the 4th driving gear (7B), is arranged on the 6th driven gear (8B) on three grades of deceleration axis second (VIII) and the 5th driving gear (9B) and the 7th driven gear (10B) be arranged on output shaft (Ⅸ) and output gear (11B) and forms the second gear transmission chain, the axle head of described one-level deceleration axis (III) is provided with hydraulic pressure to disappear gap oil cylinder, be arranged on described 3rd driving gear (9A) on described three grades of deceleration axis first (V) and described 5th driving gear (9B) be arranged on described three grades of deceleration axis second (VIII) is shifting slide gear, described shifting slide gear is connected with corresponding shift fork positioner respectively, described shift fork positioner comprises the conversion fork (18) be connected with described shifting slide gear, and described conversion fork (18) is fixedly connected with the piston (14) being separated oil cylinder (13) be arranged on casing (19), described conversion fork (18) is connected with stretches out casing (19) stroke lever outward (17), and described stroke lever (17) stretches out casing (19) one end outward and collision block (15) is housed, and at described collision block (15), travel switch (16) is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310008390.2A CN103042422B (en) | 2013-01-10 | 2013-01-10 | Double-gear anti-backlash feed box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310008390.2A CN103042422B (en) | 2013-01-10 | 2013-01-10 | Double-gear anti-backlash feed box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103042422A CN103042422A (en) | 2013-04-17 |
| CN103042422B true CN103042422B (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310008390.2A Expired - Fee Related CN103042422B (en) | 2013-01-10 | 2013-01-10 | Double-gear anti-backlash feed box |
Country Status (1)
| Country | Link |
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| CN (1) | CN103042422B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753333B (en) * | 2013-11-28 | 2016-02-24 | 芜湖恒升重型机床股份有限公司 | The elimination backlash structure of gear drive |
| CN108019468A (en) * | 2018-01-15 | 2018-05-11 | 浙江陀曼精密机械有限公司 | Chain digital control gear hobbing machine double bevel gear backlash transmission device |
| CN108747191A (en) * | 2018-07-13 | 2018-11-06 | 苏州迈德焊接科技有限公司 | Double drive structure in all position automatic welding device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4331040A (en) * | 1980-04-21 | 1982-05-25 | Usm Corporation | Anti-backlash gearing |
| EP0505140A1 (en) * | 1991-03-19 | 1992-09-23 | Isel Co., Ltd. | Planetary reduction gear |
| CN1218812C (en) * | 2003-06-26 | 2005-09-14 | 上海磁悬浮交通发展有限公司 | Backlash eliminating driving mechanism for transverse motion of digitally controlled machine tool |
| CN2842099Y (en) * | 2005-10-28 | 2006-11-29 | 沈阳第一机床厂 | Hydraulic floating three-position oil cylinder gear-shift mechanism |
| CN201843955U (en) * | 2010-10-26 | 2011-05-25 | 山东和盛重工科技有限公司 | Multi-shaft transmission mechanism with stepless speed change |
| CN201953959U (en) * | 2010-12-23 | 2011-08-31 | 江苏新瑞重工科技有限公司 | Turntable gear box anti-backlash mechanism of numeric control gantry milling machine |
| CN102248432A (en) * | 2011-06-20 | 2011-11-23 | 沈机集团昆明机床股份有限公司 | Device for eliminating gear transmission gap of rotating table in dual motor drive manner |
| CN203141186U (en) * | 2013-01-10 | 2013-08-21 | 柳州正菱重型数控机床有限公司 | Double-gear anti-backlash feed box |
-
2013
- 2013-01-10 CN CN201310008390.2A patent/CN103042422B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN103042422A (en) | 2013-04-17 |
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| CF01 | Termination of patent right due to non-payment of annual fee |