CN201262223Y - Clearance-eliminating transmission case - Google Patents
Clearance-eliminating transmission case Download PDFInfo
- Publication number
- CN201262223Y CN201262223Y CNU2008201599481U CN200820159948U CN201262223Y CN 201262223 Y CN201262223 Y CN 201262223Y CN U2008201599481 U CNU2008201599481 U CN U2008201599481U CN 200820159948 U CN200820159948 U CN 200820159948U CN 201262223 Y CN201262223 Y CN 201262223Y
- Authority
- CN
- China
- Prior art keywords
- helical gear
- shaft
- propeller
- take
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Gear Transmission (AREA)
Abstract
The utility model relates to an anti-backlash transmission case, which is characterized in that the middle part of a first output transmission shaft is connected with a first helical gear which rotates rightwards; the middle part of a second output transmission shaft is connected with a second helical gear which rotates leftwards; a sixth helical gear and a fourth helical gear are mounted on a gear transmission shaft; a fifth helical gear is connected on the fourth helical gear; a motor and a planet reduction gearbox are mounted on a box body 1; a motor output shaft is connected with a third helical gear; the third helical gear is meshed with the fourth helical gear and the fifth helical gear; the gear part of a helical gear transmission shaft is meshed with the second helical gear; and the sixth helical gear is meshed with the first helical gear. The utility model has the advantages that the structure is simple, and transmission gears are reasonably arranged, so that the anti-backlash transmission case has a compact internal structure and saves the space; and meanwhile, through the reasonable utilization of an anti-backlash mechanism, the anti-backlash transmission case in the utility model has better backlash, an X axis transferred to a machining center of a digital planer type milling machine shows high positioning precision and repeatable positioning precision, and the machining precision of the machining center of the digital planer type milling machine is ensured.
Description
Technical field
The utility model relates to a kind of gap eliminating transmission case, is applicable to that specifically gantry mills the X-axis transmission of large-scale mobile machining centers such as machining center gap eliminating transmission case, belongs to the mechanical structure technical field.
Background technique
Along with the high speed development of China's mechanical industry, the especially development of heavy industry, more and more to the demand of large-scale gold machining equipment such as numerical control gantry mill machining center; Simultaneously the technical parameter of equipment is had higher requirement.For the such main equipment of numerical control gantry mill machining center, the stroke specification is big (the X-axis stroke is usually more than 8 meters) also, and ball screw or tooth bar transmission are adopted in the driving of general this long stroke.This dual mode respectively has pluses and minuses, in the ball screw transmission, need overcome the deformation effect that action of gravity produces leading screw; And in the tooth bar transmission, need overcome the influence of gear to transmission accuracy.
Have in the technology at oneself, in the solution of existing use tooth bar transmission, how to resolve the transmission accuracy problem of gear, be the significant problem of pendulum in face of each lathe manufacturer always.The crack engagement if the driving gear in the X-axis gear does not disappear; Also the do not disappear crack engagement of take-off (propeller) shaft wheel and rack, the gap is accumulated as the backlass of X-axis transmission, directly influence the Location accuracy and the repetitive positioning accuracy of numerical control gantry mill machining center X-axis, make the precision of numerical control gantry mill machining center complete machine not reach requirement.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, thereby provide a kind of gap eliminating transmission case, utilize the helical gear stable drive, be applicable to the heavy load transmission, characteristics such as the crack is easy disappear, to overlap the utilization of helical gear anti-backlash mechanism wherein more, and transmit by the crack that disappears of 3 groups of gears, the power moment of torsion of motor is delivered to the output drive gear axle that meshes with tooth bar, thereby drive the X-axis motion of numerical control gantry mill machining center, can reasonably eliminate the gap between gear-box internal gear and output drive gear and tooth bar, eliminate backlass, can improve Location accuracy and repetitive positioning accuracy.
The technological scheme that provides according to the utility model, a kind of gap eliminating transmission case, adopt first take-off (propeller) shaft and second take-off (propeller) shaft to be installed in the casing respectively, second bearing support is fastened on the casing, two tapered roller bearings are installed on first take-off (propeller) shaft, cover is arranged between the output gear of the tapered roller bearing and first take-off (propeller) shaft, and first lid is fastenedly connected on second bearing support; The clutch shaft bearing seat that is connected with the contact of tapered roller bearing outer rim is fastened on the casing; Feature is first helical gear that is connected with dextrorotation at the middle part of first take-off (propeller) shaft with the tensioner cover, and second take-off (propeller) shaft middle part is connected with the second left-handed helical gear with the tensioner cover, and two roller bearings are used to support the helical gear transmission shaft; Helical gear transmission shaft front end connects the 6th helical gear, the 3rd bearing support is fastenedly connected on casing, gland is connected on the 3rd bearing support, and be installed in disk spring on the axle by the screw force compresses, axle is connected with screw with spring seat, and spring seat will compress the force transmission of disk spring on the helical gear transmission shaft by thrust ball bearing; The 4th helical gear is connected on the helical gear transmission shaft with the tensioner cover, the helical gear transmission shaft is installed in the casing, spacer and the 5th helical gear are connected on the 4th helical gear, motor and planetary reduction box are installed on the casing 1, be connected with the 3rd helical gear by the deceleration rear output shaft, the 3rd helical gear and the 4th helical gear and the engagement of the 5th helical gear, the gear parts of helical gear transmission shaft and the engagement of second helical gear, the 6th helical gear and the engagement of first helical gear.
Position, space between described cover and the bearing support is equipped with seal ring.
The thread groove of the described first take-off (propeller) shaft bearing rear end is installed locking nut, and the installation pretightening force that provides of first take-off (propeller) shaft is provided; The rear end of take-off (propeller) shaft provides supporting force with tapered roller bearing.
Compared with the prior art the utility model has the following advantages:
The utility model layout driving gear simple and reasonable for structure position, make gap eliminating transmission case internal structure compactness, conserve space, pass through the reasonable utilization of anti-backlash mechanism simultaneously, make the utility model gap eliminating transmission case that backlass preferably be arranged, the X-axis that is delivered to the numerical control gantry mill machining center just shows as good Location accuracy and repetitive positioning accuracy, has ensured the machining accuracy of numerical control gantry mill machining center.
Simultaneously the utility model gap eliminating transmission case uses the helical gear transmission, also has stable drive in transmission process, noise and vibrate for a short time, and characteristics such as bearing capacity is strong are specially adapted to the use of large-sized numerical control equipment such as numerical control gantry mill machining center.
Description of drawings
Fig. 1 is that the general assembly of the utility model structure launches schematic representation.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 1, comprise casing 1, clutch shaft bearing seat 2, first take-off (propeller) shaft 3, tapered roller bearing 4, first helical gear 5, locking nut 6, tapered roller bearing 7, seal ring 8, cover 9, first lid 10, second bearing support 11, second helical gear 12, second take-off (propeller) shaft 13, hole back-up ring 14, the 3rd bearing support 15, first spacer ring 16, gland 17, disk spring 18, axle 19, spring seat 20, thrust ball bearing 21, motor 22, planetary reduction box 23, the 3rd helical gear 24, the 4th helical gear 25, spacer 26, the 5th helical gear 27, second spacer ring 28, helical gear transmission shaft 29, the 6th helical gear 30, roller bearing 31, second lid the 32 and the 3rd lid 33 etc.
This uses novel main employing first take-off (propeller) shaft 3 and second take-off (propeller) shaft 13 to be installed in respectively in the casing 1, second bearing support, 11 usefulness screws are fastenedly connected on casing 1, the tapered roller bearing 7 of two same model is installed on first take-off (propeller) shaft 3, the outer rim of tapered roller bearing 7 cooperates installation with the relevant position of second bearing support 11, cover 9 is arranged between the output gear of the tapered roller bearing 7 and first take-off (propeller) shaft 3, position, space between cover 9 and the bearing support 11 is equipped with seal ring 8, and will cover 10 usefulness screws and be fastenedly connected on second bearing support 11 to fix seal ring 8; The thread groove of rear end, first take-off (propeller) shaft, 3 Bearing Installation position is used to install locking nut 6, and the installation pretightening force that provides of first take-off (propeller) shaft 3 is provided; The rear end of first take-off (propeller) shaft 3 provides supporting force with tapered roller bearing 4, and the clutch shaft bearing seat 2 that is connected with the contact of tapered roller bearing 4 outer rims is fastenedly connected on casing 1 with screw equally; Be connected with first helical gear 5 of dextrorotation in addition with the tensioner cover at the middle part of first take-off (propeller) shaft 3.The installation firmly beforehand means of second take-off (propeller) shaft 13 is the same substantially with first take-off (propeller) shaft 3, and unique second take-off (propeller) shaft, 13 middle parts that are not both are connected with the second left-handed helical gear 12 with the tensioner cover.The roller bearing 31 of two same sizes is used to support helical gear transmission shaft 29; Be installed in the roller bearing 31 of front end, the 6th helical gear 30 by being mounted on helical gear transmission shaft 29 front portions with key and be connected the lid of second on the helical gear transmission shaft 29 32 with screw and fix interior steel ring, the shaft shoulder by casing 1 and fix outer rim with the 3rd lid 33 that screw is connected casing 1; Be installed in the roller bearing 31 of rear end, the shaft shoulder and hole by the 3rd bearing support 15 fix outer rim with back-up ring 14, fix interior steel ring by first spacer ring 16 and second spacer ring 28.The 3rd bearing support 15 usefulness screws are fastenedly connected on casing 1, gland 17 is connected on the 3rd bearing support 15 by screw, and be installed in axle 19 disk spring 18 by the screw force compresses, axle 19 is connected with spring seat 20 usefulness screws, and spring seat 20 will compress the force transmission of disk spring 18 on helical gear transmission shaft 29 by thrust ball bearing 21; The 4th helical gear 25 usefulness tensioner covers are connected on the helical gear transmission shaft 29, and gearing shaft 29 is installed in the casing, and spacer 26 and the 5th helical gear 27 usefulness screws are connected on the 4th helical gear 25.Motor 22 is installed on the casing 1 with planetary reduction box 23, be connected with the 3rd helical gear 24 by deceleration rear motor output shaft, the 3rd helical gear 24 and the 4th helical gear 25 and 27 engagements of the 5th helical gear, the gear parts of helical gear transmission shaft 29 and 12 engagements of second helical gear, the 6th helical gear 30 and 5 engagements of first helical gear.
Working principle of the present utility model and working procedure:
The 4th helical gear 25 has the identical modulus and the number of teeth with the 5th helical gear 27, and they mesh with the 3rd helical gear 24 simultaneously; By repair spacer 26, make its size be slightly larger than or be slightly less than the gap between the 4th helical gear 25 and the 5th helical gear 27, with screw be fastenedly connected back the 4th helical gear 25 and the 5th helical gear 27 respectively with the both sides engagement of the same tooth of the 3rd helical gear 24.So just reached the no gap transmission between the 3rd helical gear 24 and the 4th helical gear 25 and the 5th helical gear 27 these overall gears.When mounted,, on the screw force compresses disk spring 18, and, act at last on the helical gear transmission shaft 29, promote helical gear transmission shaft 29 and move forward by spring seat 20 and thrust ball bearing 21 with screw in compression gland 17; Because the gear parts of helical gear transmission shaft 29 and 12 engagements of first helical gear, the 6th helical gear 30 and 5 engagements of first helical gear, when gearing shaft 29 moves forward second helical gear 12 and 5 generations of first helical gear there is peripheral force, because second helical gear 12 and first helical gear 5 are respectively left-handed and dextrorotation, so suffered peripheral force makes second helical gear 12 and first helical gear 5 to the two-phase counter-rotation, drive first take-off (propeller) shaft 3 and second take-off (propeller) shaft 13 thus also towards the rotation of two opposite directions, then the output gear on take-off (propeller) shaft 3 and the take-off (propeller) shaft 13 respectively to both direction in meshing with tooth bar; So no matter motor positive and negative direction running, it is the transmission of no gap that one group of driving gear all can be arranged.The utility model is finished the crack transmission that disappears thus.
Claims (4)
1, a kind of gap eliminating transmission case, it mainly adopts first take-off (propeller) shaft (3) and second take-off (propeller) shaft (13) to be installed in respectively in the casing (1), second bearing support (11) is fastened on the casing (1), two tapered roller bearings (7) are installed on first take-off (propeller) shaft (3), cover (9) is arranged between the output gear of tapered roller bearing (7) and first take-off (propeller) shaft (3), and first lid (10) is fastened on second bearing support (11); The clutch shaft bearing seat (2) that is connected with the contact of tapered roller bearing (4) outer rim is fastened on the casing (1); It is characterized in that: connect first helical gear (5) at the middle part of first take-off (propeller) shaft (3), second take-off (propeller) shaft (13) middle part connects second helical gear (12), two roller bearings (31) are used to support helical gear transmission shaft (29), and gearing shaft (29) is installed in the casing; Helical gear transmission shaft (29) front end connects the 6th helical gear (30), disk spring (18) is installed on the axle (19), axle (19) is connected with spring seat (20), and spring seat (20) will compress the force transmission of disk spring (18) on helical gear transmission shaft (29) by thrust ball bearing (21); The 4th helical gear (25) is connected on the helical gear transmission shaft (29), the 5th helical gear (27) is connected on the 4th helical gear (25), motor (22) is installed on the casing (1) with planetary reduction box (23), motor output shaft is connected with the 3rd helical gear (24), the 3rd helical gear (24) and the 4th helical gear (25) and the 5th helical gear (27) engagement, the gear parts of helical gear transmission shaft (29) and second helical gear (12) engagement, the 6th helical gear (30) and first helical gear (5) engagement.
2, a kind of gap eliminating transmission case according to claim 1 is characterized in that the position, space between described cover (9) and the bearing support (11) is equipped with seal ring (8).
3, a kind of gap eliminating transmission case according to claim 1 is characterized in that the thread groove of described first take-off (propeller) shaft (5) bearing rear end is installed locking nut (6).
4, a kind of gap eliminating transmission case according to claim 1 is characterized in that described second helical gear (12) and first helical gear (5) are respectively left-handed and dextrorotation, and second helical gear (12) and first helical gear (5) are to the two-phase counter-rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201599481U CN201262223Y (en) | 2008-09-23 | 2008-09-23 | Clearance-eliminating transmission case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201599481U CN201262223Y (en) | 2008-09-23 | 2008-09-23 | Clearance-eliminating transmission case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262223Y true CN201262223Y (en) | 2009-06-24 |
Family
ID=40808696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201599481U Expired - Fee Related CN201262223Y (en) | 2008-09-23 | 2008-09-23 | Clearance-eliminating transmission case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201262223Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277500A (en) * | 2013-04-11 | 2013-09-04 | 宁波海天精工股份有限公司 | Gap eliminating method of gear transmission device |
| CN103953714A (en) * | 2014-05-12 | 2014-07-30 | 东莞华中科技大学制造工程研究院 | Gear rack clearance eliminating mechanism |
| CN104315111A (en) * | 2014-10-17 | 2015-01-28 | 株洲高精传动技术有限公司 | Gear transmission shaft device |
| CN105317984A (en) * | 2015-11-29 | 2016-02-10 | 綦江永跃齿轮有限公司 | Speed reducer having air cooling, buffering, vibration reducing and gap eliminating structures |
| CN105317985A (en) * | 2015-11-29 | 2016-02-10 | 綦江永跃齿轮有限公司 | Speed reducer with air cooler and backlash eliminating structure |
| CN105333066A (en) * | 2015-11-29 | 2016-02-17 | 綦江永跃齿轮有限公司 | Speed reducer with anti-backlash structure |
| CN105370806A (en) * | 2015-11-29 | 2016-03-02 | 綦江永跃齿轮有限公司 | Reduction gear with damping and clearance eliminating structure |
| CN108708939A (en) * | 2018-06-21 | 2018-10-26 | 广州启帆工业机器人有限公司 | A kind of clearance elimination gear case |
| CN111730581A (en) * | 2020-06-10 | 2020-10-02 | 德屹智能科技(扬州)有限公司 | Swing driving device and processing equipment |
-
2008
- 2008-09-23 CN CNU2008201599481U patent/CN201262223Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277500A (en) * | 2013-04-11 | 2013-09-04 | 宁波海天精工股份有限公司 | Gap eliminating method of gear transmission device |
| CN103277500B (en) * | 2013-04-11 | 2015-12-09 | 宁波海天精工股份有限公司 | A kind of gap adjusting method that disappears of gear drive |
| CN103953714A (en) * | 2014-05-12 | 2014-07-30 | 东莞华中科技大学制造工程研究院 | Gear rack clearance eliminating mechanism |
| CN103953714B (en) * | 2014-05-12 | 2016-08-17 | 广东华中科技大学工业技术研究院 | Gear rack anti-backlash mechanism |
| CN104315111A (en) * | 2014-10-17 | 2015-01-28 | 株洲高精传动技术有限公司 | Gear transmission shaft device |
| CN105317984A (en) * | 2015-11-29 | 2016-02-10 | 綦江永跃齿轮有限公司 | Speed reducer having air cooling, buffering, vibration reducing and gap eliminating structures |
| CN105317985A (en) * | 2015-11-29 | 2016-02-10 | 綦江永跃齿轮有限公司 | Speed reducer with air cooler and backlash eliminating structure |
| CN105333066A (en) * | 2015-11-29 | 2016-02-17 | 綦江永跃齿轮有限公司 | Speed reducer with anti-backlash structure |
| CN105370806A (en) * | 2015-11-29 | 2016-03-02 | 綦江永跃齿轮有限公司 | Reduction gear with damping and clearance eliminating structure |
| CN108708939A (en) * | 2018-06-21 | 2018-10-26 | 广州启帆工业机器人有限公司 | A kind of clearance elimination gear case |
| CN108708939B (en) * | 2018-06-21 | 2024-05-31 | 广州启帆工业机器人有限公司 | Anti-backlash gear box |
| CN111730581A (en) * | 2020-06-10 | 2020-10-02 | 德屹智能科技(扬州)有限公司 | Swing driving device and processing equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201262223Y (en) | Clearance-eliminating transmission case | |
| CN101382192A (en) | Gap eliminating transmission case | |
| CN102029531A (en) | Swivel table driving device with double worm and gear backlash mechanisms | |
| CN103671743A (en) | Planetary and harmonic combined speed reducer | |
| CN202203345U (en) | Compound precision cycloid decelerator | |
| CN101683719B (en) | Gapless transmission device of numerical control contour grinder | |
| CN205101472U (en) | Tertiary reduction gear of electric motor car | |
| CN100497994C (en) | Planetary gear box specially for great power bidirectional submersed three-flow pump | |
| CN201696552U (en) | Anti-backlash reduction gearbox | |
| CN102478098A (en) | Compact type zero side clearance parallel-shaft gear speed reducer | |
| CN203809622U (en) | Second-level hard gear face cycloid steel ball planetary reducer | |
| CN102062173A (en) | Spiral wheel-spiral bevel gear retarder | |
| CN201348024Y (en) | Compound small teeth difference reducing gear | |
| CN217944895U (en) | Novel steering wheel | |
| CN209925523U (en) | Planetary cycloidal speed reducer for light robot | |
| CN104061295A (en) | Friction planetary reducer | |
| CN115750686A (en) | High-rigidity large-load precise speed reduction closed-loop transmission device | |
| CN214946249U (en) | Driving assembly connecting structure | |
| CN211082715U (en) | High-torque worm gear reducer | |
| CN102003495A (en) | Small deviated bevel gear three-level transmission speed reducer | |
| CN208471417U (en) | A kind of built-in promotion winding plant | |
| CN201606457U (en) | Differential planetary speed-reducer | |
| CN107202099B (en) | Coaxial bidirectional output positioning transmission device | |
| CN100472091C (en) | Crank pingear transmission | |
| CN220378799U (en) | Cone worm speed reducer with right-angle output |
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 |
Granted publication date: 20090624 Termination date: 20150923 |
|
| EXPY | Termination of patent right or utility model |