CN109707820B - Lathe numerical control revolving stage oscillating tooth transmission that can clear up - Google Patents
Lathe numerical control revolving stage oscillating tooth transmission that can clear up Download PDFInfo
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- CN109707820B CN109707820B CN201811653109.XA CN201811653109A CN109707820B CN 109707820 B CN109707820 B CN 109707820B CN 201811653109 A CN201811653109 A CN 201811653109A CN 109707820 B CN109707820 B CN 109707820B
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Abstract
The utility model provides a lathe numerical control revolving stage oscillating tooth transmission that can crack disappears, includes output end cover, first shock wave internal gear, motion part assembly, second shock wave internal gear and second end cover, first shock wave internal gear and the laminating setting of second shock wave internal gear, one side of first shock wave internal gear is equipped with first end cover, one side of second shock wave internal gear is equipped with the second end cover, be equipped with the motion part assembly in the inner chamber of first shock wave internal gear and second shock wave internal gear, one side of motion part assembly orientation second end cover is the input, be equipped with first bearing between the output of motion part and the first end cover, be equipped with the output end cover on the terminal surface of output. The first shock wave inner gear and the second shock wave inner gear are arranged, and the moving part assembly is arranged in the first shock wave inner gear and the second shock wave inner gear, so that the moving clearance of the transmission mechanism can be eliminated when the transmission mechanism moves, and the running precision of the numerical control rotary table of the machine tool is improved.
Description
Technical Field
The invention belongs to the technical field of machine tool rotary table mechanisms, and particularly relates to a movable tooth transmission device of a machine tool numerical control rotary table, which can eliminate gaps.
Background
The precision turntable is used as a core component of a multi-axis numerical control machine tool and an industrial machine and has wide market application, and the traditional numerical control turntable mostly adopts a worm gear reducer, a harmonic reduction reducer, an RV reducer and the like as a speed reduction transmission mechanism. The worm gear reducer and the gear reducer are easy to wear in the use process, so that the indexing precision is reduced, and the requirement of a high-precision machine tool is difficult to meet; the harmonic reducer and the RV reducer have superior quality and reliable functions, but are monopolized abroad due to the production technology and have high price.
The oscillating tooth transmission is a novel transmission mechanism as a Chinese original technology, and a typical oscillating tooth transmission structure comprises: shock internal gears, shock discs, oscillating tooth rollers, power input shafts, power output shafts and the like. The movable tooth transmission belongs to a multi-tooth meshed differential tooth transmission and has the advantages of compact structure, good structural manufacturability, high bearing capacity, large transmission ratio and the like. However, due to the existence of errors in the manufacturing and assembling processes and the abrasion of a meshing pair in the transmission process, an inevitable meshing gap exists in a typical oscillating tooth structure, and the existence of the meshing gap can cause vibration and impact in the transmission process to influence the rotation performance of the oscillating tooth structure, so that the application of the oscillating tooth transmission on a numerical control turntable is limited.
The mechanical design journal, volume 33, issue 7, phase 17-20, also entitled "automatic backlash elimination pendulum rod oscillating tooth transmission research", processes the traditional shock wave disk and roller cylindrical surface into conical surface, increases axial load on the shock wave disk, makes the shock wave disk axially displace, limits the radial movement of the roller, eliminates the transmission backlash, but increases transmission load when eliminating the transmission backlash, and increases the wear of the meshing pair.
Patent CN108194610A "a swing rod oscillating tooth speed reducer with anti-backlash structure" changes a roller into a roller set composed of two rollers, and adds an elastic element between the two rollers in the same set, so as to eliminate the transmission backlash, but the structure is complex, and the radial size of the mechanism is increased.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a movable tooth transmission device of a numerical control rotary table of a machine tool, which can eliminate a clearance.
The invention is realized by the following technical scheme:
a movable tooth transmission device of a numerical control rotary table of a machine tool, which can eliminate gaps, comprises an output end cover, a first shock wave internal gear, a moving part assembly, a second shock wave internal gear and a second end cover, the first shock wave inner gear and the second shock wave inner gear are jointed, one side of the first shock wave inner gear is provided with a first end cover, a second end cover is arranged on one side of the second shock wave internal gear, a moving part assembly is arranged in the inner cavities of the first shock wave internal gear and the second shock wave internal gear, one side of the moving part assembly facing the second end cover is an input end, one side of the moving part assembly facing the first end cover is an output end, and a second bearing is arranged between the input end of the moving part and the second end cover, a first bearing is arranged between the output end of the moving part and the first end cover, and an output end cover is arranged on the end face of the output end. The first shock wave inner gear and the second shock wave inner gear are arranged, and the moving part assembly is arranged in the first shock wave inner gear and the second shock wave inner gear, so that the moving clearance of the transmission mechanism can be eliminated when the transmission mechanism moves, and the running precision of the numerical control rotary table of the machine tool is improved.
The moving part assembly comprises an input shaft, a first roller supporting frame, a first active gear disc, a second roller supporting frame, a second active gear disc, a third roller supporting frame, a first active gear roller, a second active gear roller, a first connecting pin and a second connecting pin, wherein the input shaft is sequentially sleeved with the first roller supporting frame, the first active gear disc, the second roller supporting frame, the second active gear disc and the third roller supporting frame from an input end to an output end, a second connecting pin and the second active gear roller are arranged between the first roller supporting frame and the second roller supporting frame, the second connecting pin and the second active gear roller are alternately arranged, a first connecting pin and a first active gear roller are arranged between the second roller supporting frame and the third roller supporting frame, and the first connecting pin and the first active gear roller are alternately arranged. The moving part assembly is arranged, so that gaps can be eliminated between the first laser disc and the second laser disc and between the first roller supporting frame and the third roller supporting frame under the action of the first oscillating tooth roller and the second oscillating tooth roller during operation, zero-gap transmission of the rotary table is realized, and the working requirements of the rotary table on high precision, high rigidity and high stability are met.
The first connecting pin and the second connecting pin are arranged oppositely. First locating pin sets up with the second locating pin is relative, can be jointly with first roller support frame and third roller support frame location on second roller support frame, ensures roller support frame's steadiness.
The first roller support frame, the second roller support frame and the third roller support frame are fixed through a first connecting bolt. The three roller support frames are fixed together by adopting the connecting bolts, so that the roller support frames move synchronously, and the rotation precision and the transmission quality are improved.
The first connecting bolt is sleeved with a supporting sleeve, and the supporting sleeve is respectively positioned between the first roller supporting frame and the second roller supporting frame and between the second roller supporting frame and the third roller supporting frame. Set up and support the cover, can form effective support between each roller support frame, avoid taking place to warp when roller support frame locks, influence transmission precision.
The input shaft is sleeved with a shaft sleeve, and the shaft sleeve is arranged between the first shock wave disc and the second shock wave disc.
And a torsion spring is arranged outside the shaft sleeve. The elastic element torsional spring is arranged between the first shock wave disc and the second shock wave disc, so that the radial size of the rotating mechanism is not occupied, and the compactness of the whole structure is facilitated.
The phase difference between the first shock wave internal gear and the second shock wave internal gear is less than 180 degrees. The installation phase difference of the first shock wave inner gear and the second shock wave inner gear is set to be 180 degrees, radial forces generated in the rotating process are mutually offset, and the working load of parts is reduced.
The first end cover, the first shock wave inner gear and the second shock wave inner gear are fastened together through a second connecting bolt.
The first end cover is provided with a first bearing end cover, and the second end cover is provided with a second bearing end cover. Set up first bearing end cover and second bearing end cover on first end cover and second end cover respectively, can avoid dust etc. to enter into drive mechanism's inside, ensure drive mechanism's stability and the operation precision of operation.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a movable tooth transmission device of a machine tool numerical control turntable capable of eliminating gaps, which is provided with a first shock wave internal gear and a second shock wave internal gear, and a moving part assembly is arranged in the first shock wave internal gear and the second shock wave internal gear, so that the movable gaps can be eliminated when a transmission mechanism moves, and the running precision of the machine tool numerical control turntable is improved;
2. the invention relates to a machine tool numerical control turntable oscillating tooth transmission device capable of eliminating gaps, which is provided with a moving part assembly, wherein gaps can be eliminated between a first oscillating roller and a second oscillating roller and between a first roller support frame and a third roller support frame under the action of the first oscillating roller and the second oscillating roller during operation, zero-gap transmission of rotation of a turntable is realized, and the working requirements of high precision, high rigidity and high stability of the turntable are met;
3. according to the movable tooth transmission device of the numerical control rotary table of the machine tool, which can eliminate the clearance, the first positioning pin and the second positioning pin are arranged oppositely, so that the first roller supporting frame and the third roller supporting frame can be positioned on the second roller supporting frame together, and the stability of the roller supporting frame is ensured;
4. according to the movable tooth transmission device of the numerical control rotary table of the machine tool, which is capable of eliminating the clearance, the supporting sleeve is arranged, so that effective support can be formed among the roller supporting frames, and the phenomenon that the transmission precision is influenced due to deformation when the roller supporting frames are locked is avoided;
5. according to the movable tooth transmission device of the numerical control rotary table of the machine tool, which can eliminate the gap, the elastic element torsion spring is arranged between the first shock wave plate and the second shock wave plate, so that the radial size of the rotating mechanism is not occupied, and the compactness of the whole structure is facilitated;
6. according to the movable tooth transmission device of the numerical control rotary table of the machine tool, which can eliminate the gap, the installation phase difference of the first shock wave inner gear and the second shock wave inner gear is set to be 180 degrees, radial forces generated in the rotating process are mutually offset, and the working load of parts is reduced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic overall exploded view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a rear view of the present invention;
FIG. 4 is a schematic side view of the present invention;
FIG. 5 is a schematic view of the cross-sectional structure A-A of FIG. 2 according to the present invention;
FIG. 6 is a schematic diagram of a front view exploded view of the moving part assembly of the present invention;
FIG. 7 is a rear perspective exploded view of the moving part assembly of the present invention;
FIG. 8 is a schematic sectional view taken along line A-A of the moving element of the present invention;
FIG. 9 is a schematic view of the moving element of the present invention in cross-section along line B-B;
FIG. 10 is a schematic rear view of embodiment 2 of the present invention;
FIG. 11 is a schematic side view of the structure of embodiment 2 of the present invention;
FIG. 12 is a schematic view of the cross-sectional C-C configuration of FIG. 10 of the present invention;
FIG. 13 is a schematic view of the cross-sectional view D-D of FIG. 10 of the present invention;
fig. 14 is a schematic view of the overall explosion structure of embodiment 2 of the present invention;
FIG. 15 is a rear view exploded perspective view of a moving part assembly according to embodiment 2 of the present invention;
FIG. 16 is a schematic view of a roller cage construction of the present invention;
FIG. 17 is a front view of the roller cage of the present invention;
FIG. 18 is a schematic view of the cross-sectional view E-E of FIG. 17 in accordance with the present invention;
FIG. 19 is a schematic view of a turntable bearing arrangement of the present invention;
FIG. 20 is a schematic view of the cross-sectional F-F configuration of FIG. 19 in accordance with the present invention;
wherein, 1, an output end cover, 2, a first bearing rolling body, 3, a first end cover, 4, a first shock wave internal gear, 5, a moving component assembly, 6, a second shock wave internal gear, 7, a second end cover, 8, a second bearing end cover, 9, a positioning pin, 10, a first bearing end cover, 11, an input shaft, 12, a second bearing rolling body, 13, a first roller support frame, 14, a first shock wave disc, 15, a second roller support frame, 16, a second shock wave disc, 17, a first rolling bearing, 18, a third roller support frame, 19, a third bearing rolling body, 20, a first oscillating tooth roller, 21, a first connecting pin, 22, a second connecting pin, 23, a second oscillating tooth roller, 24, a second rolling bearing, 25, a shaft sleeve, 26, a torsion spring, 27, a support sleeve, 28, a first connecting bolt, 29, a second connecting bolt, 30, a bearing, 151 and a frame body, 152. inner hole, 153, roller fixing hole, 154, pin fixing hole, 301, upper turntable, 302, movable turntable, 303, turntable roller, 304 and lower turntable.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
example 1:
as shown in fig. 1-4, a gap-eliminating movable tooth transmission device of a numerical control rotary table of a machine tool comprises an output end cover 1, a first end cover 3, a first shock wave internal gear 4, a moving part assembly 5, a second shock wave internal gear 6 and a second end cover 7, wherein the first shock wave internal gear 4 and the second shock wave internal gear 6 are attached, the first end cover 3 is arranged on one side of the first shock wave internal gear 4, the second end cover 7 is arranged on one side of the second shock wave internal gear 6, the moving part assembly 5 is arranged in an inner cavity of the first shock wave internal gear 4 and the second shock wave internal gear 6, one side of the moving part assembly 5 facing the second end cover 7 is an input end, one side of the moving part assembly 5 facing the first end cover 3 is an output end, a second rolling bearing 24 is arranged between the input end of the moving part and the second end cover 7, a first rolling bearing 17 is arranged between the output end of the moving part and the first end cover 3, and an output end cover 1 is arranged on the end face of the output end. The first shock wave internal gear 4 and the second shock wave internal gear 6 are arranged, and the moving part assembly 5 is arranged in the first shock wave internal gear and the second shock wave internal gear, so that the moving clearance of the transmission mechanism can be eliminated when the transmission mechanism moves, and the running precision of the numerical control rotary table of the machine tool is improved.
As shown in fig. 5-9, the moving part assembly 5 includes an input shaft 11, a first roller support frame 2, a first swash plate 14, a second roller support frame 15, a second swash plate 16, a third roller support frame 18, a first oscillating roller 20, a second oscillating roller 23, a first connecting pin 17 and a second connecting pin 22, the input shaft 11 is sequentially sleeved with the first roller support frame 2, the first swash plate 14, the second roller support frame 15, the second swash plate 16 and the third roller support frame 18 from an input end to an output end, the second connecting pin 22 and the second oscillating roller 23 are disposed between the first roller support frame 2 and the second roller support frame 15,
the second connecting pins 22 and the second oscillating tooth rollers 23 are alternately arranged, the first connecting pins 17 and the first oscillating tooth rollers 20 are arranged between the second roller support frame 15 and the third roller support frame 18, and the first connecting pins 17 and the first oscillating tooth rollers 20 are alternately arranged. The moving part assembly 5 is arranged, so that gaps between the first laser disc 14 and the second laser disc 16 and between the first roller support frame 2, the second roller support frame 15 and the third roller support frame 18 can be eliminated under the action of the first oscillating tooth roller 20 and the second oscillating tooth roller 23 during operation, zero-gap transmission of the rotation of the rotary table is realized, and the working requirements of the rotary table on high precision, high rigidity and high stability are met
The first connecting pin 17 is disposed opposite to the second connecting pin 22. The first locating pin 9 and the second locating pin 9 are arranged oppositely, the first roller support frame 2 and the third roller support frame 18 can be located on the second roller support frame 15 together, and stability of the roller support frames is guaranteed.
The first roller support frame 2, the second roller support frame 15 and the third roller support frame 18 are fixed by a first connecting bolt 28. The three roller support frames are fixed together by adopting the connecting bolts, so that the roller support frames move synchronously, and the rotation precision and the transmission quality are improved.
The first connecting bolt 28 is sleeved with a supporting sleeve 27, and the supporting sleeve 27 is respectively located between the first roller supporting frame 2 and the second roller supporting frame 15 and between the second roller supporting frame 15 and the third roller supporting frame 18. Set up and support cover 27, can form effective support between each roller support frame, avoid taking place to warp when roller support frame locks, influence transmission precision.
The input shaft 11 is sleeved with a shaft sleeve 25, and the shaft sleeve 25 is arranged between the first laser disc 14 and the second laser disc 16.
The shaft sleeve 25 is externally provided with a torsion spring 26. The elastic element torsion spring 26 is arranged between the first laser disc 14 and the second laser disc 16, so that the radial size of the rotating mechanism is not occupied, and the compactness of the whole structure is facilitated.
The phase difference between the first shock wave inner gear 4 and the second shock wave inner gear 6 is less than 180 degrees. The installation phase difference of the first shock wave inner gear 4 and the second shock wave inner gear 6 is set to be 180 degrees, radial forces generated in the rotating process are mutually offset, and the working load of parts is reduced.
The first end cover 3, the first shock wave inner gear 4 and the second shock wave inner gear 6 are fastened together through a second connecting bolt 29.
The first end cover 3 is provided with a first rolling bearing 17 and an end cover 10, and the second end cover 7 is provided with a second rolling bearing 24 and an end cover 8. The first end cover 3 and the second end cover 7 are respectively provided with the first rolling bearing 17 end cover 10 and the second rolling bearing 24 end cover 8, so that dust and the like can be prevented from entering the transmission mechanism, and the running stability and running precision of the transmission mechanism are ensured.
Example 2:
as shown in fig. 10 to 15, in addition to embodiment 1, the rolling elements 2 of the first rolling bearing 17, the rolling elements 12 of the second rolling bearing 24, and the rolling elements 19 of the third rolling bearing in embodiment 1 are removed and replaced with a turntable bearing 30 provided at an end portion of the transmission.
As shown in fig. 16-18, the roller support frame includes a frame body 151, an inner bore 152 is provided in the center of the frame body 151,
be equipped with round pin fixed orifices 154 on the support body 151, round pin fixed orifices 154 is equipped with a plurality ofly, round pin fixed orifices 154 circumference equipartition on support body 151, two be equipped with roller fixed orifices 153 between the round pin fixed orifices 154, the rod fixed orifices is rectangular hole, and the first end setting in rectangular hole is on support body 151, and the other end runs through with the outer circumference of support body 151 to the outer circumference extension of support body 151. The rod fixing hole is made to penetrate through the outer circumference of the frame body 151, so that the workpiece can be conveniently machined, and meanwhile, the fit clearance between the first oscillating tooth roller 20 and the second oscillating tooth roller 23 can be reduced, so that the operation precision of the oscillating tooth transmission device is higher.
As shown in fig. 19 to 20, the turntable bearing 30 includes an upper turntable 301, a movable turntable 302, a turntable roller 303 and a lower turntable 304, the upper turntable 301 and the lower turntable 304 are attached to each other, a rectangular groove is formed between the upper turntable 301 and the lower turntable 304, the movable turntable 302 is arranged in the rectangular groove, the turntable roller 303 is arranged between the movable turntable 302 and the turntable roller 303, and the turntable bearing 30 is adopted, so that the gap inside the transmission device can be further reduced, and the rotation precision of the transmission device is higher.
The above-described embodiment is only one embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be easily made based on the application and principle of the present invention disclosed in the present application, and the present invention is not limited to the method described in the above-described embodiment of the present invention, so that the above-described embodiment is only preferred, and not restrictive.
Claims (6)
1. A movable tooth transmission device of a numerical control rotary table of a machine tool, which can eliminate gaps, is characterized by comprising an output end cover, a first shock wave internal gear, a moving part assembly, a second shock wave internal gear and a second end cover, the first shock wave inner gear and the second shock wave inner gear are jointed, one side of the first shock wave inner gear is provided with a first end cover, a second end cover is arranged on one side of the second shock wave internal gear, a moving part assembly is arranged in the inner cavities of the first shock wave internal gear and the second shock wave internal gear, one side of the moving part assembly facing the second end cover is an input end, one side of the moving part assembly facing the first end cover is an output end, a second bearing is arranged between the input end of the moving part and the second end cover, a first bearing is arranged between the output end of the moving part and the first end cover, and an output end cover is arranged on the end face of the output end; the moving part assembly comprises an input shaft, a first roller supporting frame, a first active wave disc, a second roller supporting frame, a second active wave disc, a third roller supporting frame, a first active tooth roller, a second active tooth roller, a first connecting pin and a second connecting pin, wherein the input shaft is sequentially sleeved with the first roller supporting frame, the first active wave disc, the second roller supporting frame, the second active wave disc and the third roller supporting frame from the input end to the output end, a second connecting pin and the second active tooth roller are arranged between the first roller supporting frame and the second roller supporting frame, the second connecting pin and the second active tooth roller are alternately arranged, a first connecting pin and a first active tooth roller are arranged between the second roller supporting frame and the third roller supporting frame, the first connecting pin and the first active tooth roller are alternately arranged, the first connecting pin and the second connecting pin are oppositely arranged, the first roller supporting frame, the second roller, The second roller support frame and the third roller support frame are fixed through a first connecting bolt; the first connecting bolt is sleeved with a supporting sleeve, and the supporting sleeve is respectively positioned between the first roller supporting frame and the second roller supporting frame and between the second roller supporting frame and the third roller supporting frame.
2. The backlash-eliminating movable tooth transmission device for the numerical control rotary table of a machine tool as claimed in claim 1, wherein a shaft sleeve is sleeved on the input shaft and is arranged between the first shock wave plate and the second shock wave plate.
3. The backlash-eliminating transmission device for the numerically controlled rotary table of a machine tool as claimed in claim 2, wherein a torsion spring is provided outside the shaft sleeve.
4. The numerical control rotary table oscillating tooth transmission device of the machine tool capable of eliminating the gap as claimed in claim 1, wherein the phase difference between the first shock wave internal gear and the second shock wave internal gear is less than 180 degrees.
5. The backlash-eliminating movable tooth transmission device for the numerical control rotary table of a machine tool as claimed in claim 1, wherein the first end cover, the first shock wave internal gear and the second shock wave internal gear are fastened together by a second connecting bolt.
6. The backlash-eliminating transmission device for the numerically controlled rotary table of a machine tool as claimed in claim 1, wherein said first end cap is provided with a first bearing end cap, and said second end cap is provided with a second bearing end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653109.XA CN109707820B (en) | 2018-12-29 | 2018-12-29 | Lathe numerical control revolving stage oscillating tooth transmission that can clear up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653109.XA CN109707820B (en) | 2018-12-29 | 2018-12-29 | Lathe numerical control revolving stage oscillating tooth transmission that can clear up |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109707820A CN109707820A (en) | 2019-05-03 |
| CN109707820B true CN109707820B (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811653109.XA Active CN109707820B (en) | 2018-12-29 | 2018-12-29 | Lathe numerical control revolving stage oscillating tooth transmission that can clear up |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2284883Y (en) * | 1996-07-12 | 1998-06-24 | 陈智 | Full rolling moving gear |
| CN102312960A (en) * | 2011-08-29 | 2012-01-11 | 浙江恒丰泰减速机制造有限公司 | Precision oscillating tooth transmission reducer |
| JP5537516B2 (en) * | 2011-09-02 | 2014-07-02 | 住友重機械工業株式会社 | Eccentric oscillation type speed reducer |
| JP2015055343A (en) * | 2013-09-13 | 2015-03-23 | Ntn株式会社 | In-wheel motor drive unit |
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2018
- 2018-12-29 CN CN201811653109.XA patent/CN109707820B/en active Active
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