CN106363252B - A kind of gear-hobbing clamp for the multiple bull gear parts of clamping - Google Patents
A kind of gear-hobbing clamp for the multiple bull gear parts of clamping Download PDFInfo
- Publication number
- CN106363252B CN106363252B CN201610963702.9A CN201610963702A CN106363252B CN 106363252 B CN106363252 B CN 106363252B CN 201610963702 A CN201610963702 A CN 201610963702A CN 106363252 B CN106363252 B CN 106363252B
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- China
- Prior art keywords
- clamping
- positioning disk
- gear
- cavity
- center bridge
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
Abstract
The invention discloses a kind of gear-hobbing clamp for the multiple bull gear parts of clamping, wherein, including：Support base, expansion sleeve, at least one positioning disk, several centering clamping parts and drive mechanism, the expansion sleeve are movably arranged on the support base；The positioning disk sleeve is located on the expansion sleeve, the positioning disk includes several cavitys, several first openings and several second openings, the centering clamping part includes the first push rod, center bridge, the second push rod and supporting rod, the center bridge is articulated in the cavity, the center bridge may pass through the described first periphery stretching being open to the positioning disk, the centering clamping part also includes expansion loop, and the expansion loop may pass through the described second periphery stretching being open to the positioning disk；So that the present invention can be achieved multiple bull gears and simultaneously clamp on, centering precision is high, clamping workpiece is convenient and swift, can improve Gear Processing precision.
Description
Technical field
The present invention relates to clamp art, and in particular to a kind of gear-hobbing clamp for the multiple bull gear parts of clamping.
Background technology
Application of the gear in machine driving and whole mechanical field is extremely extensive, is indispensable in many plant equipment
Structure, in the life-span of the processing precision direct influence mechanical transmission mechanism of gear, gear hobbing process method is common Gear Processing side
Formula, and gear-hobbing clamp during Gear Processing has a great impact to Gear Processing precision, the gear hobbing folder of traditional bull gear part
It is poor to the centering precision of bull gear part to have, extremely difficult during clamping workpiece, it is difficult to realize that multiple bull gears simultaneously clamp on, workpiece
Clamping it is convenient, fast, accurate, become reduce bull gear processing cost an important factor for, therefore be badly in need of development one kind can be real
Existing multiple bull gears simultaneously clamp on, and centering precision is high, clamping workpiece is convenient and swift, can improve Gear Processing precision is used to filling
Press from both sides the gear-hobbing clamp of multiple bull gear parts.
The content of the invention
In view of this, the present invention provides a kind of achievable multiple bull gears and simultaneously clamped on, and centering precision is high, clamping workpiece side
Just the gear-hobbing clamp for the multiple bull gear parts of clamping quick, that Gear Processing precision can be improved.
To achieve the above object, the present invention provides following technical scheme：
A kind of gear-hobbing clamp for the multiple bull gear parts of clamping, wherein, including：It is support base, expansion sleeve, at least one
Positioning disk, several centering clamping parts and drive mechanism,
The support base is provided with lower locating piece；
The expansion sleeve is movably arranged on the support base；
The positioning disk sleeve is located on the expansion sleeve, and the positioning disk includes several cavitys, several first openings
With several the second openings, first opening is connected with the cavity, and first opening with outside the positioning disk
Side face mutually runs through；Second opening is connected with the cavity, and second opening and the outer peripheral face phase of the positioning disk
Run through；
The centering clamping part includes the first push rod, center bridge, the second push rod and supporting rod, and the center bridge is articulated in
In the cavity, the center bridge may pass through the described first periphery stretching being open to the positioning disk, and first push rod is lived
It is dynamic to be arranged in the positioning disk, and extend into the cavity, and can keep out on the center bridge；The supporting rod pivot
It is connected in the cavity, second push rod is movably arranged in the positioning disk, and is extended into the cavity, and can be supported
Gear is on the supporting rod；The centering clamping part also includes expansion loop, and the expansion loop is placed in the cavity, and can
It is in contact with the center bridge and the supporting rod, the expansion loop may pass through second periphery being open to the positioning disk
Stretch out；
The drive mechanism is fixedly installed on gear-hobbing machine, and is connected with the expansion sleeve.
Further, the center bridge is articulated in the cavity by first axle, and the centering end of the center bridge can be worn
The described first periphery stretching being open to the positioning disk is crossed, first push rod can be kept out on the first inclined-plane of the center bridge
On.
Further, the supporting rod is articulated in the cavity by the second axle, and second push rod can be kept out
On second inclined-plane of the supporting rod.
Further, the expansion loop is located at the second projection of the first raised and described positioning disk of the positioning disk
Between, and can keep out in the first groove of the center bridge, and the bare terminal end in the supporting rod can be kept out.
Further, the positioning disk also includes the first pilot hole and the second pilot hole, and the first push rod activity is set
Put in the first pilot hole, second push rod is movably arranged in the second pilot hole.
Further, there is clamping stagnation end on the center bridge, there is clamping stagnation groove, clamping stagnation end position on the supporting rod
In the side of the clamping stagnation groove.
Further, the expansion loop includes the piece that rises that several are sequentially connected, and open slot is provided with the piece that rises.
Further, in addition to axle, gland and upper compact heap, the gland are set on axle, the upper compact heap it is upper
Keep out on the lug of gland end face.
Further, the drive mechanism is connected by axle with the expansion sleeve.
Further, in addition to nut, the nut are arranged on the upper end of axle, and the lower surface compression institute of the nut
State the upper surface of gland.
It can be seen from the above technical scheme that it is an advantage of the invention that：
Multiple bull gears can be achieved to simultaneously clamp on, centering precision is high, clamping workpiece is convenient and swift, can Automatic-clamping, greatly
The clamping time for shortening workpiece, improve work rate, improve Gear Processing precision, during bull gear clamping, positioning disk is to tooth
Circle endoporus first carries out coarse positioning, then carries out fine positioning and clamping by centering clamping part, this coarse positioning and fine positioning it is same
Shi Yingyong, positioning precision is improved, more improves clamping efficiency.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is the sectional view of the present invention.
Fig. 2 is the lateral partial structurtes sectional view of the present invention.
Fig. 3 is the lateral partial structurtes sectional view of the positioning disk of the present invention.
Fig. 4 is the structural representation of the center bridge of the present invention.
Fig. 5 is the structural representation of the supporting rod of the present invention.
Fig. 6 is the sectional view of the expansion loop of the present invention.
In figure mark for：
1 be support base, 2 be lower locating piece, 3 be positioning disk, 31 be cavity, 32 be it is first raised, 33 be it is second raised, 34
It is the second opening for the first opening, 35,36 be the first pilot hole, 37 be the second pilot hole, 4 be centering clamping part, 41 is the
One push rod, 42 be center bridge, 421 be centering end, 422 be the first inclined-plane, 423 be the first axis hole, 424 be the first groove, 425 be
Clamping stagnation end, 43 be supporting rod, 431 be bare terminal end, 432 be clamping stagnation groove, 433 be the second axis hole, 434 be the second inclined-plane, 44 be
Two push rods, 45 be expansion loop, 451 be that open slot, 452 for the piece that rises, 5 are expansion sleeve, 6 are gland, 7 are upper compact heap, 8 are axle, 9
Be drive mechanism for nut, 10, G be workpiece.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to figs. 1 to Fig. 6, a kind of gear-hobbing clamp for the multiple bull gear parts of clamping as shown in Figure 1, including：Branch
Seat 1, expansion sleeve 5, at least one positioning disk 3, several centering clamping parts 4 and drive mechanism 10 are supportted, is set on the support base 1
There is lower locating piece 2.
The expansion sleeve 5 is movably arranged on the support base 1, and the expansion sleeve 5 is tapered, plays positioning and clamping
Effect.
Preferably, the upper and lower ends external diameter of the expansion sleeve 5 is different, and the external diameter of the expansion sleeve 5 is from top to bottom in gradual
Shape is reduced, one layer of magnesium alloy is coated on the external diameter of the expansion sleeve 5, adds the external diameter of expansion sleeve 5 and the internal diameter of positioning disk 3
Contact area, general contact area improve 15% compared with the prior art.
The positioning disk 3 is set on the expansion sleeve 5, and the positioning disk 3 plays coarse positioning to workpiece G internal diameter, this
Sample is easy to install workpiece G on fixture, as shown in figure 3, the positioning disk 3 includes several cavitys 31, several first openings
34 and several second openings 35, first opening 34 be connected with the cavity 31, and described first be open 34 with it is described
The outer peripheral face of positioning disk 3 mutually runs through；Second opening 35 is connected with the cavity 31, and described second be open 35 with it is described
The outer peripheral face of positioning disk 3 mutually runs through.
As shown in Fig. 2 the centering clamping part 4 includes the first push rod 41, center bridge 42, the second push rod 44 and supporting rod
43, the center bridge 42 is articulated in the cavity 31, and the center bridge 42 may pass through first opening 34 to the positioning
The periphery of disk 3 is stretched out, and the center bridge 42 plays a part of fine positioning, also acts as the effect of clamping, and first push rod 41 is lived
It is dynamic to be arranged in the positioning disk 3, and extend into the cavity 31, and can keep out on the center bridge 42；The folder
Bar 43 to be held to be articulated in the cavity 31, second push rod 44 is movably arranged in the positioning disk 3, and to the cavity 31
Interior extension, and can keep out on the supporting rod 43；The centering clamping part 4 also includes expansion loop 45, the expansion loop
45 are placed in the cavity 31, and can be in contact with the center bridge 42 and the supporting rod 43, and the expansion loop 45 can be worn
Second opening 35 to be crossed to stretch out to the periphery of the positioning disk 3, the expansion loop 45 plays a part of being accurately positioned and clamped,
The dual centering and clamping of the center bridge 42 and the expansion loop 45 so that the fixture registration, reliable clamping, additionally
Eliminate multiple gear ring inner hole precision errors it is inconsistent caused by clamping difficult problem, improve the processing of more part by one-step clampings
Precision.
As shown in figure 1, the drive mechanism 10 is fixedly installed on gear-hobbing machine, and it is connected with the expansion sleeve 5.
Preferably, the drive mechanism is cylinder, and cylinder can be fixed on support base 1.
As shown in Figure 2 and Figure 4, the center bridge 42 is articulated in the cavity 31 by first axle, the center bridge 42
Centering end 421 may pass through first opening 34 and stretched out to the periphery of the positioning disk 3, first push rod 41 can keep out
On first inclined-plane 422 of the center bridge 42 so that reliable clamping.
As shown in Figure 2 and Figure 5, the supporting rod 43 is articulated in the cavity 31 by the second axle, second push rod
44 can keep out on the second inclined-plane 434 of the supporting rod 43 so that reliable clamping.
As shown in Fig. 2, Fig. 4 and Fig. 5, the expansion loop 45 is located at the first projection 32 of the positioning disk 3 and the positioning
It between second projection 33 of disk 3, and can keep out in the first groove 424 of the center bridge 42, and can keep out in the folder
Hold the bare terminal end 431 of bar 43.
As shown in Figures 2 and 3, the positioning disk 3 also includes the first pilot hole 36 and the second pilot hole 37, and described first pushes away
Bar 41 is movably arranged in the first pilot hole 36, and second push rod 44 is movably arranged in the second pilot hole 37.
As shown in Figure 4 and Figure 5, there is clamping stagnation end 425 on the center bridge 42, there is clamping stagnation groove on the supporting rod 43
432, the clamping stagnation end 425 is located at the side of the clamping stagnation groove 432.
As shown in fig. 6, the expansion loop 45 includes the piece 452 that rises that several are sequentially connected, it is provided with the piece 452 that rises
Open slot 451, multiple pieces 452 that rise can make clamp error diminish.
The expansion loop 45 is less likely to occur to wear in itself, even if wearing, it deforms upon after-applied in gear
Expanding force can still realize the reliable grip of gear, so as to improve the machining accuracy of gear.
As shown in figure 1, the gear-hobbing clamp for the multiple bull gear parts of clamping also includes axle 8, gland 6 and upper compact heap 7,
The gland 6 is set on axle 8, and the upper surface of the upper compact heap 7 is kept out on the lug of gland 6, the upper compact heap 7
Lower surface is kept out is used for workpiece G axially position in workpiece G upper surface, the compact heap 7.
As shown in figure 1, the drive mechanism 10 is connected by axle 8 with the expansion sleeve 5.
Gear-hobbing clamp for the multiple bull gear parts of clamping also includes nut 9, and the nut 9 is arranged on the upper end of axle 8,
And the lower surface of the nut 9 compresses the upper surface of the gland 6.
As shown in Fig. 2, Fig. 4 and Fig. 5, the center bridge 42 also has the first axis hole 423, and the first axle is arranged on first
In axis hole 423, the supporting rod 43 can be swung around first axle, and the supporting rod 43 has the second axis hole 433, and second axle is set
Put in the second axis hole 433, the supporting rod 43 can be swung around the second axle.
As shown in figure 1, several positioning disks 3 are sequentially sleeved on the expansion sleeve 5 from top to bottom, on the positioning disk 3
Periphery on be mounted on workpiece G, the centering clamping part 4 in the positioning disk 3 is used to that the periphery of positioning disk 3 will to be arranged on
On workpiece G clamp, can be achieved multiple bull gears simultaneously clamp on.
The number of the positioning disk 3 is the number determination according to processing part, and a positioning can be set on a workpiece
Disk 3, the positioning disk 3 of 2 or more than 3 can also be set, centering clamping part 4 is uniformly arranged on positioning disk 3, and centering clamps
Part 4 can be even number or odd number.
General less than 7 grades Gear Processings, 3 centering clamping parts 4 are generally preferably provided with positioning disk 3, for 7
Level, 6 grades of Gear Processings, centering clamping part 4 are traditionally arranged to be 6 or 9, even more than 9, added for 5 grades with gear
Work, centering clamping part 4 are traditionally arranged to be 12 or 18.
During bull gear clamping, positioning disk 3 first carries out coarse positioning to gear ring endoporus, then carries out essence by clamping section 4 of feeling relieved
Positioning and clamping, apply while this coarse positioning and fine positioning, improve positioning precision, more improve clamping efficiency.
The expansion sleeve 5 is interference fit with axle 8, and the drive shaft 8 of drive mechanism 10 moves down, the expansion sleeve 5
As axle 8 moves downward, when the expansion sleeve 5 moves downward, apply outside extruding force to positioning disk 3 so that in positioning disk 3
Centering clamping part 4 outwards uphold, clamp the workpiece G on the periphery of positioning disk 3, at the same the nut 9 on the top of the axle 8 with
Axle 8 to move down so that gland 6 applies downward power, the upper workpiece pressing G of compact heap 7, it is possible to increase tooth to upper compact heap 7
The machining accuracy of wheel, it is easy to workpieces processing G, the structure can realize that multiple bull gears simultaneously clamp on, and centering precision is high, so as to improve
Gear hobbing precision.
When clamping part 4 of feeling relieved outwards is upheld, first push rod 41 promotes the center bridge 42 along the first axle
Swing, second push rod 44 promotes supporting rod 43 to swing, and the center bridge 42 is by the expansion loop 45 in the cavity 31
Promote forward, extrude workpiece G, realize the reliable grip to workpiece G, and centering precision is high, clamping workpiece is convenient and swift, can
Improve Gear Processing precision.
The structure of the centering clamping part 4 is novel, and drive mechanism 10 can conveniently realize centering by the motion of drive shaft 8
Clamping and release of the clamping part 4 to workpiece, greatly shorten the clamping time of workpiece, improve work rate, have good
Technology and economic value, suitable for being widely popularized utilization.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of gear-hobbing clamp for the multiple bull gear parts of clamping, including support base (1), locating piece (2) and expansion sleeve
(5), the support base (1) is provided with lower locating piece (2), and the expansion sleeve (5) is movably arranged on the support base (1), its
It is characterised by, in addition to：
At least one positioning disk (3), the positioning disk (3) are set on the expansion sleeve (5), and the positioning disk (3) is if include
Dry cavity (31), several first openings (34) and several second openings (35), first opening (34) and the sky
Chamber (31) is connected, and first opening (34) and the outer peripheral face of the positioning disk (3) mutually run through；Second opening (35)
It is connected with the cavity (31), and second opening (35) and the outer peripheral face of the positioning disk (3) mutually run through；
Several centering clamping parts (4), the centering clamping part (4) include the first push rod (41), center bridge (42), second
Push rod (44) and supporting rod (43), the center bridge (42) are articulated in the cavity (31), and the center bridge (42) may pass through
First opening (34) is stretched out to the periphery of the positioning disk (3), and first push rod (41) is movably arranged on the positioning
In disk (3), and extend into the cavity (31), and can keep out on the center bridge (42)；Supporting rod (43) pivot
It is connected in the cavity (31), second push rod (44) is movably arranged in the positioning disk (3), and to the cavity (31)
Interior extension, and can keep out on the supporting rod (43)；The centering clamping part (4) also includes expansion loop (45), described
Expansion loop (45) is placed in the cavity (31), and can be in contact with the center bridge (42) and the supporting rod (43), institute
State expansion loop (45) and may pass through periphery stretching of second opening (35) to the positioning disk (3)；
Drive mechanism (10), the drive mechanism (10) is fixedly installed on gear-hobbing machine, and is connected with the expansion sleeve (5).
2. the gear-hobbing clamp according to claim 1 for the multiple bull gear parts of clamping, it is characterised in that the centering
Block (42) is articulated in the cavity (31) by first axle, and the centering end (421) of the center bridge (42) may pass through described the
One opening (34) is stretched out to the periphery of the positioning disk (3), and first push rod (41) can be kept out in the center bridge (42)
On first inclined-plane (422).
3. the gear-hobbing clamp according to claim 2 for the multiple bull gear parts of clamping, it is characterised in that the clamping
Bar (43) is articulated in the cavity (31) by the second axle, and second push rod (44) can be kept out in the supporting rod (43)
On second inclined-plane (434).
4. the gear-hobbing clamp according to claim 3 for the multiple bull gear parts of clamping, it is characterised in that the expansion
Ring (45) is located between first raised (32) of the positioning disk (3) and second raised (33) of the positioning disk (3), and can support
Keep off in the first groove (424) of the center bridge (42), and the bare terminal end (431) in the supporting rod (43) can be kept out.
5. the gear-hobbing clamp according to claim 4 for the multiple bull gear parts of clamping, it is characterised in that the positioning
Disk (3) also includes the first pilot hole (36) and the second pilot hole (37), and first push rod (41) is movably arranged on the first guiding
In hole (36), second push rod (44) is movably arranged in the second pilot hole (37).
6. the gear-hobbing clamp according to claim 4 for the multiple bull gear parts of clamping, it is characterised in that the centering
There are clamping stagnation end (425) on block (42), there is clamping stagnation groove (432) on the supporting rod (43), the clamping stagnation end (425) is located at institute
State the side of clamping stagnation groove (432).
7. the gear-hobbing clamp according to claim 4 for the multiple bull gear parts of clamping, it is characterised in that the expansion
Ring (45) includes several pieces that rise (452) being sequentially connected, and open slot (451) is provided with the piece that rises (452).
8. the gear-hobbing clamp according to claim 1 for the multiple bull gear parts of clamping, it is characterised in that also including axle
(8), gland (6) and upper compact heap (7), the gland (6) are set on axle (8), and the upper surface of the upper compact heap (7) is kept out
On the lug of gland (6).
9. the gear-hobbing clamp according to claim 8 for the multiple bull gear parts of clamping, it is characterised in that the driving
Mechanism (10) is connected by axle (8) with the expansion sleeve (5).
10. the gear-hobbing clamp according to claim 9 for the multiple bull gear parts of clamping, it is characterised in that also include
Nut (9), the nut (9) is arranged on the upper end of axle (8), and the lower surface of the nut (9) compresses the upper of the gland (6)
End face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610963702.9A CN106363252B (en) | 2016-11-04 | 2016-11-04 | A kind of gear-hobbing clamp for the multiple bull gear parts of clamping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610963702.9A CN106363252B (en) | 2016-11-04 | 2016-11-04 | A kind of gear-hobbing clamp for the multiple bull gear parts of clamping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106363252A CN106363252A (en) | 2017-02-01 |
| CN106363252B true CN106363252B (en) | 2018-04-06 |
Family
ID=57893104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610963702.9A Active CN106363252B (en) | 2016-11-04 | 2016-11-04 | A kind of gear-hobbing clamp for the multiple bull gear parts of clamping |
Country Status (1)
| Country | Link |
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| CN (1) | CN106363252B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109551063A (en) * | 2018-12-27 | 2019-04-02 | 南京二机齿轮机床有限公司 | A kind of high tolerance gear ring gear-hobbing clamp |
| CN111037005B (en) * | 2019-11-28 | 2021-10-01 | 宣城坚腾智能传动设备有限公司 | A equipment for gear machining |
| CN111889971A (en) * | 2020-07-20 | 2020-11-06 | 贵州航天职业技术学院 | Tooth-shaped ring processing technology |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2666576B2 (en) * | 1991-02-08 | 1997-10-22 | 日産自動車株式会社 | Gear-shaped workpiece chucking device |
| CN2860690Y (en) * | 2005-12-27 | 2007-01-24 | 杨金平 | Lathe clamping device |
| CN202461714U (en) * | 2011-12-28 | 2012-10-03 | 重庆机床(集团)有限责任公司 | Mechanical expansion type gear shaving clamp applicable to machining large gear ring |
| CN203124871U (en) * | 2012-12-27 | 2013-08-14 | 浙江工贸职业技术学院 | Fixture for gear shaft machining |
| CN103203504A (en) * | 2013-05-05 | 2013-07-17 | 青岛金环汽配制造有限公司 | Expanding gear hobbing mould |
| DE102013018243A1 (en) * | 2013-10-30 | 2015-04-30 | The Gleason Works | Arrangement for coupling a workpiece and clamping device |
| CN203635975U (en) * | 2013-11-03 | 2014-06-11 | 西安志越机电科技有限公司 | Outer thread turning clamping device for taper-lock external-expanded type thin-walled workpiece |
| CN106041227B (en) * | 2016-08-02 | 2018-11-23 | 盛瑞传动股份有限公司 | A kind of large aperture gear ring gear-hobbing clamp |
| CN206123214U (en) * | 2016-09-30 | 2017-04-26 | 江波 | Tight frock of outside clamp of column work piece |
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2016
- 2016-11-04 CN CN201610963702.9A patent/CN106363252B/en active Active
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| CN106363252A (en) | 2017-02-01 |
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