CN209532115U - A kind of bolt sphere processing special horizontal lathe - Google Patents
A kind of bolt sphere processing special horizontal lathe Download PDFInfo
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- CN209532115U CN209532115U CN201821014689.3U CN201821014689U CN209532115U CN 209532115 U CN209532115 U CN 209532115U CN 201821014689 U CN201821014689 U CN 201821014689U CN 209532115 U CN209532115 U CN 209532115U
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- angle scale
- vertical
- bolt sphere
- eccentric wheel
- worm screw
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Abstract
The utility model relates to bolt ball processing technique equipment technology fields, specifically a kind of bolt sphere processes special horizontal lathe, including lathe bed, the lathe bed is equipped with main shaft and middle slide plate, the middle slide plate is equipped with fixture, and the fixture includes pedestal, horizontal angle scale, vertical angle scale, worm screw, worm gear, planetary gear, sun gear, transmission shaft, axle sleeve, locking pin, eccentric wheel and shift fork.Compared with the existing technology, the utility model bolt sphere processing the having the beneficial effect that of special horizontal lathe (1) utilizes worm geared self-locking performance, vertical angle disc spins when improving the clamping efficiency of bolt sphere and preventing processing；(2) it can finely tune, operating error is small, improves machining accuracy；(3) eccentric wheel and locking pin lock horizontal angle scale, swift to operate and facilitate, and improve production efficiency；(4) rotation of eccentric wheel can drive transmission shaft vertical sliding simultaneously, and the function of gearing keeps the utility model more convenient in operation, improves production efficiency.
Description
Technical field
The utility model relates to bolt ball processing technique equipment technology field, specifically a kind of bolt sphere processes special horizontal
Lathe.
Background technique
Bolt sphere is the essential component part of grid structure, which is provided with multiple internal thread holes, for connecting with rod piece
It connects.A kind of bolt sphere positioning clamp for machining is disclosed application No. is 200920218210.2 utility model patent, including pedestal,
Horizontal angle scale, vertical angle scale and clamping mandrel etc., horizontal angle scale is rotatably mounted on the base and passes through locking screw
Mother's fastening, horizontal angle scale are equipped with vertical wallboard, and vertical angle scale is rotatably mounted on vertical wallboard and passes through locking
Nut fastening.Clamping mandrel is located in the aperture of vertical angle scale, and one end of clamping mandrel is equipped with for installing the outer of bolt sphere
Screw thread, the other end are equipped with four directions.Pedestal is fixedly mounted on the middle slide plate of horizontal lathe, in use, being first installed to bolt sphere
On clamping mandrel；Then, according to the position of bolt sphere threaded hole to be processed, fastening horizontal angle scale and vertical angle scale are unclamped
Locking nut, again by locking nut screwing after horizontal angle scale and vertical angle scale are rotate in place.Bolt sphere processing positioning
When fixture has the disadvantage in that bolt sphere is installed on clamping mandrel by (1), a hand is needed to pass through the fixed dress of interior four square head wrench
One end of sandwich axis, another hand tightens the benchmark threaded hole of bolt sphere and the external screw thread of clamping mandrel, due to cast iron materials
Bolt sphere than heavier, therefore the operating process is not only time-consuming and laborious, and bolt sphere is easy to cause to slip out of the hand, and causes horizontal lathe
Guide rail, lathe bed smashed even operator injured by a crashing object；(2) it relies on and can be manually rotated horizontal angle scale and the adjusting of vertical angle scale
Angle, operating error is larger, is unable to fine tune, and influences machining accuracy；(3) due to bolt sphere center of gravity may not at the centre of sphere,
It must keep buttressing bolt sphere during rotating vertical angle scale, will lead to vertical angle disc spins if loosing one's grip, operate
It is complicated and inconvenient；(4) it needs first to unscrew locking nut when adjusting angle, again by locking nut screwing, labour after adjusting
Intensity is big, production efficiency is low.
Utility model content
Purpose of the utility model is to solve above-mentioned the deficiencies in the prior art, and it is dedicated sleeping to provide a kind of bolt sphere processing
Formula lathe can reduce labor intensity of workers, improve production efficiency and machining accuracy, eliminate safe hidden trouble.
Technical problem to be solved in the utility model is realized using following technical scheme: a kind of bolt sphere processing is dedicated
Horizontal lathe, including lathe bed, the lathe bed are equipped with main shaft and middle slide plate, and the middle slide plate is equipped with fixture, the fixture packet
Include pedestal, horizontal angle scale, vertical angle scale, worm screw, worm gear, planetary gear, sun gear, transmission shaft, axle sleeve, locking pin,
Eccentric wheel and shift fork；The pedestal is fixedly mounted on middle slide plate, and vertical axes, the horizontal angle are installed at the top of the pedestal
Scale is slidably mounted on above pedestal by vertical axes；The horizontal angle scale is equipped with vertical plate, the vertical angle scale
On be installed with trunnion axis, the vertical angle scale is rotatably mounted on front side of vertical plate by trunnion axis, the axis of the trunnion axis
The axis co-planar of line and main shaft, the trunnion axis extend to the rear side of vertical plate, and the end of the trunnion axis is equipped with external screw thread；It is described
Worm screw is mounted on vertical plate and its axis is in vertical direction, and the worm gear is fixedly and coaxially connected with vertical angle scale, the snail
Worm and wheel engagement；The planetary gear is rotatably mounted on horizontal angle scale and coaxial with worm screw, the sun gear
It is fixedly mounted on a vertical axis, the planetary gear is engaged with sun gear；The axle sleeve is fixedly mounted on vertical plate, the axis
Top that is coaxial with worm screw and being located at worm screw is covered, the transmission shaft is slidably set in axle sleeve；The worm screw is equipped with axis
To through-hole, the transmission shaft passes through through-hole；The lower end of the transmission shaft is installed with the first frictional disk, and the lower end of the worm screw is fixed
There is the second frictional disk, is equipped with the third frictional disk being firmly connected with it, first frictional disk position above the planetary gear
Between the second frictional disk and third frictional disk；The locking pin run through horizontal angle scale and pedestal, the pedestal be equipped with
The matched arc through slot of locking pin, the center of circle of the arc through slot is on the axis of vertical axes, the lower end of the locking pin
It is installed with locking plate；The pivot joint of the upper end of the eccentric wheel and locking pin, the shift fork are fixedly connected with eccentric wheel, and described first rubs
It wipes disk and is equipped with annular groove, the shift fork is matched with annular groove；The eccentric wheel can lift locking pin simultaneously when rotating forward
Move up shift fork.
The technical solution of the utility model is also: the transmission shaft is equipped with limit plate, and the limit plate is located at axle sleeve
Lower section is equipped with spring between the axle sleeve and limit plate.Using the technical program, eccentric wheel, which rotates backward, releases horizontal angle scale
After locking between pedestal, the first frictional disk and third frictional disk are in close contact when spring, the first frictional disk when preventing transmission
It skids with third frictional disk, guarantees transmission efficiency.
The technical solution of the utility model is also: the worm gear is located at the front side of vertical plate.Using the technical program, worm gear,
Worm screw, planetary gear and sun gear are all located at the front side of vertical plate, vertical plate can prevent the iron filings generated when processing bolt ball and
Cutting fluid is splashed on above-mentioned part and leads to damage parts.
The technical solution of the utility model is also: the upper end of the transmission shaft is equipped with knob or handwheel, on the eccentric wheel
It is installed with and pulls handle.Locating clip is processed for bolt sphere disclosed in the utility model patent application No. is 200920218210.2
Tool is needed in clamping bolt sphere and the process for adjusting angle using tools such as interior four directions, fork spanner or adjustable wrenches, once tool is lost
Mistake can not then work, and influence manufacturing schedule.Using the technical program, during clamping bolt sphere and adjusting angle completely not
It needs to can be effectively solved the above problem using tool.
The technical solution of the utility model is also: the locking pin is equipped with two and right in the left and right sides of horizontal angle scale
Claim setting.Using the technical program, the locking fastness to horizontal angle scale and pedestal can be further enhanced.
The utility model additionally provides the method for above-mentioned bolt sphere processing special horizontal lathe process bolt sphere, including following
Step:
A, bolt sphere is tightened on trunnion axis by benchmark threaded hole；
B, knob is turned, vertical angle scale is adjusted to target angle；
C, handle is pulled in lifting upwards, reversely rotates eccentric wheel, unlocks horizontal angle scale and pedestal, meanwhile, make first
Friction pulley is contacted with third friction pulley；
D, knob is turned, the target angle that horizontal angle scale is adjusted；
E, handle is pulled in pressing, rotates in the forward direction eccentric wheel, and horizontal angle scale and pedestal extruding are locked at eccentric wheel and lock
Between tight disk；
F, milling flat, drilling and tapping is carried out to bolt sphere to process；
G, step b~f is repeated, is completed until by all hole processings of bolt sphere.
Compared with the existing technology, the utility model bolt sphere processing special horizontal lathe has the beneficial effect that (1) due to snail
Bar transmission has self-locking performance (can only drive worm gear rotation as driving link by worm screw, on the contrary then not all right), therefore in clamping
Trunnion axis is to maintain motionless when bolt sphere, bolt sphere can be held simultaneously with both hands and be carried out clamping, not only laborsaving, and can be prevented
Only bolt sphere slips out of the hand and causes the guide rail of horizontal lathe, lathe bed to be smashed even operator and injured by a crashing object；(2) by turning transmission
Axis is respectively adjusted horizontal angle scale and vertical angle scale, can finely tune, and operating error is small, improves machining accuracy；(3)
Due to worm-drive have self-locking performance, even if the center of bolt sphere not at the centre of sphere, adjust vertical angle scale process
Middle vertical angle scale will not be rotated because of above-mentioned reason, simple to operate；(4) worm-drive has self-locking performance, Neng Goufang
Only bolt sphere is made vertical angle disc spins by cutter active force, therefore does not need to lock vertical angle scale；Eccentric wheel and lock
Tight pin ensure that the locking of horizontal angle scale, and locking and unlocking process need to only pull eccentric wheel, therefore adjust bolt sphere angle
Polyvinyl chloride and facilitate, improve production efficiency；(5) rotate in the forward direction eccentric wheel can be achieved at the same time the locking of horizontal angle scale with
And first frictional disk and the second frictional disk contact, reversely rotate eccentric wheel can be achieved at the same time horizontal angle scale unlock and
The contact of first frictional disk and third frictional disk, the function of gearing keep the utility model more convenient in operation, improve
Production efficiency.
Detailed description of the invention
Fig. 1 is that bolt sphere processing special horizontal lathe is mounted on the structural schematic diagram on horizontal lathe.
Fig. 2 is the partial enlarged view in the portion A in Fig. 1.
Fig. 3 is the main view (horizontal angle scale and pedestal locking state) that bolt sphere processes special horizontal lathe.
Fig. 4 is the view (horizontal angle scale and pedestal locking state) of B-B direction in Fig. 3.
Fig. 5 is the top view (horizontal angle scale and pedestal locking state) that bolt sphere processes special horizontal lathe.
Fig. 6 is the bottom view (horizontal angle scale and pedestal locking state) that bolt sphere processes special horizontal lathe.
Fig. 7 is the side view (horizontal angle scale and pedestal unlocked state) that bolt sphere processes special horizontal lathe.
In figure: 1, pedestal, 2, horizontal angle scale, 3, vertical angle scale, 4, vertical axes, 5, vertical plate, 6, trunnion axis, 7, snail
Bar, 8, worm gear, 9, planetary gear, 10, sun gear, 11, transmission shaft, 12, axle sleeve, 13, locking pin, 14, eccentric wheel, 15, dial
Fork, the 16, first frictional disk, the 17, second frictional disk, 18, third frictional disk, 19, arc through slot, 20, locking plate, 21, annular
Groove, 22, limit plate, 23, spring, 24, knob, 25, pull handle, 26, lathe bed, 27, middle slide plate, 28, main shaft, 29, bolt sphere.
Specific embodiment
In order to clarify the technical characteristics of the invention, below according to attached drawing to specific embodiment of the present invention make into
One step explanation.
FIG. 1 to FIG. 7 shows the bolt sphere processing special horizontal lathe of the utility model, and a kind of bolt sphere processing is dedicated sleeping
Formula lathe, including lathe bed 26, lathe bed 26 are equipped with main shaft 28 and middle slide plate 27, and middle slide plate 27 is equipped with fixture, to avoid interference with,
The small slide plate of horizontal lathe is removed.
Fixture includes pedestal 1, horizontal angle scale 2, vertical angle scale 3, worm screw 7, worm gear 8, planetary gear 9, sun gear
10, transmission shaft 11, axle sleeve 12, locking pin 13, eccentric wheel 14 and shift fork 15.
Pedestal 1 is fixedly mounted on middle slide plate 27, and the top of pedestal 1 is installed with vertical axes 4, and horizontal angle scale 2 passes through perpendicular
D-axis 4 is slidably mounted on 1 top of pedestal, and horizontal angle scale 2 can be rotated around vertical axes 4 and can be slided along the axial direction of vertical axes 4
It is dynamic.
Horizontal angle scale 2 is equipped with vertical plate 5, is installed with trunnion axis 6 on vertical angle scale 3, vertical angle scale 3 passes through level
Axis 6 is rotatably mounted on 5 front side of vertical plate.The axis of trunnion axis 6 and the axis co-planar of main shaft 28, trunnion axis 6 extend to vertical plate 5
Rear side, the end of trunnion axis 6 is equipped with external screw thread, for cooperating with the benchmark threaded hole in bolt sphere 29.
Horizontal angle scale 2 and vertical angle scale 3 are equipped with scale.
Worm screw 7 is mounted on vertical plate 5 and its axis is in vertical direction, and worm gear 8 is fixedly and coaxially connected with vertical angle scale 3
And it is located at the front side of vertical plate 5, worm screw 7 engages with worm gear 8.
Planetary gear 9 is rotatably mounted on horizontal angle scale 2 and coaxial with worm screw 7, the fixed installation of sun gear 10
In vertical axes 4, planetary gear 9 is engaged with sun gear 10.
Axle sleeve 12 is fixedly mounted on vertical plate 5, and axle sleeve 12 is coaxial with worm screw 7 and is located at the top of worm screw 7, and transmission shaft 11 can
Sliding is set in axle sleeve 12.Transmission shaft 11 is equipped with limit plate 22, and limit plate 22 is located at the lower section of axle sleeve 12, axle sleeve 12 and
Spring 23 is equipped between limit plate 22.
Worm screw 7 is equipped with axially extending bore, and transmission shaft 11 passes through through-hole.
The upper end of transmission shaft 11 is equipped with knob 24, and the lower end of transmission shaft 11 is installed with the first frictional disk 16, the lower end of worm screw 7
It is installed with the second frictional disk 17, the top of planetary gear 9 is equipped with the third frictional disk 18 being firmly connected with it, the first frictional disk 16
Between the second frictional disk 17 and third frictional disk 18.
Locking pin 13 is equipped with two and is symmetrical arranged in the left and right sides of horizontal angle scale 2.Locking pin 13 runs through horizontal angle
Scale 2 and pedestal 1, pedestal 1 be equipped with the matched arc through slot 19 of locking pin 13, the center of circle of arc through slot 19 is vertical
On the axis of axis 4, the lower end of locking pin 13 is installed with locking plate 20.The upper end of eccentric wheel 14 and locking pin 13 is pivotally connected, shift fork 15
It is fixedly connected with eccentric wheel 14, the first frictional disk 16 is equipped with annular groove 21, and shift fork 15 is matched with annular groove 21.Eccentric wheel
It is installed on 14 and pulls handle 25, locking pin 13 can be lifted when eccentric wheel 14 rotates forward and move up shift fork 15.
The utility model additionally provides the method for above-mentioned bolt sphere processing special horizontal lathe process bolt sphere, including following
Step:
A, bolt sphere 29 is tightened on trunnion axis 6 by benchmark threaded hole, since worm-drive has self-locking performance,
Therefore can be held with both hands bolt sphere 29 carry out this operation, can prevent bolt sphere 29 from slipping out of the hand and cause horizontal lathe guide rail,
Lathe bed is smashed even operator and is injured by a crashing object.
B, knob 24 is turned so that transmission shaft 11 rotates, and the first frictional disk 16 contacts (such as Fig. 4 with the second frictional disk 17 at this time
It is shown), the rotation of transmission shaft 11 passes to vertical angle scale 3 by worm screw 7 and worm gear 8, passes through vertical angle scale 3 and vertical plate 5
On scale control vertical angle scale 3 rotation angle, arrive target angle until vertical angle scale 3 is adjusted, during this, lock
Tight pin 13 slides in arc through slot 19.
C, after the angular adjustment of vertical angle scale 3, handle 25 is pulled in lifting upwards, reversely rotates eccentric wheel 14, this
In the process, due at a distance from the pivoting point of eccentric wheel 14 and the contact point of horizontal angle scale 2 to eccentric wheel 14 and locking pin 13 by
Decrescence small, therefore, locking pin 13 moves down a distance, increases the distance between eccentric wheel 14 and locking plate 20, level angle
Disk 2 and pedestal 1 unlock.Meanwhile the leverage of eccentric wheel 14 moves down shift fork 15, shift fork 15 drives under the first friction pulley 16
It moves, the first friction pulley 16 is made to contact (as shown in Figure 7) with third friction pulley 18.
D, knob 24 is turned so that transmission shaft 11 rotates, and transmission shaft 11 drives 9 rotation of star gear train, and star gear train 9 is around too
Positive gear 10 revolves and horizontal angle scale 2 is driven to rotate, and passes through the scale controlled level angle on horizontal angle scale 2 and pedestal 1
The rotation angle of disk 2, until the target angle that horizontal angle scale 2 is adjusted.
E, after the angular adjustment of horizontal angle scale 2, handle 25 is pulled in pressing, rotates in the forward direction eccentric wheel 14, this process
In, due to gradually increasing at a distance from eccentric wheel 14 and the pivoting point of the contact point of horizontal angle scale 2 to eccentric wheel 14 and locking pin 13
Greatly, therefore, locking pin 13 moves up a distance, and horizontal angle scale 2 and the extruding of pedestal 1 are locked at eccentric wheel 14 and locking plate 20
Between.
F, the left and right feeding and front and back feeding of bolt sphere 29, Horizontal type cart are carried out respectively by sliding box 28 and with middle slide plate 27
Bed carries out milling flat, drilling and tapping to bolt sphere 29 and processes.
G, step b~f is repeated, is completed until by all hole processings of bolt sphere 29.
The embodiments of the present invention are elaborated above in conjunction with attached drawing, but the utility model is not limited to
Embodiment is stated, within the knowledge of a person skilled in the art, the utility model aims can also not departed from
Under the premise of make a variety of changes.
Claims (5)
1. a kind of bolt sphere processes special horizontal lathe, including lathe bed (26), the lathe bed (26) be equipped with main shaft (28) and in
Slide plate (27), it is characterised in that: the middle slide plate (27) is equipped with fixture, and the fixture includes pedestal (1), horizontal angle scale
(2) and vertical angle scale (3)；The pedestal (1) is fixedly mounted on middle slide plate (27), is installed at the top of the pedestal (1)
Vertical axes (4), the horizontal angle scale (2) are slidably mounted on above pedestal (1) by vertical axes (4)；The horizontal angle
Scale (2) is equipped with vertical plate (5), is installed with trunnion axis (6) on the vertical angle scale (3), the vertical angle scale (3) passes through
Trunnion axis (6) is rotatably mounted on front side of vertical plate (5), the axis of the trunnion axis (6) and the axis co-planar of main shaft (28), institute
The rear side that trunnion axis (6) extends to vertical plate (5) is stated, the end of the trunnion axis (6) is equipped with external screw thread；It further include worm screw (7), snail
It takes turns (8), planetary gear (9), sun gear (10), transmission shaft (11), axle sleeve (12), locking pin (13), eccentric wheel (14) and dials
It pitches (15)；The worm screw (7) is mounted on vertical plate (5) and its axis is in vertical direction, the worm gear (8) and vertical angle scale
(3) it is fixedly and coaxially connected, the worm screw (7) is engaged with worm gear (8)；The planetary gear (9) is rotatably mounted on horizontal angle
On scale (2) and with worm screw (7) coaxially, the sun gear (10) is fixedly mounted on vertical axes (4), the planetary gear
(9) it is engaged with sun gear (10)；The axle sleeve (12) is fixedly mounted on vertical plate (5), and the axle sleeve (12) and worm screw (7) are same
Axis and the top for being located at worm screw (7), the transmission shaft (11) are slidably set in axle sleeve (12)；It is set on the worm screw (7)
There is axially extending bore, the transmission shaft (11) passes through through-hole；The lower end of the transmission shaft (11) is installed with the first frictional disk (16), institute
The lower end for stating worm screw (7) is installed with the second frictional disk (17), and the top of the planetary gear (9) is equipped with the be firmly connected with it
Three frictional disks (18), first frictional disk (16) is between the second frictional disk (17) and third frictional disk (18)；The lock
Tight pin (13) runs through horizontal angle scale (2) and pedestal (1), and the pedestal (1) is equipped with and passes through with locking pin (13) matched arc
Through slot (19), on the axis of vertical axes (4), the lower end of the locking pin (13) is fixed in the center of circle of the arc through slot (19)
There are locking plate (20)；The upper end of the eccentric wheel (14) and locking pin (13) is pivotally connected, and the shift fork (15) and eccentric wheel (14) are solid
Fixed connection, first frictional disk (16) are equipped with annular groove (21), and the shift fork (15) matches with annular groove (21)；Institute
Locking pin (13) can be lifted when eccentric wheel (14) rotates forward and move up shift fork (15) by stating.
2. bolt sphere according to claim 1 processes special horizontal lathe, it is characterised in that: set on the transmission shaft (11)
Have limit plate (22), the limit plate (22) is located at the lower section of axle sleeve (12), sets between the axle sleeve (12) and limit plate (22)
There are spring (23).
3. bolt sphere according to claim 1 processes special horizontal lathe, it is characterised in that: the worm gear (8) is located at vertical
The front side of plate (5).
4. any bolt sphere processes special horizontal lathe according to claim 1~3, it is characterised in that: the transmission shaft
(11) upper end is equipped with knob (24) or handwheel, is installed on the eccentric wheel (14) and pulls handle (25).
5. any bolt sphere processes special horizontal lathe according to claim 1~3, it is characterised in that: the locking pin
(13) two are equipped with and is symmetrical arranged in the left and right sides of horizontal angle scale (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821014689.3U CN209532115U (en) | 2018-06-29 | 2018-06-29 | A kind of bolt sphere processing special horizontal lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821014689.3U CN209532115U (en) | 2018-06-29 | 2018-06-29 | A kind of bolt sphere processing special horizontal lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209532115U true CN209532115U (en) | 2019-10-25 |
Family
ID=68244442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821014689.3U Expired - Fee Related CN209532115U (en) | 2018-06-29 | 2018-06-29 | A kind of bolt sphere processing special horizontal lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209532115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465828A (en) * | 2018-06-29 | 2018-08-31 | 菏泽学院 | A kind of method that bolt sphere processes special horizontal lathe and processing bolt ball |
| CN111992739A (en) * | 2020-08-27 | 2020-11-27 | 江特科技股份有限公司 | Plastic spherical surface polishing-free turning process |
-
2018
- 2018-06-29 CN CN201821014689.3U patent/CN209532115U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465828A (en) * | 2018-06-29 | 2018-08-31 | 菏泽学院 | A kind of method that bolt sphere processes special horizontal lathe and processing bolt ball |
| CN111992739A (en) * | 2020-08-27 | 2020-11-27 | 江特科技股份有限公司 | Plastic spherical surface polishing-free turning process |
| CN111992739B (en) * | 2020-08-27 | 2021-07-27 | 江特科技股份有限公司 | Plastic spherical surface polishing-free turning process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 Termination date: 20200629 |