CN207606824U - A kind of wheel blanks outer rim lineation device - Google Patents
A kind of wheel blanks outer rim lineation device Download PDFInfo
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- CN207606824U CN207606824U CN201721815638.6U CN201721815638U CN207606824U CN 207606824 U CN207606824 U CN 207606824U CN 201721815638 U CN201721815638 U CN 201721815638U CN 207606824 U CN207606824 U CN 207606824U
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- 238000000465 moulding Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000010924 continuous production Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
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Abstract
A kind of wheel blanks outer rim lineation device is made of wheel alignment clamping system, upper auxiliary system, lower auxiliary system, wheel rim scoring system and vision detection system.Wheel alignment clamping system completes positioning, clamping and rotation driving of the wheel on roller-way；Upper auxiliary system improves axially position precision and the power-assisted rotation of wheel；Lower auxiliary system improves radial positioning precision and the power-assisted rotation of wheel；Wheel rim scoring system completes the groove crest line processing of wheel outer rim；Vision detection system detected the insufficient blank of outer rim allowance.This device not only completes wheel outer rim and draws crest line, can also check the insufficient blank of outer rim allowance and come.
Description
Technical field
The utility model is related to the technical field of wheel blanks processing, specifically a kind of wheel identification devices.
Background technology
With the extensive use of aluminum-alloy wheel, type pattern is also more and more, some product front spoke moulding gaps
Very little or even identical, but size, wheel are wide, offset distance size is had any different, for example, 16x6.0 cuns and 17x6.0 cuns, 19x8.5 cuns and
19x9.0 cuns, front pose is consistent, and only wheel size, width are had any different, and are not easy fast resolution from the appearance merely.It is practical to add
Working hour also has manipulator to cause to collide with wrong blank the accident of bed.This patent is based on this present situation, provides a kind of wheel blanks
Outer rim lineation device can process groove crest line for one week to wheel blanks outer rim annular, and manipulator can pass through crest line
The similar blank of item number fast resolution avoids that processing accident is caused to occur due to wrong blank, in addition, this device also can recognize that wheel
Rim deforms larger blank.
Invention content
The purpose of this utility model is to provide for a kind of wheel blanks outer rim lineation device, can be to wheel blanks foreign steamer
Rim annular processes groove crest line for one week, and manipulator can be by the similar blank of item number fast resolution of crest line, in addition, this device is also
It can recognize that the larger blank of rim deformation, the insufficient blank of outer rim allowance screened.
To achieve the goals above, the technical solution of the utility model is：A kind of wheel blanks outer rim lineation device, by
Rack adjusts guide rail, adjusts cylinder, left slide unit, right slide unit, rack-and-pinion A, left cylinder, right cylinder, guide post, lifting platform, roll shaft
Holder, roll shaft, idler wheel, driven wheel, servo motor, driving wheel, clamping cylinder, clamping guide-rail, left skateboard, right slide plate, rack-and-pinion
B, driving motor, pinch wheels, side cylinder, side rails, side lifting platform, feeding cylinder I, support plate I, guide rail I, slider I, electronic
Cylinder, tool apron, marking knife, feeding cylinder II, support plate II, guide rail II, sliding block II, visual sensor, upper cylinder, guide post, into
It is formed to platform, upper servo motor, axis, rotating disk and pressing plate.
A kind of wheel blanks outer rim lineation device, by wheel alignment clamping system, upper auxiliary system, lower auxiliary system,
Wheel rim scoring system and vision detection system composition.Wheel alignment clamping system completes positioning of the wheel on roller-way, clamp and
Rotation driving；Upper auxiliary system improves axially position precision and the power-assisted rotation of wheel；Lower auxiliary system improves the radial direction of wheel
Positioning accuracy and power-assisted rotation；Wheel rim scoring system completes the groove crest line processing of wheel outer rim；Vision detection system will be outer
The insufficient blank of wheel rim allowance detected, and five big systems organically combine, common to complete in wheel blanks foreign steamer
Crest line is processed on rim.
Clamping cylinder output end connects left skateboard, and left skateboard is installed in right slide plate on clamping guide-rail, and passes through gear teeth
B is connected, and two driving motors are respectively mounted on left skateboard and right slide plate, and driving motor output end installs pinch wheels.Clamping cylinder drives
When dynamic left skateboard movement, under the action of rack-and-pinion B, right slide plate moves synchronously, thus can be by wheel by four pinch wheels
Positioning clamps, and driving motor drives pinch wheels rotation, under the action of frictional force, can be rotated with motor car wheel, this is wheel alignment
Clamping system completes positioning, clamping and rotation driving of the wheel on roller-way.
Four upper cylinders are fixed on right over rack, and cylinder output end connects feeding platform, under the action of guide post, control
Feeding platform processed moves up and down.Upper servo motor is mounted on feeding platform, and output end connects rotating disk, and plastic presser plate is fixed
On the rotating pan.Wheel is next by positioning clamping system locating clip, and upper cylinder starts, and drives pressing plate downlink, will by pressing plate
Vehicle wheel lip end face compresses, and to eliminate the play of wheel axial direction, improves the axially position precision of wheel, upper servo
Motor drives pressing plate rotation, can be rotated with power-assisted wheel, this is upper auxiliary system, improves the axially position precision and power-assisted of wheel
Rotation.
It adjusts cylinder output end and connects left slide unit, left slide unit and right slide unit, which are installed in, to be adjusted on guide rail, and passes through gear
Rack A is connected；Left cylinder is mounted on left slide unit, under the guiding role of guide post, controls the up and down motion of lifting platform；Roll shaft branch
Frame is fixed on lifting platform, and roll shaft is mounted on rollers, and idler wheel is mounted on roll shaft.Servo motor is fixed on lifting platform
On, output end installs driving wheel, and driven wheel is mounted on roll shaft, and driving wheel and driven wheel are by being driven band connection.Right slide unit
Completely the same with the structure setting on left slide unit, left cylinder and right cylinder start simultaneously, drive left side roller and right roller same
Step rises to wheel rim in wheel, adjusts cylinder and starts, drives left slide unit and right slide unit to move synchronously, the idler wheel of both sides is made to contact
Wheel rim in wheel improves the radial positioning precision of wheel, servo motor drives to strengthen the radial direction positioning of wheel
Dynamic idler wheel rotation, can be rotated with power-assisted wheel, this is lower auxiliary system, improve radial positioning precision and the power-assisted rotation of wheel.
Side cylinder be mounted on rack right side, output end connecting side lifting platform, under the guiding role of side rails, side gas
Cylinder controls the up and down motion of side lifting platform, and support plate I is fixed on the lifting platform of side, and the bottom that two guide rails I are fixed on support plate I is flat
On face, feeding cylinder I is fixed on I side of support plate, output end connection sliding block I, and slider I is mounted on guide rail I, and three electronic
Cylinder is equidistantly fixed in slider I from top to bottom, electric cylinder output end connect tool apron, marking knife be mounted on tool apron on, tool apron with
Built-in slideway cooperation in slider I, electric cylinder can adjust the collapsing length of marking knife, draw by driving tool apron to horizontally slip
The nose radius of line knife is R3.According to the quantity and wheel rim moulding for drawing crest line, the extension elongation for regulating marking knife is matching,
The upper and lower position that marking knife can be adjusted by side cylinder, makes it be matched with scribing position.When the wheels turn, cylinder I is fed
Start, driving marking knife feeding, groove crest line can be marked within one week along wheel annular, when crest line is more than three, can first be drawn
Complete three, it is further added by scribing line after adjusting marking knife height, so, flexibility is very big, can mark a variety of quantity as needed
Groove crest line, this is wheel rim scoring system, completes the groove crest line processing of wheel outer rim.
Support plate II is fixed on the left side side of rack, and two guide rails II are mounted on the baseplane of support plate II, feeding gas
Cylinder II is fixed on the side of support plate II, output end connection sliding block II, and sliding block II is mounted on guide rail II, visual sensor peace
Mounted in the front end of sliding block II, when detection rim notches crest line whether consecutive hours, can drive visual sensing by feeding cylinder II
Device improves accuracy of identification close to rim for automobile wheel, and when non-detection, visual sensor may be located remotely from rim for automobile wheel.15-18 cuns of wheels
It is preferred that depth of score 0.8mm, the preferred depth of score 1.0mm of 19 cun or more wheels.When wheel blanks outer rim allowance is sufficient
When, the crest line groove marked is continuous, is non-intermittent；When deforming larger blank amount deficiency, between the crest line groove that marks is
It is disconnected, discontinuous, identify whether crest line continuous by visual sensor, with this judge wheel outer rim whether have it is enough plus
Spare time measures, and when allowance deficiency, offline to screen away, this is vision detection system, by the insufficient hair of outer rim allowance
Base detected.
A kind of wheel blanks outer rim lineation device course of work is：Basis draws quantity and the wheel rim moulding of crest line first,
The extension elongation for regulating marking knife is matching, and the upper and lower position of marking knife is adjusted by side cylinder, makes itself and scribing position
Matching.When wheel is by positioning clamping system, upper auxiliary system and the driving rotation of lower auxiliary system, feeding cylinder I starts, driving
Marking knife is fed, and can mark groove crest line within one week along wheel annular.After processing is completed, wheel continues to rotate crest line, feeding
Cylinder II starts, and driving visual sensor identifies whether crest line is continuous close to rim for automobile wheel, judges that wheel outer rim is with this
No have enough allowance, offline to screen away when allowance deficiency.
This device can be used in automatic continuous production, conceives by rational process layout and cleverly, wheel is determined
Position clamping system, upper auxiliary system, lower auxiliary system, wheel rim scoring system and vision detection system organically combine, no
It has been only completed wheel outer rim and has drawn crest line, the insufficient blank of outer rim allowance can also have been checked and.Manipulator can lead to
The similar blank of item number fast resolution for crossing crest line avoids that processing accident is caused to occur due to wrong blank, by allowance deficiency
Blank screen, avoid it from flowing into machining sequence and cause the waste of operation resource.
Description of the drawings
Fig. 1 is a kind of front view of wheel blanks outer rim lineation device of the utility model.
Fig. 2 is a kind of left view of wheel blanks outer rim lineation device of the utility model.
Fig. 3 is a kind of vertical view of wheel blanks outer rim lineation device of the utility model.
Fig. 4 is a kind of enlarged drawing of wheel blanks outer rim lineation device scribing line tooling system of the utility model.
Fig. 5 is schematic diagram when a kind of wheel blanks outer rim lineation device of the utility model works.
In figure, 1- racks, 2- adjusting guide rails, 3- adjusting cylinders, the left slide units of 4-, the right slide units of 5-, 6- rack-and-pinion A,
7- left cylinders, 8- right cylinders, 9- guide posts, 10- lifting platforms, 11- rollers, 12- roll shafts, 13- idler wheels, 14- are driven
Wheel, 15- servo motors, 16- driving wheels, 17- clamping cylinders, 18- clamping guide-rails, 19- left skateboards, the right slide plates of 20-, 21- gears
Rack B, 22- driving motor, 23- pinch wheels, 24 side cylinders, 25- side rails, the sides 26- lifting platform, 27- feed cylinder I, 28-
Support plate I, 29- guide rails I, 30- slider Is, 31- electric cylinders, 32- tool aprons, 33- marking knifes, 34 feeding cylinders II, 35- branch
Fagging II, 36- guide rails II, 37- sliding blocks II, 38- visual sensors, 39- upper cylinders, 40- guide posts, 41- feeding platforms, 42-
Upper servo motor, 43- axis, 44- rotating disks, 45- pressing plates.
Specific implementation mode
Illustrate below in conjunction with the accompanying drawings, provide the utility model proposes specific device details and working condition.
A kind of wheel blanks outer rim lineation device by rack 1, adjusts guide rail 2, adjusting cylinder 3, left slide unit 4, right slide unit
5, rack-and-pinion A6, left cylinder 7, right cylinder 8, guide post 9, lifting platform 10, rollers 11, roll shaft 12, idler wheel 13, driven wheel
14, servo motor 15, driving wheel 16, clamping cylinder 17, clamping guide-rail 18, left skateboard 19, right slide plate 20, rack-and-pinion B21, driving
Motor 22, side cylinder 24, side rails 25, side lifting platform 26, feeding cylinder I 27, support plate I 28, guide rail I 29, is slided pinch wheels 23
Block I 30, electric cylinder 31, tool apron 32, marking knife 33, feeding cylinder II 34, support plate II 35, guide rail II 36, sliding block II 37, vision
Sensor 38, upper cylinder 39, guide post 40, feeding platform 41, upper servo motor 42, axis 43, rotating disk 44 and pressing plate 45 form.
A kind of wheel blanks outer rim lineation device, by wheel alignment clamping system, upper auxiliary system, lower auxiliary system,
Wheel rim scoring system and vision detection system composition.Wheel alignment clamping system completes positioning of the wheel on roller-way, clamp and
Rotation driving；Upper auxiliary system improves axially position precision and the power-assisted rotation of wheel；Lower auxiliary system improves the radial direction of wheel
Positioning accuracy and power-assisted rotation；Wheel rim scoring system completes the groove crest line processing of wheel outer rim；Vision detection system will be outer
The insufficient blank of wheel rim allowance detected, and five big systems organically combine, common to complete in wheel blanks foreign steamer
Crest line is processed on rim.
17 output end of clamping cylinder connects left skateboard 19, and left skateboard 19 is installed in right slide plate 20 on clamping guide-rail 18, and
It is connected by rack-and-pinion B21, two driving motors 22,22 output end of driving motor is respectively mounted on left skateboard 19 and right slide plate 20
Pinch wheels 23 are installed.When clamping cylinder 17 drives left skateboard 19 to move, under the action of rack-and-pinion B21, right slide plate 20 synchronizes fortune
Dynamic, to be clamped wheel alignment by four pinch wheels 23, driving motor 22 drives pinch wheels 23 to rotate, in frictional force
It under effect, can be rotated with motor car wheel, this is wheel alignment clamping system, completes positioning, clamping and rotation of the wheel on roller-way
Driving.
Four upper cylinders 39 are fixed on right over rack 1, and cylinder output end connects feeding platform 41, in the work of guide post 40
Under, control feeding platform 41 moves up and down.Upper servo motor 42 is mounted on feeding platform 41, and output end connects rotating disk
44, plastic presser plate 45 is fixed in rotating disk 44.Wheel is next by positioning clamping system locating clip, and upper cylinder 39 starts, and drives
Vehicle wheel lip end face is compressed by pressing plate 45, to eliminate the play of wheel axial direction, is improved by 45 downlink of dynamic pressure plate
The axially position precision of wheel, upper servo motor 42 are driven pressing plate 45 to rotate, can be rotated with power-assisted wheel, this is for upper auxiliary
System improves axially position precision and the power-assisted rotation of wheel.
It adjusts 3 output end of cylinder and connects left slide unit 4, left slide unit 4 and right slide unit 5, which are installed in, to be adjusted on guide rail 2, and is passed through
Rack-and-pinion A6 is connected；Left cylinder 7 is mounted on left slide unit 4, under the guiding role of guide post 9, above and below control lifting platform 10
Movement, rollers 11 are fixed on lifting platform 10, and roll shaft 12 is mounted on rollers 11, and idler wheel 13 is mounted on roll shaft 12
On.Servo motor 15 is fixed on lifting platform 10, and output end installs driving wheel 16, and driven wheel 14 is mounted on roll shaft 12, main
Driving wheel 16 and driven wheel 14 are by being driven band connection.Structure setting on right slide unit 5 and left slide unit 4 is completely the same, 7 He of left cylinder
Right cylinder 8 starts simultaneously, driving left side roller and right roller synchronize rise to wheel rim in wheel, adjust cylinder 3 and start, driving
Left slide unit 4 and right slide unit 5 move synchronously, and the idler wheel of both sides is made to touch wheel rim in wheel, to strengthen the radial direction of wheel
Direction positions, and improves the radial positioning precision of wheel, and servo motor 15 is driven idler wheel 13 to rotate, can be rotated with power-assisted wheel,
This is lower auxiliary system, improves radial positioning precision and the power-assisted rotation of wheel.
Side cylinder 24 is mounted on the right side of rack 1, output end connecting side lifting platform 26, in the guiding role of side rails 25
Under, side cylinder 24 controls the up and down motion of side lifting platform 26, and support plate I 28 is fixed on side lifting platform 26, and two guide rails I 29 are solid
It is scheduled on the baseplane of support plate I 28, feeding cylinder I 27 is fixed on I 28 side of support plate, and output end connection sliding block I 30 is sliding
Block I 30 is mounted on guide rail I 29, and three electric cylinders 31 are equidistantly fixed in slider I 30 from top to bottom, 31 output end of electric cylinder
Tool apron 32 is connected, marking knife 33 is mounted on tool apron 32, and tool apron 32 coordinates with slideway built-in in slider I 30, and electric cylinder 31 is logical
Tool apron 32 of overdriving horizontally slips, and can adjust the collapsing length of marking knife 33, the nose radius of marking knife 33 is R3.According to draw
The quantity of crest line and wheel rim moulding, the extension elongation for regulating marking knife 33 is matching, can be adjusted and be drawn by side cylinder 24
The upper and lower position of line knife 33, makes it be matched with scribing position.When the wheels turn, feeding cylinder I 27 starts, and drives marking knife 33
Feeding can mark groove crest line in one week along wheel annular, when crest line is more than three, can first draw three, adjust scribing line
Scribing line is further added by after knife up degree, so, flexibility is very big, can mark the groove crest line of a variety of quantity as needed, this is wheel
Rim scoring system completes the groove crest line processing of wheel outer rim.
Support plate II 35 is fixed on the left side side of rack 1, and two guide rails II 36 are mounted on the baseplane of support plate II 35,
Feeding cylinder II 34 is fixed on the side of support plate II 35, output end connection sliding block II 37, and sliding block II 37 is mounted on guide rail II
On 36, visual sensor 38 be mounted on sliding block II 37 front end, when detection rim notches crest line whether consecutive hours, pass through feeding gas
Cylinder II 34 can drive visual sensor 38 close to rim for automobile wheel to improve accuracy of identification, and when non-detection, visual sensor 38 can
With far from rim for automobile wheel.15-18 cuns of wheels preferred depth of score 0.8mm, the preferred depth of score 1.0mm of 19 cun or more wheels.When
When wheel blanks outer rim allowance abundance, the crest line groove marked is continuous, is non-intermittent；When the larger blank amount of deformation
When insufficient, the crest line groove marked is intermittent, discontinuous, identifies whether crest line is continuous by visual sensor 38, with this
Whether have enough allowance, when allowance deficiency, offline to screen away, this is vision-based detection system if judging wheel outer rim
System, the insufficient blank of outer rim allowance detected.
A kind of wheel blanks outer rim lineation device course of work is：Basis draws quantity and the wheel rim moulding of crest line first,
The extension elongation for regulating marking knife 33 is matching, and the upper and lower position of marking knife 33 is adjusted by side cylinder 24, makes it and draws
Line position matches.When wheel is by positioning clamping system, upper auxiliary system and the driving rotation of lower auxiliary system, cylinder I 27 is fed
Start, driving marking knife 33 is fed, and can mark groove crest line within one week along wheel annular.Crest line after processing is completed, wheel after
Continuous rotation, feeding cylinder II 34 start, and driving visual sensor 38 identifies whether crest line is continuous, sentences with this close to rim for automobile wheel
Whether disconnected wheel outer rim has enough allowance, offline to screen away when allowance deficiency.
This device can be used in automatic continuous production, conceives by rational process layout and cleverly, wheel is determined
Position clamping system, upper auxiliary system, lower auxiliary system, wheel rim scoring system and vision detection system organically combine, no
It has been only completed wheel outer rim and has drawn crest line, the insufficient blank of outer rim allowance can also have been checked and.Manipulator can lead to
The similar blank of item number fast resolution for crossing crest line avoids that processing accident is caused to occur due to wrong blank, by allowance deficiency
Blank screen, avoid it from flowing into machining sequence and cause the waste of operation resource.
Claims (2)
1. a kind of wheel blanks outer rim lineation device, by rack（1）, adjust guide rail（2）, adjust cylinder（3）, left slide unit（4）、
Right slide unit（5）, rack-and-pinion A（6）, left cylinder（7）, right cylinder（8）, guide post（9）, lifting platform（10）, rollers（11）, roller
Axis（12）, idler wheel（13）, driven wheel（14）, servo motor（15）, driving wheel（16）, clamping cylinder（17）, clamping guide-rail（18）, it is left
Slide plate（19）, right slide plate（20）, rack-and-pinion B（21）, driving motor（22）, pinch wheels（23）, side cylinder（24）, side rails
（25）, side lifting platform（26）, feeding cylinder I（27）, support plate I（28）, guide rail I（29）, slider I（30）, electric cylinder（31）, knife
Seat（32）, marking knife（33）, feeding cylinder II（34）, support plate II（35）, guide rail II（36）, sliding block II（37）, visual sensing
Device（38）, upper cylinder（39）, guide post（40）, feeding platform（41）, upper servo motor（42）, axis（43）, rotating disk（44）With
Pressing plate（45）Composition；It is characterized in that：Feed cylinder I（27）It is fixed on support plate I（28）Side, output end connection sliding block I
（30）, slider I（30）Mounted on guide rail I（29）On, three electric cylinders（31）It is equidistantly fixed on slider I from top to bottom（30）
On, electric cylinder（31）Output end connects tool apron（32）, marking knife（33）Mounted on tool apron（32）On, tool apron（32）With slider I
（30）Upper built-in slideway cooperation, electric cylinder（31）By driving tool apron（32）It horizontally slips, marking knife can be adjusted（33）'s
Collapsing length, marking knife（33）Nose radius be R3.
2. a kind of wheel blanks outer rim lineation device according to claim 1, it is characterised in that：Support plate II（35）Gu
It is scheduled on rack（1）Left side side, two guide rails II（36）Mounted on support plate II（35）Baseplane on, feed cylinder II（34）
It is fixed on support plate II（35）Side, output end connection sliding block II（37）, sliding block II（37）Mounted on guide rail II（36）On,
Visual sensor（38）Mounted on sliding block II（37）Front end, when detection rim notches crest line whether consecutive hours, pass through feeding gas
Cylinder II（34）Visual sensor can be driven（38）Accuracy of identification is improved close to rim for automobile wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721815638.6U CN207606824U (en) | 2017-12-22 | 2017-12-22 | A kind of wheel blanks outer rim lineation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721815638.6U CN207606824U (en) | 2017-12-22 | 2017-12-22 | A kind of wheel blanks outer rim lineation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207606824U true CN207606824U (en) | 2018-07-13 |
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ID=62799266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721815638.6U Expired - Fee Related CN207606824U (en) | 2017-12-22 | 2017-12-22 | A kind of wheel blanks outer rim lineation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207606824U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108068093A (en) * | 2017-12-22 | 2018-05-25 | 中信戴卡股份有限公司 | A kind of wheel blanks outer rim chalker |
| CN110814138A (en) * | 2019-11-28 | 2020-02-21 | 淮北九略企业管理咨询有限公司 | Hardware stamping die |
| CN110977919A (en) * | 2019-12-20 | 2020-04-10 | 大同新成新材料股份有限公司 | Combined intelligent carbon sliding plate bracket tool convenient for bidirectional scribing and operation method thereof |
-
2017
- 2017-12-22 CN CN201721815638.6U patent/CN207606824U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108068093A (en) * | 2017-12-22 | 2018-05-25 | 中信戴卡股份有限公司 | A kind of wheel blanks outer rim chalker |
| CN110814138A (en) * | 2019-11-28 | 2020-02-21 | 淮北九略企业管理咨询有限公司 | Hardware stamping die |
| CN110814138B (en) * | 2019-11-28 | 2020-12-08 | 阳信东泰精密金属有限公司 | Hardware stamping die |
| CN110977919A (en) * | 2019-12-20 | 2020-04-10 | 大同新成新材料股份有限公司 | Combined intelligent carbon sliding plate bracket tool convenient for bidirectional scribing and operation method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180713 |
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| CF01 | Termination of patent right due to non-payment of annual fee |