CN109420779A - A kind of PCBN blade of the asymmetric cutting edge structure of tool arc - Google Patents
A kind of PCBN blade of the asymmetric cutting edge structure of tool arc Download PDFInfo
- Publication number
- CN109420779A CN109420779A CN201710723003.1A CN201710723003A CN109420779A CN 109420779 A CN109420779 A CN 109420779A CN 201710723003 A CN201710723003 A CN 201710723003A CN 109420779 A CN109420779 A CN 109420779A
- Authority
- CN
- China
- Prior art keywords
- cutting edge
- point
- blunt
- round radius
- blunt round
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 112
- GJNGXPDXRVXSEH-UHFFFAOYSA-N 4-chlorobenzonitrile Chemical compound ClC1=CC=C(C#N)C=C1 GJNGXPDXRVXSEH-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000002161 passivation Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 238000003754 machining Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/04—Overall shape
- B23B2200/0447—Parallelogram
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/08—Rake or top surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2226/00—Materials of tools or workpieces not comprising a metal
- B23B2226/12—Boron nitride
- B23B2226/125—Boron nitride cubic [CBN]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The present invention relates to a kind of PCBN blade of the asymmetric cutting edge structure of tool arc, which is formed by including cutter hub 1 and point of a knife 2.The upper surface of cutter hub 1 has embedding groove identical with 2 shape of point of a knife, and point of a knife 2 is closely mounted in cutter hub 1.The cutting edge part of the blade uses Passivation Treatment, the blunt round radius of radiused cutting edge (11,12) is consecutive variations after being wherein passivated, it is gradually reduced from radiused cutting edge 11 to 12 blunt round radius of radiused cutting edge, linear cutting edge (9,10) blunt round radius is definite value.The present invention is suitable for continuous, interrupted cut processing, wherein radiused cutting edge 12 due to blunt round radius it is relatively small, then be suitable for continuous cutting and process, 11 blunt round radius of arc edge is relatively large, good impact resistance, is suitable for interrupted cut and processes.The present invention can reduce the heating power load on cutting edge, reduce cutting temperature, reduce tool wear, improve cutter life.Meanwhile gradual change cutting edge structure can reduce workpiece surface plastic strain, improve workpiece surface quality.
Description
Technical field
The present invention relates to harden-cutting fields, and in particular to a kind of suitable for continuous, interrupted cut processing asymmetric
The PCBN blade of cutting edge structure.
Background technique
In high-speed hard cutting, PCBN cutter is common cutter, with high rigidity, wearability, high thermal stability, compared with
The characteristics of chemical stability well, good thermal conductivity, lower coefficient of friction.But since all kinds of cutters after sharpening pass through height
Power microscope observes the defects of there are also tippings, crackle, causes in machining to be that rate of depreciation is accelerated, leads to tipping.And PCBN
Cutter material is expensive, and biggish economic loss is had after tipping.Therefore, people strengthen frequently with the method for cutting edge passivation
PCBN cutting edge roundness, Passivation Treatment can effectively reduce the defect in cutter flank, improve cutter shock resistance, slow down cutter
Wear rate extends cutting-tool's used life.
Cutting edge blunt round radius is smaller, and the crimp radius of chip can be made to reduce, and reduces cutting force, reduces vibration, meanwhile, drop
The low roughness value of finished surface.Cutting edge blunt round radius is larger, then cutting deformation increases, between cutter flank and workpiece
Friction also increases simultaneously, generates more cutting heat, increases cutting temperature, and the thermal softening effect for cutting material increases, to make
Alternation mechanical load dies down when cutter is cut out, and is suitable for interrupted cut.
Summary of the invention
(1) technical problems to be solved
In view of the deficiencies of the prior art, the present invention provides a kind of PCBN blade of the asymmetric cutting edge structure of tool arc,
Solving the problems, such as existing cutter, the rate of wear is fast in the cutting process, easy tipping.
(2) technical solution
To achieve the above object, a kind of PCBN blade of asymmetric cutting edge structure of tool arc is devised, which includes
Cutter hub 1 and point of a knife 2.The upper surface 3 of cutter hub 1 has embedding groove identical with 2 shape of point of a knife, and point of a knife 2 is closely mounted to cutter hub 1
In.The cutting edge part of the blade uses Passivation Treatment.Point of a knife cutting tip is by linear cutting edge (9,10), arc edge
(11,12) it forms, the radius of curvature that arc edge (11,12) projects on rake face is identical, arc edge (11,12) phase
The radius of edge answered is different, and wherein the cutting edge blunt round radius of arc edge 11 is less than the radius of edge of arc edge 12.Its
Middle arc edge 11 is suitable for continuous cutting, and arc edge 12 is suitable for interrupted cut.
Further, the PCBN blade of the asymmetric cutting edge structure of a kind of tool arc according to claim 1, it is special
Sign is: point of a knife cutting tip partial arc cutting edge (11,12) the blunt round radius value range is 0.1mm~0.2mm.
Further, two sections of circular arcs of arc edge (11,12) are excessively round and smooth, and arc edge 11 is to arc edge 12
Blunt round radius become larger, variation range be no more than 0.1mm.
Further, the blunt round radius of linear cutting edge (9,10) is definite value, and 9 blunt round radius of linear cutting edge is 0.1mm,
10 blunt round radius of linear cutting edge is 0.2mm.
Further, A point is the starting point of arc edge 11, and C point is the terminal of arc edge 12, and B point is point of a knife
The midpoint of circular arc, the blunt round radius of A point are greater than the blunt round radius of B point and C point, and the blunt round radius of C point is less than the blunt circle half of B point
The blunt round radius of diameter, A point is identical as the blunt round radius of linear cutting edge 10, blunt round radius and the linear cutting edge 9 of C point
Blunt round radius is identical.
Further, blunt circle circular arc and upper surface 6, side are being crossed in the center of circle of the blunt circle circular arc after blade cutting edge passivation
8a, 8b tangent point of contact perpendicular to upper surface 6, side 8a, 8b vertical line crosspoint on.
(3) beneficial effect
The present invention provides a kind of PCBN blades of the asymmetric cutting edge structure of tool arc.Have it is following the utility model has the advantages that
1, workpiece surface plastic strain is reduced, Plastic Damage is reduced, improves the surface quality of workpiece.
2, tool surface power thermal force is effectively reduced, cutting temperature is reduced, reduces tool wear, improves cutter life.
Detailed description of the invention
Invention is further explained for explanation with reference to the accompanying drawing:
Fig. 1 is blade schematic diagram of the present invention；
Fig. 2 is the view of point of a knife cutting tip of the present invention；
Fig. 3 is the sectional view in blunt circle region at A, at B, at C in Fig. 2 of the present invention；
Fig. 4 is the top view with working shaft-like part of the present invention；
Fig. 5 is the main view with working shaft-like part of the present invention.
Specific embodiment
As shown in Figure 1, a kind of PCBN blade of the asymmetric cutting edge structure of tool arc, turning insert is by cutter hub 1 and point of a knife 2
Composition.Cutter hub 1 is surrounded by 4 sides 5a, 5b of upper surface 3, lower surface 4 and vertical upper surface 3, lower surface 4, upper table
Face 3 and lower surface 4 are horizontal plane, and the intersection of upper surface 3 and side 5a, 5b to cutter hub 1 is passivated processing, blunt circle half
Diameter is that definite value is constant, and the blunt round radius of upper surface 3 and the side intersection 5a is 100 μm, and upper surface 3 is blunt with the side intersection 5b
Radius of circle is 200 μm.The upper surface of cutter hub 1 can be the diamond shape of triangle, square and all angles, at the middle part of cutter hub 1
There is through-hole, facilitates installation cutter holder.Point of a knife 2 is then semicircle shape, and same point of a knife 2 is by top face 6, lower surface 7 and perpendicular to upper and lower
Side 8a, the 8b on surface are surrounded, and the intersection of upper surface 6 and side 8 to point of a knife 2 is passivated processing, and makes its blunt circle
Radius is gradually reduced along tool arc.There is embedding groove identical with 7 shape of lower surface of point of a knife 2 in 1 upper surface 3 of cutter hub, it is described
Point of a knife 2 is closely in insertion cutter hub 1.Costly due to PCBN material, so 1 material selection hard alloy of cutter hub, and point of a knife 2 is selected
PCBN material.
The turning insert is diamond shaped insert, and point of a knife angle is that acute angle is conducive to machining, as shown in Figure 1, the angle of point of a knife 2
Degree is 80 degree.There are Passivation Treatment, the upper surface of point of a knife 2 in the upper surface of cutter hub 13 and lower surface 4 and the intersection side 5a, 5b
6, also there are Passivation Treatment in lower surface 7 and the intersection side 8a, 8b, and blunt from radiused cutting edge 11 to radiused cutting edge 12
Radius of circle gradually becomes smaller, and side 5a is identical with the blunt round radius of the side joint 8a, similarly side 5b and the side joint 8b
Blunt round radius is also identical.
As shown in Figure 2,3, Fig. 2 is the enlarged drawing of point of a knife 2, the blunt round radius of side 8b and 6 intersection starting point of upper surface
Be 200 μm, the blunt round radius at side 8a and 6 intersection end end of upper surface is 100 μm, along tool arc since A point blunt circle
Radius is gradually reduced.The corner radius of point of a knife 2 is rε=1.2mm.Fig. 3 is the sectional view of 3 points of Fig. 2, and A point is knife
The starting point of sharp arc radius, the blunt round radius r of A pointA=200 μm, C point is the terminal of corner radius, the blunt circle half of C point
Diameter rC=100 μm, for the blunt round radius range of B point between 100 μm~200 μm, the blunt round radius of B point is greater than the blunt circle half of C point
Diameter is less than the blunt round radius of A point, and B point is on the midpoint of tool arc, and A point is the starting endpoint of tool arc, A point it is blunt
Radius of circle is maximum value, and C point is the end endpoint of tool arc, and the blunt round radius of C point is minimum value.That is rC< rB< rA.Point of a knife
Circular arc starting point A and linear cutting edge 10 are tangent, and excessively round and smooth in intersection, the blunt round radius of linear cutting edge 10 with
The blunt round radius of A point is identical.The end endpoint C and linear cutting edge 9 of corner radius are tangent, and excessively round in intersection
Sliding, the blunt round radius of linear cutting edge 9 is identical as the blunt round radius of C point.In cutting tip, radiused cutting edge 11 and circular arc
Arc radius of the shape cutting edge 12 on rake face is identical, and tangent, excessively round and smooth in intersection points B.Due in radiused cutting edge
11, blunt circle circular arc and upper surface 6 and side 8a or side 8b are tangent and excessively round and smooth on 12, so the center of circle of blunt circle circular arc exists
Cross the blunt circle circular arc point of contact tangent with upper surface 6, side 8a or side 8b hanging down perpendicular to upper surface 6, side 8a or side 8b
In line crosspoint.Radiused cutting edge 11 has relatively small cutting edge blunt round radius can due to relatively small blunt round radius
So that the crimp radius of chip reduces, the crimp radius of chip is smaller, and to the fluctuation of cutting force with regard to smaller, cutting force fluctuation is small to be made
Cutting process is steady, reduces the roughness of finished surface, more advantageous to cutting process, so radiused cutting edge 11 is more suitable for
It is processed for continuous cutting.Radiused cutting edge 12 has relatively large cutting edge blunt round radius, due to relatively large blunt circle half
Diameter increases the friction between cutting deformation and cutter flank and workpiece, generates more cutting heat, increases cutting temperature,
The thermal softening for cutting material increases, so that alternation mechanical load dies down when cutting out cutter, so radiused cutting edge 12
It is more suitable for interrupted cut.
As shown in Figure 4,5, Fig. 4 is the top view of cutting process, and Fig. 5 is the main view of cutting process.In Fig. 4
It (I) is cutting tip, cutting tip is mounted on knife bar by centre bore, and (II) is clamping workpiece in machine chuck.Workpiece
(II) around center line C with speed V rotation, cutting tip (I) is moved along the direction arrow P, amount of feeding f, cutting depth apTable
Show.(III) it is the main cutting edge of cutting tip, plays a part of mainly to remove material.The setting angle of cutting tip is seen in Fig. 5,
Side rake and tool back angle are -5 degree.It will affect the stock-removing efficiency of machining in being gradually increased for blunt round radius, finished surface
Integrality, cutting temperature, cutter life etc..Due to being negative rake cutting, the pushing pressing effect between cutter and workpiece is better than
Shear action causes tangential force Fc to be greater than the power of other both directions Fz, Ft, is more advantageous to the removal of workpiece material, improves
The stock-removing efficiency of machining.Since cutting edge roundness blunt round radius is gradually increased, the contact area and cutter of cutter and chip with
The contact area of workpiece increases, and thermal convection area increases, and increases the heat spread out of from cutter also, cutting temperature is caused to reduce.
Due to the cutting edge structure design of rust circle, with the increase of blunt round radius, rust radius of circle structure effectively reduces power heat load
Lotus reduces cutting temperature, improves the shock resistance of cutter, extends cutting-tool's used life.
Claims (6)
1. a kind of PCBN blade of the asymmetric cutting edge structure of tool arc, which includes cutter hub (1) and point of a knife (2), cutter hub (1)
Upper surface there is embedding groove identical with point of a knife (2) shape, point of a knife (2) is closely mounted in cutter hub (1), and feature exists
In: the cutting edge part of the blade uses Passivation Treatment, and point of a knife cutting tip is by linear cutting edge (9,10), arc-shaped cutting
Sword (11,12) composition, wherein projection sword curvature of a curve radius of the radiused cutting edge (11,12) on rake face is identical, circular arc
The corresponding blunt round radius of shape cutting edge (11,12) is different, and wherein the blunt round radius of arc edge (11) is greater than arc edge
(12) blunt round radius.
2. a kind of PCBN blade of the asymmetric cutting edge structure of tool arc according to claim 1, it is characterised in that: described
Point of a knife cutting tip radiused cutting edge (11,12) blunt round radius value range is 0.1mm~0.2mm.
3. a kind of PCBN blade of the asymmetric cutting edge structure of tool arc according to claim 1, it is characterised in that: described
Two sections of circular arc intersections of radiused cutting edge (11,12) are excessively round and smooth, and radiused cutting edge (11) is to radiused cutting edge (12)
Blunt round radius gradually become smaller, variation range be no more than 0.1mm.
4. a kind of PCBN blade of the asymmetric cutting edge structure of tool arc according to claim 1, it is characterised in that: described
The blunt round radius of linear cutting edge (9,10) is definite value, and linear cutting edge (9) blunt round radius is 0.1mm, linear cutting
Sword (10) blunt round radius is 0.2mm.
5. a kind of PCBN blade of the asymmetric cutting edge structure of tool arc according to claim 1, it is characterised in that: described
A point is the starting point of radiused cutting edge (11), and C point is the terminal of radiused cutting edge (12), and B point is in tool arc
Point, the blunt round radius of A point are greater than the blunt round radius of B point and C point, and the blunt round radius of B point is greater than the blunt round radius of C point, A point it is blunt
Radius of circle is identical as the blunt round radius of linear cutting edge (9), the blunt round radius of C point and the blunt circle half of linear cutting edge (10)
Diameter is identical.
6. a kind of PCBN blade of the asymmetric cutting edge structure of tool arc according to claim 1, it is characterised in that: described
The center of circle of blunt circle circular arc after blade cutting edge passivation is vertical with the tangent point of contact upper surface 6, side 8a, 8b in blunt circle circular arc excessively
In upper surface 6, side 8a, 8b vertical line crosspoint on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710723003.1A CN109420779A (en) | 2017-08-22 | 2017-08-22 | A kind of PCBN blade of the asymmetric cutting edge structure of tool arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710723003.1A CN109420779A (en) | 2017-08-22 | 2017-08-22 | A kind of PCBN blade of the asymmetric cutting edge structure of tool arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109420779A true CN109420779A (en) | 2019-03-05 |
Family
ID=65498805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710723003.1A Pending CN109420779A (en) | 2017-08-22 | 2017-08-22 | A kind of PCBN blade of the asymmetric cutting edge structure of tool arc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109420779A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695385A (en) * | 2019-09-29 | 2020-01-17 | 厦门金鹭特种合金有限公司 | Cutting blade and cutter thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080273930A1 (en) * | 2004-09-06 | 2008-11-06 | Inge Svenningsson | Milling Tool, a Cutting Insert for Milling Tool as Well as a Solid Milling Tool |
| CN101695760A (en) * | 2009-10-29 | 2010-04-21 | 株洲钻石切削刀具股份有限公司 | PCBN cutter blade with knifepoint provided with scrap sweeping grooves |
| CN104439317A (en) * | 2014-09-18 | 2015-03-25 | 厦门金鹭特种合金有限公司 | Cutting blade with multiple cutting edge combinations |
| CN105081427A (en) * | 2014-05-05 | 2015-11-25 | 天津职业技术师范大学 | Cutting edge with constant gradient and unit cutting energy and changing arc radius |
| CN105269282A (en) * | 2014-06-03 | 2016-01-27 | 山特维克知识产权股份有限公司 | Method of manufacturing a cutting tool and a cutting tool |
| CN207479632U (en) * | 2017-08-22 | 2018-06-12 | 江苏扬碟钻石工具有限公司 | A kind of PCBN blades of the asymmetric cutting edge structure of tool arc |
-
2017
- 2017-08-22 CN CN201710723003.1A patent/CN109420779A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080273930A1 (en) * | 2004-09-06 | 2008-11-06 | Inge Svenningsson | Milling Tool, a Cutting Insert for Milling Tool as Well as a Solid Milling Tool |
| CN101695760A (en) * | 2009-10-29 | 2010-04-21 | 株洲钻石切削刀具股份有限公司 | PCBN cutter blade with knifepoint provided with scrap sweeping grooves |
| CN105081427A (en) * | 2014-05-05 | 2015-11-25 | 天津职业技术师范大学 | Cutting edge with constant gradient and unit cutting energy and changing arc radius |
| CN105269282A (en) * | 2014-06-03 | 2016-01-27 | 山特维克知识产权股份有限公司 | Method of manufacturing a cutting tool and a cutting tool |
| CN104439317A (en) * | 2014-09-18 | 2015-03-25 | 厦门金鹭特种合金有限公司 | Cutting blade with multiple cutting edge combinations |
| CN207479632U (en) * | 2017-08-22 | 2018-06-12 | 江苏扬碟钻石工具有限公司 | A kind of PCBN blades of the asymmetric cutting edge structure of tool arc |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695385A (en) * | 2019-09-29 | 2020-01-17 | 厦门金鹭特种合金有限公司 | Cutting blade and cutter thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201862792U (en) | Grooving cutter | |
| CN207479632U (en) | A kind of PCBN blades of the asymmetric cutting edge structure of tool arc | |
| CN109420779A (en) | A kind of PCBN blade of the asymmetric cutting edge structure of tool arc | |
| CN203245428U (en) | Sharp milling cutter for bolt supporting surface | |
| CN202367222U (en) | Novel cutter of numerical control machine tool | |
| CN113857508B (en) | Turning blade with actively controlled chip | |
| CN208758633U (en) | It is a kind of for cutting the indexable turning blade of high temperature alloy | |
| CN201855956U (en) | Outer circular knife | |
| CN206009960U (en) | A kind of composite milling cutter | |
| CN203636081U (en) | Broach | |
| CN202461639U (en) | High-efficiency inner-cooling type milling cutter for titanium alloy | |
| CN201799681U (en) | Cutter of milling machine | |
| CN103121124B (en) | A kind of bolt support face milling cutters and utilize this milling cutter processing connecting rod cap bolt support surface processing technique | |
| CN106112082B (en) | A kind of not isoclinic angle PCD milling cutters of processing fibrous composite | |
| CN2829941Y (en) | Cutting tools | |
| CN204159905U (en) | The indexable V-knife sheet of lathe tool | |
| CN203679377U (en) | Profile cutter used for machining sides and chamfers | |
| CN204094163U (en) | A kind of twolip falls angle knife | |
| CN108746683A (en) | A kind of indexable turning blade for cutting high temperature alloy | |
| CN203956124U (en) | The indexable V-knife sheet of lathe tool | |
| CN215848973U (en) | Cutter for processing glass blind hole and appearance | |
| CN105004623B (en) | A kind of workpiece of new acquisition drilling chip simulation | |
| CN214720628U (en) | Cutting-off tool | |
| CN204159944U (en) | Apex point centering countersink | |
| CN204381461U (en) | A kind of indexable pentagon grooving cutter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190305 |