CN211539657U - Novel nonferrous metal milling blade - Google Patents
Novel nonferrous metal milling blade Download PDFInfo
- Publication number
- CN211539657U CN211539657U CN201922245918.3U CN201922245918U CN211539657U CN 211539657 U CN211539657 U CN 211539657U CN 201922245918 U CN201922245918 U CN 201922245918U CN 211539657 U CN211539657 U CN 211539657U
- Authority
- CN
- China
- Prior art keywords
- liquid
- blade
- fixed
- steel ball
- metal milling
- 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.)
- Expired - Fee Related
Links
- 238000003801 milling Methods 0.000 title claims abstract description 40
- 239000002184 metal Substances 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 82
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 239000011550 stock solution Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000000110 cooling liquid Substances 0.000 claims description 17
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 239000002826 coolant Substances 0.000 abstract description 21
- 230000008901 benefit Effects 0.000 abstract description 14
- 101100234547 Caenorhabditis elegans rod-1 gene Proteins 0.000 description 6
- 238000003754 machining Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The utility model discloses a novel nonferrous metal milling blade, including connecting rod, first blade, second blade and coolant liquid conveying mechanism, the utility model discloses a set up the mechanism of pushing up in the bracing piece inside, in the bracing piece rotation in-process, can drive diaphragm and flange and move, when the flange rotates to hinder liquid steel ball bottom, can be through the broken face of upper end will hinder liquid steel ball top up, make the coolant liquid discharge through stock solution frame bottom opening, changed originally and carried out the refrigerated mode to the outside, can the coolant liquid carry out the advantage of carrying out the fast transport when making the blade mill; through having set up coolant liquid conveying mechanism inside the bracing piece, when the blade did not rotate, hinder the liquid steel ball and can block stock solution frame bottom stock solution mouth, prevent that the coolant liquid from flowing out, reached and to have prevented the extravagant advantage of coolant liquid.
Description
Technical Field
The utility model relates to a mill the relevant field of blade, specifically a novel non ferrous metal milling blade.
Background
A large number of milling blades are used by machining factories at present, in order to meet the requirements of machining, achieve the milling effect and guarantee the smoothness requirement of a workpiece after machining, a plurality of factories adopt hard alloy milling blades, the smoothness requirement can be met only by primary rough milling and secondary finish milling, the milling efficiency of twice is low, the hard alloy milling blades are applied to the aspect of machining, the hard alloy milling blades are poor in wear resistance, and the service life of the blades is short.
At this time, the nonferrous metal milling blade is required to be used, in the use process of the nonferrous metal milling blade, a large amount of heat is often generated, if the nonferrous metal milling blade is not cooled, the service life of the nonferrous metal milling blade can be shortened, the nonferrous metal milling blade generally cools the nonferrous metal milling blade by using external cooling liquid at present, so that the internal cooling effect of the nonferrous metal milling blade is poor, the cooling liquid is always kept on, the resource waste is caused, the internal part of the blade is not easily cooled by the existing nonferrous metal milling blade, and the cooling liquid is not easily automatically conveyed when the blade is milled, and the cooling liquid is wasted.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned insufficiency, the utility model provides a novel non ferrous metal milling blade here.
The utility model is realized in such a way, a novel nonferrous metal milling blade is constructed, the device comprises a connecting rod, a first blade, a second blade and a cooling liquid conveying mechanism, the connecting rod is fixed with the bottom of the supporting rod into a whole, the supporting rod is tightly fixed with the edge of the bottom of the tool bit through electric welding, the cooling liquid conveying mechanism is fixedly arranged at the bottom of the connecting rod, the cooling liquid conveying mechanism comprises a rotating ring, a liquid feeding pipe, a liquid storage frame, a liquid storage tank, a limiting rod, a reset spring, a liquid blocking steel ball and an upper jacking mechanism, the rotating ring is in rotating fit with the bottom of the connecting rod, the liquid feeding pipe penetrates through the left end of the rotating ring and is in seamless connection with the left end of the rotating ring, one end of the liquid feeding pipe, which is far away from the rotating ring, is communicated with the upper end of the liquid storage frame, the limiting rod is in connection with the left, and the reset spring is closely fixed with the lower end of the limiting rod, the liquid blocking steel ball is embedded into the inner side of the lower end of the liquid storage frame in a clearance fit mode, a liquid storage tank is arranged in the liquid storage frame, the liquid blocking steel ball is closely attached to the upper end of the upward pushing mechanism, and the upward pushing mechanism is fixedly installed at the left lower end in the supporting rod.
Preferably, the top edge of the cutter head is equidistantly distributed with fixing grooves, the fixing grooves are locked and fixed with the middle part of the first cutter blade through screws, and the cutter head is fixedly connected with the bottom of the second cutter blade through screws.
Preferably, it includes fixed block, axis of rotation, dead lever, diaphragm and flange to go up top mechanism, the fixed block passes through electric welding and the inside left lower extreme fixed connection of bracing piece, the dead lever passes through axis of rotation and the inboard normal running fit of fixed block, the dead lever passes through electric welding and diaphragm left end seamless connection, diaphragm and flange bottom closely fixed, hinder liquid steel ball and the flange upper end closely laminate.
Preferably, the number of the fixing blocks is two, and the fixing blocks are symmetrically distributed along the front side and the rear side of the left lower end inside the supporting rod.
Preferably, the cross sections of the two fixing blocks are semicircular, and the rotating shafts are movably nested inside the two fixing blocks.
Preferably, the convex plate is in an isosceles trapezoid shape, and the front end and the upper end of the convex plate are provided with rounded corners.
Preferably, the limiting rods are arranged in two, and are symmetrically distributed along the left side and the right side inside the liquid storage frame.
Preferably, the inner edge of the rotating ring is provided with an annular sliding groove, and the inner surface of the annular sliding groove is smooth.
Preferably, the return spring is made of spring steel and has excellent elastic potential energy.
Preferably, the rotating shaft is made of carbon steel and has strong corrosion resistance.
The utility model has the advantages of as follows: the utility model discloses an improve and provide a novel non ferrous metal milling blade here, compare with equipment of the same type, have following improvement:
the method has the advantages that: a novel non ferrous metal milling blade through inside the mechanism that pushes up that has set up at the bracing piece, rotates the in-process at the bracing piece, can drive diaphragm and flange and remove, when the flange rotates to hindering liquid steel ball bottom, can will hinder liquid steel ball up through the broken face of upper end, makes the coolant liquid discharge through stock solution frame bottom opening, has changed originally and has carried out refrigerated mode to the outside, can the coolant liquid carry out quick advantage of carrying when making the blade mill.
The advantages are two: a novel non ferrous metal milling blade, through at the inside coolant liquid conveying mechanism that has set up of bracing piece, when the blade did not rotate, hinder liquid steel ball and can stop stock solution frame bottom stock solution mouth, prevent that the coolant liquid from flowing out, reached and can prevent the extravagant advantage of coolant liquid.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a front view structural schematic diagram of the milling insert of the present invention;
fig. 3 is a schematic view of the sectional structure of the milling insert of the present invention;
FIG. 4 is a schematic sectional view of the coolant conveying mechanism of the present invention;
fig. 5 is a schematic side view of the structural jacking mechanism of the present invention.
Wherein: the device comprises a connecting rod-1, a supporting rod-2, a tool bit-3, a fixing groove-4, a first blade-5, a second blade-6, a cooling liquid conveying mechanism-7, a rotating ring-71, a liquid conveying pipe-72, a liquid storage frame-73, a liquid storage tank-74, a limiting rod-75, a reset spring-76, a liquid blocking steel ball-77, an upward pushing mechanism-78, a fixing block-781, a rotating shaft-782, a fixing rod-783, a transverse plate-784 and a convex plate-785.
Detailed Description
The present invention will be described in detail with reference to the accompanying fig. 1-5, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a novel nonferrous metal milling blade through improvement, which comprises a connecting rod 1, a first blade 5, a second blade 6 and a cooling liquid conveying mechanism 7, wherein the connecting rod 1 is fixed with the bottom of a supporting rod 2 into a whole, the supporting rod 2 is tightly fixed with the bottom edge of a tool bit 3 through electric welding, the cooling liquid conveying mechanism 7 is fixedly arranged at the bottom of the connecting rod 1, the cooling liquid conveying mechanism 7 comprises a rotating ring 71, a liquid feeding pipe 72, a liquid storage frame 73, a liquid storage tank 74, a limiting rod 75, a reset spring 76, a liquid blocking steel ball 77 and an upper jacking mechanism 78, the rotating ring 71 is in rotating fit with the bottom of the connecting rod 1, the liquid feeding pipe 72 penetrates through the left end of the rotating ring 71, the liquid feeding pipe 72 is in seamless connection with the left end of the rotating ring 71, one end of the liquid feeding pipe 72, which is far away from the rotating ring 71, is communicated with the upper end of the liquid storage frame 73, the limiting rod 75 is in elastic, and reset spring 76 and gag lever post 75 lower extreme closely are fixed, do benefit to and play the effect that resets to hindering liquid steel ball 77, hinder liquid steel ball 77 and adopt clearance fit's mode to imbed in stock solution frame 73 lower extreme inboard, do benefit to and play the effect of choked flow to the coolant liquid, stock solution frame 73 is inside to be seted up reservoir 74, hinders liquid steel ball 77 and pushes up the mechanism 78 upper end and closely laminates on, pushes up mechanism 78 fixed mounting in bracing piece 2 inside left lower extreme.
Further, 3 top edge equidistance of tool bit distributes there are fixed slots 4, fixed slot 4 passes through the screw and 5 middle part locking of first blade are fixed, tool bit 3 passes through screw and 6 bottom fixed connection of second blade.
Further, it includes fixed block 781, axis of rotation 782, dead lever 783, diaphragm 784 and flange 785 to go up top mechanism 78, fixed block 781 is through electric welding and the inside left lower extreme fixed connection of bracing piece 2, dead lever 783 is through axis of rotation 782 and the inboard normal running fit of fixed block 781, dead lever 783 is through electric welding and diaphragm 784 left end seamless connection, diaphragm 784 is closely fixed with flange 785 bottom, hinder liquid steel ball 77 and closely laminate in the flange 785 upper end.
Further, the fixed block 781 is provided with two altogether to both sides are the symmetrical form along bracing piece 2 inside left lower extreme front and back and distribute around the fixed block 781, do benefit to and play the effect of carrying out fixed connection to axis of rotation 782.
Further, two fixed block 781 cross section all is semicircle form to axis of rotation 782 activity nestification is in two fixed block 781 is inboard, does benefit to the effect that makes axis of rotation 782 steady rotation.
Further, the convex plate 785 is in an isosceles trapezoid shape, and rounded corners are arranged at the front end and the upper end of the convex plate 785, so that the function of jacking the liquid blocking steel balls 77 is facilitated.
Further, the limiting rods 75 are arranged in two, and the limiting rods 75 are symmetrically distributed along the left side and the right side inside the liquid storage frame 73, so that the effect of fixing the return spring 76 is facilitated.
Furthermore, the inner edge of the rotating ring 71 is provided with an annular sliding groove 711, and the inner surface of the annular sliding groove 711 is smooth, so that the effect of enabling the support rod 2 to rotate stably is achieved.
Further, the return spring 76 is made of spring steel, and has excellent elastic potential energy.
Furthermore, the rotating shaft 782 is made of carbon steel and has strong corrosion resistance.
The utility model provides a novel nonferrous metal milling blade through improvement, and the working principle is as follows;
firstly, before use, the nonferrous metal milling blade is horizontally placed, then the liquid sending pipe 72 is connected with a cooling liquid sending pipe, and the support rod 2 is fixed at the upper end of a driving device;
secondly, when the milling device is used, the supporting rod 2 and the tool bit 3 at the upper end of the connecting rod 1 are driven to rotate through a driving device, so that the first blade 5 and the second blade 6 at the upper end of the tool bit 3 mill an object to be milled;
thirdly, in the rotating process of the support rod 2, the transverse plate 784 and the convex plate 785 can be driven to move, when the convex plate 785 rotates to the bottom of the liquid blocking steel ball 77, the liquid blocking steel ball 77 can be pushed upwards through a broken surface at the upper end, the liquid blocking steel ball 77 presses the reset spring 76 to deform and contract, cooling liquid is discharged through an opening at the bottom of the liquid storage frame 73, the interior of the cutter head 3 is cooled, the first blade 5 and the second blade 6 are cooled, the original mode of cooling the exterior is changed, and the cooling liquid can be rapidly conveyed when the blades are milled;
fourthly, through having set up coolant liquid conveying mechanism 7 inside bracing piece 2, when the blade did not rotate, reset spring 76 drove and hinders liquid steel ball 77 and stock solution frame 73 bottom and closely laminate, makes and hinders liquid steel ball 77 and block stock solution frame 73 bottom stock solution mouth, prevents that the coolant liquid from flowing out, can prevent that the coolant liquid is extravagant, and wherein, dead lever 783 plays the effect of carrying out fixed connection to diaphragm 784.
The utility model provides a novel nonferrous metal milling blade through improving, through set up the mechanism 78 of pushing up in bracing piece 2 inside, in the rotation process of bracing piece 2, can drive diaphragm 784 and flange 785 and move, when flange 785 rotates to the bottom of hindering liquid steel ball 77, can be through the broken face of upper end will hinder liquid steel ball 77 to push up, make the coolant liquid discharge through stock solution frame 73 bottom opening, changed originally and carried out the refrigerated mode to the outside, can carry on the advantage transported fast to the coolant liquid when making the blade mill; through having set up coolant liquid conveying mechanism 7 inside bracing piece 2, when the blade did not rotate, hinder liquid steel ball 77 and can block stock solution frame 73 bottom stock solution mouth, prevent that the coolant liquid from flowing out, reached and to have prevented the extravagant advantage of coolant liquid.
The basic principle and the main characteristics of the utility model and the advantages of the utility model have been shown and described above, and the utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the record of the description with the drawing, and the concrete connection mode of each part all adopts conventional means such as ripe bolt rivet among the prior art, welding, and machinery, part and equipment all adopt prior art, conventional model, and conventional connection mode in the prior art is adopted in addition to circuit connection, and the details are not repeated here.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A novel non-ferrous metal milling blade comprises a connecting rod (1), a first blade (5) and a second blade (6), wherein the connecting rod (1) and the bottom of a supporting rod (2) are fixed into a whole, and the supporting rod (2) is tightly fixed with the edge of the bottom of a tool bit (3) through electric welding;
the method is characterized in that: the cooling device is characterized by further comprising a cooling liquid conveying mechanism (7), the cooling liquid conveying mechanism (7) is fixedly installed at the bottom of the connecting rod (1), the cooling liquid conveying mechanism (7) comprises a rotating ring (71), a liquid sending pipe (72), a liquid storage frame (73), a liquid storage tank (74), a limiting rod (75), a reset spring (76), a liquid blocking steel ball (77) and an upper jacking mechanism (78), the rotating ring (71) is in rotating fit with the bottom of the connecting rod (1), the liquid sending pipe (72) penetrates through the left end of the rotating ring (71), the liquid sending pipe (72) is in seamless connection with the left end of the rotating ring (71), one end, far away from the rotating ring (71), of the liquid sending pipe (72) is communicated with the upper end of the liquid storage frame (73), the limiting rod (75) is in connection with the left end inside the liquid storage frame (73) through powerful glue, the liquid blocking steel ball (77) is in elastic connection with the lower end of the limiting, and reset spring (76) and gag lever post (75) lower extreme closely are fixed, hinder liquid steel ball (77) and adopt clearance fit's mode to imbed in stock solution frame (73) lower extreme inboard, stock solution frame (73) inside has seted up reservoir (74), hinder liquid steel ball (77) and go up the mechanism (78) upper end and closely laminate, it constructs (78) fixed mounting in bracing piece (2) inside left lower extreme to go up to push up.
2. A novel non-ferrous metal milling insert as claimed in claim 1 wherein: the fixed slot (4) is distributed to tool bit (3) top edge equidistance, fixed slot (4) are fixed with first blade (5) middle part locking through the screw, tool bit (3) are through screw and second blade (6) bottom fixed connection.
3. A novel non-ferrous metal milling insert as claimed in claim 1 wherein: go up top mechanism (78) and include fixed block (781), axis of rotation (782), dead lever (783), diaphragm (784) and flange (785), fixed block (781) is through electric welding and bracing piece (2) inside left lower extreme fixed connection, dead lever (783) are through axis of rotation (782) and the inboard normal running fit of fixed block (781), dead lever (783) are through electric welding and diaphragm (784) left end seamless connection, diaphragm (784) are closely fixed with flange (785) bottom, hinder liquid steel ball (77) and closely laminate in flange (785) upper end.
4. A novel non-ferrous metal milling insert according to claim 3, characterized in that: the two fixing blocks (781) are arranged, and the fixing blocks (781) are symmetrically distributed along the front side and the rear side of the left lower end in the supporting rod (2).
5. A novel non-ferrous metal milling insert according to claim 4, characterized in that: two fixed block (781) cross section all is semicircle form to axis of rotation (782) activity nestification is in two fixed block (781) are inboard.
6. A novel non-ferrous metal milling insert according to claim 3, characterized in that: the convex plate (785) is in an isosceles trapezoid shape, and the front end and the upper end of the convex plate (785) are provided with rounded corners.
7. A novel non-ferrous metal milling insert as claimed in claim 1 wherein: the limiting rods (75) are arranged in two, and the limiting rods (75) are symmetrically distributed along the left side and the right side inside the liquid storage frame (73).
8. A novel non-ferrous metal milling insert as claimed in claim 1 wherein: the inner edge of the rotating ring (71) is provided with an annular sliding groove (711), and the inner surface of the annular sliding groove (711) is smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922245918.3U CN211539657U (en) | 2019-12-16 | 2019-12-16 | Novel nonferrous metal milling blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922245918.3U CN211539657U (en) | 2019-12-16 | 2019-12-16 | Novel nonferrous metal milling blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211539657U true CN211539657U (en) | 2020-09-22 |
Family
ID=72506600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922245918.3U Expired - Fee Related CN211539657U (en) | 2019-12-16 | 2019-12-16 | Novel nonferrous metal milling blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211539657U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079125A (en) * | 2023-04-10 | 2023-05-09 | 长春工业大学 | Special composite cutter for low-damage spiral milling and expanding of carbon fiber composite material |
-
2019
- 2019-12-16 CN CN201922245918.3U patent/CN211539657U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079125A (en) * | 2023-04-10 | 2023-05-09 | 长春工业大学 | Special composite cutter for low-damage spiral milling and expanding of carbon fiber composite material |
| CN116079125B (en) * | 2023-04-10 | 2023-06-27 | 长春工业大学 | Special composite cutter for low-damage spiral milling and expanding of carbon fiber composite material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210108281A1 (en) | Portable multi-azimuth ultrasonic-assisted vibration rolling device and application method thereof | |
| CN211539657U (en) | Novel nonferrous metal milling blade | |
| CN112720254B (en) | Heavy-load grinding wheel based on self-adaptive cooling of normal grinding force of grinding area | |
| CN102909430A (en) | Knife-block machine-clamped type blade-inlaid circular saw web | |
| CN210208809U (en) | Vertical milling cutter of whole alloy | |
| CN105057778A (en) | Solid carbide internal and external chamfering combined broaching tool | |
| CN215999836U (en) | Interior spiral shell is grinding device for tee bend processing convenient to clearance piece | |
| CN212600663U (en) | Carbide tool bit back knife face abrasive machining combination frock | |
| CN210588076U (en) | Special machining milling and drilling combined machining tool | |
| CN204135418U (en) | For the cylindrical drill of aluminium alloy boring | |
| CN207027102U (en) | A kind of broaching machine cutter head iron filings cleaning power driving brush | |
| CN208162707U (en) | A kind of ultra-thin hard alloy saw blade milling piece being conveniently replaceable blade | |
| CN218798175U (en) | Wear-resistant hot roll | |
| CN206597944U (en) | A kind of drill bit with plasma thermal diffusion layer | |
| CN200991763Y (en) | Turning tool device for mechanical machining | |
| CN214557565U (en) | From rectifying deep hole system of processing | |
| CN215511733U (en) | Ultrahigh-hardness tool bit | |
| CN221695382U (en) | Alloy end mill capable of realizing self-cooling | |
| CN218983308U (en) | Ball end milling cutter capable of being positioned and butted quickly | |
| CN211614489U (en) | Die casting's machine tool | |
| CN219665127U (en) | Air supporting main shaft structure of leading cooling | |
| CN219787385U (en) | Diamond cutter with long service life | |
| CN209551108U (en) | A kind of expansion is attacked and bipyramid facing multifunctional combined machine tool | |
| CN206967132U (en) | A kind of complex milling machine tool rotary power head | |
| CN201768952U (en) | Heat exchange tube head aligning device |
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: 20200922 |