CN116197975A - Hard alloy cutter head tooth seat structure of woodworking circular saw blade - Google Patents
Hard alloy cutter head tooth seat structure of woodworking circular saw blade Download PDFInfo
- Publication number
- CN116197975A CN116197975A CN202310143778.7A CN202310143778A CN116197975A CN 116197975 A CN116197975 A CN 116197975A CN 202310143778 A CN202310143778 A CN 202310143778A CN 116197975 A CN116197975 A CN 116197975A
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- Prior art keywords
- tooth
- saw blade
- cutter
- cutter tooth
- saw
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- 239000000956 alloy Substances 0.000 title claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 30
- 230000000712 assembly Effects 0.000 claims abstract description 12
- 238000000429 assembly Methods 0.000 claims abstract description 12
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
- B27B33/02—Structural design of saw blades or saw teeth
- B27B33/08—Circular saw blades
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
Abstract
The invention discloses a hard alloy cutter bit tooth seat structure of a woodworking circular saw blade, which relates to the technical field of circular saw blade processing and comprises a saw blade body and cutter tooth assemblies, wherein a plurality of saw tooth assemblies are arranged on the outer circumference of the saw blade body, and chip grooves are formed between any two adjacent saw tooth assemblies. According to the invention, through the arrangement of the tooth holder limiting structure and the cutter tooth assembly, the cutter tooth in the cutter tooth assembly is provided with four welding surfaces, and the mounting groove in the tooth holder limiting structure is provided with the first inner side surface, the second inner side surface, the third inner side surface and the fourth inner side surface, so that the four welding surfaces of the cutter tooth are in fit welding fixation with the first inner side surface, the second inner side surface, the third inner side surface and the fourth inner side surface, the stability of the cutter tooth in operation is ensured, and meanwhile, the welding area between the first inner side surface and the cutter tooth assembly is larger than the welding area between the fourth inner side surface and the cutter tooth assembly, so that the cutter tooth is in a semi-wrapped state when being placed in the mounting groove, and the anti-falling force of the cutter tooth in high-speed rotation is enhanced.
Description
Technical Field
The invention relates to the technical field of circular saw blade processing, in particular to a hard alloy cutter bit tooth seat structure of a woodworking circular saw blade.
Background
The traditional hard alloy tooth circular saw blade consists of a saw blade body and hard alloy cutter teeth, wherein the hard alloy cutter teeth are fixed on the machined saw blade body through welding, as shown in fig. 8 and 9, 100 is the saw blade body, 101 is the alloy cutter teeth, and two sides of one end of each alloy cutter tooth 101 are welded and fixed with the saw blade body 100, but the arrangement is inconvenient in use because the alloy cutter teeth are easy to collapse and fall off due to continuous acting force during sawing. Meanwhile, the arrangement of the existing circular saw blade is inconvenient for discharging scraps generated during sawing, and when sawing, the saw blade body is damaged easily due to the large sawing stress generated by the saw blade body.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide the hard alloy cutter head tooth holder structure of the woodworking circular saw blade, and through the arrangement of the tooth holder limiting structure, four sides of one end of the cutter tooth are welded and fixed with a plurality of inner side surfaces of the mounting groove on the saw blade body, and the welding area of the cutter tooth and the first inner side surface is larger than the welding area of the second inner side surface, so that the anti-falling force of the cutter tooth in high-speed rotation is enhanced; through the arrangement of the cutter tooth assembly, the cutter teeth in the cutter tooth assembly are matched and welded with the plurality of inner side surfaces of the mounting groove, so that the stability of welding is ensured, and meanwhile, the cutter teeth are obliquely arranged in the mounting groove, so that the sawing instant area of the cutter teeth is reduced, and chip removal is easy; through the setting of saw cutting subassembly, saw cutting stress concentration when saw cutting can be prevented to the convex part in the saw cutting subassembly, and then the saw blade lamellar body has been protected.
The aim of the invention can be achieved by the following technical scheme: the novel saw blade comprises a saw blade body and a cutter tooth assembly, wherein a plurality of saw tooth assemblies are arranged on the outer circumference of the saw blade body, and chip grooves are formed between any two adjacent saw tooth assemblies; the side wall of the chip groove is provided with a tooth seat limiting structure, and the cutter tooth assembly is arranged on the tooth seat limiting structure.
The tooth seat limiting structure comprises a mounting groove formed in the side wall of the chip removal groove, wherein the mounting groove is provided with a first inner side surface, a second inner side surface, a third inner side surface and a fourth inner side surface, the first inner side surface is connected with the second inner side surface, the second side surface is connected with the third inner side surface, and the third side surface is connected with the fourth inner side surface; one end of the cutter tooth assembly is welded with four side surfaces.
As a further scheme of the invention: the welding area between the first inner side surface and the cutter tooth assembly is larger than the welding area between the fourth inner side surface and the cutter tooth assembly.
As a further scheme of the invention: the first inner side surface and the fourth inner side surface are inclined by 0.3 to 1.2 degrees relative to the horizontal plane where the axis of the blade body is located.
As a further scheme of the invention: the second inner side surface and the third inner side surface are inclined by 0.3 to 1.2 degrees relative to the vertical surface where the thickness of the saw blade body is located.
As a further scheme of the invention: the sawtooth assembly comprises sawteeth, convex parts are arranged on the sawteeth, and chip grooves are formed between any two adjacent sawteeth.
As a further scheme of the invention: the chip groove is arranged to be an obtuse angle, and the bottom curve of the chip groove is smoothly arranged.
As a further scheme of the invention: the cutter tooth assembly comprises cutter teeth made of hard alloy materials, and four welding surfaces respectively matched with the first inner side face, the second inner side face, the third inner side face and the fourth inner side face of the mounting groove are arranged at one end of each cutter tooth.
As a further scheme of the invention: the other end of the cutter tooth is a sawing end, and the end is arranged at an acute angle.
As a further scheme of the invention: the cutter tooth is provided with a first saw section and a second saw section, and the thickness difference of the first saw section and the second saw section is 0.14mm.
The invention has the beneficial effects that:
1. through the arrangement of the tooth holder limiting structure and the cutter tooth assembly, the cutter tooth in the cutter tooth assembly is provided with four welding surfaces, the mounting groove in the tooth holder limiting structure is provided with a first inner side surface, a second inner side surface, a third inner side surface and a fourth inner side surface, the four welding surfaces of the cutter tooth are matched and welded with the first inner side surface, the second inner side surface, the third inner side surface and the fourth inner side surface, so that the stability of the cutter tooth in operation is ensured, and meanwhile, the welding area between the first inner side surface and the cutter tooth assembly is larger than the welding area between the fourth inner side surface and the cutter tooth assembly, so that the cutter tooth is in a semi-wrapping state when being placed in the mounting groove, and the anti-falling force of the cutter tooth in high-speed rotation is enhanced;
2. by obliquely installing the cutter teeth in the installation groove, when the saw blade body drives the cutter teeth to work, the sawing instant area of the cutter teeth is reduced, and chip removal is easy;
3. by setting the chip removal groove to be an obtuse angle and smoothly setting the bottom curve of the chip removal groove, the chip removal groove can better carry out chip removal work;
4. through the setting of saw cutting subassembly, saw cutting stress concentration when saw cutting can be prevented to the convex part in the saw cutting subassembly, offset part saw cutting stress, and then protected the saw blade lamellar body.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the front view of the present invention;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1 at B;
FIG. 3 is an enlarged schematic view of FIG. 1 at C;
FIG. 4 is a schematic diagram of a front view of the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 4 at D;
FIG. 6 is a schematic view of the overall structure of the cutter tooth assembly according to the present invention;
FIG. 7 is a schematic diagram of the overall structure of the cutter tooth assembly according to the present invention;
FIG. 8 is a schematic elevational view of a circular saw blade of the prior art;
fig. 9 is an enlarged schematic view of the structure at a in fig. 8.
In the figure: 1. a blade body; 2. a cutter tooth assembly; 3. a sawtooth assembly; 31. saw teeth; 32. a convex portion; 4. a chip removal groove; 5. a tooth holder limiting structure; 6. a mounting groove; 7. a first inner side; 8. a second inner side; 9. a third inner side; 10. a fourth inner side; 11. cutter teeth; 12. sawing the end; 13. a first saw cut; 14. and a second saw cut.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-7, the cemented carbide cutter head tooth holder structure of the woodworking circular saw blade comprises a saw blade body 1 and cutter tooth assemblies 2, wherein a plurality of saw tooth assemblies 3 are arranged on the outer circumference of the saw blade body 1, chip grooves 4 are formed between any two adjacent saw tooth assemblies 3, and the chip grooves 4 are used for discharging waste chips generated by sawing of the saw tooth assemblies 3; meanwhile, a tooth seat limiting structure 5 is arranged on the side wall of the chip groove 4, and the cutter tooth assembly 2 is arranged on the tooth seat limiting structure 5.
As shown in fig. 3 and 5, for the arrangement of the tooth holder limiting structure 5, the tooth holder limiting structure 5 includes a mounting groove 6 formed on a side wall of the chip groove 4, the mounting groove 6 is used as a tooth holder when the cutter tooth assembly 2 is mounted, the mounting groove 6 has a first inner side 7, a second inner side 8, a third inner side 9 and a fourth inner side 10, and the first inner side 7 is connected with the second inner side 8, the second side is connected with the third inner side 9, and the third side is connected with the fourth inner side 10; one end of the cutter tooth assembly 2 is welded with four sides. Specifically, the cutter tooth assembly 2 comprises a cutter tooth 11 made of hard alloy materials, one end of the cutter tooth 11 is provided with four welding surfaces, the four welding surfaces are respectively arranged in one-to-one correspondence with a first inner side surface 7, a second inner side surface 8, a third inner side surface 9 and a fourth inner side surface 10 of the mounting groove 6, the four welding surfaces are respectively matched with the first inner side surface 7, the second inner side surface 8, the third inner side surface 9 and the fourth inner side surface 10 of the mounting groove 6, and the four inner side surfaces are respectively welded and fixed with the four welding surfaces on the cutter tooth 11, so that the stability of the cutter tooth 11 during working is improved; meanwhile, the welding area between the first inner side surface 7 and the cutter tooth assembly 2 is larger than the welding area between the fourth inner side surface 10 and the cutter tooth assembly 2, and the cutter tooth 11 is in a semi-wrapping state when being placed in the mounting groove 6, so that the anti-falling force of the cutter tooth 11 in high-speed rotation is enhanced.
As shown in fig. 5, for the arrangement of the first inner side 7, the second inner side 8, the third inner side 9 and the fourth inner side 10, the arrangement of the first inner side 7 and the fourth inner side 10 is inclined by 0.3 to 1.2 degrees with respect to the horizontal plane of the axis of the blade body 1; the second inner side 8 and the third inner side 9 are each provided at an inclination of 0.3 to 1.2 degrees with respect to the vertical plane in which the thickness of the blade body 1 is located.
As shown in fig. 5-7, the end of the cutter tooth 11 far away from the mounting groove 6 is a sawing end 12, and the sawing end 12 is arranged to be an acute angle; meanwhile, the cutter tooth 11 is provided with a first saw cut surface 13 and a second saw cut surface 14, the thickness difference of the first saw cut surface 13 and the second saw cut surface 14 is 0.14mm, and the error is 0.07mm.
Further, after the cutter tooth 11 is mounted in the mounting groove 6, the cutter tooth 11 and the mounting groove 6 are inclined by a certain angle (preferably 14 degrees, and the error is up and down 2 degrees), so that the arrangement can reduce the sawing instant area of the cutter tooth 11 and facilitate chip removal, and simultaneously reduce sawing impact force. The sawing efficiency is improved under the condition of enhancing the technical points.
As shown in fig. 1-2, for the saw tooth assembly 3 including the saw teeth 31, the saw teeth 31 have the protrusions 32, and the protrusions 32 in the saw cutting assembly 3 can prevent the saw cutting stress from concentrating during the sawing process, so as to protect the blade body 1. Specifically, the chip groove 4 is formed between any two adjacent saw teeth 31, and the generated scraps can be discharged through the chip groove 4 when the saw teeth 31 are sawn. For better chip removal, the chip removal grooves 4 are arranged at an obtuse angle, and the bottom curves of the chip removal grooves 4 are smoothly arranged.
When the abrasion value VB of the improved saw blade and the common saw blade reaches 0.5mm, the test and comparison of the cutting lengths of the two saw blades are shown in the table 1, namely the table 1.
From the data, when the abrasion value VB of the improved rear saw blade and the common saw blade reaches 0.5mm, the cutting length of the improved rear saw blade is far longer than that of the common saw blade.
When the cutter teeth on the improved saw blade and the common saw blade fall off, the test and comparison of the cutting lengths of the two saw blades are shown in table 2, namely table 2.
According to the data, the length of the cutter teeth on the common saw blade cut when the cutter teeth drop off for the first time is certain, the cutter teeth drop off phenomenon of the rear saw blade is rarely generated in the working process, and the length of the cutter teeth on the rear saw blade cut when the cutter teeth drop off for the first time is far longer than the length of the cutter teeth of the common saw blade; when the length of 3500m is cut by the rear saw blade and the common saw blade, the cutting surface of the rear saw blade is smooth and flat, and the cutting surface of the common saw blade is not smooth and uneven.
The improved welding force test and comparison of the saw blade and the common saw blade are shown in the table 3, namely the table 3.
From the above data, it is known that the welding force of the improved saw blade is far greater than that of the conventional saw blade.
The working principle of the invention is as follows: when the circular saw blade is required to be used, the four welding surfaces of the cutter tooth 11 can be respectively and adaptively arranged and welded and fixed with the first inner side surface 7, the second inner side surface 8, the third inner side surface 9 and the fourth inner side surface 10 of the mounting groove 6, and the stability of the cutter tooth 11 during working is improved due to the fact that the plurality of inner side surfaces are welded and fixed with the cutter tooth 11; meanwhile, the welding area between the first inner side surface 7 and the cutter tooth assembly 2 is larger than the welding area between the fourth inner side surface 10 and the cutter tooth assembly 2, and the cutter tooth 11 is in a semi-wrapping state when being placed in the mounting groove 6, so that the anti-falling force of the cutter tooth 11 in high-speed rotation is enhanced; after the cutter teeth 11 are arranged in the mounting groove 6, the cutter teeth 11 and the mounting groove 6 can be inclined by a certain angle, the arrangement can reduce the sawing instant area of the cutter teeth 11 and facilitate chip removal, and meanwhile, the sawing impact force is reduced.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (10)
1. The hard alloy cutter head tooth seat structure of the woodworking circular saw blade comprises a saw blade body (1) and cutter tooth assemblies (2), and is characterized in that a plurality of saw tooth assemblies (3) are arranged on the outer circumference of the saw blade body (1), and chip grooves (4) are formed between any two adjacent saw tooth assemblies (3); the side wall of the chip groove (4) is provided with a tooth seat limiting structure (5), and the cutter tooth assembly (2) is arranged on the tooth seat limiting structure (5).
2. The woodworking circular saw blade hard alloy cutter bit tooth holder structure according to claim 1, characterized in that the tooth holder limiting structure (5) comprises a mounting groove (6) arranged on the side wall of the chip groove (4), the mounting groove (6) is provided with a first inner side surface (7), a second inner side surface (8), a third inner side surface (9) and a fourth inner side surface (10), the first inner side surface (7) is connected with the second inner side surface (8), the second side surface is connected with the third inner side surface (9), and the third side surface is connected with the fourth inner side surface (10); one end of the cutter tooth assembly (2) is welded with four side faces.
3. The woodworking circular saw blade hard alloy cutter bit holder structure according to claim 2, characterized in that the welding area between the first inner side surface (7) and the cutter tooth assembly (2) is larger than the welding area between the fourth inner side surface (10) and the cutter tooth assembly (2).
4. A woodworking circular saw blade cemented carbide piece holder construction according to claim 2 or 3, characterized in that the first inner side (7) and the fourth inner side (10) are each inclined 0.3 to 1.2 degrees relative to the horizontal plane in which the axis of the blade body (1) is located.
5. The woodworking circular saw blade cemented carbide bit holder structure according to claim 4, characterized in that the second inner side (8) and the third inner side (9) are each inclined 0.3 to 1.2 degrees with respect to the vertical plane in which the thickness of the blade body (1) is located.
6. The cemented carbide chip holder structure of the woodworking circular saw blade according to claim 1, characterized in that the saw tooth assembly (3) comprises saw teeth (31), the saw teeth (31) are provided with convex parts (32), and the chip removal groove (4) is formed between any two adjacent saw teeth (31).
7. The cemented carbide chip holder structure of the woodworking circular saw blade according to claim 6, wherein the chip groove (4) is provided at an obtuse angle, and a bottom curve of the chip groove (4) is smoothly provided.
8. The woodworking circular saw blade hard alloy cutter bit tooth holder structure according to claim 7, wherein the cutter tooth assembly (2) comprises cutter teeth (11) made of hard alloy materials, and four welding surfaces which are respectively matched with the first inner side surface (7), the second inner side surface (8), the third inner side surface (9) and the fourth inner side surface (10) of the mounting groove (6) are arranged at one end of the cutter teeth (11).
9. The woodworking circular saw blade cemented carbide piece holder structure according to claim 8, characterized in that the other end of the cutter tooth (11) is a sawing end (12) and the end is arranged at an acute angle.
10. The woodworking circular saw blade cemented carbide bit holder structure according to claim 9, characterized in that the cutter tooth (11) has a first saw cut surface (13) and a second saw cut surface (14), and the difference in thickness between the first saw cut surface (13) and the second saw cut surface (14) is 0.14mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310143778.7A CN116197975A (en) | 2023-02-21 | 2023-02-21 | Hard alloy cutter head tooth seat structure of woodworking circular saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310143778.7A CN116197975A (en) | 2023-02-21 | 2023-02-21 | Hard alloy cutter head tooth seat structure of woodworking circular saw blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116197975A true CN116197975A (en) | 2023-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310143778.7A Pending CN116197975A (en) | 2023-02-21 | 2023-02-21 | Hard alloy cutter head tooth seat structure of woodworking circular saw blade |
Country Status (1)
| Country | Link |
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| CN (1) | CN116197975A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2450141A1 (en) * | 2010-11-09 | 2012-05-09 | Franz Schaupp | Compound circular saw blade |
| CN203390307U (en) * | 2013-07-09 | 2014-01-15 | 浙江金博工具有限公司 | Novel chip groove saw blade |
| CN203390306U (en) * | 2013-07-09 | 2014-01-15 | 浙江金博工具有限公司 | Circular saw web |
| CN205255181U (en) * | 2015-12-05 | 2016-05-25 | 杭州至广锯业有限公司 | Be particularly useful for ligneous saw bit |
| GB201702278D0 (en) * | 2017-02-10 | 2017-03-29 | Ernest Bennett & Company (Darlington) Ltd | Improvement to saw blades |
| CN206316463U (en) * | 2016-12-27 | 2017-07-11 | 东莞科宝机械刀具有限公司 | Circular noise reduction saw blade |
| CN206732266U (en) * | 2017-02-20 | 2017-12-12 | 株洲天成金属激光高科有限公司 | A kind of cemented carbide tipped circular saw blade |
| CN111036986A (en) * | 2019-12-25 | 2020-04-21 | 宁波协诚电动工具有限公司 | Circular saw blade |
| CN213063478U (en) * | 2020-07-20 | 2021-04-27 | 中石化江钻石油机械有限公司 | Novel sharp ridge-shaped cutting tooth |
-
2023
- 2023-02-21 CN CN202310143778.7A patent/CN116197975A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2450141A1 (en) * | 2010-11-09 | 2012-05-09 | Franz Schaupp | Compound circular saw blade |
| CN203390307U (en) * | 2013-07-09 | 2014-01-15 | 浙江金博工具有限公司 | Novel chip groove saw blade |
| CN203390306U (en) * | 2013-07-09 | 2014-01-15 | 浙江金博工具有限公司 | Circular saw web |
| CN205255181U (en) * | 2015-12-05 | 2016-05-25 | 杭州至广锯业有限公司 | Be particularly useful for ligneous saw bit |
| CN206316463U (en) * | 2016-12-27 | 2017-07-11 | 东莞科宝机械刀具有限公司 | Circular noise reduction saw blade |
| GB201702278D0 (en) * | 2017-02-10 | 2017-03-29 | Ernest Bennett & Company (Darlington) Ltd | Improvement to saw blades |
| CN206732266U (en) * | 2017-02-20 | 2017-12-12 | 株洲天成金属激光高科有限公司 | A kind of cemented carbide tipped circular saw blade |
| CN111036986A (en) * | 2019-12-25 | 2020-04-21 | 宁波协诚电动工具有限公司 | Circular saw blade |
| CN213063478U (en) * | 2020-07-20 | 2021-04-27 | 中石化江钻石油机械有限公司 | Novel sharp ridge-shaped cutting tooth |
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Application publication date: 20230602 |
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