CN117644242A - Saw blade grinding wheel and manufacturing method thereof - Google Patents
Saw blade grinding wheel and manufacturing method thereof Download PDFInfo
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- CN117644242A CN117644242A CN202311674931.5A CN202311674931A CN117644242A CN 117644242 A CN117644242 A CN 117644242A CN 202311674931 A CN202311674931 A CN 202311674931A CN 117644242 A CN117644242 A CN 117644242A
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- 238000000227 grinding Methods 0.000 title claims abstract description 261
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 206010006514 bruxism Diseases 0.000 claims abstract description 66
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 238000005498 polishing Methods 0.000 claims description 107
- 239000000843 powder Substances 0.000 claims description 103
- 238000002844 melting Methods 0.000 claims description 38
- 230000008018 melting Effects 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 19
- 239000000956 alloy Substances 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 11
- 230000010485 coping Effects 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 5
- 238000007790 scraping Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000000758 substrate Substances 0.000 abstract description 29
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910003460 diamond Inorganic materials 0.000 description 21
- 239000010432 diamond Substances 0.000 description 21
- 229910000619 316 stainless steel Inorganic materials 0.000 description 14
- 239000000203 mixture Substances 0.000 description 11
- 238000012545 processing Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 229910001182 Mo alloy Inorganic materials 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 238000003892 spreading Methods 0.000 description 6
- 230000007480 spreading Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D63/00—Dressing the tools of sawing machines or sawing devices for use in cutting any kind of material, e.g. in the manufacture of sawing tools
- B23D63/08—Sharpening the cutting edges of saw teeth
- B23D63/12—Sharpening the cutting edges of saw teeth by grinding
- B23D63/14—Sharpening circular saw blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention provides a saw blade grinding wheel and a manufacturing method thereof, wherein the saw blade grinding wheel comprises two grinding disks which are arranged in an up-down opposite way, each grinding disk comprises a grinding disk substrate, the grinding disk substrate is provided with a threaded interface, the inner side surface of the grinding disk substrate of at least one grinding disk is provided with grinding teeth, each grinding tooth comprises a plurality of radial grinding units and a plurality of annular grinding units, each radial grinding unit is arranged at intervals along the edge of the grinding disk, each radial grinding unit is an arc-shaped grinding block, each annular grinding unit is arranged between two adjacent radial grinding units, and each annular grinding unit comprises a plurality of rows of fan-shaped annular grinding blocks which are arranged at intervals along the radial direction of the grinding disk; and the threaded transmission rod passes through the threaded interface of the two grinding disks and is fixedly connected with the two grinding disks. The invention has the beneficial effects that: the distance between the two grinding plates can be adjusted according to the thickness of the saw blade to be ground, the grinding plates can be changed in size according to the shape of the saw blade and the grinding requirements, and the shapes and arrangement of the grinding teeth are high in universality.
Description
Technical Field
The invention relates to the technical field of saw blade grinding equipment, in particular to a saw blade grinding wheel and a manufacturing method thereof.
Background
Along with the rapid development of the super-large semiconductor industry, the saw blade is widely applied in the cutting industry scene, and provides convenience for preparing materials and processing products. However, after the saw blade is used for a period of time, deformation, burrs, region breakage and the like are easy to occur, the service life is rapidly reduced, the production cost is increased, the product percent of pass is also easily reduced by continuously using the saw blade with flaws, and the subsequent processing and production are affected.
The industry usually uses manual sharpening or adopts mechanical equipment such as a saw blade gear grinding machine, an angle grinder and the like to sharpen the saw blade. It is generally recognized that the cutting performance can be substantially restored by sharpening, as long as the degree of wear of the saw blade is not too high, within the range available for sharpening. However, manual grinding has high technical requirements and operation level for workers, and has low speed and large-batch processing difficulty. The mechanical equipment such as saw blade gear grinding machine has strong singleness and poor universality for saw blades of different types of matrixes and different sizes.
Disclosure of Invention
In view of the foregoing, embodiments of the present invention provide a saw blade sharpening grinding wheel and a method of manufacturing the same.
An embodiment of the present invention provides a saw blade sharpening grinding wheel, comprising:
two polishing discs are oppositely arranged up and down, each polishing disc comprises a polishing disc base body, a threaded interface is arranged on the polishing disc base body, polishing teeth are arranged on the inner side surface of the polishing disc base body of at least one polishing disc, each polishing tooth comprises a plurality of radial polishing units and a plurality of annular polishing units, each radial polishing unit is arranged at intervals along the edge of each polishing disc, each radial polishing unit is an arc-shaped polishing block, each annular polishing unit is arranged between two adjacent radial polishing units, and each annular polishing unit comprises a plurality of rows of fan-shaped ring polishing blocks arranged along the radial intervals of each polishing disc;
and the threaded transmission rod passes through the threaded interfaces of the two grinding disks and is fixedly connected with the two grinding disks.
Further, the inner side surfaces of the two grinding disks are respectively provided with the grinding teeth.
Further, the grinding teeth of the two grinding disks are arranged symmetrically up and down.
Further, the shapes of the grinding teeth of the two grinding disks are different.
Further, the inner side surface of one and only one grinding disc is provided with the grinding teeth.
Further, part of the fan ring grinding blocks are integrated fan ring blocks, the other fan ring grinding blocks are split type fan ring blocks, and the split type fan ring blocks comprise a plurality of sub-fan ring grinding blocks positioned on the same circumference.
Further, the width of each fan ring grinding block in each annular grinding unit is the same, and the arc length corresponding to the maximum radius of the fan ring grinding block from the edge of the grinding disc to the middle part of the grinding disc is gradually reduced.
In addition, the embodiment of the invention also provides a manufacturing method of the saw blade grinding wheel, which is used for manufacturing the saw blade grinding wheel and comprises the following steps of:
s1, constructing a three-dimensional model of two grinding discs of the saw blade grinding wheel through modeling software, slicing and layering the three-dimensional model, and guiding processed three-dimensional model data into a control system of laser selective melting forming equipment;
s2, feeding the grinding disc matrix powder into the laser selective melting forming equipment, and forming layer by adopting a laser selective melting technology until the two grinding disc matrixes are processed;
s3, filling grinding tooth repairing powder into the laser selective melting forming equipment, wherein a base plate of a forming cavity of the laser selective melting forming equipment descends by one powder bed height, a grinding tooth repairing powder is paved by using a scraping plate of the forming cavity to form a powder bed to be processed, when the oxygen content in the forming cavity is reduced below a preset value, laser selectively scans a partial area of the powder bed to be processed to form one layer of the grinding tooth, then the base plate of the forming cavity continues descending by one powder bed height, and after grinding tooth repairing powder is paved, the next layer of the grinding tooth is continuously scanned and formed, and the process is circulated until the last layer of the grinding tooth is formed;
s4, cutting and taking off the two formed coping discs from the base plate of the forming cavity.
Further, the grinding disc matrix powder is any one of cobalt-based, copper-based and iron-based commercial additive manufacturing alloy powder, the shape is spherical, the sphericity is more than or equal to 95%, and the granularity is 15-53um.
Further, the grinding tooth powder is any one or the combination of two of a composite material, an alloy material and a ceramic material.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
1. according to the saw blade grinding wheel, the distance between the two grinding plates can be adjusted according to the thickness of a saw blade to be ground, the size of the grinding plate and the shape and arrangement of grinding teeth can be changed at will according to the shape and grinding requirements of the saw blade, and the saw blade grinding wheel is suitable for saw blades with various types and thicknesses and has high universality.
2. The manufacturing method of the saw blade grinding wheel provided by the invention adopts the laser selective melting technology to finish the forming of the two grinding wheels, reduces the three-dimensional manufacturing to the two-dimensional manufacturing, can realize the material-structure integrated forming, reduces the process links of the traditional grinding wheel manufacturing, has the advantages of intelligentized and simplified processing flow, high forming efficiency and high degree of freedom in the processing process, and the manufactured saw blade grinding wheel can be used according to the actual requirements of a saw blade to be ground.
Drawings
FIG. 1 is a schematic view of a blade dressing wheel of the present invention;
FIG. 2 is a perspective view of a saw blade sharpening stone versus saw blade in accordance with embodiment 1 of the present invention;
FIG. 3 is a schematic view of a dressing disc according to example 1 of the present invention;
FIG. 4 is a schematic view of dressing teeth of a two-dressing disc of a saw blade dressing wheel of embodiment 1 of the invention;
FIG. 5 is a schematic view of dressing teeth of a two-dressing disc of a saw blade dressing wheel of embodiment 2 of the invention;
fig. 6 is a schematic view of dressing teeth of a two-dressing disc of a saw blade dressing wheel in embodiment 3 of the invention.
In the figure: 1. repairing the grinding disc; 2. a threaded transmission rod; 3. polishing the disc substrate; 4. grinding teeth; 5. a threaded interface; 6. a radial grinding unit; 7. an integral fan ring block; 8. split fan ring block, 100, saw blade.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings. The following presents a preferred one of a number of possible embodiments of the invention in order to provide a basic understanding of the invention, but is not intended to identify key or critical elements of the invention or to delineate the scope of the invention.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
In the description of the present invention, it should be noted that, in the present invention, circuits, electronic components, and modules are all related to the prior art, and those skilled in the art may completely implement the present invention, and it is needless to say that the protection of the present invention does not relate to improvement of internal structures and methods.
It is further noted that unless specifically stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 and 2, the present invention provides a saw blade grinding wheel, which comprises two grinding disks 1 and a threaded transmission rod 2 which are arranged up and down oppositely, wherein each grinding disk 1 comprises a grinding disk substrate 3, the grinding disk substrate 3 is provided with a threaded interface 5, and the inner side surface of the grinding disk substrate 3 of at least one grinding disk 1 is provided with grinding teeth 4. Namely, according to the grinding requirements of different saw blades 100, the inner side surfaces of the two grinding disc substrates 3 can be provided with grinding teeth 4; the grinding teeth 4 may be disposed on the inner side surface of the grinding disc base body 3 of one grinding disc 1, and the grinding teeth 4 may not be disposed on the inner side surface of the grinding disc base body 3 of the other grinding disc 1 according to the grinding requirements of different saw blades 100.
The polishing teeth 4 are of an array structure and comprise a plurality of radial polishing units 6 and a plurality of annular polishing units, the radial polishing units 6 are arranged along the edge of the polishing disc 1 at intervals, the radial polishing units 6 are arc-shaped polishing blocks, each annular polishing unit is arranged between two adjacent radial polishing units 6, and each annular polishing unit comprises a plurality of rows of fan-shaped annular polishing blocks arranged along the radial interval of the polishing disc 1.
According to the polishing requirement of the actual saw blade 100, part of the fan ring grinding blocks are integrated fan ring blocks 7, the other fan ring grinding blocks are split type fan ring blocks 8, and the split type fan ring blocks 8 comprise a plurality of sub-fan ring grinding blocks positioned on the same circumference.
The threaded transmission rod 2 is fixedly connected with the threaded interfaces 5 of the two grinding disks 1 and the two grinding disks 1. The threaded transmission rod 2 is a cylindrical steel pipe with external threads machined on the surface, and the outer diameter size of the threaded transmission rod 2 is determined by the inner diameter size of the threaded connector 5. The threaded interface 5 and the threaded transmission rod 2 are locked through a fastening bolt.
Example 1
Referring to fig. 2, 3 and 4, embodiment 1 of the present invention provides a grinding wheel for a saw blade for grinding a diamond saw blade, wherein the diamond saw blade is composed of a base body, a tool bit and a slot, the tool bit and the saw blade base body are combined together by high-frequency welding or laser welding, and the slot is uniformly distributed among the tool bits. The diamond saw blade to be polished cuts stone, the metal matrix is worn to cause the diamond part to fall off, the wear surface and the falling pit cause the diamond saw blade tool bit to generate a large number of burrs, so that the cutting seam of the stone plate is uneven, edge breakage is extremely easy to occur, and the diamond saw blade needs to be polished.
The saw blade grinding wheel comprises two grinding disks 1 and a threaded transmission rod 2 which are arranged up and down oppositely, wherein the inner side surfaces of the grinding disks 1 are respectively provided with grinding teeth 4, and the grinding teeth 4 of the grinding disks 1 are symmetrically arranged up and down.
The polishing teeth 4 are of an array structure and comprise a plurality of radial polishing units 6 and a plurality of annular polishing units, the radial polishing units 6 are uniformly arranged at intervals along the edge of the polishing disc 1, the radial polishing units 6 are arc-shaped polishing blocks, each annular polishing unit is arranged between two adjacent radial polishing units 6, and each annular polishing unit comprises a plurality of rows of fan-shaped annular polishing blocks arranged along the radial interval of the polishing disc 1. The width of each fan ring grinding block in each annular grinding unit is the same, and the arc length corresponding to the maximum radius of the fan ring grinding block from the edge of the grinding disc 1 to the middle part is gradually reduced.
Further, as in the present embodiment, according to the polishing requirement of the actual saw blade 100, a part of the fan ring blocks are integrated into one fan ring block 7, and the other fan ring blocks are split type fan ring blocks 8, wherein the split type fan ring blocks 8 comprise a plurality of sub-fan ring blocks located on the same circumference, and the plurality of sub-fan ring blocks are arranged on a fan ring at intervals. The fan ring grinding blocks are arranged in four rows or five rows, and one row of the fan ring grinding blocks is an integrated fan ring block 7, and the other row of the fan ring grinding blocks is a split type fan ring block 8 in two adjacent rows of the fan ring grinding blocks. From the edge to the middle of the coping plate 1, the first row of sector ring grinding blocks are integrated sector ring blocks 7.
Embodiment 1 of the present invention also provides a method for manufacturing a saw blade grinding wheel for manufacturing the saw blade grinding wheel of embodiment 1, comprising the steps of:
s1, constructing a three-dimensional model of the two grinding discs 1 of the saw blade grinding wheel through modeling software, slicing and layering the three-dimensional model, and guiding the processed three-dimensional model data into a control system of a laser selective melting forming device.
S2, feeding the powder of the grinding disc matrix 3 into the laser selective melting forming equipment, and forming layer by adopting a laser selective melting technology until the two grinding disc matrices 3 are processed.
Wherein the material of the grinding disc matrix 3 is commercial 316 stainless steel spherical powder, the granularity is 15-53um, the sphericity is more than or equal to 95%, and the powder flowability is 20s/50g.
The laser selective melt forming apparatus selects a laser selective melt rapid forming apparatus HK-M125,
the forming cavity substrate of the laser selective melting forming equipment is made of 316 stainless steel, the 316 stainless steel substrate is arranged on the forming table of the laser selective melting forming equipment, 316 stainless steel powder is filled into the powder cavity of the laser selective melting forming equipment, a powder spreading scraper is used for spreading powder after powder falling, and a layer of powder bed to be processed with the thickness of 50um is formed on the forming cavity substrate.
The substrate is preheated to 150 ℃, and argon is introduced into the forming cavity matrix as a shielding gas to reduce the oxygen content to below 200 ppm. Setting the scanning power of the laser to 350w, the scanning speed to 700mm/s, the scanning interval to 0.12mm, the laser spot diameter to 50um, and the thickness of the automatic processing powder bed to 50um. Starting a laser, and scanning and forming the grinding disc substrate 3 layer by layer. One side of the grinding disc substrate 3 forms a hollow cylinder.
S3, filling grinding tooth 4 powder into the laser selective melting forming equipment, wherein a base plate of a forming cavity of the laser selective melting forming equipment descends by one powder bed height, a grinding tooth 4 powder is paved by using a scraping plate of the forming cavity to form a powder bed to be processed, when the oxygen content in the forming cavity is reduced below a preset value, laser selectively scans a partial area of the powder bed to be processed to form one layer of the grinding tooth 4, then the base plate of the forming cavity descends by one powder bed height continuously, the next layer of the grinding tooth 4 is continuously scanned and formed after the grinding tooth 4 powder is paved, and the process is circulated until the last layer of the grinding tooth 4 is formed.
Wherein the grinding tooth 4 powder is cobalt-based diamond composite material powder which is prepared by mixing commercial Co-Cr-Mo alloy and diamond. The Co-Cr-Mo alloy is spherical or nearly spherical, the granularity is 15-53um, the sphericity is more than or equal to 95 percent, and the Co-Cr-Mo alloy accounts for 80 percent of the volume of the composite material powder. The diamond crystal form is a regular dodecahedron, the granularity is 38-44 um, and the diamond crystal form accounts for 20% of the volume of the composite material powder. Co-Cr-Mo alloy powder and diamond powder according to the following ratio of 4:1, putting the mixture into a mixer for mixing for 20 hours, taking out, putting the mixture into a vacuum oven at 60 ℃ for drying for 2 hours, and then putting the mixture into a powder cavity in a laser selective melting forming device.
The thickness of a powder bed to be processed formed by paving grinding teeth 4 powder is 50um, the laser scanning power is 220w when the laser selectively scans partial areas of the powder bed to be processed, the scanning speed is 750mm/s, the scanning interval is 0.12mm, and the laser spot diameter is 50um.
S4, cutting and taking off the two formed coping discs 1 from the base plate of the forming cavity. Specifically, the two grinding disks 1 after the formation were cut out of the 316 stainless steel substrate using a wire electric discharge machine.
Finally, internal threads are processed in the hollow cylinder on one side of the two grinding disc 1 by a numerical control horizontal machine tool. And a steel pipe with proper length is selected as a raw material of the threaded transmission rod 2, external threads are machined on the outer surface of the steel pipe, and the internal threads on the grinding disc 1 and the external threads on the threaded transmission rod 2 are machined according to national standards, tooth distances and other geometric parameters.
The two grinding disc 1 are rotated to the center of the threaded transmission rod 2, a 4mm interval is reserved between the two grinding disc 1, and grinding teeth 4 of the grinding disc 1 are oppositely installed. After the saw blade 100 to be sharpened is fixed by using the locking bolt to fasten the lower sharpening disk 1, the lower surface of the saw blade 100 is closely attached to the sharpening teeth 4 of the lower sharpening disk 1, the upper sharpening disk 1 is continuously rotated around the threaded transmission rod 2 to the position 1mm above the saw blade 100 to be sharpened, and the upper sharpening disk 1 is fastened by using the locking bolt.
The grinding process of the saw blade grinding wheel to the saw blade 100 is as follows:
the saw blade 100 to be polished and the threaded transmission rod 2 are respectively driven by a first motor and a second motor, so that the saw blade 100 to be polished and the two polishing discs 1 rotate in opposite directions, cooling lubricating liquid is introduced between the polishing teeth 4 of the two polishing discs, and burrs and warping edges on the saw blade 100 to be polished begin to be polished.
After the saw blade 100 is polished to a certain extent, the first motor and the second motor are stopped, the fastening bolts on the upper polishing disc 1 are removed, the upper polishing disc 1 is continuously moved down to the position of 0.5mm on the upper surface of the saw blade 1 to be polished, the fastening bolts are used for fastening the upper polishing disc 1, and the first motor and the second motor are started to continuously polish.
After the saw blade 100 is machined to a certain extent, the first motor and the second motor are stopped, the fastening bolts on the upper grinding disc 1 are dismounted, the upper grinding disc 1 is continuously moved down to the position of 0.1mm on the upper surface of the saw blade 100 to be ground, the fastening bolts are used for fastening the upper grinding disc 1, and grinding is continuously performed after the first motor and the second motor are started.
After finishing the grinding, all the first motor and the second motor are stopped, the saw blade 100 is taken out, and the saw blade 100 which can be continuously used is obtained after oil removal and polishing treatment.
Example 2
Referring to fig. 5, embodiment 2 of the present invention provides a saw blade sharpening grinding wheel for sharpening an ultrathin cemented carbide saw blade, wherein the ultrathin cemented carbide saw blade is composed of a base body, a tool bit and a slot, the tool bit and the saw blade base body are combined together by high-frequency welding or laser welding, and the slot is uniformly distributed among the tool bits. The cutter head material is a hard alloy material with the brand of YG8, wherein the cobalt content accounts for 8% of the total mass fraction, the tungsten carbide accounts for 92% of the total mass fraction, and the cutter head is prepared by a mature hot-press sintering process. The ultrathin hard alloy saw blade to be polished cuts wood, tiny burrs are generated on the grinding teeth due to heating, abrasion and the like, wood dust flies out when the wood is cut easily, cutting edges are not smooth, and the ultrathin hard alloy saw blade needs to be polished.
The saw blade grinding wheel comprises two grinding disks 1 and a threaded transmission rod 2 which are arranged up and down oppositely, wherein only one grinding disk 1 positioned above is provided with grinding teeth 4 on the inner side surface. In this embodiment, according to the requirement of grinding an ultrathin cemented carbide saw blade, two grinding discs 1 of the saw blade grinding wheel are designed to have different structures, the grinding disc 1 positioned above contains grinding teeth 4, and the grinding disc 1 positioned below does not contain the grinding teeth 4, so as to ensure grinding precision and prevent the ultrathin cemented carbide saw blade from being broken due to overlarge external force.
The polishing teeth 4 are of an array structure and comprise a plurality of radial polishing units 6 and a plurality of annular polishing units, the radial polishing units 6 are uniformly arranged at intervals along the edge of the polishing disc 1, the radial polishing units 6 are arc-shaped polishing blocks, each annular polishing unit is arranged between two adjacent radial polishing units 6, and each annular polishing unit comprises a plurality of rows of fan-shaped annular polishing blocks arranged along the radial interval of the polishing disc 1. The width of each fan ring grinding block in each annular grinding unit is the same, and the arc length corresponding to the maximum radius of the fan ring grinding block from the edge of the grinding disc 1 to the middle part is gradually reduced.
Embodiment 2 of the present invention also provides a method for manufacturing a saw blade grinding wheel for manufacturing the saw blade grinding wheel of embodiment 2, comprising the steps of:
s1, constructing a three-dimensional model of the two grinding discs 1 of the saw blade grinding wheel through modeling software, slicing and layering the three-dimensional model, and guiding the processed three-dimensional model data into a control system of a laser selective melting forming device.
S2, feeding the powder of the grinding disc matrix 3 into the laser selective melting forming equipment, and forming layer by adopting a laser selective melting technology until the two grinding disc matrices 3 are processed.
Wherein the material of the grinding disc matrix 3 is commercial Co-Cr-Mo alloy spherical powder, the granularity is 15-53um, the sphericity is more than or equal to 95 percent, and the powder flowability is 18s/50g.
The laser selective melt forming apparatus selects a laser selective melt rapid forming apparatus HK-M125,
the forming cavity substrate of the laser selective melting forming equipment is made of 316 stainless steel, the 316 stainless steel substrate is arranged on the forming table of the laser selective melting forming equipment, 316 stainless steel powder is filled into the powder cavity of the laser selective melting forming equipment, a powder spreading scraper is used for spreading powder after powder falling, and a layer of powder bed to be processed with the thickness of 50um is formed on the forming cavity substrate.
The substrate is preheated to 180 ℃, argon is introduced into the forming cavity matrix as a shielding gas, so that the oxygen content is reduced to below 300 ppm. Setting the scanning power of the laser to 220w, the scanning speed to 750mm/s, the scanning interval to 0.1mm, the laser spot diameter to 50um, and the thickness of the automatic processing powder bed to 50um. Starting a laser, and scanning and forming the grinding disc substrate 3 layer by layer. One side of the grinding disc substrate 3 forms a hollow cylinder.
S3, filling grinding tooth 4 powder into the laser selective melting forming equipment, wherein a base plate of a forming cavity of the laser selective melting forming equipment descends by one powder bed height, a grinding tooth 4 powder is paved by using a scraping plate of the forming cavity to form a powder bed to be processed, when the oxygen content in the forming cavity is reduced below a preset value, laser selectively scans a partial area of the powder bed to be processed to form one layer of the grinding tooth 4, then the base plate of the forming cavity descends by one powder bed height continuously, the next layer of the grinding tooth 4 is continuously scanned and formed after the grinding tooth 4 powder is paved, and the process is circulated until the last layer of the grinding tooth 4 is formed.
Wherein the coping tooth 4 powder is a copper-based diamond composite powder prepared from commercial CuSn10 alloy and diamond mix. The CuSn10 alloy is spherical or nearly spherical, the granularity is 15-53um, the sphericity is more than or equal to 95%, and the sphericity accounts for 90% of the volume of the composite material powder. The diamond crystal form is irregular needle-shaped or broken block, the granularity is 15-38um, and the diamond crystal form accounts for 10% of the volume of the composite material powder. CuSn10 alloy powder and diamond powder were mixed according to 9:1, putting the mixture into a mixer for mixing for 30 hours, taking out, putting the mixture into a vacuum oven at 60 ℃ for drying for 3 hours, and then putting the mixture into a powder cavity in a laser selective melting forming device.
The thickness of a powder bed to be processed formed by paving grinding teeth 4 powder is 50um, the laser scanning power is designed to be 450w when laser selectively scans partial areas of the powder bed to be processed, the scanning speed is 900mm/s, the scanning interval is 0.1mm, and the laser spot diameter is 50um.
S4, cutting and taking off the two formed coping discs 1 from the base plate of the forming cavity. Specifically, the two grinding disks 1 after the formation were cut out of the 316 stainless steel substrate using a wire electric discharge machine.
Finally, internal threads are processed in the hollow cylinder on one side of the two grinding disc 1 by a numerical control horizontal machine tool. And a steel pipe with proper length is selected as a raw material of the threaded transmission rod 2, external threads are machined on the outer surface of the steel pipe, and the internal threads on the grinding disc 1 and the external threads on the threaded transmission rod 2 are machined according to national standards, tooth distances and other geometric parameters.
And rotating the two grinding disc 1 to the center of the threaded transmission rod 2, reserving a 3mm interval between the two grinding disc 1, and oppositely installing grinding teeth 4 of the grinding disc 1. After the saw blade 100 to be sharpened is fixed by using the locking bolt to fasten the lower sharpening disk 1, the lower surface of the saw blade 100 is closely attached to the sharpening teeth 4 of the lower sharpening disk 1, the upper sharpening disk 1 is continuously rotated around the threaded transmission rod 2 to the position 1mm above the saw blade 100 to be sharpened, and the upper sharpening disk 1 is fastened by using the locking bolt.
The grinding process of the saw blade grinding wheel to the saw blade 100 is as follows:
the saw blade 100 to be polished and the threaded transmission rod 2 are respectively driven by a first motor and a second motor, so that the saw blade 100 to be polished and the two polishing discs 1 rotate in opposite directions, cooling lubricating liquid is introduced between the polishing teeth 4 of the two polishing discs, and burrs and warping edges on the saw blade 100 to be polished begin to be polished.
After the saw blade 100 is polished to a certain extent, the first motor and the second motor are stopped, the fastening bolts on the upper polishing disc 1 are removed, the upper polishing disc 1 is continuously moved down to the position of 0.5mm on the upper surface of the saw blade 1 to be polished, the fastening bolts are used for fastening the upper polishing disc 1, and the first motor and the second motor are started to continuously polish.
After the saw blade 100 is polished to a certain extent, the first motor and the second motor are stopped, the fastening bolts on the upper polishing disc 1 are removed, the upper polishing disc 1 is continuously moved down to the position of 0.1mm on the upper surface of the saw blade 1 to be polished, the fastening bolts are used for fastening the upper polishing disc 1, and the first motor and the second motor are started to continuously polish.
After the saw blade 100 is machined to a certain extent, the first motor and the second motor are stopped, the fastening bolts on the upper grinding disc 1 are dismounted, the upper grinding disc 1 is continuously moved down to the position of 0.05mm on the upper surface of the saw blade 100 to be ground, the fastening bolts are used for fastening the upper grinding disc 1, and grinding is continuously performed after the first motor and the second motor are started.
After finishing the grinding, all the first motor and the second motor are stopped, the saw blade 100 is taken out, and the saw blade 100 which can be continuously used is obtained after oil removal and polishing treatment.
Example 3
Referring to fig. 6, embodiment 3 of the present invention provides a saw blade grinding wheel for grinding an alloy saw blade special for cutting aluminum, wherein the alloy saw blade special for cutting aluminum is composed of a base body and a tool bit, and the tool bit and the saw blade base body are combined together by high-frequency welding or laser welding. The cutter head is serrated, and the cutter head is prepared by a mature hot-pressing sintering process. The commercial aluminum alloy saw blade special for cutting to be polished cuts aluminum alloy materials, saw teeth are bent and burr with different degrees after abrasion, so that a cutting surface is not smooth when the aluminum alloy is cut, collapse is easy to occur, abrasion states of two sides of the saw blade are different, and the abrasion surfaces of two sides of the saw blade are required to be polished with different degrees.
The saw blade grinding wheel comprises two grinding discs 1 and a threaded transmission rod 2 which are arranged up and down oppositely, wherein the inner side surfaces of the grinding discs 1 are respectively provided with grinding teeth 4, the two grinding discs 1 are designed into different structures according to the grinding requirements of the alloy saw blade special for cutting aluminum, and the structures of the grinding teeth 4 of the grinding discs 1 are different, so that grinding precision is guaranteed, and good grinding effects on two sides of the saw blade can be guaranteed.
The grinding teeth 4 of the grinding disc 1 positioned above are of an array structure, and specifically comprise a plurality of radial grinding units 6 and a plurality of annular grinding units, the radial grinding units 6 are uniformly arranged at intervals along the edge of the grinding disc 1, the radial grinding units 6 are arc-shaped grinding blocks, each annular grinding unit is arranged between two adjacent radial grinding units 6, and each annular grinding unit comprises a plurality of rows of fan-shaped annular grinding blocks which are arranged along the radial interval of the grinding disc 1. The width of each fan ring grinding block in each annular grinding unit is the same, and the arc length corresponding to the maximum radius of the fan ring grinding block from the edge of the grinding disc 1 to the middle part is gradually reduced. Part of the fan ring grinding blocks are integrated fan ring blocks 7, the other fan ring grinding blocks are split type fan ring blocks 8, the split type fan ring blocks 8 comprise a plurality of sub-fan ring grinding blocks positioned on the same circumference, and the sub-fan ring grinding blocks are arranged on a fan ring at intervals. The fan ring grinding blocks are arranged in four rows or five rows, and one row of the fan ring grinding blocks is an integrated fan ring block 7, and the other row of the fan ring grinding blocks is a split type fan ring block 8 in two adjacent rows of the fan ring grinding blocks. From the edge to the middle of the coping plate 1, the first row of sector ring grinding blocks are integrated sector ring blocks 7.
The grinding teeth 4 of the grinding disc 1 positioned below are of an array structure, and specifically comprise a plurality of radial grinding units 6 and a plurality of annular grinding units, the radial grinding units 6 are uniformly arranged at intervals along the edge of the grinding disc 1, the radial grinding units 6 are arc-shaped grinding blocks, each annular grinding unit is arranged between two adjacent radial grinding units 6, and each annular grinding unit comprises a plurality of rows of fan-shaped annular grinding blocks which are arranged along the radial interval of the grinding disc 1. The fan ring grinding blocks are all integrated into a fan ring block 7. The width of each fan ring grinding block in each annular grinding unit is the same, and the arc length corresponding to the maximum radius of the fan ring grinding block from the edge of the grinding disc 1 to the middle part is gradually reduced.
Embodiment 3 of the present invention also provides a method for manufacturing a saw blade grinding wheel for manufacturing the saw blade grinding wheel of embodiment 3, comprising the steps of:
s1, constructing a three-dimensional model of the two grinding discs 1 of the saw blade grinding wheel through modeling software, slicing and layering the three-dimensional model, and guiding the processed three-dimensional model data into a control system of a laser selective melting forming device.
S2, feeding the powder of the grinding disc matrix 3 into the laser selective melting forming equipment, and forming layer by adopting a laser selective melting technology until the two grinding disc matrices 3 are processed.
Wherein the material of the grinding disc matrix 3 is commercial 316 stainless steel spherical powder, the granularity is 15-53um, the sphericity is more than or equal to 95%, and the powder flowability is 20s/50g.
The laser selective melt forming apparatus selects a laser selective melt rapid forming apparatus HK-M125,
the forming cavity substrate of the laser selective melting forming equipment is made of 316 stainless steel, the 316 stainless steel substrate is arranged on the forming table of the laser selective melting forming equipment, 316 stainless steel powder is filled into the powder cavity of the laser selective melting forming equipment, a powder spreading scraper is used for spreading powder after powder falling, and a layer of powder bed to be processed with the thickness of 50um is formed on the forming cavity substrate.
The substrate is preheated to 150 ℃, and argon is introduced into the forming cavity matrix as a shielding gas to reduce the oxygen content to below 200 ppm. Setting the scanning power of the laser to 350w, the scanning speed to 700mm/s, the scanning interval to 0.12mm, the laser spot diameter to 50um, and the thickness of the automatic processing powder bed to 50um. Starting a laser, and scanning and forming the grinding disc substrate 3 layer by layer. One side of the grinding disc substrate 3 forms a hollow cylinder.
S3, filling grinding tooth 4 powder into the laser selective melting forming equipment, wherein a base plate of a forming cavity of the laser selective melting forming equipment descends by one powder bed height, a grinding tooth 4 powder is paved by using a scraping plate of the forming cavity to form a powder bed to be processed, when the oxygen content in the forming cavity is reduced below a preset value, laser selectively scans a partial area of the powder bed to be processed to form one layer of the grinding tooth 4, then the base plate of the forming cavity descends by one powder bed height continuously, the next layer of the grinding tooth 4 is continuously scanned and formed after the grinding tooth 4 powder is paved, and the process is circulated until the last layer of the grinding tooth 4 is formed.
Wherein the coping tooth 4 powder is a copper-based diamond composite powder prepared from commercial CuSn10 alloy and diamond mix. The CuSn10 alloy is spherical or nearly spherical, the granularity is 15-53um, the sphericity is more than or equal to 95%, and the sphericity accounts for 75% of the volume of the composite material powder. The diamond crystal form is regular octahedron, the granularity is 44-53um, and the diamond crystal form accounts for 25% of the volume of the composite material powder. Co-Cr-Mo alloy powder and diamond powder are mixed according to a proportion of 3:1, putting the mixture into a mixer for mixing for 18 hours, taking out, putting the mixture into a vacuum oven at 50 ℃ for drying for 3 hours, and then putting the mixture into a powder cavity in a laser selective melting forming device.
The thickness of a powder bed to be processed formed by paving grinding teeth 4 powder is 50um, the laser scanning power is designed to be 450w when laser selectively scans partial areas of the powder bed to be processed, the scanning speed is 900mm/s, the scanning interval is 0.1mm, and the laser spot diameter is 50um.
S4, cutting and taking off the two formed coping discs 1 from the base plate of the forming cavity. Specifically, the two grinding disks 1 after the formation were cut out of the 316 stainless steel substrate using a wire electric discharge machine.
Finally, internal threads are processed in the hollow cylinder on one side of the two grinding disc 1 by a numerical control horizontal machine tool. And a steel pipe with proper length is selected as a raw material of the threaded transmission rod 2, external threads are machined on the outer surface of the steel pipe, and the internal threads on the grinding disc 1 and the external threads on the threaded transmission rod 2 are machined according to national standards, tooth distances and other geometric parameters.
The two grinding disc 1 are rotated to the center of the threaded transmission rod 2, a 4mm interval is reserved between the two grinding disc 1, and grinding teeth 4 of the grinding disc 1 are oppositely installed. After the saw blade 100 to be sharpened is fixed by using the locking bolt to fasten the lower sharpening disk 1, the lower surface of the saw blade 100 is closely attached to the sharpening teeth 4 of the lower sharpening disk 1, the upper sharpening disk 1 is continuously rotated around the threaded transmission rod 2 to the position 1mm above the saw blade 100 to be sharpened, and the upper sharpening disk 1 is fastened by using the locking bolt.
The grinding process of the saw blade grinding wheel to the saw blade 100 is as follows:
the saw blade 100 to be polished and the threaded transmission rod 2 are respectively driven by a first motor and a second motor, so that the saw blade 100 to be polished and the two polishing discs 1 rotate in opposite directions, cooling lubricating liquid is introduced between the polishing teeth 4 of the two polishing discs, and burrs and warping edges on the saw blade 100 to be polished begin to be polished.
After the saw blade 100 is polished to a certain extent, the first motor and the second motor are stopped, the fastening bolts on the upper polishing disc 1 are removed, the upper polishing disc 1 is continuously moved down to the position of 0.6mm on the upper surface of the saw blade 1 to be polished, the fastening bolts are used for fastening the upper polishing disc 1, and the first motor and the second motor are started to continuously polish.
After the saw blade 100 is polished to a certain extent, the first motor and the second motor are stopped, the fastening bolts on the upper polishing disc 1 are removed, the upper polishing disc 1 is continuously moved down to the position of 0.3mm on the upper surface of the saw blade 1 to be polished, the fastening bolts are used for fastening the upper polishing disc 1, and the first motor and the second motor are started to continuously polish.
After the saw blade 100 is polished to a certain extent, the first motor and the second motor are stopped, the fastening bolts on the upper polishing disc 1 are removed, the upper polishing disc 1 is continuously moved down to the position of 0.1mm on the upper surface of the saw blade 1 to be polished, the fastening bolts are used for fastening the upper polishing disc 1, and the first motor and the second motor are started to continuously polish.
After the saw blade 100 is machined to a certain extent, the first motor and the second motor are stopped, the fastening bolts on the upper grinding disc 1 are dismounted, the upper grinding disc 1 is continuously moved down to the position of 0.05mm on the upper surface of the saw blade 100 to be ground, the fastening bolts are used for fastening the upper grinding disc 1, and grinding is continuously performed after the first motor and the second motor are started.
After finishing the grinding, all the first motor and the second motor are stopped, the saw blade 100 is taken out, and the saw blade 100 which can be continuously used is obtained after oil removal and polishing treatment.
In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that they are relative concepts and can be varied in many ways depending upon the application and placement, and that the use of such orientation terms should not be taken to limit the scope of protection of the present application.
The embodiments described above and features of the embodiments herein may be combined with each other without conflict. The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A saw blade sharpening grinding wheel, comprising:
two polishing discs are oppositely arranged up and down, each polishing disc comprises a polishing disc base body, a threaded interface is arranged on the polishing disc base body, polishing teeth are arranged on the inner side surface of the polishing disc base body of at least one polishing disc, each polishing tooth comprises a plurality of radial polishing units and a plurality of annular polishing units, each radial polishing unit is arranged at intervals along the edge of each polishing disc, each radial polishing unit is an arc-shaped polishing block, each annular polishing unit is arranged between two adjacent radial polishing units, and each annular polishing unit comprises a plurality of rows of fan-shaped ring polishing blocks arranged along the radial intervals of each polishing disc;
and the threaded transmission rod passes through the threaded interfaces of the two grinding disks and is fixedly connected with the two grinding disks.
2. A saw blade sharpening grinding wheel as defined in claim 1, wherein: the inner side surfaces of the two grinding disks are respectively provided with the grinding teeth.
3. A saw blade sharpening grinding wheel as defined in claim 2, wherein: the grinding teeth of the two grinding disks are arranged symmetrically up and down.
4. A saw blade sharpening grinding wheel as defined in claim 2, wherein: the shapes of the grinding teeth of the two grinding disks are different.
5. A saw blade sharpening grinding wheel as defined in claim 2, wherein: and the inner side surface of only one grinding disc is provided with the grinding teeth.
6. A saw blade sharpening grinding wheel as defined in claim 1, wherein: part of the fan ring grinding blocks are integrated fan ring blocks, the other fan ring grinding blocks are split type fan ring blocks, and each split type fan ring block comprises a plurality of sub-fan ring grinding blocks positioned on the same circumference.
7. A saw blade sharpening grinding wheel as defined in claim 1, wherein: the width of each fan ring grinding block in each annular grinding unit is the same, and the arc length corresponding to the maximum radius of the fan ring grinding block from the edge of the grinding disc to the middle part of the grinding disc is gradually reduced.
8. A manufacturing method of a saw blade grinding wheel is characterized in that: a method for manufacturing a saw blade sharpening grinding wheel according to any one of claims 1-7, comprising the steps of:
s1, constructing a three-dimensional model of two grinding discs of the saw blade grinding wheel through modeling software, slicing and layering the three-dimensional model, and guiding processed three-dimensional model data into a control system of laser selective melting forming equipment;
s2, feeding the grinding disc matrix powder into the laser selective melting forming equipment, and forming layer by adopting a laser selective melting technology until the two grinding disc matrixes are processed;
s3, filling grinding tooth repairing powder into the laser selective melting forming equipment, wherein a base plate of a forming cavity of the laser selective melting forming equipment descends by one powder bed height, a grinding tooth repairing powder is paved by using a scraping plate of the forming cavity to form a powder bed to be processed, when the oxygen content in the forming cavity is reduced below a preset value, laser selectively scans a partial area of the powder bed to be processed to form one layer of the grinding tooth, then the base plate of the forming cavity continues descending by one powder bed height, and after grinding tooth repairing powder is paved, the next layer of the grinding tooth is continuously scanned and formed, and the process is circulated until the last layer of the grinding tooth is formed;
s4, cutting and taking off the two formed coping discs from the base plate of the forming cavity.
9. A method of manufacturing a saw blade sharpening grinding wheel as defined in claim 8, wherein: the grinding disc matrix powder is any one of cobalt-based, copper-based and iron-based commercial additive manufacturing alloy powder, the shape is spherical, the sphericity is more than or equal to 95%, and the granularity is 15-53um.
10. A method of manufacturing a saw blade sharpening grinding wheel as defined in claim 8, wherein: the grinding tooth powder is any one or the combination of two of a composite material, an alloy material and a ceramic material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311674931.5A CN117644242A (en) | 2023-12-06 | 2023-12-06 | Saw blade grinding wheel and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311674931.5A CN117644242A (en) | 2023-12-06 | 2023-12-06 | Saw blade grinding wheel and manufacturing method thereof |
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| CN117644242A true CN117644242A (en) | 2024-03-05 |
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| CN202311674931.5A Pending CN117644242A (en) | 2023-12-06 | 2023-12-06 | Saw blade grinding wheel and manufacturing method thereof |
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- 2023-12-06 CN CN202311674931.5A patent/CN117644242A/en active Pending
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