EP3766637B1 - Outil abrasif et procédé de fabrication associé - Google Patents

Outil abrasif et procédé de fabrication associé Download PDF

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Publication number
EP3766637B1
EP3766637B1 EP19767677.8A EP19767677A EP3766637B1 EP 3766637 B1 EP3766637 B1 EP 3766637B1 EP 19767677 A EP19767677 A EP 19767677A EP 3766637 B1 EP3766637 B1 EP 3766637B1
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EP
European Patent Office
Prior art keywords
thin
teeth
tooth
thin teeth
substrate
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.)
Active
Application number
EP19767677.8A
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German (de)
English (en)
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EP3766637A4 (fr
EP3766637C0 (fr
EP3766637A1 (fr
Inventor
Jingxin SONG
Yuanpei CAI
Xinling GUO
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Guilin Champion Union Diamond Co Ltd
Original Assignee
Guilin Champion Union Diamond Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN201820334241.3U external-priority patent/CN207629869U/zh
Priority claimed from CN201810201963.6A external-priority patent/CN108188945B/zh
Application filed by Guilin Champion Union Diamond Co Ltd filed Critical Guilin Champion Union Diamond Co Ltd
Publication of EP3766637A1 publication Critical patent/EP3766637A1/fr
Publication of EP3766637A4 publication Critical patent/EP3766637A4/fr
Application granted granted Critical
Publication of EP3766637C0 publication Critical patent/EP3766637C0/fr
Publication of EP3766637B1 publication Critical patent/EP3766637B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
    • B24D3/22—Rubbers synthetic or natural
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/04—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising a plurality of flaps or strips arranged around the axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • B24D13/16—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face comprising pleated flaps or strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/18—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor with cooling provisions
    • 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
    • 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
    • B24D18/009—Tools not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D7/066—Grinding blocks; their mountings or supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings

Definitions

  • the present invention relates to the technical field of grinding tools, and in particular to a grinding tool and a manufacturing method thereof.
  • Metal bond diamond grinding wheels are generally manufactured by a powder metallurgy sintering process.
  • An effective way is to use a toothed grinding wheel with groove bodies and use an intermittent (impact) grinding function to enhance the grinding efficiency.
  • the usual method is to set some groove body structures which are beneficial for chip-removal (chip-holding) and water-passing (water-holding) on a diamond working layer and are typically implemented by one-time molding through a preset mold. Then, a tooth-shaped diamond grinding wheel with groove bodies is manufactured.
  • Each groove body is usually formed by presetting a gate block made of graphite, cast iron, an alloy and other materials in the mold and removing (pulling out) the gate block after hot pressing and sintering.
  • a graphite gate block is fragile.
  • a gate block needs to have sufficient solid cross-sectional areas in all directions, especially on a main pressure bearing surface.
  • the gate block inevitably has a large volume which causes a large interval between diamond teeth (i.e., the width of each groove body is large).
  • a large width of the groove body is advantageous for the cooling of a material to be machined, but plays a very limited role in the cooling effect on the diamond working layer. Therefore, in the intermittent grinding, the grinding wheel is manifested by a large impact force and a large beating amplitude, thereby increasing the surface roughness of the workpiece.
  • the volume of the gate block cannot be too small under the constraints of manufacturing process conditions such as the strength.
  • the number of the provided groove bodies is limited objectively, which in turn restricts diamond working teeth from having a space in a circumferential direction to be thinner. In this way, a long circumferential chip-removal path, large accumulation amount of chips and large heat generation of the grinding wheel in working are caused.
  • Metal bond diamond grinding wheels are generally manufactured by a powder metallurgy technology.
  • the fluidity of metal powder (bond) is relatively poor.
  • the pressure transmission will be affected, resulting in uneven compaction of the diamond grinding wheels and performance deviations. Therefore, some complex structures cannot be manufactured by the powder metallurgy technology.
  • Diamond grinding wheel products manufactured by the prior art process can realize a small amount of groove bodies and a larger volume occupied by the groove bodies through mold presetting, but causes simple and thick shapes of diamond teeth, and thus take a very limited effect. If a post-machining method is adopted, it is usually difficult to machine, resulting in increased cost.
  • a grinding tool comprising an inclinedly shaped teeth on the circumference tool body.
  • the tooth is formed like a thread with spaces between two adjacent tooth-semgments.
  • the spaces are arranged to conduit cutting-chips and coolant away from the grinding zone.
  • a groove is arranged in orthogonal direction to the teeth-tread on the circumference, wherein slats are arranged to trap chips and conduit coolant.
  • KR 101 560 502 B1 discloses a polishing wheel, comprising a plurality of block-shaped polishing pads arranged in close contact with each other.
  • the first polishing pad extends towards the center of the polishing wheel.
  • a plurality of second polishing pads forming do not extend to the center of the polishing wheel, forms the gap in shape of a triangular cross-section between the first polishing pads.
  • DE 595 219 C discloses a grinding tool with a plurality of teeth which are fixed on a body-plate.
  • the connection between the plurality of teeth and the body-plate is made with an elastic binder to prevent vibrations.
  • Each tooth is slotted, also to prevent vibrations, to archive a smooth grinded surface.
  • US 4,212,127 A1 discloses an annular segmented grinding wheel, having a plurality of interchangeable composites.
  • Each interchangeable composite has a preformed abrasive segment and a relatively non-abrasive shell, wherein the abrasive segment is embedded.
  • the relatively non-abrasive shell is provided with a complex groove to be connected with a chuck by mating or clamping.
  • the non-abrasive shell also having a tongue or projection on its one end and on the other end a projection or tongue to interfitting and abutting with identical shell-segments.
  • JP 358196061 U discloses a grinding wheel, having a plurality of teeth arranged on a body-plate.
  • the teeth are arranged on the body-plate to form an annular structure, so that the teeth from grooves with its adjacent tooth.
  • the connection between the body-plate and tooth is made by ab flexible binder, which allows the tooth to trace the grinding surface.
  • the conditions described in the above-mentioned technical background not only exist in metal bond grinding wheels, but also in ceramic bond, resin bond, rubber bond, organic bond diamond grinding wheels or ordinary abrasive grinding wheels or polishing wheels. Similar problems will happen to these wheels whatever they are provided with base bodies or not provided with base bodies.
  • the ceramic bond grinding wheel has good heat resistance, but the cooling of workpieces is limited during high-speed and high-efficiency machining with a large grinding contact area.
  • the resin bond and rubber bond grinding wheels (including polishing wheels) have poor heat resistance, and needs an increased grinding ability during high-speed and high-efficiency machining, which requires better ability to hold an abrasive, and at the same time, better cooling is required.
  • large elasticity and porosity are not conducive to the life and rigidity. Various factors restrict each other, thus limiting the application of high-speed and high-efficiency machining.
  • the present invention is directed to provide a grinding tool which is reliable in manufacturing process, optionally complex and simple in structure, feasible in function implementation, low in manufacturing cost, high in efficiency, energy-saving and safe, and a manufacturing method thereof.
  • a grinding tool comprises a plurality of thin teeth which are sequentially spliced and stacked to form an annular structure, wherein every two adjacent thin teeth are fixedly connected; and a groove body is formed between every two adjacent thin teeth.
  • the grinding tool further includes a substrate in a annular structure, and a pressing plate, wherein the annular structure formed by the plurality of the thin teeth is fixed on the substrate, the pressing plate has a ring-shaped structure, and the pressing plate is connected with the substrate by a bolt and presses the plurality of the thin teeth .
  • the plurality of thin teeth include a plurality of thin teeth A and a plurality of thin teeth B, wherein the plurality of thin teeth A and the plurality of thin teeth B are arranged in a staggered manner; or a plurality of elastic thin teeth A and one elastic thin tooth B are arranged in a staggered manner; or a plurality of elastic thin teeth A constitute groups of elastic thin teeth A, and a plurality of elastic thin teeth B constitute groups of elastic thin teeth B, and the groups of elastic thin teeth A and the groups of elastic thin teeth B are arranged in a staggered manner; when the thin tooth A and the thin tooth B are combined adjacently, the lower portion of the thin tooth A and the lower portion of the thin tooth B constitute an interlocking structure.
  • the elastic thin teeth A are made of a first bond and a first abrasive
  • the elastic thin teeth B are made of a second bond and a second abrasive.
  • the substrate is provided with a limiting groove arranged along the inner annular edge of the substrate; the lower portions of the plurality of thin teeth are embedded in the limiting groove, and upper portions of the plurality of thin teeth are all made of an abrasive layer.
  • the abrasive layer is made of diamond.
  • an end face of the pressing plate close to the thin teeth is inclined and is matched and close to end faces of the thin tooth, and a filler embedded in the pressing plate is arranged at a position of the pressing plate close to an annular end face of each thin tooth.
  • the plurality of the groove bodies is arranged in an annular shape along the annular structure, and each of the groove bodies is displaced from a radial direction of the annular structure.
  • a first bump in connection with the end is arranged at one side of the end.
  • a plurality of first convex textures is connected to the side wall of each thin tooth close to another thin tooth.
  • a plurality of second bumps is connected to the side wall of each thin tooth.
  • the plurality of the thin teeth includes a plurality of thin teeth C and a plurality of thin teeth D, wherein several thin teeth C are continuously spliced and stacked to form a first abrasive body, several thin teeth D are continuously spliced and stacked to form a second abrasive body, and a plurality of first abrasive bodies and a plurality of second abrasive bodies are spliced in a staggered manner to form an annular structure on the substrate; the width of the one end of each thin tooth C close to the inside of the substrate is greater than that of the other end of the thin tooth C, and the width of one end of each thin tooth D close to the inside of the substrate is smaller than that of the other end of the thin tooth D.
  • the end face of the annular structure is tightly attached to the edge of the substrate;
  • the pressing plate is in an annular shape and is placed on the upper end of the substrate;
  • a meshing position is provided on the side wall of one end of each thin tooth close to the inner annular side of the substrate, every two adjacent thin teeth engage with each other through the meshing position, and the lower end face of the pressing plate is inclined downward from the inner annular side to the outer annular side of the pressing plate to limit the plurality of thin teeth; one end of each of the thin teeth away from the inner annular side of the substrate is provided with a grinding structure.
  • an arc length of each point of the grinding structure on the thin tooth in an axial direction is in a positive relationship with a machining amount at this point.
  • each thin tooth is provided with a plurality of grooves in a radial direction of the annular structure, and the plurality of grooves form a net structure with the plurality of groove bodies to form a net grinding surface.
  • every two adjacent thin teeth are fixedly connected by gluing and/or by a fastener.
  • the bond for the plurality of thin teeth is an organic bond, an inorganic bond, or a composite bond.
  • the grinding tool is a thin-tooth spliced diamond grinding wheel.
  • a manufacturing method for the grinding tool includes the following steps:
  • the manufacturing method further includes step S4: consolidating the plurality of thin teeth to a substrate through the pressing plate and bolts.
  • Grinding tools are tools for grinding, milling, and polishing, including diamond grinding wheels, ordinary abrasive grinding wheels and polishing grinding wheels.
  • the grinding tools may also be in various forms such as grinding blocks and grinding discs.
  • the technical solution for thin-tooth spliced diamond grinding wheels may also be applied to diamond grinding wheels, ordinary abrasive grinding wheels and polishing grinding wheels.
  • a grinding tool includes a substrate 1 in an annular structure, a plurality of thin teeth 2 and a pressing plate 3.
  • the substrate 1 is provided with limiting grooves 5 arranged along the inner annular edge of the substrate 1.
  • the plurality of the thin teeth 2 is spliced and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1.
  • Lower portions of the plurality of thin teeth 2 are embedded in the limiting groove 5.
  • a groove body 4 is formed between upper portions of every two adjacent thin teeth 2.
  • the pressing plate 3 is in an annular structure.
  • the pressing plate 3 is connected to the substrate 1 by a bolt and presses the plurality of the thin teeth 2.
  • Upper portions of the plurality of the thin teeth 2 are made of an abrasive layer.
  • the abrasive layer is made of diamond.
  • a plurality of individual thin teeth 2 are spliced and stacked and consolidated into an abrasive body which has an annular structure.
  • the groove body 4 is a functional groove such as a water groove for circulating cooling water, a chip-holding groove, or a chip-removal groove or an air flow groove.
  • the groove body 4 is of a radial, axial, oblique, circumferential, grid or composite type.
  • Each surface of each thin tooth 2 may be a flat surface or a curved surface, and may also be a composite surface with convex textures or concave textures, or a combination of both convex and concave textures; or a surface with perforations.
  • the concave and convex textures on the surface of each thin tooth 2 are set in a dot, block, line, strip, or grid type, or a composite of dot, block, line, strip and grid types.
  • the groove body 4 in each embodiment is composed of plain textures, concave textures, convex textures, or a composite of concave and convex textures on two adjacent thin teeth 2.
  • the size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the annular width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm.
  • the height of each thin tooth 2 is 14 mm, wherein the height of the upper portion of each thin tooth 2 is 8 mm, and the height of the lower portion of each thin tooth 2 is 6 mm.
  • the end face area of the grinding wheel is 7210 mm 2
  • the area of the groove body 4 is 1530 mm 2
  • the proportion of the groove body 4 on the end face is 21.2%.
  • the thin teeth 2 are made by a powder metallurgy technology.
  • a feeding direction surface and a main pressing surface of each thin tooth 2 are the same surfaces with the largest area. Since the average thickness of each thin teeth 2 is only 1.856 mm, simple one-way pressing is sufficient. In comparison to the existing overall mold presetting manufacturing technology which requires two-way pressing, the mold height is greatly reduced, and the feeding is simple and easy.
  • the thin teeth 2 can be easily assembled and consolidated owing to their shapes.
  • the thin teeth 2 are spliced and stacked and consolidated to form the annular structure on the substrate 1.
  • a groove body 4 is formed between upper portions of every two adjacent thin teeth 2, and the width of the groove body 4 is 0.5 mm.
  • the plurality of thin teeth 2 includes a plurality of thin teeth A and a plurality of thin teeth B.
  • the plurality of thin teeth A and the plurality of thin teeth B are arranged in a staggered manner.
  • a plurality of elastic thin teeth A and one elastic thin tooth B are arranged in a staggered manner.
  • a plurality of elastic thin teeth A constitute groups of elastic thin teeth A
  • a plurality of elastic thin teeth B constitute groups of elastic thin teeth B
  • the groups of elastic thin teeth A and the groups of elastic thin teeth B are arranged in a staggered manner.
  • the elastic thin teeth A are made of a first bond and a first abrasive.
  • the elastic thin teeth B are made of a second bond and a second abrasive.
  • the elastic thin teeth A made of the first bond and the first abrasive have high hardness and long life.
  • the elastic thin teeth B made of the second bond and the second abrasive are highly elastic and easy to deform. The comprehensive effect may meet the cooling requirements during high-pressure machining. At the same time, a polishing device has a long service life.
  • the end face of the pressing plate 3 close to each thin tooth 2 is inclined and is matched and close to end faces of the thin teeth 2.
  • a filler 6 embedded in the pressing plate 3 is arranged at a position of the pressing plate 3 close to the annular end face of each thin teeth 2.
  • the filler 6 has a plastic deformation ability, and is made of an aluminum alloy, a copper alloy and other materials.
  • the pressing plate 3 is consolidated on the substrate 1 by a bolt or glue.
  • the grinding wheel is subjected to post-machining, such as shaping and sharpening to form a finished product.
  • the proportion of the groove body 4 on the end face is 42.4%.
  • the manufacturing process of the product of the present embodiment turns difficulty into simplicity, which achieves fast chip-removal, good cooling effect, easy manufacturing, and greatly improved performances.
  • FIG. 8 there is no local support structure on the surface of each thin tooth 2 of the product of the present invention, so the grinding tool of the present invention is more suitable for a grinding wheel has a small amount of grinding and low strength requirements for the thin teeth 2.
  • a grinding tool includes a substrate 1 in an annular structure, a plurality of thin teeth 2 and a pressing plate 3.
  • the substrate 1 is provided with a limiting groove 5 arranged along the inner annular edge of the substrate 1.
  • the plurality of the thin teeth 2 are spliced and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1.
  • Lower portions of the plurality of thin teeth 2 are embedded in the limiting groove 5.
  • a groove body 4 is formed between upper portions of every two adjacent thin teeth 2.
  • the pressing plate 3 has an annular structure.
  • the pressing plate 3 is connected to the substrate 1 by a bolt and presses the plurality of the thin teeth 2.
  • Upper portions of the plurality of the thin teeth 2 are made of an abrasive layer.
  • the abrasive layer is made of diamond.
  • a first bump 7 in connection with the end is arranged at one side of the end.
  • the size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the annular width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm.
  • the radial width of the first bump 7 is 2 mm, the raised height of the first bump 7 is 0.5 mm, and the first bump 7 serves to locally support every adjacent two thin teeth 2; the number of the thin teeth 2 is 180, and the width of the groove body 4 is 0.5 mm.
  • the thin teeth 2 are made by a powder metallurgy technology. A feeding direction surface and a main pressing surface of each thin tooth 2 are the same surfaces with the largest area, and the simple one-way pressing is adopted. The thin teeth 2 can be easily assembled and consolidated owing to their shapes. The thin teeth 2 are spliced and stacked and consolidated to form the annular structure on the substrate 1. After the plurality of the thin teeth 2 is spliced and stacked, they are consolidated onto the substrate 1 and subjected to post-machining, such as shaping and sharpening to form a finished tool product.
  • the first bump 7 forms a local support structure for the corresponding two adjacent thin teeth 2, which is equivalent to a continuous tooth structure, thereby eliminating the bounce and impact caused by intermittent grinding.
  • the local support structure is located at the outer diameter of the annular structure formed by the plurality of thin teeth 2. During machining, a part of the grinding wheel of the present embodiment close to the outer diameter will firstly contact a workpiece. Therefore, the strength of the thin teeth 2 against the impact at the outer diameter is greatly enhanced, which is beneficial for rough grinding and powerful machining.
  • the groove bodies 4 are formed to form an internal tooth structure when the plurality of thin teeth 2 are spliced and stacked. Cooling water is more likely to stay in the groove bodies 4 to achieve a better cooling effect.
  • a grinding tool includes a substrate 1 in an annular structure, a plurality of thin teeth 2 and a pressing plate 3.
  • the substrate 1 is provided with a limiting groove 5 arranged along the inner annular edge of the substrate 1.
  • the plurality of the thin teeth 2 are spliced and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1.
  • Lower portions of the plurality of thin teeth 2 are embedded in the limiting groove 5.
  • a groove body 4 is formed between upper portions of every two adjacent thin teeth 2.
  • the pressing plate 3 has an annular structure.
  • the pressing plate 3 is connected to the substrate 1 by a bolt and presses the plurality of the thin teeth 2.
  • Upper portions of the plurality of the thin teeth 2 are made of an abrasive layer.
  • the abrasive layer is made of diamond.
  • a plurality of first convex textures 8 is connected to the side wall of each thin tooth 2 close to another thin tooth 2.
  • the size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the annular width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm; each first convex texture 8 is a vertical triangle texture, the raised height of the triangle texture is 0.6 mm, and a distance between a plane formed by the vertex of a triangular texture projection of each thin tooth 2 and a circumferential plane of the adjacent thin tooth 2 is 0.3 mm; the number of the thin tooth 2 is 180, and the width of the narrowest portion of the groove body 4 is 0.3 mm.
  • each thin tooth 2 is provided with a plurality of grooves 9.
  • Each of the grooves 9 passes through two end faces of the corresponding thin tooth 2.
  • the grooves on the plurality of the thin teeth 2 are arranged along different circumferential radii to form a plurality of circular through grooves.
  • the plurality of circular through grooves and the plurality of groove bodies 4 intersect to form a net structure, thereby forming a net grinding surface.
  • each thin tooth 2 is formed with grooves 9 at the upper end of the thin tooth 2 due to fast abrasion on the circumference of each point in the radial direction of the annular structure.
  • the grooves 9 may not only drain water but also shorten the removal path of chips in the radial direction.
  • the grooves 9 and the adjacent groove bodies 4 form a net structure to form a net grinding surface, thereby improving cooling and chip-removal effects. Once formed, the grooves 9 remain there until the abrasive layer is completely consumed.
  • the plurality of grooves 9 may have the same diameter and form an annular structure.
  • the plurality of grooves 9 may also have different diameters and are distributed in sections on a part of the annular shape to serve for axial micro-frequency vibration grinding.
  • the net grinding surface formed from the net structure which is formed by the grooves 9 due to the abrasion, avoids the influence caused by circumferential groove bodies fabricated in the prior art through overall molding of molds on the strength of thin teeth, maintains the strength of the thin teeth 2 and greatly improves the heat dissipation capacity of the grinding wheel, thereby making the grinding wheel more suitable for high-speed machining.
  • This structure is of great significance for the development of grinding machining tools without cooling water, and has a structural principle suitable for the application of grinding blocks on grinding discs with various abrasives.
  • a grinding tool includes a substrate 1 in an annular structure, a plurality of thin teeth 2 and a pressing plate 3.
  • the substrate 1 is provided with a limiting groove 5 arranged along the inner annular edge of the substrate 1.
  • the plurality of the thin teeth 2 is spliced and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1.
  • Lower portions of the plurality of thin teeth 2 are embedded in the limiting groove 5.
  • a groove body 4 is formed between upper portions of every two adjacent thin teeth 2.
  • the pressing plate 3 has an annular structure.
  • the pressing plate 3 is connected to the substrate 1 by a bolt and presses the plurality of the thin teeth 2.
  • Upper portions of the plurality of the thin teeth 2 are made of an abrasive layer.
  • the abrasive layer is made of diamond.
  • a plurality of second bumps 10 which is circular or semi-circular is connected to a side wall of each thin tooth 2.
  • the size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the annular width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm; the raised height of the second bump 10 is 0.4 mm, and the diameter of the second bump 10 is 1 mm.
  • the vertex of the raised height of the plurality of second bumps 10 of each thin tooth 2 contacts the adjacent thin teeth 2, and every two adjacent thin teeth 2 support with each other by the plurality of second bumps 10.
  • the area of the end face of the grinding wheel is 7,210 mm 2
  • the area of the groove body 4 is about 1,632 mm 2
  • the proportion of the groove body 4 on the end face of the grinding wheel is 22.6%.
  • each thin tooth 2 in the present embodiment is 1.367 mm, and each thin tooth 2 is in contact with the plane of the adjacent thin teeth 2 through the corresponding second bump 10 to support each other, so that the rigidity of the grinding wheel is greatly improved.
  • the present embodiment may adopt a variety of bumps or grooves, or a composite structure of the bumps and the grooves.
  • the chip-removal path in the technical solution of the present embodiment is calculated to be reduced by 26.4%.
  • the circumferential cooling surface area in the technical solution of the present embodiment is calculated to be increased by 33.3%.
  • the diameter of the grinding wheel is 152 mm, the number of teeth of each thin teeth 2 is 240, and the width of the groove body 4 is 0.4 mm, which is difficult to accomplish with the existing overall manufacturing technology. Due to the above advantages, the present embodiment greatly expands the application space and application fields of fine-particle abrasive grinding wheels.
  • a grinding tool includes a substrate 1 in an annular structure, a plurality of thin teeth 2 and a pressing plate 3.
  • the substrate 1 is provided with a limiting groove 5 arranged along the inner annular edge of the substrate 1.
  • the plurality of the thin teeth 2 is spliced and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1.
  • Lower portions of the plurality of thin teeth 2 are embedded in the limiting groove 5.
  • a groove body 4 is formed between upper portions of every two adjacent thin teeth 2.
  • the pressing plate 3 has an annular structure.
  • the pressing plate 3 is connected to the substrate 1 by a bolt and presses the plurality of the thin teeth 2.
  • Upper portions of the plurality of the thin teeth 2 are made of an abrasive layer.
  • the abrasive layer is made of diamond.
  • the plurality of thin teeth 2 includes a plurality of thin teeth C and a plurality of thin teeth D, wherein several thin teeth C are continuously spliced and stacked to form a first abrasive body 11, and several thin teeth D are continuously stacked to form a second abrasive body 12.
  • a plurality of first abrasive bodies 11 and a plurality of second abrasive bodies 12 are spliced in a staggered manner to form the annular structure on the substrate 1.
  • the width of one end of each thin tooth C close to the inside of the substrate 1 is greater than that of the other end of the thin tooth C, and the width of one end of each thin tooth D close to the inside of the substrate 1 is smaller than that of the other end of the thin tooth D.
  • the size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the annular width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm.
  • the number of teeth of each thin teeth 2 is 180, the width of the widest portion of the groove body 4 is 1 mm, and the width of the narrowest portion of the groove body is 0.5 mm; 5 thin teeth C are continuously spliced and stacked to constitute a first abrasive body 11, 5 thin teeth D are continuously stacked to constitute a second abrasive body 12. 18 first abrasive bodies 11 and 18 second abrasive bodies 12 are spliced in a staggered manner to form the annular structure on the substrate 1.
  • first abrasive body 11 is continuously spliced and stacked to form a first abrasive body 11
  • second abrasive body 12 is continuously spliced and stacked to form a second abrasive body 12
  • a plurality of first abrasive bodies 11 and a plurality of second abrasive bodies 12 are spliced in a staggered manner to form the annular structure on the substrate 1 to form a composite grinding ring, thereby achieving an explicit or implicit double-ring or multi-ring structure.
  • the shapes of grinding surfaces of the first abrasive body 11 and the second abrasive body 12 may be different, the areas of an inner annular portion and an outer annular portion of each segment of the composite grinding ring may be different, and the pressure intensities and abrasions of the individual first abrasive bodies 11 or second abrasive bodies 12 during working may be different, so that the grinding surface of the composite grinding annular has an explicit difference in height and shape. If different bonds are used for the thin teeth C and the thin teeth D at the same time, the difference in performance of the inner annular portion and the outer annular portion of each segment of the composite grinding ring will cause different forces during grinding. The grinding surface of the composite grinding ring will have an implicit difference in force strength. Both the height difference and the strength difference form radial and axial frequency vibration grinding, thereby presenting a structural function of double rings or multiple rings, and exerting or surpassing the technical effect of the existing technical solutions.
  • a grinding tool includes a substrate 1 in an annular structure, a plurality of thin teeth 2 and a pressing plate 3.
  • the plurality of the thin teeth 2 is spliced and stacked along the substrate 1 to form the annular structure on the substrate 1.
  • the abrasive end face of the annular structure is closely attached to the edge of the substrate 1.
  • a groove body 4 is formed in the middle between every two adjacent thin teeth 2.
  • An arc length of each point of a grinding structure 14 on each thin tooth 2 in an axial direction is in a positive relationship with the machining amount at this point. The greater the machining amount at that point is, the greater the wear amount at this point is, the more likely the wear and deformation happen.
  • the pressing plate 3 is in an annular shape and is placed on the upper end of the substrate 1.
  • the pressing plate 3 is connected to the substrate 1 by a bolt and presses the plurality of the thin teeth 2.
  • the size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 150 mm; the annular width of the annular structure of the grinding wheel is 10 mm; the width of an opening of the grinding wheel is 12 mm, which is suitable for machining workpieces of 10 mm; and the height of the grinding wheel is 23 mm.
  • the width of the narrowest portion of the groove body 4 is 0.2 mm.
  • the thin teeth 2 are made by a powder metallurgy technology.
  • a feeding direction surface and a main pressing surface of each thin tooth 2 are the same surfaces with the largest area. Since the average thickness of each thin teeth 2 is only 1.394 mm, simple one-way pressing is sufficient. In comparison to the existing overall mold presetting manufacturing technology which requires two-way pressing, the mold height is greatly reduced, and the feeding is simple and easy.
  • the thin teeth 2 can be easily assembled and consolidated owing to their shapes. After the plurality of the thin teeth 2 are spliced and stacked, a groove body 4 is formed in the middle between every two adjacent thin teeth 2. The width of the narrowest portion of the groove body 4 is 0.2 mm when contacting a workpiece.
  • a meshing position 13 is provided on the side wall of one end of each thin tooth 2 close to the inner annular side of the substrate 1, and the corresponding two adjacent thin teeth 2 engage with each other through the meshing position 13.
  • the lower end face of the pressing plate 3 is inclined downward from the inner annular side to the outer annular side of the pressing plate 3 to limit the plurality of thin teeth 2, thereby preventing the plurality of thin teeth 2 from flying out during the grinding process.
  • the plurality of thin teeth 2 are consolidated on the substrate 1 by using auxiliary members, adhesives, etc.
  • a finished tool product is formed after post-machining such as shaping and sharpening, etc.
  • a grinding structure 14 is arranged at one end of each thin tooth 2 away from the inner annular side of the substrate 1.
  • the end face of each thin tooth 2 close to another thin tooth 2 has a convex texture structure.
  • the end face of each thin tooth 2 close to another thin tooth 2 has a concave texture structure 15.
  • the grinding structure 14 may be a concave texture, a convex texture or a concave-convex composite texture.
  • the prior art products are compared with the product in the present embodiments: according to the manufacturing process of the technical solution in the present embodiment, the difficulty is turned into simplicity, the thin teeth 2 that are difficult to fabricate by overall presetting can be fabricated, a narrow tooth structure that greatly shortens the chip-removal path and the groove bodies 4 for rapid cooling can be achieved. Therefore, dense internal water-cooling in a grinding area can be achieved conveniently, and the performances of the grinding wheel product are greatly improved.
  • a grinding tool further includes a substrate 1 in an annular structure, and a pressing plate 3.
  • the annular structure formed by the plurality of thin teeth 2 is fixed on the substrate 1.
  • the pressing plate 3 has a ring-shaped structure.
  • the pressing plate 3 is connected to the substrate 1 by a bolt and presses the plurality of the thin teeth 2.
  • a plurality of groove bodies 4 is arranged in an annular shape along the annular structure. Each of the groove bodies 4 is displaced from a radial direction the annular structure.
  • a grinding tool includes a substrate 1 in an annular structure and a plurality of thin teeth 2.
  • the substrate 1 is provided with a limiting groove 5 arranged along the inner annular edge of the substrate 1.
  • the plurality of thin teeth 2 is spliced and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1.
  • Lower portions of the plurality of thin teeth 2 are embedded in the limiting groove 5 and are bonded to the substrate 1 by glue.
  • a groove body 4 is formed between upper portions of every two adjacent thin teeth 2.
  • the grinding tool When in use, the grinding tool is pressed on a mounting bottom plate 16 by a pressing plate, is connected to a flange plate on a motor shaft by a bolt and presses the plurality of the thin teeth 2.
  • the upper portions of the plurality of thin teeth 2 are made of an abrasive layer.
  • the abrasive layer is made of an organic bond, an inorganic bond or a composite bond and an abrasive. Different amounts of porosity are set in the abrasive layer.
  • the abrasive layer is also a working layer.
  • the inorganic bond is metal, ceramic or magnesite.
  • the organic bond is resin or rubber.
  • the composite bond is ceramic resin.
  • a third bump 18 in connection with the end is arranged at one side of the end.
  • a plurality of fourth bumps 19 which are circular or semicircular is connected to a side wall of each thin tooth 2. Every two adjacent thin teeth 2 are pressed tightly with each other by the plurality of fourth bumps 19 to achieve mutual support.
  • a variety of bumps or groove, or a composite structure of the bumps and the grooves may be used to form a mutual support structure or a fly-out prevention structure 17.
  • the thin teeth 2 are made of an organic bond.
  • a feeding direction surface and a main pressing surface of each thin tooth 2 are the same surfaces with the largest area, such that simple one-way pressing is adopted.
  • the thin teeth 2 can be easily assembled and consolidated owing to their shapes.
  • the plurality of thin teeth 2 are spliced and stacked and consolidated to form the annular structure on the substrate 1.
  • a finished tool product is formed after pose-machining such as shaping.
  • Every two adjacent thin teeth 2 are coupled by gluing with the aid of an adhesive.
  • a mutual pressed support is achieved by the plurality of fourth bumps 19, so that the rigidity of a polishing wheel with an organic bond is satisfied to solve the problem in the prior art that the polishing wheel has a poor rigidity and is easy to deform after being provided with grooves and pores.
  • the overall elasticity of the product can be adjusted to a certain extent by adjusting the structure shape, number, and size of the fourth bumps 19.
  • the overall heat resistance of the product is improved through structural functions.
  • a part of the pore structure that originally needs to be placed inside the bond may be replaced, such that the porosity is reduced, the ability to hold abrasives is improved, and the high-speed and high-efficiency machining capacity is greatly improved.
  • a grinding tool includes a substrate 1 in an annular structure 1, and a plurality of teeth thin 2.
  • the thin tooth 2 includes thin teeth E and thin teeth F.
  • a plurality of the thin teeth E and a plurality of thin teeth F are arranged in a staggered manner.
  • the substrate 1 is provided with a limiting groove 5 arranged along the inner annular edge of the substrate 1.
  • the plurality of thin teeth 2 is spliced and stacked in a radial direction of the substrate 1 to form an annular structure.
  • a groove body 4 is formed between every two adjacent thin teeth 2, i.e., the groove body 4 is formed between each thin tooth E and the corresponding thin tooth F.
  • the lower end portion of the annular structure is provided with a fly-out prevention structure 17.
  • the limiting groove 5 of the substrate 1 engages with the fly-out prevention structure 17 on the annular structure.
  • the annular structure is clamped and consolidated by the substrate 1 and the pressing plate 3.
  • the pressing plate 3 presses the plurality of the thin teeth 2.
  • the plurality of the thin teeth 2 is made of an abrasive layer.
  • the thin teeth E are flat thin teeth, and the thin teeth F are wavy thin teeth.
  • Each thin tooth E and each thin tooth F have the same circumferential thickness at each point in the axial direction, that is, cumulative total circumferential arc lengths of the thin tooth E and the thin tooth F are the same in the respective points in the axial direction, so that a grinding surface of the grinding wheel has good resistance to deformation in grooving machining.
  • a grinding tool includes a substrate 1 in an annular structure, and a plurality of thin teeth 2.
  • the substrate 1 is provided with a limiting groove 5 arranged along the inner annular edge of the substrate 1.
  • the plurality of the thin teeth 2 is spliced and stacked in a radial direction of the substrate 1 to form an annular structure.
  • the annular structure is glued by an adhesive.
  • a groove body 4 is formed between every two adjacent thin teeth 2.
  • a fly-out prevention structure 17 is provided on the end face of the annular structure.
  • the annular structure is clamped and consolidated by the substrate 1 and the pressing plate 3.
  • the limit groove 5 of the substrate 1 engages with the fly-out structure 17 on the annular structure.
  • the plurality of the thin teeth 2 is pressed by the pressing plate 3.
  • the plurality of the thin teeth 2 are all made of an abrasive layer.
  • the present invention also relates to a manufacturing method for a grinding tool, which includes the following steps:
  • the manufacturing method may further include a step S4: the plurality of thin teeth 2 are consolidated to the substrate 1 through the pressing plate 3 and bolts.

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Claims (16)

  1. Un outil de meulage, comprenant une pluralité de dents fines (2) qui sont séquentiellement épissées et empilées pour former une structure annulaire, dans laquelle toutes les deux dents fines adjacentes (2) sont reliées de manière fixe ; et un corps de rainure (4) est formé entre toutes les deux dents fines adjacentes (2), dans lequel le rapport entre une longueur radiale moyenne de chaque dent fine (2) et une largeur circonférentielle moyenne de celle-ci est supérieur à 2,5,
    comprenant un substrat (1) dans une structure annulaire, et une plaque de pressage (3), dans laquelle la structure annulaire formée par la pluralité de dents fines (2) est fixée sur le substrat (1), la plaque de pressage (3) a une structure en forme d'anneau, et la plaque de pressage (3) est reliée au substrat (1) par un boulon et presse la pluralité de dents fines (2),
    dans lequel la pluralité de dents fines (2) comprend une pluralité de dents fines A et une pluralité de dents fines B, et la pluralité de dents fines A et la pluralité de dents fines B sont disposées en quinconce ; ou plusieurs dents fines élastiques A et une dent fine élastique B sont disposées en quinconce ; ou plusieurs dents fines élastiques A constituent des groupes de dents fines élastiques A, plusieurs dents fines élastiques B constituent des groupes de dents fines élastiques B, et les groupes de dents fines élastiques A et les groupes de dents fines élastiques B sont disposés en quinconce ;
    caractérisé par le fait que les dents fines élastiques A sont constituées d'un premier liant et d'un premier abrasif, et que les dents fines élastiques B sont constituées d'un second liant et d'un second abrasif.
  2. Outil de meulage selon la revendication 1, dans lequel le substrat (1) est pourvu d'une rainure de limitation (5) disposée le long du bord annulaire intérieur du substrat (1) ; les parties inférieures de la pluralité de dents fines (2) sont encastrées dans la rainure de limitation (5), et les parties supérieures de la pluralité de dents fines (2) sont toutes constituées d'une couche abrasive.
  3. Outil de meulage selon la revendication 2, dans lequel la couche abrasive est constituée de diamant.
  4. Outil de meulage selon la revendication 1, dans lequel une face d'extrémité de la plaque de pression (3) proche des dents fines (2) est inclinée et correspond aux faces d'extrémité des dents fines (2), et une charge (6) encastrée dans la plaque de pression (3) est disposée à une position de la plaque de pression (3) proche d'une face d'extrémité annulaire de chaque dent fine (2).
  5. Outil de meulage selon la revendication 1, dans lequel une pluralité de corps de rainure (4) est disposée en forme annulaire le long de la structure annulaire, et chacun des corps de rainure (4) est décalé par rapport à une direction radiale de la structure annulaire.
  6. Outil de meulage selon l'une des revendications 1 à 5, dans lequel à une extrémité de chaque dent fine (2) éloignée de la face annulaire intérieure du substrat (1), une première bosse (7) en rapport avec l'extrémité est disposée sur un côté de l'extrémité.
  7. Outil de meulage selon l'une des revendications 1 à 4, dans lequel une pluralité de premières textures convexes (8) est reliée à une paroi latérale de chaque dent fine (2) à proximité d'une autre dent fine (2).
  8. Outil de meulage selon la revendication 6, dans lequel une pluralité de secondes bosses (10) est reliée à une paroi latérale de chaque dent fine (2).
    Outil de meulage selon l'une des revendications 1, 2, 3 et 4, dans lequel la pluralité de dents fines (2) comprend une pluralité de dents fines C et une pluralité de dents fines D, plusieurs dents fines C étant continuellement épissées et empilées pour former un premier corps abrasif (11), plusieurs dents fines D sont jointes en continu et empilées pour former un deuxième corps abrasif (12), et plusieurs premiers corps abrasifs (11) et plusieurs deuxièmes corps abrasifs (12) sont joints en quinconce pour former la structure annulaire sur le substrat (1) ; la largeur de l'une des extrémités de chaque dent fine C proche de l'intérieur du substrat (1) est supérieure à celle de l'autre extrémité de la dent fine C, et la largeur de l'une des extrémités de chaque dent fine D proche de l'intérieur du substrat (1) est inférieure à celle de l'autre extrémité de la dent fine D.
  9. Outil de meulage selon la revendication 1, dans lequel la face d'extrémité de la structure annulaire est étroitement fixée au bord du substrat (1) ; la plaque de pression (3) a une forme annulaire et est placée sur l'extrémité supérieure du substrat (1) ;
  10. une position d'engrènement (13) est prévue sur la paroi latérale d'une extrémité de chaque dent fine (2) à proximité de la face annulaire intérieure du substrat (1), toutes les deux dents fines adjacentes (2) s'engrenant l'une dans l'autre par la position d'engrènement (13), et la face inférieure de la plaque de pressage (3) est inclinée vers le bas depuis le côté annulaire intérieur jusqu'au côté annulaire extérieur de la plaque de pressage (3) pour limiter la pluralité de dents fines (2) ; une extrémité de chacune des dents fines (2) éloignée du côté annulaire intérieur du substrat (1) est pourvue d'une structure de meulage (14).
  11. Outil de meulage selon la revendication 1, dans lequel l'extrémité supérieure de chaque dent fine (2) est pourvue d'une pluralité de rainures (9) dans une direction radiale de la structure annulaire, et la pluralité de rainures (9) forme une structure nette avec la pluralité de corps de rainures (4) pour former une surface de meulage nette.
  12. Outil de meulage selon la revendication 1, dans lequel toutes les deux dents fines adjacentes (2) sont reliées de manière fixe par collage et/ou par une attache.
  13. Outil de meulage selon la revendication 1, dans lequel la liaison pour la pluralité de dents fines (2) est une liaison organique, une liaison inorganique ou une liaison composite.
  14. Outil de meulage selon l'une des revendications 1 à 4 et 10 à 13, dans lequel l'outil de meulage est une meule diamantée épissée à dents fines.
  15. Procédé de fabrication d'un outil de meulage, selon l'une des revendications 1 à 14, comprenant les étapes suivantes :
    S1. fabriquer des dents fines (2) selon une structure définie, de sorte que le rapport entre la longueur radiale moyenne de chaque dent fine (2) et sa largeur circonférentielle moyenne soit supérieur à 2,5 ;
    S2. Fabriquer une surface de pression principale de chaque dent fine comme surface de travail non abrasive, dans laquelle la surface de pression principale est une surface ayant la plus grande surface de la dent fine ; et
    S3. joindre et empiler et relier de manière fixe les surfaces de pression principales de la pluralité de dents minces (2) pour former une structure annulaire, où le corps de la rainure 4 est formé entre toutes les deux dents adjacentes 2.
  16. La méthode de fabrication de l'outil de meulage selon la revendication 15, comprenant en outre l'étape S4 : consolider la pluralité de dents minces (2) sur le substrat (1) par l'intermédiaire d'une plaque de pression (3) et de boulons.
EP19767677.8A 2018-03-12 2019-03-12 Outil abrasif et procédé de fabrication associé Active EP3766637B1 (fr)

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CN201820334241.3U CN207629869U (zh) 2018-03-12 2018-03-12 一种薄片齿拼合式金刚石砂轮
CN201810201963.6A CN108188945B (zh) 2018-03-12 2018-03-12 一种薄片齿拼合式金刚石砂轮及制作方法
PCT/CN2019/077870 WO2019174580A1 (fr) 2018-03-12 2019-03-12 Outil abrasif et procédé de fabrication associé

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CN108188945B (zh) * 2018-03-12 2023-08-01 桂林创源金刚石有限公司 一种薄片齿拼合式金刚石砂轮及制作方法

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JP7105507B2 (ja) 2022-07-25
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EP3766636A1 (fr) 2021-01-20
EP3766637A4 (fr) 2022-01-12
KR20210003090A (ko) 2021-01-11
EP3766637C0 (fr) 2024-04-17
JP2021516170A (ja) 2021-07-01
EP3766637A1 (fr) 2021-01-20
WO2019174580A1 (fr) 2019-09-19
WO2019174581A1 (fr) 2019-09-19

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