Long thorn grinding head and production process thereof

Abstract

The invention relates to a long thorn grinding head and a production process thereof, and belongs to the field of grinding tools, the long thorn grinding head comprises a base body, a plurality of long thorns are arranged on the base body, the long thorns are conical, the tips of the long thorns are arranged in the direction away from the base body, and the extending direction of the long thorns is perpendicular to the surface, where the roots of the long thorns are located, of the base body. The tapered long thorns are arranged on the special-shaped base body, so that the polishing of a tough material is realized, and meanwhile, the special-shaped surface polishing device is also suitable for a special-shaped surface.

Description

TECHNICAL FIELD

[0001] The present application relates to a long-spur grinding head and its production process, belonging to the field of grinding tools. BACKGROUND

[0002] Grinding tools are used for grinding, polishing or removing material from the surface of an object, widely used in mechanical processing, surface treatment, metal processing and other fields. They are usually made of hard materials, with wear resistance and high strength.

[0003] Mold is usually divided into ordinary mold and superhard mold; Ordinary grinding tools are sandpaper, grinding wheel, cutting sheet, etc., and their materials are mostly silicon carbide, aluminum oxide, The material of superhard mold is diamond; And the diamond mold is divided into two types; Type one, half of the diamond is buried in the base material, and the other half is outside the base material, that is, half-buried diamond powder; Type two, multiple layers of diamond are laid in the base material, that is, full-buried diamond powder; The above two molds can only be used for grinding hard, medium-hard and brittle materials, but for soft wood, rubber and other materials with toughness, it is easy to slip during grinding, and it is difficult to effectively grind; In addition, there are steel grinding tools on the market, which have multiple chisel teeth on the surface, similar to a steel file, which are specially used for grinding tough materials, but this mold has low hardness, short service life, and fixed grinding shape, which is difficult to adapt to the grinding requirements of special-shaped surfaces; Therefore, a long-spur grinding head and its production process are needed to realize the grinding of tough materials and adapt to special-shaped surfaces. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a long-spur grinding head and its production process which can grind tough materials and adapt to special-shaped surfaces.

[0005] The technical solution adopted by the present application to solve the above problems is: a long-spur grinding head, comprising a base body, a plurality of long spurs are arranged on the base body, the long spurs are conical, the tips of the long spurs are arranged away from the base body, and the extension direction of the long spurs is perpendicular to the surface of the base body where the root of the long spur is located.

[0006] As a preferred embodiment, the shape of the base body is special-shaped.

[0007] As a preferred embodiment, the shape of the base body is any one of T-shaped, olive-shaped, spherical, round head cylindrical, grinding disc-shaped, and British tooth round head cylindrical.

[0008] As preferred, the material of the long spikes is a combination of tungsten carbide hard alloy particles and high hardness alloy powder.

[0009] As preferred, the particle size of the tungsten carbide hard alloy particles is 300 mesh to 1000 mesh, and the particle size of the high hardness alloy powder is 100 mesh to 800 mesh.

[0010] As preferred, the material of the substrate is one of high speed steel or 40Cr.

[0011] As preferred, the diameter of the conical long spikes is 0.5mm to 3mm.

[0012] As preferred, the diameter of the conical long spikes is any one of 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 2mm, 2.5mm and 3mm.

[0013] A long spike grinding head production process, specifically comprising the following steps: Step 1, preparing a substrate; CNC machining the substrate; Step 2, preparing long spike raw materials; Step 2.1, 3D mixing the combination of tungsten carbide hard alloy particles and high hardness alloy powder, and an adhesive in proportion, the high hardness alloy powder is nickel-chromium alloy powder, and the adhesive is PR8000 resin powder; wherein the concentration of tungsten carbide hard alloy particles in the combination is 10% to 175%, the density of tungsten carbide hard alloy particles is 14.7 grams per cubic centimeter, the density of high hardness alloy powder is 7.9 grams per cubic centimeter, and the adhesive accounts for 5% to 25% of the total volume of the raw materials; Step 2.2, heating the raw materials; Heating the mixed raw materials so that the adhesive in the raw materials melts, i.e. so that the raw materials form a fluid; Step 3, 3D printing; The mixed and heated raw materials are applied to the substrate by a 3D printing device, and the raw materials form conical long spikes on the substrate; Step 4, vacuum brazing and shaping; A vacuum brazing device is used to shape the long spikes printed on the substrate, when the shaping temperature reaches 600℃, the adhesive volatilizes, the shaping temperature is 820℃ to 1100℃, and the shaping vacuum degree is to ; At this time, the tungsten carbide hard alloy particles and the high hardness alloy powder are chemically and metallurgically combined by high temperature.

[0014] As preferred, in step 2.1, the mixing time is 1 hour to 5 hours.

[0015] As preferred, the heating temperature in step 2.2 is 150-200°C.

[0016] Compared with the prior art, the present application has the advantages of: The long-stick grinding head and its production process have the advantages of realizing grinding of tough materials and being suitable for irregular surfaces. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The flow chart of the production process of the long-stick grinding head; Figure 2 The structure diagram of the T-shaped long-stick grinding head; Figure 3 The structure diagram of the olive-shaped long-stick grinding head; Figure 4 The structure diagram of the spherical long-stick grinding head; Figure 5 The structure diagram of the grinding disc-shaped long-stick grinding head; Figure 6 The structure diagram of the long-stick grinding head with an English tooth round head and a cylindrical shape; Figure 7 The structure diagram of the long-stick grinding head with a round head and a cylindrical shape; Figure 8 The perspective view of the 3D printing device; Figure 9 The front view of the 3D printing device; Figure 10 The left view of the 3D printing device; Figure 11 The structure diagram of the moving mechanism; Figure 12 The structure diagram of the rotating mechanism; Figure 13 The structure diagram of Example 1; Figure 14 The structure diagram of Example 2; Figure 15 The structure diagram of Example 3.

[0018] Wherein: base body 1, long stick 2; Support 100, moving mechanism 200, rotating mechanism 300, material pipe 400, clamping seat 500; First connecting seat 201, first lead screw 202, first sliding block 203, first motor 204, second connecting seat 205, second lead screw 206, second sliding block 207, second motor 208; Rotating disc 301, third motor 302, support plate 303, driving wheel 304, driven wheel 305, fourth motor 306, transmission belt 307. DETAILED DESCRIPTION

[0019] As Figures 1 to 15 shown in the embodiment, a long spike grinding head comprises a base body 1, a plurality of long spikes 2 are arranged on the base body 1, the long spikes 2 are conical, the tips of the long spikes 2 are arranged away from the base body 1, the extending direction of the long spikes 2 is perpendicular to the surface of the base body 1 where the roots of the long spikes 2 are located, the material of the base body 1 is one of high-speed steel or 40Cr, the material of the long spikes 2 is a combination of tungsten carbide (WC) hard alloy particles and high-hardness alloy powder, the particle size of the tungsten carbide hard alloy particles is 300-1000 mesh, and the particle size of the high-hardness alloy powder is 100-800 mesh; The shape of the base body 1 is special-shaped, and the specific shape is one of T-shaped, olive-shaped, spherical, round-head cylindrical, grinding disc-shaped, and British tooth round-head cylindrical, so that it is convenient to be suitable for special-shaped surfaces; When the base body 1 is T-shaped, the base body 1 comprises a disc segment at the top and a rod segment arranged below the disc segment, the outer circle of the disc segment is outwardly provided with long spikes 2, and the outer edge of the top surface and the outer edge of the bottom surface of the disc segment are respectively upwardly and downwardly provided with long spikes 2; When the base body 1 is olive-shaped, the base body 1 comprises an olive segment at the top and a rod segment arranged below the olive segment, and the surface of the olive segment is provided with long spikes 2; When the base body 1 is spherical, the base body 1 comprises a spherical segment at the top and a rod segment arranged below the spherical segment, and the surface of the spherical segment is provided with long spikes 2; When the base body 1 is round-head cylindrical, the base body 1 comprises a cylindrical segment, a round-head segment arranged above the cylindrical segment, and a rod segment arranged below the cylindrical segment, the round-head segment is hemispherical, the spherical side of the round-head segment is arranged away from the cylindrical segment, the spherical diameter of the round-head segment is equal to the diameter of the cylindrical segment, the diameter of the rod segment is smaller than the diameter of the cylindrical segment, and the outer peripheral wall of the cylindrical segment and the spherical surface of the round-head segment are provided with long spikes 2; When the base body 1 is grinding disc-shaped, the top of the base body 1 is inwardly and outwardly provided with a concave area, a grinding area and a circular arc area, the concave area is circular truncated cone-shaped, the grinding area is trapezoidal cylindrical, the top diameter of the grinding area is smaller than the bottom diameter, the circular arc area is located at the large-diameter end of the grinding area, and the long spikes 2 are arranged on the outer surface of the grinding area and the outer surface of the circular arc area; When the base body 1 is British tooth round-head cylindrical, the base body 1 comprises a cylindrical segment, a round-head segment arranged above the cylindrical segment, and a rod segment arranged below the cylindrical segment, the round-head segment is hemispherical, the spherical side of the round-head segment is arranged away from the cylindrical segment, the spherical diameter of the round-head segment is equal to the diameter of the cylindrical segment, the diameter of the rod segment is greater than the diameter of the cylindrical segment, the connection between the rod segment and the cylindrical segment is transitioned through a circular arc, and the outer peripheral wall of the cylindrical segment and the spherical surface of the round-head segment are provided with long spikes 2. The diameter of the long spike 2 is 0.5mm to 3mm, specifically any one of 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 2mm, 2.5mm and 3mm; A long spike grinding head production process, specifically comprising the following steps: Step 1, preparing the base body 1; The base body 1 is processed by CNC (Computer Numerical Control), wherein the material of the base body 1 is high-speed steel or 40Cr; Step 2, preparing the raw material of the long spike 2; Step 2.1, mixing the composition of tungsten carbide hard alloy particles and high-hardness alloy powder and the adhesive according to the proportion by 3D, the mixing time is 1 hour to 5 hours, the high-hardness alloy powder is nickel-chromium alloy powder, and the adhesive is PR8000 resin powder; Wherein, the concentration of tungsten carbide hard alloy particles in the composition is 10% to 175%, the density of tungsten carbide hard alloy particles is 14.7 grams per cubic centimeter, the density of high-hardness alloy powder is 7.9 grams per cubic centimeter, and the adhesive accounts for 5% to 25% of the total volume of the raw material; Here, it should be noted that in the abrasive tool industry, when the tungsten carbide hard alloy particles account for 25% of the total volume of the composition, the concentration is defined as 100%; For example, when the concentration of the composition is 100%, the weight of the tungsten carbide hard alloy particles is 3.675 (0.25*14.7) grams, and the weight of the high-hardness alloy powder is 5.925 (0.75*7.9) grams, that is, the weight of 1 cubic centimeter of the composition is 9.6 (3.675+5.925) grams; When the concentration of the composition is 50%, the weight of the tungsten carbide hard alloy particles is 1.8375 (0.125*14.7) grams, and the weight of the high-hardness alloy powder is 6.9125 (0.875*7.9) grams, that is, the weight of 1 cubic centimeter of the composition is 8.75 (1.8375+6.9125) grams; When the concentration of the composition is 175%, the weight of the tungsten carbide hard alloy particles is 6.43125 (0.4375*14.7) grams, and the weight of the high-hardness alloy powder is 4.44375 (0.5625*7.9) grams, that is, the weight of 1 cubic centimeter of the composition is 10.875 (6.43125+4.44375) grams; When the concentration of the composition is 10%, the weight of the tungsten carbide hard alloy particles is 0.3675 (0.025*14.7) grams, and the weight of the high-hardness alloy powder is 7.7025 (0.975*7.9) grams, that is, the weight of 1 cubic centimeter of the composition is 8.07 (0.3675+7.7025) grams; Step 2.2, heating the raw material; The mixed raw materials are heated at a temperature of 150-200 DEG C to melt the adhesive in the raw materials, i.e. to make the raw materials into a fluid; Step 3, 3D printing; The mixed and heated raw materials are applied to the base 1 by a 3D printing device, and the raw materials form the conical long spikes 2 on the base 1; The 3D printing device comprises a support 100, a moving mechanism 200, a rotating mechanism 300, a material pipe 400 and a clamping seat 500 are arranged on the support 100, the input end of the material pipe 400 is connected with an air source, the output end of the material pipe 400 is needle tube-shaped, the material pipe 400 is connected with the moving mechanism 200, and the up-down and left-right movements of the material pipe 400 are realized through the moving mechanism 200, the clamping seat 500 is column-shaped, and the clamping seat 500 is connected with the rotating mechanism 300, and the rotation of the clamping seat 500 is realized through the rotating mechanism 300; The moving mechanism 200 comprises a first moving module and a second moving module, the second moving module is connected with the movable part of the first moving module, the left-right movement of the second moving module is realized through the first moving module, and the material pipe 400 is connected with the movable part of the second module, and the lifting of the material pipe 400 is realized through the second moving module; The first moving module comprises a first connecting seat 201, a first lead screw 202 and a first sliding block 203, the first connecting seat 201 is fixedly connected with the support 100, the first lead screw 202 is parallel to the left-right direction, the first lead screw 202 is driven through a first motor 204, the first lead screw 202 is rotationally connected with the first connecting seat 201, the first sliding block 203 is threadedly connected with the first lead screw 202, the second moving module is connected with the first sliding block 203, when the first motor 204 is started, the first lead screw 202 rotates on the first connecting seat 201, and the first sliding block 203 moves leftward or rightward on the first lead screw 202, and the movement of the first sliding block 203 drives the second moving module to move synchronously; The second moving module comprises a second connecting seat 205, a second lead screw 206 and a second sliding block 207, the second connecting seat 205 is fixedly connected with the first sliding block 203, the second lead screw 206 is vertically arranged, the second lead screw 206 is driven through a second motor 208, the second lead screw 206 is rotationally connected with the second connecting seat 205, the second sliding block 207 is threadedly connected with the second lead screw 206, and the material pipe 400 is fixedly connected with the second sliding block 207, when the second motor 208 is started, the second lead screw 206 is driven to rotate, so that the second sliding block 207 rises or falls on the second lead screw 206, and the rising and falling of the second sliding block 207 drives the material pipe 400 to rise and fall synchronously; The rotating mechanism 300 comprises a first rotating assembly and a second rotating assembly; The first rotating assembly comprises a rotating disc 301, the axis of the rotating disc 301 is parallel to the front-rear direction, the rotating disc 301 is driven by a third motor 302, a supporting plate 303 is fixedly arranged on the rotating disc 301, the clamping seat 500 is arranged on the supporting plate 303, the clamping seat 500 is rotationally connected with the supporting plate 303, the second rotating assembly is arranged on the supporting plate 303, the second rotating assembly is connected with the clamping seat 500, the self-rotation of the clamping seat 500 is realized by the first rotating assembly, when the third motor 302 is started, the rotating disc 301 is driven to rotate by a set angle, the rotation of the rotating disc 301 drives the supporting plate 303 and the clamping seat 500 to synchronously rotate; The second rotating assembly comprises a driving wheel 304 and a driven wheel 305, the driven wheel 305 is installed on the clamping seat 500, the driving wheel 304 is driven by a fourth motor 306, the driving wheel 304 and the driven wheel 305 are connected by a transmission belt 307, the driving wheel 304 is driven by the fourth motor 306, the fourth motor 306 is fixedly arranged on the supporting plate 303, when the fourth motor 306 is started, the driving wheel 304 is driven to rotate, the rotation of the driving wheel 304 drives the driven wheel 305 to rotate through the transmission belt 307, the rotation of the driven wheel 305 drives the clamping seat 500 to synchronously rotate; The clamping seat 500 is arranged in an inclined manner, the axis of the clamping seat 500 is perpendicular to the axis of the rotating disc 301, the clamping end of the clamping seat 500 is arranged upwards; Step 3.1, fix the base body 1; The base body 1 is fixed on the mounting end of the clamping seat 500; After the raw material is conveyed into the material pipe 400, the position of the material pipe 400 in the left-right direction is adjusted by the first moving module; The rotation of the clamping seat 500 is set by the first rotating assembly and the second rotating assembly, and the base body 1 is inclined and the printing end of the base body 1 faces the material pipe 400; Step 3.2, print a long thorn 2 on the printing end of the base body 1; The material pipe 400 is reciprocatingly lifted once by the second moving module; When the material pipe 400 is lowered, the output end of the material pipe 400 is in contact with the printing end of the base body 1; The air pressure in the material pipe 400 is increased by the air source, and under the action of the air pressure, the raw material in the material pipe 400 is discharged from the output end and acts on the printing end of the base body 1; Then, the material pipe 400 is lifted by the second moving module, and the raw material acting on the base body 1 forms a cone shape; Step 3.3, adjust the angle of the base body 1 and the position of the material pipe 400; The base 1 on the clamping seat 500 is rotated by the first rotating assembly and the second rotating assembly by a set angle, and the material pipe 400 is moved by the first moving module by a set distance along the left-right direction; Repeat step 3.2 to complete the printing of the next long thorn 2; Step 3.4, repeat step 3.3 until all long thorns 2 are printed and form a spiral shape; Step 3.5, remove the printed base 1, and perform the printing action of the next base 1; In example 1, the base 1 is a grinding disc type, the distance between adjacent two long thorns 2 in the spiral direction is 5mm, the outer side of the base 1 is a circular arc shape, the angle is 77.9636°, the radius is 5.5mm, the printing surface of the base 1 is a circular truncated cone surface (a curved surface connecting the upper and lower two circular bottom surfaces), and the middle diameter of the circular truncated cone surface is 83.8mm, and the maximum diameter of the base 1 is 109.5mm; The data required for editing the program and the calculation method are as follows: 83.8×3.14÷5=52.6264≈53 (the number of points in one circle); 5÷(83.8×3.14÷5)≈0.095 (X-axis data); 360÷(83.8×3.14÷5)≈6.841 (Y-axis data); 77.9636÷360×(5.5×2×3.14)≈7.48 (arc length); 7.48÷5=1.496 (the number of points in one arc part); 109.5×3.14÷5=68.766≈69 (the number of points in one circle); 5÷(109.5×3.14÷5)≈0.073 (C-axis data); 360÷(109.5×3.14÷5)≈5.235 (arc part, Y-axis data); In example 2, the base 1 is an olive type, the angle of the arc surface is 74.7201°, the radius of the arc surface is 24.54, the distance between adjacent two long thorns 2 in the spiral direction is 3mm, and the width of the olive type is 14.5mm; The data required for editing the program and the calculation method are as follows: 74.7201÷360×(24.54×2×3.14)≈31.986 (arc length); 31.986÷3=10.662 (the number of points in one arc part); 14.5×3.14÷3=15.177≈15 (the number of points in one circle); 3÷(14.5×3.14÷3)≈0.198 (C-axis data); 360 ÷ (14.5 x 3.14 ÷ 3) = 23.72 (arc part, Y-axis data); In Example 3, the base 1 is a circular cylinder, and the printing surface is composed of a semispherical surface and a cylindrical surface. The length of the cylindrical surface is 19.5 mm, and the diameter of the cylindrical surface and the diameter of the semispherical surface are both 9.5 mm. The distance between two adjacent long spikes 2 in the spiral direction is 2.2 mm. The data required by the editing program and the calculation method are as follows: 9.5 x 2 x 3.14 ÷ 2.2 = 27.118 = 27 (the number of points in one circle of the cylindrical part); 2.2 ÷ (9.5 x 2 x 3.14 ÷ 2.2) = 0.081 (X-axis data); 19.5 ÷ 2.2 = 8.864 (the number of circles of the cylindrical part); 360 ÷ (9.5 x 2 x 3.14 ÷ 2.2) = 13.275 (Y-axis data); 9.5 x 2 x 3.14 x (90 ÷ 360) = 14.915 (arc length); 14.915 ÷ 2.2 = 6.78 (the number of circles of the arc part); 16.84 x 3.14 ÷ 2.2 = 24.035 = 24 (the number of points in one circle); 2.2 ÷ (16.84 x 3.14 ÷ 2.2) = 0.092 (C-axis data); 360 ÷ 24 = 15 (arc part, Y-axis data); During the work, the calculated data are used to control the rotation angles of the output shafts of the first motor 204, the second motor 208, the third motor 302, and the fourth motor 306, so that the base and the material pipe 400 are adjusted to the corresponding positions. Step 4, vacuum brazing and shaping; The long spikes 2 printed on the base 1 are shaped by using a vacuum brazing device. When the shaping temperature reaches 600℃, the adhesive volatilizes. The shaping temperature is 820℃ to 1100℃, and the shaping vacuum degree is 0.1 to 0.2 Pa. to ; At this time, the tungsten carbide particles and the high-hardness alloy powder are chemically and metallurgically combined through high temperature; Taking the olive-shaped base 1 as an example, long spike abrasive heads made of different compositions and concentrations are used to polish hard wood floors, EVA (foam), and tire rubber, and data are collected, as shown in the following table: Table 1: Data table of long spike abrasive head polishing hard wood floor

[0020] Table 2: Data table of long spike abrasive head polishing foam

[0021] Table 3: long thorn grinding wheel tire rubber data table

[0022] In table 1 to table 3, the sharpness grade is 1 to 10, the higher the sharpness, the larger the value, the smoothness grade is 1 to 10, the higher the polishing smoothness, the larger the value, the service life grade is 1 to 10, the longer the service life, the larger the value; From table 1, it can be concluded that the hard wood floor is hard in texture, and the coarse particle and high concentration grinding head should be used for efficient grinding; From table 2, it can be concluded that the foam material is soft in texture, easy to grind, and less wear, and the fine particle and low concentration grinding head should be used for efficient grinding; From table 3, it can be concluded that the tire rubber is medium in hardness, and the medium particle and medium concentration grinding head can be used; From the comprehensive data of table 1 to table 3, it can be concluded that the lower the concentration, the higher the sharpness of the grinding head, the shorter the service life, the higher the concentration, the lower the sharpness of the grinding head, the longer the service life; When grinding different toughness materials, the grinding head with corresponding concentration can be selected; In summary, by setting the conical long thorn on the special-shaped base body, not only the grinding of the toughness material is realized, but also the special-shaped surface is suitable; In addition to the above embodiments, the present application also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the claims of the present application.

Claims

1. A long-stitch grinding head comprising a base body (1), characterized in that: The base body (1) is provided with a plurality of long spikes (2), the long spikes (2) are conical, the tip of the long spikes (2) is arranged away from the base body (1), and the extending direction of the long spikes (2) is perpendicular to the surface of the base body (1) where the root of the long spikes (2) is located.

2. A long-spur abrasive head according to claim 1, wherein: The shape of the base body (1) is special-shaped.

3. A long-spur abrasive head according to claim 2, wherein: The shape of the base body (1) is any one of T-shaped, olive-shaped, spherical, round head cylindrical, grinding disc-shaped, and round head cylindrical with British tooth.

4. A long-spur abrasive head according to claim 1 wherein: The material of the long spikes (2) is a combination of tungsten carbide hard alloy particles and high-hardness alloy powder.

5. A long-spur abrasive head according to claim 4, wherein: The particle size of the tungsten carbide hard alloy particles is 300-1000 mesh, and the particle size of the high-hardness alloy powder is 100-800 mesh.

6. A long-spur abrasive head according to claim 1 wherein: The material of the base body (1) is one of high-speed steel or 40Cr.

7. A long-spur abrasive head according to claim 1 wherein: The diameter of the conical long spikes (2) is 0.5-3 mm.

8. A long-spur abrasive head according to claim 7, wherein: The diameter of the conical long spikes (2) is any one of 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 2 mm, 2.5 mm, and 3 mm.

9. A long-spur bur production process characterized by: Specifically comprising the following steps: Step 1, preparing the base body (1); The base body (1) is machined by CNC; Step 2, preparing the raw material of the long spikes (2); Step 2.1, mixing the combination of tungsten carbide hard alloy particles and high-hardness alloy powder and an adhesive in a certain proportion by 3D, the mixing time is 1-5 hours, the high-hardness alloy powder is nickel-chromium alloy powder, and the adhesive is PR8000 resin powder; Among them, the concentration of tungsten carbide hard alloy particles in the combination is 10%-175%, the density of tungsten carbide hard alloy particles is 14.7 g / cm3, the density of high-hardness alloy powder is 7.9 g / cm3, and the adhesive accounts for 5%-25% of the total volume of the raw material; Step 2.2, heating the raw material; The mixed raw material is heated to melt the adhesive in the raw material, that is, to form a fluid; Step 3, 3D printing; The raw material after mixing and heating is applied to the base body (1) by a 3D printing device, and the raw material forms conical long spikes (2) on the base body (1); Step 4, vacuum brazing and shaping; The long spikes (2) printed on the base (1) are shaped by a vacuum brazing device. When the shaping temperature reaches 600°C, the adhesive evaporates. The shaping temperature is between 820°C and 1100°C, and the shaping vacuum is between 0.1 and 0.5 mbar to ; At this time, the tungsten carbide hard alloy particles and the high-hardness alloy powder are chemically combined by high temperature.

10. A long-spur bur head production process according to claim 9, characterized in that: In step 2.2, the heating temperature is 150-200°C.

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