Wide light spot laser cladding rotary cutter manufacturing process

Abstract

The invention belongs to the technical field of rotary cutter cladding, and particularly relates to a wide-light-spot laser cladding rotary cutter manufacturing process which comprises the following steps: step 1, blanking a steel plate, cutting a blank steel plate with the boundary dimension of 1540mm * 240mm * 18mm by a numerical control laser cutting machine, and then detecting by a vernier caliper and a steel tape; the blank steel plate is polished and cleaned, and edges and corners and slag generated after the steel plate is cut are removed; the blank steel plate is subjected to groove milling through a numerical control planer type milling machine, the pretreated blank steel plate is placed on a wide-light-spot laser cladding machine, alloy powder is added into a cladding groove of the blank steel plate, and the wide-light-spot laser cladding machine is started after operation is completed. Alloy powder in a blank steel plate cladding groove is cladded to a blank steel plate through laser cladding of a wide-light-spot laser cladding machine, finally, the alloy powder and the blank steel plate can be effectively fused together, a primary rotary cutter body is formed, and an alloy powder cladding area forms a cutting edge part.

Description

Technical Field

[0001] The invention belongs to the field of rotary cutter cladding technology, and specifically relates to a wide spot laser cladding rotary cutter manufacturing process. Background Art

[0002] The traditional manufacturing of rotary cutting tools has long faced numerous thorny challenges. From a process perspective, traditional hot-rolled steelmaking and heat treatment processes are complex and cumbersome. Not only do they require long, high-temperature furnace runs, consuming significant amounts of energy, but the cooling process also consumes vast quantities of water and produces significant amounts of waste gas, placing significant pressure on the environment. Statistics show that traditional woodworking tool production consumes a high level of energy per tool, resulting in significant energy waste.

[0003] In terms of product performance, woodworking tools manufactured using traditional techniques suffer from significant shortcomings. Their hardness, toughness, wear resistance, and impact resistance are far from ideal. In actual woodworking, tools wear rapidly and have short service lives. Frequent tool replacement not only increases production costs but also severely impacts productivity. Furthermore, traditional tools exhibit poor performance stability when working in complex environments or with unusual wood materials, prone to chipping and deformation, making them unable to meet the increasingly diverse market demands.

[0004] Faced with these difficulties, the rotary cutting tool manufacturing industry urgently needs a new technology and process that can not only improve tool performance and extend tool life, but also take into account environmental protection and energy saving, reduce production costs, and promote technological upgrading and sustainable development of the entire industry. Summary of the Invention

[0005] The purpose of the invention is to provide a wide spot laser cladding rotary cutting tool manufacturing process, aiming to solve the problem that the rotary cutting tool manufacturing industry urgently needs a new technology and process, which can not only improve the tool performance and extend the tool life, but also take into account environmental protection and energy saving, reduce production costs, and promote the entire industry to achieve technological upgrading and sustainable development.

[0006] To achieve the above-mentioned purpose, the invention provides the following technical solution: a manufacturing process of a wide spot laser cladding rotary cutter, comprising the following steps: Step 1: Cut the steel plate into blanks using a CNC laser cutting machine. The dimensions of each blank steel plate are 1540mm×240mm×18mm. Then use a vernier caliper and a steel tape measure to inspect the blanks. Next, the rough steel plate is polished and cleaned to remove the edges and corners and slag after cutting the steel plate, and the surface of the cut rough steel plate is checked to ensure that there are no pits or scratches with a depth greater than 0.1mm; Then, use a leveling machine to level and straighten the rough blank steel plate after grinding and cleaning. The flatness of the front side of the leveling tool body steel plate should not be greater than 0.15 mm, and the flatness of the back side of the leveling tool body steel plate should not be greater than 0.5 mm; Step 2: Milling the groove. Use a CNC gantry milling machine to mill the groove on the rough blank steel plate, and use multiple tools such as a straight ruler, depth vernier caliper, or R gauge in combination; Inspect the rough blank steel plate after milling the groove. The length of the milled groove is 61.0 mm, and its inner corner radian is 5 degrees; Step 3: Polishing the groove surface. Then use a angle grinder to polish the oxide layer within 20 mm on both sides and inside the cladding groove; Step 4: Cladding. Place the rough blank steel plate processed in the third step on a wide-spot laser cladding machine, add alloy powder into the cladding groove of the rough blank steel plate, and start the wide-spot laser cladding machine to cladding the alloy powder in the cladding groove of the rough blank steel plate onto the rough blank steel plate, thereby forming the primary rotary cutting tool body; Step 5: Laser cutting the tool face. Then use a CNC laser cutting machine to cut the primary rotary cutting tool body; Then, inspect the cut tool face. The inspection standard is: the width of the cut tool face is up to 189 mm; Step 6: Stress relief annealing. Place the primary rotary cutting tool body cut in the fifth step into a trolley-type resistance furnace for stress relief annealing to form the intermediate rotary cutting tool body; Then, calibrate and level the intermediate rotary cutting tool body. Use a leveling machine to straighten and level the front side of the tool body, and the flatness should not be greater than 0.10 mm; Step 7: Rough grinding the front side. After the intermediate rotary cutting tool body processed in the sixth step, rough grind it again. The front side of the rough ground tool body is to 17.5 ± 0.1 mm; Step 8: Rough milling the back side. After the seventh step is completed, at this time, use a gantry milling machine to rough mill the back side of the intermediate rotary cutting tool body to 16.5 ± 0.1 mm; Step 9: Milling the reference surface. After the rough milling of the back side process is completed, use a gantry milling machine to process the reference surface of the intermediate rotary cutting tool body, and machine the size of the milled reference surface of the intermediate rotary cutting tool body to 181 + 1 mm; Step 10: Milling the tool face. After the ninth step is completed, use a gantry milling machine to perform the tool face milling operation on the intermediate rotary cutting tool body, and cut the sizes of both sides of the tool body to 1500 ± 1 mm; Step 11: Wire cutting both sides. After the processing of the reference surface process is completed, use a CNC wire cutting machine to cut both sides of the intermediate rotary cutting tool body; After cutting, inspect it again. The inspection standard is: the sizes of both sides of the cut tool body are to 1500 ± 1 mm; After the above inspection is completed, perform rough milling of the inclined surface. Use a vertical knee-type milling machine to rough mill the inclined surface of the intermediate rotary cutter body to 22 ± 0.5° mm; After rough milling of the inclined surface is completed, perform leveling and straightening operations. Use a leveling machine to level and straighten the back of the cutter. The flatness of the back plane of the cutter body should not be greater than 0.08 mm; Then, inspect the straightened and leveled cutter body. The inspection standard is that the flatness should not be greater than 0.08 mm; Step 12: Laser cut U-shaped grooves. After the process operation in Step 11 is completed, use a CNC laser cutting machine to cut U-shaped grooves on the intermediate rotary cutter body at this time; After the U-shaped grooves are cut, use a vernier caliper to inspect the U-shaped grooves. The inspection standards are: the depth of the U-shaped groove is 95 mm, the width of the U-shaped groove is 24 mm, and the horizontal length between the centers of two adjacent U-shaped grooves is 180 mm; After the inspection is completed, use an angle grinder to polish and clean it, cleaning the edges, slag, and chamfers of the U-shaped grooves of the laser cutting; Then, perform leveling and straightening treatment again. Use a leveling machine to level and straighten the back plane of the cutter body, and the flatness should not be greater than 0.08 mm; Step 13: Drill and chamfer on the vertical surface. After Step 12 is completed, use a vertical drilling machine to drill holes on the vertical surface of the intermediate rotary cutter body; Step 14: Tap on the vertical surface. After Step 13 is completed, use a servo electric tapping machine to operate on the intermediate rotary cutter body. Tap 4 × M10 mm threads on the vertical surface of the intermediate rotary cutter body, with a depth of 35 mm; Step 15: Drill and chamfer on the plane. After Step 14 is completed, use a vertical drilling machine to drill holes in the intermediate rotary cutter body at this time, and then use a chamfering machine to chamfer; Step 16: Tap on the plane. After Step 15 is completed, use a servo electric tapping machine to tap the holes on the intermediate rotary cutter body in Step 15. The tapping standard is: 2 - M10; Step 17: Precision grind the front surface. After the plane tapping process of the intermediate rotary cutter body is completed, use a shear blade grinding machine to precision grind the front surface of the intermediate rotary cutter body, and precision grind the front surface to a thickness dimension of 16.2 ± 0.1 mm; Step 18: Precision grind the back surface. After Step 17 is completed, use a shear blade grinding machine to precision grind the back surface to a thickness dimension of 16 ± 0.1 mm; Step 19: Precision grind and edge. After Step 19 is completed, then use a shear blade grinding machine to perform edge treatment on the intermediate rotary cutter body, and precision grind the inclined surface of the intermediate rotary cutter body to 22 ± 0.5°; Step 20: Grind the edge. Use a grinding machine to grind off the tiny burrs on the edge; The twenty-first step: Inspect and detect the dimensions, surface roughness, geometric tolerances, cutting edge hardness, and appearance of the final rotary cutting tool body to determine whether the rotary cutting tool body meets the finished product standards; The twenty-second step: Package the qualified rotary cutting tool bodies and store them in the warehouse.

[0007] As an optimization of the manufacturing process of a wide-spot laser cladding rotary cutting tool, after the blank steel plate is milled with a straight ruler, the depth of the cladding groove is 2.5 - 4.0 mm, the width of the groove is 20 - 65 mm, and the R angle in the groove shall not be less than R5.

[0008] As an optimization of the manufacturing process of a wide-spot laser cladding rotary cutting tool, during the heat treatment, place the primary rotary cutting tool body on the storage rack and send it into the trolley-type resistance furnace. The furnace temperature is slowly raised to 480 °C within 2 h, held for 4 h, and then the power is cut off and it is naturally cooled to room temperature.

[0009] As an optimization of the manufacturing process of a wide-spot laser cladding rotary cutting tool, when measuring the milling reference surface, the size 181 of the milling reference surface must be measured starting from the outer edge of the back at the middle part of the blade.

[0010] Compared with the prior art, the beneficial effects of the invention are: First, use a numerical control laser cutting machine to cut the prepared steel plate into a blank steel plate with dimensions of 1540 mm × 240 mm × 18 mm. Then, use a numerical control gantry milling machine to mill grooves on each blank steel plate. After the grooving is completed, use a angle grinder to polish the oxide layer inside the cladding groove and within 20 mm on both sides of the groove, thus completing the pretreatment of the blank steel plate; Next, place the pretreated blank steel plate on a wide-spot laser cladding machine, and add alloy powder into the cladding groove of the blank steel plate. After the operation is completed, start the wide-spot laser cladding machine. Through the laser cladding of the wide-spot laser cladding machine, the alloy powder in the cladding groove of the blank steel plate is cladded onto the blank steel plate. Finally, the alloy powder can be effectively fused with the blank steel plate to form a primary rotary cutting tool body, and the alloy powder cladding area forms the cutting edge part; Then, use a numerical control laser cutting machine to cut the primary rotary cutting tool body, and after heat treatment, form an intermediate rotary cutting tool body; Finally, through processes such as rough grinding the front surface, straightening and leveling, rough milling the back surface, machining the reference surface, wire cutting the two side surfaces, vertical drilling, vertical tapping, laser cutting the U groove, plane drilling, plane tapping, rough milling the inclined surface, rough milling the back surface, fine grinding the front surface, fine grinding and edge sharpening, and chamfering the obtuse angle, the final rotary cutting tool body is prepared. Description of the Drawings

[0011] The accompanying drawings are used to provide a further understanding of the invention and form a part of the description. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation to the invention. In the accompanying drawings: Figure 1 is a schematic flow diagram of the invention; Figure 2 is a schematic diagram of the structure of the blank steel plate in the polishing groove surface step of the invention; Figure 3 is a schematic diagram of the distribution structure of the front and back of the blank steel plate of the invention; Figure 4 is a schematic diagram of the detailed structure in the laser cutting tool surface step of the invention; Figure 5 is a schematic diagram of the sectional elevation drilling and elevation tapping structure of the invention; Figure 6 is a schematic diagram of the laser cut U-groove structure of the invention; Figure 7 is a schematic diagram of the details in the fine grinding and edge sharpening step of the invention; Figure 8 is a schematic diagram of the details in the wire cutting both side surfaces step of the invention. Detailed implementation manners

[0012] Next, the technical solutions in the embodiments of the invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the invention.

[0013] Please refer to Figure 1-8 , the invention provides the following technical solutions: A manufacturing process for a wide-spot laser cladding rotary cutting tool, including the following steps: The first step: Steel plate blanking, cutting the blank steel plate by a numerical control laser cutting machine. The outer dimensions of each blank steel plate are 1540 mm × 240 mm × 18 mm, and then it is detected by a vernier caliper and a steel tape measure; Then, the blank steel plate is polished and cleaned to remove the edges and slag after cutting the steel plate, and it is checked that the surface of the cut blank steel plate shall not have pits and scratches with a depth greater than 0.1 mm; Then, a leveling machine is used to level and straighten the polished and cleaned blank steel plate. The front surface of the leveling tool body steel plate is leveled to a flatness not greater than 0.15 mm, and the back surface of the leveling tool body steel plate is leveled to a flatness not greater than 0.5 mm; The second step: Grooving, grooving the blank steel plate by a numerical control gantry milling machine, and using multiple tools such as a straight ruler, a depth vernier caliper or an R gauge in cooperation; Inspect the rough blank steel plate after milling the groove. The length of the milled groove is 61.0 mm, and the inner corner radian is 5 degrees; Step 3: Polish the groove surface, and then use an angle grinder to polish the oxide layer within 20 mm on both sides and inside the cladding groove; Step 4: Cladding. Place the rough blank steel plate processed in Step 3 on a wide-spot laser cladding machine, add alloy powder into the cladding groove of the rough blank steel plate, start the wide-spot laser cladding machine to cladding the alloy powder in the cladding groove of the rough blank steel plate onto the rough blank steel plate, thereby forming the primary rotary cutting tool body; Step 5: Laser cut the tool face. Then use a CNC laser cutting machine to cut the primary rotary cutting tool body; Then, inspect the cut tool face. Inspection standard: the width of the cut tool face is up to 189 mm; Step 6: Stress relief annealing. Place the primary rotary cutting tool body cut in Step 5 into a trolley-type resistance furnace for stress relief annealing to form the intermediate rotary cutting tool body; Then, straighten and level the intermediate rotary cutting tool body. Use a leveling machine to straighten and level the front plane of the tool body, and the flatness of the front plane of the tool body is not greater than 0.10 mm; Step 7: Rough grind the front face. After the intermediate rotary cutting tool body processed in Step 6, rough grind it again. Rough grind the front face of the tool body to 17.5 ± 0.1 mm; Step 8: Rough mill the back face. After Step 7 is completed, at this time, use a gantry milling machine to rough mill the back face of the intermediate rotary cutting tool body to 16.5 ± 0.1 mm; Step 9: Mill the reference plane. After the rough milling of the back face process is completed, use a gantry milling machine to process the reference plane of the intermediate rotary cutting tool body, and machine the size of the milled reference plane of the intermediate rotary cutting tool body to 181 + 1 mm; Step 10: Mill the tool face. After Step 9 is completed, use a gantry milling machine to perform the tool face milling operation on the intermediate rotary cutting tool body, and cut the sizes of both sides of the tool body to 1500 ± 1 mm; Step 11: Wire cut both sides. After the processing of the reference plane process is completed, use a CNC wire cutting machine to cut and process both sides of the intermediate rotary cutting tool body; After cutting, inspect it again. Inspection standard: the sizes of both sides of the cut tool body are 1500 ± 1 mm; After the above inspection is completed, perform the rough milling of the inclined plane operation. Use a vertical lifting table milling machine to rough mill the inclined plane of the intermediate rotary cutting tool body to 22 ± 0.5° mm; After the rough milling of the inclined plane is completed, perform the straightening and leveling operation. Use a leveling machine to straighten and level the back of the tool, and the flatness of the back plane of the straightened and leveled tool body is not greater than 0.08 mm; Then, inspect the straightened and leveled tool body. Inspection standard: the flatness is not greater than 0.08 mm; Step 12: Laser cut the U-shaped groove. After the process operation in Step 11 is completed, at this time, use a numerical control laser cutting machine to open a U-shaped groove on the body of the intermediate rotary cutting tool. After the U-shaped groove is opened, use a vernier caliper to inspect the U-shaped groove. The inspection standards are as follows: the depth of the U-shaped groove is 95 mm, the width of the U-shaped groove is 24 mm, and the horizontal length between the centers of two adjacent U-shaped grooves is 180 mm. After the inspection is completed, use a grinding wheel to polish and clean it, cleaning the edges, slag, and chamfer of the U-shaped groove of the laser cutting. Then, perform leveling and straightening treatment. Use a leveling machine to straighten and level the back plane of the tool body with a flatness not greater than 0.08 mm. Step 13: Drill and chamfer on the vertical surface. After Step 12 is completed, use a vertical drilling machine to drill holes on the vertical surface of the body of the intermediate rotary cutting tool. Step 14: Tap on the vertical surface. After Step 13 is completed, use a servo electric tapping machine to operate on the body of the intermediate rotary cutting tool, and tap 4×M10 mm threads on the vertical surface of the body of the intermediate rotary cutting tool with a depth of 35 mm. Step 15: Drill and chamfer on the plane. After Step 14 is completed, at this time, use a vertical drilling machine to drill holes on the body of the intermediate rotary cutting tool, and then use a chamfering machine to chamfer. Step 16: Tap on the plane. After Step 15 is completed, use a servo electric tapping machine to tap the holes on the body of the intermediate rotary cutting tool in Step 15. The tapping standard is: 2-M10. Step 17: Precision grind the front surface. After the plane tapping process of the body of the intermediate rotary cutting tool is completed, use a shear blade grinding machine to precision grind the front surface of the body of the intermediate rotary cutting tool until the thickness dimension reaches 16.2±0.1 mm. Step 18: Precision grind the back surface. After Step 17 is completed, use a shear blade grinding machine to precision grind the back surface thickness dimension to 16±0.1 mm. Step 19: Precision grind and edge. After Step 19 is completed, then use a shear blade grinding machine to perform edge treatment on the body of the intermediate rotary cutting tool, and precision grind the inclined surface of the body of the intermediate rotary cutting tool to 22±0.5°. Step 20: Grind the edge. Use a edge grinding machine to grind off the tiny burrs on the edge. Step 21: Inspection. Detect the dimensions, surface roughness, form and position tolerances, edge hardness, and appearance of the final rotary cutting tool body to determine whether the rotary cutting tool body meets the finished product standards. Step 22: Package and store the qualified rotary cutting tool body in the warehouse. Inspection. Detect the dimensions, surface roughness, form and position tolerances, edge hardness, and appearance of the final rotary cutting tool body to determine whether the rotary cutting tool body meets the finished product standards. The details are as follows: Check the dimensional tolerance. The inspection items are: 1. Total length L = 1500 ± 2; 2. Width W = 180; 3. Thickness T=16±0.30; 4. Wedge angle β = 22° ± 1°.

[0014] Check the surface roughness and shape and position tolerance of the blade. The inspection items are: 1. Surface roughness (1) The surface roughness of the blade body shall not be less than Ra0.4.

[0015] (2) The roughness of the front, grinding and back surfaces of the blade shall not be less than Ra1.6.

[0016] (3) The surface roughness of other parts shall not be less than Ra6.3.

[0017] 2. Geometric tolerance (1) Blade straightness: Place the blade on a flat plate and measure the maximum gap with a feeler gauge.

[0018] (2) Straightness of the front face of the blade Place the front face of the blade on a flat plate and measure the maximum gap with a feeler gauge.

[0019] (3) Check the position and size of each hole.

[0020] Check the blade hardness HRC59~62. Testing method: Use Rockwell hardness tester to measure at 50mm from both ends of the blade and three places in the middle.

[0021] The cladding groove depth after the rough steel plate is milled with a ruler is 2.5-4.0mm, the groove width is 20-65mm, and the R angle in the groove shall not be less than R5; During the heat treatment, the primary rotary cutter blade is placed on a rack and placed in a trolley-type resistance furnace. The furnace temperature is slowly raised to 480° C. within 2 hours, kept at this temperature for 4 hours, and then naturally cooled to room temperature after power is turned off. When measuring the milling reference surface in the milling reference surface, the milling reference surface dimension 181 must be measured in the middle of the insert from the outer edge of the back.

[0022] First, a CNC laser cutter precisely cuts the stock steel into blanks measuring 1540 mm x 240 mm x 18 mm. A CNC gantry milling machine then mills the desired grooves into each blank. After milling, an angle grinder is used to meticulously polish the interior of the cladding groove and the area within 20 mm on either side to completely remove the oxide layer. This completes the pretreatment of the blank steel.

[0023] Next, place the preprocessed blank steel plate properly on the wide-spot laser cladding machine, and evenly add the alloy powder into the cladding groove of the blank steel plate. After everything is ready, start the wide-spot laser cladding machine and use its wide-spot laser cladding technology to precisely cladding the alloy powder in the cladding groove onto the blank steel plate, ensuring efficient and firm fusion between the alloy powder and the blank steel plate, thereby forming the primary rotary cutting tool body, where the area of alloy powder cladding will constitute the blade part.

[0024] Subsequently, use a numerical control laser cutting machine to precisely cut the primary rotary cutting tool body to meet the design size requirements. After cutting, perform a heat treatment process to enhance the hardness and toughness of the tool body, thereby forming the intermediate rotary cutting tool body.

[0025] Finally, perform a series of fine machining on the intermediate rotary cutting tool body: including rough grinding the front to ensure a flat surface, straightening and leveling to ensure the straightness of the tool body, rough milling the back to remove excess material, machining the reference surface to provide a positioning reference for subsequent machining, wire cutting both sides to achieve precise dimension control, vertical drilling and vertical tapping to meet assembly requirements, laser cutting U-grooves to adapt to specific application scenarios, flat drilling and flat tapping to increase connection points, rough milling the inclined surface and rough milling the back to further shape, fine grinding the front to improve the surface finish, fine grinding and edge sharpening to form a sharp blade, and chamfering to increase safety and durability. After this series of complex and delicate technological processes, the rotary cutting tool body meeting high standards is finally prepared.

[0026] Finally, it should be noted that the above are only the preferred embodiments of the invention and are not used to limit the invention. Although the invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the invention shall be included within the protection scope of the invention.

Claims

1. A manufacturing process for a wide-spot laser cladding rotary cutting tool, characterized in that, The following steps are involved: Step 1: Cut the steel plate into blanks using a CNC laser cutting machine. The dimensions of each blank steel plate are 1540mm×240mm×18mm. Then use a vernier caliper and a steel tape measure to inspect the blanks. Next, the rough steel plate is polished and cleaned to remove the edges and corners and slag after cutting the steel plate, and the surface of the cut rough steel plate is checked to ensure that there are no pits or scratches with a depth greater than 0.1mm; Then, use a leveling machine to level and straighten the rough steel plate after grinding and cleaning, level the front of the blade steel plate to a flatness of no more than 0.15mm, and level the back of the blade steel plate to a flatness of no more than 0.5mm; Step 2: Milling grooves, use CNC gantry milling machine to mill grooves on the blank steel plate, and use a ruler, depth vernier or R gauge to match the tool; The blank steel plate after milling was inspected and the length of the milling groove was 61.0 mm and the internal angle was 5 degrees. Step 3: Polish the groove surface, and then use an angle grinder to grind the oxide layer within the cladding groove and within 20mm on both sides of the groove; Step 4: Cladding: Place the blank steel plate processed in the third step on the wide spot laser cladding machine, add the alloy powder into the cladding groove of the blank steel plate, start the wide spot laser cladding machine to clad the alloy powder in the cladding groove of the blank steel plate onto the blank steel plate, thereby forming the primary rotary cutter body; Step 5: Laser cutting the blade surface, and then use the CNC laser cutting machine to cut the primary rotary cutter blade body; Then, the cutting blade surface is inspected, and the inspection standard is: the cutting blade width is up to 189mm; Step 6: Stress relief annealing: Place the primary rotary cutter body cut in the fifth step into a trolley-type resistance furnace for stress relief annealing to form an intermediate rotary cutter body; Then, the intermediate rotary cutter body is calibrated and leveled, and the flatness of the front surface of the cutter body is adjusted to no more than 0.10mm by a leveling machine; Step 7: Roughly grind the front side of the intermediate rotary cutter after the sixth step. Roughly grind the front side of the cutter to 17.5±0.1mm. Step 8: Rough milling of the back. After step 7, the back of the intermediate rotary cutter body needs to be rough milled to 16.5±0.1mm using a gantry milling machine. Step 9: After the milling reference surface and rough milling back process are completed, the gantry milling machine is used to process the reference surface of the intermediate rotary cutter body, and the milling reference surface size of the intermediate rotary cutter body is processed to 181+1mm; Step 10: Milling surface. After completing step 9, use the gantry milling machine to perform milling operation on the intermediate rotary cutter body, and cut the two side surfaces of the cutter body to 1500±1mm; Step 11: After the wire cutting of both sides and the processing of the reference surface are completed, the CNC wire cutting machine is used to cut the two sides of the intermediate rotary cutter body; After cutting, it is inspected again. The inspection standard is: the size of both sides of the cutting blade body is cut to 1500±1mm; After the above inspection is completed, the rough milling operation is carried out. The vertical lifting table milling machine is used to rough mill the bevel of the intermediate rotary cutter body to 22±0.5°mm; After rough milling the inclined plane, perform the leveling and straightening operations. Use a leveling machine to level and straighten the back of the tool. The flatness of the back plane of the tool body after leveling and straightening should not be greater than 0.08 mm. Then, inspect the tool body after straightening and leveling. The inspection standard for flatness should not be greater than 0.08 mm. The twelfth step: Laser cut the U-shaped groove. After the eleventh step of the process operation is completed, use a numerical control laser cutting machine to cut a U-shaped groove on the intermediate rotary cutting tool body at this time. After the U-shaped groove is cut, use a vernier caliper to inspect the U-shaped groove. The inspection standards are as follows: the depth of the U-shaped groove is 95 mm, the width of the U-shaped groove is 24 mm, and the horizontal length between the centers of two adjacent U-shaped grooves is 180 mm. After the inspection is completed, use a grinding wheel to polish and clean it, cleaning the edges, slag, and chamfer of the U-shaped groove of the laser cutting. Then, perform the leveling and straightening process again. Use a leveling machine to level and straighten the back plane of the tool body, and the flatness should not be greater than 0.08 mm. The thirteenth step: Drill and chamfer on the vertical surface. After the twelfth step is completed, drill on the vertical surface of the intermediate rotary cutting tool body through a vertical drilling machine. The fourteenth step: Tap on the vertical surface. After the thirteenth step is completed, use a servo electric tapping machine to operate on the intermediate rotary cutting tool body, and tap 4×M10 mm threads on the vertical surface of the intermediate rotary cutting tool body, with a depth of 35 mm. The fifteenth step: Drill and chamfer on the plane. After the fourteenth step is completed, use a vertical drilling machine to drill on the intermediate rotary cutting tool body at this time, and then use a chamfering machine to chamfer. The sixteenth step: Tap on the plane. After the fifteenth step is completed, use a servo electric tapping machine to tap the holes on the intermediate rotary cutting tool body in the fifteenth step. The tapping standard is: 2-M10. The seventeenth step: Precision grind the front surface. After the plane tapping process of the intermediate rotary cutting tool body is completed, use a shear blade grinding machine to precision grind the front surface of the intermediate rotary cutting tool body, and precision grind the front surface to a thickness dimension of 16.2±0.1 mm. The eighteenth step: Precision grind the back surface. After the seventeenth step is completed, use a shear blade grinding machine to precision grind the back surface to a thickness dimension of 16±0.1 mm. The nineteenth step: Precision grind and edge. After the nineteenth step is completed, then use a shear blade grinding machine to perform edge treatment on the intermediate rotary cutting tool body, and precision grind the inclined plane of the intermediate rotary cutting tool body to 22±0.5°. The twentieth step: Grind the edge. Use a edge grinding machine to grind off the tiny burrs on the edge. The twenty-first step: Inspection. Detect the dimensions, surface roughness, form and position tolerances, edge hardness, and appearance of the final rotary cutting tool body to determine whether the rotary cutting tool body meets the finished product standards. The twenty-second step: Package the qualified rotary cutting tool body and store it in the warehouse.

2. The manufacturing process of a wide-spot laser cladding rotary cutting tool according to claim 1, characterized in that: The depth of the cladding groove after milling the groove of the blank steel plate straightedge is 2.5 - 4.0 mm, the width of the groove is 20 - 65 mm, and the R angle in the groove shall not be less than R5.

3. A manufacturing process for a wide-spot laser cladding rotary cutting tool according to claim 1, characterized in that: During the heat treatment, place the primary rotary cutting tool body on a storage rack and send it into a trolley-type resistance furnace. The furnace temperature slowly rises to 480 °C within 2 h, keeps warm for 4 h, and then cuts off the power and cools naturally to room temperature.

4. A manufacturing process for a wide-spot laser cladding rotary cutting tool according to claim 1, characterized in that: When measuring the milling reference surface in the milling reference surface, the milling reference surface dimension 181 must be measured starting from the outer edge line of the back in the middle part of the blade.

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