Manufacturing method of high-precision stamping die

Abstract

The invention discloses a manufacturing method of a high-precision stamping die, and relates to the technical field of die manufacturing. According to the manufacturing method of the high-precision stamping die, a shell is arranged at the top of a base, a first fixing plate is arranged at the top of the shell, and lifting equipment is arranged at the top of the first fixing plate; second fixing plates are fixedly connected to the two sides of the lifting equipment, first pushing blocks are fixedly connected to the bottoms of the second fixing plates, first hydraulic blocks are movably connected to the bottoms of the first pushing blocks, the interiors of the first hydraulic blocks communicate with the interiors of the second hydraulic blocks through first hoses, and the outer sides of the second hydraulic blocks are fixedly connected with the first fixing plates through third fixing plates. The inner side of the second hydraulic block is movably connected with a second push block, the inner side of the second push block is fixedly connected with a positioning plate, and the outer side of the first hydraulic block is movably connected with an L-shaped pressing plate through a transmission piece. According to the manufacturing method of the high-precision stamping die, by improving the component proportion and the subsequent manufacturing process, the strength of the die is improved, and the working efficiency of die manufacturing equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of mold manufacturing technology, specifically a method for manufacturing a high-precision stamping mold. Background Technology

[0002] Currently, many electronic products, automobiles, and other parts are produced using molds. As a crucial element in the machining field, molds have increasingly become the preferred choice for product and parts manufacturing due to their cost advantages. Simply put, a mold is a tool used to shape products or parts. Depending on the product being shaped, molds are divided into metal molds and non-metal molds. Metal molds are generally cast, and then the cast metal mold undergoes surface treatment to meet its performance requirements.

[0003] Chinese patent CN104004966B, authorized and published on April 20, 2016, discloses a method for manufacturing stamping dies, including casting a metal die blank, heat treatment of the metal die blank including annealing and quenching, and a combination of rough milling, fine milling, and grinding to produce a more precise die. Furthermore, nickel plating results in a uniform, corrosion-resistant, and wear-resistant coating with a smooth surface that is less prone to cracking, meeting the requirements of metal dies and possessing broad market prospects. However, the aforementioned application document shows certain deficiencies in the die's strength and manufacturing method, necessitating improvements in the content of various metals used in casting to avoid insufficient strength in the metal die during subsequent processing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method for manufacturing high-precision stamping dies, solving the problems mentioned in the background section. To achieve the above objectives, this invention is implemented through the following technical solution: a method for manufacturing high-precision stamping dies, wherein the materials used to manufacture the die have the following components: C: 0.45-0.55%; Mn: 0.60-0.80%; Cr: 4.8-5.2%; Mo: 1.20-1.50%; V: 1.80-2.20%; Si: 0.90-1.10%; Ni: 0.10-0.30%; W: 2.50-3.50%; The remainder consists of Fe and unavoidable impurities, and its manufacturing method includes the following steps: S1. The materials of the above components are vacuum induction melted according to the above proportions, and the melting temperature is 1480-1550°C. S2. The above-smelted material is poured into a mold at a pouring temperature of 1380-1420°C. S3. Use stepped isothermal annealing. First, cool to 750-780°C at a rate of ≤50°C / hour and hold for 4-6 hours; then cool to below 500°C and air cool. S4. Forge the cast mold blank, after stress relief annealing, rough mill the reference surface, and then perform secondary stress annealing at a temperature of 600-650°C for 3-5 hours. S5. Then, the mold blank is quenched using high-temperature quenching at a temperature of 1040-1080°C, and then graded quenching is performed in a salt bath at 50-500°C. After holding for 10-15 minutes, it is air-cooled. S6. Immediately subject the quenched metal mold blank to deep cryogenic treatment, cooling the mold to -80°C to -120°C and holding it at that temperature for 2-3 hours. S7. Precision milling of the forming surface of the mold blank; S8. Use a grinding wheel to finely grind the mold blank to make the surface smooth; S9. Then, the mold blank after S8 is subjected to three high-temperature temperings at a temperature of 520-560°C, with each tempering lasting for 2 hours. After each tempering, it needs to be cooled to room temperature before the next tempering. S10. Add a vapor deposition coating to the forming surface of the tempered mold blank. Use physical vapor deposition (PVD) process to deposit a coating on the forming surface with a coating thickness of 3-5 μm.

[0005] Preferably, the base has a housing on its top, a fixing plate on its top, and a lifting device on its top. The lifting device is fixedly connected to two fixed plates on both sides. A push block is fixedly connected to the bottom of the fixed plates. A hydraulic block is movably connected to the bottom of the push block. The bottom of the hydraulic block is fixedly connected to the top of the fixed plates. The outer side of the hydraulic block is fixedly connected to one end of a hose. The other end of the hose is fixedly connected to the top of the hydraulic block. The outer side of the hydraulic block is fixedly connected to the front and rear sides of the fixed plates via a fixed plate. A push block is movably connected to the inner side of the hydraulic block. A positioning plate is fixedly connected to the inner side of the push block. The outer side of the hydraulic block is movably connected to an L-shaped clamping plate via a transmission component. The positioning plate and L-shaped clamping plate are configured so that when the equipment starts working, the electric push rod drives the upper and lower covers of the casting equipment to close, causing the positioning plates on both sides to move inward, thus fixing the front and rear sides of the casting equipment. Simultaneously, the L-shaped clamping plate moves downward, making the upper and lower covers close more tightly, thereby preventing molten iron from overflowing during casting and protecting the operator's safety.

[0006] Preferably, the transmission component includes a second flexible hose, a slide rail, a third hydraulic block, and a third pusher block. The outer side of the first hydraulic block is fixedly connected to one end of the second flexible hose, and the other end of the second flexible hose is fixedly connected to the top of the third hydraulic block. A slide rail is fixedly connected to the rear side of the positioning plate, and the outer side of the slide rail is fixedly connected to the inner side of the third hydraulic block. A third pusher block is movably connected to the bottom of the third hydraulic block, and the bottom of the third pusher block is fixedly connected to the L-shaped clamping plate. The outer side of the L-shaped clamping plate is slidably connected to the slide rail.

[0007] Preferably, an electric push rod is fixedly connected to the top of the lifting device, a casting device is fixedly connected to the bottom of the electric push rod, a casting port is fixedly connected to the top of the casting device, an automatic unloading device is movably connected to the bottom of the casting device, heat insulation and anti-sticking components are movably connected to both sides of the casting port, and a waste heat utilization component is fixedly connected inside the heat insulation and anti-sticking components.

[0008] Preferably, the number of hydraulic blocks one is four, and every two hydraulic blocks one form a group; the number of hoses one is four; the number of fixing plates three is two; the number of hydraulic blocks two is four; the number of push blocks two is four; the number of positioning plates is two; the number of hoses two is two; the number of slide rails is two; the number of hydraulic blocks three is two; the number of push blocks three is four, and every two push blocks three form a group; and the number of L-shaped clamping plates is two.

[0009] Preferably, the heat insulation and anti-sticking assembly includes a flexible hose (3), a hydraulic block (4), a pusher block (4), a spring, and a heat insulation cover. The outer side of the hydraulic block is fixedly connected to one end of the flexible hose (3), and the other end of the flexible hose (3) is fixedly connected to the rear side of the hydraulic block (4). The bottom of the hydraulic block (4) is fixedly connected to the top of the lifting device. A pusher block (4) is movably connected to the front side of the hydraulic block (4), and a spring is fixedly connected between the pusher block (4) and the hydraulic block (4). A heat insulation cover is fixedly connected to the front side of the pusher block (4). By setting up the heat insulation and anti-sticking assembly, when the electric push rod drives the casting equipment to close, the heat insulation covers on both the front and rear sides close inward, thereby enclosing the casting gate with the heat insulation cover. This prevents the molten iron from rapidly cooling and sticking to the inner wall of the casting gate during the casting process, thus improving equipment processing efficiency and reducing the need for manual cleaning later.

[0010] Preferably, the number of hoses three is two, the number of hydraulic blocks four is two, the number of push blocks four is two, the number of springs is four, and the number of insulation covers is two.

[0011] Preferably, the inner wall surface of the heat insulation cover is tangent to the outer side of the casting port.

[0012] Preferably, the waste heat utilization component includes a heat exchange medium inlet, a heat exchange medium outlet, a heat-conducting pad, a heat exchange circular tube, and a connecting pipe. The heat exchange medium inlet and outlet are fixedly connected to the outer side of the insulation cover. Multiple heat-conducting pads are fixedly connected to the inner wall surface of the insulation cover. Multiple heat exchange circular tubes are fixedly connected to the inside of the insulation cover, and connecting pipes are fixedly connected between the heat exchange circular tubes. By configuring the waste heat utilization component, when the insulation cover is closed inwards, the heat exchange medium enters the heat exchange circular tube from the heat exchange medium inlet and flows out from the heat exchange medium outlet. The heat-conducting pad transfers the waste heat from the casting port to the heat exchange circular tube, raising the temperature of the heat exchange medium and thus transferring heat, utilizing the waste heat, and saving resources.

[0013] Preferably, the number of heat exchange medium inlets is two, the number of heat exchange medium outlets is two, the number of heat exchange circular tubes is four, and the number of connecting tubes is three.

[0014] This invention provides a method for manufacturing high-precision stamping dies. It has the following beneficial effects: (1) The manufacturing method of the high-precision stamping die: when the equipment is working, the electric push rod is started, and in conjunction with push block one, hydraulic block one, hose one, hydraulic block two, push block two, positioning plate, hose two, hydraulic block three, and push block three, the L-shaped clamping plate moves downward, so that the upper and lower covers of the casting equipment are closed more tightly, thereby avoiding safety accidents caused by poor sealing and protecting the safety of operators.

[0015] (2) The manufacturing method of the high-precision stamping die, when the internal pressure of the hydraulic block increases, the heating cover on both sides automatically closes in conjunction with the hose, hydraulic block, push block, spring and heat insulation cover, thereby avoiding the phenomenon of rapid cooling of the molten iron at the casting port and sticking to the casting port, thus improving the processing efficiency of the equipment.

[0016] (3) The manufacturing method of the high-precision stamping die is that when the heat insulation cover is automatically closed, the heat exchange medium is introduced from the heat exchange medium inlet, so that the heat exchange medium absorbs the residual heat outside the casting port through the heat exchange round pipe, the connecting pipe and the heat-conducting pad, thereby making use of the residual heat and saving resources. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall internal structure of the present invention; Figure 3 This is a schematic diagram of some of the components of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the thermal insulation and anti-sticking component structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the waste heat utilization component structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the waste heat utilization component of the present invention.

[0018] In the picture: 100. Base; 200. Outer shell; 300. Fixing plate 1; 400. Lifting device; 500. Electric push rod; 600. Casting equipment; 700. Casting gate; 800. Automatic unloading device; 901. Fixed plate two; 902. Push block one; 903. Hydraulic block one; 904. Hoses one; 905. Fixed plate three; 906. Hydraulic block two; 907. Push block two; 908. Positioning plate; 909. Hoses two; 910. Slide rail; 911. Hydraulic block three; 912. Push block three; 913. L-shaped clamping plate; 1000. Thermal insulation and anti-sticking component; 1001. Hoses III; 1002. Hydraulic block IV; 1003. Push block IV; 1004. Spring; 1005. Thermal insulation cover; 1100 Waste heat recovery assembly; 1101 Heat exchange medium inlet; 1102 Heat exchange medium outlet; 1103 Thermal pad; 1104 Heat exchange circular tube; 1105 Connecting pipe. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Example 1, please refer to Figures 1-4 A method for manufacturing a high-precision stamping die, wherein the material composition for manufacturing the die is as follows: C: 0.45-0.55%; Mn: 0.60-0.80%; Cr: 4.8-5.2%; Mo: 1.20-1.50%; V: 1.80-2.20%; Si: 0.90-1.10%; Ni: 0.10-0.30%; W: 2.50-3.50%; The remainder consists of Fe and unavoidable impurities, and its manufacturing method includes the following steps: S1. The materials of the above components are vacuum induction melted according to the above proportions, and the melting temperature is 1480-1550°C. S2. The above-smelted material is poured into a mold at a pouring temperature of 1380-1420°C. S3. Use stepped isothermal annealing. First, cool to 750-780°C at a rate of ≤50°C / hour and hold for 4-6 hours; then cool to below 500°C and air cool. S4. Forge the cast mold blank, after stress relief annealing, rough mill the reference surface, and then perform secondary stress annealing at a temperature of 600-650°C for 3-5 hours. S5. Then, the mold blank is quenched using high-temperature quenching at a temperature of 1040-1080°C, and then graded quenching is performed in a salt bath at 50-500°C. After holding for 10-15 minutes, it is air-cooled. S6. Immediately subject the quenched metal mold blank to deep cryogenic treatment, cooling the mold to -80°C to -120°C and holding it at that temperature for 2-3 hours. S7. Precision milling of the forming surface of the mold blank; S8. Use a grinding wheel to finely grind the mold blank to make the surface smooth; S9. Then, the mold blank after S8 is subjected to three high-temperature temperings at a temperature of 520-560°C, with each tempering lasting for 2 hours. After each tempering, it needs to be cooled to room temperature before the next tempering. S10. Add a vapor deposition coating to the forming surface of the tempered mold blank. Use physical vapor deposition (PVD) process to deposit a coating on the forming surface with a coating thickness of 3-5 μm. The base 100 has an outer shell 200 on its top. The outer shell 200 has a fixing plate 300 on its top. The fixing plate 300 has a lifting device 400 on its top. The lifting device 400 has an electric push rod 500 fixedly connected to its top. The electric push rod 500 has a casting device 600 fixedly connected to its bottom. The casting device 600 has a pouring port 700 fixedly connected to its top. The pouring port 700 allows molten iron to be poured into the casting device 600. The casting device 600 has an automatic unloading device 800 movably connected to its bottom. The automatic unloading device 800 allows the mold inside the casting device 600 to be ejected after cooling and forming. The pouring port 700 has heat insulation and anti-sticking components 1000 movably connected to both sides. The heat insulation and anti-sticking components 1000 have a waste heat utilization component 1100 fixedly connected inside. Fixed plates 901 are fixedly connected to both sides of the lifting device 400. The fixed plates 901 are designed to move with the lifting device 400. A push block 902 is fixedly connected to the bottom of the fixed plate 901. A hydraulic block 903 is movably connected to the bottom of the push block 902. The bottom of the hydraulic block 903 is fixedly connected to the top of the fixed plate 300. The outer side of the hydraulic block 903 is fixedly connected to one end of a hose 904. The other end is fixedly connected to the top of hydraulic block 2 906. A hose 1 904 is provided so that the inside of hydraulic block 1 903 communicates with the inside of hydraulic block 2 906. The outside of hydraulic block 2 906 is fixedly connected to the front and rear sides of fixed plate 1 300 through fixed plate 3 905. Push block 2 907 is movably connected to the inside of hydraulic block 2 906. Positioning plate 908 is fixedly connected to the inside of push block 2 907. The outside of hydraulic block 1 903 is movably connected to L-shaped clamping plate 913 through a transmission component. The transmission components include a second hose 909, a slide rail 910, a third hydraulic block 911, and a third push block 912. The outer side of the first hydraulic block 903 is fixedly connected to one end of the second hose 909, and the other end of the second hose 909 is fixedly connected to the top of the third hydraulic block 911. The second hose 909 is installed so that the interior of the left side of the first hydraulic block 903 communicates with the interior of the third hydraulic block 911. The rear side of the positioning plate 908 is fixedly connected to the slide rail 910. The slide rail 910 is installed so that the L-shaped pressing plate 913 moves along the direction of the slide rail 910. The outer side of the slide rail 910 is fixedly connected to the inner side of the third hydraulic block 911. The bottom of the third hydraulic block 911 is movably connected to the third push block 912. The bottom of the third push block 912 is fixedly connected to the L-shaped pressing plate 913, and the outer side of the L-shaped pressing plate 913 is slidably connected to the slide rail 910. There are four hydraulic blocks 903, with two hydraulic blocks 903 forming a group; four hoses 904; two fixing plates 905; four hydraulic blocks 906; four push blocks 907; two positioning plates 908; two hoses 909; two slide rails 910; two hydraulic blocks 911; four push blocks 912, with two push blocks 912 forming a group; and two L-shaped clamping plates 913. The positioning plate 908 and L-shaped clamping plate 913 are configured so that when the equipment starts working, the electric push rod 500 drives the upper and lower covers of the casting equipment 600 to close, causing the positioning plates 908 on both the front and rear sides to move inward, fixing the front and rear sides of the casting equipment 600 with the positioning plates 908. At the same time, the L-shaped clamping plate 913 moves downward, making the upper and lower covers close more tightly, thereby preventing molten iron from overflowing during the casting process and protecting the safety of the operators.

[0021] When in use, when the equipment starts working, the electric push rod 500 is activated, causing the lifting device 400 to move downwards, which in turn moves the upper cover of the casting equipment 600 downwards. This causes the upper cover to move the fixing plate 901 downwards, which in turn moves the push block 902 downwards. This increases the internal pressure of the hydraulic block 903, which is then transmitted through the hose 904 to the hydraulic block 906. This increases the internal pressure of the hydraulic block 906, causing the push block 907 to push outwards. This causes the positioning plate 908 to move inwards, fixing the upper and lower covers of the casting equipment 600 on both sides. Excess pressure inside the right hydraulic block 903 is transmitted through the hose 909 to the hydraulic block 911, increasing the internal pressure of the hydraulic block 911. This causes the push block 912 to push downwards, and the L-shaped clamping plate 913 moves downwards along with the push block 912, making the upper and lower covers close more tightly. This prevents molten iron from overflowing during the casting process and protects the safety of the operators.

[0022] Example 2, please refer to Figures 1-6Based on Embodiment 1, the thermal insulation and anti-sticking component 1000 includes a flexible hose 1001, a hydraulic block 1002, a push block 1003, a spring 1004, and a thermal insulation cover 1005. The outer side of the hydraulic block 1003 is fixedly connected to one end of the flexible hose 1001, and the other end of the flexible hose 1001 is fixedly connected to the rear side of the hydraulic block 1002. The flexible hose 1001 is configured to allow communication between the interior of the left hydraulic block 1003 and the interior of the hydraulic block 1002. The bottom of hydraulic block 41002 is fixedly connected to the top of lifting device 400. Push block 41003 is movably connected to the front side of hydraulic block 41002. Spring 1004 is fixedly connected between push block 41003 and hydraulic block 41002. Spring 1004 is provided so that push block 41003 can automatically reset. Heat insulation cover 1005 is fixedly connected to the front side of push block 41003. The inner wall surface of heat insulation cover 1005 is tangent to the outer side of casting port 700. There are two hoses 1001, two hydraulic blocks 1002, two push blocks 1003, four springs 1004, and two insulation covers 1005. The heat insulation and anti-sticking component 1000 is set up so that when the electric push rod 500 drives the casting equipment 600 to close, the heat insulation cover 1005 on both the front and rear sides closes inward, thereby wrapping the casting gate 700 with the heat insulation cover 1005. This avoids the phenomenon of molten iron rapidly cooling and sticking to the inner wall of the casting gate 700 during the casting process, thereby improving the processing efficiency of the equipment and reducing the manual cleaning process in the later stage.

[0023] In use, based on Example 1, when the internal pressure of hydraulic block 903 increases, the excess pressure inside the right hydraulic block 903 is transmitted to the inside of hydraulic block 1002 through hose 1001, increasing the internal pressure of hydraulic block 1002. This causes push block 1003 to be pushed outward, moving the insulation cover 1005 inward. As a result, the casting gate 700 is wrapped by the insulation cover 1005, thus preventing the molten iron from cooling rapidly and sticking to the inner wall of the casting gate 700 during the casting process. This improves the equipment's processing efficiency and reduces the need for manual cleaning in the later stages.

[0024] Example 3, please refer to Figures 1-8Based on Embodiment 1 and Embodiment 2, the waste heat utilization component 1100 includes a heat exchange medium inlet 1101, a heat exchange medium outlet 1102, a heat-conducting pad 1103, a heat exchange circular tube 1104, and a connecting pipe 1105. The heat exchange medium inlet 1101 is fixedly connected to the outside of the insulation cover 1005, and the heat exchange medium outlet 1102 is fixedly connected to the outside of the insulation cover 1005. Multiple heat-conducting pads 1103 are fixedly connected to the inner wall surface of the insulation cover 1005. The heat-conducting pads 1103 can quickly transfer the heat outside the casting port 700 to the inside of the heat exchange circular tube 1104. Multiple heat exchange circular tubes 1104 are fixedly connected to the inside of the insulation cover 1005. The heat exchange circular tubes 1104 can transfer the temperature inside the heat exchange circular tubes 1104 to the heat exchange medium. The connecting pipe 1105 is fixedly connected between the heat exchange circular tubes 1104. There are two heat exchange medium inlets 1101, two heat exchange medium outlets 1102, four heat exchange circular tubes 1104, and three connecting tubes 1105; The waste heat utilization component 1100 is installed so that when the insulation cover 1005 is closed inward, the heat exchange medium enters the heat exchange circular tube 1104 from the heat exchange medium inlet 1101 and flows out from the heat exchange medium outlet 1102. The heat-conducting pad 1103 transfers the waste heat from the casting port 700 to the heat exchange circular tube 1104, thereby raising the temperature of the heat exchange medium, thus transferring heat, utilizing waste heat, and saving resources.

[0025] In use, based on Embodiment 1 and Embodiment 2, when the heat insulation cover 1005 moves inward to close, the heat exchange medium is introduced from the heat exchange medium inlet 1101, so that the heat exchange medium flows in the heat exchange circular tube 1104. At this time, the molten iron being cast will raise the temperature outside the casting port 700, so that the heat conduction pad 1103 conducts the residual heat to the inside of the heat exchange circular tube 1104, so that the heat exchange medium absorbs the residual heat and then flows out from the heat exchange medium outlet 1102, thereby transferring heat, utilizing the residual heat, and saving resources.

[0026] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for manufacturing a high-precision stamping die, characterized in that, The components of the materials used to manufacture the mold are as follows: C：0.45-0.55%； Mn: 0.60-0.80%; Cr：4.8-5.2%； Mo: 1.20-1.50%; V：1.80-2.20%； Si: 0.90-1.10%; Ni: 0.10-0.30%; W：2.50-3.50%； The remainder consists of Fe and unavoidable impurities, and its manufacturing method includes the following steps: S1. The materials of the above components are vacuum induction melted according to the above proportions, and the melting temperature is 1480-1550°C. S2. The above-smelted material is poured into a mold at a pouring temperature of 1380-1420°C. S3. Use stepped isothermal annealing. First, cool to 750-780°C at a rate of ≤50°C / hour and hold for 4-6 hours; then cool to below 500°C and air cool. S4. Forge the cast mold blank, after stress relief annealing, rough mill the reference surface, and then perform secondary stress annealing at a temperature of 600-650°C for 3-5 hours. S5. Then, the mold blank is quenched using high-temperature quenching at a temperature of 1040-1080°C, and then graded quenching is performed in a salt bath at 50-500°C. After holding for 10-15 minutes, it is air-cooled. S6. Immediately subject the quenched metal mold blank to deep cryogenic treatment, cooling the mold to -80°C to -120°C and holding it at that temperature for 2-3 hours. S7. Precision milling of the forming surface of the mold blank; S8. Use a grinding wheel to finely grind the mold blank to make the surface smooth; S9. Then, the mold blank after S8 is subjected to three high-temperature temperings at a temperature of 520-560°C, with each tempering lasting for 2 hours. After each tempering, it needs to be cooled to room temperature before the next tempering. S10. Add a vapor deposition coating to the forming surface of the tempered mold blank. Use physical vapor deposition (PVD) process to deposit a coating on the forming surface with a coating thickness of 3-5 μm.

2. The method for manufacturing a high-precision stamping die according to claim 1, wherein the apparatus used is characterized in that, Includes a base, the top of which is provided with a housing, the top of which is provided with a fixing plate for fixing, and the top of which is provided with a lifting device for lifting. The lifting device is fixedly connected to two fixed plates on both sides. A push block is fixedly connected to the bottom of the fixed plate. A hydraulic block is movably connected to the bottom of the push block. The bottom of the hydraulic block is fixedly connected to the top of the fixed plate. The outer side of the hydraulic block is fixedly connected to one end of the hose. The other end of the hose is fixedly connected to the top of the hydraulic block. The outer side of the hydraulic block is fixedly connected to the front and rear sides of the fixed plate through a fixed plate. A push block is movably connected to the inner side of the hydraulic block. A positioning plate is fixedly connected to the inner side of the push block. The outer side of the hydraulic block is movably connected to an L-shaped clamping plate through a transmission component.

3. The method for manufacturing a high-precision stamping die according to claim 2, wherein the apparatus used is characterized in that: The transmission component includes a second flexible hose, a slide rail, a third hydraulic block, and a third pusher block. The outer side of the first hydraulic block is fixedly connected to one end of the second flexible hose, and the other end of the second flexible hose is fixedly connected to the top of the third hydraulic block. A slide rail is fixedly connected to the rear side of the positioning plate, and the outer side of the slide rail is fixedly connected to the inner side of the third hydraulic block. A third pusher block is movably connected to the bottom of the third hydraulic block, and the bottom of the third pusher block is fixedly connected to the L-shaped clamping plate. The outer side of the L-shaped clamping plate is slidably connected to the slide rail.

4. The method for manufacturing a high-precision stamping die according to claim 2, characterized in that: An electric push rod is fixedly connected to the top of the lifting device, a casting device is fixedly connected to the bottom of the electric push rod, a casting port is fixedly connected to the top of the casting device, an automatic unloading device is movably connected to the bottom of the casting device, heat insulation and anti-sticking components are movably connected to both sides of the casting port, and a waste heat utilization component is fixedly connected inside the heat insulation and anti-sticking components.

5. The method for manufacturing a high-precision stamping die according to claim 2, wherein the apparatus used is characterized in that: The number of hydraulic blocks one is four, and every two hydraulic blocks one form a group. The number of hoses one is four. The number of fixing plates three is two. The number of hydraulic blocks two is four. The number of push blocks two is four. The number of positioning plates is two. The number of hoses two is two. The number of slide rails is two. The number of hydraulic blocks three is two. The number of push blocks three is four, and every two push blocks three form a group. The number of L-shaped clamping plates is two.

6. The method for manufacturing a high-precision stamping die according to claim 4, wherein the apparatus used is characterized in that: The heat-insulating and anti-sticking assembly includes a hose three, a hydraulic block four, a push block four, a spring, and a heat-insulating cover. The outer side of the hydraulic block one is fixedly connected to one end of the hose three, and the other end of the hose three is fixedly connected to the rear side of the hydraulic block four. The bottom of the hydraulic block four is fixedly connected to the top of the lifting device. The front side of the hydraulic block four is movably connected to the push block four, and a spring is fixedly connected between the push block four and the hydraulic block four. The front side of the push block four is fixedly connected to the heat-insulating cover.

7. The method for manufacturing a high-precision stamping die according to claim 6, wherein the apparatus used is characterized in that: The number of hoses three is two, the number of hydraulic blocks four is two, the number of push blocks four is two, the number of springs is four, and the number of insulation covers is two.

8. The method for manufacturing a high-precision stamping die according to claim 6, wherein the apparatus used is characterized in that: The inner wall surface of the heat insulation cover is tangent to the outer side of the casting port.

9. The method for manufacturing a high-precision stamping die according to claim 4, wherein the apparatus used is characterized in that: The waste heat utilization component includes a heat exchange medium inlet, a heat exchange medium outlet, a heat-conducting pad, a heat exchange circular tube, and a connecting pipe. The heat exchange medium inlet is fixedly connected to the outside of the insulation cover, the heat exchange medium outlet is fixedly connected to the outside of the insulation cover, multiple heat-conducting pads are fixedly connected to the inner wall surface of the insulation cover, multiple heat exchange circular tubes are fixedly connected to the inside of the insulation cover, and connecting pipes are fixedly connected between the heat exchange circular tubes.

10. The method for manufacturing a high-precision stamping die according to claim 9, wherein the apparatus used is characterized in that: The number of heat exchange medium inlets is two, the number of heat exchange medium outlets is two, the number of heat exchange circular tubes is four, and the number of connecting tubes is three.

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