A manufacturing process method of a cavity mold for a landscape sculpture

Abstract

The present application relates to the technical field of landscape sculpture, and particularly relates to a landscape sculpture cavity mold manufacturing process method, which comprises the following steps: S1, cutting a blank according to the size of a landscape sculpture to obtain a mold material, placing the mold material on a numerical control milling processing platform, starting the numerical control milling processing platform, performing rough milling processing on the mold material by the numerical control milling processing platform to obtain a rough milling cavity material plate, placing the rough milling cavity material plate into a vacuum quenching furnace for quenching heat treatment, taking out the rough milling cavity material plate after the quenching heat treatment and cooling to room temperature; S2, using a design software to establish a 3D model of a cavity according to the landscape sculpture, segmenting the protruding parts of the outer wall of the 3D model to obtain corresponding 3D sub-models, adding the mold material into the numerical control milling processing platform, inputting the 3D sub-models into a numerical control milling processing platform controller in sequence, and performing close milling processing on the mold material by the numerical control milling processing platform, so that the problem of complex internal shape of the cavity mold, more manufacturing procedures and low work efficiency can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of landscape sculpture technology, specifically to a method for manufacturing cavity molds for landscape sculptures. Background Technology

[0002] Landscape sculptures are items used to decorate the environment. Landscape sculptures are generally made by hand carving, which is a long manufacturing process. In order to improve work efficiency, cavity molds are now used to manufacture sculptures. However, existing cavity molds still have shortcomings, specifically: the internal shape of existing cavity molds is complex, there are many manufacturing steps, and the work efficiency is low.

[0003] Therefore, a manufacturing process for the cavity mold of landscape sculpture is needed to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this invention is to provide a manufacturing process for cavity molds of landscape sculptures to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A method for manufacturing a cavity mold for a landscape sculpture includes the following steps:

[0007] S1. Cut the blank according to the size of the landscape sculpture to obtain the mold material. Place the mold material on the CNC milling platform, start the CNC milling platform, and perform rough milling on the mold material to obtain the rough milled cavity material plate. Place the rough milled cavity material plate into the vacuum quenching furnace for quenching heat treatment. After the quenching treatment is completed, take it out and cool it to room temperature.

[0008] S2. Using design software, a 3D model of the cavity is created based on the landscape sculpture. The protruding parts of the outer wall of the 3D model are divided to obtain the corresponding 3D sub-models. The mold material is added to the CNC milling platform, and the 3D sub-models are sequentially input into the CNC milling platform controller. The CNC milling platform performs precision milling on the mold material to obtain the live core block. After heat treatment, the live core block is removed and cooled to room temperature.

[0009] S3. Weld the live core block to the corresponding position in the rough milling cavity material plate. Use a grinding machine to fine grind the inner wall of the rough milling cavity material plate. After the fine grinding is completed, send it into a shot peening machine for shot peening. After the shot peening is completed, perform deep cryogenic treatment on the rough milling cavity material plate to obtain the cavity mold.

[0010] As a preferred embodiment of the present invention, the length, width, and thickness of the mold material obtained by cutting the blank in S1 exceed the maximum length, width, and thickness of the landscape sculpture by 10%, respectively. The milling speed of the rough milling is 130-160 m / min, the feed rate is 0.2-0.4 mm / tooth, the machining allowance left at the bottom of the cavity after the rough milling is 2-2.8 mm, and the machining allowance left on both walls is 2-2.6 mm.

[0011] As a preferred embodiment of the present invention, the specific steps of the quenching heat treatment in S1 are as follows: the rough milling cavity material plate is continuously heated to 980-1030℃, and then the mold core blank is cooled to 420-450℃ by oil cooling or air cooling and then air-cooled. The air-cooled mold core blank is then tempered to make its hardness 45-48HRC.

[0012] As a preferred embodiment of the present invention, the spindle speed for the precision milling process in S2 is 25000-42000 r / min, the feed rate is 0.02-0.1 mm / r, a custom tapered end mill made of M609 tungsten carbide material is used, the tip diameter of the end mill is 0.2-2 mm, and the cavity is precision milled to the dimensions required by the drawing.

[0013] As a preferred embodiment of the present invention, the specific steps of the heat treatment of the live core block in S2 are as follows: the live core block is placed in a vacuum furnace, quenched in a protective gas, preheated in two parts at 500-550℃ and 850-900℃, austenitized at 1145℃ for 18 minutes, and slowly cooled to 40-50℃ to obtain a hardness of HRC63-65. Then it is tempered three times, each tempering temperature is 560℃, the holding time is at least 1 hour, and then cooled to room temperature so that the amount of residual austenite in the workpiece is less than 1%.

[0014] As a preferred embodiment of the present invention, the specific steps of the welding process in S3 are as follows: the welding area of ​​the rough milled cavity material plate and the movable core block is polished with sandpaper to remove the oxide film, and then the welding area of ​​the rough milled cavity material plate and the movable core block is cleaned with cleaning solution. After cleaning, acetone and deionized water are used for rinsing in sequence. The welding area of ​​the rough milled cavity material plate and the movable core block is preheated and flux is applied. The movable core block is placed tightly against the welding position of the inner wall of the rough milled cavity material plate. The movable core block is welded to the inside of the rough milled cavity material plate with a welding gun. Then the welding area is tempered.

[0015] As a preferred embodiment of the present invention, the shot peening treatment in S3 uses steel shot of 100-1000μm, the shot peening time is 4min-5min, the shot peening intensity is greater than 0.5A, and the surface coverage is greater than 95%.

[0016] As a preferred embodiment of the present invention, the specific steps of the cryogenic treatment in S3 are as follows: the rough milled cavity material plate is placed in an environment of -150℃ to -196℃ for 1 to 3 hours for cryogenic treatment to obtain stable dimensions.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In this invention, a mold material is obtained by cutting a blank according to the dimensions of a landscape sculpture. The mold material is then placed on a CNC milling platform, which is started to perform rough milling on the mold material, resulting in a rough-milled cavity material plate. This rough-milled cavity material plate is then placed in a vacuum quenching furnace for quenching heat treatment. After quenching, it is removed and cooled to room temperature. A 3D model of the cavity is created using design software based on the landscape sculpture. The protruding parts of the outer wall of the 3D model are divided to obtain corresponding 3D sub-models. The mold material is then added to the CNC milling platform. The 3D sub-model is sequentially input into the CNC milling platform controller. The CNC milling platform performs precision milling on the mold material to obtain a live core block. After heat treatment, the live core block is removed and cooled to room temperature. The live core block is then welded and installed in the corresponding position inside the rough milling cavity material plate. The inner wall of the rough milling cavity material plate is then precision ground using a grinding machine. After the precision grinding is completed, the plate is sent to a shot peening machine for shot peening. After the shot peening is completed, the rough milling cavity material plate undergoes deep cryogenic treatment to obtain the cavity mold. The manufacturing process is relatively simple and can effectively improve work efficiency. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In this embodiment, the present invention provides a technical solution:

[0021] A method for manufacturing a cavity mold for a landscape sculpture includes the following steps:

[0022] S1. Cut the blank according to the size of the landscape sculpture to obtain the mold material. Place the mold material on the CNC milling platform, start the CNC milling platform, and perform rough milling on the mold material to obtain the rough milled cavity material plate. Place the rough milled cavity material plate into the vacuum quenching furnace for quenching heat treatment. After the quenching treatment is completed, take it out and cool it to room temperature.

[0023] S2. Using design software, a 3D model of the cavity is created based on the landscape sculpture. The protruding parts of the outer wall of the 3D model are divided to obtain the corresponding 3D sub-models. The mold material is added to the CNC milling platform, and the 3D sub-models are sequentially input into the CNC milling platform controller. The CNC milling platform performs precision milling on the mold material to obtain the live core block. After heat treatment, the live core block is removed and cooled to room temperature.

[0024] S3. Weld the live core block to the corresponding position in the rough milling cavity material plate. Use a grinding machine to fine grind the inner wall of the rough milling cavity material plate. After the fine grinding is completed, send it into a shot peening machine for shot peening. After the shot peening is completed, perform deep cryogenic treatment on the rough milling cavity material plate to obtain the cavity mold.

[0025] As a preferred embodiment of the present invention, the length, width, and thickness of the mold material obtained by cutting the blank in S1 exceed the maximum length, width, and thickness of the landscape sculpture by 10%, respectively. The milling speed of the rough milling is 130-160 m / min, the feed rate is 0.2-0.4 mm / tooth, the machining allowance left at the bottom of the cavity after the rough milling is 2-2.8 mm, and the machining allowance left on both walls is 2-2.6 mm.

[0026] As a preferred embodiment of the present invention, the specific steps of the quenching heat treatment in S1 are as follows: the rough milling cavity material plate is continuously heated to 980-1030℃, and then the mold core blank is cooled to 420-450℃ by oil cooling or air cooling and then air-cooled. The air-cooled mold core blank is then tempered to make its hardness 45-48HRC.

[0027] As a preferred embodiment of the present invention, the spindle speed for the precision milling process in S2 is 25000-42000 r / min, the feed rate is 0.02-0.1 mm / r, a custom tapered end mill made of M609 tungsten carbide material is used, the tip diameter of the end mill is 0.2-2 mm, and the cavity is precision milled to the dimensions required by the drawing.

[0028] As a preferred embodiment of the present invention, the specific steps of the heat treatment of the live core block in S2 are as follows: the live core block is placed in a vacuum furnace, quenched in a protective gas, preheated in two parts at 500-550℃ and 850-900℃, austenitized at 1145℃ for 18 minutes, and slowly cooled to 40-50℃ to obtain a hardness of HRC63-65. Then it is tempered three times, each tempering temperature is 560℃, the holding time is at least 1 hour, and then cooled to room temperature so that the amount of residual austenite in the workpiece is less than 1%.

[0029] As a preferred embodiment of the present invention, the specific steps of the welding process in S3 are as follows: the welding area of ​​the rough milled cavity material plate and the movable core block is polished with sandpaper to remove the oxide film, and then the welding area of ​​the rough milled cavity material plate and the movable core block is cleaned with cleaning solution. After cleaning, acetone and deionized water are used for rinsing in sequence. The welding area of ​​the rough milled cavity material plate and the movable core block is preheated and flux is applied. The movable core block is placed tightly against the welding position of the inner wall of the rough milled cavity material plate. The movable core block is welded to the inside of the rough milled cavity material plate with a welding gun. Then the welding area is tempered.

[0030] As a preferred embodiment of the present invention, the shot peening treatment in S3 uses steel shot of 100-1000μm, the shot peening time is 4min-5min, the shot peening intensity is greater than 0.5A, and the surface coverage is greater than 95%.

[0031] As a preferred embodiment of the present invention, the specific steps of the cryogenic treatment in S3 are as follows: the rough milled cavity material plate is placed in an environment of -150℃ to -196℃ for 1 to 3 hours for cryogenic treatment to obtain stable dimensions.

[0032] Specific Implementation Cases

[0033] Cut the blank according to the dimensions of the landscape sculpture to obtain the mold material. The length, width, and thickness of the mold material obtained by cutting the blank exceed the maximum length, width, and thickness of the landscape sculpture by 10%, respectively. Place the mold material on a CNC milling platform and start the CNC milling platform to perform rough milling on the mold material. The milling speed of the rough milling is 130-160 m / min and the feed rate is 0.2-0.4 mm / tooth. The machining allowance left at the bottom of the cavity after rough milling is 2-2.8 mm, and the machining allowance left on both walls is 2-2.6 mm, to obtain the rough milled cavity material plate. Place the rough milled cavity material plate in a vacuum quenching furnace and heat it continuously to 980-1030℃. Then, use oil cooling or air cooling to cool the mold core blank to 420-450℃ and then air cool it. Temper the air-cooled mold core blank to make its hardness 45-48 HRC. After the quenching treatment is completed, take it out and cool it to room temperature.

[0034] Using design software, a 3D model of the cavity of the landscape sculpture is created. The protruding parts of the outer wall of the 3D model are segmented to obtain corresponding 3D sub-models. Mold material is added to the CNC milling platform, and the 3D sub-models are sequentially input into the CNC milling platform controller. The CNC milling platform performs finish milling on the mold material. The spindle speed for finish milling is 25000-42000 r / min, the feed rate is 0.02-0.1 mm / r, and a custom-made tapered end mill made of M609 tungsten carbide material is used, with a cutter tip diameter of 0.2- 2mm, the cavity is precision milled to the dimensions required by the drawing to obtain a live core block. The live core block is placed in a vacuum furnace and quenched in a protective gas environment. It is preheated in two parts at 500-550℃ and 850-900℃. It is austenitized at 1145℃ for 18 minutes and then slowly cooled to 40-50℃ to obtain a hardness of HRC63-65. It is then tempered in three parts, each tempering temperature is 560℃ and the holding time is at least 1 hour. Then it is cooled to room temperature so that the residual austenite content of the workpiece is less than 1%. It is then removed and cooled to room temperature.

[0035] The welding areas of the rough-milled cavity material plate and the mandrel block are sanded with sandpaper to remove the oxide film. Then, the welding areas are cleaned with cleaning fluid. After cleaning, they are rinsed with acetone and deionized water in sequence. The welding area of ​​the rough-milled cavity material plate and the mandrel block is preheated and fluxed. The mandrel block is then welded tightly to the inner wall of the rough-milled cavity material plate using a welding torch. Finally, the welding area is tempered. The inner wall of the rough-milled cavity material plate is finely ground using a grinding machine. After fine grinding, it is sent to a shot peening machine for shot peening. The shot peening uses steel shot of 100-1000μm, the shot peening time is 4-5 minutes, the shot peening intensity is greater than 0.5A, and the surface coverage is greater than 95%. After shot peening, the rough-milled cavity material plate is placed in an environment of -150℃ to -196℃ for 1-3 hours for cryogenic treatment to obtain stable dimensions and obtain the cavity mold.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for manufacturing a cavity mold for a landscape sculpture, characterized in that, Includes the following steps: S1. Cut the blank according to the size of the landscape sculpture to obtain the mold material. Place the mold material on the CNC milling platform, start the CNC milling platform, and perform rough milling on the mold material to obtain the rough milled cavity material plate. Place the rough milled cavity material plate into the vacuum quenching furnace for quenching heat treatment. After the quenching treatment is completed, take it out and cool it to room temperature. S2. Using design software, a 3D model of the cavity is created based on the landscape sculpture. The protruding parts of the outer wall of the 3D model are divided to obtain the corresponding 3D sub-models. The mold material is added to the CNC milling platform, and the 3D sub-models are sequentially input into the CNC milling platform controller. The CNC milling platform performs precision milling on the mold material to obtain the live core block. After heat treatment, the live core block is removed and cooled to room temperature. S3, weld the live core block to the corresponding position in the rough milling cavity material plate, use a grinding machine to fine grind the inner wall of the rough milling cavity material plate, after the fine grinding is completed, send it into the shot peening machine for shot peening, after the shot peening is completed, perform deep cryogenic treatment on the rough milling cavity material plate to obtain the cavity mold. The specific steps of the quenching heat treatment in S1 are as follows: the rough milling cavity material plate is continuously heated to 980-1030℃, and then the mold core blank is cooled to 420-450℃ by oil cooling or air cooling and then air cooled. The air-cooled mold core blank is tempered to make its hardness 45-48HRC. The specific steps of the heat treatment of the live core block in S2 are as follows: the live core block is placed in a vacuum furnace and quenched in a protective gas environment. It is preheated in two parts at 500-550°C and 850-900°C. It is then austenitized at 1145°C for 18 minutes and slowly cooled to 40-50°C to obtain a hardness of HRC63-65. It is then tempered three times, with each tempering temperature at 560°C and a holding time of at least 1 hour. Finally, it is cooled to room temperature so that the amount of retained austenite in the workpiece is less than 1%. The specific steps of the welding process in S3 are as follows: use sandpaper to grind the welding parts of the rough milled cavity material plate and the movable core block to remove the oxide film, then use cleaning solution to clean the welding parts of the rough milled cavity material plate and the movable core block. After cleaning, rinse with acetone and deionized water in sequence. Preheat the welding area of ​​the rough milled cavity material plate and the movable core block and apply flux. Place the movable core block tightly against the welding position of the inner wall of the rough milled cavity material plate, and use a welding torch to weld the movable core block into the inside of the rough milled cavity material plate. Then, temper the welding area.

2. The method for manufacturing a cavity mold for a landscape sculpture according to claim 1, characterized in that: The length, width, and thickness of the mold material obtained by cutting the blank in S1 exceed the maximum length, width, and thickness of the landscape sculpture by 10%, respectively. The milling speed of the rough milling is 130-160 m / min, and the feed rate is 0.2-0.4 mm / tooth. The machining allowance left at the bottom of the cavity after rough milling is 2-2.8 mm, and the machining allowance left on both walls is 2-2.6 mm.

3. The method for manufacturing a cavity mold for a landscape sculpture according to claim 1, characterized in that: The spindle speed for precision milling in S2 is 25000-42000 r / min, the feed rate is 0.02-0.1 mm / r, and a custom tapered end mill made of M609 tungsten carbide material is used. The end mill tip diameter is 0.2-2 mm, and the cavity is precision milled to the dimensions required by the drawing.

4. The method for manufacturing a cavity mold for a landscape sculpture according to claim 1, characterized in that: In S3, the shot peening process uses steel shot of 100-1000μm, the shot peening time is 4-5 minutes, the shot peening intensity is greater than 0.5A, and the surface coverage is greater than 95%.

5. The method for manufacturing a cavity mold for a landscape sculpture according to claim 1, characterized in that: The specific steps of the cryogenic treatment in S3 are as follows: the rough-milled cavity material plate is placed in an environment of -150℃ to -196℃ for 1 to 3 hours for cryogenic treatment to obtain stable dimensions.