Middle-large mold manufacturing method based on multi-layer laser cutting and wire feeding welding

Abstract

The invention discloses a medium-large mold manufacturing method based on multi-layer laser cutting and wire feeding welding. The medium-large mold manufacturing method comprises the following steps that A1, three-dimensional modeling and multi-layer slicing are conducted; a2, laser cutting; a3, interlayer positioning and preliminary assembling are carried out; a4, wire feeding, welding and filling; a5, TIG argon arc welding treatment is carried out; a6, final milling and finish machining are carried out; and A7, surface treatment. And through the combined use of wire feeding welding and TIG argon arc welding, the concave part between layers is effectively filled, and the concave-convex phenomenon generated after multiple layers of slices are stacked is eliminated. Therefore, the flatness of the surface of the die is ensured, and the precision and the surface quality of the die are greatly improved. Wire feeding welding not only fills the gap between layers, but also enhances the bonding strength between the sheets. It is ensured that the mold can bear large mechanical stress in the using process, and layering or cracking is not prone to occurring.

Description

Technical Field

[0001] The invention relates to the technical field of mold processing, and in particular to a method for manufacturing medium-to-large-sized molds based on multi-layer laser cutting and wire feeding welding. Background Art

[0002] Mold manufacturing plays a key role in modern industry, especially in large-scale production and high-precision manufacturing. Traditional medium and large mold manufacturing processes mainly rely on CNC turning, milling and other mechanical processing methods. These methods process large pieces of metal materials into the required mold shape through machining processes such as cutting, milling and drilling. Although these processes have certain economic benefits in mass production, traditional processing methods have shown many limitations when facing small-batch mold production with complex structures and high precision requirements.

[0003] First, the material utilization rate in traditional processing methods is low. Since the turning and milling processes require the gradual removal of excess parts from large pieces of raw materials, a large amount of material is cut into waste, which increases material costs and has a certain impact on the environment. In addition, molds with complex shapes require multiple clamping and repositioning, which not only prolongs the processing time, but also easily leads to the accumulation of processing errors, affecting the final accuracy of the mold. In this case, the mold may appear uneven during assembly, further affecting the performance of the mold.

[0004] Secondly, in traditional processes, due to the effects of cutting force and heat, the mold is prone to deformation during processing, especially in the manufacture of large-sized and complex molds. This deformation will directly affect the geometric accuracy of the mold, thereby reducing the quality of the final product. In order to overcome these problems, the industry continues to explore new processes and technologies to improve the accuracy of mold manufacturing, reduce material waste, and shorten the production cycle.

[0005] Therefore, the prior art has defects and needs to be improved. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a medium-to-large-sized mold manufacturing method based on multi-layer laser cutting and wire feeding welding in view of the deficiencies in the prior art.

[0007] The technical solution of the present invention is as follows:

[0008] A method for manufacturing medium and large-sized molds based on multi-layer laser cutting and wire feeding welding comprises the following steps:

[0009] A1. 3D modeling and multi-layer slicing: First, the mold is 3D modeled and sliced ​​into multiple thin layers using slicing software;

[0010] A2. Laser cutting: Use laser cutting equipment to cut metal sheets, and accurately cut out the two-dimensional contour of each layer according to the pre-designed slicing drawings;

[0011] A3. Interlayer positioning and preliminary assembly: After cutting, the thin film layers are preliminarily assembled through positioning holes and positioning pins;

[0012] A4. Wire feeding welding filling: After the initial assembly of the sheet layers, the concave parts between the layers are filled by wire feeding welding process;

[0013] A5. TIG argon arc welding treatment: After completing the wire feeding welding filling, use TIG argon arc welding technology to melt the convex corners of the mold;

[0014] A6. Final milling and finishing: After welding is completed, the entire mold is placed on a high-precision machine tool for milling;

[0015] A7. Surface treatment: According to the use environment and requirements of the mold, the mold surface is treated after welding.

[0016] In the medium and large mold manufacturing method, in step A1, the outline of each thin layer is a two-dimensional closed shape, and the thickness of the thin layer is adjusted according to the complexity and strength requirements of the mold; during the slicing process, the designer needs to consider the joints between the layers and reserve space for subsequent welding.

[0017] In the method for manufacturing medium-to-large molds, in step A2, laser cutting ensures that the shape and size of each thin layer meet the design requirements; positioning holes are reserved during cutting to ensure alignment accuracy in the subsequent assembly process.

[0018] The medium-to-large mold manufacturing method is carried out in step A3 on a dedicated assembly table or fixture.

[0019] In the medium and large mold manufacturing method, in step A4, wire feeding welding can accurately fill the gaps between the sheets and eliminate the concave and convex layer phenomenon caused by multi-layer superposition; the selection of welding materials should take into account their compatibility with the sheet material to ensure welding strength and stability of the overall structure.

[0020] In the method for manufacturing medium-to-large-sized molds, in step A6, additional surface treatment, such as polishing or coating, may be performed to further improve the performance of the mold.

[0021] The method for manufacturing medium-to-large molds, in step A7, includes but is not limited to polishing, electroplating and coating treatments to improve the wear resistance and corrosion resistance of the mold and extend the service life of the mold.

[0022] By adopting the above scheme, the present invention proposes a method for manufacturing medium and large molds based on multi-layer laser cutting and wire feeding welding. By combining multi-layer laser cutting technology, precision wire feeding welding process and TIG argon arc welding technology, the concave and convex layer phenomenon of the mold can be effectively eliminated, ensuring the high precision and high strength of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of wire feeding welding filling;

[0024] Figure 2 This is a schematic diagram of TIG argon arc welding process;

[0025] Figure 3 It is a schematic diagram of milling and finishing;

[0026] 1. Mold slicing, 2. Positioning holes, 3. Wire feeding welding part, 4. TIG argon arc welding melting part, 5. Milling part, 6. Final mold section line; DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with specific embodiments.

[0028] This embodiment provides a method for manufacturing a medium-to-large mold based on multi-layer laser cutting and wire feeding welding, which specifically includes the following steps:

[0029] A1. 3D modeling and multi-layer slicing: First, the mold is 3D modeled and sliced ​​into multiple thin layers using slicing software. The outline of each thin layer is a two-dimensional closed shape, and the thickness of these thin layers can be adjusted according to the complexity and strength requirements of the mold. During the slicing process, designers need to consider the joints between layers and reserve space for subsequent welding.

[0030] A2. Laser cutting: Use laser cutting equipment to cut metal sheets, and accurately cut out the two-dimensional contour of each layer according to the pre-designed slice drawing. The high-precision characteristics of laser cutting ensure that the shape and size of each thin layer meet the design requirements. At the same time, positioning holes are reserved during cutting to ensure the alignment accuracy during the subsequent assembly process.

[0031] A3. Interlayer positioning and preliminary assembly: After cutting, the thin film layers are preliminarily assembled through positioning holes and positioning pins. This step ensures accurate alignment between the layers of thin films to avoid misalignment between layers. This process can be carried out on a dedicated assembly table or fixture to further improve positioning accuracy.

[0032] A4. Wire feeding welding filling ( Figure 1): After the initial assembly of the sheet layers, the concave parts between the layers are filled by wire feeding welding process. Wire feeding welding can accurately fill the gaps between the sheets and eliminate the concave and convex layer phenomenon caused by multi-layer superposition. The selection of welding materials should take into account its compatibility with the sheet material to ensure the welding strength and the stability of the overall structure.

[0033] A5.TIG argon arc welding process ( Figure 2 ): After completing the wire feeding welding filling, use TIG argon arc welding technology to melt the convex corners of the mold.

[0034] A6. Final milling and finishing ( Figure 3 ): After welding, the entire mold is placed on a high-precision machine for milling. This step not only removes the slight deformation that may occur during welding, but also ensures that the final geometric dimensions of the mold meet the design requirements. For molds with special requirements, additional surface treatments such as polishing or coating can be performed to further improve the performance of the mold.

[0035] A7. Surface treatment: According to the use environment and requirements of the mold, the mold surface after welding is processed, including but not limited to polishing, electroplating and coating. These processing steps can improve the wear resistance and corrosion resistance of the mold and extend the service life of the mold.

[0036] The process flow of the present invention optimizes the multiple processes in traditional mold manufacturing, reduces the time of multiple clamping and processing, and significantly shortens the production cycle. In particular, for molds with complex shapes and high precision requirements, the present invention can quickly respond to design changes and production needs.

[0037] The method of the invention is applicable to the manufacture of molds of various complex shapes and can flexibly respond to different design requirements. Regardless of whether it is a complex geometric structure or a high-strength mold requirement, the invention can provide a reliable solution.

[0038] Laser cutting technology greatly improves the utilization rate of materials. By cutting into multiple thin layers, material waste is minimized, which is particularly important in small batch production and significantly reduces production costs.

[0039] The combination of multi-layer laser cutting and precision welding technology has significantly improved the processing accuracy of the mold. Through reasonable positioning design and high-precision processing equipment, the precise alignment of each layer of the sheet is ensured, avoiding the problem of cumulative processing errors that may occur in traditional methods.

[0040] By combining wire feeding welding and TIG argon arc welding, the concave parts between layers are effectively filled, and the concave and convex phenomena caused by the superposition of multiple layers of slices are eliminated. This ensures the flatness of the mold surface and greatly improves the precision and surface quality of the mold. Wire feeding welding not only fills the gaps between layers, but also enhances the bonding strength between thin slices. It ensures that the mold can withstand greater mechanical stress during use and is not prone to delamination or cracking.

[0041] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A method for manufacturing medium and large-sized molds based on multi-layer laser cutting and wire feeding welding, characterized in that: The following steps are involved: A1. 3D modeling and multi-layer slicing: First, the mold is 3D modeled and sliced ​​into multiple thin layers using slicing software; A2. Laser cutting: Use laser cutting equipment to cut metal sheets, and accurately cut out the two-dimensional contour of each layer according to the pre-designed slicing drawings; A3. Interlayer positioning and preliminary assembly: After cutting, the thin film layers are preliminarily assembled through positioning holes and positioning pins; A4. Wire feeding welding filling: After the initial assembly of the sheet layers, the concave parts between the layers are filled by wire feeding welding process; A5. TIG argon arc welding treatment: After completing the wire feeding welding filling, use TIG argon arc welding technology to melt the convex corners of the mold; A6. Final milling and finishing: After welding is completed, the entire mold is placed on a high-precision machine tool for milling; A7. Surface treatment: According to the use environment and requirements of the mold, the mold surface is treated after welding.

2. The method for manufacturing medium-to-large-sized molds according to claim 1, characterized in that: In step A1, the outline of each thin layer is a two-dimensional closed shape, and the thickness of the thin layer is adjusted according to the complexity and strength requirements of the mold; during the slicing process, the designer needs to consider the joints between the layers and reserve space for subsequent welding.

3. The method for manufacturing medium-to-large-sized molds according to claim 1, characterized in that: In step A2, laser cutting ensures that the shape and size of each thin layer meet the design requirements; positioning holes are reserved during cutting to ensure alignment accuracy during subsequent assembly.

4. The method for manufacturing medium-to-large-sized molds according to claim 1, characterized in that: In step A3, it is carried out on a dedicated assembly table or jig.

5. The method for manufacturing medium-to-large-sized molds according to claim 1, characterized in that: In step A4, wire feeding welding can accurately fill the gaps between the sheets and eliminate the concave and convex layer phenomenon caused by multi-layer superposition; The selection of welding materials should take into account their compatibility with thin sheet materials to ensure welding strength and the stability of the overall structure.

6. The method for manufacturing a medium-to-large-sized mold according to claim 1, characterized in that: In step A6, additional surface treatment is performed, including polishing or coating.

7. The method for manufacturing a medium-to-large-sized mold according to claim 1, characterized in that: In step A7, including but not limited to polishing, electroplating and coating treatment, the wear resistance and corrosion resistance of the mold are improved, and the service life of the mold is extended.

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