A small blade manufacturing method based on 3D printing technology

Abstract

The application discloses a kind of based on 3D printing technology Small blade manufacturing method, blade is segmented, according to material type is divided into three parts, including blade root, blade root connecting section and main blade;Blade root part is processed using equipment, blade root connecting section is printed using FDM printer in 3D printing;Main blade is segmented and handled, and is printed segment by segment using FDM printer;Blade root, blade root connecting section and main blade segment are assembled after printing is completed;Glass fiber cloth is wrapped on the surface of assembled blade.The application reduces manufacturing cost, shortens manufacturing cycle, adopts segmented structure for main blade, can select regional punching according to need, pours into counterweight, adjusts blade balance, uses bolt, internal hexagon top wire and adhesive combination for blade connecting assembly, ensures the strength of blade, and the strength of blade reaches the requirement by using glass steel composite material wrapping on surface.

Description

Technical Field

[0001] This invention relates to the field of product manufacturing with complex shapes, specifically a method for manufacturing small blades based on 3D printing technology. Background Technology

[0002] Machining blades and other parts with complex surfaces has always been a challenge in industry. Using machining centers to create molds and then using those molds to manufacture the final product is the preferred solution. However, creating molds for products with complex surface structures is difficult, and the more complex the product structure, the higher the mold-making cycle and cost. How to achieve rapid manufacturing of products with complex surface structures has become a pressing issue in this field.

[0003] 3D printing, also known as additive manufacturing, is a technology that uses digital model files as a basis and employs powdered metal or plastic and other binder materials to construct objects layer by layer. Compared to general subtractive manufacturing technologies, it features faster forming speed, higher material utilization, and lower forming costs. 3D printing technologies include photopolymerization, fused deposition modeling (FDM), and laser sintering. This invention uses fused deposition modeling technology, specifically an FDM printer, to print blades using a layer-by-layer structure. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a method for manufacturing small blades based on 3D printing technology, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for manufacturing small blades based on 3D printing technology, comprising the following steps:

[0006] S01: The blade is divided into three parts according to the material type, including the leaf root, the leaf root connecting section and the main blade;

[0007] S02: Use equipment to process the blade root part, and use an FDM printer in 3D printing to print the blade root connection section;

[0008] S03: The main blade is segmented into three sections: the tail section, the middle section, and the head section. Each section is printed individually using an FDM printer.

[0009] S04: Assemble the printed leaf roots, leaf root connecting segments, and main blades in sections;

[0010] S05: Wrap fiberglass cloth around the surface of the assembled blade.

[0011] As a preferred embodiment of the present invention, the blade root is pre-reserved with a pin groove and a threaded hole for assembly with the blade root connection section during the manufacturing process.

[0012] As a preferred embodiment of the present invention, the printing material of the leaf root connecting section is 1.75mm ABS filament, the printing layer thickness is 0.2mm, the printing shell thickness is 4mm, and the printing fill is a mesh structure with a 15% fill rate.

[0013] As a preferred embodiment of the present invention, pin slots are reserved on the upper and lower surfaces of the blade tail, blade middle and blade head. The printing material of the main blade is 1.75mm PLA wire, the printing layer thickness is 0.2mm, the printing shell thickness is 4mm, and the printing fill is a mesh structure with a 15% fill rate.

[0014] As a preferred embodiment of the present invention, the blade root and the blade root connecting section are assembled using pins, hex bolts and adhesive; the blade tail, the blade middle and the blade head are assembled using pins and adhesive.

[0015] As a preferred embodiment of the present invention, the fiber cloth of the fiberglass is 1200 triaxial fiberglass cloth, and the thickness of the wrapping on the blade surface is 2mm.

[0016] As a preferred embodiment of the present invention, the pins used for the leaf roots, leaf root connecting sections, and the segments of the blades are all made of aluminum alloy.

[0017] The beneficial effects of this invention are:

[0018] 1. Compared with existing methods for manufacturing blades using molds, this invention significantly reduces manufacturing costs and shortens the manufacturing cycle because it eliminates the need for mold manufacturing.

[0019] 2. The main blades adopt a segmented structure, and holes can be drilled in selected areas as needed to inject counterweights and adjust the blade balance.

[0020] 3. For blade connection and assembly, a combination of pins, hexagonal set screws, and adhesive was used to ensure the strength of the blades.

[0021] 4. The surface is wrapped with fiberglass composite material, which ensures that the blades meet the required strength. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the blade structure of the present invention;

[0023] Figure 2 This is a cross-sectional view of the blade of the present invention.

[0024] In the figure: blade 1, blade tail 101, blade middle 102, blade head 103, blade root connecting section 104, blade root 105, hex socket bolt 106, fiberglass 107, first pin 108, second pin 109. Detailed Implementation

[0025] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0026] Example: Please refer to Figure 1-2 This invention provides a technical solution: a method for manufacturing small blades based on 3D printing technology, comprising the following steps:

[0027] S01: The blade is divided into three parts according to the material type, including the blade root 105, the blade root connecting section 104, and the main blade.

[0028] S02: Use equipment to process the blade root 105 part, and use an FDM printer in 3D printing to print the blade root connecting section 104;

[0029] S03: The main blade is segmented into three sections: blade tail 101, blade middle 102, and blade head 103. Each section is printed individually using an FDM printer.

[0030] S04: Assemble the printed leaf root 105, leaf root connecting segment 104 and main blade segment by segment;

[0031] S05: Wrap fiberglass cloth around the surface of the assembled blade.

[0032] The blade root 105 is pre-drilled with a pin groove and a threaded hole for assembly with the blade root connecting section 104 during the manufacturing process.

[0033] The printing material for the leaf root connecting section 104 is 1.75mm ABS filament, the printing layer thickness is 0.2mm, the printing shell thickness is 4mm, and the printing fill is a mesh structure with a 15% fill rate.

[0034] Pin slots are reserved on the upper and lower surfaces of the blade tail 101, blade middle 102 and blade head 103. The printing material of the main blade is 1.75mm PLA wire, the printing layer thickness is 0.2mm, the printing shell thickness is 4mm, and the printing fill is a mesh structure with a 15% fill rate.

[0035] The blade root 105 and the blade root connecting section 104 are assembled using pins, hex bolts 106 and adhesive; the blade tail 101, the blade middle section 102 and the blade head 103 are assembled using pins and adhesive.

[0036] The fiber cloth of FRP 107 is 1200 triaxial fiber cloth, and the thickness of the wrapping on the blade surface is 2mm.

[0037] The blade root 105, the blade root connecting section 104, and the pins used between each segment of the blade are all made of aluminum alloy.

[0038] Working principle: A method for manufacturing small blades based on 3D printing technology.

[0039] S01, the blade is divided into three parts according to the material type, including blade root 105 (aluminum alloy), blade root connecting section 104 (ABS), and main blade (PLA).

[0040] S02, the blade root part is manufactured on a lathe, and the blade root connection part is printed using an FDM printer in 3D printing.

[0041] S03, the main blade is segmented and the segments are printed one by one using an FDM printer;

[0042] S04, assemble the printed leaf root 105, leaf root connecting section 104 and main blade;

[0043] S05, the assembled blade surface is wrapped with fiberglass cloth.

[0044] During manufacturing, the blade root 105 should have four threaded holes pre-drilled for assembly with the blade root connecting section 104, evenly distributed on the outer surface of the blade root. The bottom of the blade root should also have four pin slots pre-drilled for connection and assembly with the blade root.

[0045] The leaf root connecting section 104 is printed using an FDM printer with 1.75mm ABS filament as the printing material. The printing layer thickness is 0.2mm, the outer shell thickness is 4mm, and the printing fill is a mesh structure with a 15% fill rate. Four pin slots should be reserved at the bottom during the printing process.

[0046] When the main blade segments are layered, pin slots should be reserved on the top and bottom surfaces of each segment, and the layering surfaces should be closed. The three segments of the main blade are printed using an FDM printer. The printing material is 1.75mm PLA filament, the layer thickness is 0.2mm, the outer shell thickness is 4mm, and the infill is a mesh structure with a 15% infill rate.

[0047] The blade root 105 and the blade root connecting section 104 are assembled using pins, hexagonal set screws, and adhesive. The segments in the main blade are assembled using pins and adhesive.

[0048] The fiberglass cloth is 1200 triaxial fiberglass cloth, and the thickness of the wrapping on the blade surface is 2mm.

[0049] Compared with existing methods of manufacturing blades using molds, this invention significantly reduces manufacturing costs and shortens the manufacturing cycle because it eliminates the need for mold manufacturing. The main blades adopt a segmented structure, allowing for the drilling of selected areas to inject counterweights and adjust blade balance as needed. For blade connection and assembly, a combination of pins, hexagonal set screws, and adhesives is used to ensure blade strength. The surface is wrapped with fiberglass composite material, ensuring that the blades meet the required strength.

[0050] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A method for manufacturing small blades based on 3D printing technology, characterized in that: Includes the following steps: S01: The blade is divided into three parts according to the material type, including the leaf root (105), the leaf root connecting section (104) and the main blade; S02: Use equipment to process the leaf root (105) part, and use an FDM printer in 3D printing to print the leaf root connecting section (104); the printing material of the leaf root connecting section (104) is 1.75mm ABS filament, the printing layer thickness is 0.2mm, the printing shell thickness is 4mm, and the printing fill is a mesh structure with a 15% fill rate. S03: The main blade is segmented into three sections: blade tail (101), blade middle (102), and blade head (103). Each section is printed individually using an FDM printer. Pin slots are reserved on the upper and lower surfaces of the blade tail (101), blade middle (102), and blade head (103). The printing material for the main blade is 1.75mm PLA wire, the printing layer thickness is 0.2mm, the printing shell thickness is 4mm, and the printing fill is a mesh structure with a 15% fill rate. S04: Assemble the printed leaf root (105), leaf root connecting segment (104) and main blade segment by segment; S05: Wrap fiberglass cloth around the surface of the assembled blade.

2. The method for manufacturing small blades based on 3D printing technology according to claim 1, characterized in that: The leaf root (105) is pre-reserved with a pin groove and a threaded hole for assembly with the leaf root connecting section (104) during the manufacturing process.

3. The method for manufacturing small blades based on 3D printing technology according to claim 1, characterized in that: The blade root (105) and blade root connecting section (104) are assembled using pins, hex bolts (106) and adhesive; the blade tail (101), blade middle (102) and blade head (103) are assembled using pins and adhesive.

4. The method for manufacturing small blades based on 3D printing technology according to claim 1, characterized in that: The fiber cloth of the fiberglass (107) is 1200 triaxial fiberglass cloth, and the thickness of the wrapping on the blade surface is 2mm.

5. The method for manufacturing small blades based on 3D printing technology according to claim 1, characterized in that: The leaf root (105), the leaf root connecting section (104), and the pins used between each segment of the leaf are all made of aluminum alloy.

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