Multidirectional die forging forming process and method for all-fiber piston rod of aircraft landing gear

Abstract

The invention relates to the technical field of multidirectional die forging, in particular to a multidirectional die forging forming process and method for an all-fiber piston rod of an aircraft landing gear. The invention discloses a multi-directional die forging forming process and method for an all-fiber piston rod of an aircraft landing gear. The multi-directional die forging forming process is characterized by comprising the specific steps of raw material detection, wherein size and performance detection is conducted on raw materials meeting purchasing requirements and specifications; preparing a blank: preparing the raw materials into the blank according to requirements; blank heating is conducted, specifically, the blank is heated; all-fiber multi-directional die forging is conducted, specifically, the heated blank is placed on a special press, die forging forming is conducted on the piston rod forging rod through a special die, and the drawing size is achieved; punching is conducted, specifically, the forge piece is subjected to punching treatment through a multi-directional die forging technology; and heat treatment after forging: heat treatment is performed according to heat treatment specifications to meet the technical requirements of drawings. Compared with the prior art, the multi-directional die forging forming process and method for the all-fiber piston rod of the aircraft landing gear break through barriers in the prior art, and manufacturing of the all-fiber hollow piston rod is achieved.

Description

Technical Field

[0001] This invention relates to the field of multi-directional die forging technology, specifically to a multi-directional die forging process and method for an aircraft landing gear all-fiber piston rod. Background Technology

[0002] The piston rod is the core moving component in the aircraft landing gear shock absorber strut (usually an OPEN-type shock absorber strut). During takeoff and landing, it is subjected to complex alternating loads such as tension, compression, bending, and torsion, especially the large impact load at the moment of landing. Therefore, it is required to have high strength and good overall performance. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this invention provides a multi-directional die forging process and method for aircraft landing gear all-fiber piston rods, breaking through existing technical barriers and realizing the manufacturing of all-fiber hollow piston rods.

[0004] To achieve the above objectives, a multi-directional die forging process and method for an aircraft landing gear all-fiber piston rod is designed, characterized by the following specific process: (1) Raw material testing: Dimensional and performance testing of raw materials that meet the procurement requirements and specifications; (2) Making blanks: Making blanks from raw materials according to requirements; (3) Billet heating: Heating the billet; (4) All-fiber multi-directional die forging: The heated billet is placed on a special press and the piston rod forging bar is die forged using a special die to achieve the dimensions shown in the drawing; (5) Punching: Punching is performed on the forgings using multi-directional die forging technology; (6) Post-forging heat treatment: Heat treatment shall be carried out in accordance with the heat treatment specifications to meet the technical requirements of the drawings.

[0005] The raw material is bar stock.

[0006] Compared with existing technologies, this invention provides a multi-directional die forging process and method for aircraft landing gear all-fiber piston rods, breaking through existing technological barriers and realizing the manufacturing of all-fiber hollow piston rods. This further ensures the supply capacity and industrial security of my country's aviation and related industries. Furthermore, in the manufacturing process of the all-fiber piston rod, the piston rod forging exhibits complete metal flow lines, excellent comprehensive performance, high production efficiency, low cost, and considerable market returns. Attached Figure Description

[0007] Fig. 1 , Fig. 2 This is a schematic diagram of the piston rod forging structure.

[0008] Fig. 3 , Fig. 4This is a schematic diagram of the hollow structure of the piston rod. Detailed Implementation

[0009] The present invention will now be further described with reference to the accompanying drawings.

[0010] The traditional manufacturing process for piston rods involves forming them using a friction press, resulting in a cross-shaped, slender piston rod. This friction press process is wasteful of materials, and the metal fibers are cut off over a large area due to the significant differences in extrusion volume across different parts.

[0011] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a multi-directional integral die forging process for aircraft landing gear piston rods, breaking through existing technological barriers and realizing the manufacturing of all-fiber hollow piston rods. This further ensures the supply capacity and industrial security of my country's aviation and related industries. Furthermore, in the manufacturing process of the all-fiber piston rod, the piston rod forging exhibits complete metal flow lines, excellent comprehensive performance, high production efficiency, low cost, and considerable market returns.

[0012] like Figs. 1 to 4 As shown, the present invention discloses a multi-directional die forging process and method for an aircraft landing gear all-fiber piston rod, the specific process of which is as follows: (1) Raw material testing: Dimensional and performance testing of raw materials that meet the procurement requirements and specifications; (2) Making blanks: Making blanks from raw materials according to requirements; (3) Billet heating: Heating the billet; (4) All-fiber multi-directional die forging: The heated billet is placed on a special press and the piston rod forging bar is die forged using a special die to achieve the dimensions shown in the drawing; (5) Punching: Punching is performed on the forgings using multi-directional die forging technology; (6) Post-forging heat treatment: Heat treatment shall be carried out in accordance with the heat treatment specifications to meet the technical requirements of the drawings.

[0013] The raw material is bar stock.

[0014] The advantages and beneficial effects of this invention are as follows: 1. The present invention provides a multi-directional die forging process and method for an aircraft landing gear all-fiber piston rod, which has high production efficiency. After the billet is heated, it is placed in a special mold, and the entire forming process is controlled by a special press, resulting in extremely high production efficiency.

[0015] 2. The present invention provides a multi-directional die forging process and method for an aircraft landing gear all-fiber piston rod. The piston rod forging is subjected to six-directional pressure during the forming process, resulting in sufficient forging deformation and intact, dense metal fibers, which greatly improves and eliminates internal defects. Furthermore, the metal fibers coincide with the direction of force, significantly improving the fatigue strength and service life of the landing gear.

[0016] 3. The present invention provides a multi-directional die forging process and method for an aircraft landing gear all-fiber piston rod, which uses a high-precision combined mold to achieve near-net-shape forming of piston rod forgings in multiple directions, resulting in high material utilization and significantly reducing manufacturing costs.

[0017] 4. The present invention provides a multi-directional die forging process and method for an aircraft landing gear all-fiber piston rod, which has a short manufacturing cycle. Due to the high material utilization rate and small machining allowance of the piston rod forging, the manufacturing cycle of the piston rod can be significantly shortened.

[0018] 6. The present invention provides a multi-directional die forging process and method for an aircraft landing gear all-fiber piston rod, which breaks through the traditional piston rod manufacturing process, improves the service performance of the landing gear, saves raw materials, reduces production costs, increases production efficiency, and realizes the mass production of key components for aircraft landing gear.

Claims

1. A multi-directional die forging process and method for an aircraft landing gear all-fiber piston rod, characterized in that: The specific process is as follows: (1) Raw material testing: Dimensional and performance testing of raw materials that meet the procurement requirements and specifications; (2) Making blanks: Making blanks from raw materials according to requirements; (3) Billet heating: Heating the billet; (4) All-fiber multi-directional die forging: The heated billet is placed on a special press and the piston rod forging bar is die forged using a special die to achieve the dimensions shown in the drawing; (5) Punching: Punching is performed on the forgings using multi-directional die forging technology; (6) Post-forging heat treatment: Heat treatment shall be carried out in accordance with the heat treatment specifications to meet the technical requirements of the drawings.

2. The multi-directional die forging process and method for an aircraft landing gear all-fiber piston rod according to claim 1, characterized in that: The raw material is bar stock.

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