Rapid forming die for large flange of high-power wind power main shaft

Abstract

The utility model relates to a rapid forming die for a large flange of a high-power wind power main shaft, which comprises a die main body, the middle part of the die main body is coaxially provided with a large-diameter taper hole and a small-diameter taper hole, and the large-diameter taper hole is communicated with the small-diameter taper hole; a positioning groove is coaxially formed in the side, close to the large-diameter taper hole, of the die body. Compared with a conventional main shaft flange integral forming die, the main shaft flange integral forming die has the advantages that a flange cavity is omitted, but the taper hole cavity in the middle is reserved, so that fan main shafts with the same shaft body spigot size and different flange diameters can share the same die, and the die cost can be saved on the premise of ensuring rapid forming of the flanges.

Description

Technical Field

[0001] The utility model relates to the field of wind turbine main shaft forging, in particular to a large flange rapid prototyping die for a high-power wind turbine main shaft. Background Art

[0002] The fan main shaft can be designed with different specifications and sizes according to the actual application requirements. The dimensions of the stop of the main shaft body of most types are the same, but the diameters of the flanges at the ends are different and vary greatly. The existing main shaft flanges are forged in one piece through a die, and finally processed to obtain the finished product. For the same size main shaft, the molding requirements of flanges of different sizes require new molds to meet production needs, which means that in order to meet the molding requirements of flanges of different specifications, corresponding molds need to be made before production, which increases the production cost and the time for making molds. Utility Model Content

[0003] The utility model aims to provide a rapid prototyping die for a large flange of a high-power wind turbine main shaft, which can improve die utilization and reduce production costs.

[0004] In order to achieve the above-mentioned utility model object, the utility model provides a large-flange rapid prototyping mold for a large-power wind turbine main shaft, comprising a mold body, wherein a large-diameter tapered hole and a small-diameter tapered hole are coaxially arranged in the middle of the mold body, and the large-diameter tapered hole is connected to the small-diameter tapered hole;

[0005] A positioning groove is coaxially provided on one side of the mold body close to the large-diameter tapered hole.

[0006] As a further improvement of the utility model, the junction between the end surface of the large-diameter tapered hole and the end surface of the small-diameter tapered hole and the mold body is a transition arc surface.

[0007] As a further improvement of the utility model, the side wall of the mold body is provided with a groove step.

[0008] The utility model discloses a rapid prototyping die for a large flange of a high-power wind turbine main shaft. After the steel ingot is subjected to upsetting and forging, it is ejected into the main body of the die. The large-diameter tapered hole and the small-diameter tapered hole are shaft end cavities for the main shaft molding. The flange end of the main shaft is molded on one side of the large-diameter tapered hole. The positioning groove is used to position the steel ingot blank. When the large flange is upset, the upsetting is stopped when the material reaches the positioning groove, which is convenient for positioning the molding of the flange. After the main shaft and the flange are molded, they are demolded and rolled to obtain a molded blank. Since the sizes of the wind turbine main shafts are basically the same, if the diameter of the integrally molded flange to be processed is small, the diameter of the positioning groove can be reduced by directly modifying the main body of the die, thereby adjusting the flange molding positioning position.

[0009] Compared with the prior art, the utility model has the following advantages for a large flange rapid prototyping die for a high-power wind turbine main shaft:

[0010] Compared with the conventional spindle flange integrated molding mold, the flange cavity is cancelled, but the middle tapered hole cavity is retained, so that the fan spindles with the same shaft stop size but different flange diameters can use the same mold, which can save mold costs while ensuring rapid flange molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of a rapid prototyping mold structure for a large flange of a high-power wind turbine main shaft according to the utility model;

[0012] Figure 2 This is a partially enlarged view of a rapid prototyping mold for a large flange of a high-power wind turbine main shaft according to the utility model. DETAILED DESCRIPTION

[0013] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0014] like Figure 1 As shown, a large-flange rapid prototyping mold for a large-power wind turbine main shaft of the utility model comprises a mold body 1, a large-diameter tapered hole 2 and a small-diameter tapered hole 3 are coaxially arranged in the middle of the mold body 1, and the large-diameter tapered hole 2 is connected to the small-diameter tapered hole 3;

[0015] A positioning groove 11 is coaxially provided on one side of the mold body 1 close to the large-diameter tapered hole 2 .

[0016] The utility model discloses a rapid prototyping die for a large flange of a high-power wind turbine main shaft. After the steel ingot is subjected to upsetting and forging, it is ejected into a die main body 1. The large-diameter tapered hole 2 and the small-diameter tapered hole 3 are shaft end cavities for the molding of the main shaft. The flange end of the main shaft is molded on one side of the large-diameter tapered hole 2. The positioning groove 11 is used to position the steel ingot blank. When the large flange is upset, the upsetting is stopped when the material reaches the positioning groove 11, so as to facilitate the molding of the positioning flange. After the main shaft and the flange are molded, they are demolded and rolled to obtain a molded blank. Since the sizes of the wind turbine main shafts are basically the same, if the diameter of the integrally molded flange to be processed is small, the mold main body 1 can be directly modified to reduce the diameter of the positioning groove 11, thereby adjusting the flange molding positioning position.

[0017] The large diameter tapered hole 2 and the small diameter tapered hole 3 are coaxially arranged with the outer diameter of the mold body 1, which can effectively prevent the flange end from being eccentric with the small foot end of the wind turbine main shaft, and the large flange molding does not require the mold to be replaced.

[0018] like Figure 2 As shown, the junction between the end faces of the large-diameter tapered hole 2 and the small-diameter tapered hole 3 and the mold body 1 is a transition arc surface 13, which prevents the blank from covering the mold and ensures that the metal fiber is not damaged.

[0019] The side wall of the mold body 1 is provided with a groove step 12, so that when demoulding, a crane or an operating machine clamps the mold body 1 through the groove step 12 to avoid slipping.

[0020] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope defined by the claims of this application.

Claims

1. A rapid prototyping die for a large flange of a high-power wind turbine main shaft, characterized in that: It comprises a mold body, wherein a large-diameter tapered hole and a small-diameter tapered hole are coaxially arranged in the middle of the mold body, and the large-diameter tapered hole is connected with the small-diameter tapered hole; A positioning groove is coaxially provided on one side of the mold body close to the large-diameter tapered hole.

2. A rapid prototyping die for a large flange of a high-power wind turbine main shaft as claimed in claim 1, characterized in that: The junctions between the end surface of the large-diameter tapered hole and the end surface of the small-diameter tapered hole and the mold body are transition arc surfaces.

3. A rapid prototyping die for a large flange of a high-power wind turbine main shaft as claimed in claim 1, characterized in that: The side wall of the mold body is provided with a groove step.

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