TW201636128A - Method of manufacturing axial fan wheel - Google Patents

Abstract

A method of manufacturing an axial fan wheel includes steps of providing a raw material; forging the raw material by a forging process to form a semifinished product of the axial fan wheel, wherein the semifinished product of the axial fan wheel includes a hub, a plurality of axial fan blades and an excess material, the axial fan blades extend from a periphery of the hub, an angle included between a surface of each axial fan blade and a rotation axis of the hub varies gradiently, and the excess material is connected to the hub and the axial fan blades; and removing the excess material to form the axial fan wheel with the hub and the fan blades.

Description

Method for manufacturing axial flow fan wheel

The invention relates to a method for manufacturing an axial flow fan wheel, in particular to a method for manufacturing an axial flow fan wheel by a forging process.

Heat sinks are closely related to the development of electronic products. Since the current in the circuit generates unnecessary heat due to the influence of the impedance when the electronic product is in operation, if the thermal energy cannot be effectively eliminated and accumulated on the electronic components inside the electronic product, the electronic component may be raised because of the rising The temperature is damaged. Therefore, the advantages and disadvantages of the heat sink affect the operation of electronic products. At present, the most commonly used heat sink for electronic products is to connect the heat-dissipating section of the heat pipe to the heat-dissipating fins by contacting the heat-absorbing section of the heat pipe, and to dissipate heat-dissipating fins by the fan. Therefore, the fan is one of the important components in the electronic device. In the prior art, when manufacturing the fan wheel of the fan, the fan blade and the hub are separately manufactured, and then the blade and the hub are assembled. Therefore, a long processing time is required, and the assembly process increases the gap between the blade and the hub. Combine the error.

The present invention provides a method of manufacturing an axial flow fan wheel in a forging process to solve the above problems.

According to an embodiment, a method for manufacturing an axial fan wheel of the present invention comprises: providing a blank; forging a blank into an axial fan wheel semi-finished product by a forging process, wherein the axial fan wheel semi-finished product comprises a hub, a plurality of The axial fan blade and a residual material extend from the periphery of the hub, and the angle between the surface of each axial fan blade and the rotating shaft of the hub changes gradually, and the residual material is connected to the hub and the axial fan. The leaves; and the remaining material is removed to leave the hub and the axial fan blades to form an axial fan wheel.

In summary, the present invention first forms a semi-finished product of an axial flow fan wheel by a forging process, and then The material is removed from the axial fan wheel semi-finished product to obtain an axial fan wheel integrally formed by the hub and the axial fan blade. Since the invention does not need to assemble the axial fan blade and the hub, the machining time can be effectively reduced, and no joint error occurs between the axial fan blade and the hub.

The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

10‧‧‧Bullet

12, 12'‧‧‧Axial fan wheel semi-finished products

14‧‧‧Axial fan wheel

120‧‧·wheels

122‧‧‧Axial fan blades

124, 124'‧‧‧

1200‧‧‧ shaft

1220‧‧‧ surface

1240‧‧‧Base

1242‧‧‧Connecting Department

S10-S14‧‧‧Steps

Fig. 1 is a flow chart showing a method of manufacturing an axial fan wheel according to an embodiment of the present invention.

Figure 2 is a schematic diagram of the process with the first figure.

Figure 3 is a schematic diagram of another process with the first drawing.

Referring to FIG. 1 and FIG. 2, FIG. 1 is a flow chart showing a method of manufacturing an axial fan wheel according to an embodiment of the present invention, and FIG. 2 is a schematic view showing a process of the first drawing. First, step S10 is performed to provide a blank 10. In this embodiment, the billet 10 may be magnesium, aluminum, iron, titanium, magnesium alloy, aluminum alloy, iron alloy, titanium alloy or other metal or alloy that can be used in the forging process. Next, step S12 is performed to forge the blank 10 into an axial fan wheel semi-finished product 12 by a forging process. The axial fan wheel semi-finished product 12 includes a hub 120, a plurality of axial fan blades 122, and a residual material 124. As shown in FIG. 2, the axial fan blades 122 extend from the periphery of the hub 120. Since the surface 1220 of each axial fan blade 122 exhibits a particular curvature with a particular curvature, the angle of the surface 1220 of each axial fan blade 122 with the axis of rotation 1200 of the hub 120 varies in a gradient.

After forging the axial fan wheel semi-finished product 12, the residual material 124 is coupled to the hub 120 and the axial fan blade 122. In this embodiment, the residual material 124 can include a base 1240 and a plurality of connecting portions 1242 , wherein the connecting portion 1242 extends from the base 1240 and is coupled to the hub 120 and the axial fan blades 122 .

According to the present invention, a mold constituting the outer shape of the axial fan wheel semi-finished product 12 can be prepared in advance, and the blank 10 is forged by the mold to form the axial flow fan wheel semi-finished product 12. Then, step S14 is performed, The remainder 124 is removed to leave the hub 120 and the axial fan blades 122 to form an axial fan wheel 14. In this embodiment, the present invention can remove the residual material 124 in a milling process, a stamping process, or other stripping process, depending on the application.

Since the hub 120 of the axial fan wheel 14 and the axial fan blade 122 are integrally formed, the present invention does not need to assemble the axial fan blade 122 and the hub 120, which can effectively reduce the processing time, and the axial fan blade 122 There is no binding error between the hub 120 and the hub 120. In addition, since the axial fan wheel 14 is obtained by a forging process, the axial fan wheel 14 has good overall homogeneity and good surface characteristics can be obtained.

Please refer to Figure 3, and Figure 3 is a schematic diagram of another process with Figure 1. As shown in Fig. 3, the remainder 124' of the axial fan wheel blank 12' does not have the base 1240 shown in Fig. 2.

In other words, the present invention can forge the blank 10 with different forms of mold to produce axial fan wheel semi-finished products 12, 12' having different forms of residual material 124, 124'.

In summary, the present invention first forms an axial flow fan wheel semi-finished product by a forging process, and then removes the residual material from the axial flow fan wheel semi-finished product to obtain an axial flow fan wheel integrally formed by the hub and the axial flow fan blade. Since the invention does not need to assemble the axial fan blade and the hub, the machining time can be effectively reduced, and no joint error occurs between the axial fan blade and the hub.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

S10-S14‧‧‧Steps

Claims (4)

A method for manufacturing an axial fan wheel comprises: providing a blank; forging a blank into an axial fan wheel semi-finished product by a forging process, wherein the axial fan wheel semi-finished product comprises a hub and a plurality of axial fan blades And a residual material, the axial fan blades extend from the periphery of the hub, and the angle between the surface of each of the axial fan blades and the rotating shaft of the hub changes in a gradient, and the residual material is connected to the hub and the The axial flow fan blade; and the remainder is removed to leave the hub and the axial fan blades to form an axial fan wheel. The method of manufacturing an axial fan wheel according to claim 1, wherein the residual material comprises a base and a plurality of connecting portions extending from the base and connected to the hub and the axial fan blades. The method for manufacturing an axial fan wheel according to claim 1, further comprising: removing the residual material by a milling process or a stamping process. The method of manufacturing an axial fan wheel according to claim 1, wherein the billet is magnesium, aluminum, iron, titanium or an alloy thereof.