Modularized magnesium alloy steering wheel framework machining process method

Abstract

The invention discloses a modular magnesium alloy steering wheel framework machining process method, and relates to the technical field of steering wheel frameworks. A modular magnesium alloy steering wheel framework machining process method comprises the following steps that a steering wheel framework is divided into an outer contour module and an inner part module, the outer contour module is made of magnesium alloy extruded profiles through bending machining, the inner part module is made of magnesium alloy materials suitable for a die-casting process, and finally assembling is conducted. The outer contour of the steering wheel is made of extruded profiles, internal components are made of die castings, the modular assembly steering wheel is made, the modular design greatly reduces the die size and the die cost, the production flexibility is remarkably improved, small-batch and personalized market requirements can be quickly responded, the material management cost is reduced by utilizing the internal and external general characteristics, and the production efficiency is improved. The advantages of low density and high damping performance of magnesium alloy are fully exerted, balance of light weight and high performance of products is achieved, assembly line type operation is adopted in the assembly link, and it is guaranteed that the product quality is stable and the production efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of steering wheel skeletons, and particularly relates to a processing technology method for a modular magnesium alloy steering wheel skeleton. Background Art

[0002] At present, the steering wheel skeletons widely used in vehicles are integrally die-cast by a die-casting machine or formed by steel welding. The magnesium alloy die-casting is becoming increasingly mature and is widely used in automobiles. In particular, more than 90% of the magnesium alloy die-cast steering wheel skeletons are used in automobiles. In new energy vehicles, mainly magnesium alloy steering wheel skeletons are used because magnesium alloys have low density, high damping properties, and better cost performance, and are used more and more. However, for some vehicle models with too small sales volume, the mold amortization is too high and the price is also higher; in addition, the shapes of the steering wheels of current new vehicle models are also various. The personalized design leads to more molds being opened, and the cost is also significantly increased. Summary of the Invention

[0003] The purpose of the present invention is to provide a processing technology method for a modular magnesium alloy steering wheel skeleton, so as to solve the problems that the mold amortization is too high due to too small sales volume, and the shapes of the steering wheels of current new vehicle models are also various. The personalized design leads to more molds being opened, and the cost is also significantly increased.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A processing technology method for a modular magnesium alloy steering wheel skeleton, comprising the following steps: Dividing the steering wheel skeleton into an outer contour module and an internal component module; The outer contour module selects a magnesium alloy extrusion profile, and the magnesium alloy extrusion profile is bent according to the shaping requirements of the steering wheel. The internal component module selects a magnesium alloy material suitable for the die-casting process, and magnesium alloys with different compositions and properties are selected according to the functions and force conditions of different components. Each module is relatively independent during the production process, and finally assembled to form a complete steering wheel skeleton. In the assembly link, a pipeline-type welding method is adopted for each assembly process.

[0005] Further, for the internal component connection points and force concentration areas of the outer contour module, a design method of adding reinforcing ribs is adopted, and the shape and layout of the reinforcing ribs are designed according to mechanical analysis.

[0006] Further, the internal component module improves the forming quality and dimensional accuracy of the internal components by adjusting the die-casting temperature, pressure, and speed parameters. During the die-casting process, a semi-solid die-casting process is adopted. The beneficial effects of the present invention are as follows: In this application, an extruded profile is used for the outer contour, and die-cast parts are used for the internal components to form a modular assembled steering wheel. The modular design significantly reduces the die volume, reduces the die cost, and remarkably improves the production flexibility. It can quickly respond to the market demands of small batches and personalization. By utilizing the common characteristics inside and outside, the material management cost is reduced, and the advantages of low density and high damping of magnesium alloy are fully exerted to achieve the balance between product lightweight and high performance. The assembly process adopts a pipeline operation to ensure stable product quality and high production efficiency.

[0007] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the following will describe in detail with reference to the preferred embodiments of the present invention and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic structural diagram of the overall structure shown in an embodiment.

[0009] Figure 2 It is a schematic structural diagram of the partial connection position of the outer contour module and the internal component module shown in an embodiment.

[0010] Figure 3 It is a schematic structural diagram of the internal component module shown in an embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0012] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0013] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0014] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0015] Please refer to Figure 1 , a processing technology method for a modular magnesium alloy steering wheel skeleton shown in a preferred embodiment of the present application, includes the following steps: Divide the steering wheel skeleton into an outer contour module and an internal component module; Select a magnesium alloy extrusion profile for the outer contour module. According to the shaping requirements of the steering wheel, bend the magnesium alloy extrusion profile; Select a magnesium alloy material suitable for die-casting process for the internal component module, and select magnesium alloys with different compositions and properties according to the functions and stress conditions of different components; Each module is relatively independent during the production process, and finally assembled to form a complete steering wheel skeleton. In the assembly link, an assembly process is carried out step by step by means of an assembly line type welding method.

[0016] For the internal component connection points and stress concentration areas of the outer contour module, the design methods that can be adopted are any one of local thickening and adding reinforcing ribs. In this embodiment, the design method adopted is adding reinforcing ribs, and the shape and layout of the reinforcing ribs are designed according to mechanical analysis.

[0017] The internal component module improves the forming quality and dimensional accuracy of the internal components by adjusting the die-casting temperature, pressure, and speed parameters.

[0018] During the die-casting process of the internal component module, the die-casting can be any one of vacuum die-casting or semi-solid die-casting. In this embodiment, the design method adopted is semi-solid die-casting.

[0019] In summary, the present invention provides a processing technology method for a modular magnesium alloy steering wheel skeleton. The device uses extruded profiles for the outer contour and die-castings for the internal components to form a modular assembled steering wheel. The modular design significantly reduces the die volume, reduces the die cost, significantly improves the production flexibility, can quickly respond to the market demands of small batches and personalization, reduces the material management cost by utilizing the common characteristics inside and outside, gives full play to the advantages of low density and high damping of magnesium alloy, realizes the balance between product lightweight and high performance, and adopts a pipeline operation in the assembly link to ensure stable product quality and high production efficiency.

[0020] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

Claims

1. A modular magnesium alloy steering wheel skeleton processing method, characterized in that: The following steps are involved: Divide the steering wheel skeleton into an outer contour module and an inner component module; The outer contour module is made of magnesium alloy extruded profiles, and the outer contour module is used to bend the magnesium alloy extruded profiles according to the shape requirements of the steering wheel; Internal component modules are made of magnesium alloy materials suitable for die-casting technology. Magnesium alloys with different compositions and properties are selected according to the functions and stress conditions of different components. Each module is relatively independent during the production process and is finally assembled to form a complete steering wheel skeleton. During the assembly process, an assembly line welding method is used for each step of the assembly process.

2. A modular magnesium alloy steering wheel skeleton processing method as claimed in claim 1, characterized in that: The internal component connection points and stress concentration areas of the outer contour module are designed by adding reinforcing ribs, and the shape and layout of the reinforcing ribs are designed based on mechanical analysis.

3. A modular magnesium alloy steering wheel skeleton processing method as claimed in claim 1, characterized in that: The internal component module improves the molding quality and dimensional accuracy of the internal components by adjusting the die-casting temperature, pressure and speed parameters, and adopts a semi-solid die-casting process during the die-casting process.

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