How to make a car wheel carrier

Abstract

The present invention provides a method for manufacturing an automobile wheel carrier, characterized by comprising: a step of preparing a steel plate of a certain thickness as a raw material; a blanking step of cutting the steel plate to match the external shape of a wheel carrier product; a first piercing step of cutting the central part of the steel plate to form a hub hole to which a hub bearing is coupled; a forging step of forging the steel plate with a press to form a spacer to which a spindle is assembled around the hub hole and a spindle plate to which a caliper is assembled at the edge, and to create a step difference between them; a second piercing step of forming a coupling hole in the spindle plate; a trimming step of cutting to trim the external shape of the spindle plate; a shaving step of cutting to trim the inner side of the spacer; a restriking step of correcting the overall shape of the spacer and the spindle plate; and a groove machining step of forming a groove in a vertical direction to mount a sensor on the inner part of the spacer.

Description

Technology Field

[0001] The present invention relates to a method for manufacturing an automobile wheel carrier, and more specifically, to a manufacturing process that enables the wheel carrier to be manufactured by press forging. Background Technology

[0002] The wheel carrier is a core component that supports the vehicle's wheels and transmits the vehicle's weight to them. It also improves ride comfort by mitigating shocks and vibrations applied to the wheels and is equipped with sensors for monitoring the vehicle's driving status and optimizing driving performance.

[0003] In addition, it is a functional component that requires sufficient strength to support the weight of the vehicle body, lightweighting for improved fuel efficiency, and precision shape technology for sensor mounting.

[0004] Figure 1 is an example diagram showing the combination of a conventional wheel carrier.

[0005] Referring to FIG. 1, conventionally, a spacer (10) equipped with a wheel speed sensor and coupled with a wheel alignment, and a spindle plate (20) coupled with a caliper were each manufactured and coupled by mutual pin assembly.

[0006] Therefore, since two mutual parts are manufactured and combined, there have been problems such as increased weight, higher manufacturing costs, and reduced productivity of the wheel carrier. Prior art literature

[0007] KR 20-1997-00233315 U "Spare wheel carrier assembly"KR 10-2017-0007025 A " Structure of a wheel carrier for an automobile rear wheel" The problem to be solved

[0008] To solve the above-mentioned problems, the present invention aims to provide a press method that enables the wheel carrier to be manufactured as a single unit, is lighter than conventional methods, and simplifies the manufacturing process. means of solving the problem

[0009] To solve the above-mentioned problem, the present invention provides a method for manufacturing an automobile wheel carrier, characterized by comprising: a step of preparing a steel plate of a certain thickness as a raw material; a blanking step of cutting the steel plate to match the external shape of a wheel carrier product; a first piercing step of cutting the central part of the steel plate to form a hub hole to which a hub bearing is coupled; a forging step of forging the steel plate with a press to form a spacer to which a spindle is assembled around the hub hole and a spindle plate to which a caliper is assembled at the edge, and to create a step difference between them; a second piercing step of forming a coupling hole in the spindle plate; a trimming step of cutting to trim the external shape of the spindle plate; a shaving step of cutting to trim the inner side of the spacer; a restriking step of correcting the overall shape of the spacer and the spindle plate; and a groove machining step of forming a groove in a vertical direction to mount a sensor on the inner part of the spacer.

[0010] In the above posing step, the steel plate is characterized by being formed such that one side of the spacer is engraved and the other side is embossed with respect to the spindle plate.

[0011] The above groove processing step is characterized by the groove being formed on one side of the spacer. Effects of the invention

[0012] According to the above solution, the following effects can be expected.

[0013] Since the wheel carrier is manufactured as a single unit by applying the shaving method with a press machine, the number of parts is reduced and the labor cost is reduced, allowing for a significant reduction in manufacturing costs.

[0014] In addition, by applying a high-precision press method to high-strength thick plate material (HR380 / 13.5t), it is possible to achieve improved strength and reduced weight of the part. Brief explanation of the drawing

[0015] Figure 1 is an example diagram showing the combination of a conventional wheel carrier. FIG. 2 is an exemplary front view of an automobile wheel carrier according to an embodiment of the present invention. FIG. 3 is an exemplary view of a car wheel carrier according to an embodiment of the present invention, seen from the rear. Figure 4 is a figure showing a cross-sectional view of Figure 2. FIG. 5 is a process flowchart of an automobile wheel carrier according to an embodiment of the present invention. FIG. 6 is an example diagram of the manufacturing process sequence of an automobile wheel carrier according to an embodiment of the present invention. FIG. 7 is an example diagram of the machining of the "R" portion of an automobile wheel carrier according to an embodiment of the present invention. Specific details for implementing the invention

[0016] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. The following description and the accompanying drawings are provided for the general understanding of the present invention and are not intended to limit the technical scope of the present invention. Furthermore, detailed descriptions of known configurations and functions that could unnecessarily obscure the essence of the present invention will be omitted.

[0017] FIG. 2 is an exemplary view of an automobile wheel carrier according to an embodiment of the present invention, viewed from the front. FIG. 3 is an exemplary view of an automobile wheel carrier according to an embodiment of the present invention, viewed from the rear. FIG. 4 is a cross-sectional view of FIG. 2.

[0018] Referring to FIGS. 2 to 4, the automobile wheel carrier in the present invention is characterized by having a spacer (120) to which the hub hole (110) of the automobile is coupled and a spindle plate (140) formed integrally. FIG. 2 is an example viewed from the front, in which the spacer (120) is in a protruding shape relative to the spindle plate (140), and FIG. 3 is an example viewed from the rear, in which the spacer (120) is in a recessed shape relative to the spindle plate (140).

[0019] FIG. 5 is a process flowchart of an automobile wheel carrier according to an embodiment of the present invention. FIG. 6 is an example diagram of manufacturing according to the process sequence of an automobile wheel carrier according to an embodiment of the present invention.

[0020] First, the preliminary step (OP00) involves preparing a steel plate of a certain thickness as the raw material. The material used for the steel plate is (HR380 / 13.5t).

[0021] Step 1 (OP10) is a blanking (BL) step in which the above steel plate is cut by a press to form the overall shape of the wheel carrier product.

[0022] Step 2 (OP20) is a step of primary piercing (PI) to form a hub hole into which a hub bearing is coupled by cutting the center of the blanked steel plate into a circular shape with a press.

[0023] And before the forging of the 3rd stage (OP30), the steel plate undergoes a heat treatment step (OP21) to preheat.

[0024] Step 3 (OP30) is a step of forging the pierced steel plate with a press to form a spacer around the hub hole that is assembled with the spindle and a spindle plate at the edge that is assembled with the caliper, and to form a step difference between them.

[0025] Step 4 (OP40) is a secondary piercing (PI) step for forming a coupling hole in the spindle plate. Here, the coupling hole is a hole for coupling with the lower part of the vehicle body.

[0026] Step 5 (OP50) is a trimming (TR) step for cutting to trim the shape of the spindle plate.

[0027] Step 6 (OP60) is a shaving (SHAV'G) step of cutting to trim the inner side of the spacer.

[0028] Step 7 (OP70) is a restriking step that corrects (REST) ​​the overall shape of the spacer and spindle plate.

[0029] Step 8 (OP80) is a groove machining step for forming a groove in the vertical direction so that a sensor can be mounted on the inner part of the spacer. Here, it is indicated as "R" part machining.

[0030] Before step 8 (OP80), a finishing operation (OP71) to trim the outer surface by hand may also be performed.

[0031] FIG. 7 is an example diagram of the processing of the "R" portion of an automobile wheel carrier according to an embodiment of the present invention.

[0032] As shown in FIG. 7, the wheel carrier of the present invention is fixed to the lower part by a dedicated processing machine for the "R" shaped part, and an "R" shaped groove (160) is processed. The reason for processing the "R" shape with a dedicated processing machine in this way is that vertical processing of the "R" shaped part is necessary because volume accumulation occurs during the press forging process.

[0033] As described above, it can be seen that the present invention is based on the basic technical concept of a method for manufacturing an automobile wheel carrier, and within the scope of such basic concept of the present invention, it is obvious that many other variations are possible for those skilled in the art. Explanation of the symbols

[0034] 100: Car wheel carrier 110: Hub hole 120: Spacer 122: Spindle Assembly 140: Spindle Plate 142: Caliper Assembly 150: Wheel speed sensor assembly 160: Home

Claims

Claim 1 A method for manufacturing an automobile wheel carrier, characterized by comprising: a step of preparing a steel plate of a certain thickness as a raw material; a blanking step of cutting the steel plate to match the external shape of a wheel carrier product; a first piercing step of cutting the central part of the steel plate to form a hub hole to which a hub bearing is coupled; a forging step of forging the steel plate with a press to form a spacer to which a spindle is assembled around the hub hole and a spindle plate to which a caliper is assembled at the edge, with a step difference between them; a second piercing step of forming a coupling hole in the spindle plate; a trimming step of cutting to trim the external shape of the spindle plate; a shaving step of cutting to trim the inner side of the spacer; a restriking step of correcting the overall shape of the spacer and the spindle plate; and a groove machining step of forming a groove in a vertical direction to mount a sensor on the inner part of the spacer. Claim 2 A method for manufacturing an automobile wheel carrier according to claim 1, wherein in the posing step, the steel plate is formed such that one side of the spacer is engraved and the other side is embossed based on the spindle plate. Claim 3 A method for manufacturing an automobile wheel carrier according to paragraph 2, wherein in the groove processing step, the groove is formed on one side of the spacer.

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