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Press-moulded article manufacturing method and vehicle lower arm

一种制造方法、成型品的技术，应用在装在枢轴上的悬臂、车辆部件、运输和包装等方向

Active Publication Date: 2016-11-23
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are cases where the depth of the groove is constant without inclining the bottom surface of the groove.

Method used

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  • Press-moulded article manufacturing method and vehicle lower arm
  • Press-moulded article manufacturing method and vehicle lower arm
  • Press-moulded article manufacturing method and vehicle lower arm

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0097] Figure 9A ~ Figure 9C It is a perspective view explaining an example of the manufacturing process of the manufacturing method of 1st Embodiment about the press-formed product formed as a lower arm. in these pictures Figure 9A Indicates the shape of the raw metal plate. Figure 9B Shows the shape of the metal plate after the first step. Figure 9C Shows the shape of the press-formed product obtained through the second step. The manufacturing method of the first embodiment is to manufacture figure 1 The case of the press-formed product 10 of the first example shown is the object. Such as figure 1 and Figure 9C As shown, the groove portion 15 of the press-formed product 10 is provided only in the area of ​​the surface of the top plate portion 13a of the main body portion 11 closer to the first end portion (end portion for vehicle body attachment) 11a than the base of the protrusion portion 12 . Additionally, in order to get Figure 9C The press-formed product 10...

no. 2 Embodiment approach

[0115] Figure 11A ~ Figure 11C It is a perspective view explaining an example of the manufacturing process of the manufacturing method of 2nd Embodiment about the press-formed product formed as a lower arm. in these pictures Figure 11A Indicates the shape of the raw metal plate. Figure 11B Shows the shape of the metal plate after the first step. Figure 11C Shows the shape of the press-formed product obtained through the second step. Figure 12 It is a perspective view which schematically shows the shape example of the mold used in the 1st process of the manufacturing method of 2nd Embodiment. The manufacturing method of the second embodiment is to manufacture figure 2 The case of the press-formed product 10 of the second example shown is the object. Such as figure 2 and Figure 11C As shown, the groove portion 15 of the press-formed product 10 is provided on the surface of the top plate portion 13a of the main body portion 11 from the first end portion (the end po...

Embodiment 1

[0147] In the test of Example 1, in order to confirm the effect of the first embodiment, the figure 1 A press-formed product having the shape of the first example shown. In this press-formed product, the groove portion is provided only in the region of the surface of the top plate portion of the main body portion on the side of the first end portion. At this time, the raw material metal plate was a high-tensile steel plate having a plate thickness of 2.6 mm and a tensile strength of 980 MPa class.

[0148] In Example 1 of the present invention, using the Figure 10 and Figure 6 die shown, using the Figure 9A and Figure 9B shown in the 1st process as well as the Figure 9B and Figure 9C In the second step shown, press work is performed on the raw material metal plate.

[0149] On the other hand, in Conventional Example 1, using the Figure 5 and Figure 6 die shown, using the Figure 3A and Figure 3B shown in the 1st process as well as the Figure 3B and Figu...

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PUM

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Abstract

A press-moulded article (10) which includes: a body section (11) that has a first end section (11a) and a second end section (11b) respectively at both ends thereof; and a protruding section (12) which projects from a curved section of the body section (11) and at the curve outer side. A groove section (15) in a region at the first end section (11a) side from the root of the protruding section (12) is provided on the surface of a top plate section (13a) of the body section (11). A first longitudinal wall section (14a) which extends from the first end section (11a) of the body section (11) to the protruding section (12) has a corner section (16) which links the body section (11) and the protruding section (12). The angle formed by a portion from the corner section (16) towards the body section (11) and a portion from the corner section (16) towards the protruding part (12) is an acute angle. A method for manufacturing the press-moulded article (10) includes: a first step in which the first longitudinal wall section (14a) is further moulded without moulding the shape of the groove section (15) within the surface shape of the top plate section (13a); and a second step in which the shape of the groove section (15) is moulded within the surface shape of the top plate section (13a).

Description

technical field [0001] The present invention relates to a method of manufacturing a stamped product (eg, a lower arm for an automobile) from a raw material metal plate by stamping. Furthermore, the present invention also relates to a lower arm for an automobile (hereinafter also simply referred to as a "lower arm") manufactured by the manufacturing method. Background technique [0002] In a car, the wheels are mounted on the body of the car by means of a suspension device (suspension). One of the members constituting the suspension device is the lower arm. One end of the lower arm is attached to the vehicle body via a suspension frame (specifically, a suspension member). A wheel (specifically, a steering wheel) is attached to the other end of the lower arm. From the perspective of light weight, it is desirable to use a stamped product for the lower arm. [0003] figure 1 and figure 2 It is a perspective view schematically showing a shape example of a press-formed prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/26B60G7/00
CPCB21D22/26B21D53/88B60G7/001B60G2206/0122B60G2206/122B60G2206/722B60G2206/8102B60G2206/8103B60G2206/81035
Inventor 伊藤泰弘
Owner NIPPON STEEL CORP
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