A stamping die for the upper part of an automobile front axle assembly

Abstract

This utility model relates to a stamping die for an upper piece of an automotive front axle assembly. The lower die has a split structure, including a central lower module and a side lower module. The central lower module is set in a mounting groove via a first positioning component. The first positioning component includes several first positioning blocks, the central axes of which are horizontally set in the mounting groove and cooperate to form a cross-shaped positioning structure. The side lower module is set in a mounting groove via a second positioning component. The second positioning component includes several second positioning blocks and a shaped positioning post. The central axes of the second positioning blocks are horizontally set in the mounting groove and cooperate to form a straight positioning structure. The central axis of the shaped positioning post is vertically set on one side of the second positioning blocks. The lower die of this utility model adopts a split structure. When the lower die wears out, it is not necessary to replace the entire lower die; only the lower module at the corresponding position needs to be replaced, thus reducing the cost of using the die.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a stamping mold for the upper part of an automobile front axle assembly. Background Technology

[0002] As a key component in the structure of the automotive front axle assembly, the forming accuracy of the upper piece directly affects the performance of the front axle assembly. The upper piece of the automotive front axle assembly has a butterfly-shaped structure with a central arch, and it is formed from sheet metal through drawing, trimming, and punching processes. Due to the complexity of the upper piece structure, during the punching process, an integral lower die matching the upper piece structure is usually installed on the lower die holder to provide positioning and support. Because the punch is prone to wear on the edges of the lower die during punching, thus affecting the punching accuracy, the entire lower die needs to be replaced frequently, significantly increasing the die usage cost.

[0003] Therefore, this utility model proposes a stamping die for the upper part of an automobile front axle assembly to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a stamping die for the upper part of the front axle assembly of an automobile, which does not require the replacement of the entire lower die when the lower die is worn, thus reducing the cost of use.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a stamping die for the upper piece of a front axle assembly of an automobile, including a lower die base and a lower die, wherein the lower die base has an installation groove that matches the shape of the lower die, and the lower die is set in the installation groove. Its innovation is that the lower die has a split structure, including a middle lower module and a side lower module. The lower central module is set in the mounting groove by a first positioning component. The first positioning component includes a plurality of first positioning blocks, the central axes of which are horizontally set in the mounting groove and cooperate to form a cross-shaped positioning structure. The side-down module is set in the mounting groove by a second positioning component. The second positioning component includes several second positioning blocks and irregularly shaped positioning columns. The central axes of the several second positioning blocks are set horizontally in the mounting groove and cooperate to form a straight positioning structure. The central axis of the irregularly shaped positioning column is set vertically on one side of the second positioning blocks.

[0006] Furthermore, the first positioning block has three parts: a horizontal positioning block and two vertical positioning blocks. The central axes of the two vertical positioning blocks are on the same straight line. The horizontal positioning block is located between the two vertical positioning blocks, and its central axis is perpendicular to the central axis of the vertical positioning blocks.

[0007] Furthermore, both the first positioning block and the second positioning block are cuboid structures with chamfered corners on both sides of the top.

[0008] Furthermore, the axial projection of the irregular positioning post is elongated, with two outwardly arched first arc-shaped contour lines at both ends of the axial projection, and two inwardly concave second arc-shaped contour lines on both sides of the middle section of the axial projection. The first and second arc-shaped contour lines cooperate to form a smooth closed contour line of the axial projection of the irregular positioning post.

[0009] Furthermore, the bottom of the irregular positioning post has several positioning cylinders, which are integrally formed with the irregular positioning post and whose central axis is parallel to the central axis of the irregular positioning post. The bottom surface of the mounting groove has several circular grooves that match the positioning cylinders one by one. Each positioning cylinder is set in the corresponding circular groove, and the bottom end face of the irregular positioning post is in contact with the bottom surface of the mounting groove.

[0010] Furthermore, one end of the irregular positioning post has a square positioning block at the bottom of its side wall, and the bottom end face of the square positioning block fits against the bottom surface of the mounting groove.

[0011] The advantages of this utility model are: The lower die of this utility model adopts a split structure, which is assembled from a central lower module and side lower modules. When the lower die wears out, it is not necessary to replace the entire lower die; only the lower module at the corresponding position needs to be replaced, thus reducing the cost of die use. Furthermore, the central lower module is positioned using a cross-shaped positioning structure during installation, achieving bidirectional constraints in the lateral and longitudinal directions to ensure circumferential symmetry. The side lower modules located around the central lower module are positioned using positioning blocks and irregularly shaped positioning posts, which can accurately limit the circumferential rotation and lateral displacement of the lower module. The geometric features of the irregularly shaped positioning posts are used to compensate for machining errors, reducing the sensitivity to tolerances and thus improving the dimensional accuracy of the assembled central lower module and side lower modules.

[0012] The first positioning block of this utility model achieves cross-shaped high-precision positioning by using a minimum number of positioning blocks through the cooperation of horizontal positioning blocks and vertical positioning blocks.

[0013] The first and second positioning blocks of this utility model are both cuboid structures with chamfered corners on both sides of the top. The structure is simple and easy to manufacture. Moreover, the chamfered design facilitates quick alignment with the lower module and avoids jamming problems caused by right-angled edges.

[0014] The profile of the irregular positioning column of this utility model is formed by two oppositely arranged outer arched first arc profile lines and two oppositely arranged inner concave second arc profile lines to form a long bar shape. This can achieve high-precision mechanical positioning with the side-down module, while improving the load distribution of the irregular positioning column, reducing local stress concentration, and improving structural stability.

[0015] The irregularly shaped positioning post of this utility model uses a positioning cylinder and a circular groove opened in the installation groove to position its installation position in the installation groove, reducing the difficulty of opening the groove in the installation groove.

[0016] The irregular positioning post of this utility model has a square positioning block designed at the bottom of one end. The square positioning block is combined with the arc structure of the irregular positioning post to form a concave-convex combination structure, which effectively enhances the positioning accuracy and stability between the post and the side-down module. Moreover, when the irregular positioning post is machined, the end face of the square positioning block can be used as the reference surface, thereby simplifying the machining process and improving the machining accuracy of the irregular positioning post surface. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of the stamping die for the upper part of the front axle assembly of an automobile according to this utility model.

[0019] Figure 2 This is a schematic diagram of the assembly of the first positioning component and the second positioning component of this utility model in the mounting groove.

[0020] Figure 3 This is an enlarged view of section A of this utility model. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] Example This embodiment provides a stamping die for the upper sheet of an automotive front axle assembly, such as... Figure 1-3 As shown, it includes a lower mold base 1 and a lower mold 2. The lower mold base 1 has a mounting groove 101 that matches the shape of the lower mold 2. The lower mold 2 is set in the mounting groove 101. The lower mold 2 has a split structure, including a central lower module 201 and two side lower modules 202. The two side lower modules are respectively set on both sides of the central lower module 201.

[0023] The lower central module 201 is set in the mounting groove 101 by a first positioning component and is fixedly connected to the lower mold base 1 by a first bolt. The first positioning component includes three first positioning blocks 3, namely a transverse positioning block and two longitudinal positioning blocks. The central axes of the three first positioning blocks 3 are set horizontally in the mounting groove. The central axes of the two longitudinal positioning blocks are on the same straight line. The transverse positioning block is set between the two longitudinal positioning blocks, and its central axis is perpendicular to the central axis of the longitudinal positioning blocks. The three first positioning blocks 3 cooperate to form a cross-shaped positioning structure. A cross-shaped positioning groove is opened on the bottom surface of the mounting groove 101. The three first positioning blocks 3 are fixed in the cross-shaped positioning groove by a second bolt. The top of the three first positioning blocks extends out of the cross-shaped positioning groove. When the lower central module is installed in the mounting groove 101, the top of the three first positioning blocks extends into the corresponding positioning groove on the bottom surface of the lower central module 201.

[0024] The side-down module 202 is set in the mounting groove by a second positioning component. The second positioning component includes two second positioning blocks 4 and an irregularly shaped positioning post 5. The central axis of the two second positioning blocks 4 is horizontally set in the mounting groove 101 and they cooperate to form a straight positioning structure. Two waist-shaped positioning grooves corresponding to the second positioning blocks are opened on the bottom surface of the mounting groove 101. The two second positioning blocks 4 are respectively fixed in the corresponding waist-shaped positioning grooves by a third bolt. The top of the second positioning block 4 extends out of the waist-shaped positioning groove. When the middle lower module 201 is installed in the mounting groove 101, the top of the second positioning block 4 extends into the positioning groove at the corresponding position on the bottom surface of the middle lower module 201.

[0025] In this embodiment, both the first positioning block 3 and the second positioning block 4 are cuboid structures with chamfered corners on both sides of the top. The structure is simple and easy to manufacture. Moreover, the chamfered design facilitates quick alignment with the lower module and avoids jamming problems caused by right-angled edges.

[0026] The irregularly shaped positioning post 5 is vertically positioned on one side of the second positioning block 4. The axial projection of the irregularly shaped positioning post 5 is elongated. At both ends of the axial projection, there are two outwardly arched first arc-shaped contour lines. On both sides of the middle section of the axial projection, there are two inwardly concave second arc-shaped contour lines. These first and second arc-shaped contour lines combine to form a smooth, closed contour line of the axial projection of the irregularly shaped positioning post 5. The bottom of the irregularly shaped positioning post 5 has two positioning cylinders 502. The positioning cylinders 502 are integrally formed with the irregularly shaped positioning post 5, and their central axes are parallel to the central axis of the irregularly shaped positioning post 5. The bottom surface of the mounting groove 101 has two circular grooves that match the positioning cylinders 502 one-to-one. Each positioning cylinder 502 is positioned within its corresponding circular groove, and the bottom end face of the irregularly shaped positioning post 5 is in contact with the bottom surface of the mounting groove 101. One end of the irregular positioning post 5 has a square positioning block 501 at its bottom sidewall. The square positioning block 501 is integrally formed with the irregular positioning post 5. The sidewall of the square positioning block 501 is vertically arranged, and the bottom end face of the square positioning block 501 fits against the bottom surface of the mounting groove 101. The square positioning block 501 and the arc-shaped structure of the irregular positioning post 5 combine to form a concave-convex combination structure, which effectively enhances the positioning accuracy and stability with the side-down module 202. Moreover, when machining the irregular positioning post 5, the end face of the square positioning block 501 can be used as a reference surface, thereby simplifying the machining process and improving the machining accuracy of the irregular positioning post 5.

[0027] The lower die 2 of the stamping die adopts a split structure, which is assembled from the middle lower module 201 and the side lower module 202. When the lower die 2 is worn, it is not necessary to replace the entire lower die 2, but only the lower module at the corresponding position needs to be replaced, which reduces the cost of die use. In addition, the lower module located in the middle is positioned using a cross-shaped positioning structure during installation to achieve bidirectional constraints in the lateral and longitudinal directions and ensure circumferential symmetry. The side lower modules located around the middle lower module are positioned using positioning blocks and irregular positioning posts, which can accurately limit the circumferential rotation and lateral displacement of the lower module. The geometric features of the irregular positioning posts are used to compensate for machining errors and reduce the sensitivity to tolerances, thereby improving the dimensional accuracy of the middle lower module and the side lower modules after assembly.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A stamping die for an upper piece of an automotive front axle assembly, comprising a lower die base and a lower die, wherein the lower die base has a mounting groove that matches the shape of the lower die, and the lower die is disposed within the mounting groove, characterized in that: The lower mold has a split structure, including a central lower module and a side lower module; The lower central module is set in the mounting groove by a first positioning component. The first positioning component includes a plurality of first positioning blocks, the central axes of which are horizontally set in the mounting groove and cooperate to form a cross-shaped positioning structure. The side-down module is set in the mounting groove by a second positioning component. The second positioning component includes several second positioning blocks and irregularly shaped positioning columns. The central axes of the several second positioning blocks are set horizontally in the mounting groove and cooperate to form a straight positioning structure. The central axis of the irregularly shaped positioning column is set vertically on one side of the second positioning blocks.

2. The stamping die for the upper part of the automotive front axle assembly according to claim 1, characterized in that: The first positioning block has three parts: a horizontal positioning block and two vertical positioning blocks. The central axes of the two vertical positioning blocks are on the same straight line. The horizontal positioning block is located between the two vertical positioning blocks, and its central axis is perpendicular to the central axis of the vertical positioning blocks.

3. The stamping die for the upper plate of the automotive front axle assembly according to claim 1, characterized in that: Both the first positioning block and the second positioning block are cuboid structures with chamfered corners on both sides of the top.

4. The stamping die for the upper part of the automotive front axle assembly according to claim 1, characterized in that: The axial projection of the irregularly shaped positioning post is elongated. The two ends of the axial projection of the irregularly shaped positioning post have two outwardly arched first arc-shaped contour lines, and the two sides of the middle section of the axial projection of the irregularly shaped positioning post have two inwardly concave second arc-shaped contour lines. The first arc-shaped contour lines and the second arc-shaped contour lines cooperate to form a smooth closed contour line of the axial projection of the irregularly shaped positioning post.

5. The stamping die for the upper part of the automotive front axle assembly according to claim 4, characterized in that: The bottom of the irregular positioning post has several positioning cylinders, which are integrally formed with the irregular positioning post and whose central axis is parallel to the central axis of the irregular positioning post. The bottom surface of the mounting groove has several circular grooves that match the positioning cylinders one by one. Each positioning cylinder is set in the corresponding circular groove, and the bottom end face of the irregular positioning post is in contact with the bottom surface of the mounting groove.

6. The stamping die for the upper plate of the automotive front axle assembly according to claim 5, characterized in that: The bottom of one side wall of the irregularly shaped positioning post has a square positioning block, and the bottom end face of the square positioning block fits into the bottom surface of the mounting groove.

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