阅读说明：本技术 汽车台阶类零部件锻造模具 (Forging die for automobile step parts ) 是由 周彪 于 2020-12-29 设计创作，主要内容包括：本申请涉及汽车台阶类零部件锻造模具。本申请所述的汽车台阶类零部件锻造模具包括：上模具和下模具,所述下模具包括内壳、外壳、内套筒、垫块以及支撑柱；所述上模具放置在所述下模具上方；所述内套筒沿所述内壳的轴线套设在所述内壳内,所述内壳和所述内套筒分别抵接在所述垫块上；所述外壳分别套接在所述内壳和所述垫块的外壁；所述内套筒和所述垫块沿轴线形成有圆柱状的空腔；所述支撑柱紧固安装在所述空腔内,并且所述支撑柱的顶面置于所述内套筒的底部,使得所述空腔的顶部被分隔为型腔。本申请所述的汽车台阶类零部件锻造模具具有有效避免应力集中从而提高适用寿命的优点。(The application relates to a forging die for automobile step parts. The application automobile step class spare part forges mould include: the lower die comprises an inner shell, an outer shell, an inner sleeve, a cushion block and a supporting column; the upper die is placed above the lower die; the inner sleeve is sleeved in the inner shell along the axis of the inner shell, and the inner shell and the inner sleeve are respectively abutted against the cushion block; the outer shell is respectively sleeved on the outer walls of the inner shell and the cushion block; a cylindrical cavity is formed in the inner sleeve and the cushion block along the axis; the support post is securely mounted within the cavity and the top surface of the support post rests on the bottom of the inner sleeve such that the top of the cavity is divided into cavities. The application the automobile step class spare part forging mould have the advantage of effectively avoiding stress concentration thereby improving life.)

1. The utility model provides a car step class spare part forges mould which characterized in that: the device comprises an upper die and a lower die, wherein the lower die comprises an inner shell, an outer shell, an inner sleeve, a cushion block and a supporting column; the upper die is placed above the lower die;

the inner sleeve is sleeved in the inner shell along the axis of the inner shell, and the inner shell and the inner sleeve are respectively abutted against the cushion block; the outer shell is respectively sleeved on the outer walls of the inner shell and the cushion block;

a cylindrical cavity is formed in the inner sleeve and the cushion block along the axis;

the supporting column is fixedly installed in the cavity, and the top surface of the supporting column is placed at the bottom of the inner sleeve, so that the top of the cavity is divided into cavities;

the top surface of the inner sleeve is lower than that of the inner shell, so that the cross-sectional graph of the cavity is T-shaped; the top surface and the inner side surface of the inner sleeve are in arc transition;

the inner sleeve is made of tungsten steel, and the inner shell is made of high-speed steel.

2. The forging die for automobile step parts as claimed in claim 1, wherein: the bottom surface of the cushion block is placed on the base, and the bottom of the shell is sleeved on the outer wall of the base;

the supporting column penetrates through the base and is fixedly sleeved on the inner wall of the cavity.

3. The forging die for automobile step parts as claimed in claim 2, wherein: the inner sleeve is tubular, and the inner shell is fixedly sleeved on the outer wall of the tubular inner sleeve.

4. The forging die for automobile step parts as claimed in claim 3, wherein: the outer wall of the inner shell is a conical surface, and the top of the outer shell is a conical surface and matched with the outer wall of the inner shell.

5. The forging die for automobile step parts according to any one of claims 1 to 3, wherein: the support column is made of high-speed steel.

6. The forging die for automobile step parts as claimed in claim 5, wherein: the inner sleeve is in interference fit with the inner shell, and the inner sleeve is pressed into the inner shell;

the inner shell is in interference fit with the outer shell and is pressed into the outer shell.

7. The forging die for automobile step parts as claimed in claim 5, wherein: the top surface of the inner sleeve and the inner wall of the inner shell are in right-angle transition.

8. The forging die for automobile step parts as claimed in claim 5, wherein: the shell and the cushion block are made of high-speed steel materials respectively.

Technical Field

The application relates to a forging die, in particular to a forging die for automobile step parts.

Background

In the forging process of automobile step parts in the prior art, a plurality of outer diameter sizes exist for products, the service life of the die is short under the condition of large difference of the outer diameter sizes, the main problem points are at the stress concentration part of the die, frequent cracking and block falling occur, the product quality and product delivery are seriously influenced, and therefore the die structure in the prior art cannot avoid the problem of bringing certain product quality defects.

Disclosure of Invention

Based on this, the purpose of this application lies in, provides car step class spare part forging mould, and it has the advantage that improves the life of mould.

One aspect of the application provides a forging die for automobile step parts, which comprises an upper die and a lower die, wherein the lower die comprises an inner shell, an outer shell, an inner sleeve, a cushion block and a support column; the upper die is placed above the lower die;

the inner sleeve is sleeved in the inner shell along the axis of the inner shell, and the inner shell and the inner sleeve are respectively abutted against the cushion block; the outer shell is respectively sleeved on the outer walls of the inner shell and the cushion block;

a cylindrical cavity is formed in the inner sleeve and the cushion block along the axis;

the supporting column is fixedly installed in the cavity, and the top surface of the supporting column is placed at the bottom of the inner sleeve, so that the top of the cavity is divided into cavities;

the top surface of the inner sleeve is lower than that of the inner shell, so that the cross-sectional graph of the cavity is T-shaped; the top surface and the inner side surface of the inner sleeve are in arc transition;

the inner sleeve is made of tungsten steel, and the inner shell is made of high-speed steel.

According to the forging die for the automobile step type parts, the top surface of the inner sleeve is lower than that of the inner shell, so that the inner sleeve and the inner shell are step-shaped, and the section of a cavity is T-shaped; moreover, the inner sleeve and the inner shell are respectively abutted and placed on the cushion block, so that the support is stable, and the workpiece can be conveniently machined.

The bottom surface of the cushion block is placed on the base, and the bottom of the shell is sleeved on the outer wall of the base;

the supporting column penetrates through the base and is fixedly sleeved on the inner wall of the cavity.

Further, the inner sleeve is tubular, and the inner shell is tightly sleeved on the outer wall of the tubular inner sleeve.

Furthermore, the outer wall of the inner shell is a conical surface, and the top of the outer shell is a conical surface and matched with the outer wall of the inner shell.

Furthermore, the support columns are made of high-speed steel.

Further, the inner sleeve is in interference fit with the inner shell, and the inner sleeve is pressed into the inner shell;

the inner shell is in interference fit with the outer shell and is pressed into the outer shell.

Further, the top surface of the inner sleeve is in right-angle transition with the inner wall of the inner shell.

Further, the shell and the cushion block are made of high-speed steel materials respectively.

For a better understanding and practice, the present application is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a half-section of a lower die of an exemplary forging die for automobile step parts according to the present application;

FIG. 2 is a schematic diagram of a half-section structure of an exemplary forging die for automobile step parts.

Detailed Description

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.

FIG. 1 is a schematic view of a half-section of a lower die of an exemplary forging die for automobile step parts according to the present application; FIG. 2 is a schematic diagram of a half-section structure of an exemplary forging die for automobile step parts.

Referring to fig. 1 and 2, an exemplary forging die for automobile step-like parts includes an upper die 10 and a lower die, where the lower die includes an inner shell 22, an outer shell 25, an inner sleeve 21, a spacer 23, and a supporting pillar 26; the upper mold 10 is placed above the lower mold;

the inner sleeve 21 is sleeved in the inner shell 22 along the axis of the inner shell 22, and the inner shell 22 and the inner sleeve 21 are respectively abutted against the cushion blocks 23; the outer shell 25 is respectively sleeved on the outer walls of the inner shell 22 and the cushion block 23;

a cylindrical cavity A is formed along the axis of the inner sleeve 21 and the cushion block 23;

the supporting column 26 is tightly installed in the cavity A, and the top surface of the supporting column 26 is placed at the bottom of the inner sleeve 21, so that the top of the cavity A is divided into a cavity B;

the top surface of the inner sleeve 21 is lower than the top surface of the inner shell 22, so that the cross-sectional pattern of the cavity B is T-shaped; the top surface and the inner side surface of the inner sleeve 21 are in arc transition;

the inner sleeve 21 is made of tungsten steel, and the inner shell 22 is made of high-speed steel.

In some preferred embodiments, the device further comprises a base 24, the bottom surface of the cushion block 23 is placed on the base 24, and the bottom of the shell 25 is sleeved on the outer wall of the base 24;

the supporting column 26 penetrates through the base 24 and is tightly sleeved on the inner wall of the cavity A.

In some preferred embodiments, the inner sleeve 21 has a tubular shape, and the inner shell 22 is tightly sleeved on the outer wall of the tubular inner sleeve 21.

In some preferred embodiments, the outer wall of the inner shell 22 is tapered and the top of the outer shell 25 is tapered and mates with the outer wall of the inner shell 22.

In some preferred embodiments, the support posts 26 are of high speed steel.

In some preferred embodiments, the inner sleeve 21 is an interference fit with the inner shell 22 and presses the inner sleeve 21 into the inner shell 22;

the inner shell 22 is interference fit with the outer shell 25 and presses the inner shell 22 into the outer shell 25.

In some preferred embodiments, the top surface of the inner sleeve 21 transitions at a right angle to the inner wall of the inner shell 22.

In some preferred embodiments, the housing 25 and the spacer 23 are each made of high speed steel.

The application discloses work principle of an exemplary automobile step class spare part forging mould:

the inner sleeve 21 and the inner shell 22 are respectively arranged, and the inner sleeve 21 and the inner shell 22 are made of different materials, so that an assembly part is formed, stress of a stress concentration point is not concentrated, and the inner sleeve 21 and the inner shell 22 have good impact resistance during forging.

During forging, the upper die 10 is pressed downward, so that the die in the cavity B is formed, and finally a T-shaped workpiece is formed. In the forging process, the stress concentration of the tungsten steel structural component is dispersed, the processing durability is better, and in the forging process, the tungsten steel is not easy to generate scraps and local fragmentation any more, so that the integrity of a die is ensured, and the processing quality of a workpiece is also ensured. In this application, change original wolfram steel into the structure of the components of a whole that can function independently in this application by a holistic structure, with two kinds of material combination collocation of wolfram steel and high-speed steel, the hardness performance and the wear resistance of full play wolfram steel, the toughness of collocation high-speed steel makes the life-span of mould improve greatly simultaneously.

In the prior art, a plurality of outer diameter sizes exist for products, the service life of the die is short under the condition of large outer diameter size difference, and the main problem is that frequent cracking and block falling of tungsten steel seriously affect the product quality and product delivery. The reasons for this phenomenon are mainly as follows: 1) the chamfer angle requirement of the product is too small, so that stress points are concentrated; 2) the tungsten steel is damaged due to uneven stress caused by the acting forces in different directions in the process of extruding the product by the die to deform; 3) and the larger outer diameter of the tungsten steel is not enough to be included by the shell. The forging die for the automobile step parts can well solve the problems, and achieves the effects of prolonging the service life and improving the processing quality.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.