阅读说明：本技术 一种汽车底盘缓冲器部件成型方法 (Forming method of automobile chassis buffer part ) 是由 顾大明 于 2021-09-26 设计创作，主要内容包括：本发明属于冲压加工技术领域,涉及一种汽车底盘缓冲器部件成型方法,包括步骤：冲定位孔、切轮廓、压弧形、打凸、卷圆、整形、切边和落料,切轮廓步骤以定位孔为基准,在加工单元范围内切出位于定位孔周边的定位部、连接于定位部外的变形部以及连接于变形部两侧的连接带,变形部包括平行关系的两个线形区和连接在两个线形区之间的块状区,线形区在背向块状区的设有弧形的凸出部,弧形的凸出距离为块状区打凸距离的50-90%,两个块状区以线形区的对半位置对称,线形区通过第一连接区连接在连接带上并通过第二连接区连接在定位部上。本方法通过让定位孔位置居中和预留打凸余量,让产品结构更加符合客户的尺寸要求,并且加快了制造效率。(The invention belongs to the technical field of stamping and processing, and relates to a method for forming a buffer part of an automobile chassis, which comprises the following steps: the method comprises the following steps of punching a positioning hole, cutting a contour, pressing an arc shape, protruding, rolling, shaping, trimming and blanking, wherein the contour cutting step uses the positioning hole as a reference, a positioning part positioned at the periphery of the positioning hole, a deformation part connected outside the positioning part and connecting bands connected to two sides of the deformation part are cut in the range of a processing unit, the deformation part comprises two linear areas in parallel relation and a block area connected between the two linear areas, the linear area is provided with an arc-shaped protruding part in a way of facing away from the block area, the arc-shaped protruding distance is 50-90% of the protruding distance of the block area, the two block areas are symmetrical in half-half positions of the linear area, and the linear area is connected to the connecting bands through a first connecting area and is connected to the positioning part through a second connecting area. The method ensures that the product structure better meets the size requirement of a customer and accelerates the manufacturing efficiency by centering the position of the positioning hole and reserving the convex allowance.)

1. A method of forming an automotive chassis bumper component, comprising the steps of:

punching a positioning hole: positioning the front end and the two sides of the metal material belt, and cutting a positioning hole in the central position of the range of the processing unit;

cutting the profile: with the positioning hole as a reference, cutting out a positioning part positioned at the periphery of the positioning hole, a deformation part connected outside the positioning part and connecting bands connected to two sides of the deformation part in the range of a processing unit, wherein the deformation part comprises two linear areas in parallel relation and a block area connected between the two linear areas, the linear areas are provided with arc-shaped protruding parts facing away from the block areas, the protruding distance of the protruding parts is 50-90% of the protruding distance of the block areas, the two block areas are symmetrical with the half-and-half positions of the linear areas, and the linear areas are connected to the connecting bands through a first connecting area and connected to the positioning part through a second connecting area;

pressing the arc shape: with the positioning hole as a reference, making the two linear areas into a wavy structure with reverse rolling in the middle and forward rolling on two sides, wherein the radiuses of the two forward rolling positions are the same, and the two block areas are at the same height;

fourthly, embossing: with the positioning holes as the reference, the two block-shaped areas are embossed to form an inward convex structure;

rolling: clamping the middle part of the linear area by taking the positioning hole as a reference, and curling the deformation part into a cylindrical structure;

shaping: taking the positioning hole as a reference, reshaping the linear area again to ensure that two tail ends of the deformation part are contacted with each other to form a product structure;

and seventh, trimming: cutting the positioning part from the product;

eighthly, blanking: and cutting off the product from the connecting belt of the metal material belt.

2. The method of forming a vehicle chassis bumper member according to claim 1, wherein: and (6) limiting the position of the metal material belt by using a plurality of synchronously lifting positioning columns, wherein the side surfaces of the positioning columns are provided with notches matched with the connecting belt.

3. The method of forming a vehicle chassis bumper member according to claim 1, wherein: the positioning hole is located at the centroid position of the deformation part.

4. The method of forming a vehicle chassis bumper member according to claim 3, wherein: the first connection region is collinear with the second connection region and both are at half-way positions of the line-shaped region.

5. The method of forming a vehicle chassis bumper member according to claim 4, wherein: the rolling support position is positioned below the first connection area and the second connection area.

Technical Field

The invention relates to the technical field of stamping, in particular to a forming method of an automobile chassis buffer part.

Background

Metal stamping is a manufacturing process that uses a metal stamping die or a series of metal stamping dies to form a sheet metal into a three-dimensional shaped workpiece. Metal stamped products are used in various industries, such as automotive and household appliances. With the diversification of product requirements, some metal stamping products have complex structures, and how to achieve the product structures required by customers with lower cost is competitive power of an enterprise.

The product 4 shown in fig. 5 is a bumper member for an automobile chassis, which is of a cylindrical structure having an incomplete side structure, and has annular portions 41 on both sides thereof, and two convex portions 42 of an arc-shaped concave structure between the two annular portions 41. The structure has longer axial distance and simple side structure, so the structure is not suitable to be manufactured by adopting a deep drawing method. The rolling method also involves the problem of how to ensure the forming accuracy of the convex part 42.

Therefore, it is necessary to design a new molding method to solve the above problems.

Disclosure of Invention

The invention mainly aims to provide a method for molding an automobile chassis buffer part, which can efficiently complete the stamping and manufacturing of the automobile chassis buffer part.

The invention realizes the purpose through the following technical scheme: a method of forming an automotive chassis bumper component comprising the steps of:

punching a positioning hole: positioning the front end and the two sides of the metal material belt, and cutting a positioning hole in the central position of the range of the processing unit;

cutting the profile: with the positioning hole as a reference, cutting out a positioning part positioned at the periphery of the positioning hole, a deformation part connected outside the positioning part and connecting bands connected to two sides of the deformation part in the range of a processing unit, wherein the deformation part comprises two linear areas in parallel relation and a block area connected between the two linear areas, the linear areas are provided with arc-shaped protruding parts facing away from the block areas, the protruding distance of the protruding parts is 50-90% of the protruding distance of the block areas, the two block areas are symmetrical with the half-and-half positions of the linear areas, and the linear areas are connected to the connecting bands through a first connecting area and connected to the positioning part through a second connecting area;

pressing the arc shape: with the positioning hole as a reference, making the two linear areas into a wavy structure with reverse rolling in the middle and forward rolling on two sides, wherein the radiuses of the two forward rolling positions are the same, and the two block areas are at the same height;

fourthly, embossing: with the positioning holes as the reference, the two block-shaped areas are embossed to form an inward convex structure;

rolling: clamping the middle part of the linear area by taking the positioning hole as a reference, and curling the deformation part into a cylindrical structure;

shaping: taking the positioning hole as a reference, reshaping the linear area again to ensure that two tail ends of the deformation part are contacted with each other to form a product structure;

and seventh, trimming: cutting the positioning part from the product;

eighthly, blanking: and cutting off the product from the connecting belt of the metal material belt.

Specifically, in the step I-VIII, the position of the metal material belt is limited by a plurality of positioning columns which are lifted synchronously, and the side surfaces of the positioning columns are provided with notches matched with the connecting belt.

Specifically, the positioning hole is located at the centroid position of the deformation portion.

Further, the first connection region and the second connection region are collinear and both are at a position half-way along the line region.

Further, the rolling support position is located below the first connection area and the second connection area.

The technical scheme of the invention has the beneficial effects that:

according to the method, the positioning hole is formed in the center of the deformed material, so that each forming part can be more accurately positioned to the position of the useful part of the material, the final structure of the product can better meet the size requirement of a customer by reserving the convex allowance, the structure can be directly formed by using a set of continuous die, and the manufacturing efficiency is improved.

Drawings

FIG. 1 is a partial structure diagram of the metal material belt after the second step;

FIG. 2 is a partial structure view of the metal tape after the third step;

FIG. 3 is a partial structural view of the metal strip after the step IV;

fig. 4 is a partial structure diagram of the metal material belt after the step of sixthly;

FIG. 5 is a perspective view of the product;

FIG. 6 is a schematic view of the progressive die processing.

Labeled as:

1-connection zone, 11-first connection zone;

2-deformation, 21-linear region, 211-bulge, 22-bulk region;

3-a positioning section, 31-a positioning hole, 32-a second connection section;

4-product, 41-annular part, 42-convex part;

5-a continuous die, 51-an arc pressing die, 52-a convex striking die, 53-a rounding die, 54-a shaping die, 55-a trimming die, 56-a blanking die and 57-a positioning column.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

Example (b):

the invention discloses a method for molding a buffer part of an automobile chassis, which comprises the following steps:

firstly, the front end and two sides of the metal material belt are positioned, and a positioning hole 31 is cut in the central position of the range of the processing unit. This positioning hole 31 is a machining reference for each subsequent process.

Using the positioning hole 31 as a reference, cutting out a positioning part 3 positioned at the periphery of the positioning hole 31, a deformation part 2 connected outside the positioning part and connecting bands 1 connected to two sides of the deformation part 2 in the range of a processing unit, wherein the deformation part 2 comprises two linear areas 21 in parallel relation and a block area 22 connected between the two linear areas 21, an arc-shaped convex part 211 is arranged on the linear area 21 back to the block area 22, the convex distance of the convex part 211 is 50-90% of the convex distance of the block area 22, the two block areas 22 are symmetrical with the half-half position of the linear area 21, and the linear area 21 is connected to the connecting band 1 through a first connecting area 11 and connected to the positioning part 3 through a second connecting area 32. In the design, the positioning part 3 is a cutting part located in the middle of the deformation part 2, the deformation part 2 can be continuously deformed to the shape of a product in subsequent processing, but in the process, the shapes and the positions of the positioning part 3 and the positioning hole 31 cannot be changed, so that the positioning part can be always used as the basis of stamping, the positioning is more accurate, and the problem of difficult positioning in the subsequent process is fully solved. As shown in fig. 1, the connecting belt 1 is two belts for keeping the unfinished materials connected for easy pulling. Because the block areas 22 are embossed, some material must be left in the linear areas 21 to compensate for the flow of material and to leave no defects in the product profile.

And thirdly, with the positioning hole 31 as a reference, the two linear areas 21 are rolled into a wave-shaped structure with reverse rolling in the middle and forward rolling on two sides, the radiuses of the two forward rolling positions are the same, and the two block areas 22 are at the same height. This step is carried out in the die 51, as shown in figures 2 and 6, which, on the one hand, acts as a prerolling and, on the other hand, leaves the material of the two blocks 22 generally still substantially parallel to the transport plane. Although the block 22 will now have some curvature, its front and back faces are substantially perpendicular to the die face to facilitate the subsequent embossing.

And fourthly, the two block areas 22 are embossed by taking the positioning holes 31 as the reference to form an inward convex structure. This step is accomplished in the embossing die 52, as shown in fig. 3 and 6. At which point the structure of the mass 22 has approached the structure of the bulge 42.

And fifthly, clamping the middle part of the line-shaped area 21 by taking the positioning hole 31 as a reference, and enabling the deformation part 2 to be curled into a cylindrical structure. This step is accomplished in the edge rolling die 53, as shown in fig. 6. The linear region 21 is now rolled into a full circle, approximating the configuration of the annular portion 41.

Sixthly, the line-shaped area 21 is reshaped again by taking the positioning hole 31 as a reference, and the two tail ends of the deformation part 2 are ensured to be contacted with each other, so that the structure of the product 4 is formed. This step is accomplished within the sizing die 54 as shown in fig. 4 and 6. This step is to release the material stress and make the structure more conformable to the product 4 structure.

Seventhly, the positioning part 3 is cut off from the product 4. This step is completed in the trimming die 55, as shown in fig. 6. Since the positioning portion 3 has already completed the positioning assistance function, it is necessary to cut the connection between the first connection region 11 and the linear region 21 and remove the positioning portion 3.

Cutting off the product 4 from the connecting band 1 of the metal material band. This step is accomplished in the blanking die 56, as shown in fig. 5 and 6. The second connecting zone 32 is now cut off from the line-shaped zone 21 so that the product 4 does not have any excess stub bar and falls off the connecting strip 1.

According to the method, each forming part can be accurately positioned to the position of a useful part of the material by arranging the positioning part 3 at the central position of the deformed material, the structure of the finally formed product 4 is more in line with the size requirement of a customer, the structure can be directly formed by using a set of continuous die 5, and the manufacturing efficiency is improved.

As shown in fig. 6, in the step (i) - (i), the position of the metal material strip is limited by a plurality of positioning columns 57 which are lifted synchronously, and the side surfaces of the positioning columns 57 are provided with notches which are matched with the connecting belt 1. The mould all can have certain stroke in the punching press of every step, in order to avoid going up the mould punching press and break connecting band 1, need rely on reference column 57 to let the metal material area can reciprocate along with the compound die action.

As shown in fig. 1 to 4, the positioning hole 31 is located at the centroid position of the deformation portion 2. The deformation part 2 is a symmetrical structure with two perpendicular symmetry axes, so the positioning hole 31 can directly determine the shape center of the deformation part 2, and the machining deformation is as accurate as possible.

As shown in fig. 1 to 4, the first connection region 11 and the second connection region 32 are collinear, and both are at the half-positions of the line-shaped region 21. The first connection region 11 and the second connection region 32 are both located at positions relatively close to the positioning hole 31, so that the problem of difficult stress release control due to too far connection positions can be avoided.

The rolling support position is located below the first connection region 11 and the second connection region 32. Only the linear area 21 is deformed obviously during the rolling process, so that the rolling punch can wrap the material only by holding at least two positions of the first connecting area 11 and the second connecting area 32, and an ideal rolling structure is obtained.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.