CN113333558A

CN113333558A - Method for reducing rebound deformation rate of stamping part

Info

Publication number: CN113333558A
Application number: CN202110658917.0A
Authority: CN
Inventors: 梅保胜
Original assignee: FUJIAN DEXING ENERGY CONSERVATION TECHNOLOGY CO LTD
Current assignee: FUJIAN DEXING ENERGY CONSERVATION TECHNOLOGY CO LTD
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-09-03

Abstract

The invention relates to the technical field of metal plastic deformation processing, and particularly discloses a method for reducing the rebound deformation rate of a stamping part, which comprises the stamping part, a blank and a notch; the stamping part is formed by processing a blank and corresponding stamping equipment, and the notch is formed in the surface of the blank; the flatness of the stamping part is adjusted by adjusting the processing parameters of the notches on the surface of the blank, so that the stamping part deforms, absorbs energy or changes the impact direction according to the design requirement, the impact energy is reduced, and the damage to an object to be protected is reduced.

Description

Method for reducing rebound deformation rate of stamping part

Technical Field

The invention relates to the technical field of metal plastic deformation processing, in particular to a method for reducing the rebound deformation rate of a stamping part.

Background

The stamping part is a general name of plastic deformation processing products such as metal plate edge folding, drawing (also called drawing), stamping, bulging and the like. The stamping part can generate rebound deformation under the action of stress, and the unevenness of a product is increased.

For precision products, the rebound deformation of the stamping part can increase the occupied extra space of the products and influence some functions of equipment, and the problem to be solved is urgent. In order to solve the problem, the prior art tries to improve the processing method to a certain extent, but the problems of complex mold design, low production efficiency, small application range, large rebound deformation rate and the like exist.

Therefore, a simple and general machining process for reducing the rebound deformation rate of the stamping part is urgently needed to solve the problems.

Disclosure of Invention

The invention aims to provide a method for reducing the rebound deformation rate of a stamping part, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a method for reducing the rebound deformation rate of a stamping part comprises the steps of stamping part, blank and notching; the stamping part is formed by processing a blank and corresponding stamping equipment, and the notch is formed in the surface of the blank; the flatness of the stamping part is adjusted by adjusting the processing parameters of the notches on the surface of the blank, so that the stamping part deforms, absorbs energy or changes the impact direction according to the design requirement, the impact energy is reduced, and the damage to an object to be protected is reduced.

As a preferable scheme of the present invention, at least one surface of each blank is provided with a notch, and the notch is used for blocking a stress transmission channel inside a material.

As a preferred aspect of the present invention, the processing parameters of the notch include, but are not limited to, processing angle, depth, width, shape and number of the notch.

As a preferable scheme of the present invention, the notch groove is processed with a low strength region for preferentially generating collapse and absorbing energy.

In a preferred embodiment of the present invention, the notch is machined with a collapse angle for changing the impact direction, reducing the impact acceleration, and improving the protection of important objects.

As a preferred aspect of the present invention, when the bending angle of the stamping part is 90 °, a plurality of notches are machined at intervals on the surface of the blank, the machining angle of the notch is preferably 45 °, the notches are machined longitudinally on the longitudinal surface and the horizontal surface of the blank, and the plurality of notches are distributed along the horizontal direction of the bending position of the stamping part.

As a preferred embodiment of the present invention, when the bending angle of the stamping part is 90 °, the surface of the blank is machined with a plurality of notches at intervals from top to bottom, the machining angle of the notches is preferably 180 °, and the plurality of notches are machined horizontally on the longitudinal plane and the horizontal plane of the blank.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the method for reducing the rebound deformation rate of the stamping part, when the stamping part has the function of protecting important protection objects such as personnel in an automobile, the stamping part can be deformed, absorb energy or change the impact direction according to the design requirement by adjusting the angle, the depth, the width and the shape of the groove on the surface of the blank, so that the impact energy is reduced, and the harm to the important protection objects is reduced.

2. The method for reducing the rebound deformation rate of the stamping part can improve the dimensional precision of the precision stamping part, reduce the design difficulty of the die, reduce the stamping pressure and the pressure maintaining time of a non-precision stamping part and improve the production efficiency, and the method for notching the surface of the stamping blank is simple and can be used for batch processing.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 4 of the present invention;

FIG. 2 is a schematic diagram of a portion of FIG. 1 according to the present invention;

FIG. 3 is a schematic structural diagram of embodiment 5 of the present invention;

FIG. 4 is a partial detailed structural schematic view of FIG. 3 according to the present invention;

FIG. 5 is a schematic structural diagram of embodiment 6 of the present invention;

FIG. 6 is a detailed structural diagram of the portion A of FIG. 5 according to the present invention;

fig. 7 is a schematic diagram showing a specific structure of the blank notching according to embodiment 6 of the present invention.

In the figure: 1. a blank; 2. and (6) grooving.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Any one embodiment of the present invention will be described in conjunction with the accompanying drawings 1-7 for further explanation:

example 1: a method for reducing the rebound deformation rate of a stamping part comprises the steps of stamping the part, a blank 1 and a notch 2; the stamping part is formed by processing a blank 1 and corresponding stamping equipment, the notch 2 is arranged on the surface of the blank 1, the unevenness of the stamping part is caused by the residual stress in the material, and a discharge channel is provided for the residual stress in the material by the reasonable processing mode of the notch 2.

The flatness of the stamping part is adjusted by adjusting the processing parameters of the notch 2 on the surface of the blank 1, so that the stamping part deforms, absorbs energy or changes the impact direction according to the design requirement, the impact energy is reduced, and the damage to an object to be protected is reduced.

As a preferred scheme of the present invention, at least one side of each blank 1 is provided with a notch 2, and the notch 2 is used for blocking a stress transmission channel inside the material.

As a preferred aspect of the present invention, the processing parameters of the engraved groove 2 include, but are not limited to, the processing angle, depth, width, shape and number of the engraved groove 2.

Example 2: the notch 2 is provided with a low-strength area for generating collapse and absorbing energy preferentially.

Example 3: the notch 2 is provided with a collapse angle for changing the impact direction, reducing the impact acceleration and improving the protection of important objects.

Example 4: when the bending angle of the stamping part is 90 degrees, a plurality of notches 2 are machined on the surface of the blank 1 at intervals, the machining angle (relative to the stress direction of the blank 1) of the notches 2 is preferably 45 degrees, the notches 2 are longitudinally machined on the longitudinal surface and the horizontal surface of the blank 1, the notches 2 are distributed along the horizontal direction of the bending part of the stamping part, the notches 2 can block stress transmission, the unevenness of the plate surface is reduced, and the unevenness of the bottom of the stamping part can be reduced to 0.01 percent or lower.

Example 5: when the bending angle of the stamping part is 90 degrees, a plurality of notches 2 are machined on the surface of the blank 1 at intervals from top to bottom, the machining angle (relative to the stress direction of the blank 1) of the notches 2 is preferably 180 degrees, and the notches 2 are horizontally machined on the longitudinal surface and the horizontal surface of the blank 1, so that the notches 2 can block stress transmission, reduce the unevenness of the plate surface and reduce the unevenness of the bottom to 0.01 percent or lower.

Through adopting above-mentioned design, can show the roughness that improves the stamping workpiece, also can realize balancing between the roughness and the intensity of stamping workpiece.

Example 6: the bottom projection height of the traditional disc-shaped drawing part has a certain relation with the yield strength, drawing pressure and disc diameter of the blank 1, and the ratio is generally about 0.2% of the disc diameter and is called as the unevenness below; when the grooving processing method of the scheme is applied to the disc-shaped drawing part, the processing angle, the depth, the width and the shape of the grooving are shown in figures 5-7.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The method for reducing the rebound deformation rate of the stamping part is characterized by comprising the following steps: comprises a stamping part, a blank (1) and a notch groove (2); the stamping part is formed by processing a blank (1) and corresponding stamping equipment, and the notch groove (2) is formed in the surface of the blank (1); and adjusting the flatness of the stamping part by adjusting the processing parameters of the notch groove (2) on the surface of the blank (1).

2. The method for reducing the rebound deformation rate of the stamping part according to claim 1, wherein the method comprises the following steps: at least one surface of each blank (1) is provided with a notch groove (2), and the notch grooves (2) are used for blocking a stress transmission channel in a material.

3. The method for reducing the rebound deformation rate of the stamping part according to claim 1, wherein the method comprises the following steps: the processing parameters of the notches (2) include but are not limited to processing angle, depth, width, shape and number of the notches (2).

4. The method for reducing the rebound deformation rate of the stamping part according to claim 1, wherein the method comprises the following steps: and a low-strength area is processed on the notch groove (2).

5. The method for reducing the rebound deformation rate of the stamping part according to claim 1, wherein the method comprises the following steps: and a collapsing angle is processed on the notch groove (2).

6. The method for reducing the rebound deformation rate of the stamping part according to claim 1, wherein the method comprises the following steps: when the bending angle of stamping workpiece is 90, its blank (1) is processed at the interval on the surface and is had a plurality of cutting (2), and the preferred angle of processing of cutting (2) is 45, and cutting (2) vertical processing is on the longitudinal surface and the horizontal plane of blank (1), and a plurality of cutting (2) distribute along the horizontal direction of the department of bending of stamping workpiece.

7. The method for reducing the rebound deformation rate of the stamping part according to claim 1, wherein the method comprises the following steps: when the bending angle of stamping part is 90, its blank (1) surface is from last to having a plurality of notch grooves (2) of interval processing down, and the preferred angle of processing of notch groove (2) is 180, and many notch groove (2) horizontal processing are on the longitudinal plane and the horizontal plane of blank (1).