CN109821977B

CN109821977B - Forming method of spherical contact element

Info

Publication number: CN109821977B
Application number: CN201910058831.7A
Authority: CN
Inventors: 梁申程; 王超超
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2020-09-22
Anticipated expiration: 2039-01-22
Also published as: CN109821977A

Abstract

A method for forming a ball contact comprises the following steps: s10, providing a metal plate, defining the plane of the metal plate as an XZ plane, and bending the metal plate in the Y direction to form a U-shaped structure, wherein the X plane is perpendicular to the XZ plane and is in the Y direction; s20, punching and drawing the U-shaped structure downwards along the Y direction in the 360-degree direction of the XZ plane to form a ball-shaped contact piece; s30, stretching for many times to make the ball contact element reach the needed size and shape structure; the height of sheet metal shaping bulb contact can be improved in this application.

Description

Forming method of spherical contact element

Technical Field

The present invention relates to the field of electrical connectors, and more particularly, to a method for forming a ball contact.

Background

In some shell fragment or terminal product, can set up the contact site of a ball type structure, the contact site of this kind of ball type structure generally adopts tensile technology to make, in the manufacturing process, all has great restriction to material thickness and tensile degree, and the height of general ball type contact site can not be greater than the quadruple of material thickness, if exceed the problem that the fracture can appear in the quadruple of material thickness.

Disclosure of Invention

Therefore, it is necessary to provide a method for forming a ball-type contact, so as to solve the problem that the ball-type contact cannot be stretched to a low height due to the stretching process.

In order to solve the above technical problem, the present application provides a method for forming a ball contact, including the following steps:

s10, providing a metal plate, defining the plane of the metal plate as an XZ plane, and bending the metal plate in the Y direction to form a U-shaped structure, wherein the X plane is perpendicular to the XZ plane and is in the Y direction;

s20, punching and drawing the U-shaped structure downwards along the Y direction in the 360-degree direction of the XZ plane to form a ball-shaped contact piece;

and S30, stretching for multiple times to make the ball contact element reach the required size and shape structure.

Preferably, the bending the metal plate material in the Y direction to form the U-shaped structure in step S10 further includes:

s101, bending the metal plate 10 for the first time along the Y direction to form a first bending part, a first extending part connected with the first bending part, a second bending part formed at the tail end of the first extending part and a part to be bent formed by extending from the second bending part;

s102, bending the first extending part upwards again in the Y direction;

s103, bending the part to be bent downwards in the Y direction to form an arc-shaped top part, a third bent part and a second extending part.

Preferably, after the step S101, the first extending portion forms an acute angle with the metal plate, and the portion to be bent inclines downward and forms an acute angle with the metal plate.

Preferably, after the step S102, the first extending portion and the metal plate are in a perpendicular state, and the portion to be bent is located on one side above the metal plate in parallel.

Preferably, in step S103, the bending jig fixes the first extending portion and the second bending portion, and bends the portion to be bent downward to form an arc top, a third bending portion and a second extending portion, where the first extending portion and the second extending portion may be vertical or arc structures.

Preferably, after steps S101 to S103 are completed, the metal plate is bent to form a U-shaped structure.

Preferably, the U-shaped structure has a certain width in the Z-direction.

Preferably, in step S20, the lower die ball head jig is located below the U-shaped structure, and the U-shaped structure is pressed downward along the Y-direction from 360 degrees of the XZ plane through the upper die groove engaged with the ball head, so that the U-shaped structure is finally stretched to form a ball head contact, the first and second extending portions are connected to an integrally formed closed annular structure, and the top where the arc-shaped top is located finally forms the ball head.

Preferably, in step S30, after the ball-type contact reaches a predetermined dimension after being stretched for a plurality of times, the edge of the opening of the U-shaped structure is further bent to form an end portion.

According to the forming method of the spherical contact element, the metal plate is bent on the XY plane to form the U-shaped structure, then the U-shaped structure is downwards stretched from the XZ plane along the Y direction to form the spherical contact element, the limitation of the thickness of the metal plate on the height of the spherical contact element caused by direct stretching is avoided, the height of the spherical contact element can reach the thickness of the metal plate by the method, and the spherical contact element is guaranteed not to be broken.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.

FIG. 1 is a flow chart of a bending process of a method for forming a ball contact according to the present application;

FIG. 2 is a flow chart of a drawing process for ball-type contacts according to the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, 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 application.

Referring to fig. 1 and 2, a method for forming a ball contact according to the present application includes:

the illustrated longitudinal direction of the metal plate material 10 is defined as an X direction, an upward direction perpendicular to the X direction is a Y direction, and a direction perpendicular to the X, Y direction is a Z direction.

S01, providing a metal plate 10, and bending the metal plate 10 for the first time along the Y direction;

as shown in fig. 1A, in this step, after the metal plate 10 is bent, a first bending portion 21, a first extending portion 11 extending from the first bending portion 21, a second bending portion 22 formed at the end of the first extending portion 11, and a portion to be bent 12 extending from the second bending portion 22 are formed on the metal plate 10; in this step, the first extending portion 11 forms an acute angle or an obtuse angle with the metal plate 10, and the portion 12 to be bent is inclined downward and forms a certain included angle with the metal plate 10; the left side of fig. 1A is a schematic view illustrating bending of the metal plate by the bending jig.

S02, bending the first extending part upwards again in the Y direction;

as shown in fig. 1B, in this step, the first extending portion 11 is bent upward, so that the first extending portion 11 and the metal plate 10 are in a vertical state, and at this time, the portion to be bent 12 is located on one side above the metal plate 10 in parallel;

s03, bending the part 12 to be bent downwards in the Y direction to form an arc-shaped top 13, a third bent part 23 and a second extending part 14;

as shown in fig. 1C, in this step, the bending jig fixes the first extending portion 11 and the second bending portion 22, and bends the portion to be bent 12 downward to form an arc-shaped top portion 13, a third bending portion 23, and a second extending portion 14. The first and

second extensions

11, 14 may be vertical or arc-shaped.

In steps S01 to S03, the step of bending the metal plate 10 in the XY plane to form a U-shaped structure is completed, and the U-shaped structure is bent through the three steps S01 to S03 to prevent the metal plate 10 from being broken. The bending jig for each step is shown on the left side of fig. 1. The U-shaped structure has a certain width in the Z-direction.

S04, punching and drawing the U-shaped structure downwards along the Y direction in a 360-degree direction to form a ball-shaped contact piece;

as shown in fig. 2A, in this step, the lower die ball head jig is located below the U-shaped structure, and then the U-shaped structure is pressed downward from 360 degrees of the XZ plane along the Y direction through a groove (not numbered) engaged with the ball head, so that the U-shaped structure is finally stretched to form a ball head contact, and the first and second extending

portions

11 and 14 are connected to an integrally formed closed annular structure. The top of the arc-shaped top part 13 is finally formed into a ball head.

S05, stretching for many times to make the ball contact element reach the needed size and shape structure;

as shown in fig. 2B, 2C, and 2D, the purpose of the multiple stretching is to make the specification of the ball head contact meet the predetermined requirement and avoid the occurrence of fracture when the ball head contact is stretched in place at one time. Meanwhile, in the drawing process of this step, an end portion 15 bent and parallel to the metal plate material 10 is formed at the tip end position of the second extending portion 14.

According to the forming method of the spherical contact element, the metal plate 10 is bent on the XY plane to form the U-shaped structure, then the U-shaped structure is downwards stretched from the XZ plane along the Y direction to form the spherical contact element, the limitation that the height of the spherical contact element is limited by the thickness of the metal plate 10 due to direct stretching is avoided, the height of the spherical contact element can reach 10 times of the thickness of the metal plate 10 by adopting the method, and the spherical contact element is prevented from being broken.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A method for forming a ball contact, comprising the steps of:

s30, stretching for many times to make the ball contact element reach the needed size and shape structure;

step S10 is to bend the metal plate in the Y direction to form a U-shaped structure, and further includes:

s101, bending the metal plate for the first time along the Y direction to form a first bending part, a first extending part connected with the first bending part, a second bending part formed at the tail end of the first extending part and a part to be bent formed by extending from the second bending part;

s102, bending the first extending part upwards again in the Y direction;

s103, bending the part to be bent downwards in the Y direction to form an arc-shaped top part, a third bent part and a second extending part;

the U-shaped structure has a certain width in the Z direction; in step S20, the U-shaped structure is pressed downward from 360 degrees of the XZ plane along the Y direction by the lower die ball head jig, and the U-shaped structure is finally stretched to form a ball head contact member, the first and second extending portions are connected to an integrally formed closed annular structure, and the ball head is finally formed at the top where the arc-shaped top is located.

2. The method for forming a ball-type contact according to claim 1, wherein after the step S101, the first extending portion forms an acute angle with the metal plate, and the portion to be bent is inclined downward and forms an acute angle with the metal plate.

3. The method for forming a ball-type contact according to claim 2, wherein after the step S102, the first extending portion and the metal plate are perpendicular to each other, and the portion to be bent is located at one side above the metal plate in parallel.

4. The method for forming a ball-type contact according to claim 3, wherein in step S103, the bending fixture fixes the first extending portion and the second bending portion, and bends the portion to be bent downward to form an arc top, a third bending portion and a second extending portion, wherein the first and second extending portions may be vertical or arc structures.

5. The method of forming a ball-type contact according to claim 4, wherein after steps S101 to S103 are completed, the metal plate is bent to form a U-shaped structure.

6. The method of forming a ball-type contact according to claim 1, wherein the ball-type contact reaches a predetermined dimensional specification after being stretched a plurality of times in step S30, and in this step, an opening edge of the U-shaped structure is further bent to form an end portion.