CN114406165B

CN114406165B - Part for automobile door lock and manufacturing method thereof

Info

Publication number: CN114406165B
Application number: CN202111671125.3A
Authority: CN
Inventors: 莫艺贤
Original assignee: Ming Hao Auto Metal Parts Guangzhou Co ltd
Current assignee: Ming Hao Auto Metal Parts Guangzhou Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2023-09-19
Anticipated expiration: 2041-12-31
Also published as: CN114406165A

Abstract

The application discloses a part for an automobile door lock and a manufacturing method thereof. The application adopts the cold heading stamping mode to process the appearance of the part and the end groove and the drainage groove, and compared with the traditional turning pin processing, the application improves the production efficiency and is more suitable for batch production. The application relates to the technical field of metal forging.

Description

Part for automobile door lock and manufacturing method thereof

Technical Field

The application relates to a part for an automobile door lock and a manufacturing method thereof, belonging to the technical field of metal forging.

Background

In a tail door unlocking and rotating system used in the automobile industry at present, parts adopted at a door lock are flat, flat holes are formed in two ends of the parts, and through holes penetrating through the two ends of the parts are formed in the middle of the parts. Because of its complex shape, CNC is generally used for turning. However, in mass production, CNC cutting efficiency is low, and it is difficult to satisfy mass production requirements. Thus, a more efficient processing method is needed.

Disclosure of Invention

The application aims to at least solve one of the technical problems in the prior art, and provides a part for an automobile door lock and a manufacturing method thereof, which can improve the production efficiency of the part.

According to an embodiment of the first aspect of the present application, there is provided a component for an automobile door lock, including a component body, the component body is in a flat cylindrical shape, one end of the component body is provided with a groove, an edge of the groove is provided with a drainage groove, the drainage groove extends from an inner side of the groove to an outer side of the component body, a through hole is provided in the groove, and the through hole penetrates from one end of the component body to the other end.

According to an embodiment of the first aspect of the present application, further, the number of the drainage grooves is two, and the two drainage grooves are arranged on two sides of the groove.

According to an embodiment of the first aspect of the present application, further, the two ends of the part body are provided with the grooves.

According to an embodiment of the first aspect of the present application, further, edges of the grooves are provided with rounded corners.

According to a second aspect of the present application, there is provided a method of manufacturing a part for an automotive door lock, comprising:

cutting the material to obtain a blank;

shaping one end of the blank to form a chamfer;

cold heading the groove of the end face of the blank and a preformed pit of the drainage groove;

cold heading is carried out again along the preformed pit to obtain the drainage groove;

and punching the groove to obtain the through hole, and finishing processing.

According to an embodiment of the second aspect of the present application, further, the material is aligned by an alignment wheel.

According to an embodiment of the second aspect of the present application, further, the material is a flat cylindrical material.

According to a second aspect of the present application, further, the method for manufacturing a part for an automobile door lock employs a cold heading die including an upper die, a lower die, an upper die punch and a lower die punch, the upper die and the lower die being capable of being brought close to each other; the lower die punch rod is fixedly connected with the lower die, a punching space is formed in the lower die punch rod, and the blank is arranged in the punching space; the upper die punch rod is connected with the upper die, and one end of the upper die punch rod can be contacted with one end of the blank; at least one of the upper die punch rod and the punching space is provided with a lug on the end face, and the lug is used for pressing the groove.

According to a second aspect of the present application, further, bumps are provided on both sides of the bump, and the bumps are used for pressing the pre-formed pit.

According to a second aspect of the embodiment of the present application, further, the cold heading die further includes a punch back pad disposed between the upper die and the upper die punch for buffering an impact force between the upper die and the upper die punch.

The beneficial effects of the embodiment of the application at least comprise: the application adopts the cold heading stamping mode to process the appearance of the part and the end groove and the drainage groove, and compared with the traditional turning pin processing, the application improves the production efficiency and is more suitable for batch production.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the application, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.

FIG. 1 is a schematic view of a flange member after step S1 in an embodiment of the second aspect of the present application;

FIG. 2 is a schematic view of a flange member after step S2 in an embodiment of the second aspect of the present application;

FIG. 3 is a schematic view of a flange member after step S3 in an embodiment of the second aspect of the present application;

FIG. 4 is a schematic view of a flange member after step S4 in an embodiment of the second aspect of the present application;

FIG. 5 is a schematic view of a flange member after step S5 in an embodiment of the second aspect of the present application;

FIG. 6 is a block diagram of a cold heading die employed in an embodiment of a second aspect of the application;

fig. 7 is a block diagram of upper and lower die punches in accordance with a second embodiment of the present application.

Detailed Description

Reference will now be made in detail to the present embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present application, but not to limit the scope of the present application.

In the description of the present application, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

In the description of the present application, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 5, a component for an automotive door lock according to an embodiment of the first aspect of the present application includes a component body 1, the component body 1 having a flat cylindrical shape. One end of which is provided with a recess 11, and the edge of the recess 11 is provided with a drain 12 for assisting in draining liquid that may have accumulated in the recess 11. To achieve this function, the drain groove 12 extends from the inside of the recess 11 to the outside of the part body 1, so as to guide the outflow of the liquid in the recess 11. The groove 11 is also provided with a through hole 13, and the through hole 13 penetrates from one end to the other end of the part body 1 and is used for being assembled with other parts.

Further, the number of the drainage grooves 12 is two, and the drainage grooves are respectively positioned at two sides of the groove 11, so that liquid discharge can be quickened, and corrosion of parts caused by long-time accumulation of liquid can be prevented. It will be readily appreciated that the number of drain grooves 12 may be increased to enhance the draining effect, and will not be described in detail herein.

Further, grooves 11 are formed at two ends of the part body 1, and the two ends can be interchangeably installed.

Further, the edges of the groove 11 are provided with fillets 111, which facilitate assembly.

In a second aspect of the present application, a method for manufacturing a part for an automobile door lock includes the steps of:

s1, referring to FIG. 1, selecting a flat cylindrical material, straightening by using a straightening wheel, and cutting off the material according to the length requirement of a part to obtain a blank 2;

s2, referring to FIG. 2, shaping one end of the blank 2 into a chamfer 21 so as to reduce burrs during subsequent stamping;

s3, referring to FIG. 3, cold upsetting a groove 11 on the end surface of the blank 2 and a preformed pit 22 of the water discharge groove 12, wherein the preformed pit 22 is used for preventing excessive burrs from being generated when the water discharge groove 12 is punched by subsequent cold upsetting;

s4, referring to FIG. 4, cold heading is carried out again along the preformed pit 22 to obtain the drain groove 12, and meanwhile, the groove 11 is shaped;

s5, referring to FIG. 5, holes are punched in the grooves 11, through holes 13 are obtained, and machining is completed.

Further, referring to fig. 6, in step S3 of the manufacturing method, a cold heading die 3 is employed, which includes an upper die 31, a lower die 32, an upper die punch 33, and a lower die punch 34. The upper die 31 and the lower die 32 are respectively connected with a power device, and can approach each other to complete the punching work. Referring to fig. 7, a press space 341 is provided in the lower punch 34, and a blank 2 is provided in the press space 341, and one end of the blank 2 abuts against one surface in the press space 341. The lower die punch 34 is fixedly connected with the lower die 32, and the lower die punch 34 can apply force to the blank 2 in the cold heading and stamping process. The upper die punch 33 is connected with the upper die 31, and one end of the upper die punch 33 can be in contact with the other end of the blank 2, so that in the cold heading stamping process, the upper die punch 33 and the lower die punch 34 apply force to the blank 2 respectively, and an extrusion effect is achieved. At least one end surface of the upper die punch 33 and the punch space 341 is provided with a projection 4, thereby completing the punching of the recess 11 at one or both ends of the blank 2.

Further, the bump 4 is provided with bumps 41 on both sides, and the bumps 41 are used to press the pre-pit 22.

Further, the cold heading die 3 further includes a punch back pad 35 having elasticity, disposed between the upper die 31 and the upper die punch 33, for buffering an impact force between the upper die 31 and the upper die punch 33, and extending a working life of the cold heading die 3.

While the preferred embodiments of the present application have been illustrated and described, the present application is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present application, and these equivalent modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.

Claims

1. A component for an automotive door lock, comprising: part body (1), part body (1) is oblate column, the one end of part body (1) is equipped with recess (11), the edge of recess (11) is equipped with water drainage tank (12), water drainage tank (12) follow recess (11) inboard extends to part body (1) outside, be equipped with through-hole (13) in recess (11), through-hole (13) follow the one end of part body (1) runs through to the other end.

2. The component for an automotive door lock of claim 1, wherein: the number of the drainage grooves (12) is two, and the two drainage grooves (12) are respectively arranged at two sides of the groove (11).

3. The component for an automotive door lock of claim 1, wherein: both ends of the part body (1) are provided with the grooves (11).

4. The component for an automotive door lock of claim 1, wherein: the edges of the grooves (11) are provided with fillets (111).

5. A method of manufacturing a part for an automotive door lock according to any one of claims 1 to 4, characterized by comprising:

cutting the material to obtain a blank (2);

shaping one end of the blank (2) into a chamfer (21);

-cold upsetting the groove (11) of the end face of the blank (2), and-pre-formed depressions (22) of the drainage channel (12);

-cold heading again along the pre-formed pit (22) obtaining the drain channel (12);

punching the groove (11) to obtain the through hole (13), and finishing the processing;

the manufacturing method of the part for the automobile door lock adopts a cold heading die (3), wherein the cold heading die (3) comprises an upper die (31), a lower die (32), an upper die punch rod (33) and a lower die punch rod (34), and the upper die (31) and the lower die (32) can be mutually close; the lower die punch (34) is fixedly connected with the lower die (32), the lower die punch (34) is provided with a punching space (341), and the blank (2) is arranged in the punching space (341); the upper die punch rod (33) is connected with the upper die (31), and one end of the upper die punch rod (33) can be contacted with one end of the blank (2); at least one of the upper die punch rod (33) and the punch space (341) is provided with a lug (4) on the end surface, and the lug (4) is used for pressing the groove (11); two sides of the protruding block (4) are provided with protruding points (41), and the protruding points (41) are used for pressing out the preformed pits (22).

6. The manufacturing method according to claim 5, characterized in that: the materials are straightened by a straightening wheel.

7. The manufacturing method according to claim 5, characterized in that: the material is an oblate column material.

8. The manufacturing method according to claim 5, characterized in that: the cold heading die (3) further comprises a punch rear pad (35), wherein the punch rear pad (35) is arranged between the upper die (31) and the upper die punch rod (33) and is used for buffering impact force between the upper die (31) and the upper die punch rod (33).