CN101829734B

CN101829734B - Riveting method

Info

Publication number: CN101829734B
Application number: CN2010101583818A
Authority: CN
Inventors: 李殷德
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-11
Filing date: 2008-12-11
Publication date: 2011-12-07
Anticipated expiration: 2028-12-11
Also published as: CN101829734A

Abstract

The invention discloses a riveting method, which comprises the following steps of: pre-treating two metal elements to be riveted by using a traditional mechanical processing method of stamping or lathing, forming a clearance at riveting points of the two metal elements to be riveted, and applying pressure to the riveting points of the two metal elements to be riveted by combined stamping and riveting so as to mutually extrude the two metal elements and fill the clearance to form firm connection. The riveting method is a two-step method combining pre-treatment performed by adopting the traditional mechanical processing method and cavity angle-expansion filling, wherein the metal elements to be riveted are pre-treated with certain shapes by using the traditional mechanical processing method of stamping or lathing to form convenient riveting points, and then the two metal elements which have a cavity before combination are mutually extruded by combined stamping and riveting under the action of stamping to fill the cavity so as to form an inverted locking structure filled partially or fully, so the purpose of firm riveting is fulfilled.

Description

A kind of clinching method

Technical field

The invention belongs to the Machining Technology field, be specifically related to the clinching method between the hardware of tool definite shape.

Background technology

For the permanent riveting process of metal that need satisfy outward appearance and fixing requirement simultaneously, always there is very high difficulty.Existing traditional handicraft adopts the riveting of rising of means of spot welds or straight shape, and not only complex technical process, production efficiency are low, and firm weak effect, electroplates riveted joint position, back appearance poor.

Summary of the invention

The objective of the invention is at the deficiencies in the prior art, a kind of firm and reliable connection, production efficiency height are provided, can effectively cut down the consumption of energy and the rise clinching method at angle of hole economical with materials, that be particularly suitable for loudspeaker rear plate manufacturing in the electron trade.

The objective of the invention is to be achieved through the following technical solutions:

A kind of clinching method is characterized in may further comprise the steps:

Utilize traditional machining process of punching press or machined into that two hardwares to be riveted are carried out preliminary treatment earlier, riveting point at two hardwares to be riveted forms the space, the preliminary treatment of this moment is to utilize the cooperation of upper die and lower die to stamp out the blind hole with convex mouth in riveting point, metal cartridge bottom to be riveted earlier, utilize the cooperation of upper die and lower die to stamp out and the corresponding protruding nail of blind hole in riveting point, metal base plate middle part to be riveted again, and stamp out shrinkage pool at its bottom surface correspondence position; Exert pressure and make the extruding and fill the space and form firm connection mutually of two hardwares in the riveting point that is riveted on two hardwares to be riveted by combined pressing again, exert pressure and make the extruding and fill the space to form firm connection be to utilize the cooperation of the blind hole of metal cartridge and metal base plate and protruding nail both to be combined and put into mould to carry out knockdown punching press riveted joint mutually of two hardwares in the described riveting point that is riveted on two hardwares to be riveted by combined pressing, convex mouth on the metal cartridge produces crimp because of pressurized at this moment, and the direction of its distortion is towards the blind hole center, protruding nail on the metal base plate under pressure simultaneously, its top begins distortion, the direction of distortion is to deviate from the center of metal base plate, and the distortion of convex mouth and protruding nail and mutual extruding finally cause the space of metal cartridge and metal base plate joint to form the locking structure of the mutual reversal of the natural order of things of filling up or all filling up in the gap.

The present invention fills the clinching method of the two step method that combines owing to adopt traditional machining process to carry out preliminary treatment and the hole angle of rising, earlier the hardware that will rivet is mutually carried out the preliminary treatment of definite shape by the machining mode of utilizing traditional punching press or machined into, form behind the riveting point easily again and to make two hardwares that have the hole before the combination be subjected to punching press to influence mutual extrusion packing hole by the combined pressing riveted joint to form the reversal of the natural order of things locking structure that part is filled up or all filled up, reach the purpose of firm riveted joint.And processing and making process is simple, and whole process can realize automatic continuous production, the production efficiency height, and can effectively cut down the consumption of energy and economical with materials, directly reduced manufacturing cost, be particularly suitable for the making of loudspeaker rear plate in the electron trade.

Describe work implementation procedure of the present invention in detail below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the realization flow figure of embodiment of the present invention.

The specific embodiment

As shown in Figure 1, clinching method of the present invention may further comprise the steps: utilize traditional machining process of punching press or machined into that two hardwares to be riveted are carried out preliminary treatment earlier, form space 3 in the riveting point of two hardwares to be riveted, exert pressure and make the extruding and fill space 3 and form firmly and connect mutually of two hardwares in the riveting point that is riveted on two hardwares to be riveted by combined pressing again.Wherein according to the shape of hardware to be riveted and preliminary treatment that characteristic is carried out and the appearance performance requirement after the combination punching press riveted joint, the present invention includes but be not limited to following this embodiment, as shown in Figure 1, above-mentioned clinching method can be may further comprise the steps: utilize the cooperation of patrix 41 and counterdie 42 to stamp out the blind hole 11 with convex mouth 12 in riveting point, metal cartridge to be riveted 1 bottom earlier, utilize in riveting point, metal base plate to be riveted 2 middle part again to stamp out entirely joining of patrix 51 and counterdie 52 and metal cartridge 1 blind hole 11 corresponding protruding nails 21, and stamp out shrinkage pool 22 at its bottom surface correspondence position; Then, utilize the cooperation of the blind hole 11 of metal cartridge 1 and metal base plate 2 and protruding nail 21 both to be combined and put into mould and carry out knockdown punching press riveted joint, convex mouth 12 on the metal cartridge 1 produces crimp because of pressurized at this moment, and the direction of its distortion is towards blind hole 11 centers, protruding nail 21 on the metal base plate 2 under pressure simultaneously, its top begins distortion, the direction of distortion is to deviate from the center of metal base plate 2, the distortion of convex mouth 12 and protruding nail 21 and mutually extruding finally cause the space 3 of metal cartridge 1 and metal base plate 2 joints to form the locking structure of the mutual reversal of the natural order of things that spaces 3 parts fill up or all fill up.

Claims

1. clinching method, it is characterized in that described clinching method may further comprise the steps: utilize traditional machining process of punching press that two hardwares to be riveted are carried out preliminary treatment earlier, riveting point at two hardwares to be riveted forms space (3), at this moment, described preliminary treatment is a blind hole (11) of utilizing the cooperation of patrix (41) and counterdie (42) to stamp out in riveting point, metal cartridge to be riveted (1) bottom to have convex mouth (12), utilize the cooperation of patrix (51) and counterdie (52) to stamp out and the corresponding protruding nail of blind hole (11) (21) in riveting point, metal base plate to be riveted (2) middle part again, and stamp out shrinkage pool (22) at its bottom surface correspondence position; Exert pressure and make the extruding and fill space (3) and form firmly and connect mutually of two hardwares in the riveting point that is riveted on two hardwares to be riveted by combined pressing again, this moment exerts pressure and makes the extruding and fill space (3) and form that firmly to connect be to utilize the cooperation of the blind hole (11) of metal cartridge (1) and metal base plate (2) and protruding nail (21) both to be combined and put into mould to carry out knockdown punching press and rivet mutually of two hardwares in the described riveting point that is riveted on two hardwares to be riveted by combined pressing, convex mouth (12) on the metal cartridge produces crimp because of pressurized at this moment, and the direction of its distortion is towards blind hole (11) center, protruding nail (21) on the metal base plate (2) under pressure simultaneously, its top begins distortion, the direction of distortion is to deviate from the center of metal base plate (2), and the distortion of convex mouth (12) and protruding nail (21) and mutual extruding finally cause the space (3) of metal cartridge (1) and metal base plate (2) joint to form the locking structure of the mutual reversal of the natural order of things of partly filling up or all filling up in space (3).