CN215473329U

CN215473329U - Long service life's drift

Info

Publication number: CN215473329U
Application number: CN202120621511.0U
Authority: CN
Inventors: 杨金良
Original assignee: Wuxi Jielushi Hardware Technology Co ltd
Current assignee: Wuxi Jielushi Hardware Technology Co ltd
Priority date: 2021-03-27
Filing date: 2021-03-27
Publication date: 2022-01-11
Anticipated expiration: 2031-03-27

Abstract

The utility model relates to a punch, in particular to a punch with long service life, which comprises a punch, wherein the punch is integrally formed by a core rod, a first coating layer, a second coating layer, a third coating layer and a Cr-plated layer, the first coating layer, the second coating layer, the third coating layer and the Cr-plated layer are coated on the outer side of the core rod from the inner side to the outer side, and the strength of the first coating layer, the second coating layer, the third coating layer and the Cr-plated layer is sequentially increased. Through setting up the drift into the setting of being coated the outside at the plug by multilayer cladding layer, can play after the wearing and tearing of plating Cr layer, because the drift itself comprises multiple different material layers, so the stress in the drift can disperse in different cladding, has reduced the surperficial plating Cr layer wearing and tearing back of drift greatly, and the drift presents the probability that the chip collapses to fly.

Description

Long service life's drift

Technical Field

The utility model relates to a punch, in particular to a punch with long service life.

Background

At present, the punch is generally of an integrated structure, most of the materials of the punch are hard alloy, a frequently-used method for prolonging the service life of the punch is that a coating is arranged on the surface of the punch, the service life of the punch is prolonged through the coating, the punch produced and manufactured in a traditional coating mode is used in a layer, the punch can be rapidly damaged after the coating is worn, the stress concentration in the punch is caused due to the long-time use of the punch, and the punch can be broken into fragments after the coating is worn, so that the punch is extremely dangerous.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a punch with long service life so as to solve the problems in the prior art.

The technical purpose of the utility model is realized by the following technical scheme:

the utility model provides a long service life's drift, includes the drift, the drift is by plug, first cladding, second cladding, third cladding and plate Cr layer integrated into one piece, first cladding, second cladding, third cladding and plate Cr layer from interior to exterior one side cladding in the outside of plug, just the intensity of first cladding, second cladding, third cladding and plate Cr layer increases in proper order.

By adopting the technical scheme, after the Cr-plated layer is worn, because the punch is composed of a plurality of different material layers, the stress in the punch can be dispersed in different coating layers, and the probability that the punch is broken into fragments after the Cr-plated layer on the surface of the punch is worn is greatly reduced.

In a further embodiment, the thickness of the second cladding layer is twice the thickness of the first cladding layer, the thickness of the third cladding layer is twice the thickness of the second cladding layer, and the thickness of the Cr-plated layer is 3-5 um.

In conclusion, the utility model has the following beneficial effects:

1. through setting up the drift into the setting of being coated the outside at the plug by multilayer cladding layer, can play after the wearing and tearing of plating Cr layer, because the drift itself comprises multiple different material layers, so the stress in the drift can disperse in different cladding, has reduced the surperficial plating Cr layer wearing and tearing back of drift greatly, and the drift presents the probability that the chip collapses to fly.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure, 1, a punch; 11. a core rod; 12. a first cladding layer; 13. a second cladding layer; 14. a third coating layer; 15. and plating a Cr layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in fig. 1, the terms "bottom" and "top", "inner" and "outer" refer to directions toward and away from a particular component geometry, respectively, and the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present specification, "plurality" means two or more unless the direction of the center is specifically defined otherwise.

Example (b):

as shown in fig. 1, a punch with long service life comprises a punch 1, wherein the punch 1 is integrally formed by a core rod 11, a first coating layer 12, a second coating layer 13, a third coating layer 14 and a Cr-plated layer 15, the first coating layer 12, the second coating layer 13, the third coating layer 14 and the Cr-plated layer 15 are coated on the outer side of the core rod 11 from the inner side to the outer side, the strength of the first coating layer 12, the strength of the second coating layer 13, the strength of the third coating layer 14 and the strength of the Cr-plated layer 15 are sequentially increased, the thickness of the second coating layer 13 is twice that of the first coating layer 12, the thickness of the third coating layer 14 is twice that of the second coating layer 13, the thickness of the Cr-plated layer 15 is 3um to 5um, during the manufacture of the punch, the core rod, the first coating layer 12, the second coating layer 13 and the third coating layer 14 which are mutually matched are forged respectively, and the first coating layer 12, the second coating layer 13 and the third coating layer 14 are all in a sleeve shape, the bottom ends of the first cladding layer 12, the second cladding layer 13 and the third cladding layer 14 are all completely closed, the core rod 11, the first cladding layer 12, the second cladding layer 13 and the third cladding layer 14 are all in clearance fit, finally, a certain amount of material of the second cladding layer 13 in a molten state is placed in the third cladding layer 14, then the second cladding layer is inserted into the third cladding layer, and the like, the first cladding layer 12 and the core rod 11 are continuously inserted, then the surface of the third cladding layer and the top end surfaces of the core rod, the first cladding layer 12, the second cladding layer 13 and the third cladding layer 14 are trimmed again, and finally, the surface of the third cladding layer is electroplated with the Cr layer 15.

The specific implementation process comprises the following steps: because the hardness and the thickness of the first coating layer 12, the second coating layer 13 and the third coating layer 14 are sequentially increased, the punch can collapse towards the center of the punch when being subjected to overload load after the Cr-plated layer 15 on the surface of the punch is worn in the production process, the problem that the punch is broken into fragments and is broken away is avoided, and the safety of production and manufacturing personnel is improved.

In the embodiments of the present disclosure, the terms "mounting," "connecting," "fixing," and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the disclosed embodiments of the utility model can be understood by those of ordinary skill in the art as appropriate.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A punch with long service life comprises a punch (1), and is characterized in that: the punch (1) is formed by a core rod (11), a first coating layer (12), a second coating layer (13), a third coating layer (14) and a Cr-plated layer (15) in an integrated mode, the first coating layer (12), the second coating layer (13), the third coating layer (14) and the Cr-plated layer (15) are coated on the outer side of the core rod (11) from inside to outside, and the strength of the first coating layer (12), the second coating layer (13), the third coating layer (14) and the Cr-plated layer (15) is increased in sequence.

2. A long-life punch as claimed in claim 1, wherein: the thickness of the second coating layer (13) is twice that of the first coating layer (12), the thickness of the third coating layer (14) is twice that of the second coating layer (13), and the thickness of the Cr-plated layer (15) is 3-5 um.