Chromium nitride aluminum stamping rod subjected to vacuum coating treatment

Abstract

The utility model discloses a chromium nitride aluminum punching rod for vacuum coating treatment, which relates to the technical field of cold heading dies, and is characterized by comprising a main rod body, the main rod body is connected with an impact head, and the impact head is connected with a high-strength head; the main rod body, the impact head part and the high-strength head part are integrally formed, and high-strength chromium nitride layers are arranged at one end, close to the high-strength head part, of the impact head part and the outer side of the high-strength head part. The punching rod has the advantages that the structure of the punching rod is optimized, the hardness is remarkably improved to 140-160 HRC by combining the high-strength chromium nitride aluminum coating, and therefore the service life is prolonged by 3-5 times, and the problems that the punching rod is frequently replaced and production economic benefits are affected due to the fact that the punching rod is broken in the using process are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading dies, and more specifically to a vacuum-plated chromium nitride aluminum punch. Background Art

[0002] Punch rods are mold accessories made of high-speed steel, powder high-speed steel, tungsten steel and other molds suitable for steel processing. Suitable for cold heading, cold extrusion, stamping, hydraulic pressure, injection molding and other processing industries.

[0003] Traditional punches are basically made of SKH55 material and have a cylindrical rod structure. After heat treatment, the hardness is between 61-63HRC. However, based on the traditional punches, there is a problem of short service life. It is very easy to break during use, which affects the structural integrity of the mold. At the same time, due to the problem of breakage, frequent replacement is required, which seriously affects the production efficiency and needs to be improved. Summary of the invention

[0004] In view of this, the purpose of this application is to provide a vacuum-coated chromium nitride aluminum punch rod to achieve the purpose of improving hardness and extending the service life. The specific scheme is as follows:

[0005] A vacuum-coated chromium nitride aluminum punch rod comprises a main rod body, the main rod body is connected to an impact head, and the impact head is connected to a high-strength head; the main rod body, the impact head and the high-strength head are integrally formed, and an end of the impact head close to the high-strength head and the outer side of the high-strength head are both provided with a high-strength chromium nitride aluminum coating.

[0006] Preferably, a connecting tail is integrally formed at one end of the main rod body away from the impact head, a tail chamfer is provided between the connecting tail and the main rod body, and a diameter of the connecting tail is greater than a diameter of the main rod body.

[0007] Preferably, a rounded head is provided between the impact head and the main rod body, and the diameter of the impact head is smaller than the diameter of the main rod body.

[0008] Preferably: the high-strength head is composed of a wide diameter portion, a reduced diameter portion, a narrow diameter portion and a punch head which are connected in sequence; chamfers are provided between the wide diameter portion and the impact head, between the wide diameter portion and the reduced diameter portion, and between the reduced diameter portion and the narrow diameter portion, and the diameters of the wide diameter portion, the reduced diameter portion and the narrow diameter portion gradually decrease.

[0009] Preferably, the diameter of the punch head gradually increases from one end close to the narrow diameter portion to the other end, and then gradually decreases, and the end of the punch head with a reduced diameter is sequentially provided with an abutting inclined wall, an impact inclined wall and a cone head.

[0010] Preferably: the abutting inclined wall forms an angle α with the horizontal plane; the impact inclined wall forms a sharp angle β; the cone head forms a sharp angle γ; and α is 5°±0.5°, β is 92°±0.5°, and γ is 150°.

[0011] From the above scheme, it can be seen that the present application provides a vacuum-coated chromium nitride aluminum punch rod, which has the following beneficial effects: by optimizing the punch rod structure and combining it with a high-strength chromium nitride aluminum coating, the hardness is significantly increased to 140-160HRC, thereby extending the service life by 3-5 times, avoiding the frequent replacement of the punch rod due to breakage during use and affecting the production economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of this embodiment;

[0013] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part A.

[0014] Explanation of the reference numerals: 11, main rod body; 12, connecting tail; 121, rounded corners of tail; 13, impact head; 131, rounded corners of head; 14, high-strength head; 141, wide diameter portion; 142, reduced diameter portion; 143, narrow diameter portion; 144, abutting punch; 1441, abutting inclined wall; 1442, impacting inclined wall; 1443, cone head. DETAILED DESCRIPTION

[0015] In order to make the technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0016] like Figure 1As shown, a vacuum-coated chromium nitride aluminum punch rod comprises a main rod body 11. A connecting tail portion 12 is integrally formed at one end of the main rod body 11. A tail chamfer 121 is provided between the connecting tail portion 12 and the main rod body 11, and the diameter of the connecting tail portion 12 is greater than the diameter of the main rod body 11. An impact head 13 is connected to the other end of the main rod body 11, and the impact head 13 is connected to a high-strength head 14. The main rod body 11, the impact head 13 and the high-strength head 14 are integrally formed, and a high-strength chromium nitride aluminum coating is provided at one end of the impact head 13 close to the high-strength head 14 and on the outer side of the high-strength head 14. Therefore, by adopting vacuum coating treatment on the integrally formed main rod body 11, impact head 13 and high-strength head 14, the local area of ​​the high-strength head 14 and the impact head 13 is formed to form a high-strength chromium nitride aluminum coating, the hardness of the vacuum-coated chromium nitride aluminum punch rod can be significantly improved to 140-160HRC, thereby extending the service life by 3-5 times, avoiding the frequent replacement of the vacuum-coated chromium nitride aluminum punch rod due to breakage during use and affecting the production economic benefits.

[0017] It should be noted that a connecting tail 12 is integrally formed at one end of the main rod body 11 away from the impact head 13. A tail chamfer 121 is provided between the connecting tail 12 and the main rod body 11, and the diameter of the connecting tail 12 is larger than the diameter of the main rod body 11. The connecting tail 12 is used to connect and fix the vacuum-coated chromium nitride aluminum punch rod, thereby improving the fixing stability and service life of the vacuum-coated chromium nitride aluminum punch rod. At the same time, a head chamfer 131 is provided between the impact head 13 and the main rod body 11, and the diameter of the impact head 13 is smaller than the diameter of the main rod body 11.

[0018] like Figure 1 , Figure 2 As shown, the high-strength head 14 is composed of a wide diameter portion 141, a reduced diameter portion 142, a narrow diameter portion 143 and a punch head 144 connected in sequence. Chamfers are provided between the wide diameter portion 141 and the impact head 13, between the wide diameter portion 141 and the reduced diameter portion 142, and between the reduced diameter portion 142 and the narrow diameter portion 143, and the diameters of the wide diameter portion 141, the reduced diameter portion 142 and the narrow diameter portion 143 are gradually reduced.

[0019] like Figure 2As shown, the diameter of the punch gradually increases from one end close to the narrow diameter portion 143 to the other end, and then gradually decreases, and the end of the punch 144 where the diameter is reduced is provided with an abutting oblique wall 1441, an impact oblique wall 1442 and a cone head 1443 in sequence. Among them, the abutting oblique wall 1441 forms an angle α with the horizontal plane; the impact oblique wall 1442 forms a sharp angle β; the cone head 1443 forms a sharp angle γ; and α is 5°±0.5°, β is 92°±0.5°, and γ is 150°. Therefore, it will play a significant role in improving the impact resistance of the vacuum-coated chromium nitride aluminum punch during operation, so as to effectively extend the service life of the vacuum-coated chromium nitride aluminum punch.

[0020] In summary, the present application provides a vacuum-coated chromium nitride aluminum punch rod, which significantly improves the hardness to 140-160HRC by optimizing the structure of the vacuum-coated chromium nitride aluminum punch rod and combining it with a high-strength chromium nitride aluminum coating, thereby extending the service life by 3-5 times and avoiding the frequent replacement and impact on production economic benefits caused by the breakage of the vacuum-coated chromium nitride aluminum punch rod during use.

[0021] The "first", "second", "third", "fourth", etc. (if any) referred to in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods or devices.

[0022] It should be noted that the descriptions involving "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0023] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A vacuum-coated chromium nitride aluminum punch, characterized in that: The invention comprises a main rod body (11), wherein the main rod body (11) is connected to an impact head (13), and the impact head (13) is connected to a high-strength head (14); the main rod body (11), the impact head (13) and the high-strength head (14) are integrally formed, and an end of the impact head (13) close to the high-strength head (14) and the outer side of the high-strength head (14) are both provided with a high-strength chromium nitride aluminum coating.

2. The vacuum-coated chromium nitride aluminum punch according to claim 1, characterized in that: A connecting tail (12) is integrally formed at one end of the main rod body (11) away from the impact head (13), a tail chamfer (121) is provided between the connecting tail (12) and the main rod body (11), and the diameter of the connecting tail (12) is greater than the diameter of the main rod body (11).

3. The vacuum-coated chromium nitride aluminum punch according to claim 1, characterized in that: A head rounded corner (131) is provided between the impact head (13) and the main rod body (11), and the diameter of the impact head (13) is smaller than the diameter of the main rod body (11).

4. The vacuum-coated chromium nitride aluminum punch according to claim 1, characterized in that: The high-strength head (14) is composed of a wide diameter portion (141), a reduced diameter portion (142), a narrow diameter portion (143) and a resisting punch (144) which are connected in sequence; chamfers are provided between the wide diameter portion (141) and the impact head (13), between the wide diameter portion (141) and the reduced diameter portion (142), and between the reduced diameter portion (142) and the narrow diameter portion (143), and the diameters of the wide diameter portion (141), the reduced diameter portion (142) and the narrow diameter portion (143) are gradually reduced.

5. The vacuum-coated chromium nitride aluminum punch according to claim 4, characterized in that: The diameter of the impact punch (144) gradually increases from one end close to the narrow diameter portion (143) to the other end, and then gradually decreases, and the end of the impact punch (144) with a reduced diameter is sequentially provided with an impact inclined wall (1441), an impact inclined wall (1442) and a cone head (1443).

6. The vacuum-coated chromium nitride aluminum punch according to claim 5, characterized in that: The abutting inclined wall (1441) forms an angle α with the horizontal plane; the impact inclined wall (1442) forms a sharp angle β; the cone head (1443) forms a sharp angle γ; and α is 5°±0.5°, β is 92°±0.5°, and γ is 150°.

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