Combined punching tool for punching sponge rings

Abstract

The utility model discloses a combined punching tool for punching a sponge circular ring. The combined punching tool comprises an outer punch, an inner punch and a spring, wherein the inner punch is coaxially sleeved with a penetrating through hole of the outer punch, a through hole is formed in the axis of the inner punch and used for discharging waste, and a spring is arranged between the inner punch and the outer punch and used for popping out the inner punch; the inner punch and the outer punch are in micro clearance fit so as to guarantee the coaxiality of the inner punch and the outer punch. When the tool is used, the tool is vertically placed above a sponge to be punched, the inner punch is knocked by a hammer, punching of an inner hole and an outer circle of a sponge circular ring can be achieved at the same time, the inner punch is bounced by the spring after punching, then the part is directly taken down, and punching of the sponge to be punched is completed at the moment. The coaxiality of an inner hole and an outer circle of the sponge circular ring is ensured; and meanwhile, the combined punching tool is convenient to use, punching can be completed by knocking through a hammer once, material taking is convenient, and high-quality and high-efficiency machining of the sponge circular rings can be achieved.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical processing, and in particular relates to a combined punching tool for punching a sponge ring. Background Art

[0002] At present, the tooling for punching sponge ring parts is divided into two parts: inner punch and outer punch. The processing is divided into three steps: first, use a hammer to hit the outer punch to punch the outer circle, then put the inner punch into the hole of the outer punch, hit the inner punch to punch the inner circle, and finally take out the inner punch and remove the part. The processing process is relatively cumbersome and inefficient; and because the inner and outer circles of the ring are not punched at the same time, the punch is easy to be skewed during the two punching processes, and it is difficult to ensure the concentricity of the inner and outer circles. The processing quality of the parts is poor and it is easy to produce scrap. Summary of the invention

[0003] In order to solve the above technical defects in the prior art, the utility model proposes a combined punching tool for punching a sponge ring.

[0004] The technical solution to achieve the purpose of this utility model is:

[0005] A combined punching tool for punching a sponge ring, comprising an outer punch, an inner punch and a spring;

[0006] The inner punch is arranged inside the outer punch, and a spring is arranged between the inner punch and the outer punch.

[0007] Furthermore, the inner punch is coaxially sleeved in the through hole of the outer punch, and a through hole is provided at the axis of the inner punch for discharging waste materials.

[0008] Furthermore, the inner punch is arranged in the outer punch through a threaded sleeve.

[0009] Furthermore, a slight clearance is provided between the inner punch and the outer punch to ensure their coaxiality.

[0010] Furthermore, the punching openings of the outer punch and the inner punch are arc-shaped.

[0011] Furthermore, the outer punch and the inner punch are made of 40Cr material and are quenched.

[0012] Compared with the prior art, the utility model has the following significant advantages:

[0013] The combined punching tool for punching a sponge ring of the utility model can punch the sponge ring part at one time, and ensure the coaxiality of the inner hole and the outer circle of the sponge ring; at the same time, the combined punching tool is easy to use, and the punching can be completed by hitting once with a hammer, and the material is convenient to take;

[0014] The utility model can realize high-quality and high-efficiency processing of sponge rings.

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the combined punching tooling structure for punching a sponge ring of the utility model. DETAILED DESCRIPTION

[0017] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can imagine a variety of implementation methods of the utility model. Therefore, the following specific implementation methods and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the utility model or as a limitation or limitation of the technical solution of the utility model. On the contrary, the purpose of providing these embodiments is to enable those skilled in the art to understand the utility model more thoroughly. The preferred embodiments of the utility model are described in detail below in conjunction with the accompanying drawings, wherein the drawings constitute a part of this application and are used together with the embodiments of the utility model to illustrate the innovative concept of the present invention.

[0018] Example

[0019] Combination Figure 1 , a combined punching tool for punching a sponge ring, comprising an outer punch 1, an inner punch 2 and a spring 3;

[0020] The inner punch 2 is arranged inside the outer punch 1, and a spring 3 is arranged between the inner punch 2 and the outer punch 1;

[0021] The outer punch 1 is used to punch the outer circle of the sponge ring, the inner punch 2 is used to punch the inner hole of the sponge ring, and the spring 3 is used to bounce the inner punch after punching is completed to facilitate the removal of parts;

[0022] More specifically, the inner punch 2 is coaxially sleeved in the through hole of the outer punch 1, and a through hole is provided at the axis of the inner punch 2 for discharging waste.

[0023] In this embodiment, the inner punch 2 is arranged in the outer punch 1 through a threaded sleeve, so that the inner punch 2 and the outer punch 1 can be loosened without falling off;

[0024] A slight clearance is provided between the inner punch 2 and the outer punch 1 to ensure their coaxiality, and also to ensure the coaxiality between the inner hole and the outer circle of the sponge ring;

[0025] In addition, the punching openings of the outer punch 1 and the inner punch 2 are arc-shaped, and the outer punch 1 and the inner punch 2 are made of 40Cr material and are quenched.

[0026] When the combined punching tool of the utility model is used, the tool is placed vertically above the sponge to be punched, and the inner punch 1 is hit with a hammer, so that the inner hole and the outer circle of the sponge ring can be punched at the same time. After punching, the spring 3 bounces the inner punch 1 up, and then the part can be directly removed. At this time, the punching of the sponge to be punched is completed.

[0027] The novel solution can realize one-time punching of sponge ring parts, ensuring the coaxiality of the inner hole and outer circle of the sponge ring; at the same time, the combined punching tooling is easy to use, and the punching can be completed by hitting with a hammer once, which is convenient for material removal, thereby realizing high-quality and high-efficiency punching of the sponge ring.

[0028] The above embodiments show and describe the basic principles and main features of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the present invention, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the invention claimed for protection.

Claims

1. A combined punching tool for punching sponge rings, characterized in that: It comprises an outer punch (1), an inner punch (2) and a spring (3); The inner punch (2) is arranged inside the outer punch (1), and a spring (3) is arranged between the inner punch (2) and the outer punch (1).

2. The combined punching tool for punching sponge rings according to claim 1, characterized in that: The inner punch (2) is coaxially sleeved in the through hole of the outer punch (1), and a through hole is arranged at the axis of the inner punch (2) for discharging waste materials.

3. The combined punching tool for punching sponge rings according to claim 1 or 2, characterized in that: The inner punch (2) is arranged in the outer punch (1) through a threaded sleeve.

4. The combined punching tool for punching sponge rings according to claim 2, characterized in that: A slight clearance is provided between the inner punch (2) and the outer punch (1) to ensure their coaxiality.

5. The combined punching tool for punching sponge rings according to claim 1, characterized in that: The punching openings of the outer punch (1) and the inner punch (2) are arc-shaped.

6. The combined punching tool for punching sponge rings according to claim 1, characterized in that: The outer punch (1) and the inner punch (2) are made of 40Cr material and are quenched.

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