Forging forming blank making device

Abstract

The utility model relates to the technical field of forging forming, in particular to a forging forming blank making device which comprises a sleeve, and an annular lining is detachably arranged on the inner wall of the sleeve. After the annular lining is worn after being used for a period of time, the annular lining can be detached from the interior of the sleeve and replaced with a new annular lining, compared with direct replacement of the sleeve, the cost is lower, meanwhile, the annular lining is simple in process and easy to manufacture in batches, and the production progress can be accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of forging and forming, in particular to a forging and forming blank making device. Background Art

[0002] Vertical rolling replaces horse frame reaming, and has higher requirements for billet quality, so a large number of sleeves are designed in combination with billet making equipment. A certain high-temperature alloy special-shaped forging has a large batch output. After the sleeve is used for a long time, the inner wall of the sleeve is severely worn and deformed. The wear of the inner wall of the sleeve causes the sleeve size to be inconsistent with the drawing, and the quality of the billet after billet making is poor. First, the inner wall of the sleeve is worn. After the billet is made, the friction between the outer diameter surface of the billet and the inner wall of the sleeve during the ejection process can easily cause the outer diameter surface of the billet to be scratched, increasing the workload of grinding; second, after the sleeve is worn, the volume of the sleeve cavity becomes larger, and the sharp corners of the billet after billet making cannot achieve the filling effect, which directly affects the subsequent rolling forming.

[0003] Replacing the sleeve can solve the problem of poor blank quality, but the cost of sleeve replacement is high, and the sleeve production cycle seriously affects the production progress.

[0004] Therefore, a technical solution is currently needed to solve the technical problem that the inner wall of the sleeve is easily worn during the process of forming the blank, and directly replacing the sleeve leads to increased costs and affects production efficiency. Utility Model Content

[0005] The utility model aims to provide a forging forming device to solve the technical problems in the prior art that the inner wall of the sleeve is easily worn during the process of forming the blank, and directly replacing the sleeve leads to increased costs and affects production efficiency.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A forging forming blank making device comprises a sleeve, wherein the inner wall of the sleeve is detachably provided with an annular liner.

[0008] The utility model discloses a forging forming blank making device. When in use, an annular liner is installed on the inner wall of a sleeve. After the sleeve is hoisted into place, a pressing sleeve is loaded on the outside of the sleeve. Finally, a blank is formed in the annular liner. After the annular liner of the present application is worn out after being used for a period of time, it can be removed from the inside of the sleeve and replaced with a new one. Compared with directly replacing the sleeve, the cost is lower. At the same time, the annular liner has a simple process and is easy to manufacture in batches, which can speed up the production progress.

[0009] As a preferred solution of the utility model, a first conical surface is provided inside the sleeve, and a second conical surface matching the first conical surface is provided outside the annular liner. The annular liner is nested in the sleeve through the second conical surface, so that after the annular liner is worn, it is easier to eject the annular liner from the sleeve.

[0010] As a preferred solution of the utility model, the taper of the first cone surface is set to 5°±2°, so that the outer wall of the annular liner has a sufficient slope, reducing the difficulty of removing the annular liner.

[0011] As a preferred solution of the utility model, a third conical surface is provided inside the annular liner. The inside of the annular liner is a forming space for the blank, and the blank abuts against the inner wall of the annular liner during the forming process. In this solution, the inner wall of the annular liner is provided as an inclined conical surface, so that the formed blank is easier to be ejected from the annular liner.

[0012] As a preferred solution of the utility model, the taper of the third conical surface is set to 1°±0.5°. Controlling the taper of the third conical surface to about 1° can, on the one hand, make it easier for the blank to separate from the annular liner, and at the same time, can minimize the forming deviation of the outer wall of the blank, reduce the subsequent correction and grinding of the blank, and facilitate the subsequent use of the blank.

[0013] As a preferred solution of the utility model, from the top surface of the sleeve to the bottom surface of the sleeve, the inner hole of the sleeve gradually decreases, and the inner hole of the annular liner gradually increases. That is, the normal direction of the conical surface of the inner wall of the sleeve is set obliquely downward, and the normal direction of the conical surface of the inner wall of the annular liner is set obliquely upward, so that when the blank inside the annular liner is ejected, the annular liner is restricted by the first conical surface of the inner wall of the sleeve, so that the annular liner will not be separated from the sleeve along with the blank.

[0014] As a preferred solution of the utility model, the thickness of the thinnest part of the annular liner is set to 30 mm ± 5 mm, so as to ensure that the liner has sufficient thickness, reduce the manufacturing difficulty of the liner, and ensure the load-bearing capacity of the liner.

[0015] As a preferred solution of the utility model, the bottom of the sleeve is provided with an annular step, and the bottom wall of the annular step is flush with the end wall of the bottom of the sleeve. The annular step can increase the contact area between the bottom of the sleeve and the workbench, so that the sleeve is placed more stably on the workbench during the blank forming process, thereby improving the forming quality of the blank.

[0016] As a preferred solution of the utility model, the annular liner is a 5CrNiMo material structural part. The annular liner made of 5CrNiMo has good toughness, strength, wear resistance and hardenability, which can greatly increase the service life of the annular liner and improve the blank forming quality.

[0017] As a preferred solution of the utility model, the outer wall of the sleeve is provided with a lifting screw hole. A lifting ring for lifting the sleeve can be installed through the lifting screw hole. After the lifting is completed, the lifting ring connecting pin can be removed from the sleeve to avoid the existence of the lifting ring affecting the assembly of the press sleeve on the sleeve.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0019] After the annular liner of the present application is worn out after a period of use, it can be removed from the inside of the sleeve and replaced with a new one. This is less costly than directly replacing the sleeve. At the same time, the annular liner has a simple process and is easy to mass produce, which can speed up production progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a forging forming blank making device of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the sleeve of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the annular liner of the utility model;

[0023] Markings in the figure: 1-sleeve, 11-first cone surface, 12-annular step, 13-lifting screw hole, 2-annular liner, 21-second cone surface, 22-third cone surface, 23-assembly hole. DETAILED DESCRIPTION

[0024] The utility model is described in detail below in conjunction with the accompanying drawings.

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] Example 1

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment is a forging forming blank making device, including a sleeve 1, the inner wall roughness of the sleeve 1 is ≤1.6, the heat treatment supply status: tempering treatment, the hardness is controlled at HRC35~37, the bottom of the sleeve 1 is provided with an annular step 12 flush with the end wall of the sleeve 1, the outer wall of the sleeve 1 is provided with a lifting screw hole 13, the inner wall of the sleeve 1 is detachably provided with an annular liner 2, the annular liner 2 is a 5CrNiMo material structural part, the inner and outer wall roughness of the annular liner 2 is ≤1.6, the heat treatment supply status: tempering treatment, the hardness is controlled at HRC47~52.

[0028] When in use, the annular liner 2 is installed on the inner wall of the sleeve 1. After the sleeve 1 is hoisted into place, the pressing sleeve is loaded on the outside of the sleeve 1, and finally the blank is formed in the annular liner 2. After the annular liner 2 of the present application is worn out after a period of use, it can be removed from the inside of the sleeve 1 and replaced with a new annular liner 2. Compared with directly replacing the sleeve 1, the cost is lower. At the same time, the annular liner process is simple and easy to mass produce, which can speed up the production progress.

[0029] Example 2

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that a first conical surface 11 is provided inside the sleeve 1 , and a second conical surface 21 matching the first conical surface 11 is provided outside the annular liner 2 .

[0031] In this embodiment, the annular liner 2 is nested in the sleeve 1 through the second conical surface 21 , so that after the annular liner 2 is worn, it is easier to eject the annular liner 2 from the sleeve 1 .

[0032] Specifically, the taper of the first tapered surface 11 is set to 5°±2°, so that the outer wall of the annular liner 2 has a sufficient slope, thereby reducing the difficulty of removing the annular liner 2.

[0033] Example 3

[0034] like Figure 3 As shown, the difference between this embodiment and Embodiment 2 is that a third conical surface 22 is provided inside the annular liner 2 .

[0035] The interior of the annular liner 2 is the forming space for the blank. During the forming process, the blank abuts against the inner wall of the annular liner 2. In this embodiment, the inner wall of the annular liner 2 is configured as an inclined conical surface to make it easier for the formed blank to be ejected from the annular liner 2.

[0036] Specifically, the taper of the third conical surface 22 is set to 1°±0.5°. The taper of the third conical surface 22 is controlled at about 1°. On the one hand, it makes it easy for the blank to separate from the annular liner, and at the same time, the forming deviation of the outer wall of the blank can be minimized, and the subsequent correction and grinding of the blank can be reduced, which is beneficial to the subsequent use of the blank.

[0037] Example 4

[0038] like Figure 1 , Figure 2 and Figure 3As shown, in this embodiment, the difference from Embodiment 3 is that, from the top surface of the sleeve 1 to the bottom surface of the sleeve 1, the inner hole of the sleeve 1 gradually decreases, and the inner hole of the annular liner 2 gradually increases, that is: the normal of the conical surface of the inner wall of the sleeve 1 is set obliquely downward, and the normal of the conical surface of the inner wall of the annular liner 2 is set obliquely upward.

[0039] In this embodiment, when the blank inside the annular liner 2 is ejected, the annular liner 2 is restricted by the first conical surface 11 of the inner wall of the sleeve 1, so that the annular liner 2 will not separate from the sleeve 1 along with the blank.

[0040] Specifically, the thickness of the thinnest part of the annular liner 2 is set to 30 mm±5 mm, so as to ensure that the annular liner 2 has sufficient thickness, reduce the difficulty of manufacturing the annular liner 2, and ensure the ability of the annular liner 2 to bear loads.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A forging forming device, characterized in that: The invention comprises a sleeve (1), wherein the inner wall of the sleeve (1) is detachably provided with an annular liner (2), the interior of the sleeve (1) is provided with a first conical surface (11), the exterior of the annular liner (2) is provided with a second conical surface (21) adapted to the first conical surface (11), and the interior of the annular liner (2) is provided with a third conical surface (22), and in a direction from the top surface of the sleeve (1) to the bottom surface of the sleeve (1), the inner hole of the sleeve (1) gradually decreases, and the inner hole of the annular liner (2) gradually increases.

2. The forging forming device according to claim 1, characterized in that: The taper of the first tapered surface (11) is set to 5°±2°.

3. The forging forming device according to claim 1, characterized in that: The taper of the third tapered surface (22) is set to 1°±0.5°.

4. The forging forming device according to claim 1, characterized in that: The thickness of the thinnest part of the annular lining (2) is set to 30 mm±5 mm.

5. The forging forming device according to any one of claims 1 to 4, characterized in that: An annular step (12) is provided at the bottom of the sleeve (1), and the bottom wall of the annular step (12) is flush with the bottom end wall of the sleeve (1).

6. The forging forming blank making device according to any one of claims 1 to 4, characterized in that: The annular liner (2) is a structural component made of 5CrNiMo material.

7. The forging forming device according to any one of claims 1 to 4, characterized in that: The outer wall of the sleeve (1) is provided with a lifting screw hole (13).

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