Rolling mill spindle alignment tool

Abstract

The utility model discloses a kind of rolling mill core rod alignment tools, it is related to the technical field of processing tool, solve the problem that core rod and pipe blank inner surface occur scraping, in the utility model, main body is assembled in the sleeve of rolling mill feed inlet;The inner wall surface of main body is matched with the core rod at the place of rolling mill feed inlet;Main body is used to avoid the core rod at the place of rolling mill feed inlet and the scraping of sleeve inner wall;Main body is used to support core rod, avoid bending under the action of gravity of itself, and the scraping of the inner wall of sleeve occurs, limit core rod by inner wall surface, guarantee the stability of processing process.

Description

Technical Field

[0001] This utility model relates to the technical field of processing tools, and in particular to a centering tool for a rolling mill mandrel. Background Technology

[0002] Aluminum alloy tube rolling technology is a relatively mature process in China. Rolled tubes have high surface finish requirements and strict dimensional tolerance requirements. In industrial applications, they are used directly without machining. However, during the rolling process, the mandrel sinks under gravity and presses against the inner wall of the rolled billet. During rotation, this causes a certain degree of scratching defects on the inner wall of the rolled tube billet. These defects will be reflected on the inner surface of the finished product as the rolling process continues. Utility Model Content

[0003] To address the problem of scraping between the mandrel and the inner surface of the rolled billet, the purpose of this invention is to provide a mandrel alignment tool for rolling mills.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A rolling mill mandrel alignment tool includes: a main body 101, which is assembled inside a sleeve at the rolling mill feed inlet; the inner wall surface 3 of the main body 101 matches the mandrel at the rolling mill feed inlet; the main body 101 is used to prevent the mandrel at the rolling mill feed inlet from scraping against the inner wall of the sleeve;

[0006] The main body 101 includes a front shaft portion 1 and a rear shaft portion 2, both of which are half-cylindrical structures; the rear end face of the front shaft portion 1 and the front end face of the rear shaft portion 2 are connected, and the front shaft portion 1 is assembled inside the sleeve of the mill feed inlet.

[0007] The aforementioned mill core rod alignment tool has a front shaft 1 and a rear shaft 2 that are coaxially arranged; the lateral end face of the front shaft 1 and the lateral end face of the rear shaft 2 are located on the same plane.

[0008] In the aforementioned mill core rod alignment tool, the radius of the inner wall of the front shaft 1 is the same as the radius of the inner wall of the rear shaft 2.

[0009] In the aforementioned mill core rod alignment tool, the radius of the outer wall of the front shaft portion 1 is smaller than the radius of the outer wall of the rear shaft portion 2.

[0010] The aforementioned mill core rod alignment tool, wherein the inner wall surface 3 is composed of the inner wall of the front shaft portion 1 and the inner wall of the rear shaft portion 2.

[0011] The aforementioned mill core rod alignment tool has an inner chamfer 11 on the inner edge of the front end face of the front end shaft 1.

[0012] The aforementioned mill core rod alignment tool has an outer chamfer 12 on the outer edge of the front end face of the front end shaft 1.

[0013] The aforementioned mill core rod alignment tool, wherein the main body 101 is made of nylon.

[0014] In the aforementioned mill mandrel alignment tool, the radius of the inner wall surface 3 is larger than the outer diameter of the mandrel.

[0015] The aforementioned mill core rod centering tool has multiple strip-shaped grooves on its inner wall surface 3 from front to back.

[0016] Because this utility model employs the aforementioned technology, it has the following positive effects compared to existing technologies:

[0017] (1) In this utility model, the main body is assembled inside the sleeve of the mill feed inlet; the inner wall surface of the main body matches the core rod at the mill feed inlet; the main body is used to prevent the core rod at the mill feed inlet from scraping against the inner wall of the sleeve; the main body is used to support the core rod, prevent the core rod from bending under its own weight and scraping against the inner wall of the sleeve, and limit the core rod through the inner wall surface to ensure the stability of the processing process. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a rolling mill mandrel alignment tool according to this utility model.

[0019] Figure 2 This is a front view of a rolling mill mandrel centering tool according to this utility model.

[0020] Figure 3 This is a left-side cross-sectional view of a rolling mill mandrel alignment tool according to this utility model.

[0021] In the attached diagram: 1. Front shaft; 2. Rear shaft; 3. Inner wall surface; 11. Inner chamfer; 12. Outer chamfer; 101. Main body. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0023] Please refer to Figures 1 to 3As shown, a rolling mill mandrel alignment tool is illustrated, comprising: a main body 101, which is made of nylon and has a semi-circular ring structure. The outer diameter of the rear shaft portion 2 is larger than that of the front shaft portion 1 by 40 mm, and the thickness is 30 mm. The outer diameter of the front shaft portion 1 is the same as the inner diameter of the rolling mill feed inlet sleeve, and the length is 100 mm. The annular inner diameter of the inner wall surface 3 of the main body 101 is 3 mm larger than the diameter of the mandrel. The front inner edge of the front shaft portion 1 has a 3×3 mm inner chamfer 11, and the front outer edge of the front shaft portion 1 has a 3×3 mm outer chamfer 12.

[0024] The main body 101 of this utility model has a semi-circular ring structure. The outer diameter of the rear shaft 2 is larger than that of the front shaft 1 by 40 mm. The inner diameter of the inner wall 3 of the main body 101 is 3 mm larger than that of the core rod. Furthermore, the front end of the front shaft 1 is chamfered at 3×3 mm both inside and out to prevent the core rod from scratching the inner surface of the rolled tube blank.

[0025] This invention will lift the mandrel to prevent it from scraping against the inner surface of the mill feed inlet sleeve.

[0026] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.

[0027] Based on the above, this utility model also has the following embodiments:

[0028] In a further embodiment of this utility model, the dimensions of the inner wall surface 3 of the main body 101 can be designed according to actual processing requirements; the length of the front shaft 1, the outer diameter of the front shaft 1 and the outer diameter of the rear shaft 2 can also be designed according to actual processing requirements.

[0029] In a further embodiment of this utility model, the main body 101 is assembled inside the sleeve of the mill feed inlet; the inner wall surface 3 of the main body 101 matches the core rod at the mill feed inlet; the main body 101 is used to prevent the core rod at the mill feed inlet from scraping against the inner wall of the sleeve; the main body 101 is used to support the core rod, preventing the core rod from bending under its own weight and scraping against the inner wall of the sleeve, and the inner wall surface 3 limits the core rod to ensure the stability of the processing.

[0030] In a further embodiment of this utility model, the inner diameter of the inner wall surface 3 is larger than the processing size of the core rod. That is, if the core rod does not bend during processing, the core rod will not contact the inner wall surface 3. When the reserved size of the core rod is long, the core rod will bend under its own weight and will directly contact the inner wall surface 3. Preferably, the inner wall surface 3 is provided with multiple strip grooves from front to back to reduce the contact area between the inner wall surface 3 and the core rod and reduce the friction of the contact surface.

[0031] In a further embodiment of this utility model, the main body 101 is made of nylon. This material exhibits excellent mechanical properties, hydrophilicity, lubricity, wear resistance, corrosion resistance, oil resistance, and barrier properties. It is non-toxic and odorless, and also has good processing performance, making it widely used in various industries. Specifically, in this utility model, nylon has a wide range of sources, is lightweight and easy to process, and possesses good mechanical properties, wear resistance, and corrosion resistance, ensuring the stability of the core rod processing.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centering tool for a rolling mill mandrel, characterized in that, include: The main body (101) is assembled inside the sleeve at the feed inlet of the rolling mill; The inner wall surface (3) of the main body (101) matches the core rod at the feed inlet of the rolling mill; the main body (101) is used to prevent the core rod at the feed inlet of the rolling mill from scraping against the inner wall of the sleeve; The main body (101) includes: a front shaft portion (1) and a rear shaft portion (2), both of which are half-cylindrical structures; The rear end face of the front shaft part (1) is connected to the front end face of the rear shaft part (2), and the front shaft part (1) is assembled in the sleeve of the mill feed port.

2. The mill mandrel alignment tool according to claim 1, characterized in that, The front shaft (1) and the rear shaft (2) are coaxially arranged; the lateral end face of the front shaft (1) and the lateral end face of the rear shaft (2) are located in the same plane.

3. The mill mandrel alignment tool according to claim 2, characterized in that, The radius of the inner wall of the front shaft (1) is the same as the radius of the inner wall of the rear shaft (2).

4. The mill mandrel alignment tool according to claim 2, characterized in that, The radius of the outer wall of the front shaft (1) is smaller than the radius of the outer wall of the rear shaft (2).

5. The mill mandrel alignment tool according to claim 3, characterized in that, The inner wall surface (3) is composed of the inner wall of the front shaft portion (1) and the inner wall of the rear shaft portion (2).

6. The mill mandrel alignment tool according to claim 1, characterized in that, An inner chamfer (11) is provided on the inner edge of the front end face of the front end shaft (1).

7. The mill mandrel alignment tool according to claim 1, characterized in that, The front end shaft (1) has an outer chamfer (12) on the outer edge of the front end face.

8. The mill mandrel alignment tool according to claim 1, characterized in that, The main body (101) is made of nylon.

9. The mill mandrel alignment tool according to claim 1, characterized in that, The radius of the inner wall surface (3) is greater than the outer diameter of the core rod.

10. The mill mandrel alignment tool according to claim 1, characterized in that, The inner wall surface (3) has multiple strip-shaped grooves from front to back.

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