CN201871538U - Taper sleeve for high-speed wire finishing mill - Google Patents

Abstract

A taper sleeve for an altitude finishing mill belongs to the technical field of metal processing and aims to solve the problems that a roll collar cannot be pressed and roll shaking is easy to cause in the existing taper sleeve. The technical scheme is as follows: the taper sleeve is a cylinder with a conical surface on the inner surface, and after improvement, an axial opening is arranged on the cylinder wall at one end with a larger inner diameter. The utility model discloses add the axial opening at the tip of traditional altitude finishing mill taper sleeve, made the taper sleeve easily expand in assembling process, thoroughly solved the insecure phenomenon of collars installation, the assembly of taper sleeve is less with the dismantlement resistance moreover, has effectively avoided because of the too big damage of bringing for collars and taper sleeve of dismouting power, has improved the life of collars holder and taper sleeve and the machining precision of product greatly, has reduced equipment maintenance cost.

Description

A Taper Sleeve Used in High Line Finishing Mill

technical field

The utility model relates to a taper sleeve used in a wire rod rolling finishing mill, which belongs to the technical field of metal processing.

Background technique

The taper sleeve of the high-end finishing mill is a component installed between the roll ring and the shaft. The assembly relationship among the shaft, taper sleeve, roll ring and roll ring cage is shown in Figure 1. The structure of the taper sleeve of the traditional high-speed wire finishing mill is shown in Figure 2. It is a cylinder with a tapered inner surface. It is pressed on the shaft during assembly, and the taper sleeve is expanded by the radial force of the shaft, so that the shaft , the taper sleeve and the roller ring cage are closely combined.

Due to the long taper sleeve, the traditional taper sleeve is not easy to be pressed in place during actual use. When the taper sleeve is not pressed in place, its expansion size is small, and the contact area with the roller ring cage is also small, and the installation of the roller ring is not firm. Therefore, when assembling the roller ring, it is necessary to apply a lot of pressure to the taper sleeve, but this is easy to deform the taper sleeve, and it is difficult to disassemble the deformed taper sleeve, and it takes a lot of force to separate it from the roller ring. come out, so it is easy to scratch the tapered sleeve and the roller ring, and radial fluctuations will appear when the severely damaged tapered sleeve and roller ring are used again, which will not only affect the product quality, but also greatly reduce the durability of the tapered sleeve and the roller ring. service life.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an easy-to-assemble and disassemble taper sleeve for high-line finishing mills.

Problem described in the utility model is realized with following technical scheme:

The utility model relates to a taper sleeve used in a high-speed wire finishing mill, which is a cylinder with a tapered inner surface. After improvement, an axial gap is opened on the cylinder wall at the end with a larger inner diameter.

For the taper sleeve used in the high-end finishing mill, the outline of the end of the axial notch is an arc.

For the taper sleeve used in the high-speed wire finishing mill, 3-5 axial notches are provided, and they are evenly distributed along the circumferential direction.

For the above-mentioned taper sleeve used in high-speed wire finishing mills, the length of the axial notch is 1/2 to 2/3 of the length of the taper sleeve, and the width is 1-3mm.

The utility model adds an axial gap to the end of the taper sleeve of the traditional high-line finishing mill, which makes the taper sleeve easy to expand during the assembly process, completely solves the phenomenon that the roll ring is not firmly installed, and the assembly and disassembly resistance of the taper sleeve is relatively low. Small size, which effectively avoids damage to the roller ring and taper sleeve due to excessive dismounting force, greatly improves the service life of the roller ring cage and taper sleeve and the processing accuracy of the product, and reduces equipment maintenance costs.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is the assembly diagram between the utility model and the shaft, the roller collar and the roller collar cage;

Fig. 2 is a structural schematic diagram of a taper sleeve of a traditional high-speed wire finishing mill;

Fig. 3 is a schematic structural view of the utility model.

The labels in the figure are: 1. Taper sleeve; 2. Roll ring; 3. Roll ring cage; 4. Shaft; 5. Axial notch.

Detailed ways

Referring to Fig. 2 and Fig. 3, the utility model aims at the problem that the roller ring cannot be pressed and the roller shakes existing in the existing taper bushing, and the taper bushing has been improved: on the basis of the original taper bushing, the inner diameter of the taper bushing is larger 3-5 axial notches 5 are evenly opened at one end of the shaft, the length of the axial notches 5 is 60mm (actually one-half to two-thirds of the length of the tapered sleeve), and the width is 2mm (actually 1-3mm), The end of the opening is processed into a round mouth with a length of 12mm to prevent the taper sleeve 1 from cracking due to the stress concentration at the end when it is expanded under pressure. When gradually entering the taper sleeve 1, an outward radial force will be applied to the inner surface of the taper sleeve 1, so that the four parts of the taper sleeve 1 that have been opened (when four axial gaps are opened) are evenly expanded. The sleeve 1 has been opened, so the expansion size of the tapered sleeve 1 is relatively large, and it can be well combined with the roller ring cage 3, thereby solving the problem that the roller ring cannot be pressed.

When the original taper sleeve is pressed, the pressure needs to reach 450Bar, and the actual measurement of the overall expansion of the taper sleeve is 0.3mm, but the utility model does not have the phenomenon that the taper sleeve does not expand in place, and the actual pressure reaches 300Bar, which meets the requirements. In the process of disassembling the taper sleeve, the original taper sleeve needs to use a press, and a great pressure can be used to separate the taper sleeve from the surface of the roller ring, while the utility model only needs to be detached by lightly tapping with a hand or a copper rod , to avoid scratches on the surface of the roller ring 2 and the taper sleeve 1, and the surface of the roller ring 2 and the taper sleeve 1 is smooth, which solves the problem of roll shaking and stabilizes the size of the finished product. In addition, the application of the split taper sleeve reduces the deformation of the taper sleeve due to excessive pressure of the roller ring, improves the service life of the roller ring and the taper sleeve, and saves costs.

Claims (4)

1. A taper sleeve for a high-speed wire finishing mill, which is a cylinder with a tapered inner surface, characterized in that an axial gap (5) is opened on the cylinder wall at the end with a larger inner diameter. 2. The taper sleeve for high-speed wire finishing mill according to claim 1, characterized in that, the contour line at the end of the axial notch (5) is an arc. 3. The taper sleeve for high-speed wire finishing mill according to claim 1 or 2, characterized in that 3-5 axial notches (5) are provided, and they are evenly distributed along the circumferential direction. 4. According to claim 3, the taper sleeve for high-line finishing mill, characterized in that, the length of the axial notch (5) is 1/2 to 2/3 of the length of the taper sleeve, and the width is 1 -3mm.

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