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A roller comprising a drive shaft and a roller ring, as well as a method for assembling such a roller

A technology for transmission shafts and rolls, applied in the direction of rolls, shafts and bearings, metal rolling, etc., can solve the problems of weakening roll structure, harmful stress, etc.

Inactive Publication Date: 2012-02-08
SANDVIK INTELLECTUAL PROPERTY AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sometimes the locking device may also cause harmful stress phenomena in the roller ring
In addition, concave-like recesses in particular of individual components may weaken the roll structure as a whole

Method used

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  • A roller comprising a drive shaft and a roller ring, as well as a method for assembling such a roller
  • A roller comprising a drive shaft and a roller ring, as well as a method for assembling such a roller
  • A roller comprising a drive shaft and a roller ring, as well as a method for assembling such a roller

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] In the drawings, 1 generally denotes a roll or a drive shaft, and 2 denotes a roll ring mounted on the outside of the roll or drive shaft. In the example, said roll ring 2 comprises an inner ring 3 and two outer rings 4, in the envelope surface of which outer rings 4 are formed circumferential roll grooves 5 for rolling elongated products.

[0019] The transmission shaft 1 comprises a roller in the form of a cylindrical envelope 6 (see Figure 4 ), the roller is concentric with the central axis C1 of the shaft, and the roller transforms into an envelope surface with a journal 7 of reduced diameter at opposite ends. In this case, the ends of the shaft comprise two flat end faces 8 of journals 7 . The overall length L1 of the shaft depends on the distance between the two end faces 8 . Since each journal 7 has a certain length L2, the axial extension or length L3 of the envelope surface 6 is smaller than the overall length L1 of the shaft. The outer diameter of the shaf...

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Abstract

The invention relates to a roller of the type that comprises, on one hand, a drive shaft (1), which has a cylindrical envelope surface (6) having a certain outer diameter and a certain length, and, on the other hand, a shorter roller ring (2), which includes an outer ring (4) of a hard material and an inner ring (3) concentric with the same and of a more ductile material, which includes a cylindrical inside having a certain inner diameter and is, on one hand, permanently united to the outer ring (4) in a metallurgical way, and, on the other hand, rotationally rigidly connected with the drive shaft (1) in order to, from the same, transfer torque to the outer ring (4). According to the invention, the rotationally rigid joint between the drive shaft (1) and the roller ring (2) solely consists of a shrink-fit joint that is established between the envelope surface of the drive shaft and the inside of the inner ring and has an interference of at least 0,01 % of the outer diameter of the drive shaft (1).

Description

technical field [0001] In a first aspect, the invention relates to a roll comprising, on the one hand, a drive shaft having a cylindrical envelope with a certain outer diameter and a certain length, and on the other hand comprising a roll Ring, the roll ring comprises an outer ring made of a hard material and an inner ring concentric with the outer ring and made of a tougher material, the inner ring includes a cylindrical interior with a certain inner diameter, and on the one hand, the inner ring The ring is metallurgically permanently integrated with the outer ring, on the other hand said inner ring is rotatably rigidly connected to the transmission shaft, so as to transmit the driving torque from the transmission shaft to the outer ring. [0002] In another aspect, the invention also relates to a method of assembling the roll. Background technique [0003] Rolls of the type described above are generally designated as combined rolls by those skilled in the art and are used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B27/03B23P11/02
CPCB21B27/035F16C13/00Y10T29/49552B21B27/03B23P11/025
Inventor 米林科·普鲁西克
Owner SANDVIK INTELLECTUAL PROPERTY AB
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