Roller grinding method

Abstract

The present invention provides a roller grinding method for obtaining rollers with good circular degree. The method comprises the first process that the center of first roller (17) is determined, the external surface (17c) and two ends of a bearing part (17b) of the first roller (17) are grinded to control the circular degree of the first roller (17) under the room temperature within 25 micron, the second process that the bearing part (17b) is installed with a bearing (19) and a bearing housing (23), the third process that the bearing housing (23) is fixed on a base plate (5), the fourth process that the first roller (17) is rotated, and the fifth process that the second roller (3) having a circular degree within 3 micron and is provided with a grinding mechanism (29) on the external surface (3c) is rotated, the second roller (3) is pressed on the external surface (17c) of the first roller (17) for grinding the external surface (17c).

Description

technical field [0001] The present invention relates to roll grinding methods. Background technique [0002] Conventionally, in the roll grinding of a rolling mill, there is a roll grinding device capable of grinding a work roll in a state in which a work roll is assembled in a roll chock (for example, refer to Patent Document 1). [0003] Furthermore, there is an in-line roll grinder capable of grinding work rolls and backup rolls incorporated in a rolling mill (for example, refer to Patent Document 2). [0004] In these devices, the rolls are ground while the rolls are assembled in a rolling mill in order to prevent a decrease in production efficiency due to reorganization of the rolls or transport to a roll maintenance factory. [0005] Furthermore, there is a method of grinding a roll in which temperature-controlled grinding fluid is sprayed across the entire length of the main body surface of the roll in order to sharpen the roll taken out of the rolling mill in a shor...

AI Technical Summary

Problems solved by technology

For example, when the temperature rises by 60°C, a roundness error of ±30 microns sometimes occurs

[0024] In particular, when the structure of the rear roller 101 is complicated, the deformation of the rear roller 101 due to temperature rise may also become large.

Although the influence of temperature is small when the structure of the rear roller is simple, the influence of temperature is large when the structure of the rear roller is complex

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