Method for machining hot-mounted dam roller

Abstract

The invention relates to a method for machining a hot-mounted dam roller. The method for machining the hot-mounted dam roller comprises the steps of machining of a roller cylinder, machining of spindle heads and assembling of the roller cylinder and the spindle heads; assembling of the roller cylinder and the spindle heads comprises the following steps that the spindle heads and the roller cylinder are in interference fit to obtain the dam roller; unbalance amount of the dam roller is detected, center offset amount and the offset direction of the dam roller are calculated, when the unbalance amount is larger than 10 g based on a balance amount, a double-four-jaw chunk clamping device on a lathe is adopted to conduct eccentric borrowing on the dam roller, outer circle turning is conducted to remove the unbalance amount; and finish turning is conducted on a second outer circle of the roller cylinder and eighth outer circles, ninth outer circles and tenth outer circles of the spindle heads by adopting a numerical control lathe turning. The method for machining the hot-mounted dam roller has the advantage of high balance precision.

Description

technical field [0001] The invention relates to a processing method of a heat-loading type dam roller. Background technique [0002] The stainless steel BST unit of a steel plant belongs to the UCM rolling mill. In the past, in the export processing projects, the high-precision dam rollers involved in this complete set of equipment were basically imported from abroad. The dam roller is a high-precision thin-walled part, such as figure 1 As shown, the dam roller is composed of a roller and a shaft head. The existing processing flow is divided into roller processing, shaft head processing, and roller and shaft head assembly. The existing processing technology has the following problems and deficiencies: [0003] 1. Due to the characteristics of the material, the product is easy to shrink and distort during the heat treatment process, and it is difficult to ensure the uniformity of the quenching depth and hardness requirements of the product, which may easily lead to product s...

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Problems solved by technology

[0005] 3. The heat treatment and quenching of the product has a soft band, which brings certain defects to the product quality

[0006] 4. The balance accuracy of the product is not high, and it needs to go through multiple balances, which is easy to produce eccentricity errors, which will have a certain impact on the uniformity and depth of the quenching hardness of the outer circle

[0007] 5. The product process is longer, the production efficiency is lower, the management range is larger, and the cost control is more difficult

[0008] 6. The process of the product is long, and the change of the benchmark can easily lead to product balance and uneven hardness, or even scrap

This way of correcting the offset of the axis line, due to the clearance of the XY axis of the machine tool, the rigidity accuracy of the machine tool spindle, and the influence of the flatness accuracy and rotation accuracy of the machine tool table itself, the deviation of the axis center line of the dam roller is corrected. The displacement is inaccurate, and it needs to be corrected repeatedly or multiple times

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