Repairing method for wear and tear of the bearing hole of the output shaft of the reduction box of the coiler

Abstract

The invention discloses a recoiling machine reducer casing output shaft bearing hole abrasion repairing method. The repairing method includes that a hole drilling machine is installed on a tooling support through a building construction platform and the tooling support, twice hole drillings are respectively conducted on two bearing holes by adjusting a machining center, a steel jacket which is in an interference fit with the hole drilling is manufactured, and thereby according to the steel jacket which is in the interference fit with the hole drilling, on-line repairing of abrasion of a bearing hole is achieved and the existing accuracy of the bearing hole is guaranteed. After the steel jacket is again abraded, only the steel jacket needs to be replaced and maintenance is very convenient.

Description

technical field [0001] The invention relates to wear repairing technology, more specifically, relates to a method for repairing wear of a bearing hole of an output shaft of a reduction box of a coiler. Background technique [0002] Carrousel coiler, also known as double-drum rotary coiler, is the most advanced cold-rolling coiler in the world at present, and is used in a fully continuous cold-rolling production line. The equipment is a large-scale high-speed rotary machine with a complex internal drive system (many transmission stages, long transmission shafts, and complex structure), and it is a metallurgical mechanical equipment that is difficult to design and manufacture. [0003] see figure 1 As shown, the coiler is composed of rotary motor 1, coupling 2, planetary gear mechanism 3, revolving motor 4, tension reel 5 and other components. It has the advantages of compact structure design and saving equipment installation space. When it is used in a retrofit project, it ...

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Problems solved by technology

[0004] see figure 2 As shown, however, in actual use, the two bearing holes 7 of the DS-side output shaft (positioning side) of the gear box 6 of the above-mentioned planetary gear mechanism are in a transition fit with the bearing. When the bearing rotates, the bearing outer There is a phenomenon of lapping between the ring and the bearing hole 7. Since the hardness of the outer ring of the bearing is harder than that of the box body, the bearing hole is severely worn, and the more worn the more serious it is, the easier it is to cause the output shaft of the reel 5 to vibrate. Large, unstable operation, serious damage to gears and bearings

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