Split overlength shaft sleeve and bearing ring inner bore processing auxiliary device and processing method

Abstract

The invention relates to a split overlength shaft sleeve and bearing ring inner bore processing auxiliary device and a processing method. The processing auxiliary device comprises a V-shaped support (9), wherein the V-shaped support (9) is connected to an ash lock shell (7) which is connected with an inner oscillating bar shield (6), the inner oscillating bar shield (6) is connected with a bearing ring (5), a shaft sleeve (4) is connected to the ash lock shell, the shaft sleeve and the bearing ring are arranged on the same axes, the inner end face and the outer end face of the shaft sleeve and the end face of the bearing ring are respectively used for fixing an auxiliary supporting device (1) by using bolts, a lengthening cutter bar (2) penetrates through the auxiliary supporting device and is finally connected with a main shaft of a floor digital control boring and milling machine (3), the lengthening cutter bar is provided with a group of boring cutter installing square grooves (10), and boring cutters are arranged in the boring cutter installing square grooves. The invention is used for boring and milling inner bores with large length, big span and high requirement for concentricity.

Description

Technical field: [0001] The invention relates to mechanical processing technology, in particular to a processing method and an auxiliary device for a split-type super-long shaft sleeve and a bearing ring on a chemical container. Background technique: [0002] The ash lock is an important supporting equipment of the Lurgi type crushed coal pressurized gasifier. The burnt coal ash of the pressurized gasifier enters the ash lock for cooling, and is discharged after crushing. The gray lock mainly includes gray lock housing 7, inner swing rod shield 6, shaft sleeve 4, bearing ring 5 and other functional parts. The inner swing rod shield 6 is the basic component inside the gray lock housing 7, and the bearing ring 5 is installed On the inner swing rod shield 6, the shaft sleeve 4 is welded on the gray lock housing 7 (see figure 1 shown). When the gray lock is working, the rotary shaft of the hydraulic inner swing rod passes through the shaft sleeve 4 and the bearing ring 5 in tu...

AI Technical Summary

Problems solved by technology

The diameter of the gray lock is between 2.6 and 3 meters, the length of the shaft sleeve is between 750 mm and 850 mm, and the distance between the outer end surface of the shaft sleeve 4 and the bearing ring 5 is about 1650 mm to 1850 mm. Since the inner hole of the shaft sleeve 4 has a long processing length, it is different from the The coaxial bearing ring 5 is a split structure and the distance is very far away. It is impossible to achieve the coaxiality between the shaft sleeve 4 and the bearing ring 5 and the axis between the two shaft sleeves 4 and the bearing ring 5 through conventional machining. Center distance size and parallelism requirements

In the prior art, the shaft sleeve 4 and the bearing ring 5 are usually bored separately and then welded on the gray lock housing 7 through the mandrel. However, after the gray lock is welded, an integral heat treatment for stress relief is required. After the heat treatment, each component Unpredictable deformation and displacement occur in both, so the shaft sleeve 4 and bearing ring 5 cannot guarantee the coaxiality required for the normal operation of the rotary shaft, so the bearing ring needs to be ground many times after heat treatment and even reinstalled and welded

This manufacturing method has many shortcomings such as heavy workload in the later stage, low precision of parts, large fit clearance, and inability to ensure smooth rotation of the inner swing rod.

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