Mounting structure with internally-arranged clearance-pre-adjusting type rotating shaft

Abstract

The invention relates to a mounting structure with an internally-arranged clearance-pre-adjusting type rotating shaft, which comprises a support part and the rotating shaft which is mounted in the support part through support components. The mounting structure is characterized in that the three supporting components including a tail support component, a middle support component and an end support component, an annular boss is arranged on the rotating shaft between the middle support component and the end support component, each support component is matched with an inner stepped hole arranged in the support part, and an oil lubrication structure is adopted. Therefore, compared with the prior art, the mounting structure has the advantages that clearance of all bearings can be adjusted to zero before final assembly is realized so that rotating precision of the rotating shaft is enhanced, a traditional grease lubrication mode is changed into an oil lubrication mode so that the service lives of the bearings are greatly prolonged by means of sufficient lubrication of the bearings, and maintenance time and operation difficulty are greatly reduced without detaching the bearings by the aid of regular oil change.

Description

technical field [0001] The invention belongs to the technical field of installation and support of a rotary shaft, in particular to a mounting structure of a built-in pre-adjustment gap type rotary shaft. Background technique [0002] At present, the workpiece support structure of horizontal heavy-duty machine tools adopts; The top is used on the tailstock of the lathe, also known as the live sleeve. In recent years, due to the improvement of bearing precision and convenient operation, external live centers are used to replace dead centers and brackets in the support structure of heavy-duty grinding machines, but the external live centers have the disadvantages of low rigidity and light load-bearing; : The manufacturing precision is high, the cost is high, the installation, commissioning and maintenance are difficult, and the lubrication mostly adopts lipid lubricants, and the operation of regularly replacing the grease is complicated. Contents of the invention [0003] ...

AI Technical Summary

Problems solved by technology

In recent years, due to the improvement of bearing precision and convenient operation, external live centers are used to replace dead centers and brackets in the support structure of heavy grinding machines, but the external live centers have the disadvantages of low rigidity and light load-bearing; the traditional technical requirements for built-in live centers : High manufacturing precision, high cost, difficult installation, commissioning, and maintenance, grease lubricants are mostly used for lubrication, and the operation of regular grease replacement is complicated

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