Machining method for stepped inner hole of shaft section

Abstract

The invention discloses a machining method for a step inner hole of a shaft section, and belongs to the field of machining. The processing method comprises the steps that a first frame position is machined on the outer circle of the first end of the shaft section, the first frame position is coaxially arranged with the inner hole of the shaft section, the second end of the shaft section is installed on the machine tool, the center frame of the machine tool is clamped on the first frame position; a through hole is bored in the inner hole of the shaft section, a second frame position is machinedon the outer circle of the first end of the shaft section, the second frame position and the through hole are coaxially arranged, the second end of the shaft section is installed on the machine tool,the center frame of the machine tool is clamped on the second frame position, a first blind hole is bored in the through hole, a third frame position is machined on the outer circle of the first endof the shaft section, the third frame position and the through hole are coaxially arranged, the second end of the shaft section is installed on the machine tool, the center frame of the machine tool is clamped on the third frame position, and a second blind hole is bored in the first blind hole. The coaxiality of the stepped inner holes can be improved.

Description

technical field [0001] The invention belongs to the field of mechanical processing, in particular to a processing method for a stepped inner hole of a shaft section. Background technique [0002] There is an existing shaft section, the inner hole of which includes three stepped holes, namely a through hole with an inner diameter of 110mm, a first blind hole with an inner diameter of 150mm and a second blind hole with an inner diameter of 160mm. Design requirements The through hole, the first blind hole and the second blind hole are arranged coaxially with the outer circle of the shaft section. [0003] When boring a three-segment stepped hole, it is usually used to first bore a through hole in the inner hole of the shaft segment, and then use the central axis of the through hole as a reference to sequentially bore the second blind hole and the third blind hole. [0004] However, since the second blind hole and the third blind hole are blind holes, it is not easy to process ...

AI Technical Summary

Problems solved by technology

[0004] However, since the second blind hole and the third blind hole are blind holes, it is not easy to process with the central axis of the through hole as the reference, and is affected by the cutting force and the drop of the cutter head. During processing, the second blind hole and the third blind hole The central axis of the blind hole is easy to deviate from the central axis of the through hole, so that the processed second blind hole and the third blind hole cannot maintain a high coaxiality with the through hole

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