Tool and machining method of special static blade installing hole socket of central machine shell

Abstract

The invention discloses a machining tool and a machining method of a special static blade installing hole socket of a central machine shell. The machining method comprises the following steps that machining is carried out on the hole sockets which is far away from a split face in the central machine shell; and the machining is carried out on the hole sockets adjacent to the split face in the central machine shell; the machining of the hole sockets adjacent to the split face in the central machine shell comprises the following steps that a positive scribing socket cutter is installed on a threaded hole part, on a transition shaft, of the end part of a lengthened boring rod; the lengthened boring rod is positioned with a workpiece base hole through a positioning shaft; and the hole socket ismachined in a manner that the extending length of the positive scribing socket cutter is lengthened in the radial direction gradually along the hole socket to be machined; and the invention further discloses a machining tool. The method aims at the hole socket which is far away from the split face in the central machine shell, the machining is carried out by utilizing a boring machine main shaft,the hole socket which is close to the split face in the central machine shell and interfered with the boring machine main shaft is aimed, a combined body of the lengthened boring rod and the positivescribing socket cutter is designed to carry out the machining, so that the high-precision and high-efficiency machining of the special static blade installing hole socket is realized.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a processing method and a cutting tool for a special static vane installation hole socket of a central casing. Background technique [0002] The central casing of the axial flow compressor has circumferential holes arranged in the axial direction on the circumference, which are used to install the stator vane. The circular inner hole is used to process the stator vane installation hole, but the stator vane installation hole of the central casing of the SACC scale prototype is larger than the installation base hole, so limited by this structure, it is impossible to design a reverse scratch dimple that meets the requirements knives. [0003] To sum up, the traditional processing method is difficult to guarantee the accuracy and efficiency of the processing of the special stationary vane installation holes of the central casing. Contents of the invention [0004]...

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Problems solved by technology

[0002] The central casing of the axial flow compressor has circumferential holes arranged in the axial direction on the circumference, which are used to install the stator vane. The circular inner hole is used to process the stator vane installation hole, but the stator vane installation hole of the central casing of the SACC scale prototype is larger than the installation base hole, so limited by this structure, it is impossible to design a reverse scratch dimple that meets the requirements knives

[0003] In summary, the traditional processing method is difficult to guarantee the accuracy and efficiency of the processing of the special stationary vane installation holes of the central casing

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