Structure and method for measuring distance between shaft shoulder and circular aperture on shaft

Abstract

The present invention discloses a structure for measuring a distance (L) between a shaft shoulder and a circular aperture on the shaft, and the structure for measuring a distance between the shaft shoulder and the circular aperture on the shaft is used for measuring the distance between the shaft shoulder and the circular aperture on a circular shaft. The device for measuring the distance between the shaft shoulder and the circular aperture on the shaft comprises: a located piece clamped on the circular shaft through a locating lever which passes through the located piece and the circular aperture, the located piece being provided with a plane of measurement in parallel with the shaft shoulder, the distance between the plane of measurement and the circular aperture along with the axial direction of the circular shaft being D; a measuring rod, arranged on the located piece, sliding along the axial direction of the circular shaft, the first end of the measuring rod being applied to the end face of the shaft shoulder, the second end of the measuring rod passing through the plane of measurement and being provided with a first reference surface and a second reference surface in parallel with the plane of measurement. The distance between the first reference surface and the end face of the first end of the measuring rod is the sum of the minimum value of the L in the tolerance range and the D, and the distance between the second reference surface and the end face of the first end of the measuring rod is the sum of the maximum value of the L in the tolerance range and the D. According to the invention, the measurement time is short and the measurement result is accurate and visual; and moreover, the structure for measuring distance between a shaft shoulder and a circular aperture on a shaft is not liable to be affected by human factors.

Description

technical field [0001] The invention relates to the field of aero-engines, in particular to a hole-shoulder distance measuring structure. In addition, the invention also relates to a method for measuring hole shoulder distance. Background technique [0002] At present, when measuring the distance L (hereinafter referred to as the hole-shoulder distance) from the end face of the shaft shoulder on the shaft part to a certain hole on the shaft, a measuring instrument, such as a simple sheet gauge, is usually used to measure. [0003] When using a simple sheet gauge to measure the distance L, because the simple sheet gauge is expensive, it cannot be widely used. It is generally only used for the measurement of inspection departments and research institutions; when using a simple sheet gauge to measure the distance L, the gauge at one end The end is in contact with the end face of the shaft shoulder, and the arc protrusion at the other end is matched with the part hole. By obser...

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Problems solved by technology

[0004] The invention provides a hole shoulder distance measurement structure and a hole shoulder distance measurement method to solve the problems that the existing simple sheet gauges cannot be widely used, the measurement results have large errors, and are greatly affected by human factors. technical problem

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