Switching device and measurement system for tongue-and-groove measurement of turbine disc

Abstract

The present invention discloses a switching device and a measurement system for the tongue-and-groove measurement of a turbine disc. The system comprises an adapter and a positioning block arranged on the adapter. The adapter comprises a body and a tenon tooth shaft in sliding fit with the body along the axial direction of the body. The tenon tooth shaft is embedded in the body. Both the bottom end of the body, and the end portion of the tenon tooth shaft which extends out of the body, are provided with tenons. The molded surfaces of tenons, formed on the body and the tenon tooth shaft, are matched with each other and combined together to form an adapter tenon matched with a tongue-and-groove on the turbine disc. The dimension of the adapter tenon is smaller than the dimension of the tongue-and-groove, so that an assembly clearance is provided. An elastic mechanism for realizing the elastic buffer of the axial displacement is sleeved onto the tenon tooth shaft. The top end of the tenon tooth shaft is provided with a locking mechanism used for locking the tenon tooth shaft along the axial direction. For the measurement of the complex molded surface of a tree-shaped tongue-and-groove, a combined structure of the body and the tenon tooth shaft is designed. In this way, not only the assembly clearance for the cooperation of the adapter tenon with the tree-shaped tongue-and-groove on the turbine disc is provided, but also the adapter tenon is reliably positioned. Meanwhile, the measurement result is stable, and the measurement mode is simple and convenient to operate.

Description

technical field [0001] The invention relates to the field of turbine disk measurement, in particular to an adapter device and a measurement system for measuring a turbine disk tenon and groove. Background technique [0002] Aeroengines use turbine disks as an important part of aeroengines. The position detection of the tenon and groove on the turbine disk is an important basis for judging whether its processing parameters meet the performance requirements of the engine. For example, figure 1 and figure 2 As shown, the turbine disk 1 is evenly distributed with dozens of tree-shaped tenon grooves 11 along its circumference. The tenon grooves 11 and the end surface of the turbine disk generally form an angle of 10° to 20°. image 3 shown. Since the tenon and groove are not perpendicular to the end face, the tree-shaped tenon and groove has a complex surface, and the groove width is small (about 2mm at the minimum), it is difficult to directly measure its position. Position ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides an adapter device and a measuring system for measuring the tenon and groove of a turbine disk to solve the technical problem that the position degree of the tree-shaped tenon and groove of the existing turbine disk is difficult to measure

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