A device for detecting the size of blade edge plate

Abstract

A device for detecting the size of a blade edge plate, which includes a base, two measuring blocks, two pressure plates, and a go-no-go gauge, the base includes a positioning protrusion, a positioning reference hole, and the positioning protrusion The lifting part is provided with a central positioning hole for connecting with the outer edge central hole and two auxiliary positioning holes corresponding to the outer edge hole, the pressure plate is rotatably connected to the positioning protrusion, and the Measuring blocks are installed on both sides of the positioning protrusion, and the distance between the profile of the measuring block and the corresponding theoretical position of the cutting surface of the sector blade is a fixed value. The go-no-go gauge is a strip structure with two ends respectively being a go-end and a stop-end. A support pin is arranged on the base, and the go-stop gauge is detachably socketed with the support pin. The device for detecting the size of the edge plate of the blade provided by the invention has the advantages of convenient operation, stable and reliable repeated positioning, good consistency of measurement results, and ensures the accuracy of measurement.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a device for measuring the size of the edge plate of the cut sector blade during the turbine production process of the aero-engine. Background technique [0002] In the manufacturing process of aero-engines, for power turbines, the production process includes casting to obtain integral turbine blanks, uniformly cutting the entire turbine blanks to obtain multiple sector blades, and sealing the cut surfaces of sector blades The processing of the equal profile, and then the sector blades are assembled into a complete annular turbine piece. [0003] figure 1 It is a schematic diagram of the process principle of the cutting process of a power turbine, see figure 1 As shown, in the existing production process, the power turbine needs to be evenly cut into six identical segment blades 100, each of which includes an outer central hole 101 and two outer edge holes 102, D...

AI Technical Summary

Problems solved by technology

[0010] After the sector blade 100 is obtained by cutting, it is necessary to detect the characteristic dimensions of the positions where the distance between the cut surface of the sector blade 100 and the axis of the power turbine is specific values ​​D1 and D2, such as Figure 5 The distance dimensions L, L0, L1, L2, L3, and L4 of the flange surface are shown, among which L1, L2, L3, and L4 are direct measurement dimensions, and L and L0 are indirect measurement dimensions. The existing measurement methods are, in On the measuring tool, the inner circle and the outer circle of the fan-shaped blade 100 are clamped and positioned, and then the meter frame is used to drag the meter on the surface parallel to the two cutting surfaces to measure. If the meter reading is not greater than 0.08, it is qualified. It is to convert the detection of linear dimension into the detection of surface profile. Since the ring is easily deformed during cutting, the existing measuring tools are likely to cause artificial clamping and measurement errors, and this is to provide a movement of the table frame parallel to the two cutting surfaces. surface, the structure of the measuring tool is complex, the volume is large, and the operation steps are cumbersome, which is not conducive to the improvement of production efficiency

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