Frame type measuring tool for measuring blade of T-shaped blade root of reaction steam turbine

Abstract

The invention provides an upside-down hanging tool for measuring a blade of a T-shaped blade root of a reaction steam turbine. The tool can be used for clamping a blank of the blade of the T-shaped blade root of the reaction steam turbine during measurement, and is convenient and stable in clamping. The tool comprises a mounting plate, wherein a first datum plane axial positioning seat and a second datum plane axial positioning seat are mounted at the bottom of the mounting plate, a first datum plane positioning block is movably connected to the first datum plane axial positioning seat, a second datum plane positioning block is movably connected to the second datum plane axial positioning seat, the first datum plane positioning block and the second datum plane positioning block are located at the same level, a back radial face positioning block used for positioning a back radial face of the blade is further mounted at the bottom of the mounting plate, a tail blade positioning pin is connected to the back radial face positioning block, a blade root side face positioning block used for positioning a side face of the blade root is further connected to one side of the back radial face positioning block, and the tool further comprises a blade root inner radial face pressing mechanism used for pressing the blade on the back radial face positioning block and the blade root side face positioning block.

Description

technical field [0001] The invention relates to the technical field of blade measuring tooling, in particular to an upside-down tooling used for measuring T-shaped blade roots and blades of reactionary steam turbines. Background technique [0002] Such as figure 1 , figure 2 Shown are two forms of T-shaped root blades of reaction steam turbines, of which figure 1 for ordinary slices, figure 2 For the final blade, gaps 101 are opened on both sides of the blade root 100 of the ordinary blade, and through holes 102 are opened on the blade root 100 of the final blade. Such as image 3 The profile measurement and blade crown position measurement of the T-shaped blade root blade of the reaction steam turbine shown above mostly adopt the formal fixed form, that is, the structural form of the blade root 100 on the bottom and the blade crown 110 on the top. Under this structural form, In order to ensure that the working surface of the blade fits accurately with the positioning...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem of unstable clamping during blade measurement due to the uneven bottom surface of the blade blank, the invention provides an upside-down tooling for measuring T-shaped blade root blades of reaction steam turbines, which can be used for blanks of T-shaped blade root blades of reaction steam turbines Clamping during measurement, and clamping is convenient and stable

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