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A processing and inspection method of leaf root measuring tool

A technology for inspection methods and measuring tools, which is applied in the direction of measuring devices, mechanical measuring devices, instruments, etc., can solve the problems of low efficiency of leaf root measuring tool processing and inspection methods, and achieve the improvement of processing and inspection efficiency, processing accuracy and human error rate. Reduced effect

Active Publication Date: 2017-01-18
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method of processing and testing leaf root measuring tools to solve the problem of low efficiency of existing leaf root measuring tool processing and testing methods

Method used

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  • A processing and inspection method of leaf root measuring tool
  • A processing and inspection method of leaf root measuring tool
  • A processing and inspection method of leaf root measuring tool

Examples

Experimental program
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specific Embodiment approach 1

[0023] Specific implementation mode one: combine Figure 1 to Figure 7 Illustrate, the described processing and inspection method of present embodiment is realized according to the following steps:

[0024] Step 1: Put the blank of the leaf root measuring tool into a medium-temperature furnace to heat, the heating temperature is 820°C to 840°C, and the heating time is 30 minutes, put the blank in a water tank to cool to 300°C to 400°C, and cool The time is 20 minutes to 30 minutes, put the blank in an oil tank to cool to normal temperature, put the blank in a tempering furnace for tempering, the tempering temperature is 560 ° C, and the tempering time is 2 hours, so that the leaves The rough parts of the measuring tool are quenched and tempered to a Rockwell hardness of 31HRC to 35HRC;

[0025] Step 2: turning the blank of the blade root measuring tool into a cylindrical blank, the diameter of the cylindrical blank is 700 mm and the length is 103 mm, and the perpendicularity ...

specific Embodiment approach 2

[0037] Specific implementation mode two: combination Figure 1 to Figure 7 Description, this embodiment step In step 2, before turning the blank of the blade root gauge into a cylindrical blank, an auxiliary head is turned at one end of the blank of the blade root gauge. The auxiliary head is a cylinder with a length of 20 mm and a diameter of 400 mm. The disc clamping auxiliary head turns the blank of the blade root gauge into a cylindrical blank.

[0038] In this embodiment, the auxiliary head is turned first, and then the auxiliary head is clamped by the lathe chuck to turn the blank of the blade root gauge into a cylindrical blank. The advantage is that the outer surface roughness of the turned cylindrical blank is effectively guaranteed, preventing Directly use the lathe chuck to directly clamp the blank of the blade root measuring tool to damage the outer surface of the blank, and use the auxiliary head to facilitate the measurement of the blank at any time during the ...

specific Embodiment approach 3

[0040] Specific implementation mode three: combination Figure 1 to Figure 7 Note that the ninth step of the method for processing the blade root measuring tool in this embodiment further includes: marking the blade root measuring tool with a corresponding type of figure number.

[0041] Due to the wide variety of steam turbine blades, different types of steam turbine blades are tested with corresponding blade root measuring tools, so there are also many types of blade root measuring tools. Therefore, after the blade root measuring tools are processed and inspected, it is necessary to map the types of steam turbine blades suitable for inspection. mark for subsequent management and use.

[0042] The undisclosed technical features in this embodiment are the same as those in the second embodiment.

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Abstract

The invention provides a machining and checking method of a blade root measuring tool and relates to the machining and checking method of the blade root measuring tool which is used for checking a steam turbine blade, aiming at solving the problem of an existing machining and checking method of the blade root measuring tool that the efficiency is low. The machining and checking method comprises the following steps: step 4, turning a left side wall of a molded line groove into a left side wall of a rotary molded line by a blade root molded line left turning tool; step 5, if the top end of a half molded line sample plate cannot slide in the molded line groove machined in the step 4 and the bottom end of the half molded line sample plate can slide in the molded line groove machined in the step 4, determining that the molded line groove machined in the step 4 is qualified; step 6, turning a right side wall of the molded line groove into a right side wall of the rotary molded line by a blade root molded line right turning tool; step 7, if the top end of a full molded line sample plate cannot slide in the molded line groove machined in the step 6 and the bottom end of the full molded line sample plate can slide in the molded line groove machined in the step 6, determining that the molded line groove machined in the step 6 is qualified. The machining and checking method is used for machining and checking the blade root measuring tool.

Description

technical field [0001] The invention relates to a processing and inspection method of a blade root measuring tool used for inspecting steam turbine blades. Background technique [0002] The blade root gauge is an important inspection tool for inspecting steam turbine blades. The machining accuracy of the blade root gauge directly determines the processing quality of the steam turbine blade. It is complex, and the blade root gage has high requirements on the accuracy of the side wall of the rotating profile. The error of the external dimension of the blade root gage is required to be within 0.02mm, and the profile error of the side wall of the rotating profile is required to be within 0.015mm. The existing blade root measuring tool processing method has low processing efficiency, and since the side wall of the rotating profile is a complex curved side wall, the inspection efficiency of the machining accuracy of the rotating profile side wall is low. Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00G01B5/00
Inventor 徐桂菊孙成慧杜珮瑶陈菲
Owner HARBIN TURBINE
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