阅读说明：本技术 一种动力涡轮空气封严测量装置及测量方法 (Power turbine air seal measuring device and measuring method ) 是由 晏福宾 姜啸 王磊 周文亮 刘振军 吴东辉 于 2020-12-29 设计创作，主要内容包括：本发明提供了一种动力涡轮空气封严测量装置及测量方法,测量装置包括底板、内弧侧弧度测具定位块、内弧侧下部弧度测具、内弧侧中部弧度测具、内弧侧上部弧度测具、六点定位机构、限位机构、背弧侧上部弧度测具、背弧侧上部弧度测具定位块、背弧侧下部弧度测具和背弧侧下部弧度测具定位块；六点定位机构固定在底板上并支撑待测工件,限位机构固定在底板上并对待测工件的背弧侧支撑限位；所有弧度测具均设有标准测量弧面,且所有弧度测具的标准弧面均朝向待测工件的相应的待测弧侧布置。本发明满足在空气封严上多个弧形部位的连续尺寸的测量,一次装夹可实现整体关键尺寸的测量,可以省去多个测量步骤,提高工人操作效率的同时提升测量的整体精度。(The invention provides a power turbine air tightness measuring device and a measuring method, wherein the measuring device comprises a bottom plate, an inner arc side radian measuring tool positioning block, an inner arc side lower radian measuring tool, an inner arc side middle radian measuring tool, an inner arc side upper radian measuring tool, a six-point positioning mechanism, a limiting mechanism, a back arc side upper radian measuring tool positioning block, a back arc side lower radian measuring tool and a back arc side lower radian measuring tool positioning block; the six-point positioning mechanism is fixed on the bottom plate and supports a workpiece to be detected, and the limiting mechanism is fixed on the bottom plate and supports and limits the back arc side of the workpiece to be detected; all the radian measuring tools are provided with standard measuring cambered surfaces, and the standard cambered surfaces of all the radian measuring tools are arranged towards the corresponding arc sides to be measured of the workpieces to be measured. The invention meets the requirement of measuring the continuous sizes of a plurality of arc-shaped parts on the air seal, can realize the measurement of the whole key size by one-time clamping, can save a plurality of measuring steps, improves the operating efficiency of workers and simultaneously improves the whole measuring precision.)

1. The utility model provides a power turbine air seals measuring device which characterized in that: the measuring device comprises a bottom plate, an inner arc side radian measuring tool positioning block, an inner arc side lower part radian measuring tool, an inner arc side middle part radian measuring tool, an inner arc side upper part radian measuring tool, a six-point positioning mechanism, a limiting mechanism, a back arc side upper part radian measuring tool positioning block, a back arc side lower part radian measuring tool and a back arc side lower part radian measuring tool positioning block;

the two inner arc side radian measuring positioning blocks are arranged right and left and are arranged at the rear part of the bottom plate, and the inner arc side upper radian measuring tool, the inner arc side middle radian measuring tool and the inner arc side lower radian measuring tool are arranged between the two inner arc side radian measuring positioning blocks in a sliding manner from top to bottom;

the two upper radian measuring tool positioning blocks on the back arc side are arranged between the two upper radian measuring tool positioning blocks on the back arc side in a sliding manner, the two lower radian measuring tool positioning blocks on the back arc side are arranged on the front part of the bottom plate in a left-right manner, and the two lower radian measuring tool positioning blocks on the back arc side are arranged between the two lower radian measuring tool positioning blocks on the back arc side in a sliding manner;

the six-point positioning mechanism is fixed on the bottom plate and supports a workpiece to be measured, the limiting mechanism is fixed on the bottom plate and arranged between the radian measuring tool positioning blocks at the lower parts of the two back arc sides, and the limiting mechanism supports and limits the back arc sides of the workpiece to be measured; all the radian measuring tools are provided with standard measuring cambered surfaces, and the standard cambered surfaces of all the radian measuring tools are arranged towards the corresponding arc sides to be measured of the workpieces to be measured.

2. A power turbine air seal measurement apparatus according to claim 1, wherein: the locating piece is measured to inner arc side radian and is three-layer notch cuttype structure about last, an inner arc side radian measuring tool spout has all been seted up on every notch cutthroat of locating piece, inner arc side radian measuring tool spout and the cooperation of inner arc side upper portion radian measuring tool on the upper portion through two inner arc side radians measure the locating piece, through the cooperation of inner arc side radian measuring tool spout and inner arc side middle part radian measuring tool at middle part, through the cooperation of inner arc side radian measuring tool spout and inner arc side lower part radian measuring tool at lower part, and the both ends of every inner arc side radian measuring tool respectively through an inner arc side radian measuring tool slider and corresponding inner arc side radian measuring tool spout sliding fit, every inner arc side radian measuring tool both ends respectively through an inner arc side radian measuring tool mounting pin spacing.

3. A power turbine air seal measurement apparatus according to claim 2, wherein: the top end surfaces of each back arc side upper radian measuring tool positioning block and each back arc side lower radian measuring tool positioning block are respectively provided with a back arc side radian measuring tool sliding groove, the back arc side radian measuring tool sliding grooves of the two back arc side upper radian measuring tool positioning blocks are in sliding fit with back arc side upper radian measuring tool sliding blocks at two ends of a back arc side upper radian measuring tool, and two ends of the back arc side upper radian measuring tool are respectively limited by a back arc side upper radian measuring tool mounting pin; the back arc side radian measuring tool sliding grooves of the two back arc side lower radian measuring tool positioning blocks are in sliding fit with the back arc side upper radian measuring tool sliding blocks at the two ends of the back arc side lower radian measuring tool, and the two ends of the back arc side lower radian measuring tool are respectively limited by one back arc side lower radian measuring tool mounting pin.

4. A power turbine air seal measurement apparatus according to any one of claims 1 to 3, wherein: positioning mechanism includes back arc side vaulting pole and back arc side vaulting pole locating piece, back arc side vaulting pole is fixed on the upper portion of back arc side vaulting pole locating piece, back arc side vaulting pole locating piece passes through a plurality of bolt fastening in the front portion of bottom plate, and the free end of back arc side vaulting pole passes and supports the back arc side at the work piece that awaits measuring from back arc side upper portion radian measuring tool bottom.

5. A power turbine air seal measurement apparatus according to claim 4, wherein: and the free end of the back arc side supporting rod is provided with a spherical contact.

6. A power turbine air seal measurement apparatus according to claim 1, wherein: the horizontal distance between the two back arc side lower radian measuring tool positioning blocks is smaller than the horizontal distance between the two back arc side upper radian measuring tool positioning blocks, and the height of the back arc side lower radian measuring tool positioning block is smaller than that of the back arc side upper radian measuring tool positioning block.

7. A power turbine air seal measurement apparatus according to claim 3, wherein: all the sliding blocks have the same structure and are of screw rod structures, the head parts of the screw rods are matched with the corresponding sliding grooves, and the rod parts of the screw rods are fixedly connected with the corresponding radian measuring tools.

8. A power turbine air seal measurement apparatus according to claim 3, wherein: each radian measuring tool and the corresponding mounting position of the mounting pin are provided with long round holes, and the length of each long round hole is 30 mm.

9. A power turbine air seal measurement apparatus according to claim 8, wherein: all the mounting pins are of the same structure and are of pin shaft structures, the bottom ends of the pin shafts are matched with the limiting holes in the bottom surfaces of the corresponding sliding grooves, and the top ends of the pin shafts are matched with the corresponding long round holes.

10. The measurement method of the power turbine air seal measurement device according to claim 4 or 5, wherein: the method specifically comprises the following steps:

step S1, firstly, mounting two inner arc side radian measuring tool positioning blocks at the appointed position of the bottom plate by using mounting screws; secondly, installing an inner arc side upper radian measuring tool, an inner arc side middle radian measuring tool and an inner arc side lower radian measuring tool on corresponding sliding grooves through corresponding sliding blocks and installation pins; finally, the six-point positioning mechanism is arranged at the appointed position of the bottom plate;

step S2, firstly, mounting two back arc side upper radian measuring tool positioning blocks at the appointed positions of the bottom plate by using mounting screws, and mounting the back arc side upper radian measuring tool on corresponding sliding grooves through a back arc side upper radian measuring tool sliding block and a back arc side upper radian measuring tool mounting pin; secondly, mounting two positioning blocks of the lower radian measuring tool on the back arc side at the appointed position of the bottom plate through mounting screws, and mounting the lower radian measuring tool on the back arc side on corresponding sliding grooves through a sliding block of the lower radian measuring tool on the back arc side and a mounting pin of the lower radian measuring tool on the back arc side; finally, mounting a back arc side supporting rod positioning block on the bottom plate through a back arc side supporting rod positioning block mounting bolt;

step S3, positioning the workpiece to be measured at the position to be measured through a six-point positioning mechanism and an inner arc side support rod;

step S4, moving the inner arc side lower radian measuring tool, the inner arc side middle radian measuring tool and the inner arc side upper radian measuring tool towards the inner arc side of the air seal to be measured, and measuring the inner arc radian position of the air seal to be measured through the standard cambered surfaces of the inner arc side lower radian measuring tool, the inner arc side middle radian measuring tool and the inner arc side upper radian measuring tool;

and step S5, moving the upper radian measuring tool on the back arc side and the lower radian measuring tool on the back arc side towards the outer arc side of the air seal to be measured, and measuring the radian position of the back arc of the air seal to be measured through the standard cambered surfaces of the upper radian measuring tool on the back arc side and the lower radian measuring tool on the back arc side.

Technical Field

The invention belongs to the technical field of air seal measurement, and particularly relates to a power turbine air seal measurement device and a measurement method.

Background

The air seal is used as a high-temperature core component in the gas turbine, the working environment is very severe, the air seal belongs to an easily-worn part, the manufacturing cost and the maintenance cost are high, and high dimensional accuracy and installation accuracy are required. Because the limit of the structure of the air seal body, the number of inner and outer arc sections is large, when the traditional air seal is measured, the measurement of a plurality of sections of arc surfaces is often required to be installed and positioned for many times, and a plurality of arc surfaces cannot be clamped and measured at one time. The measurement and positioning reference is difficult to ensure consistency by clamping for many times, measurement errors are often caused, and the measurement precision and stability are seriously influenced. In addition, the operation steps in the measurement process are complex, and the measurement time is long. Therefore, the invention designs the power turbine air seal measuring device, which can realize integral one-time clamping and measurement, reduce measurement errors, improve measurement precision and accuracy and facilitate the operation of workers.

Disclosure of Invention

In view of this, the invention aims to provide a power turbine air seal measuring device and a measuring method, which can meet the requirement of measuring the continuous sizes of a plurality of arc-shaped parts on air seal, can realize the measurement of the whole key size by one-time clamping, can save a plurality of measuring steps, improves the operation efficiency of workers, and simultaneously improves the whole measuring precision.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a power turbine air sealing measuring device comprises a bottom plate, an inner arc side radian measuring tool positioning block, an inner arc side lower radian measuring tool, an inner arc side middle radian measuring tool, an inner arc side upper radian measuring tool, a six-point positioning mechanism, a limiting mechanism, a back arc side upper radian measuring tool positioning block, a back arc side lower radian measuring tool and a back arc side lower radian measuring tool positioning block;

the two inner arc side radian measuring positioning blocks are arranged right and left and are arranged at the rear part of the bottom plate, and the inner arc side upper radian measuring tool, the inner arc side middle radian measuring tool and the inner arc side lower radian measuring tool are arranged between the two inner arc side radian measuring positioning blocks in a sliding manner from top to bottom;

the two upper radian measuring tool positioning blocks on the back arc side are arranged between the two upper radian measuring tool positioning blocks on the back arc side in a sliding manner, the two lower radian measuring tool positioning blocks on the back arc side are arranged on the front part of the bottom plate in a left-right manner, and the two lower radian measuring tool positioning blocks on the back arc side are arranged between the two lower radian measuring tool positioning blocks on the back arc side in a sliding manner;

the six-point positioning mechanism is fixed on the bottom plate and supports a workpiece to be measured, the limiting mechanism is fixed on the bottom plate and arranged between the radian measuring tool positioning blocks at the lower parts of the two back arc sides, and the limiting mechanism supports and limits the back arc sides of the workpiece to be measured; all the radian measuring tools are provided with standard measuring cambered surfaces, and the standard cambered surfaces of all the radian measuring tools are arranged towards the corresponding arc sides to be measured of the workpieces to be measured.

Further, the inner arc side radian measurement positioning block is of an upper-middle-lower three-layer stepped structure, an inner arc side radian measuring tool sliding groove is formed in each stepped surface of the positioning block, the inner arc side radian measuring tool sliding groove located on the upper portion of the positioning block is matched with the inner arc side upper portion radian measuring tool through the two inner arc side radians, the inner arc side radian measuring tool sliding groove located in the middle is matched with the inner arc side middle radian measuring tool, the inner arc side radian measuring tool sliding groove located in the lower portion is matched with the inner arc side lower portion radian measuring tool, two ends of each inner arc side radian measuring tool are respectively in sliding fit with the corresponding inner arc side radian measuring tool sliding groove through an inner arc side radian measuring tool sliding block, and two ends of each inner arc side radian measuring tool are limited through an inner arc side radian measuring tool mounting pin.

Furthermore, a back arc side radian measuring tool sliding groove is respectively formed in the top end surface of each back arc side upper radian measuring tool positioning block and each back arc side lower radian measuring tool positioning block, the back arc side radian measuring tool sliding grooves of the two back arc side upper radian measuring tool positioning blocks are in sliding fit with back arc side upper radian measuring tool sliding blocks at two ends of the back arc side upper radian measuring tool, and two ends of the back arc side upper radian measuring tool are respectively limited by a back arc side upper radian measuring tool mounting pin; the back arc side radian measuring tool sliding grooves of the two back arc side lower radian measuring tool positioning blocks are in sliding fit with the back arc side upper radian measuring tool sliding blocks at the two ends of the back arc side lower radian measuring tool, and the two ends of the back arc side lower radian measuring tool are respectively limited by one back arc side lower radian measuring tool mounting pin.

Further, positioning mechanism includes back arc side vaulting pole and back arc side vaulting pole locating piece, back arc side vaulting pole is fixed on the upper portion of back arc side vaulting pole locating piece, back arc side vaulting pole locating piece passes through a plurality of bolt fastening in the front portion of bottom plate, and the free end of back arc side vaulting pole passes and supports the back arc side at the work piece that awaits measuring from back arc side upper portion radian measuring tool bottom.

Furthermore, the free end of the back arc side supporting rod is provided with a spherical contact.

Furthermore, the horizontal distance between the two back arc side lower radian measuring tool positioning blocks is smaller than the horizontal distance between the two back arc side upper radian measuring tool positioning blocks, and the height of the back arc side lower radian measuring tool positioning block is smaller than that of the back arc side upper radian measuring tool positioning block.

Furthermore, all the sliding blocks are identical in structure and are of screw rod structures, the heads of the screw rods are matched with the corresponding sliding grooves, and the rod parts of the screw rods are fixedly connected with the corresponding radian measuring tools.

Furthermore, each radian measuring tool and the installation position of the corresponding installation pin are provided with long round holes, and the length of each long round hole is 30 mm.

Furthermore, all the mounting pins are of the same structure and are of pin shaft structures, the bottom ends of the pin shafts are matched with the limiting holes in the bottom surfaces of the corresponding sliding grooves, and the top ends of the pin shafts are matched with the corresponding long round holes.

A measuring method of a power turbine air seal measuring device specifically comprises the following steps:

step S1, firstly, mounting two inner arc side radian measuring tool positioning blocks at the appointed position of the bottom plate by using mounting screws; secondly, installing an inner arc side upper radian measuring tool, an inner arc side middle radian measuring tool and an inner arc side lower radian measuring tool on corresponding sliding grooves through corresponding sliding blocks and mounting pins; finally, the six-point positioning mechanism is arranged at the appointed position of the bottom plate;

step S2, firstly, mounting two back arc side upper radian measuring tool positioning blocks at the appointed positions of the bottom plate by using mounting screws, and mounting the back arc side upper radian measuring tool on corresponding sliding grooves through a back arc side upper radian measuring tool sliding block and a back arc side upper radian measuring tool mounting pin; secondly, mounting two positioning blocks of the lower radian measuring tool on the back arc side at the appointed position of the bottom plate through mounting screws, and mounting the lower radian measuring tool on the back arc side on corresponding sliding grooves through a sliding block of the lower radian measuring tool on the back arc side and a mounting pin of the lower radian measuring tool on the back arc side; finally, mounting a back arc side supporting rod positioning block on the bottom plate through a back arc side supporting rod positioning block mounting bolt;

step S3, positioning the workpiece to be measured at the position to be measured through a six-point positioning mechanism and an inner arc side support rod;

step S4, moving the inner arc side lower radian measuring tool, the inner arc side middle radian measuring tool and the inner arc side upper radian measuring tool towards the inner arc side of the air seal to be measured, and measuring the inner arc radian position of the air seal to be measured through the standard cambered surfaces of the inner arc side lower radian measuring tool, the inner arc side middle radian measuring tool and the inner arc side upper radian measuring tool;

and step S5, moving the upper radian measuring tool on the back arc side and the lower radian measuring tool on the back arc side towards the outer arc side of the air seal to be measured, and measuring the radian position of the back arc of the air seal to be measured through the standard cambered surfaces of the upper radian measuring tool on the back arc side and the lower radian measuring tool on the back arc side.

Compared with the prior art, the power turbine air seal measuring device and the measuring method have the following advantages:

the device can meet the requirement of realizing the integral measurement of a plurality of sections of cambered surfaces and the measurement of the integral sizes of the inner arc and the back arc side in one-time installation; the six-point positioning device can realize the unification of the measurement reference and the processing reference; the whole disposable clamping and measurement can reduce the measurement error, improve the measurement accuracy and accuracy, and facilitate the operation of workers.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic perspective view of an air seal measurement apparatus for a power turbine according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of another angle of a power turbine air seal measurement apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of an upper radian measuring tool on the inner arc side;

FIG. 4 is a schematic structural diagram of a measuring tool for measuring the radian of the middle part of the inner arc side;

FIG. 5 is a schematic structural view of a lower radian measuring tool on the inner arc side;

FIG. 6 is a schematic structural view of an upper radian measuring tool on the back arc side;

FIG. 7 is a schematic structural view of a lower radian measuring tool on the back arc side;

FIG. 8 is a front view of the mounting pin;

FIG. 9 is a top view of the mounting pin;

FIG. 10 is a front view of a workpiece to be measured;

FIG. 11 is a top view of a workpiece to be measured;

FIG. 12 is a side view of a workpiece to be measured;

FIG. 13 is a schematic measurement diagram of an air seal measurement apparatus for a power turbine according to an embodiment of the present invention.

Description of reference numerals:

1-a bottom plate, 2-an inner arc side radian measuring tool positioning block, 3-an inner arc side lower radian measuring tool, 4-an inner arc side middle radian measuring tool, 5-an inner arc side upper radian measuring tool, 6-a six-point positioning mechanism, 7-a slide block, 8-a mounting pin, 9-a back arc side support rod, 10-a back arc side support rod positioning block, 11-a back arc side upper radian measuring tool, 12-a back arc side upper radian measuring tool positioning block, 13-a back arc side lower radian measuring tool, 14-a back arc side support rod positioning block mounting bolt, 15-a back arc side lower radian measuring tool positioning block, 16-a workpiece to be measured; wherein a to F marked in fig. 10-12 are the positions where the six reference points of the six-point positioning mechanism are supported on the workpiece to be measured.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1-13, a power turbine air-tight measurement device comprises a bottom plate 1, an inner arc side radian measurement tool positioning block 2, an inner arc side lower radian measurement tool 3, an inner arc side middle radian measurement tool 4, an inner arc side upper radian measurement tool 5, a six-point positioning mechanism 6, a limiting mechanism, a back arc side upper radian measurement tool 11, a back arc side upper radian measurement tool positioning block 12, a back arc side lower radian measurement tool 13 and a back arc side lower radian measurement tool positioning block 15;

the two inner arc side radian measurement positioning blocks 2 are arranged right and left and are arranged on the rear part of the bottom plate 1, and the inner arc side upper radian measuring tool 5, the inner arc side middle radian measuring tool 4 and the inner arc side lower radian measuring tool 3 are arranged between the two inner arc side radian measurement positioning blocks 2 in a sliding manner from top to bottom;

the two upper radian measuring tool positioning blocks 12 on the back arc side are arranged in the middle front part of the bottom plate 1 in a right-left opposite mode, the upper radian measuring tool 11 on the back arc side is arranged between the two upper radian measuring tool positioning blocks 12 on the back arc side in a sliding mode, the two lower radian measuring tool positioning blocks 15 on the back arc side are arranged in the front part of the bottom plate 1 in a right-left opposite mode, and the lower radian measuring tool 13 on the back arc side is arranged between the two lower radian measuring tool positioning blocks 15 on the back arc side in a sliding mode;

the six-point positioning mechanism 6 is designed based on a six-point positioning principle, the six-point positioning mechanism 6 is fixed on the bottom plate 1 and supports a workpiece 16 to be measured, the limiting mechanism is fixed on the bottom plate 1 and arranged between the two back arc side lower radian measuring tool positioning blocks 15, and the limiting mechanism supports and limits the back arc side of the workpiece 16 to be measured; all the radian measuring tools are provided with standard measuring cambered surfaces, and the standard cambered surfaces of all the radian measuring tools are arranged towards the corresponding arc side to be measured of the workpiece 16 to be measured.

Inner arc side radian measure locating piece 2 is upper and middle and lower three-layer notch cuttype structure, all seted up an inner arc side radian measuring tool spout on every step surface of inner arc side radian measure locating piece 2, inner arc side radian measuring tool spout and the cooperation of inner arc side upper portion radian measuring tool 5 on the position upper portion through two inner arc side radian measure locating pieces 2, survey 4 cooperation through the inner arc side radian measuring tool spout that is located the middle part and inner arc side middle part radian, survey 3 cooperations through inner arc side radian measuring tool spout and inner arc side lower part radian measuring tool that are located the lower part, and the both ends of every inner arc side radian measuring tool respectively through an inner arc side radian measuring tool slider and corresponding inner arc side radian measuring tool spout sliding fit, every inner arc side radian measuring tool both ends are respectively spacing through an inner arc side radian measuring tool mounting pin.

A back arc side radian measuring tool sliding groove is respectively formed in the top end surface of each back arc side upper radian measuring tool positioning block 12 and each back arc side lower radian measuring tool positioning block 15, the back arc side radian measuring tool sliding grooves of the two back arc side upper radian measuring tool positioning blocks 12 are in sliding fit with back arc side upper radian measuring tool sliding blocks at two ends of the back arc side upper radian measuring tool 11, and two ends of the back arc side upper radian measuring tool 11 are respectively limited by a back arc side upper radian measuring tool mounting pin; the back arc side radian measuring tool sliding grooves of the two back arc side lower radian measuring tool positioning blocks 15 are in sliding fit with the back arc side upper radian measuring tool sliding blocks at the two ends of the back arc side lower radian measuring tool 13, and the two ends of the back arc side lower radian measuring tool 13 are respectively limited by one back arc side lower radian measuring tool mounting pin.

The positioning mechanism comprises a back arc side supporting rod 9 and a back arc side supporting rod positioning block 10, the back arc side supporting rod 9 is fixed on the upper portion of the back arc side supporting rod positioning block 10, the back arc side supporting rod positioning block 10 is fixed on the front portion of the bottom plate 1 through a plurality of back arc side supporting rod positioning block mounting bolts 14, and the free end of the back arc side supporting rod 9 penetrates through the bottom of a back arc side upper portion radian measuring tool 11 and abuts against the back arc side of a workpiece 16 to be measured. The free end of the back arc side supporting rod 9 is provided with a spherical contact, and the stress is uniform.

The horizontal distance between the two back arc side lower radian measurement tool positioning blocks 15 is smaller than the horizontal distance between the two back arc side upper radian measurement tool positioning blocks 12, and the height of the back arc side lower radian measurement tool positioning block 15 is smaller than the height of the back arc side upper radian measurement tool positioning block 12.

All the chutes have the same structure; all the sliding blocks 7 are identical in structure and are of screw rod structures, the head parts of the screw rods are matched with the corresponding sliding grooves, and the rod parts of the screw rods are fixedly connected with the corresponding radian measuring tools.

Each radian measuring tool and the corresponding mounting position of the mounting pin are respectively provided with a long circular hole, the length of each long circular hole is 30mm, and namely the stroke of each radian measuring tool is 30 mm.

All the mounting pins 8 are identical in structure and are of pin shaft structures, the bottom ends of the pin shafts are matched with the limiting holes in the bottom surfaces of the corresponding sliding grooves, and the top ends of the pin shafts are matched with the corresponding long round holes.

A measuring method of a power turbine air seal measuring device specifically comprises the following steps:

step S1, firstly, mounting two inner arc side radian measuring tool positioning blocks 2 at the appointed positions of the bottom plate by using mounting screws; secondly, correspondingly installing an inner arc side radian measuring tool sliding block and an inner arc side radian measuring tool installing pin on inner arc side radian measuring tool sliding grooves at the upper part, the middle part and the lower part of an inner arc side radian measuring tool positioning block; then, an inner arc side upper radian measuring tool 5, an inner arc side middle radian measuring tool 4 and an inner arc side lower radian measuring tool 3 are installed on corresponding sliding grooves through corresponding sliding blocks and installation pins; finally, the six-point positioning mechanism 6 is arranged at the appointed position of the bottom plate;

step S2, first, mounting two back arc side upper radian measurement tool positioning blocks 12 to the designated positions of the base plate using mounting screws, and mounting a back arc side upper radian measurement tool slider and a back arc side upper radian measurement tool mounting pin to back arc side radian measurement tool sliding grooves of the back arc side upper radian measurement tool positioning blocks; mounting a back arc side upper radian measuring tool 11 on a corresponding sliding groove through a back arc side upper radian measuring tool sliding block and a back arc side upper radian measuring tool mounting pin; secondly, mounting two back arc side lower radian measuring tool positioning blocks 15 at the appointed positions of the bottom plate through mounting screws, and mounting a back arc side lower radian measuring tool sliding block and a back arc side lower radian measuring tool mounting pin on a back arc side lower radian measuring tool sliding groove of the back arc side lower radian measuring tool positioning block; mounting a back arc side lower radian measuring tool 13 on a corresponding sliding groove through a back arc side lower radian measuring tool sliding block and a back arc side lower radian measuring tool mounting pin; finally, mounting the back arc side support rod positioning block 10 on the bottom plate through a back arc side support rod positioning block mounting bolt 14;

step S3, positioning the workpiece to be measured at the position to be measured through the six-point positioning mechanism 6 and the inner arc side support rod;

step S4, moving the inner arc side lower radian measuring tool 3, the inner arc side middle radian measuring tool 4 and the inner arc side upper radian measuring tool 5 towards the inner arc side of the air seal to be measured, measuring the inner arc radian position of the air seal to be measured through the standard cambered surfaces of the inner arc side lower radian measuring tool 3, the inner arc side middle radian measuring tool 4 and the inner arc side upper radian measuring tool 5, and measuring in cooperation with a plug gauge;

and step S5, moving the upper radian measuring tool 11 on the back arc side and the lower radian measuring tool 13 on the back arc side towards the outer arc side of the air seal to be measured, measuring the radian position of the back arc of the air seal to be measured through the standard cambered surfaces of the upper radian measuring tool 11 on the back arc side and the lower radian measuring tool 13 on the back arc side, and measuring in cooperation with a plug gauge.

By adopting the power turbine air sealing measuring device, accurate measurement of a plurality of cambered surfaces at the inner arc side and the outer arc side can be positioned and clamped at one time; measuring the overall sizes of the inner arc and the outer arc; the design of the six-point positioning device can meet the unification of the tool measuring reference and the processing reference, reduce measuring errors, improve the measuring precision and accuracy and facilitate the operation of workers.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.