阅读说明：本技术 一种空心叶片Shank处壁厚的测量定位工装及测量方法 (Measuring and positioning tool and measuring method for wall thickness of hollow blade Shank ) 是由 李林 杜应流 施长坤 程善良 罗钢 周永芳 于 2021-02-03 设计创作，主要内容包括：本发明公开了一种空心叶片Shank处壁厚的测量定位工装,包括叶背侧定位工装和叶盆侧定位工装,两个定位工装均包括检测样板、上定位板和侧定位板,且上定位板和侧定位板与检测样板为一体设置,上定位板和侧定位板与检测样板为弧形连接,检测样板与空心叶片Shank处贴合侧表面弧度相同设置,检测样板上设有检测锥形孔或半圆锥形槽,并公开了利用两个定位工装对空心叶片Shank处壁厚的测量方法；本发明通过叶背侧定位工装和叶盆侧定位工装对空心叶片Shank处待检测的壁厚进行定点定位,在蜡模阶段和铸件阶段都可以对Shank部位进行快速有效的测量控制,对测量点选取的精准度也得到提高,使用相同的工装控制也使得数据的一致性、稳定性和可信性得到提高。(The invention discloses a measuring and positioning tool for the wall thickness of a hollow blade Shank, which comprises a blade back side positioning tool and a blade basin side positioning tool, wherein the two positioning tools respectively comprise a detection sample plate, an upper positioning plate and a side positioning plate, the upper positioning plate, the side positioning plate and the detection sample plate are integrally arranged, the upper positioning plate and the side positioning plate are in arc connection with the detection sample plate, the radian of the side surfaces of the detection sample plate, which are attached to the hollow blade Shank, are the same, and a detection tapered hole or a semi-tapered groove is arranged on the detection sample plate; according to the invention, the wall thickness to be detected at the hollow blade Shank is positioned at a fixed point by the blade back side positioning tool and the blade basin side positioning tool, the Shank part can be quickly and effectively measured and controlled in a wax mold stage and a casting stage, the accuracy of selecting a measuring point is improved, and the consistency, stability and credibility of data are improved by using the same tool for control.)

1. The utility model provides a hollow blade Shank department wall thickness measure location frock which characterized in that: the positioning device comprises a blade back side positioning tool and a blade basin side positioning tool;

the blade back side positioning tool comprises a first detection sample plate, a first upper positioning plate and a first side positioning plate, wherein the first upper positioning plate and the first side positioning plate are integrally arranged with the first detection sample plate, one surfaces of the first upper positioning plate and the first side positioning plate, which are close to the blade back side of the hollow blade Shank, are in arc connection, the first detection sample plate and the first hollow blade Shank are arranged in the same surface radian, a first detection tapered hole is formed in the first detection sample plate, and a first semi-conical groove is formed in the side edge of the first detection sample plate;

leaf basin side location frock is including detecting model two, top board two and side locating plate two set up with detecting model two as an organic whole, top board two and side locating plate two are connected for the arc with the one side that detects model two and is close to hollow blade Shank department leaf basin side, detect model two and the same setting of surface radian of hollow blade Shank department leaf basin side, the side of detecting model two is equipped with half conical groove two.

2. The tool for measuring and positioning the wall thickness of the hollow blade Shank according to claim 1, wherein the tool comprises: the conical hole and the first semi-conical groove are consistent with a detection positioning point on the leaf back side of the hollow blade Shank, and the second semi-conical groove is consistent with a detection positioning point on the leaf basin side of the hollow blade Shank.

3. The tool for measuring and positioning the wall thickness of the hollow blade Shank according to claim 1, wherein the tool comprises: one side face, far away from the hollow blade, of the first detection sample plate is fixedly connected with a first handle, and one side face, far away from the hollow blade, of the second detection sample plate is fixedly connected with a second handle.

4. The tool for measuring and positioning the wall thickness of the hollow blade Shank according to claim 1, wherein the tool comprises: the thickness of the first detection sample plate and the thickness of the second detection sample plate are both 1-3 mm.

5. The tool for measuring and positioning the wall thickness of the hollow blade Shank according to claim 1, wherein the tool comprises: one side surface of the first detection sample plate close to the hollow blade is provided with a logo shallow groove, one side surface of the second detection sample plate close to the hollow blade is provided with a typecasting shallow groove, and the depths of the logo shallow groove and the typecasting shallow groove are both 0.5-1 mm.

6. The tool for measuring and positioning the wall thickness of the hollow blade Shank according to claim 1, wherein the tool comprises: the diameters of the taper hole, the first semi-conical groove and the second semi-conical groove are all 1.5-2 mm.

7. A method for measuring wall thickness of a hollow blade Shank is characterized by comprising the following steps: the method comprises the following steps:

1. manufacturing a leaf back side positioning tool and a leaf basin side positioning tool by adopting a photosensitive resin 3D printing technology;

2. completely attaching a first detection sample plate in a blade back side positioning tool to the blade back side of the hollow blade Shank, and attaching a first upper positioning plate and a first side positioning plate to the inner wall of the hollow blade Shank to position the first detection sample plate;

3. ultrasonic wall thickness measurement is carried out on an upper conical hole and a semicircular conical groove of a detection sample plate I by adopting an ultrasonic measuring instrument, and the fixed-point positioning wall thickness of the back side of the Shank blade of the hollow blade is measured and compared with a standard value;

4. completely attaching a second detection sample plate in the leaf basin side positioning tool to the leaf basin side of the hollow blade Shank, and attaching a second upper positioning plate and a second side positioning plate to the inner wall of the hollow blade Shank to position the second detection sample plate;

5. ultrasonic wall thickness measurement is carried out on the upper semi-conical groove II of the first detection sample plate by adopting an ultrasonic measuring instrument, and the fixed point positioning wall thickness of the hollow blade Shank basin side is measured and compared with a standard value;

6. and (5) judging whether the wall thickness of the hollow blade Shank is qualified or not according to the comparison result of the wall thickness detected by the fixed point positioning in the steps 3 and 5 and a standard value.

Technical Field

The invention relates to the technical field of nondestructive testing, in particular to a measuring and positioning tool and a measuring method for the wall thickness of a hollow blade Shank.

Background

In the field of aerospace, a hollow blade casting is suitable for high-end aircraft engines and gas turbines, and is an indispensable precise casting. Because a large amount of high-temperature and high-pressure gas is generated during the operation of the aeroengine and the gas turbine, the cooling effect can be quickly achieved due to the limitation of materials on the shape of the blade. Therefore, the hollow blades with uniform wall thickness are adopted, and the air guided by the hollow blades from the air compressor passes through the cavity, so that the cooling effect is achieved. When the air current passes through the blade inner chamber, if the wall thickness of hollow blade is inhomogeneous, can direct influence the blade and appear the off-centre when rotating to influence the dynamic balance of whole turbine disc. Therefore, in the casting process of the hollow blade casting, the measurement and control of the wall thickness of the hollow blade casting are particularly important, in the process of measuring the wall thickness of the hollow blade, the wall thickness of a specified positioning point needs to be measured, and the selection of a measuring point is difficult to realize the precision guarantee. The existing hollow blade wall thickness measurement is carried out by an ultrasonic measuring instrument on specified points, the measured points need to be uniformly distributed, and the wall thickness value meets the tolerance of the specified value. The wall thickness cardboard is usually adopted to select to the measuring point and is fixed a position, but hollow blade's Shank department is narrower, and its location and extraction are all more troublesome, and Shank department has projections such as typecast of foundry goods information and LOGO in addition, and this has the interference to the location of wall thickness cardboard to make the cardboard can not pinpoint the measuring point. This patent is directed against these problems and is improving the innovation to Shank department wall thickness cardboard.

Disclosure of Invention

The invention mainly aims to provide a measuring and positioning tool and a measuring method for the wall thickness of a hollow blade Shank, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that: a measuring and positioning tool for the wall thickness of a hollow blade Shank comprises a blade back side positioning tool and a blade basin side positioning tool;

the blade back side positioning tool comprises a first detection sample plate, a first upper positioning plate and a first side positioning plate, wherein the first upper positioning plate and the first side positioning plate are integrally arranged with the first detection sample plate, one surfaces of the first upper positioning plate and the first side positioning plate, which are close to the blade back side of the hollow blade Shank, are in arc connection, the first detection sample plate and the first hollow blade Shank are arranged in the same surface radian, a first detection tapered hole is formed in the first detection sample plate, and a first semi-conical groove is formed in the side edge of the first detection sample plate;

leaf basin side location frock is including detecting model two, top board two and side locating plate two set up with detecting model two as an organic whole, top board two and side locating plate two are connected for the arc with the one side that detects model two and is close to hollow blade Shank department leaf basin side, detect model two and the same setting of surface radian of hollow blade Shank department leaf basin side, the side of detecting model two is equipped with half conical groove two.

Preferably, the tapered hole and the first half-cone-shaped groove are consistent with a detection positioning point on the blade back side of the hollow blade Shank, and the second half-cone-shaped groove is consistent with a detection positioning point on the blade basin side of the hollow blade Shank.

Preferably, one side surface of the first detection sample plate, which is far away from the hollow blade, is fixedly connected with a first handle, and one side surface of the second detection sample plate, which is far away from the hollow blade, is fixedly connected with a second handle.

Preferably, the thickness of the first detection sample plate and the thickness of the second detection sample plate are both 1-3 mm.

Preferably, a logo shallow groove is formed in one side face, close to the hollow blade, of the first detection sample plate, a typecast shallow groove is formed in one side face, close to the hollow blade, of the second detection sample plate, and the depths of the logo shallow groove and the typecast shallow groove are 0.5-1mm respectively.

Preferably, the diameter of the taper hole, the diameter of the first half taper groove and the diameter of the second half taper groove are all 1.5 to 2 mm.

A method for measuring the wall thickness of a hollow blade Shank comprises the following steps:

1. manufacturing a leaf back side positioning tool and a leaf basin side positioning tool by adopting a photosensitive resin 3D printing technology;

2. completely attaching a first detection sample plate in a blade back side positioning tool to the blade back side of the hollow blade Shank, and attaching a first upper positioning plate and a first side positioning plate to the inner wall of the hollow blade Shank to position the first detection sample plate;

3. ultrasonic wall thickness measurement is carried out on an upper conical hole and a semicircular conical groove of a detection sample plate I by adopting an ultrasonic measuring instrument, and the fixed-point positioning wall thickness of the back side of the Shank blade of the hollow blade is measured and compared with a standard value;

4. completely attaching a second detection sample plate in the leaf basin side positioning tool to the leaf basin side of the hollow blade Shank, and attaching a second upper positioning plate and a second side positioning plate to the inner wall of the hollow blade Shank to position the second detection sample plate;

5. ultrasonic wall thickness measurement is carried out on the upper semi-conical groove II of the first detection sample plate by adopting an ultrasonic measuring instrument, and the fixed point positioning wall thickness of the hollow blade Shank basin side is measured and compared with a standard value;

6. and (5) judging whether the wall thickness of the hollow blade Shank is qualified or not according to the comparison result of the wall thickness detected by the fixed point positioning in the steps 3 and 5 and a standard value.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, the wall thickness to be detected at the hollow blade Shank is positioned at a fixed point by the blade back side positioning tool and the blade basin side positioning tool, the Shank part can be quickly and effectively measured and controlled in a wax mold stage and a casting stage, the accuracy of selecting a measuring point is improved, and the consistency, stability and credibility of data are improved by using the same tool for control.

Drawings

FIG. 1 is a first perspective view of a blade back side positioning tool of the present invention;

FIG. 2 is a second perspective view of the blade back side positioning tool of the present invention;

FIG. 3 is a first perspective view of the leaf basin side positioning tool of the present invention;

FIG. 4 is a second perspective view of the leaf basin side positioning tool of the present invention;

FIG. 5 is a schematic view of positioning and attaching of the blade back side positioning tool and a hollow blade Shank;

FIG. 6 is a schematic view of positioning and attaching of the leaf basin side positioning tool and a hollow blade Shank;

fig. 7 is a schematic sectional view of the positioning and attaching of the blade back side positioning tool, the blade basin side positioning tool and the hollow blade Shank.

In the figure: 100. positioning tooling at the back side of the blade; 200. a leaf basin side positioning tool; 1. detecting a first sample plate; 2. a first upper positioning plate; 3. a first side positioning plate; 4. a tapered hole; 5. a first semi-conical groove; 6. a first handle; 7. logo shallow grooves; 8. detecting a second sample plate; 9. a second positioning plate is arranged; 10. a second side positioning plate; 11. a second semi-conical groove; 12. a second handle; 13. and (5) a typecasting shallow groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example 1

As shown in fig. 1 to 4, a measuring and positioning tool for the wall thickness of a hollow blade Shank comprises a blade back side positioning tool 100 and a blade basin side positioning tool 200;

the blade back side positioning tool 100 comprises a first detection sample plate 1, a first upper positioning plate 2 and a first side positioning plate 3, wherein the first upper positioning plate 2 and the first side positioning plate 3 are integrally arranged with the first detection sample plate 1, the first upper positioning plate 2 and the first side positioning plate 3 are in arc connection with one surface, close to the blade back side of the hollow blade Shank, of the first detection sample plate 1, the surface radians of the blade back sides of the hollow blade Shank are arranged in the same way as those of the surface of the blade back sides of the hollow blade Shank, a detection tapered hole 4 is formed in the first detection sample plate 1, and a semi-conical groove 5 is formed in the side edge of the first;

leaf basin side location frock 200 is including detecting template two 8, two 9 and two 10 of side locating plate of top locating plate, two 9 and two 10 and the two 8 settings as an organic whole of side locating plate of top locating plate and detection template, the one side that two 9 and two 10 and two 8 detection templates of top locating plate are close to hollow blade Shank department leaf basin side is the arc connection, the same setting of surface radian of detecting template two 8 and hollow blade Shank department leaf basin side, the side of detecting template two 8 is equipped with half conical groove two 11.

In this embodiment, leaf back side location frock and leaf basin side location frock all adopt photosensitive resin 3D printing technique to make according to the drawing.

In this embodiment, the tapered hole 4 and the half-conical groove one 5 are consistent with the detection positioning point on the blade back side of the hollow blade Shank, and the half-conical groove two 11 is consistent with the detection positioning point on the blade basin side of the hollow blade Shank.

In this embodiment, a side fixed connection handle 6 that hollow blade was kept away from to detection model 1, a side fixed connection handle 12 that hollow blade was kept away from to detection model two 8 is favorable to narrow and small position to be placed.

In this embodiment, the thickness of the first detection sample plate 1 and the thickness of the second detection sample plate 8 are both 1-3 mm.

In this embodiment, one side of the first detection sample plate 1 close to the hollow blade is provided with a LOGO shallow groove 7, one side of the second detection sample plate 8 close to the hollow blade is provided with a typecasting shallow groove 13, and the depths of the LOGO shallow groove 7 and the typecasting shallow groove 13 are both 0.5-1mm, so as to avoid typecasting and LOGO and avoid the influence of the bulge on the selection of the measurement point.

In this embodiment, the diameter of bell mouth 4, half conical groove one 5 and half conical groove two 11 is 1.5 to 2mm, and one side diameter of laminating hollow blade is 1.5mm, and one side diameter of keeping away from hollow blade is 2 mm.

Example 2

A method for measuring the wall thickness of a hollow blade Shank comprises the following steps:

1. manufacturing a leaf back side positioning tool and a leaf basin side positioning tool by adopting a photosensitive resin 3D printing technology according to a drawing;

2. completely attaching a detection sample plate I1 in a blade back side positioning tool to the blade back side of the hollow blade Shank, and attaching an upper positioning plate I2 and a side positioning plate I3 to the inner wall of the hollow blade Shank to position the detection sample plate I1, as shown in figures 5 and 7;

3. ultrasonic wall thickness measurement is carried out on the conical hole 4 and the semi-conical groove 5 on the detection sample plate I1 by adopting an ultrasonic measuring instrument, and the fixed point positioning wall thickness of the back side of the hollow blade Shank blade is measured and compared with a standard value;

4. completely attaching a second detection sample plate 8 in the leaf basin side positioning tool to the leaf basin side of the hollow blade Shank, and attaching a second upper positioning plate 9 and a second side positioning plate 10 to the inner wall of the hollow blade Shank to position the second detection sample plate 8, as shown in fig. 6 and 7;

5. ultrasonic wall thickness measurement is carried out on the upper semi-conical groove II 11 of the detection sample plate I1 by an ultrasonic measuring instrument, and the fixed point positioning wall thickness of the hollow blade Shank basin side is measured and compared with a standard value;

6. and (5) judging whether the wall thickness of the hollow blade Shank is qualified or not according to the comparison result of the wall thickness detected by the fixed point positioning in the steps 3 and 5 and a standard value.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.