Clamp for measuring linearity of dovetail-shaped tenon of aeroengine blade

An aero-engine, dovetail-type technology, which is applied to measuring devices, mechanical devices, mechanical measuring devices, etc., can solve problems such as affecting the straightness test results of tenon flatness, reducing product testing quality, and inconsistency in positioning status, avoiding positioning Instability, compact structure, the effect of reducing the processing cost

Active Publication Date: 2018-12-11
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unreasonable design of the positioning structure of the measuring tool, the positioning state is inconsistent during the testing process, which affects the testing results of the straightness of the tenon and tenon surface, and reduces the testing quality of the product.

Method used

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  • Clamp for measuring linearity of dovetail-shaped tenon of aeroengine blade
  • Clamp for measuring linearity of dovetail-shaped tenon of aeroengine blade
  • Clamp for measuring linearity of dovetail-shaped tenon of aeroengine blade

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Embodiment Construction

[0033] The present invention is described in further detail below in conjunction with accompanying drawing:

[0034] see figure 1 , the dovetail tenon 3 is at the tail of the blade 32, and the angle between the degree surface 30 and the bottom surface 31 of the dovetail tenon 3 is β 1 .

[0035] The fixture includes a bracket 21 , an inclined positioning plate 12 and a measuring tool. The inclined positioning plate 12 is fixedly installed on the bracket 21 , and the measuring tool is fixedly installed on the inclined positioning plate 12 .

[0036] see figure 2 and image 3 , Support 21 comprises base 7, facing surface 17, first pillar 18 and second pillar 19; One side of base 7 is provided with the first pillar 18 perpendicular to base 7, and the other side is provided with the second pillar perpendicular to base 7 The support 19; the upper surface of the first support 18 is the opposite surface 17; the top surface of the second support 19 is lower than the lower edge of...

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Abstract

The invention discloses a clamp for measuring the linearity of a dovetail-shaped tenon of an aeroengine blade. An inclined positioning plate is fixedly installed via a support, a locking mechanism isfixedly installed on the inclined positioning plate, and a supporting mechanism is installed between the inclined positioning plate and a pedestal; and when the linearity of the tenon is measured, thesupporting mechanism supports the locking mechanism tightly, and the locking mechanism bears a force and clamps the tenon; an included angle between the inclined positioning plate of the clamp and the horizontal plane equals that between the metering side and the bottom side of the tenon, and it is ensured that the metering side can be arranged horizontally when the tenon is in a clamp; the uppermetering side of the tenon is positioned locally, the lower metering side is positioned wholly, and the problem of positioning instability in the detection process is avoided; and the meter is pushedin the metering side of the tenon to implement detection, uncertainty of three-point contact detection is eliminated, and the detection quality is improved. The measuring clamp is compact in structure, blade positioning operation is simple, rapid and safe, maintenance is simple, the manufacturing cost of the clamp is reduced, and the component processing cost is reduced.

Description

【Technical field】 [0001] The invention belongs to the field of measuring tool for straightness of dovetail tenons of aeroengine blades, in particular to a fixture for measuring the straightness of dovetail tenons of aeroengine blades. 【Background technique】 [0002] With the development of aviation technology, dovetail tenon blades of engine blades are widely used because of their small size, light weight and ability to withstand large loads. Tenon surface size requirements are more stringent. The currently used measuring tools are positioned by the bottom surface of the tenon, and the inspector manually presses it, and the straightness is tested in the form of three contacts of the measuring tool touching the degree surface at the same time. Due to the unreasonable design of the positioning structure of the measuring tool, the positioning state is inconsistent during the testing process, which affects the testing results of the straightness of the tenon and tenon surface, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/00G01B5/25
CPCG01B5/0002G01B5/003G01B5/25
Inventor 侯飞龙刘金凤张义德杜家燕蒲海龙师胜男豆雷红张静怡
Owner AECC AVIATION POWER CO LTD
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