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Propeller blade twist angle measuring fixture and method thereof

A technology for measuring fixtures and blades, which is applied to measuring devices, manufacturing tools, workpiece clamping devices, etc., can solve problems such as difficulty in detecting the torsion angle of blades, and achieve the goal of ensuring accuracy, improving work efficiency, and reducing production costs. Effect

Active Publication Date: 2017-02-08
CHANGHE AIRCRAFT INDUSTRIES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the profile of the blade body is a relatively complex curved surface, it is difficult to detect the twist angle of the blade with existing detection methods and detection tools, so a new detection process method and detection tools need to be designed

Method used

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  • Propeller blade twist angle measuring fixture and method thereof
  • Propeller blade twist angle measuring fixture and method thereof
  • Propeller blade twist angle measuring fixture and method thereof

Examples

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Embodiment Construction

[0016] The principle of the measuring fixture: make the 5 positioning points of the inner surface of the fixture fit the blade surface, so the right clamping plate of the fixture is parallel to the chord line of the blade, so the angle between the clamping plate and the vertical suspension line is equal to The torsion angles are equal, and a vertical support is made on the right pallet, and the torsion angle can be measured by installing an optical inclinometer on the support.

[0017] The blade twist angle measurement fixture includes a blade installation and positioning fixture and a measurement fixture, wherein the blade installation and positioning fixture is composed of a bracket unit, a blade root clamping end and a blade tail positioning support. The bracket unit is composed of two frames in a straight line, one frame is used to install the clamping end of the root of the blade, and the other frame is used to install the positioning support of the tail of the blade. The...

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Abstract

The invention belongs to the field of composite material blade torsional angle measurement and relates to a blade torsional angle measurement method and a blade torsional angle measurement fixture. According to the blade torsional angle measurement fixture, 5 positioning points of an internal profile are attached to the profile of a blade, so that a left clamping plate is parallel to the chord of the blade, and the included angle between the clamping plate and a vertical suspension is identical to a torsional angle; a support perpendicular to the right clamping plate is arranged on the right clamping plate, and the torsional angle can be measured simply by mounting an optical clinometer on the support.

Description

technical field [0001] The invention belongs to the technique of measuring the torsion angle of a composite material blade, and relates to a method for measuring the torsion angle of a blade and a fixture for measuring the torsion angle of a blade. Background technique [0002] The twist angle of the blade refers to the angle between the chord line of the blade body and the horizontal line at the blade bushing. [0003] Due to the aerodynamic characteristics and motion parameters of composite blades, there is a gradual twist angle from the root to the tip of the blade. In order to check whether the twist angle of the blade product meets the design of the drawing, it is necessary to detect the difference of the blade. Twist angle at the section. Since the profile of the blade body is a relatively complex curved surface, it is difficult to detect the twist angle of the blade with existing detection methods and detection tools, so a new detection process method and detection t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B11/00G01B11/26
CPCB25B11/00G01B11/26
Inventor 王广雷刘志辉汪开兵周俊
Owner CHANGHE AIRCRAFT INDUSTRIES CORPORATION