Method for positioning and assembling composite material rotor blade of C-shaped beam structure

A composite material and rotor blade technology, which is applied to other household appliances, household appliances, household components, etc., can solve the problems of reducing the service life of the girders, the flight safety of the composite rotor blades, the folds of the girders, and the difficulty of forming a fixed shape. , to achieve the effect of improving product assembly efficiency, improving product qualification rate, and accurate and rapid assembly

Inactive Publication Date: 2020-06-02

CHANGHE AIRCRAFT INDUSTRIES CORPORATION

0 Cites 0 Cited by

AI-Extracted Technical Summary

Problems solved by technology

The problem is mainly manifested in two points: A. When the prepreg girder belt is not cured, its texture is soft and it is difficult to form a fixed shape; B. It is difficult to determine the positioning datum of the lower mold girder, and the accuracy of its position directly affects the blade foam core assembly

The existing technical solution is to use scales and oth...

Method used

2. lower die girder 3 is first installed on lower die skin, uses chord to cross-section shape model 8 to carry out p...

Abstract

The invention belongs to the technical field of molding of a composite material rotor blade, and provides a method for positioning and assembling the composite material rotor blade of a C-shaped beamstructure. The method includes the steps of paving a lower mold skin (2) and an upper mold skin (6) on a lower press mold (1) and an upper press mold (7) respectively; mounting a lower mold girder (3)on the lower mold skin at first, and positioning and calibrating the lower mold girder (3) by using chordwise profile outline templates (8) to ensure that the girder is accurate in placement positionand direction; mounting a blade foam core (4) on the lower mold girder (3), and then mounting an upper mold girder (5); and assembling the upper press mold and the lower press mold which are paved with the skins, and carrying out heating, pressurizing and curing. According to the method for positioning and assembling the composite material rotor blade of the C-shaped beam structure, the chordwiseprofile outline templates at different positions are arranged, accurate and rapid assembly of parts in the composite material blade is realized, and the product assembly efficiency is improved. By means of the method for positioning and assembling the composite material rotor blade of the C-shaped beam structure, the mold pressing quality of the composite material rotor blade of the C-shaped beamstructure is improved, and the product qualification rate is improved.

Application Domain

Domestic articles

Technology Topic

Structural engineeringManufacturing engineering +3

Image

Examples

Experimental program(1)

Example Embodiment

[0022] The purpose of the present invention is to provide a new method for positioning and assembling a composite rotor blade with a C-beam structure, which includes the following steps:

[0023] 1. Finish the paving of the lower mold skin 2 and the upper mold skin 6 on the lower die 1 and the upper die 7 respectively;

[0024] 2. Install the lower mold girder 3 on the lower mold skin first, and use the chordal profile shape template 8 to position and calibrate the lower mold girder 3 to ensure the accurate placement and orientation of the girder;

[0025] 3. After installing the paddle foam core 4 on the lower mold girder 3, install the upper mold girder 5;

[0026] 4. Use rolling board and other tools to comb and compact the composite material beam;

[0027] 5. Clamp the upper mold and the lower mold that have been pasted with the skin, and heat and press to cure.

[0028] Further, the shape of the two-point area A and B of the chordal section shape template is selected from the contour of the foam core of the blade in contact with the lower mold beam;

[0029] Furthermore, the chordal section shape template is set in multiple groups along the lengthwise direction of the blade, and the selected position is mostly selected in the area where the contour shape of the foam core part of the blade changes drastically;

[0030] Further, for the positioning method of the chord-direction profile shape template, a scale line corresponds to the front edge boundary line of the lower die, and the b scale line corresponds to the rear edge boundary line of the lower die;

[0031] Further, the manufacturing tolerance of the outline dimension of the chord-direction profile shape template is controlled within ±0.2 mm.

PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Method for positioning and assembling composite material rotor blade of C-shaped beam structure

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

Similar technology patents

Preparation method of dinner plate primary product

Injection molding machine multistage mold locking molding method

Hydraulic control system for paver and paver

Method for internally arranging steel wire without exposure in manufacturing process of long and thin sand core

Wrapped type pipe manufacturing mold core assembly