CN103466075A

CN103466075A - Weight reduction design method of structural band plate

Info

Publication number: CN103466075A
Application number: CN201310373980.5A
Authority: CN
Inventors: 马存瑞; 韩丽敏; 赵洁; 李东; 凌晓涛
Original assignee: Xian Aircraft Design and Research Institute of AVIC
Current assignee: Xian Aircraft Design and Research Institute of AVIC
Priority date: 2013-08-23
Filing date: 2013-08-23
Publication date: 2013-12-25

Abstract

The invention belongs to the field of airplane structure design, and particularly relates to a weight reduction design method of a structural band plate. The method is characterized by comprising the steps of forming openings at the upper edge and the lower edge of the band plate, wherein a determination method of edge lines of the openings comprises the steps that basic circles (2) taking all bolt centers as circle centers and 2d as semidiameters are drawn, excircles (3) with the semidiameters of 2d are drawn on the outer side of the band plate and are tangent to the two adjacent basic circles (2), minor arc parts of the basic circles or the excircles between two adjacent common tangent points (4) are reserved, and connection lines of the minor arcs are the edge lines (5) of the openings. The method has the benefits that: 1, the weight is effectively reduced by 5% on the premise that mechanical properties of spare parts of the band plate are not reduced, and 2, since the openings (6) are formed in fastener positions on the improved band plate, a worker of an assembly line can accordingly avoid the problem of wrong nail distribution, and the error prevention is improved.

Description

A kind of loss of weight method of designing of structure band plate

Technical field

The invention belongs to the aeroplane structure design field, be specifically related to a kind of loss of weight method of designing of structure band plate.

Background technology

On aircaft configuration, many parts are docked by band plate, as wing fixedly front and rear edge with docking, the leading edge lid of wing wallboard, with wing wallboard, be connected etc.The tradition band plate mostly is regular aluminum alloy plate materials, and cost is higher, and weight is heavier, and there is very large disadvantage in the field strict to weight in airplane design.In addition, in band plate part equipment process, the fastener dislocation often occurs, cause design and production efficiency to reduce.

Summary of the invention

The objective of the invention is: under the prerequisite that meets power transmission and requirement of strength, provide a kind of lightweight, assembling is reliable, error protection is high structure band plate.

Technical scheme of the present invention is: a kind of loss of weight method of designing of structure band plate, the diameter of bolt is d, the open and clear mouth at the upper and lower edge of band plate, the gap edge line determines that method is: take all bolts center is the center of circle, 2d is that radius is done basic circle 2, in the band plate outside, does the circumcircle 3 that radius is 2d, and circumcircle 3 is cut altogether with adjacent two basic circles 2, retain basic circle or circumscribed minor arc part between adjacent two public point of contacts 4, the line of all minor arcs is gap edge line 5.

The invention has the beneficial effects as follows: the first, do not reduce under the mechanical property prerequisite of band plate part, effectively loss of weight 5%; The second, after improving, band plate is made gap 6 because tighten firmware location according to band plate, when the fitting line workman constructs, can avoid according to this problem of nail mistake, improves error protection.

The accompanying drawing explanation

Fig. 1: conventional confguration band plate version schematic diagram

Fig. 2: basic circle schematic diagram of the present invention

Fig. 3: tangent circle schematic diagram of the present invention

Fig. 4: gap edge line schematic diagram of the present invention

Fig. 5: structure band plate form schematic diagram of the present invention

The specific embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail:

A kind of loss of weight method of designing of structure band plate, the former edge line 1 of band plate, discharged bolt point position, and the diameter of bolt is d, and the bolt back gauge is 2d, and spacing is 4.5d.The design's method characteristic is: open and clear mouthful at the upper and lower edge of band plate, the gap edge line determines that method is: take all bolts center is the center of circle, 2d is that radius is done basic circle 2, do in the band plate outside circumcircle 3 that radius is 2d, circumcircle 3 is cut altogether with adjacent two basic circles 2, retain the minor arc part of basic circle 2 between adjacent two public point of contacts 4 or circumcircle 3, the line of all minor arcs is band plate gap edge line 5, obtains gap 6.

Claims

1. the loss of weight method of designing of a structure band plate, the diameter of bolt is d, it is characterized in that: open and clear mouthful at the upper and lower edge of band plate, the gap edge line determines that method is: take all bolts center is the center of circle, 2d is that radius is done basic circle (2), in the band plate outside, does the circumcircle (3) that radius is 2d, and circumcircle (3) is cut altogether with adjacent two basic circles (2), retain basic circle or circumscribed minor arc part between adjacent two public point of contacts (4), the line of all minor arcs is gap edge line (5).