A kind of shape design method of special wrench for complex space

A design method and space technology, applied in computing, special data processing applications, instruments, etc., can solve the problems of low design efficiency of complex space wrenches, and achieve the effect of solving the problem of wrench space interference

Active Publication Date: 2022-07-15
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned technical problems, the present invention proposes a shape design method of a special wrench for complex spaces, which can effectively solve the problem of low design efficiency of wrenches in complex spaces by designing and optimizing the central axis of the profile of special-shaped wrenches

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  • A kind of shape design method of special wrench for complex space

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Embodiment 1

[0043] As a basic embodiment of the present invention, the present invention includes a shape design method of a special wrench for complex spaces, which mainly considers the accessibility of tightening points in complex spaces, worker operating torque, space interference and other factors, and is based on A-Star pathfinding. Algorithm, construct evaluation function to design and optimize the profile center axis of special-shaped wrench. Specifically include the following steps:

[0044] a. Build a complex space model to mark the tightening point and operation area;

[0045] b. Abstract the complex space model and establish discrete space map;

[0046] c. Process the discrete space map and mark the passable area and the impassable area;

[0047] d. Build an evaluation function to convert the constraints of the wrench design into weights;

[0048] e. Use the pathfinding algorithm to select the optimal path of the evaluation function;

[0049] f. Smooth the path curve and ve...

Embodiment 2

[0051] As a preferred embodiment of the present invention, the present invention includes a shape design method for a special wrench for complex spaces. A pathfinding algorithm is used to design a complex space wrench, and the design constraints are constructed as an evaluation function to obtain a contour curve that better meets the requirements of use. , which includes the following steps:

[0052] a. Build a complex space model to indicate tightening points and operating areas.

[0053] a 1 . According to the actual space layout, establish a three-dimensional model of the working area in equal proportions;

[0054] a 2 . Calculate the tightening torque of the wrench through the required tightening force of the bolt; carry out ergonomic analysis to obtain the magnitude of the manually applied tightening force under this working posture, and calculate the tightening torque length, which is the force point on the force action plane to tightening point distance;

[0055] a ...

Embodiment 3

[0076] As the best mode for carrying out the present invention, refer to the appendix of the specification. figure 1 , the present invention includes a shape design method of a special wrench for complex space, comprising the following steps:

[0077] a. Build a complex space model to indicate tightening points and operating areas.

[0078] A certain bolt needs a tightening torque of 60N*m, and the working height is 1.2m. At this height, the maximum stable downforce of the adult’s arms is 150N, so the length of the wrench needs to be 60N*m / 150N=0.4m, and the working radius should be at least 0.4 The outer contour of the spatial structure within m is 3D modeled, the force application area is marked with blue (RGB value: 0, 0, 255), and the force point is marked with red (RGB value: 255, 0, 0). The color selection is black (RGB values: 0, 0, 0).

[0079] b. Abstract the complex spatial model and build discrete spatial maps.

[0080] Determine the discrete scale of the space m...

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Abstract

The invention relates to the technical field of mechanical design, in particular to a shape design method of a special wrench for complex space, comprising the following steps: establishing a complex space model, marking tightening points and operation areas; abstracting the complex space model, and establishing a discrete space map ; Process the discrete space map to mark the passable and impassable regions; build an evaluation function to convert the constraints of the wrench design into weights; use the pathfinding algorithm to select the optimal path of the evaluation function; smooth the path curve and verify Whether there is interference in space. Through the design method, the contour center axis of the special-shaped wrench is designed and optimized, which can effectively solve the problem of low design efficiency of the complex space wrench.

Description

technical field [0001] The invention relates to the technical field of mechanical design, in particular to a shape design method of a special wrench for complex spaces. Background technique [0002] With the improvement of equipment manufacturing level, the design of high-end electromechanical products such as automobiles, airplanes, ships, missiles, etc. is becoming more and more integrated and miniaturized. There are often areas where pipelines, cables, and parts are concentrated in their products, that is, complex space. When manufacturing and repairing parts in complex spaces, it is usually necessary to use a wrench to install or remove bolts. However, due to the poor open space and narrow areas in these areas, it is difficult to use a conventional all-purpose wrench to operate, and a special-shaped wrench is usually designed to complete the installation operation. [0003] The current special-shaped wrench is usually designed according to the designer's experience, an...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06F30/17G06T17/05
CPCG06F30/17G06T17/05
Inventor周凡刘玉松陈振沈英东陈程杨二豪
OwnerCHENGDU AIRCRAFT INDUSTRY GROUP