A design method for sheet metal process lugs
A technology of craft lugs and design methods, applied in computing, special data processing applications, instruments, etc., can solve problems such as troublesome conversion processes, achieve uniqueness, improve design speed and accuracy, and speed up design speed and efficiency Effect
Active Publication Date: 2016-07-06
江苏米格电气集团股份有限公司
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Problems solved by technology
However, in actual production, separate 2D and 3D design drawings are still used, which brings troubles for designers in the conversion process from 2D drawings to 3D drawings
Method used
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[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0024] Such as figure 1 with figure 2 As shown, in the actual application process, the design method of the sheet metal process lug designed by the present invention comprises the following steps:
[0025] Step 01. According to the boundary information of the sheet metal part, determine the position of the connecting edge L that connects the sheet metal part to one of the edges on the ear piece, and construct an extension plane that takes the connecting edge L as the edge and is tangent to the sheet metal part;
[0026] Step 02. According to the position of the connecting edge L and the design geometric parameters of the lugs, the lugs are coincident with the extension plane, and the outline of the lugs is directly determined on the extension plane, which specifically includes the following steps:
[0027] Step 0201. ...
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The invention relates to a design method of a sheet metal component technical lug. The method comprises the following steps: firstly determining positions of the connecting edges, which are connected with one edge of a lug, of a sheet metal component, and constructing an extension plane which is not vertical to a region in which the connecting edges of the sheet metal component are positioned, wherein the connecting edges are taken as the edges of the extension plane; superposing the lug and the extension plane according to the positions of the connecting edges and the design geometric parameters of the lug, and directly determining a lug outline on the extension plane; finally projecting the lug outline positioned on the extension plane onto a curvature extension plane of the sheet metal component in a direction vertical to the surface of the sheet metal component, and generating a three-dimensional sheet metal component technical lug according to the outline protected on the surface of the sheet metal component. The design method of the sheet metal component technical lug can be used for rapidly realizing conversion of the sheet metal component technical lug from a two-dimension mode to a three-dimension mode, and greatly quickening the design speed and design efficiency of the sheet metal component technical lug.
Description
technical field [0001] The invention relates to a method for designing lugs of a sheet metal process. Background technique [0002] The design of process lugs is of great significance in the design of sheet metal parts (especially aircraft skin parts). The lugs can be used for installation, fixing, transportation and hoisting. At present, the design of craft lugs is manually added and operated by craftsmen through CAD software, and the steps are cumbersome and inefficient. In order to meet the needs of the development of modern digital design and manufacturing, design information and manufacturing information are jointly defined in the 3D digital model of the product to change the current coexistence of 3D models and 2D engineering drawings and better ensure the uniqueness of product definition data. However, in actual production, separate 2D and 3D design drawings are still used, which brings troubles to the designer in the conversion process from 2D drawings to 3D drawing...
Claims
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IPC IPC(8): G06F17/50
Inventor 夏建生窦沙沙李青祝
Owner 江苏米格电气集团股份有限公司