A matching method and inner diameter calculation method of automobile wire harness covering based on cad platform

Abstract

The invention discloses an automobile wire harness covering matching method and an automobile wire harness covering internal diameter computing method based on a CAD (Computer Aided Design) platform. The internal diameter computing method includes that wire harness segments among nodes are selected according to known wire harness information in a wire harness diagram, the number of wires in the wire harness segments is determined according to path matching, an optimal center position of each wire cross section circle is selected by taking the distance between each wire harness segment and the center of gravity as a constraint condition, the wire harness segments are subjected to one-by-one optimization to obtain the minimum distribution diameter of the wire harness segments, and operation requirements on covering and margin control completion are guaranteed through empirical coefficients, thereby greatly improving computing precision of the minimum distribution diameter and providing the most reliable bases and treating methods for design and manufacture of wire harnesses. The matching method includes that a relational database is established, the internal diameter is determined rapidly and accurately, and the recommended pipe internal diameter is determined and screened out by relating the internal diameter to the relational database, or the precise winding length is obtained, so that cost and material preparation in the technology can be precisely estimated.

Description

technical field [0001] The invention relates to a method for matching the covering mode of an automobile wire harness, in particular to a matching method for covering an automobile wire harness based on a CAD platform and a method for calculating the inner diameter thereof. Background technique [0002] The automobile wiring harness is the main body of the automobile circuit network, and there is no automobile circuit without the wiring harness. The wire harness refers to the contact terminal (connector) punched from copper and the wire and cable after crimping, and then plastic insulator or metal shell on the outside, and then bundled with wire harness to form a connected circuit component. The wiring harness industry chain includes wire and cable, connectors, processing equipment, wiring harness manufacturing and downstream application industries. The wiring harness is widely used and can be used in automobiles, household appliances, computers and communication equipment, ...

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, after drawing the wire harness diagram, when specifying and designing the sheathing method, after selecting the wire harness segment between the branch points or between the branch point and the sheath in CAD, according to the selected wire harness The segment information is manually estimated and covered, and then input to the corresponding position of the selected wire harness segment in the wire harness diagram through the block; there are many classifications of automobile wire harnesses, and there are many situations that need to be adapted to. The number of segments is often thousands or even hundreds, and it is necessary to match the covering method of each wire harness segment. Not only is the workload huge, the efficiency is low, and the accuracy is poor, requiring the designer to perform multiple checks.

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