面向零件不可拆的复杂产品拆卸序列规划

Complex product disassembly sequence planning oriented to defective parts

针对实际拆卸过程中可能遇到的零件不可拆问题,为提高拆卸效率、降低拆卸成本,提出了面向零件不可拆的复杂产品拆卸序列规划方法。为更好地表达产品拆卸信息,构建了拆卸混合图模型;为产生新拆卸方案,提出了模型重构方法,该方法通过构建已拆卸零部件集、受影响零部件集、子受影响零部件集来实现模型的更新;根据目标拆卸体的可拆卸性,并结合拆卸序列优化算法来产生具体的拆卸方案和拆卸序列。以洗衣机为例对所提方法进行了验证,结果表明该方法较好地解决了零件不可拆问题,产生了切实可行的拆卸方案和拆卸序列,降低了拆卸成本、提高了拆卸效率和拆卸安全性。

In view of the fact that some parts were unable to be disassembled in process of removing components from an electromechanical product, a Disassembly Sequence Planning （DSP） approach oriented to defective parts was proposed to improve the disassembly efficiency and to reduce the cost. Disassembly hybrid-graph model was constructed to describe the constraints of a product. A method of Model Re-Built （MRB） was presented to generate new disassembly sequence after constructing Set of Disassembled Parts （SDP）, Set of Affected Parts （SAP） and Sub-Sets of Affected Parts （SSAP）. The optimum sequence and approach for disassembly were generated according to the de- tachability of components combined with a disassembly sequence optimization algorithm. A case study of washing machine demonstrated that the proposed method could solve the unable disassembly problem better. The disassem- bly scheme and disassembly sequence were generated by this method, and the disassembly cost was reduced, the dis- assembly efficiency as well as the disassembly security were improved.