ABSTRACT The manufacturing industries must correctly and quickly predict the production cost of a new product to face increasingly stiff competition. The proper reuse of the company’s know-how guarantees the correct estimation of the manufacturing cost while respecting the required quality. The use of the Digital Mock-Up (DMU) leads to the rapid determination of the manufacturing cost from the CAD data. Thus, this paper describes an approach to estimate manufacturing cost and to produce the machining strategy of a new model by the reuse of the manufacturing expertise, acquired during old projects. The new product closely related and similar to a previous design must be found. Thus, a comparison tool is developed, in manufacturing semantics. This tool quantifies the similarity between the query CAD model and company database. The tolerance values as well as geometrical and topological parameters are considered in the similarity calculation. Feature data modelling under a standard structure is used. Two cost computation methods are proposed. Consequently, the estimated cost and machining strategy, of the studied model, are deduced. A case study is presented to show the feasibility of the proposed approach to estimate the cost and to suggest a machining strategy during the design phase.

中文翻译：

---

一种CAD/CAM数据重用的制造成本估算方法

摘要 制造业必须正确、快速地预测新产品的生产成本，以应对日益激烈的竞争。公司专有技术的正确再利用可确保正确估算制造成本，同时尊重所需质量。使用数字模型 (DMU) 可以根据 CAD 数据快速确定制造成本。因此，本文描述了一种估算制造成本的方法，并通过重用在旧项目中获得的制造专业知识来制定新模型的加工策略。必须找到与先前设计密切相关和相似的新产品。因此，在制造语义方面开发了一种比较工具。该工具量化了查询 CAD 模型和公司数据库之间的相似性。在相似性计算中考虑公差值以及几何和拓扑参数。使用标准结构下的特征数据建模。提出了两种成本计算方法。因此，推断出所研究模型的估计成本和加工策略。提供了一个案例研究，以表明所提出的方法在估算成本和在设计阶段提出加工策略的可行性。