基于CAD/CAPP模型的焊接结构成本估算方法

Investigation to Method of Cost Estimation for Welding Structure Based on CAD/CAPP Model

广泛采用焊接结构是机械制造工艺发展的一个重要趋势，分析了影响焊接成本的各种因素，研究了焊接工艺的成本结构及其估算规律，详细分析了焊接设计特征的表达方法及其向工艺特征转化的策略和方法，提出了基于ＣＡＤ／ＣＡＰＰ模型的焊接成本估算策略与方法，开发了相应的成本估算软件，使产品设计师能在设计阶段就较准确地预测产品的制造成本，为产品市场报价或重新设计及改进提供了依据，以液压挖掘机斗杆为例验证本文的研究工作。

It is an important trend to wide use welding structure in machinery engineering so that to estimate welding cost is becoming highlight at present.The paper analyses all kinds of the factors which affect the cost of welding,develops the character model,puts forward the tactics and methods of welding cost estimating.A relevant computer aided software of cost estimation is developed to calculate exact cost of product at design stage.It is tested on the backhoe stick of hydraulic excavator as an example.