Study On Product Quotation System Development Based On Machining Features And Its Key Problems

At present,with the rapid development of market economy and the trend of global integration,market competition has become increasingly fierce and customers have raised more and more requirements.As a result,the pattern of manufacturing industry is transforming from mass production into mass personalized customization now.In order to adapt to the market and satisfy a variety of customer requirements,manufacturing enterprises need to conduct customized design for products according to users' individual needs.In the process of product customization,however,customers' diversified requirements and irregular changes of the market will extend the product development period and corresponding quotation time,and reduce the cycle of product customization.In this way,there will be a risk of customer losses,and the company's benefit will be directly affected.By aiming at this situation,a product quotation method based on machining features is proposed in this paper.In this method,product quotation is divided into parts quotation and components quotation.Moreover,a complete set of product quotation system based on Creo and product quotation information inquiry system based on Web is developed.The specific research contents are as follows:(1)In parts quotation,the price of parts is classified into material price and machining price.Based on studies about automated feature recognition technology and CAD secondary development methods,feature recognition is conducted for the 3D model,and features that cannot be recognized are added manually.The machining price is calculated according to the table for base cost of feature machining established in the database,and then various attributes related to the quotation are extracted automatically,including material and quality.The material cost of parts is automatically calculated according to the base cost of materials and loss coefficient of material processing in the database.(2)In product quotation,all components and parts of the product are traversed.Product quotation is realized by combining with the hierarchical relation of quotation between the product and its components and parts as well as product assembly cost according to case library of parts price,case library of standard parts price and case library of electric parts price.(3)The product quotation system based on Creo and product quotation information inquiry system based on Web are developed in virtue of Creo,VS2010,SQL Server2008 and Web technology.Besides,this quotation system is applied to quotation for a certain enterprise's high-power inverter,and the efficiency of product quotation is improved.Hence,the feasibility of this product quotation method based on machining features is verified.