Rapid Cost Estimation And Quotation Of Gearbox Based On The Product Structure Tree

Quick quotation is the key to rapid response to customer requirements and cost is one of the most important factors for quotation. Therefore, the enterprises press for the cost estimation methods meeting themselves and the quick and accurate quotation system. It is an important research subject for enterprises to strengthen the agility and competition ability.According to the manufacturing cost method, price constitution of gearbox and the properties of each part are analyzed, and the estimation of direct cost is the key of cost estimation and quotation and the main content of this paper is pushed out. Based on the analyzing of the resource of the direct cost, the mapping between parts and cost of gearbox is offered, and through analyzing the method of gearbox selection and the structure composition law of gearbox, the structure composition of gearbox is obtained. After analyzing the structure characteristics of one gearbox and different type of gearboxes, the gearbox structure tree that is based on gearbox selection and very important to cost estimation and the modular method that is based on the structure tree, used for calculating the direct cost of gearbox quickly are put forward.By building the estimation model of direct cost of gearbox, analyzing the modeling method of each part and summarizing the process of cost estimation and quotation, the system of rapid cost estimation and quotation of Gearbox based on the product structure tree is developed. The system is based on the manufacturing cost method, operates in Windows series operation system, adopts Microsoft Office Access 2003 as database and VS.Net as the design platform, and uses C~# as unified programming language for the software. It concludes five parts: parameters setting, gearbox selection, generating structure tree, cost estimation and results output.At last, it takes one product from a gearbox factory as an example to demonstrate the process of cost estimation and quotation, which validates the rapidity, the exactness and the feasibility of the cost estimation and quotation system. The running result shows that the method is correct and the system is feasible.