Research Of Flexible Fixture For "Multi-species, Variable-batch" Production Line

Along with the advancement of science and technology, from a fixture had auxiliary tool development become efficiency process equipment. Machining process more flexible, and the degree of flexibility fixture rapid transformation, and has become the product or manufacturing system operation bottleneck, after recombination will seriously affect the manufacturing system design and build cycle, productivity, quality and cost. Modern manufacturing in urgent need to adapt the product change flexible clamp.Based on the current product design process of feature modeling technology and application methods and theory of function module design method, and the products CAFD fixture design (cad) and other advanced technical support, the theory of stochastic variation of batch production conditions, different specifications of products in a line of production line, the new requirements of fixtures is analyzed and studied, Put forward many varieties of new product mix line production concept and design method of flexible clamp.Firstly, using the feature modeling technology product information model, through the analysis of the components, based on the calculation of similarity based on the similarity of the parts of the product line production judgment method. According to the production line of products, analyzes the influence of fixture design of fixture application, and puts forward three problems need to be solved:adjusting mode, adjust the accuracy and adjust the time.Then, from the angle of system analysis and design of different factors, the influence of fixture system modeling, model is established in jig fixture space, use "radical" design of fixture design, flexible adjustment method can complete the design. According to the new achievement fixture designing forward movement of function decomposition, fixture and movement of fixture structure and function of error is analyzed, and the influence of fixture design error through controlling accuracy can be finished fixture of control, On the basis of fixture design, on-time production design thought, system, a fixture production site management production process, the method to solve the flexible clamp application of adjustment problems.Finally, based on the knowledge of the rules of case-based reasoning method and knowledge reasoning method, combining with the advantages of both is established based on the examples of the "rules of+based reasoning methods of fixture design flow chart, Through this method can realize the automation design of fixture, improve the efficiency of fixture design.