Research Of Virtual Assembly Technology For Multi Spindle Box

With the development of science and technology,machinery manufacturing industry has undergone tremendous changes today,the machining accuracy has reached a very precise level,but the assembly accuracy still depends on the skill level of staff.Therefore,the assembly quality became the bottleneck to improve product accuracy.Assembly is a very important part of the product life cycle.With the development of new technologies,new processes and new materials,shortening of processing time,the assembly time is to be a major factor of influencing the product life cycle.In the traditional assembly process,when assembly problems arise between the parts,only can be done is to return to the design aspects of pro duct, identify the problems,re-design the product and re-generate the trial samples,re-assembled to test the success of design.The mode of assembly lagging behind the design aspects completely don’t meet the business requirements of rapid response to market.The virtual assembly can solve this problem,it uses a virtual prototype model instead of the physical model to complete the assembly process,simulates real assembly process in virtual platform.After identifying assembly problems,it can modify the design of product in time and improve productivity.The topic model multi spindle box components in the way that combinating parametric design and virtual prototyping.About the virtual assembly technology of multi spindle box,the main contents include:based on CATIA,the powerful3D software as platform,using its part modeling module,establish three-dimensional model of multi spindle box components;parametrized model some standard parts of commonly used, and establishment the standard parts library,make convenient for queries and calls to model,and reduce the workload of duplication of modeling.Simulate assembly of three-dimensional model for multi spindle box,synthesize advantage of removal method and precedence constraint method,and propose cut-set method to design assembly path for product,to carry on assembly sequence planning.After the completion of the assembly,analysis the assembly results,and examine the product can be assembled.Assembly process and product design can paralel,and timely feedback the assembly effect to product design,to shorten the product development cycle,and save production costs.