Turn-milling Complex Processing Researches On Variable Pitch And Depth Scraw

With the chemical,pharmaceutical,polymer injection molding,and other materials-based industries and the rapid development of widely disseminated, polymer processing such as extrusion,injection molding,plastic moulding and casting specific needs,such as screw.However,the screw is still in the processing is a difficult host,Screw in a variety of the manufacturing process,often encountered,such as variable pitch trough,such as tendons width,variable diameter at the end of the screw,Variable lead screw depth of the change in the actual machinery applications are an indispensable role.Lead changed variable depth of the screw machine processing by the general lack of continuous variable speed motor function and needs more cumbersome procedures for processing process,ordinary equipment is not difficult or processing.Even in ordinary devices through the fixture or carved lines,and means to achieve processing,but it is very difficult to high-precision machining of parts.Thereby constraining variable lead changed parts of the depth of application and promotion.Modern CNC technology development,and achieve continuous variable motion machine with variable motion control even provide a reliable guarantee,can be easily changed to achieve variable lead depth parts machining.For this reason,our response to this screw processing,the practice by some manual processing methods and the preparation of the screw processing.Heterotypic screw against,the use of advanced composite car milling machining centers for processing experiments,the paper screw machining simulation and CNC machining technology research,the principal tasks include the following:(1)Based on actual production and demand study,the use of Pro/E software screw spiral surface modeling.From the start of screw type for the application of a wide range of variable lead,and change deep trough screw example,the study used such screw spiral scan incision modeling methods and processes.(2)With Pro/E software screw machining tool path simulation and simulation,on the NC machining process changes,tool selection,tool path planning,optimization of processing parameters,a very important reference value.(3)In this paper variable lead screw variable groove depth contour of the difficult processing,combining practical experience,the processing research.Four interrelated using 5-axis machining center as a screw processing equipment,a tool path "Since the surface contour" approach to ensure that tool path along the direction of spiral curves,a tool for the protection role,and determine a reasonable processing parameters.(4)Lead changed to variable groove depth contour screw example,a screw processing experiments.Experimental results show that:the use of advanced composite car milling machining center,and is very fast in the actual production, production methods and more efficient processing.