Rapid design technology of spiral conformal cooling channels for injection mould
In response to the drawbacks of the complex,time-consuming,and error-prone in design process of spiral confor-mal cooling channels of injection moulds,an automatic generation method for spiral conformal cooling channels was proposed based on the characteristics of the spiral structure and combined with cooling channel design experience.In this method,auxiliary spiral line was first generated based on the minimum bounding box technology according to the size of the mould core,and the spiral line was projected onto the offset surface of the mould surface to obtain the reference trajectory line.Next,the reference trajec-tory line was sorted and the incremental arc-length method was used to automatically generate control points.The distance from the control points at the beginning and end of the reference trajectory line to the coordinates of the inlet and outlet was calculated and compared,and then all control points were sorted according to the growth direction of the conformal cooling channels.Finally,the spline curve function was called to string all control points in order to generate the scanning trajectory line,and the cooling channel was formed by scanning along the trajectory line.An automatic design module for conformal cooling channels based on NX soft-ware platform was secondary developed and seamlessly integrated with NX software,implementing all the algorithms proposed by above method.The example verification shows that this method significantly shortens the design time,reduces the workload of designers,improves the design efficiency and quality of conformal cooling channels,and has certain application value.
secondary developmentmould designconformal cooling channelsspiral cooling channelscooling system
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