Research On The Turn-milling Combined Machining Process Of Hob Before Heat Treatment

Hobbing tool is a kind of special workpiece with complex shape,many kinds and high precision,but small production batch,its production cycle is long and many processes.The research of compound machining technology is an effective means to improve the production efficiency of hob.Based on the actual processing situation of a famous tool factory in China,this paper analyzes the machining process of hob before heat treatment.A new hob processing method based on turn-milling is put forward in this paper.Design the process flow of hob before heat treatment based on turn-milling combined,and carries out the parametric design of hob CNC turn-milling combined program,and carries out the processing simulation of hob by VERICUT software.This paper first analyzes the process dispersion problem of the traditional hob before heat treatment with one process and one machine tool,and concludes that although the traditional process has basically realized the CNC machining,it is still in the production level of multi-machine tools and multi-processes.the current situation of hob before heat treatment machining is analyzed in depth,and the process flow of hob before heat treatment based on turn-milling is designed.Secondly,the hob model established by CAD software is used to extract the geometric parameters of the hob workpiece and combine with the hob processing parameters.Finally,the hob turn-milling combined machine model is built.The newly built turn-milling combined machine tool is imported into VERICUT software.the hob turn-milling combined simulation machining is carried out,and the original design model and the part model are obtained after simulation machining are compared and analyzed.Through the analysis and investigation of the above contents,it effectively improves the machining efficiency of hob and provides theoretical support for the actual machining production of hob turn-milling combined.It has certain guiding significance for the actual machining production of hob turn-milling combined.