可轉(zhuǎn)位銑刀體結(jié)構(gòu)的分析與研究.pdf

1、Today’s demand for quality products at low cost requires a closer look at manufacturingoperations．High speed machining is a relatively new production technology；milling is one ofthe most versatile metal cutting processes

2、 of modem time and the milling cutter body plays agreat influence in the process overall efficiency．According to the related literature，theperformance of the milling cutter is not yet well explored though many efforts ha

3、ve been done． This paper presents an analytical study on milling cutter body；two methods of milling areintroduced．The major cutting tools materials，their structures and areas of application arepresented；a literature

4、of some research works in relation with the present topic is reviewed． The current research and development of high speed cutting technology in some developedcountries and china are explored，the issues faced by Chine

5、se manufacturing industry andefforts made in the area by many high academic institutions and research centers areemphasized． Three milling insert geometries have been studied and compared，three types of millinginsert

6、 clamp methods and their criteria of selection are analyzed． The fundamental of finite element method procedure is outlined，a face milling forcemodel，the expression of the maximum and average chip thickness，chip widt

7、h and cutting areaare established． A face milling cutter model with 7 cutting teeth is proposed to find the maximum numberof teeth in simultaneous cut witll their respective cutting angles；the corresponding cutting f

8、orcecomponents are computed．In the process of determining the cutting angles，two millingoperation cases of different workpieee cutting width to curer diameter ratios are proposed．Inthe first case，the ratio is equal to l

9、while in the second case it is 2/3；these represent conditionsof severe and good cutting process，respectively． The concept of contact analysis and contact classification is introduced；the contactcapabilities ofANSYS a

10、re outlined． ANSYS WflS used to perform finite element analyses of the proposed modeL.Nodalsolution results indicated that the cutter body，cutting insert and the screw react differently tothe applied loads．It Was fou

11、nd that，for the same loads and considering the individualcomponent，the screw experienced the highest deformation compared to the cutting insert andcutter body．Results of the two cases compared show that，the cutting proce

12、ss with ratio equal to1 experienced the highest deformation；these results are valid for bom single body andassembly． Stress analysis results solely focused on the cutter body show that relatively lowcompression stres

13、ses apply on the cutting insert seat internal diameter peripheral edge． With regards to the above results and simulation conditions，it Can be deducted first，thatthe values are consistent with the theoretically comput