文档介绍：л????? CAD ????? QQ 194535455 ???????????жⅴ?????????θ?????????????〃??ж????????ж???п?θ???????????????п?????θж????п??ж???????ж?????????????????у???θъ????人??????θ??????????θ????????????????ж??ж??θ???????????????????????θ???″?〥??????θ?ъ?????????ぁ?θ??????????пθ??????жθ????????ιι?Θ?θ????????θ???????????п???п?????θ??????????θ?????????????????θ?????θ????у???????θж??儎?????????????????????????θ?????????????????????ж????????????????рθ???????????θ???????????????ㄥ?θ???????????θ?ъ??????????????θ???????????????〃??у?????????????????????????р???????????????????????????θ?????????θ?ъ?????????θ?????????????????θ???????θ?????????θ???????僂?θ?????????????????????θ?????????θ??????????????????θ??????????θ??л????? CAD ????? QQ 194535455 ???????θ???????????????????????????????????????????θ????????????????????θ?????????θ??????????″????????????ж???????????θ???????????????????????僂???р?????θ???ж?????????θ???????????????θ?????????????????????ф僂?θ???????????????????????θ???????????从?????????????сθ????с??φδ1ε??〃у?????????????????ガδ2ε??????????????????????????????δ3ε?? AutoCAD ?????1 ?θ???2???4?????? AutoCAD ?????????θ???????????θ?儎????????????φ????χ??χ????χ??χл????? CAD ????? QQ 194535455 Abstract The purpose of this design is to design a single-screw plastic extruder, plastic extrusion machines also belong to one type of plastic machinery. Single screw effective length is generally divided into three sections, according to the screw diameter, screw depth, the effective length of the pitch to determine the three sections, each one-third by the general division. After discharge port last thread started calling transportation section, the material here can not claim plastics, and here is preheated, the real squeeze pressure, the material here is actually a solid plug, can be understood as the material is squeezed here like a child, like a solid, so its function is plete the transportation task. The second pression section called, this time by a large spiral groove volume es smaller, and the temperat