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我厂于八四年接受了机械工业部下达的调焦凸轮及小模数齿轮精密冲裁的试验研究任务。通过此两副模具的设计制造,对精冲领域的各种技术问题进行探讨。 调焦凸轮及小模数齿轮如图1,图2所示。 调焦凸轮系44—17照相机的主要零件。每架照相机用4片,需量很大(上照总厂每月需15—20万片)。零件外形为阿基米德螺线,精度要求高,用放大20倍的投影板在投影仪下检验,内外形应与投影板完全一致,零件最薄壁部为1.4mm,零件断面要求垂直且光洁度?7以上。 该零件的原工艺为:落坯料——整修外
I plant in 1984 accepted the Ministry of Machinery Industry focus cam and small modulus gear precision blanking the pilot research mission. Through the design and manufacture of these two molds, various technical problems in the fine blanking field are discussed. Focusing cam and a small modulus gear shown in Figure 1, Figure 2. Focusing cam 44-17 The main part of the camera. Each camera with 4, in great demand (according to the general plant to be 15-20 million per month). Parts shape Archimedes spiral, high precision, with a magnification of 20 times the projector under the projector inspection, the internal shape should be exactly the same with the projection board, the thinnest part of the part is 1.4mm, the vertical cross-sectional requirements and parts Finish? 7 or more. The original part of the process is: falling blank - outside the renovation