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照相复制光学分划零件的精度在很大程度上依赖于照相底版的质量,因此制造高质量的照相底版是照相复制光学分划零件的关键。我厂某产品分划零件采用照相复制腐蚀法制作。此分划图形为不等角度相间的九条对数曲线(图1),分度精度要求较高,曲线又十分特殊。如用绘制放大图制版,难以保证曲线的精度和角度误差。若利用数控设备刻图或绘图后进行照相制版虽比较理想,但目前我国这
The accuracy of photogravimetric optical parting depends heavily on the quality of the phototypesetting plate, so making a high quality phototypesetting plate is the key to photogravimetric optical parting. I plant a product division of parts using photographic reproduction corrosion production. The division of graphics for the unequal angle between the nine logarithmic curve (Figure 1), demanding high accuracy, the curve is very special. Such as the use of drawing enlarged plate, it is difficult to ensure the accuracy of the curve and angle error. If the use of numerical control equipment after drawing or drawing photographic platemaking is more ideal, but at present our country