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本帖最后由 ta488 于 2012-11-15 11:59 编辑 : p Q+ f3 N' a9 Q& w4 d( u1 n
' B6 g4 z5 a! x% E转载：http://attao.blog.163.com
: l* A# d" e: bRaster toolpaths are composed from a set of parallel passes with a stepover along a line at a set angle. This machining strategy is most effective on shallow (nearing horizontal) surfaces, or steeper surfaces that are perpendicular to the angle of the passes.- j. C6 M" B5 V
栅格精加工算法，按给定步距、加工角度生成一系列相互平行的路径，这种加工策略非常适用于浅平面加工（接近水平）和陡峭的曲面加工，陡峭处生成的路径垂直于浅平面加工角度。
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`% z; B. K+ _# |6 u7 ~$ q- v, }In the above example, the passes are parallel to the X axis. In the detail on the right, you can see that the passes are evenly spaced. In the detail on the left, where the surface is at an angle to the cutting pass, you can see the consistency of the spacing starts to degrade. In these areas, you can adjust the Machining angle for better results.
# p4 J! @+ `, U/ n% b1 J, {+ N上图例中，路径平行于X轴，在右边的局部放大图中可看到路径间距均匀分布。左边的放大图中，此处曲面和路径存在角度，路径间距逐步变得稀疏，加工这样的区域，调整加工角度（Machinging angle）获取最佳效果。& m$ `8 d( w l: h) _
' T% P) A+ e$ L ]6 X* ORaster toolpaths are similar to Surface Finish Parallel paths, but with Transitions and Linking Parameters that produce smoother and more efficient tool motion. These toolpaths work best on relatively shallow surfaces.
6 t! T/ I: d: T# y' a! s栅格精加工类似于曲面平行精加工（SurfaceFinish Parallet），层与层过渡及进退刀链接有所区别，栅格精加工可平滑过渡且高效，刀路非常适用浅平面加工。4 L, \5 N1 T; R
http://img8.ph.126.net/_N5AM8wPjwHw-fqp6jEIQA==/6598102208074822888.jpg
' g n5 Y& Q- m- y8 t; uSpecific Raster Cut Parameters are shown below. Cutting method is identical to scallop cut method parameters. Stepover is a fixed value. Machining angle is the angle of the toolpaths as viewed from the top tool plane. 2 E6 }7 d/ d. n
切削参数和环绕等距加工（Scallop Cut）一样，固定步距，加工角度指在俯视图中路径的角度。
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Raster Transitions control how the tool moves at the edges of the part, Transitions smooth or straight.
# ^$ l% o1 T8 _& O层与层过渡，圆滑和直线两种
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应用举例
/ ~- s D4 u' d9 F+ Z下图曲面精加工- Z6 e2 }8 J" T5 A: O3 x- P# |
http://img0.ph.126.net/Sw8eG-5SF9qPH7BWeQO9Lw==/6597928485237806360.jpg
& P8 ]4 p8 }: i. Y" i: n b计算结果： http://img2.ph.126.net/XUMymrlvwKRZRCkVH2Yh7g==/6597354540169488002.jpg* s& H0 E& H5 [# X H9 T- y; s& F
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http://img4.ph.126.net/rdBIY2FGg5YJVyJ6i-B38w==/6598165979749230414.jpg8 c8 N+ v: l1 z, _5 W: b
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发表于 2012-11-15 11:54:22
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楼主
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