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LazyCam (Beta) / Help with offsetting
« on: November 04, 2011, 04:30:09 PM »
Hi Guys
I am trying to make a plastic pump impeller and the vanes are shown in the attached drawing, i will be cutting 5mm deep in 10mm stock so the shapes are effectively bulges when its finished.I have been trying to create the tool path using offset. I have read the LC manual and watched the videos and have been trying for ages to get a tool path that leaves the bulge( even one at a time doing 5 complete machinings would suffice) all i get are weird shapes that are nothing like the drawn part. The nearest i can get is a complete circle that follows one outer curve but cuts completely through where the other vanes would be. What am i doing wrong? I imported the shapes sample and was able to generate the correct tool path for cutting them as bulges so i think i understand the basics. I have read on this forum that some badly drawn dxf files can cause problems so what i did was draw the vanes in LT2011 using the clipping command so everything should be joined , i then tried filleting every intersection and when that didn,t work i exploded the drawing just for the hell of it , still no joy. Help please!
I am trying to make a plastic pump impeller and the vanes are shown in the attached drawing, i will be cutting 5mm deep in 10mm stock so the shapes are effectively bulges when its finished.I have been trying to create the tool path using offset. I have read the LC manual and watched the videos and have been trying for ages to get a tool path that leaves the bulge( even one at a time doing 5 complete machinings would suffice) all i get are weird shapes that are nothing like the drawn part. The nearest i can get is a complete circle that follows one outer curve but cuts completely through where the other vanes would be. What am i doing wrong? I imported the shapes sample and was able to generate the correct tool path for cutting them as bulges so i think i understand the basics. I have read on this forum that some badly drawn dxf files can cause problems so what i did was draw the vanes in LT2011 using the clipping command so everything should be joined , i then tried filleting every intersection and when that didn,t work i exploded the drawing just for the hell of it , still no joy. Help please!