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Title: building inserts Post by: Jerzy Sukow on February 21, 2008, 11:18:09 AM Dear All
I have just registered here. I am from Poland. I am building new inserts now. I just got from US 440C material and start to cut it with jetsystem watercut machine. later I gonna mill it and heat-traten as this material reqiure. 1D CAD `dwg or `doc drawing are awaliable on my mail box. I am looking for CAD `dwg drawing for CNC milling machine (prefered 40-47 centimeters crown for 100 degrees runners for 95kg competitor) If someone has any experience to share - please mail me or post here Regards Jurek Sukow Title: Re: building inserts Post by: Paul Goodwin - US 46 on February 21, 2008, 10:35:29 PM Jurek,
You will find that CNC will not provide enough accuracy to give the correct crown because the curve radius is too large. CNC machines "interpolate" discrete points to approximate a curve, and you will find the crown becomes a series of small steps. If you can't get a CAD profile with crown in it, it is ok to cut the steel flat on the bottom and rough grind the crown by hand before heat treat. Paul Goodwin Title: Re: building inserts Post by: Jerzy Sukow on February 23, 2008, 03:03:17 AM hello
thanks for info. I gonna mill it flat and form the crown,, lead in, out etc. after milling on sharpening machine, then heat treat. New question: can I make plate of 60mm height instead 75? Due to it I can do 4 instead of 3 plates of one piece of material. As I analised drawings, 38 mm down of birch an carbon, 75 mm height of plate is still not between the chock. How do you think about it? Regards Jurek |