【转帖】chamfering question

yang686526

chamfering question
hello all,
i will try to describe my problem and if it's a simple fix excuse me for asking. i have a yoke shaped part and i only want to chamfer the radius and not the flat leading up to the radius. i have turned off "tangent propagation" and cannot just chamfer the radius it automatically continues on to the flat. have tried everything to deselect etc. is it possible?
  
solidworks 2008 sp2
windows xp pro, pentium4 3.00ghz
1gb ram, nvidia fx500
logitech marble mouse, spaceexplorer
without seeing the part this might be a duff idea, but my first thoughts were try editing the features and untick "merge result" therefore creating a number of separate bodies.
do your chamfer then "combine" the bodies.
regards
wp
you need two flat surfaces for a chamfer. try a revolved-cut?
chris
solidworks/pdmworks 08 3.1
autocad 06/08
sounds like a loft cut to me.
just out of curiosity, why would you loft a cut that seems like it would be of uniform cross-section and about a constant radius?  i have to agree with chris...revolved cut.
i like the loft cut because if the cord length of the radius changes the loft will rebuild automatically.  you wouldn't need to go back and modify the angle like in a revolve cut.  this only applies to an outside radius not an inside.  personal prefference really.
it would help to see a pic.
chris
solidworks/pdmworks 08 3.1
autocad 06/08
thanks everyone, i'm at home so will try when i get into work in the morning. i think i'm most comfortable with the revolved cut but just for kicks will try the loft. i've never been able to get the image thing to work for me, sometime i'll try again.
thanks again, i love this forum.
dennis
solidworks 2008 sp2
windows xp pro, pentium4 3.00ghz
1gb ram, nvidia fx500
logitech marble mouse, spaceexplorer
create a very narrow cut (0.0001") cut at right angles to and just covering the chamfer so that it doesn't cut the parent body. this will stop it propagating;(see below) i often use this if i need to stop a chamfer or fillet short of its usual end to simulate the run-out of a tool. in this case i make a sketch for a revolved cut on this "stopped end" face.
trevor clarke. (r & d) scientific instruments.somerset. uk
sw2007x64 sp3.0 pentium p4 3.6ghz, 4gb ram ati firegl v7100 driver: 8.323.0.0
sw2007x32 sp4.0 pentium p4 3.6ghz, 2gb ram nvidia quadro fx 500 driver: 6.14.10.7756

sincotc,
that's pretty smart!  cut the edge that is propogating to stop the chamfer...i like it!