Mannyroad Posted September 21, 2017 Share Posted September 21, 2017 Hi, I'm new to the forum and am hoping someone can direct me to a solution for something that is baffling me. I have an assembly containing two parts, one a rectangular sectioned arm with two extruded circular bosses off one face, 12.5mm dia at 80mm centres. I am trying to mate this part to a plate, which has two 12.5mm dia holes at 80mm centres also. The arm is a new part for my motorcycle and the rectangular plate is just a representation of the geometry of the mounting poins on the bike. I can use the Insert mate, to mate one boss into one hole, which works fine, allowing a rotational degree of freedom to remain. however, when i try to insert the other boss into the remaining hole Inventor identifies a relationship error. I've tried creating work axis for each boss and hole and attempted to simply mate the axis' but still it won't work. This seems an unlikely problem that i can't seem to fathom out. See below. Any help greatly appreciated. Quote Link to comment Share on other sites More sharing options...
lrm Posted September 25, 2017 Share Posted September 25, 2017 Hi,... allowing a rotational degree of freedom to remain. Your assembly has one degree of freedom as you point out. You need to add a constraint that removes only one degree of freedom. An additional Insert constraint is too restrictive as it removes 5 DoF. Try adding an angle constraint between a reference line passing through the centers of the two bosses (or the edge of the arm) and a reference line between the two holes. Quote Link to comment Share on other sites More sharing options...
gazza_au Posted September 27, 2017 Share Posted September 27, 2017 Upload the parts and we can check them out. Quote Link to comment Share on other sites More sharing options...
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