![]() ![]() ![]() Using a negative value here does hardly make sense but it would theoretically allow you to see a cut into the edge.īasically you can say that negative values remove material (which you often want on external edges) and positive add material (which is needed on internal edges). The values will state the minimum required curve and the max acceptable. By using positive values you allow a curvature in the bottom of the edge instead of requiering it to be completely sharp. A minimum value would not really make sense. NB: Using a positive value means that its just the max acceptable "burr" size. If you state a positive value on an external edge you basically allow the edge to be sticking out (like a burr) which normally is not accepted as you might cut your fingers on it or it would not fit into whatever it fits into. The curve can obtain all kind of shapes as long as it is in between those two chamfered sizes. Using values -0.2 and -0.4 will mean that the final curve of the edge has to be in between chamfered 0.4 on both sides and 0.2 on both sides. It explains what the drawing symbols are and how they describe these features. Effectively ISO 13715 is a standard that defines various edge conditions like burrs and undercuts. Adding negative values will mean that the corner has to be cut (as if chamfered) with a minimum and maximum of the stated values. Thank you for posting your question on the forum. On external edges you should normally use negative values. Short explanation of using it (I'm using mm as standard): It was great that the idw-symbol was attache din another reply! SO: Thanks for asking for it some time ago. Everybody making machine drawings would need it! ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |