Chamfer Edge Line Weight

[djw2k3]

I have always been of the understanding that in an engineering drawings, edges of a component that do not make up the major outline of the component are of a lighter weight. The classic example is a chamfer on the end of a shaft.

Obviously the linewight for the particular line can be changed easily enough, I would like to know anyone elses comments or views on this.

I am not aware of any tool in SW2001+ that does this automatically.

 

[macPT]

djw2k3

I think that what you are saying is not according to drawing standards (for example, ISO Standards). Lightweight lines are for details to help urderstand the drawing in cases of "apparent" geometry; not for the actual geometry. One classical case of apparent geometry that can need these lines to make a drawing clear is when you have tangencies. In this case you can have a part with a lot of up or downs but, in the perpendicular view it's only a rectangle. You need to add detail to make this view more clear. In the case of a chanfer it's real geometry.

But from my experience, there is no company that follows 100% the drawing standards (including mine). They allways find ways to do somethings more simple or more suitable to they knolege or process (design and/or manufacturing process). And if what you are telling is suitable to your company, I will not tell you that you are wrong. Only 2 advices: 1 - create internal standards so it will be clear for all of you, in the company, the rules to draw and to read a drawing; 2 - be carefull with 3rd parties, when you share drawings.

For example, I have seen drawings with no chamfer at all. Just a note in the corner, with the chamfer dimensions. Which one do you think it's more clear to the reader?

Regards

 

[djw2k3]

hi mac,

For the same reasons we don't strictly adhere to standards ;-) , I have been working on a drawing of a part with lots of chamfered edges and found it looked a lot better wheb I lightened the lines for clarity etc. No biggy, just getting others views.

Thanks djw