Timeline for How to find a reference line for " Form Tolerances"?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 12, 2021 at 12:45 | vote | accept | Sam B | ||
| Apr 11, 2021 at 20:45 | comment | added | r13 | @Sam B From the reference line through the hole, you can control the size of the hole and pin, the edge distances (28, 32), and work out the omitted dimension (from the reference line to the left end) if the overall length is provided. | |
| Apr 11, 2021 at 20:35 | comment | added | r13 | @Sam B The simple answer is because you are drawing a 2D diagram The construction and offset tolerance in each direction must be measured to/from a reference plane. If you draw a 3D diagram, then you'll need 3 reference lines to tie the subject in space to eliminate the confusion on where the indicated measurements start. By convention, a measurement always starts from the reference point defined by the reference axes. | |
| Apr 11, 2021 at 19:52 | comment | added | Sam B | Kind of answers, I get it, you mean the two parallel planes should be referred to the centreline, but I don't get it how the other centreline comes into play ? the one that goes through the holes ? Usually we can choose only one reference line, but here you chose 2 ! | |
| Apr 11, 2021 at 19:23 | history | answered | r13 | CC BY-SA 4.0 |