What symbol do I use on a drawing to indicate that a roller has been ground, basically what is the symbol for "Surface Ground", this will have been done on a cylindrical grinder if this is any help.
Surface Finish symbol.
Thanks but what detail is it that goes on the symbol to describe surface ground please.
In general - the machining process is not supposed to be specified.
You specify the surface finish required and the manufacturer is supposed to pick the machining process appropriate for obtaining the part specifications.
(the hardness of the material is a consideration as well)
If the drawing is used in-house and you want to use as a process sheet - then you might note the process.
There are many good books (do you have a Machinery's Handbook) and websites that cover the Surface Finish nomenclature.
You should be telling me what surface finish you need - I cannot tell you.
You can add a manufacturing process in the notes section on top of the square root symbol (TURNED, GROUND, MILLED). This is specifically allowed for. It certainly seems to go against a fundamental of drafting, but I can think of situations where you'd want to do it.
Take a look at the attached pdf file & see if it's what you are looking for.
If there is a specfic process that is needed on a part you can put the surface finsh symbol to denote the finish and then add a note to the view/drawing to denote it needs to be surface ground. Most times when I do any shafts I put a note that says "Part to be turned, ground and polished".
Michael I would specify the process like this, hope this helps
Thanks to everyone for the support..
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