how to specify honing (on a print) for a hydraulic cylinder??

[svt1234]

I am reverse engineering a hydraulic cylinder, I believe there is more to just slapping on a number for a surface finish, does anyone have any experience in this area? I believe there must be a standard out there that covers this.

 

[sandip4ug]

Probably we can take help of extensions lines, please refer ASME Y14.5-2009 page no 11 Fig 1-13 , by this way we can provide process as well as its roughness value on drawings,
For roughness value refer ASME B46.1-2002 Page no 68 Fig B1

 

[ctopher]

Some good references:
Link
Link
Link

Chris, CSWA
SolidWorks '15
SolidWorks Legion

 

[CheckerHater]

While not forbidden, it is advised against specifying processes in Y14.5 ("...without specifying manufacturing methods").

ewh, why wouldn't you provide larger, extensive quote from Y14.5?

From Para. 1.4 FUNDAMENTAL RULES:
“(e) The drawing SHOULD define a part without specifying manufacturing methods. … However, in those instances where manufacturing, processing, quality assurance or environmental information is essential to the definition of the engineering requirements, it SHALL be specified on the drawing or in a document referenced on the drawing.”

"For every expert there is an equal and opposite expert"
Arthur C. Clarke Profiles of the future

 

[desertfox]

Hi

Why can you not just call out the surface finish you want the component to have and let the manufacturing engineer decide how its produced.

“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

 

[JNieman]

Not all manufacturers have a "manufacturing engineer" of some kind on staff. Not all of them will care to do anything more than what's on the print. Not all of them, even if you told them what it is for, would know the advantages in certain surface textures for the application.

_________________________________________
NX8.0, Solidworks 2014, AutoCAD, Enovia V5

 

[ewh]

CheckerHater,

Because (as included in your post) I had quoted more of it earlier, and in the second post I was attempting to include only the part that was relevant to my response regarding method vs process.

For those curious as to the entire fundamental rule (e), it reads "The drawing should define a part without specifying manufacturing methods. Thus, only the diameter of a hole is given without indicating whether it is to be drilled, reamed, punched, or made by any other operation. However, in those instances where manufacturing, processing, quality assurance, or environmental information is essential to the definition of engineering requirements, it shall be specified on the drawing or in a document referenced on the drawing."

"Know the rules well, so you can break them effectively."
-Dalai Lama XIV

 

[desertfox]

Hi JNieman

If I came across a manufacturer as bad as you describe and who could not understand surface textures on a drawing,then we would only do business once if at all.

“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein