2d mechanical bookcase information

[Massimob81]

Good morning.
I have a question I am a novice designer 2d. When should I insert for example a picture profile or an ipe, in short, normal things should I draw them from scratch or is a library necessary? the same thing to insert threaded holes, if I have a m10 each time I have to draw the hole and thread or there is a way to insert them? thanks to all and excuse the banality of the question

 

[MassiVonWeizen]

if you don't find bookcases already made you draw everything on a file and save it. when you need the m10 thread open that file, select it and cover it in the new design.
this concept applies to all that is used repeatedly: arrows of sections, texts, symbols, etc.
wanting you can save the file containing all this as a template to use to create new designs, so you already have everything under hand; it will be important in the end to erase all that you did not use and do a cleaning for mon to unnecessarily weight the file

 

[Massimob81]

Thank you very much for the answer. I raise a request if any of you are so courteous to share mechanical libraries. for the wheels dentate same thing? Thank you very much

 

[MassiVonWeizen]

for the wheels dentate same thing?

considering that dense wheels have many variables hardly there will be shared libraries.
there are low cost or free software that create them automatically.

 

[Massimob81]

Can you tell me someone good? Thank you very much

 

[meccanicamg]

with a short google search there are libraries of various kinds to be able to download. Also on traceparts and on the sites of the builders there are dwg to download. If you want and patience you can find so much free stuff online.

 

[gianniturbina]

considering that dense wheels have many variables hardly there will be shared libraries.
there are low cost or free software that create them automatically.

I connect to the subject; I remember that you could generate the various modules of wheels dentate by table excel linked to the variables; Did someone do that? was posted on the forum some examples I could use as a base?

 

[meccanicamg]

I connect to the subject; I remember that you could generate the various modules of wheels dentate by table excel linked to the variables; Did someone do that? was posted on the forum some examples I could use as a base?

I honestly don't think anyone did it between us.
your question is not very clear because if you are talking about generating the parameters defined by norm (module, tooth number, primitive diameter/head/background/ingraging, profile shift etc.) surely you do.
but go to draw levolvent not.
I use freecad with workbench fcgear and I make gears in 3d. you can see in phaiton as they planned the module ....
then there are various sites that for free provide the tooth profile, including khk gear calculator which I find particularly useful also to see enlargement in 2d.

 

[prismacad]

years ago I made this video that explains how to design dense wheels with evolving profile with autocad. see if it can be useful.

 

[gianniturbina]

hello prisma, thank you very much; I actually meant the creation of the evolver using a excel sheet; the manual construction is clear to me; I would have been able to automate it, but I've already handed over the job by making a way... good compromise time/result; thank you again!