thread tolerance

[molixx81]

Bye to all,
I wanted to know if it is necessary, in drawings, always specify the tolerances of each single thread.
do not exist general tolerances on this?
For example, tolerances on general linear quotas are indicated with reference to x standard (e.g. in 22768-mh).

is the same for threads or is it not necessary to specify them? .

 

[gerod]

Hello and welcome.
fundamental rule for new: read the regulation and submit! thank you.
Let's make it clear. What do you mean by thread tolerances? dimensional tolerances? shape?
on the drawings you can do what you want:
- You can insert notes, for example.
- you can use general tolerances

Be clearer, thank you.

 

[molixx81]

Hello and welcome.
fundamental rule for new: read the regulation and submit! thank you.
Let's make it clear. What do you mean by thread tolerances? dimensional tolerances? shape?
on the drawings you can do what you want:
- You can insert notes, for example.
- you can use general tolerances

Be clearer, thank you.

hi gerod!, I'm sorry I've known this site for 5 years but I'm only recently enrolled.. I didn't think to introduce myself!

for threads I meant dimensional tolerances, not shape.

here as an office we have never indicated dimensional tolerances on threads (except special cases ). But now, for certification, we have to understand, for control, which swabs-does not pass by threads take. these pads have different tolerances.
but what to take if on the designs there are not represented these tolerances on the threads?

what I mean to understand is: if threads are indicated on the drawings without tolerance ( banally with m5 or m5x0.5 ) they have a standard tolerance or who realizes them can do what they want? ? ?

For example, if I quote a threaded shaft indicating only the m8 thread. when it is realized can be a m8 6g or a m8 5g or a m8 6h or should it comply with a standard tolerance? .

 

[Preparation-H]

hi gerod!, I'm sorry I've known this site for 5 years but I'm only recently enrolled.. I didn't think to introduce myself!

for threads I meant dimensional tolerances, not shape.

here as an office we have never indicated dimensional tolerances on threads (except special cases ). But now, for certification, we have to understand, for control, which swabs-does not pass by threads take. these pads have different tolerances.
but what to take if on the designs there are not represented these tolerances on the threads?

what I mean to understand is: if threads are indicated on the drawings without tolerance ( banally with m5 or m5x0.5 ) they have a standard tolerance or who realizes them can do what they want? ? ?

For example, if I quote a threaded shaft indicating only the m8 thread. when it is realized can be a m8 6g or a m8 5g or a m8 6h or should it comply with a standard tolerance? .

tolerances are standard, in fact try to take a male or a chain in hand and you will see that the tolerance of the same is reported.. .

Hi.
p-h

 

[SHIREN]

Hi.
If I don't
and some time that not "freguent" more certain tolerances
screws are built according to ISO 965-4 with 6az tolerance field
the dice build according to iso 965-5 with field of tolerance 6az

 

[molixx81]

tolerances are standard, in fact try to take a male or a chain in hand and you will see that the tolerance of the same is reported.. .

Hi.
p-h

In fact.. .
we have old control wreaths that are signed for example: ring m6x0.75mb-sh8 .
We will probably throw them away because they respond to old regulations (one 2761 ) and we will take more suitable tools.

in general male or female subsidiaries report tolerances 6g / 6h
But I know that they can be different..( es 6e/ 6g) . for this kiedevo if you had to specify them in the drawing.
We've never had any problems. It's just a question of certification..ke just needs to break!! !
Thanks anyway!

 

[gerod]

if you indicate in the cartilage the class is tolerant that is for all the design except for different directions.
if you need a tolerance on a thread you put it (you may have to narrow the field). you have to tell who reads if you need to specify or not the value (it is obvious that if your degree of tolerance is average and you need a thread "of up" you have to put the thread in tolerance).

hi gerod!, I'm sorry I've known this site for 5 years but I'm only recently enrolled.. I didn't think to introduce myself!

in fact you haven't done it yet! I'm out of sight! !

 

[molixx81]

if you indicate in the cartilage the class is tolerant that is for all the design except for different directions.
if you need a tolerance on a thread you put it (you may have to narrow the field). you have to tell who reads if you need to specify or not the value (it is obvious that if your degree of tolerance is average and you need a thread "of up" you have to put the thread in tolerance).


in fact you haven't done it yet! I'm out of sight! !

Hihihi... where should I do that? ?

 

[gerod]

Of course I do.

the thing is retroactive; Just a little bit. for correctness.

 

[molixx81]

Of course I do.

the thing is retroactive; Just a little bit. for correctness.

:biggrin: kiedevo where I had to do it not if I have to do it!! :tongue:
My name is dario anyway! !
I live in praise zone ( lombardy) and work as a designer for a company that relies on components for industrial automation
(cylinders, valves, frl groups, pneumatic systems, automation varies, special).
I take care of the valve, the company is giving me, recently, the possibility to realize some project. Obviously I work in teams with people with more experience and we are trying to revolutionize the company a bit, since it is "old" and it needs to grow even at a qualitative level!! .
Hopefully, he has all the qualities to do it!!
I have 8 years of experience with autocad over 5 schools (which however have served me a lot though then design is another thing!) and almost 5 years of experience as a designer and designer with solid works.
I'm a simple mechanical expert.
I know autocad from version 12.
solidworks since 2005.
I really like graphic animation. for this use blender learned alone or thanks to other communities but for private applications not for the company. (I am collaborating with a team to create a videogames using, as a 3d modeler, precisely blender ).
I also have some extra jobs with two other companies working in the field of plants for chromiuming and in the design of industrial automatic machines with the aim of teaching solidworks (in return I learn very interesting things!! ).
Well, that's it. :redface:

returning to the threads speech. I therefore realized that, if we want to do something done well, in the cartilage we must also insert here the general tolerances on the thread (as we do with the dimensional tolerances for the linear quotas without indication of tolerance). (although to tell the truth I have seen that almost everyone does not use to specify them, and I also speak of other companies).

 

[gerod]

remarkable presentation!

(as is done with dimensional tolerances for linear quotas without indication of tolerance). (although to tell the truth I have seen that almost everyone does not use to specify them, and I also speak of other companies).

Beautiful: the two brackets with the point in the middle I had never seen them!! :
However, the answer is (yes, it is true, sometimes even the norms are cited)