correct representation of the section of an inspection pipe dn 70.

[Kyros]

Hello to all, for those who did not read my presentation, my name is domenic and I am an industrial engineering student who must take the industrial technical drawing exam.
I write to you today because I have found difficulties in the representation of the particular n°1 of the inspection tube dn 70 (you can see the attached photo) specifically, I have carried out two different semisections of the same detail (I am also attached) but I cannot understand which of the two (at least I hope it is one) is correct for this, not succeeding to get out, I thought to ask for your opinion.
logically I realize the commitments that each one of you has therefore, I thank you in advance for any help you can give me and apologize in case you had wrong section of the forum or had been unprecise.

 

[meccanicamg]

different things...
1) there are no thicknesses but diameters
2) you did not quote threads
3) the two drawings are different as internal rays....it seems to me to be the right one
4) Missing odds and badly positioned
5) Not even the arrowheads of the quotas are in norm...they must not be triangulate equilateral but long isosceles and rods
6) missing edges in sight

 

[Kyros]

hello, first of all thank you for having responded so fast and for showing me errors. However, I am still at the beginning and I ask you a little patience for my questions and some extra clarification therefore, firstly: the most correct design between the two is the one indicated as:" try number 1"? (i.e., where I indicated the diameter)

 

[meccanicamg]

basic yes. but are you sure that the fusion of body number 1 is all cylindrical? I think you can't stick the cylindrical glass if the melt has larger head hats and the outer shells can't fit.
There is reason to think about it a little because it is not as trivial as it seems.

 

[meccanicamg]

... according to rule...dn70 means that the tube is 70mm and not 24. also evaluates this

 

[Kyros]

hi, I understood your reflection but unfortunately I cannot answer you because I was not given any further information on this piece (and my professor does not correct in session of examinations), if not that the inspection glass disc is 70 mm and all the other sizes must be found by measuring the various "lates" of the object on the section that has been provided to us. However, I have corrected (since I have understood correctly) the errors that you politely described to me however, I still ask you one last help i.e., to view the overall design of this object and that of the particular z (in attachment to this last message) and to tell me, if you can, how it should be the sampling of the overall and whether the designation of the particular is correct or not.
Thank you for your indispensable help.

 

[meccanicamg]

threaded holes must have threaded line throughout the male tract.
the detail z lacks lines closing edge circle as in the overall.
in total the seals between glass/soul and glass/coperchio are missing.

My reflection is simple: if the glass is cylindrical you will never put it on a particular that has two non-removable flanges larger than its inner diameter. ergo is not cylindrical the glass or the axieme is wrong...which is not surprising to me since the teachers are not all accurate and attentive.
However I saw that you did it as a big t and you have circular glass lids and also the lid is threaded. But you have to finish the thread lines.
The axes are missing.