conical

[Damiano_-_-_]

Hello everyone, I need help.
I'm teaching about conocity, which I can't understand. I have attached an exercise, where should I find, for example in exercise 1, the diameter d. someone would be so kind to help me understand? thanks in advance

 

[Damiano_-_-_]

I accidentally uploaded several times to the same image, sorry

 

[MassiVonWeizen]

I accidentally uploaded several times to the same image, sorry

you have a good time at 15 minutes to edit posts, so you have time to correct it.
other small clarifications:
- attach images without requiring users to do contorsionisms to read
-The exercises must be carried out by students, the forum corrects; the solution of the exercises must be accompanied by explanation of reasoning to achieve the result, only so can there be a possible error and consequently to make a useful and profitable discussion for all

your exercise is relatively simple, of course not for you otherwise you would not have shocked help, but if you ask us carefully and search on the net or in your books and notes what it means 1:20 you can understand the reasoning to do

 

[gerod]

@massivonweizen You anticipated me. I removed the extra attachments.
Hi.

 

[MassiVonWeizen]

However, since you work as a designer, the best thing to do is to admit that certain things do not know and with humility to ask your colleagues to explain things to you, because there is no better idea than having a contact person who explains you with practical examples and if you don't understand it is already ready to answer you with other examples; the form cannot replace the direct experience.

 

[Damiano_-_-_]

However, since you work as a designer, the best thing to do is to admit that certain things do not know and with humility to ask your colleagues to explain things to you, because there is no better idea than having a contact person who explains you with practical examples and if you don't understand it is already ready to answer you with other examples; the form cannot replace the direct experience.

But excuse me, but why should you behave like this? I asked for help to understand the reasoning to do, evidently if I ask here is because I have already searched on youtube and what else but I couldn't understand it. Why instead of responding like that, doesn't it help me find the answer in case you know it, instead of telling me things I don't need anything?

 

[Vittorio]

1:20 means that the 2 diameters (d and d) differentiate 1mm measured on a distance of 20mm
I think you can solve your task now

 

[meccanicamg]

Is exercise taken by a drawing book? If so, you should study the theory in the appropriate pages.

What does conicity 1:20 mean?

when you know that you will know the missing diameter.

right for....one person has to learn to read the book and look for....think that wikipedia knows

 

[gerod]

_ behavior is correct. the philosophy of the forum is to help but you have to put some effort on it... for example, you had to say what you don't understand. Thank you.

 

[meccanicamg]

Now that we have written how much the diameter is worth?

 

[MassiVonWeizen]

But excuse me, but why should you behave like this? I asked for help to understand the reasoning to do, evidently if I ask here is because I have already searched on youtube and what else but I couldn't understand it. Why instead of responding like that, doesn't it help me find the answer in case you know it, instead of telling me things I don't need anything?

because giving you the answer wouldn't help you. I helped you find the method of reasoning that is the same as the other users reported, but maybe you didn't come to the end of my post, I told you:

search on the net or in your books and notes It means 1:20 you can understand the reasoning to do

 

[meccanicamg]

the most serious things are not reading and not knowing how to look.
on your book says... .What do you say?
in our times when there was no forum and internet we beat our heads hard several times, we read from books and manuals.... and then maybe we also took a tour in the workshop.... because to the lathe with the comparison and the smell of the mobile top.....any cone we did it in high school.

when I say it is an interdisciplinary course and you can not learn in an intensive course without basics.

 

[Damiano_-_-_]

1:20 means that the 2 diameters (d and d) differentiate 1mm measured on a distance of 20mm
I think you can fix it now

Now that we have written how much the diameter is worth?

to what I understood if l is 81 and 18 I have to do 18÷81 doing 0.2. So the difference between d and d is 0.2, right?

 

[Damiano_-_-_]

the most serious things are not reading and not knowing how to look.
on your book says... .View attachment 68356What do you say?
in our times when there was no forum and internet we beat our heads hard several times, we read from books and manuals.... and then maybe we also took a tour in the workshop.... because to the lathe with the comparison and the smell of the mobile top.....any cone we did it in high school.

when I say it is an interdisciplinary course and you can not learn in an intensive course without basics.

But she's right, though, reading it, I'm afraid I don't understand it, and I've preferred to ask here, since I have no other way of making any doubts.

 

[MassiVonWeizen]

to what I understood if l is 81 and 18 I have to do 18÷81 doing 0.2. So the difference between d and d is 0.2, right?

No, Sbagliato. @vittori wrote that 1:20 means that every 20mm you have a diameter difference of 1 millimeter.

 

[Damiano_-_-_]

No, Sbagliato. @vittori wrote that 1:20 means that every 20mm you have a diameter difference of 1 millimeter.

So the difference is 4mm right? 14?

 

[meccanicamg]

conical writing [math]1:20=\frac{1}{20}[/math]so since the formula is this:then writes:[imath]\frac{1}{20}=\frac{d-d}{l}=\frac{d-18}{81}[/imath]and you calculate the reverse formula:[math]\frac{1}{20}=\frac{d}{l}-\frac{d}{l} -->\frac{1•l}{20}+\frac{d•l}{l}=\frac{d•l}{l}=[/math]simple and get:[math]\frac{l}{20}+d=d=22.05[/math]

 

[MassiVonWeizen]

conical writing [math]1:20=\frac{1}{20}[/math]then writes:[imath]\frac{1}{20}=\frac{d-d}{l}=\frac{d-18}{81}[/imath]and you calculate the reverse formula:[math]\frac{1}{20}=\frac{d}{l}-\frac{d}{l} -->\frac{1•l}{20}+\frac{d•l}{l}=\frac{d•l}{l}=[/math]simple and get:[math]\frac{l}{20}+d=d=22.05[/math]

and here is the solution obtained by exhaustion. . .

 

[MassiVonWeizen]

So the difference is 4mm right? 14?

but how does the resulting diameter be smaller than the starting one if even in the image is represented larger? the value of d (liter minuscule) you already know it, you have to search d (major manuscript)

 

[meccanicamg]

but how does the resulting diameter be smaller than the starting one if even in the image is represented larger? the value of d (liter minuscule) you already know it, you have to search d (major manuscript)

Surely it is confused but if you lose in a simple thing so let's figure out if you have to dimensional a bending pin.

I want to be boring and repetitive.
It's not a job you learn today for tomorrow. We're not all the same, and we don't all have to go do the same job. the important thing is to understand it.