technical drawing exercises

[MassiVonWeizen]

1)Is the plug hypothesized and correctly represented?

That's not a plug, but the hole in the plug. by turning the 90° section, you would have avoided the break in the upper view.

2)the primitive of a conical wheel in the plant after which circumference should be represented?

just open a manual and see what is listed with øp

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I take the opportunity to ask for a general opinion of the drawing

I have a hard time reading the drawing with almost invisible quotas. But the diameter of the hole I can tell you that it is better to put it in the section along with others so the operator does not have to go looking for it around.
(ii) a 3.2.
you have made only one tooth table, but you have two; one with straight teeth and one conical

 

[TETRASTORE]

just open a manual and see what is listed with øp

the design presented in the link quoted (industrial-ideas) contains a refuso, see attached image: ingr with refuso.jpg.
the correct design is that of the image: Okay.

 

[MassiVonWeizen]

You're right. Sorry.
I don't have it under my hand, but I'm pretty sure it's correct on the baldassini.
nozzles in pdf I linked to post #8 is indicated correctly.

 

[MassiVonWeizen]

dal pdf succitato

 

[gspshep01]

That's not a plug, but the hole in the plug. by turning the 90° section, you would have avoided the break in the upper view.

just open a manual and see what is listed with øp

industrial-ideas.com - industrial ideas Resources and Information.

industrial-ideas.com is your first and best source for all of the information you’re looking for. From general topics to more of what you would expect to find here, industrial-ideas.com has it all. We hope you find what you are searching for!

www.industrial-ideas.com

I have a hard time reading the drawing with almost invisible quotas. But the diameter of the hole I can tell you that it is better to put it in the section along with others so the operator does not have to go looking for it around.
(ii) a 3.2.
you have made only one tooth table, but you have two; one with straight teeth and one conical

I'm sorry, the photo is not the best, however I don't know if we didn't understand each other but I meant or just in the view on the plant where I have to do the line drawn point, if immediately after the circumference of head more external or after the inner one

 

[MassiVonWeizen]

but I meant or just in the view in the plant where I have to make the line drawn point

page 40 of pdf.
Maybe we read the materials that are reported or try to do a search

 

[gspshep01]

page 40 of pdf.
Maybe we read the materials that are reported or try to do a search

thanks and good morning to all but the doubts were born from that pdf, because in the representation of the conical gear the primitive (blue) is before the end of the tooth (yellow)? seeing it from right to left I think I see the yellow line first and after the primitive.

 

[TETRASTORE]

in your case the primitive diameter in the front view revenues by making the projection from the lower sectioned view in which you already have the necessary references.

 

[gspshep01]

in your case the primitive diameter in the front view revenues by making the projection from the lower sectioned view in which you already have the necessary references.

All right, thank you, what confuses me is that seeing from the front continues to seem to me after the end diameter because it seems "hidden" from the head of the tooth, but being an imaginary line makes sense that it is so, I think.

 

[gspshep01]

good evening to all, I wanted to expose you a doubt about how to divide the components together, I want to represent component 5 and I see that in the lower right view is welded with the base, in the component design I have to consider them a component only and also represent the welding?

 

[TETRASTORE]

Do I consider them a single component and also represent welding?

yes, also in the overall is recalled with only one name (5 - cylinder)

 

[meccanicamg]

good evening to all, I wanted to expose you a doubt about how to divide the components together, I want to represent component 5 and I see that in the lower right view is welded with the base, in the component design I have to consider them a component only and also represent the welding?

component 5 is a piece identified with a single code and is built by a fixing base and a welded cube (similar) where the valve chambers are.

 

[gspshep01]

thanks to the answers, I would like to ask a question about this screw reducer, I don't understand what this deduction difference is, is it as if there was a shovel in the toothed wheel for screw, is it exact as reasoning?

 

[PIETRO2002]

thanks to the answers, I would like to ask a question about this screw reducer, I don't understand what this deduction difference is, is it as if there was a shovel in the toothed wheel for screw, is it exact as reasoning?

I don't understand that.

 

[PIETRO2002]

thanks to the answers, I would like to ask a question about this screw reducer, I don't understand what this deduction difference is, is it as if there was a shovel in the toothed wheel for screw, is it exact as reasoning?

you are clearly two pieces, of different material, but you do not understand how to fuck... or, throw them a stupid thing.. they melted the outer material (bronze) on the inner hub! Forgive me if I shot her big

 

[MassiVonWeizen]

so as it is drawn can not be calettata because the tooth could never enter.
in the right view you might think of a forced calettamento(???????) but this is made impossible by the geometry that you see in the left view.
the only thing that comes to my mind at the moment is that it is a crown in two half locked or balancebrased on the hub; being this considered a single piece the division would not be represented in the overall design

 

[MassiVonWeizen]

Question: Are drawings that are giving you a teacher, at school abundantly finished, or are drawings that you are randomly fishing on the net without knowing if they are suitable for the purpose you have set yourself up?

 

[gspshep01]

Question: Are drawings that are giving you a teacher, at school abundantly finished, or are drawings that you are randomly fishing on the net without knowing if they are suitable for the purpose you have set yourself up?

are in mechanical transmission explanation slides

 

[MassiVonWeizen]

are in mechanical transmission explanation slides

therefore they are not meant for the purpose that you are prefixing and that is to extrapolate each element individually.

 

[TETRASTORE]

I don't understand what this difference of restraint is, it's like there's a jacked hub in the toothed wheel for screws, it's exact as reasoning

Yeah, that's right.
In most unfinished industrial screw gearboxes, the crown is not made all in bronze but a centrifuged bronze shell band is reported on a cast iron hub which in its outer diameter has grooves and "dents" to stop the bronze crown and avoid slipping or detaching.
in your design these reliefs are obtained at the center of the cast iron hub, in the drawing that attach are double and alternate; solution adopted by many gear manufacturers.

This solution allows an economic saving because the amount of bronze (more expensive than cast iron) is in reduced quantity and performs the function of antifriction material, unlike the cast iron that in contact with the steel screw could grip.
another advantage is that of the greater resistance of the cast iron hub as it is on it that burdens the task of transmitting the bike to the shaft through tongue.