university project

[Reynolds vs. Grashof]

I see that you share what we are thinking of our professor who has assigned us an indispensable job, that we had intuited was made with cnc machines, and that instead we are forced to adapt to the use to traditional machines given the few skills that we have been provided and only on processing of turning, milling and drilling.
Since we are required, in writing the final report of this project, to provide all the parameters of the processing we perform and since those manuals from what you say do not have standard working parameters obtained through formulas but only related to the skill and experience of the operator, we are ahead of a crossroads:
1-eliminating all concavity processing, however, leaving the milling of the inner part of the feet (where the coupling with the impeller occurs) and the central foil that being straight profiles can be studied with the method taught (ah I forgot the holes)
2-leave concavity processing by narrowing it to a single grinding and polishing done manually without being able to assign any parameter and justifying this choice based on the experience you provide

 

[marcof]

I see that you share what we are thinking of our professor who has assigned us an indispensable job, that we had intuited was made with cnc machines, and that instead we are forced to adapt to the use to traditional machines given the few skills that we have been provided and only on processing of turning, milling and drilling.

with the only traditional machines that shovel, ready to colegare to the impeller, is not done! point! you should tell your porfessor when you ask him to change or review the exercise.
It is incredible that some people are fragrantly paid to form future professionals (I imagine engineers in your case...) demonstrating that they are completely dissociated by the productive reality they are pontificating. but where they live.. .

 

[Reynolds vs. Grashof]

We share in full what you say; Unfortunately, however, the assigned work cannot be modified and therefore we must realize is blessed.
in the light of this data for hire that the shovel has been made for foundry with model to lose in polystyrene that advises us regarding the processing:
1-eliminate all concavity processing, however, leaving the milling of the inner part of the feet (where the coupling with the impeller occurs) and the central foil that being straight profiles can be studied with the method taught and the relative formulas (ah I forgot the holes)
2-leave concavity processing by restricting it to a single grinding and polishing carried out manually without being able to assign any parameter and justifying this choice on the basis of the experience provided by you that certainly better than that of a university professor

 

[SHIREN]

assign any parameter and justify this choice based on the experience you provide that certainly better than that of a university professor

Hi.
you can't say that
this and an exercise to "stuzzicarvi" to make you grow to give you so ask
is a questionable way or system
tell the prof your perplexity
Your points? ? ?
Then we'll see

We share in full what you say; Unfortunately, however, the assigned work cannot be modified and therefore we must realize is blessed.
in the light of this data for hire that the shovel has been made for foundry with model to lose in polystyrene that advises us regarding the processing:
1-eliminate all concavity processing, however, leaving the milling of the inner part of the feet (where the coupling with the impeller occurs) and the central foil that being straight profiles can be studied with the method taught and the relative formulas (ah I forgot the holes)
2-leave concavity processing by restricting it to a single grinding and polishing carried out manually without being able to assign any parameter and justifying this choice on the basis of the experience provided by you that certainly better than that of a university professor

attention with polystyrene models
are too delicate
tolerance on crude areas and too "larga"
Moreover 4 models of polystyrene are worth in money more or less 1 wooden model
Thank you very much

 

[Reynolds vs. Grashof]

with regard to the construction in the foundry we had initially chosen to make a wooden model with the opposite palettes in order to have with two sun poured 4 united palettes that then we would have dissected and milled from the full (all this to save on the castings); but the inconvenience is the use of the cnc. we then went to school a single full shovel but also here the cnc stopped us. then we decided to create concavities for foundry, but a model that foresees such concavities, since we had not foreseen to realize them through a soul but only through the land of foundry, can not be extracted if not removing the land that was added to realize the basins. to avoid merging completely the head then we had opted for the polycast that seems to us the simplest even if perhaps more expensive; we know that the surfaces will have tolerances and finishes "width" but so much the most important areas will be worked at the mu while the rest leaves it rough.
We take the opportunity to thank you again since we have been a great hand and as usual we are open to suggestions.
Thank you very much

 

[MassiVonWeizen]

Why not use a flatter called shell? I speak as ignorant for the production process, the costs and the feasibility of the system, but when I worked as a turning pointer and at first just as a sinker in the foundry was a system used (in those cases it was hundreds/mills of pieces)
I attach an image for what I mean and leave the word to the most experienced.
View attachment 36952

 

[Reynolds vs. Grashof]

the idea of the shell had been taken into consideration since it would solve a lot the problems of roughness and tolerances saving on subsequent processing to the mu, but we know that a shell riots on the wide production and we have to do only 4 palettes then we have rejected it

 

[SHIREN]

with regard to the construction in the foundry we had initially chosen to make a wooden model with the opposite palettes in order to have with two sun poured 4 united palettes that then we would have dissected and milled from the full (all this to save on the castings); but the inconvenience is the use of the cnc. we then went to school a single full shovel but also here the cnc stopped us. then we decided to create concavities for foundry, but a model that foresees such concavities, since we had not foreseen to realize them through a soul but only through the land of foundry, can not be extracted if not removing the land that was added to realize the basins. to avoid merging completely the head then we had opted for the polycast that seems to us the simplest even if perhaps more expensive; we know that the surfaces will have tolerances and finishes "width" but so much the most important areas will be worked at the mu while the rest leaves it rough.
We take the opportunity to thank you again since we have been a great hand and as usual we are open to suggestions.
Thank you very much

this
If I have understood well (aime is approaching the senile age):
Should you build the model in your atheist??? ? ? ? ? ? ? ? ?
and you have no chance to use a cn
in the affirmative case
I ask you if you have the opportunity to use or if there is a carpentry workshop
with some wood machine
if it is possible with a "step pass"
we solve the prob in a couple of days
we make an online model:finger:
Thank you very much

 

[SHIREN]

Why not use a flatter called shell? I speak as ignorant for the production process, the costs and the feasibility of the system, but when I worked as a turning pointer and at first just as a sinker in the foundry was a system used (in those cases it was hundreds/mills of pieces)
I attach an image for what I mean and leave the word to the most experienced.
View attachment 36952

Hello Masses... .
could also be a lost wax process
or with aluminium moulds to create a pocellaneous cluster
and better a wooden model
if the boys confirm that they have the opportunity to use a carpentry workshop
we create a working group
and solve the prob
as already in the past
"our projects"
Thank you very much

 

[Reynolds vs. Grashof]

is a project that has been assigned to us and which is part of the evaluation of the mechanical technology examination; the blade will never be realized but we must design, as if it were to be realized in reality, the following phases:
1-source
2- removal of chip
3-printing
of the foundry part we have subfolders: -Calculation of overmetals-angles of junction-choice of the plan of sepraction-dimensioning of the materozze-verify directional solidification-size the system of casting-staffe and earth

and of this part given the difficulty of creating concavities with a wooden model, because any separation plan we chose gave us problems during the extraction during the forming, we had opted for a polycast that solved problems of selection of the sepraction plan, sform angles, extraction of the model; We could use less high brackets (also wanting only one) with savings on the earth in order to compensate in part the cost of the 4 models in polystyrene that we know to be greater than one in wood.
Could it be a right choice?

of the part of removal of truciole instead we have to depending on the operation to make describe the steps followed: -choice of tool-tempi-forze and cutting power-tech parameters

not having to disposition the appropriate knowledge on cn, we had also thought helped by your previous rests of:
1-fresh the overmetal of the blade's feet with a standard cutter and then practice the 4 holes and alesail them to ensure the right tolerance and a proper coupling with the impeller
2-fresh the supermetal of the central foil being straight and then polish it
3- Grind and polish the concavities; as you tell us it is to be done by hand and therefore it would be the only operation that would not have formulas and parameters but on the other hand without a cn would be impossible to realize with a standard machine given the complexity of the concave profile
Could it be a right sequence?

molding will probably be the final but for the moment we are still at the first two points.

We thank you very much again for the great help you are giving us. Thank you very much

 

[MassiVonWeizen]

I have doubts about the fact that they really have to build it, I'm more likely to realize theoretical... but university 2nds" people!
That solution, although I seem unsuitable, I suggested that maybe the boys had escaped. in the matter of foundry I am rather ignorant about the processes while having worked with people who never let me explain, but I was young and stupid.
She thinks it was my work experience and I made the calluses and finished my nails for months licking and deburring terminals for the railways and there was a worker with marquis and goggles on the tip of the nose that with the pneumatic grinder passed the shells for hours.

I remain doubtful about the treatment I had hypothesized: I think it is not pure, but with various residues, it is not used to make a treatment that extends its duration.

 

[SHIREN]

is a project that has been assigned to us and which is part of the evaluation of the mechanical technology examination; the blade will never be realized but we must design, as if it were to be realized in reality, the following phases:
1-source
2- removal of chip
3-printing
of the foundry part we have subfolders: -Calculation of overmetals-angles of junction-choice of the plan of sepraction-dimensioning of the materozze-verify directional solidification-size the system of casting-staffe and earth

and of this part given the difficulty of creating concavities with a wooden model, because any separation plan we chose gave us problems during the extraction during the forming, we had opted for a polycast that solved problems of selection of the sepraction plan, sform angles, extraction of the model; We could use less high brackets (also wanting only one) with savings on the earth in order to compensate in part the cost of the 4 models in polystyrene that we know to be greater than one in wood.
Could it be a right choice?

of the part of removal of truciole instead we have to depending on the operation to make describe the steps followed: -choice of tool-tempi-forze and cutting power-tech parameters

not having to disposition the appropriate knowledge on cn, we had also thought helped by your previous rests of:
1-fresh the overmetal of the blade's feet with a standard cutter and then practice the 4 holes and alesail them to ensure the right tolerance and a proper coupling with the impeller
2-fresh the supermetal of the central foil being straight and then polish it
3- Grind and polish the concavities; as you tell us it is to be done by hand and therefore it would be the only operation that would not have formulas and parameters but on the other hand without a cn would be impossible to realize with a standard machine given the complexity of the concave profile
Could it be a right sequence?

molding will probably be the final but for the moment we are still at the first two points.

We thank you very much again for the great help you are giving us. Thank you very much

Hi.
you can "close" the two sunshades on the final part of the knife
the extracts easily of milling machine
but only to make the situation easier
the model has no prob of extraction with the sunshades it makes a fake flow in case you do not want to close them
to point 1 and everything ok
the point 2 is questionable if there are no probes of fusion too should be frosted and polished then you can also choose to fresare no prob
Step 3 is okay
the rest we face it from time to time
Thank you very much

 

[Reynolds vs. Grashof]

what do you mean by sunshades on the final part of the knife or for fake flow?


thank you very much for the time you dedicate

 

[SHIREN]

what do you mean by sunshades on the final part of the knife or for fake flow?


thank you very much for the time you dedicate

Hi.
in the opposite side of the fixing poles
at the end of the spoon
the knife has two openings
I called the sun
maybe and best you get them from removal chip with a normal milling machine

in case you would like to make them from fusion
That area to be thirsty. in practice to promote extraction
we must build a false soul
but without building the soul case
and only a superfice that closes the subsquadri
which should be eliminated when the operator turns the lower bracket to shuffle the upper bracket
is easier to do than to describe
Thank you very much

 

[Reynolds vs. Grashof]

we do not understand how you would like to achieve this foundry process; How should the model be placed inside the bracket? vertical or horizontal? What separation plan should be chosen? How should concavities be realized? When you talk about false soul scope you mean a dowel that closes the subsquadri and takes off to complete casting?
These questions do not want to be a way to have all the answers from you but to better understand how you would like to proceed and compare what solutions to take.
Thank you very much

 

[SHIREN]

we do not understand how you would like to achieve this foundry process; How should the model be placed inside the bracket? vertical or horizontal? What separation plan should be chosen?
Thank you very much

Hi.
I attached a manual sketch
That's the plan guy.
could be questionable if you reverse the upper bracket with the lower one

How should concavities be realized?
Thank you very much

construction of a wooden model in nature which means as you see the design so it must be the model with sform general retreat
overmetal processing
for the withdrawal it would be good to consider an external 2% (on the shells) and an internal 1.8% (in the concavities)

When you talk about false soul scope you mean a dowel that closes the subsquadri and takes off to complete casting?

Thank you very much

false flow rate is a removable tile that must be inserted when shaping the upper bracket
and should be removed when shaking the lower bracket
creates a compartment in the upper bracket
that must be compensated with the lower bracket
the casting comes after
see the annex

These questions do not want to be a way to have all the answers from you but to better understand how you would like to proceed and compare what solutions to take.
Thank you very much

Come on, guys, it's simple.
I understand that what is being taken for me becomes difficult for those who have never seen a foundry or a fusory process.
with patience we will arrive
Thank you very much

 

[SHIREN]

I have doubts about the fact that they really have to build it, I'm more likely to realize theoretical... but university 2nds" people!
That solution, although I seem unsuitable, I suggested that maybe the boys had escaped. in the matter of foundry I am rather ignorant about the processes while having worked with people who never let me explain, but I was young and stupid.
She thinks it was my work experience and I made the calluses and finished my nails for months licking and deburring terminals for the railways and there was a worker with marquis and goggles on the tip of the nose that with the pneumatic grinder passed the shells for hours.

I remain doubtful about the treatment I had hypothesized: I think it is not pure, but with various residues, it is not used to make a treatment that extends its duration.

Hello Masses... .
I'm sorry if I'm late.
but here we enter the merits of the situation
I have a specific experience with the university world in the sense that over the years I have always collaborated with students and
university compartments for thesis and test
The probes. I always know the same
over the years unfortunately nothing has changed
go ahead to trailer with years old exercises
the world and changed
the world of work and changed
our lives in the daily life
this exercise would need technical assistance of the laboratories that are present in every technical compartment
build that wooden model you know when it would cost??? ? ? ? ? ? ? ? ?
one or two multilayers of plywood in poplar essence exaggerating 200 €zozzi
Do you know how much technical knowledge would be??? ? ? ? ? ? ? ? ?
thousands of eurizozzi
It's a school situation that should have a strong match in all technical collectivity.
also starting from our forum

I answer you for superficial treatment
stainless steel
and made to resist contact with h2o
could be aged artificially but not within the merit (I am not) a metallurgical
I'm sorry, maybe I'm just a minute.
Thank you very much

 

[MassiVonWeizen]

foresight is a dowry that in recent decades has been put under the good carpet of the living room.

danke for explanation.

 

[SHIREN]

foresight is a dowry that in recent decades has been put under the good carpet of the living room.

danke for explanation.

thanks to you

 

[sampom]

...according to my operator experience without a control machine you don't.

ah ah (perdonates hylarity :smile: ). the turbine pelton is patent of 1880; I do not think there were then "control machines"