matteo calzaferri
Guest
Bye to all,
I finally finished all my exams and I can completely devote myself to the development of the thesis.
I'm a student at the University of Brescia and I'm making the thesis for the first degree.
in the first part of the development I did an internship in a company where I reorganized the 2d drawings of a 3-axis working center and drew in 3d the "structural" part of the machine.
I designed:
the base (steel electroplated)
x axis wagon (cast cast iron)
column, z axis (casting of cast iron)
the screw-motor group of each axis
the head (cast of cast iron)
linear guides and recirculation trolleys of rollers.
Now, to get a little deeper into the treatment, I'd like to carry out a verification by focusing on the group "axis z", that is, considering the column, the head, the spindle etc...
The first idea is to focus on the analysis of shifts because I think they have a preponderant role in the analysis of stresses, in an optical maintenance of machining accuracy.
The first question is, can this idea be acceptable?
in the technical data of the machine are indicated maximum loads bearable for each axis.
having no idea how to really proceed in the design phases, I hypothesized a maximum load condition and supposed that during the processing there is an exchange of the maximum loads between piece and tool (8800n per axis x and y and 5500n for the z).
These loads then transferred them, for simplicity, rigidly to the column distributing them evenly on the four trolleys that connect the column to the head.
second question: Can a similar load hypothesis and the transfer of the adopted load go well?
Finally, since the structure of the column is in cast iron and rich in ribs inside how can I schematize it for an analysis using, for example, the principle of virtual works?
I hypothesized an intermediate uniform thickness between the non-black and the nervate structure.
Can you go?
I hope there's someone who can give me a few tips because for now, discussing with the collaborator who follows me for the thesis I didn't find any concrete answers.
Thank you, hello to all
Matteo
I finally finished all my exams and I can completely devote myself to the development of the thesis.
I'm a student at the University of Brescia and I'm making the thesis for the first degree.
in the first part of the development I did an internship in a company where I reorganized the 2d drawings of a 3-axis working center and drew in 3d the "structural" part of the machine.
I designed:
the base (steel electroplated)
x axis wagon (cast cast iron)
column, z axis (casting of cast iron)
the screw-motor group of each axis
the head (cast of cast iron)
linear guides and recirculation trolleys of rollers.
Now, to get a little deeper into the treatment, I'd like to carry out a verification by focusing on the group "axis z", that is, considering the column, the head, the spindle etc...
The first idea is to focus on the analysis of shifts because I think they have a preponderant role in the analysis of stresses, in an optical maintenance of machining accuracy.
The first question is, can this idea be acceptable?
in the technical data of the machine are indicated maximum loads bearable for each axis.
having no idea how to really proceed in the design phases, I hypothesized a maximum load condition and supposed that during the processing there is an exchange of the maximum loads between piece and tool (8800n per axis x and y and 5500n for the z).
These loads then transferred them, for simplicity, rigidly to the column distributing them evenly on the four trolleys that connect the column to the head.
second question: Can a similar load hypothesis and the transfer of the adopted load go well?
Finally, since the structure of the column is in cast iron and rich in ribs inside how can I schematize it for an analysis using, for example, the principle of virtual works?
I hypothesized an intermediate uniform thickness between the non-black and the nervate structure.
Can you go?
I hope there's someone who can give me a few tips because for now, discussing with the collaborator who follows me for the thesis I didn't find any concrete answers.
Thank you, hello to all
Matteo