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Why are tunnel boring machines not using cone-shaped drills?
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The surface area of the head of a tunnel boring machine is usually flat. A cone-shaped head would increase the surface area. The question is if it could speed up the boring process.
I know that with current machines the boring process is also limited by other factors. But that is not part of the question.
tunnels
asked 4 hours ago
user248486
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up vote
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down vote
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The surface area of the head of a tunnel boring machine is usually flat. A cone-shaped head would increase the surface area. The question is if it could speed up the boring process.
I know that with current machines the boring process is also limited by other factors. But that is not part of the question.
tunnels
asked 4 hours ago
user248486
111
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user248486 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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The forward force which pushes the drill bit into rocks would be concentrated however that is not the case for flat surface cutter, and how do you smooth the the tunnel walls after boring ? you need again a flat smoother. That's what i suggest not necessarily the real reason behind the design.
– Sam Farjamirad
4 hours ago
add a comment |Â
up vote
2
down vote
favorite
up vote
2
down vote
favorite
The surface area of the head of a tunnel boring machine is usually flat. A cone-shaped head would increase the surface area. The question is if it could speed up the boring process.
I know that with current machines the boring process is also limited by other factors. But that is not part of the question.
tunnels
asked 4 hours ago
user248486
111
New contributor
user248486 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
The surface area of the head of a tunnel boring machine is usually flat. A cone-shaped head would increase the surface area. The question is if it could speed up the boring process.
I know that with current machines the boring process is also limited by other factors. But that is not part of the question.
tunnels
tunnels
asked 4 hours ago
user248486
111
New contributor
user248486 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
user248486
111
New contributor
user248486 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
user248486
111
New contributor
user248486 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
user248486
111
asked 4 hours ago
user248486
111
111
New contributor
user248486 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
user248486 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
user248486 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
The forward force which pushes the drill bit into rocks would be concentrated however that is not the case for flat surface cutter, and how do you smooth the the tunnel walls after boring ? you need again a flat smoother. That's what i suggest not necessarily the real reason behind the design.
– Sam Farjamirad
4 hours ago
add a comment |Â
The forward force which pushes the drill bit into rocks would be concentrated however that is not the case for flat surface cutter, and how do you smooth the the tunnel walls after boring ? you need again a flat smoother. That's what i suggest not necessarily the real reason behind the design.
– Sam Farjamirad
4 hours ago
The forward force which pushes the drill bit into rocks would be concentrated however that is not the case for flat surface cutter, and how do you smooth the the tunnel walls after boring ? you need again a flat smoother. That's what i suggest not necessarily the real reason behind the design.
– Sam Farjamirad
4 hours ago
The forward force which pushes the drill bit into rocks would be concentrated however that is not the case for flat surface cutter, and how do you smooth the the tunnel walls after boring ? you need again a flat smoother. That's what i suggest not necessarily the real reason behind the design.
– Sam Farjamirad
4 hours ago
add a comment |Â
1 Answer
1
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up vote
2
down vote
Because with a flat head the waste material can be (relatively easily) collected and removed from the cutting face.
With a cone-shaped bit that removal is not so easily accomplished.
Cone-shaped bits tend to be used to push or compress the material out of the way, which is fine for "softer" materials ...
answered 3 hours ago
Solar Mike
4,6391613
3
another aspect of flat plate boring heads is that the cutting tools can be replaced from the non-cutting side. That would be nearly impossible with a cone head (from France).
– fred_dot_u
2 hours ago
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
Because with a flat head the waste material can be (relatively easily) collected and removed from the cutting face.
With a cone-shaped bit that removal is not so easily accomplished.
Cone-shaped bits tend to be used to push or compress the material out of the way, which is fine for "softer" materials ...
answered 3 hours ago
Solar Mike
4,6391613
3
another aspect of flat plate boring heads is that the cutting tools can be replaced from the non-cutting side. That would be nearly impossible with a cone head (from France).
– fred_dot_u
2 hours ago
add a comment |Â
up vote
2
down vote
Because with a flat head the waste material can be (relatively easily) collected and removed from the cutting face.
With a cone-shaped bit that removal is not so easily accomplished.
Cone-shaped bits tend to be used to push or compress the material out of the way, which is fine for "softer" materials ...
answered 3 hours ago
Solar Mike
4,6391613
3
another aspect of flat plate boring heads is that the cutting tools can be replaced from the non-cutting side. That would be nearly impossible with a cone head (from France).
– fred_dot_u
2 hours ago
add a comment |Â
up vote
2
down vote
up vote
2
down vote
Because with a flat head the waste material can be (relatively easily) collected and removed from the cutting face.
With a cone-shaped bit that removal is not so easily accomplished.
Cone-shaped bits tend to be used to push or compress the material out of the way, which is fine for "softer" materials ...
answered 3 hours ago
Solar Mike
4,6391613
Because with a flat head the waste material can be (relatively easily) collected and removed from the cutting face.
With a cone-shaped bit that removal is not so easily accomplished.
Cone-shaped bits tend to be used to push or compress the material out of the way, which is fine for "softer" materials ...
answered 3 hours ago
Solar Mike
4,6391613
answered 3 hours ago
Solar Mike
4,6391613
answered 3 hours ago
Solar Mike
4,6391613
answered 3 hours ago
Solar Mike
4,6391613
4,6391613
3
another aspect of flat plate boring heads is that the cutting tools can be replaced from the non-cutting side. That would be nearly impossible with a cone head (from France).
– fred_dot_u
2 hours ago
add a comment |Â
3
another aspect of flat plate boring heads is that the cutting tools can be replaced from the non-cutting side. That would be nearly impossible with a cone head (from France).
– fred_dot_u
2 hours ago
3
3
another aspect of flat plate boring heads is that the cutting tools can be replaced from the non-cutting side. That would be nearly impossible with a cone head (from France).
– fred_dot_u
2 hours ago
another aspect of flat plate boring heads is that the cutting tools can be replaced from the non-cutting side. That would be nearly impossible with a cone head (from France).
– fred_dot_u
2 hours ago
add a comment |Â
user248486 is a new contributor. Be nice, and check out our Code of Conduct.
user248486 is a new contributor. Be nice, and check out our Code of Conduct.
user248486 is a new contributor. Be nice, and check out our Code of Conduct.
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The forward force which pushes the drill bit into rocks would be concentrated however that is not the case for flat surface cutter, and how do you smooth the the tunnel walls after boring ? you need again a flat smoother. That's what i suggest not necessarily the real reason behind the design.
– Sam Farjamirad
4 hours ago