indy4x
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Yes, its for straightening brake pipes
- Thread starter BelgiqueB
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indy4x
Forum Supporter
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- 3,254
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- Pontypool, South Wales. UK
PLA, do have PETG but not played with it yet
Screwdriver
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Thought so. That's not how it works. A pipe straightening tool actually distorts and manipulates the pipe before it finally comes out straight. As often as not, this helps work harden soft annealed materials but also, the wiggles and offsets help work out the bends or kinks.
The amount of distortion required is probably right up there with the amount of flex you're going to get with a weak plastic.
I hope you prove me wrong...
indy4x
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3/16" Tube Straightener by njmcpherson
The thru holes in the brackets get tapped to M8 after printing. The bearing wheels may need scaled up 0.5% if they are too tight of a press fit. The Bearings used are 608-2RS bearings (qty 16) and the bolts are M8X20mm Flat head bolts (quantity 16). The small washers go on each side of the...
www.thingiverse.com
daedalusminos
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This particular design does not require the offsets - it's more of a gentle, multi pass tool.
Cheers indy.3/16" Tube Straightener by njmcpherson
The thru holes in the brackets get tapped to M8 after printing. The bearing wheels may need scaled up 0.5% if they are too tight of a press fit. The Bearings used are 608-2RS bearings (qty 16) and the bolts are M8X20mm Flat head bolts (quantity 16). The small washers go on each side of the...
Just a heads up to other posters it's nice and very useful to include the links to things you print or if you design it yourself the STL or original design files (if you are prepared to allow changes etc ).
Big thanks to all those who take the time to post useful items and links.
I wasn't having a dig but like the forum supporter 10er many of us miss the anniversary and are happy to pay. It just takes a minute for a member to post whilst the mods are busy anyway.
But yes it's so easy to forget and a lot more work to refund it on thingiverse when some one asks later.
Screwdriver
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I think you'll find it does...
They will have a subtle offset (this one calls a "spiral") which manipulates the tube, even if it is already straight!
It is a small offset which is why the body needs to be rigid and why I wonder about the efficiency of a plastic version. I'm sure it will be fine on a perfectly coiled, annealed pipe but ideally it would work out any bends or kinks and to do that, it needs to manipulate the material with offsets in the rollers.
daedalusminos
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O
I would think this style work by skewing the roller axis relative to the pipe path. It relies on a good fit of the pipe in the roller - not sure you'll get that with 3D printed rollers.
Screwdriver
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Wherein the plurality of rolling members includes a plurality of rolling groups, each of the rolling groups is disposed between two adjacent ones of the arm portions, and at least two of the plurality of rolling groups are arranged with their pivots of the rolling members transverse to each other; each of the arm portions has one of the protruding wall; respective extents of the protruding walls of two adjacent ones of the at least three shells are equal; a plurality of rolling members which are disposed between two adjacent ones of the arm portions include two first rolling members and a plurality of second rolling members disposed between the two first rolling members, a distance between one of the two first rolling members and one of the second rolling members adjacent thereto is larger than a distance between two adjacent ones of the plurality of second rolling members; each of the at least three shells has a convex portion protruding in a thickness direction thereof and at least one recession disposed on an end thereof which are disposed in the extending direction of the first channel, the plurality of rolling members are disposed on respective convex portions of the at least three shells, and at least one of the plurality of rolling members and one of the recession define a gap therebetween; each of the convex portions near at least one opening of the first channel has an arcuate convex which extends around the extending direction of the pivot of one of the rolling members and is located at one side of one of the rolling members; each of the protruding walls has an outer surface which is wavy; each of the rollers includes a bearing, a ring body sleeved on the bearing and a connecting rod which is penetrated through the bearing and two adjacent ones of the arm portions.
Summed up in one simple sentence...
Probably makes more sense in Chinese, ask Shang-Yuan Huang.
US20200101508A1 - Straightening device - Google Patents
A straightening device including: a plurality of rolling members, defining a first channel which is configured for a tubular member to pass therethrough, an extending direction of the first channel being transverse to at least one extending direction of at least one pivot of at least one of the...
patents.google.com
ok guys lets see how mnay fusion experts we have created now. lol
I have screwdrivers utility knife holder he sorted for me last time but I need to add a slot in it to test a theory. Sadly I cant use sketchup so its back to fusion but I am told that since july the mest conversion is way better.
However sadly it seems to work but not as I expect it..what am I doing wrong.
I upload the stl. select the model and the mesh menu and select change mash. It seems to convert it but not to a solid. still has a lot of facets to it.
I have screwdrivers utility knife holder he sorted for me last time but I need to add a slot in it to test a theory. Sadly I cant use sketchup so its back to fusion but I am told that since july the mest conversion is way better.
However sadly it seems to work but not as I expect it..what am I doing wrong.
I upload the stl. select the model and the mesh menu and select change mash. It seems to convert it but not to a solid. still has a lot of facets to it.
So frustrating . I have almost got it. I decided to slice the existing slot and then add it to the side. seemed easier.
Sadly I can slice it but then cant save it as a seperate body or component...I know I have done this before but cant remember how...god how I hate old age..
Sadly I can slice it but then cant save it as a seperate body or component...I know I have done this before but cant remember how...god how I hate old age..
daedalusminos
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It would have been quicker starting from scratch in Fusion.
Mesh menu. Modify -> Convert Mesh.
This should then convert the model, with the model shown in black.
To create a solid surface for then sketching on, switch to Surface.
Then Modify -> Merge. With the merge window open, select the two triangles that now make up the side of the holder.
After that, stay in surface, and sketch/extrude your extra bit there.
This should then convert the model, with the model shown in black.
To create a solid surface for then sketching on, switch to Surface.
Then Modify -> Merge. With the merge window open, select the two triangles that now make up the side of the holder.
After that, stay in surface, and sketch/extrude your extra bit there.
