Kaji
Guest
I honestly think you can do it on a "free" path but you have to give all points and around there is a macro to make a pattern on a helical spiral (spring shape).
on any path I don't seem to remember that you can do, in the end, even if it is not the maximum you should do the 4 four patterns, two for the straight longiline parts and two for the curves.
By the way, if in your case the sides of the tooth are aligned to the sides of the belt, you should make the patterns of space between two teeth as a pocket, instead of the patterns of the teeth.
on any path I don't seem to remember that you can do, in the end, even if it is not the maximum you should do the 4 four patterns, two for the straight longiline parts and two for the curves.
By the way, if in your case the sides of the tooth are aligned to the sides of the belt, you should make the patterns of space between two teeth as a pocket, instead of the patterns of the teeth.
andrea1974
Guest
I did the single teeth pattern in fact... Why should I do the empty "space" pattern between my teeth? I don't understand. Is it easier to do you say?
Kaji
Guest
you managed to make the pattern of the hubs because the external faces of the tooth are not aligned to the external faces of the belt, otherwise he would not have been able to reconstruct all the faces of the other teeth, but I think it is simpler showing an image
your case is like that of the belt first belt at the top where due to a slight tapering of the external faces of the teeth they are not aligned to the red face of the belt, so the pattern manages to close the whole surface.
if you were like in the second case when the external faces of the teeth being aligned with the external face of the belt constitute a single face (the blue one) and making the pattern the software leaves the teeth open and fails to reconstruct the solid, in the image it is seen in fact that it does not make the green face in the preview of the teeth of the pattern but leaves it open.
in the latter case you should have done the dual pattern that is that of the pocket between two adjacent hubs, in this case the pattern working for removal of material, always manages to complete the operation as you see in the preview.
your case is like that of the belt first belt at the top where due to a slight tapering of the external faces of the teeth they are not aligned to the red face of the belt, so the pattern manages to close the whole surface.
if you were like in the second case when the external faces of the teeth being aligned with the external face of the belt constitute a single face (the blue one) and making the pattern the software leaves the teeth open and fails to reconstruct the solid, in the image it is seen in fact that it does not make the green face in the preview of the teeth of the pattern but leaves it open.
in the latter case you should have done the dual pattern that is that of the pocket between two adjacent hubs, in this case the pattern working for removal of material, always manages to complete the operation as you see in the preview.
Kaji
Guest
some house software provide macros and libraries for dynamic assembly and modification of belts and pulleys (probably there are also free lisp around); an example can be the one shown in this video from minute 6:20 onwards for modeling version 20.2
andrea1974
Guest
Kaji
Guest
for a toothed belt is not exactly the perfection since the rototranslation creates solids with a constant section, while it is good for a square section belt for example.
for flexible pipes is instead more suitable the command "add" tube to which the path is enough and insert the data of the diameter and the thickness, while for the rigid tubes there is the basic piping that makes you easily trace the path only to be connected and complete with command "add pipe"