Helical sweep thread blend?

[sacko200]

Hi,

I created a part recently with a thread going around a
simple revolved cylinder i made. The thread is fine and
has the correct pitch and dimensions but as it was done
with a helical sweep it starts with a straight flat
vertically upright from the surface of the revolve.

However I want the thread to "blend" into the revolve as
if it were tapering down to a point on the surface. This
is for ease of use as the part is from a bottle lid so it
will be easier to start screwing if the thread is tapered
down to the surface.

I've tried surface modelling using the style tool with
curves on the surface etc but it doesn't look right. Does
anyone have any suggestions as to how it could be done?

Regards.

 

[kenppy]

there are a number of ways to tackle this, have a look at this for ideas

2011-10-21_060816_prt0001.prt.zip

 

[Vinom]

hi sacko
As kenppy said there are numerous way to figure out the problem.here i have furnished a easy way of solution for ur query.
do check it out. i have added snapshots too.


2011-11-18_005428_springsweepprofile.zip

 

[pjw]

Just put a radius at the end of your trajectory at the end of the parallel bit to simulate the threading tool pulling away from the job. It really is as simple as that. No need for complicated surfaces.

 

[kenppy]

No need for complicated surfaces.

& Vinom

I wish I knew about the radius, I was under the impression that the swp profile had to be one piece!

 

[akshaypassion66]

Hi kenppy! im akshay here, i wish i want to learn about thread through helical cut & wanted to add mechanism to it. is posible? if, please guide the path...


I'm using pro-e Wildfire 5.0


Thnks in advance.

 

[kenppy]

not sure what you are asking for with regard to the mechanism, please explain