Gear Generation software 1

[gearman1234]

I have a 12 DP,20 deg standard tooth thickness semi-topping hob. I want to know how much tip chamfer variation would be obtained in hobbing gears 64 Teeth and 27 teeth.

I would appreciate if anybody can give information about the softwares available.Demo as well as paid.

 

[diamondjim]

is pt1 a set of coordinates?
When I run your program it seems to
hang up on the selection of pt1.

I assume your hob drawing is centered
on the 0,0 coordinates and centered on
its pitch point centerline.

You can look at your command dialogue
script and see where it is hanging up
and if it is at the same place.

 

[diamondjim]

I have a feeling that your insert point
is not within the window defined by
pt2 and pt3. In order for acad to insert
something at point pt1 you have to be
zoomed to a window that includes pt1 plus
the full extents of the hob profile.
I will try to define a zoom window appropriate
and see if your program works.
Since one of your coordinates must be (0 minus 6,(rolrad
minus 2) and the other extent (0 plus 10),(rolrad plus 2)
I am not certain that this will be a large enough
window to draw in all of the inserted hob profiles.

 

[diamondjim]

I changed pt2 and pt3 to give a zoom window
as follows

(setq rolangrad (/ (* rolangdeg pi) 180.0))

(setq theta (/ rolangrad numtgt))

(setq pt2 (list (* -1.25 rolrad) (* -1.25 rolrad)))
(setq pt3 (list (* 2.25 rolrad) (* 2.25 rolrad)))

(setq rgt 3.0)

(command "zoom" "w" pt2 pt3)

(while (<= rgt numtgt)

(progn
----------------------------------
I still get an error and I think it is in
regard to pt1. I cannot follow your logic.
Sorry.

 

[luky]

thank you very much mr Gearman.
i have acadLT and it doesn't work lisp prog. i'll try to download the "extender" then i'll tell you the results.
best regards
luke