Thanks guys

Its always right in front of me

In X3

Is there a way to move dimensions after they are

set - I seem to remember that they could be

dragged in previous versions - also can a note

be edited

Thanks for help

The history tree can be used to modify some

aspects of a model after it is created

fillet sizes - length of extrudes - chamfers

- draft angles for example

Analyzing the 2 profiles they are not the same

the tops are unequal arcs - a sweep surface

using the 2 along profiles and one along gives a

surface that analyzes as good - the distance

between the 2 along splines is not constant

all the way around

create a face toolpath in the front plane

then rotate the toolpath about the top plane

in as many angles as wanted - maybe start

with 16 sides - then go to 32 sides etc

until it is as close to round as wanted

Also make the "arbor dia" on the tool definition

the same as the cutter dia

if you have the stock and finished parts as solids there is an analyze volume that calculates the volume of solids

Could also use "edit toolpath" and make the move

between contours a rapid move

Also make the tool sahnk the same size as the

cutting dia

If you go to tool settings there is a box to

adjust feed on arc move - I think it scales

the feed rate based on how close the arc radius

is to the tool radius

Create a rotated surface

create a line above the surface

offset the line .047 (6/.047) times

project the lines onto the surface

Steve is correct I assumed that the center of the radius was at the center of rotation

The tool will stay stationary and the part

will rotate under it to give the desired groove

- assuming the groove is the same depth all around and there is no cuvature in the x axis direction

Lay the part out flat in the top view - the length of the part around the outside is determined by the included angle that the groove

makes from the dia to the center - then move the geometry up in the z axis by ((17.012) - (3.078)) then do a contour toolpath with Y axis substituted using the 6.156 dia of rotation

I can e-mail you a sample if this is confusing

Correction again formula should be

((17.012)-(3.078))

Previous post 30.078 dia should be 3.078

I think the 4th axis rotation with 2d contour

will work - lay out the geometry flat and do

a y axis subsitution - the y axis length will be

equal to the included angle of the 17.01 radius-

in the top c-plane draw a line eqaual in length to the circumference of the 3.078 dia - a contour toolpath from end to end on this line will go once around the 3.078 dia starting at 0 and ending at 360 - to place the geometry at any

angle move it along the line - end point is 0 middle is 180 etc -draw your groove so that the

length falls at the included angle of the 17.01 dia then translate the groove geo z+ ((17.01/2) - (3.078/2)) then write a contour toolpath and do a y axis substitution uaning 30.078 dia

I can e-mail you an example if you like

If the lines are connected and will chain

write a contour toolpath with cutter comp off

and a toolpath filter - then backplot and save the backplot as geometry - this should smooth out your gemetry and give tangent lines and arcs - if the geometry wont chain try setting the chaining tolerance to a bigger value

An advantage of using the solid if there are multiple faces over using surfaces is not getting duplicate curves on the edges

Create the toolpath and set the parameters you want then export the toolpath - then have

students inport the toolpath and and add their geometry

Go to settings - machine definition - control

definition - nc output there is a switch

there that will allow them to be turned off

Write a contour toolpath with no cutter comp

filter the toolpath with whatever tolerance

needed then do a backplot save geomtry

If I remember correvtly it was called "sqaush" in V9

I think this fplot will do what you want

step_var1 = t

step_size1 = 10

lower_limit1 = 0

upper_limit1 = 90

geometry = nurbs

origin = 0,0,0

x =(2-(.01*t))*cos(t)

y =(2-(.01*t))*sin(t)

for your application change the 2 to your radius

change the step size to 1

change the .01 to the amount each line shortens

make sure to check that the variables in the

fplot dialog box are set to match those in your equation

this example above assumes going from 0 to 90 degreesin 10 degree increments

with each line shortening by .01

it will plot a nurbs curve

That was it works fine - very nice

Thank you