topic Re: Multiple offset in Inventor Forum

Multiple offset

Anonymous — Tue, 30 Aug 2016 08:43:18 GMT

How can I create multiple offset? The parameters are the quantity and spacing

Re: Multiple offset

CCarreiras — Tue, 30 Aug 2016 09:14:39 GMT

Hi!

You have to create one at the time.

Re: Multiple offset

Anonymous — Tue, 30 Aug 2016 09:35:42 GMT

Does anyone write iLogic that would solve this problem?

Re: Multiple offset

JDMather — Tue, 30 Aug 2016 11:11:40 GMT

Attach your file here.

I suspect you are not using the correct Inventor terms or techiniques.

Re: Multiple offset

Anonymous — Tue, 30 Aug 2016 11:28:43 GMT

I have no file. I just want a tool offset used for multiple offset, for example, offset the circle 30 times every 5 mm

Re: Multiple offset

Mark.Lancaster — Tue, 30 Aug 2016 12:17:20 GMT

@Anonymous

And after you do that, what are your doing next with these numerous circles?

Re: Multiple offset

Anonymous — Tue, 30 Aug 2016 12:34:51 GMT

I projected geometry on the curved surface for a specific CNC machining on 5 axis machine

Re: Multiple offset

Mark.Lancaster — Tue, 30 Aug 2016 12:39:39 GMT

@Anonymous

If you provide an example of what you're trying to accomplish maybe we can offer another suggestion.

If you don't even have a part or an example how do you suspect that we are going to assist you?

Re: Multiple offset

mcgyvr — Tue, 30 Aug 2016 13:13:55 GMT

@Anonymous wrote:
I projected geometry on the curved surface for a specific CNC machining on 5 axis machine

Sounds like you need better CAM software..

You shouldn't need to create each tool path in a sketch.. That should just be automatic in the CAM software..

I'm assuming these circles are the path that the tool should follow..

http://www.autodesk.com/products/cam/features/inventor-hsm/3-axis-5-axis-machining/5-axis-multiaxis-operations

Re: Multiple offset

Anonymous — Tue, 30 Aug 2016 18:26:12 GMT

I use HSM. The problem is described here.

http://forums.autodesk.com/t5/support/milling-perpendicular-to-the-surface/m-p/6392634#M14961

http://forums.autodesk.com/t5/machining-discussions/mill-curved-surface/m-p/6353819#M8648

HSM for now there is no solution to this problem

Re: Multiple offset

Anonymous — Wed, 31 Aug 2016 08:32:20 GMT

The solution is to make a projection on the curved surface of multiple offset.

This is reason why I need help with multiple offset

Re: Multiple offset

Curtis_W — Wed, 31 Aug 2016 15:03:10 GMT

Hi kresimir.belec,

I looked at this and could not figure it out quickly, and unfortunately don't have the time to pursue it further, but if you create a new post on the Inventor Customization forum:

http://forums.autodesk.com/t5/Autodesk-Inventor-Customization/bd-p/120

.... and reference the example below, and ask how to modify this example to be able to use it while selecting an existing profile, I think that someone can provide an iLogic solution.

Please link the new inquiry to this one (and visa versa) to aid in future searches.

I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com

' Check to make sure a sketch is open.
If Not TypeOf ThisApplication.ActiveEditObject Is PlanarSketch Then
	MessageBox.Show("A sketch must be active.", "iLogic")
    Exit Sub
End If

' a reference to the active sketch.
Dim oSketch As PlanarSketch
oSketch = ThisApplication.ActiveEditObject

' a reference to the transient geometry collection.
Dim oTransGeom As TransientGeometry
oTransGeom = ThisApplication.TransientGeometry

' Create a rectangle
Dim oRectangleLines As SketchEntitiesEnumerator
oRectangleLines = oSketch.SketchLines.AddAsTwoPointRectangle( _
                                            oTransGeom.CreatePoint2d(0, 0), _
                                            oTransGeom.CreatePoint2d(10, -10))
                                            
' Create a new object collection
Dim oCollection As ObjectCollection
oCollection = ThisApplication.TransientObjects.CreateObjectCollection

' Add the first sketch line of the rectangle to the collection
oCollection.Add(oRectangleLines.Item(1))

' Get the sketch normal
Dim oNormalVector As UnitVector
oNormalVector = oSketch.PlanarEntityGeometry.Normal

' Get the direction of the sketch line being offset
Dim oLineDir As UnitVector2d
oLineDir = oRectangleLines.Item(1).Geometry.Direction

Dim oLineVector As UnitVector
oLineVector = oTransGeom.CreateUnitVector(oLineDir.X, oLineDir.Y, 0)

' The cross product of these vectors is the
' natural offdirection for the sketch line.
Dim oOffsetVector As UnitVector
oOffsetVector = oLineVector.CrossProduct(oNormalVector)

' Get the desired offvector (the +ve y-axis)
Dim oDesiredVector As UnitVector
oDesiredVector = oTransGeom.CreateUnitVector(0, 1, 0)

Dim bNaturalOffsetDir As Boolean

If oOffsetVector.IsEqualTo(oDesiredVector) Then
    bNaturalOffsetDir = True
Else
    bNaturalOffsetDir = False
End If

oOffset = InputBox("Enter an offset distance (in centimeters).", "iLogic", "5")
oCount = InputBox("Enter the number of offsets.", "iLogic", "1")

i = 1
Do Until i = oCount+1
oDistance = oOffset*i
Call oSketch.OffsetSketchEntitiesUsingDistance _
(oCollection, oDistance, bNaturalOffsetDir, True)
i = i + 1
Loop