CreateAssemblyJointDefinition in Inventor API with python

22351396 · ‎07-24-2024

I try to create an assembly joint using inventor api with python. It connects the midpoints of the edges of two faces using a rotational joint.

import win32com.client as wc

try:
  
    inv = wc.GetActiveObject('Inventor.Application')
 
    inv_assembly_document = inv.Documents.Add(12291, inv.FileManager.GetTemplateFile(12291, 8962))

    assembly_com_definition = inv_assembly_document.ComponentDefinition

    tg = inv.TransientGeometry
    trans = tg.CreateMatrix()
    part_path = r'C:\\Users\\MINHAZULISLAM\\Desktop\\API Join\\Part1.ipt'
    
    matrix1 = tg.CreateMatrix()
    translation_vector1 = tg.CreateVector(0, 0, 0)
    matrix1.SetTranslation(translation_vector1)
    occ1 = assembly_com_definition.Occurrences.Add(part_path, matrix1)
    part_path2 = r'C:\\Users\\MINHAZULISLAM\\Desktop\\API Join\\Part2.ipt'
    matrix2 = tg.CreateMatrix()

    translation_vector2 = tg.CreateVector(8, 6, 2)
    matrix2.SetTranslation(translation_vector2)
    occ2 = assembly_com_definition.Occurrences.Add(part_path2, matrix2)

    face1 = occ1.SurfaceBodies.Item(1).Faces.Item(1)
    face2 = occ2.SurfaceBodies.Item(1).Faces.Item(1)
    edge1 = occ1.SurfaceBodies.Item(1).Edges.Item(1)
    edge2 = occ2.SurfaceBodies.Item(1).Edges.Item(1)
    
    intent1edge1 = assembly_com_definition.CreateGeometryIntent(edge1, 57871)
    intent2edge1 = assembly_com_definition.CreateGeometryIntent(edge2, 57860)
    intent_point1 = assembly_com_definition.CreateGeometryIntent(face1,intent1edge1)  
    intent_point2 = assembly_com_definition.CreateGeometryIntent(face2,intent2edge1) 
    assembly_join=assembly_com_definition.Joints
    joint_def=assembly_join.CreateAssemblyJointDefinition(102401, intent_point1, intent_point2)

    
    
    joint = assembly_com_definition.Joints.Add(joint_def)
    print("Making joint visible...")
    joint.Visible = True
    assembly_path = r'C:\\Users\\MINHAZULISLAM\\Desktop\\API Join\\assembly1v1.iam'
    print(f"Saving assembly document to {assembly_path}...")
    inv_assembly_document.SaveAs(assembly_path, True)

    print("Script completed successfully.")

except Exception as e:
    print(f"An error occurred: {e}")

An error occurred: (-2147352567, 'Exception occurred.', (0, None, None, None, 0, -2147467259), None)

YuhanZhang · ‎08-09-2024

If you mean to contect the mid-point of two linear edges, you can update your code to below:

intent1edge1 = assembly_com_definition.CreateGeometryIntent(edge1, 57859)
intent2edge1 = assembly_com_definition.CreateGeometryIntent(edge2, 57859)

Hope above helps.

Thanks,

Rocky

If this solves the problem please click ACCEPT SOLUTION so other people can find it easily.

Rocky Zhang
Inventor API PD
Manufacturing Solutions
Autodesk, Inc.