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Mastering Assembly Creation: Techniques and Tools for Efficient Design

Learn how to create assemblies in Autodesk Inventor, from bottom-up to top-down approaches, using constraints and assembly options effectively. Harness the power of assembly constraints, adaptive parts, and pattern components in your designs with this comprehensive guide. Master interference checking, driving constraints, and creating presentation files to streamline your workflow. Manipulate Bills of Materials (BOM), create balloons, and edit parts lists effortlessly. Enhance your assembly modeling skills and optimize your design process with practical tips and techniques.

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Mastering Assembly Creation: Techniques and Tools for Efficient Design

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  1. Chapter 6 Creating and Documenting Assemblies

  2. Chapter 6 - Objectives • After completing this chapter, you will be able to • Understand the assembly options • Create bottom-up assemblies • Create top-down assemblies • Create subassemblies • Constrain components together using assembly constraints • Edit assembly constraints • Create adaptive parts • Pattern components in an assembly

  3. Chapter 6 – Objectives continued • After completing this chapter, you will be able to • Check parts in an assembly for interference • Drive constraints • Create a presentation file • Manipulate and edit the Bill of Materials (BOM) • Create individual and automatic balloons • Create and perform edits on a parts list of an assembly

  4. Creating Assemblies • New Assembly Files • .IAM Extension • Creation Methods • New icon – What To Do • New – File Menu • New icon – Down Arrow

  5. Creating Assemblies • Assembly Options • Tools > Application Options > Assembly tab

  6. The Assembly Capacity Meter • Number of occurrences in active assembly • Number of open files • Memory (RAM) used

  7. Creating Assemblies • Assembly Browser • Part Occurrence • Assembly Constraints • Subassembly Occurrence

  8. Creating Assemblies • Bottom-Up Approach • Components are created in their individual files • Place Component tool • ‘P’ hot key

  9. Creating Assemblies • Top-Down Approach • Create new components while in an assembly • Create Component tool • Create In-Place Component Dialog • Component Name • Template to be used • File Location • Default BOM Structure • Virtual Component • Constraint to selected face

  10. Creating Assemblies • Occurrence • Copy of existing components • Copy/Paste • Place Component • Drag & Drop • Any change to original updates all occurrences • Save Copy As… to create a copy that is not linked to original

  11. Creating Assemblies - Editing • Occurrence • Active Component – Available for edit • Double-click in the graphics area • Double-click file name/icon in the Browser • Right-click in the Browser > Edit

  12. Creating Assemblies • Occurrence • Grounded Component • The Component will not move • All Degrees Of Freedom are removed • When constraining, components move to a Grounded component • Any # of components can be grounded

  13. Creating Assemblies • Subassembly Creation • Create Component • Change file type to Assembly • Promote/Demote • Right-click after selecting a component in the Browser • Promote – moves a component(s) to it’s parent assembly • Demote – moves a component(s) to a subassembly • Restructuring Components • Drag in Browser

  14. Restructuring Components • Move part from the main assembly to another subassembly • From subassembly to subassembly • From subassembly to the main assembly

  15. Assembly Constraints • Constraints • Create relationships between components • Bolt and a Hole • Reduce the number of Degrees Of Freedom • 6 total (3-translational & 3-rotational) • View > Degrees of Freedom • Component Properties > Occurrence tab

  16. Assembly Constraints • Constraints • Placing Constraints • Constraint tool • Right-click > Constraint • ‘C’ hot key • Place Constraint Dialog

  17. Assembly Constraints • Constraints • Constraint Types – Assembly tab • Mate • Plane, Line, or Point • Assembles two components so that the surface normal on the selected planes are opposite each other • Assembles the edges of lines • Assembles two points together • Flush Solution • Aligns two components so the selected planes face the same direction (surface normal point in the same direction)

  18. Assembly Constraints • Constraints • Constraint Types – Assembly tab • Angle • Specify the degrees between the selected planes

  19. Assembly Constraints • Constraints • Constraint Types – Assembly tab • Tangent • Defines a tangent relationship between planes, cylinders, spheres, cones, and ruled splines • At least one selected face must be a curve • Inside/Outside Solutions

  20. Assembly Constraints • Constraints • Constraint Types – Assembly tab • Insert • Two circular edges • Centerlines are aligned & mate constraint is applied to the planes defined by the circular edges. • 5 DOF are removed with an insert constraint

  21. Assembly Constraints • Constraints • Constraint Types – Motion tab • Animation the motion of gears pulleys, rack and pinions, etc. • You can drive one component and cause others to move accordingly • Motion constraints are secondary constraints • They do not maintain positional relationships between components • Recommended: fully constraincomponents before applyingmotion constraints, then suppress the constraints restricting motion

  22. Assembly Constraints • Constraints • Constraint Types – Motion tab • Rotation • Define a component that will rotate in relation to another component • Specify a ratio for the rotation between the two components • Forward & Backward solution types

  23. Assembly Constraints • Constraints • Constraint Types – Motion tab • Rotation-Translation • Define rotation relative to translation of a second component

  24. Assembly Constraints • Constraints • Constraint Types – Transitional tab • Transitional • Specifies a transitional relationship between a cylindrical part face and a contiguous set of faces on another part

  25. Assembly Constraints • Constraints • Snap ‘n Go • ALT – drag a part to another part • No Place Constraint dialog box • Select correct area on the part to apply the constraint

  26. Assembly Constraints • Moving & Rotating Components • Move Component Tool • Drag individual components in any linear direction in the viewing plane • Temporarily suppresses assembly constraints on the component until the assembly is updated (constraints are then re-applied) • Rotate Component Tool • After selected, the 3D rotate symbol appears on the selected component • Similar to the Move Component tool, Rotate Component temporarily suppresses any assembly constraints applied to the component

  27. Assembly Constraints • Editing • Two Methods via the Browser • Double-click the constraint name • Right-click the constraint name and select Edit, Suppress, or Delete • Edit - opens the Edit Constraint dialog box • Suppress – the assy constraintis not applied • Delete – deletes the assy constraint

  28. Assembly Constraints • Conflicts • Alert Box • If you try to place or edit an assembly constraint and it cannot be applied, an alert box is displayed explaining the problem. • Conflicting • When assembly constraint conflicts with another one, a small yellow icon with an exclamation point is displayed in the Browser • Recover • Displays the Design Doctorto walk you through the steps to fix the problem

  29. Assembly Constraints • Conflicts • Redundant • Occurs when too many constraints are added. • Constraints are preceded with an information symbol

  30. Browser Views • Assembly View • Assembly constraint symbols nested below both constrained components • Modeling View • Assembly constraints are located in a Constraints folder

  31. Find Other Half • Find component that constrained is applied to

  32. Isolating Constraint Errors • Design Doctor • Isolate and Edit Constraint • Turn off all components except those that participate in the common constraint

  33. Exercise 6-1 • Assembling Parts

  34. Designing Parts In-Place • In-Place Creation • Initial Sketch Creation • Face of an existing assembly component • Work Plane • Automatically constrain the sketch plane to the selected face or work plane • Creates a Flush constraint between the sketch and the selected face or plane

  35. Designing Parts In-Place • In-Place Creation • After the base feature is created • Create additional features based on geometry from another part in the assembly an adaptive work plane is created. • The adaptive work plane moves as necessary to reflect changes in the component that it is based upon • The sketch moves with the plane • Features based on the sketch adapt to match its new position

  36. Exercise 6-2 • Designing Parts in the Assembly Context

  37. Assembly Browser • Tools • In-Place Activation • Double-click a subassembly or component occurrence in the Browser to activate it • Right-click > Edit • All components that are not active are shaded in the Browser

  38. Assembly Browser • Tools • Visibility Control • Expand the Browser until the desired component occurrence is visible • Right-click > Visibility

  39. The Assembly Return Tool • Return to subassembly • Return to top level assembly

  40. Visibility Control • Parts and subassembly visibility • On or Off • Right-click a component and select Visibility from the menu

  41. Adaptivity • Definition • Allows the size of a part to be determined by setting up a relationship between the part and another part in the assembly • Under-constrained sketches and features can adapt • The adaptivity relationship is acquired by applying constraints between an adaptive sketch or feature and another part • The sketch cannot be fully constrained • A part can only be adaptive in one assembly at a time • Only one occurrence of a part can be adaptive – other occurrences reflect the size of the adaptive part • Example • Diameter of a pin from the size of a hole or vice-versa

  42. Adaptivity • Options • Tools > Application Options > Assembly tab

  43. Adaptivity • Example • The rectangular sketch is not dimensioned along its length

  44. Adaptivity • Example • The extruded feature is defined as adaptive

  45. Adaptivity • Example • Parts are placed, constraints applied between the two plates (flush between the faces on the ends of the plates)

  46. Exercise 6-3 • Creating Adaptive Parts

  47. Enabled Components Enabled • Component is displayed as wire frame and cannot be selected in the graphics window • Right-click a component and select Enabled from the menu

  48. PATTERN COMPONENTS • Pattern Components • Rectangular • Circular • Based on Feature Pattern • Suppress Elements • Pattern Assemblies • Replace Components

  49. Exercise 6-4 • Patterning Components

  50. Minimum Distance Tool • In an assembly measure distances between • Components • Parts • Faces and Edges

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