Assembly CreateJointFixed

Assembly CreateJointFixed
Menu location
Assembly → Create a Fixed Joint
Workbenches
Assembly
Default shortcut
F
Introduced in version
1.0
See also
None

Description

The Assembly CreateJointFixed tool creates a joint locking two assembly parts together, preventing any movement or rotation.

Usage

1. Optionally select two geometric entities of two different parts. Other selections will be rejected.
2. There are several ways to invoke the tool:
   • Press the Create a Fixed Joint button.
   • Select the Assembly → Create a Fixed Joint option from the menu.
   • Use the keyboard shortcut: F.
3. Pre-selected parts are moved to meet at their selected entities.
4. The Create Joint dialog opens in the Task panel listing the pre-selected entities.
5. Optionally change the joint type in the dropdown list:
   • Select Fixed.
     1. If the selection list is empty: select two geometric entities.
     2. The parts are moved to meet at their selected entities.
     3. Optionally enter an Offset value.
     4. Optionally enter a Rotation value.
     5. Optionally press to change the direction of the joint.
   • Select Revolute.
     1. If the selection list is empty: select two geometric entities.
     2. The parts are moved to meet at their selected entities.
     3. Optionally enter an Offset value.
     4. Optionally press to change the direction of the joint.
     5. Optionally check the Min angle option and enter a value.
     6. Optionally check the Max angle option and enter a value.
   • Select Cylindrical.
     1. If the selection list is empty: select two geometric entities.
     2. Optionally press to change the direction of the joint.
     3. Optionally check the Min length option and enter a value.
     4. Optionally check the Max length option and enter a value.
     5. Optionally check the Min angle option and enter a value.
     6. Optionally check the Max angle option and enter a value.
   • Select Slider.
     1. If the selection list is empty: select two geometric entities.
     2. Optionally enter a Rotation value.
     3. Optionally press to change the direction of the joint.
     4. Optionally check the Min length option and enter a value.
     5. Optionally check the Max length option and enter a value.
   • Select Ball.
     1. If the selection list is empty: select two geometric entities.
   • Select Distance.
     1. If the selection list is empty: select two geometric entities.
     2. Optionally enter a Distance value.
     3. Optionally press to change the direction of the joint.
   • Select Parallel.
     1. If the selection list is empty: select two geometric entities.
     2. Optionally press to change the direction of the joint.
   • Select Perpendicular.
     1. If the selection list is empty: select two geometric entities.
   • Select Angle.
     1. If the selection list is empty: select two geometric entities.
     2. Optionally enter an Angle value.
   • Select RackPinion.
     1. If the selection list is empty: select two geometric entities of two different parts that have previously been used to define a Slider joint and a Revolute joint. (Slider direction and rotation axis must be perpendicular)
     2. Optionally enter a Pitch radius value.
   • Select Screw.
     1. If the selection list is empty: select two geometric entities of two different parts that have previously been used to define a Slider joint and a Revolute joint. (Slider direction and rotation axis must be parallel)
     2. Optionally enter a Pitch radius value.
   • Select Gears.
     1. If the selection list is empty: select two geometric entities of two different parts that have previously been used to define two different Revolute joints.
     2. Optionally enter a Radius 1 value.
     3. Optionally enter a Radius 2 value.
     4. Optionally check/uncheck the Reverse rotation option. (unchecking selects the Belt option) - not working for 1.0 RC so far
   • Select Belt.
     1. If the selection list is empty: select two geometric entities of two different parts that have previously been used to define two different Revolute joints.
     2. Optionally enter a Radius 1 value.
     3. Optionally enter a Radius 2 value.
     4. Optionally check/uncheck the Reverse rotation option. (checking selects the Gears option) - not working for 1.0 RC so far
6. The Parts are moved to meet at their selected entities.
7. Press OK to finish the tool.

Notes

• A fixed joint can be used as an actuator to control the motion of a kinematic simulation. Mouse wheel action in the Task panel immediately rearranges the connected parts.
  • Offset translates along its local Z axis, negative offsets are accepted.
  • Rotation revolves around its local Z axis, angles > 360° and even negative angles are accepted.

Properties

See also: Property editor.

A Fixed object is derived from an App FeaturePython object and inherits all its properties. It also has the following additional properties:

Data

Joint

• DataActivated (Bool): This indicates if the joint is active.
• DataDistance (Float): This stores the Distance of the Distance joint. It is also used by the RackPinion and Screw joints to store the Pitch radius, and by the Gear, and Belt joints to store Radius1.
• DataDistance2 (Float): This is the second distance of the joint. It is used only by the Gear and Belt joints to store Radius2.
• DataJoint Type (Ennumeration): The type of the joint. (Fixed, Revolute, Cylindrical, Slider, Ball, Distance, Parallel, Perpendicular, Angle, RackPinion, Screw, Gears, Belt)

Removed properties (v.1.0.0-RC-38728) These were the properties that could be used to animate:

• DataOffset (Vector): This is the offset vector of the joint.
• DataRotation (Float): This is the rotation of the joint.

Joint Connector 1

• DataDetach1 (Bool): This prevents placement1 from recomputing, enabling custom positioning of the placement.
• DataOffset1 (Placement): This is the attachment offset of the first connector of the joint. (added with v.1.0.0-RC-38728)
• DataPlacement1 (Placement): This is the local coordinate system within reference1's object that will be used for the joint.
• DataReference1 (XlinkSubHidden): The first reference of the joint.

Removed properties:

• DataElement1 (String): The selected element of the first object.
• DataObject1 (String): The first object of the joint.
• DataPart1 (Link): The first Part of the joint.
• DataVertex1 (String): The selected Vertex of the first object.

Joint Connector 2

• DataDetach2 (Bool): This prevents placement2 from recomputing, enabling custom positioning of the placement.
• DataOffset2 (Placement): This is the attachment offset of the second connector of the joint. (added with v.1.0.0-RC-38728)
• DataPlacement2 (Placement): This is the local coordinate system within reference2's object that will be used for the joint.
• DataReference2 (XlinkSubHidden): The second reference of the joint.

Removed properties:

• DataElement2 (String): The selected element of the second object.
• DataObject2 (String): The second object of the joint.
• DataPart2 (Link): The second Part of the joint.
• DataVertex2 (String): The selected Vertex of the second object.

Limits

• DataAngle Max (Float): This is the maximum limit for the angle between both coordinate systems (between their X axes).
• DataAngle Min (Float): This is the minimum limit for the angle between both coordinate systems (between their X axes).
• DataEnable Angle Max (Bool): Enable the maximum angle limit of the joint.
• DataEnable Angle Min (Bool): Enable the minimum angle limit of the joint.
• DataEnable Length Max (Bool): Enable the maximum length limit of the joint.
• DataEnable Length Min (Bool): Enable the minimum length limit of the joint.
• DataLength Max (Float): This is the maximum limit for the distance between both coordinate systems (along their Z axis).
• DataLength Min (Float): This is the minimum limit for the distance between both coordinate systems (along their Z axis).

Removed property:

• DataEnable Limits (Bool): Is this joint using limits?