Mechanism | Add Pin-Joint

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Mechanism | Add Pin-Joint

Add Pin-Joint

See also: Edit-Pin-Joint ( Motor and Gearbox Sizing )


Technical Definition: Revolute Joint :

A joint that only allows relative rotary motion between two Parts (rigid bodies) on one Mechanism-Plane.

MechDesigner definition : Pin-Joint :

A joint between two Parts on a Mechanism-Plane that forces a Point in one Part to be coincident with a Point in the other Part.

Point :

A fixed position on the XY-Plane of a Part.

Point (alternative definition)

A Point represents an Axis that is perpendicular to the Part Mechanism-Plane.

Pin-Joint (alternative definition) :

A joint in which an axis (defined by a Point) in a Part is made to be a coincident with an axis (defined by a Point) in a different Part. The axes are perpendicular to the Mechanism-Plane.

The XY-Plane of all Parts (and the Base-Part) in a Mechanism-Editor are coplanar with the Mechanism-Plane.

Pin-Joints in the Graphic-Area


Red-14-1b MD-Dowel-Symbol  - symbol for a Pin-Joint that is fixed to the Base-Part.

Red-14-2 MD-PointandPinJoint-Symbol  - the outer circle is the symbol for a Pin-Joint that moves relative to the Base-Part

The inner circle is the symbol for the Points that become coincident when you do Add Pin-Joint.

<<< Pin-JointRed-14-1b between a Part and the Base-Part.

<<< Pin-JointRed-14-2  between two(2) added Parts.

Add Pin-Joint


STEP 1: Add Pin-Joint


1.Mechanism-Editor: Add menu > Mechanism menu  > Add Pin-Joint

- or -

1.Mechanism-Editor: Kinematic-elements toolbar > Add Pin-Joint

STEP 2: Select two(2) Points:

1.Mechanism-Editor: Click a PointRed-14-1 in a free Part

2.Mechanism-Editor: Click a PointRed-14-2 in a different free Part

- or -

2.Mechanism-Editor: Click a PointRed-14-2 in a kinematically-defined Part.

The two(2) Points become coincident at the Pin-Joint.

If the Select-Elements dialog opens - see Special-Case


See also:

Add Slide-Joint

Add Ball-Joint

Add Motion-Dimension FB

VIDEO : Add Pin-Joint - Simple-Case


Add Pin-Joint (Simple Case)


tog_minusSpecial-case - Add two(2) coincident Pin-Joints

VIDEO - Add Pin-Joint - Special-Case:


Add Pin-Joint - Special Case