A Pin-in-a-Slot can have many different mechanical design arrangements.

For example:

Design A

Design B:

Design C:

However, Designs A, B, and C must use the same kinematic-construction

Pin-in-a-Slot - Design C

Note: In the image, the Parts are not kinematically-defined. The model needs one more joint to complete the dyad, which can be a Slide-Joint or a Pin-Joint.

These 5 Steps are the instructions of how to build the construction in the image.

STEP 1: Draw a Line* in a Part - in this case, it is a Line in the Base-Part

STEP 2: Add a Part

STEP 3: Add a Slide-Joint

Note:

If the Pin-Joint is not at the start-Point or end-Point of Part, we must add geometry to Part to control the location of the Pin-Joint in Part. E.g: Design C , above.

STEP 4: Add a Part

Note:

If the Pin-Joint is not at the start-Point or end-Point of Part, we must add geometry to Part to control the location of the Pin-Joint in Part.

STEP 5: Add a Pin-Joint

The four-bar kinematic-chain is not yet complete. The kinematic-chain:

•does not have a Motion-Part - a Rocker or a Slider.

•is not kinematically-defined - there are two Parts and 2 Joints (the Slide-Joint and Pin-Joint).

In the next section, you will complete the kinematic-chain. There are many possibilities.

You can add:

1.A Motion-Part - a Rocker or a Slider. It will move relative to the Base-Part

2.Join the Motion-Part to Part with a Pin-Joint or a Slide-Joint.

In the dyads we describe below, the letters R-P represent two joints.

•The R is a Pin-Joint - R for a Revolute-Joint, which is the kinematic-term for Pin-Joint.

•The P is a Slide-Joint - P for a Prismatic-Joint, which is the kinematic term for Slide-Joint.

When you add a third joint, which may be a Slide-Joint(P) or a Pin-Joint(R), the dyad is complete.

You can also join the dyad to a Rocker or a Slider. Thus, it is possible to build eight different kinematic-chains.The dyad is an R-P-R dyad. The dyad is an R-P-P dyad.The dyad is an R-R-P dyad.

Configurations:

1  & 2: RP+R + Rocker OR  RP+R + Slider.

3 & 4: RP+P + Rocker OR  RP+P + Slider.

5 & 6: R+RP + Rocker OR  R+RP + Slider.

7 & 8: P+RP + Rocker OR  P+RP + Slider.

It is also possible that the dyad in each configuration has four closures. See Change Dyad Closure.

Configuration 1 (See Step 2.7): Rocker + R-P-R dyad

Join Part to the Base-Part with a Pin-Joint

Add Part .Join Part to Part with a Slide-Joint. The Joint uses the CAD-Line in the two Parts.

Add Part. Join Part to Part with a Pin-Joint

Join Part to the Base-Part with a Pin-Joint. Add a Motion-Dimension FB to control Part it is now a Rocker.

Note: there are many options for this dyad

Configuration 2: Rocker + R-R-P dyad

Join the start-Point of Part to the Base-Part with a Pin-Joint.

Add a Motion-Dimension FB to control the position and motion of Part.

Add Part. Join Part to Part with a Slide-Joint.

Add Part. Join Part to the Base-Part with a Pin-Joint.

Join the end-Point of Part to the start-Point of Part with a Pin-Joint.

Configuration 3 (See Step 2.6): Rocker + R-P-P dyad

Join CAD-Line of Part to a Line in the Base-Part with a Slide-Joint.

Add a vertical Line to Part.

Add Part. Join the CAD-Line in Part to the vertical Line in Part with a Slide-Joint.

Add Part. Join the start-Point of Part to the start-Point of a Line in the Base-Part with a Pin-Joint, Add a Motion-Dimension FB - it is now a Rocker.

Join a Point in Part to the end-Point of Part with a Pin-Joint

Configuration 4: Slider + R-R-P dyad (or P-R-R)

Join Part to the Base-Part with a Slide-Joint

Add a Motion-Dimension FB to control Part - it is now a Slider

Add a vertical Line to Part.

Add Part. Join the CAD-Line in Part to the vertical Line in Part with a Slide-Joint.

Add Part. Join the start-Point of Part to a Point in the Base-Part.

Joint the end-Point of Part to a Point in Part with a Pin-Joint

Configuration 5 - Slider + P-R-P dyad

Join Part to the Base-Part with a Slide-Joint . Add a Motion-Dimension FB to control Part - it is now a Slider

Add a vertical Line to Part.

Add Part. Join the CAD-Line in Part to the vertical Line in Part with a Slide-Joint.

Add a Line to the Base-Part at about 40º from horizontal.

Add Part.  Joint the CAD-Line of Part to the new Line in the Base-Part with a Slide-Joint.

Joint a Point in Part to a Point in Part with a Pin-Joint

Configuration 6 - Rocker + P-R-P dyad

Add a vertical Line to the Base-Part, and short horizontal Line)

Add Part. Join Part to the vertical Line in the Base-Part with a Slide-Joint.

Add Part. Join the start-Point of Part to the start-Point of the short Line in the Base-Part. Add a Motion-Dimension FB to control Part - it is now a Rocker.

Add Part. Join the CAD-Line in Part to the CAD-Line of Part with a Slide-Joint.

Join a Point in Part to a Point in Part with a Pin-Joint

Configuration 7 - Slider + R-P-R dyad

Add a horizontal Line, and a Line at ~40º to horizontal to the Base-Part.

Add Part. Join CAD-Line in Part to the Line at ~40º the short Line in the Base-Part. Add a Motion-Dimension FB to control Part - it is now a Slider.

Add Part. Join Part to the end-Point of the horizontal Line with a Pin-Joint.

Add Part. Join the CAD-Line in Part to the CAD-Line of Part with a Slide-Joint.

Join the end-Point in Part to a Point in Part with a Pin-Joint

Configuration 8 -  Slider + R-P-P dyad

Add a horizontal Line, and a Line at ~40º to horizontal to the Base-Part.

Add Part. Join CAD-Line in Part to the Line at ~40º the short Line in the Base-Part. Add a Motion-Dimension FB to control Part - it is now a Slider.

Add Part. Join Part to the horizontal Line with a Slide-Joint.

Add a vertical Line to Part

Add Part. Join the CAD-Line in Part to the vertical Line in Part with a Slide-Joint.

Join the end-Point in Part to a Point in Part with a Pin-Joint