We want to add a Chain-Link.
The Chain-Link is represented by one of the Parts in an RPR Dyad.
We add an RPR Dyad between a Point on Slider-Set 1 and a Point on Slider-Set 2.
As always, a Dyad has two Parts and three Joints.
•Add a new Part and join it with a Pin-Joint(R) to a Point on Y-Slider of Slider-Set 1
•Add a new Part and join it with a Pin-Joint(R) to a Point on Y-Slider of Slider-Set 2
•Join the two new Parts together with a Slide-Joint(P).
The two Parts and three Joints make the RPR Dyad.
We use the Part that is joined to Slider-Set 1 as the 'Tool-Part'. We can add a 'Solid' to this Part.
Remember, Dyads always have two Parts and three Joints.
Add an R-P-R Dyad between Slider-Set 1 and Slider-Set 2
This dyad is: R(Pin-Joint) - P(Slide-Joint) - R(Pin-Joint)
Top-Tip: Temporarily hide the Motion-Dimension FBs. See Display Filters: Hide Dimensions
STEP 1: Add a Part
STEP 2: Rename Part to 'Tool-Part'.
STEP 3: Add a Pin-Joint between the Part and the start-Point of Y-Slider1
STEP 4: Add a Part
STEP 5: Add a Pin-Joint between the Part and the start-Point of Y-Slider2
The two Pin-Joints are the R joints in the R – P – R dyad
We need a P joint to complete the dyad. P = Prismatic-Joint.
Confusingly, we call a Prismatic-Joint a Slide-Joint.
STEP 6: Add a Slide-Joint between the CAD-Line in Part and the CAD-Line in Part
The Slide-Joint completes the RPR Dyad
The Part-Outlines become Green.
When you cycle the machine, you will see the RPR Dyad move with the Slider-Sets.
To show the length variation between the Pin-Joints:
STEP 7: Add a Measurement FB between the Pin-Joints
The length variation between the Pin-Joints is from 100mm to 93.55mm.