A Pin-in-a-Curved-Slot' is frequently used in a mechanism to 'change-over' between product sizes.
Why is the slot 'curved'?
At the 'Back Position', the image to the left, we make an adjustment by moving the Pin-Joint along the curved slot from to
As you move the Pin along the curved slot from to , the tool moves to the left, from to .
At the 'Forward Position', the image to the right, you can see that the same adjustment does not change the position of the tool.
Therefore, when you make an adjustment from to , you can increase the length of the stroke, but one end of the stroke does not changed.
How does this work? What is the radius of the Curved Slot? Where is the Curved Slot in the Orange Part?
You would move the slider to the 'Design Position'. This is where you want the Tool to remain not to move when you move the Pin-Joint in the Curved Slot.
Then you would design a Connecting Link and a Curved Slot to:
If you need to know how to model this configuration in MechDesigner, it is really quite easy. Please email.