﻿ Getting Started Tutorials - MechDesigner > Tutorial 6: Cams: Flat, Barrel, Globoidal, 'Slot' > 6D: Slot-Cams  > Step 6D2.0: DESIGN 2: The Target Design > Step 6D2.3: Prepr 2C Add the Rocker and Stationary Cam

# Step 6D2.3: Prepr 2C Add the Rocker and Stationary Cam

### Add the Stationary Cam

 Preparation 2C: Add the Rocker

### Plan the motion for the Slot Cam

First: What do we want the Stationary Cam to look like?

 The image to the left shows the design we want. It has a Slot Cam. To remind us, .... ... the Angle of the Rocker is a function of the motion of the Sliding-Part, NOT the MMA. What is the difference between Design 1, 6D1, and this Design 2, 6D2? Design 1: We can get the motion of the Sliding-Part directly. Its motion is the output from the Design 2: We do not know the motion of the Sliding-Part directly. The Sliding-Part is one Part in an R-R-P Dyad. Note: the Motion of a Part includes its Position, Velocity, and Acceleration motion-values. This is the Motion for the Rocker that we have prepared. Q: How can we get the motion of the sliding-part? A1: METHOD 1 Use a Measurement FB to measure the position (and motion) of the sliding-part A2: METHOD 2 Use a Point-Data FB to give the position (and motion) of the sliding-part relative to the origin of the Base-Part.
 Method 1: Add a Measurement FB