MechDesigner Reference & User Interface > How to... and FAQs > Mechanism Editor: How to... and FAQs > How to... > ... add two Motions together, or add two Torques

To add motions together:

For example, you may want to add a Constant-Velocity motion to a Mod-Sin indexing motion:

1.Add to the graphics-area a Linear-Motion FB, two Motion FBs and a Math FB.

2.Link a different motion to each Motion FB ; in Motion FB dialog select Linear or Rotary as the Data-Type, as required.

3.Edit the Math FB, add 1 x Input-Connector (a total of two input-connectors)

4.Connect wires from the Linear-Motion FB to the Motion FBs and from the Motion FBs to two input-connectors of the Math FB

5.Edit the Math FB: add the Equations: p(0)+p(1) ; v(0)+v(1) : a(0)+a(1) for each Data-Channel (each wire has 3 Data-Channels)

6.Select Linear-Coordinates or Rotary Coordinates as the Output Data-Type, as with Motion FB.

7.Check the new motion with a Graph FB.

To add Torques together from separate drives

For example, add Torques from different cams that are on one cam-shaft:

1.Configure the Power Source to make sure the Cam is the power-source for the follower, of each kinematic-chain.

2.Add to the graphics-area a Force-Data FB and a Math FB.

3.Edit the Force-Data FB, select the motor that rotates/drives each Cam.

4.Edit the Math FB, add an Input-Connector (a total of two Input-Connectors)

5.Connect wires from the Force-Data FBs to the input-connectors of the Math FB.

6.Add in the Math FB the Equations: p(0)+p(1) ; v(0)+v(1) : a(0)+a(1) for each Data-Channel (each wire has 3 Data-Channels)

7.Select Torque as the Output Data-Type.

To add Torques together from different cam-shafts, with all shafts are driven with gerars.

1.Add Lines

2.Add Gear-Pair to main drive shaft and one other cam-shaft

3.Add