Summary of the Step

We add Coincident Constraints so that the length of the sketch-loop at its base is always equal to the length of the Part.

tog_minusAdd Coincident relationships

GA-AddCoincident-2Pts

Icon-SE-Coincident Constraints toolbar > Add Coincident Red-14-3 (right of graphic-area)

STEP 1: Click Constraints toolbar >Add CoincidentRed-14-3
STEP 2: Click the centre-PointRed-14-2 of the Arc to the right of the sketch

See image

STEP 3: Click the end-PointRed-14-1b of the CAD-LineRed-14-2

GA-AddCoincident-2PtsB

 

Notice, in the image above, that the Points at the centre of ArcsRed-14-2 (and Circles, also) are small '+', and not an 'o'.

When the two Points are Coincident, they look like: 'CirclePlus'.

When the two Points are Merged, it looks like: '+'.

GA-AddCoincident-C

Do Add Coincident Constraint with the other two arcs in the sketch-loop.

Coincident: Point to Point

STEP 4: Click the centre-point of the Arc near to the start-Point of the CAD-Line and the start-Point of the CAD-Line

Coincident: Point to Line, X-axis or Y-axis

STEP 5: Click the centre-point of the Arc and the vertical Y-axis

The centre-point of each Arc is coincident with the start-Point of the CAD-Line and the Y-axis.

Tutorials and Reference Help Files for MechDesigner and MotionDesigner 14.2 + © Machine, Cam, Mechanism, and Motion Design Software by PSMotion Ltd