Summary of this Step:

In this step, you will transfer a Cam to SolidWorks.

1.Make sure you have the correct SOLIDWORKS Type Library in your MechDesigner installation path
2.Open a Part or add a new Part in SOLIDWORKS.
3.Use the Cam-Coordinates dialog-box to send the Cam to SolidWorks from MechDesigner.

tog_minus1: SOLIDWORKS Type Libraries

A Type-Library file in the MechDesigner installation path must match the SOLIDWORKS® release to which you want to transfer the cam.

This is automatically detected and set the correct type-libraries are

tog_minus2: Cam-Coordinates dialog box


If the Cam-Coordinates dialog-box is not open:

STEP 1: Double-click the Cam-Data FB in the graphic-area

If the Cam-Coordinates dialog is not linked to a Cam, then:

STEP 2: Click a 2D-Cam in the graphic area or Assembly-Tree.
STEP 3: Click the Traffic-Light icon

When you click the Traffic-Light in this dialog-box MechDesigner calculates the Cam-Coordinates with the active settings. Experiment with the icons to understand.

See Cam-Coordinates dialog-box for more details. EXPERIMENT.

If you transfer the Cam to SolidWorks, it is defined there with the Curve feature, which will then be defined as a Spline when you 'convert-entities'.

There are some limitations with the Curve feature:

The Curve [Cam] cannot cross at any place, or 'self-interfere'.
If there is a 'step-in-velocity' [or position], then it is possible there will be a 'kink' in the Spline.
YOU must be careful to make sure MotionDesigner is continuous in at least Position and Velocity.
You would usually want it be continuous in Acceleration also.

tog_minus3: Open SOLIDWORKS


1.Start SolidWorks®
2.Open a Part, or add a new Part and save it.


4.Arrange MechDesigner and SolidWorks so that you can see the two applications.

Make sure only ONE SolidWorks application is running.

tog_minus4: Select CAD Transfer in MechDesigner

The 2D Cam Track in SolidWorks from MechDesigner.

In the Cam-Coordinates dialog-box [in MechDesigner again]

1.Click 'Send to CAD', [the SolidWorks icon next to the Rebuild button]
2.I find that if I click the SolidWorks application, then the Cam shows more quickly.

MechDesigner draws three 'Curves' on the Front Plane of the SolidWorks Part. The three curves features are:

2D-Cam-Data [which is the Cam1 or Cam 2 [external or internal]
X-axis : Two Point in the curve, 0,0 and 100,0
Y-axis : Two Point in the curve, 0,0 and 50,0

If required: to send the 'other' Cam:

3.Click the 'other cam' in the Cam-Coordinates dialog-box and 'Send to CAD' again.
4.Do again for the Pitch-Circle, if required.

tog_minus5: Edit the Model in SOLIDWORKS with standard sketch and feature tools

The Complete Cam in SolidWorks from MechDesigner.

In SolidWorks, for example, if you want to make a 2D-Groove or Track Cam:

1.Start a sketch on the Front-Plane.
2.Add a Circle. Make its diameter greater than the radius of the larger Cam.
3.Use Insert > Base/Boss > Extrude to extrude the circle to the full thickness of the Cam part.
4.Add a sketch to the face of the Cam.
5.Click a 2D-Cam Curve feature
6.Use Tools > Sketch Tools > Convert Entities.
7.Do 1-3 again for the other 2D-Cam.
8.Use Insert > Cut > Extrude. to extrude a cam groove into the Cam blank.
9.Cut a Hole through the Centre for a Shaft, key-way, etc.

tog_minus6: Save the Cam as a STEP[AP203] file for manufacture

SOLIDWORKS Export Options interface.

SOLIDWORKS Export Options interface.

In SolidWorks, to save the file as a STEP file ready for a CAM program, you must make sure the 'Export 3D Curve features' check-box is checked.

In SolidWorks:

1.Click File > Save as... and enter a file-name for the cam

In the 'Save as type:' drop-down box,

3.Click STEP AP203 file type
4.Add a description
5.Click the Options button, at the bottom of the File > Save as... dialog

In the Export Options dialog

5.Make sure the 'Export 3D Curve features' check-box is checked - see left image
6.Click the OK button to close the Export Options dialog
7.Click OK button to save the cam as a STEP file.

Tutorial and Reference Help Files for MechDesigner and MotionDesigner 13.2 + © Machine, Mechanism, Motion and Cam Design Software by PSMotion Ltd