See Add 3D Cam
Note: You must rebuild 3D-Cams when you open a model with 3D-Cams.
Edit the 3D-Cam:
The 3D-Cam dialog-box is now open.
There are three tabs in the 3D-Cam dialog-box:
There are two buttons at top of the 3D-Cam dialog-box:
See below for more details.
The 'Display' edits how the 3D-Cam shows in the graphic-area.
Solids* | Hoops | Rims check-boxes.
☑ Solids*: show or hide, 3D-Cam as a Solid
☑ Hoops: show or hide a hoop at each Point along each of the Rims - see Point
☑ Rims: show or hide the Rims along the 3D-Cam
* You MUST select the Solids check-box to see the 3D-Cam in the other Mechanism-Editors and the Model-Editor
•Use the Windows® color-picker to select a color of the 3D-Cam
•Use the slider to change the Transparency of the 3D-Cam.
Display Cam-Contour as...
When you show the 3D-Cam as Pressure Angle, the faces have a color-code.
•Red identifies a high Pressure-Angle
•Blue identifies a low Pressure-Angle
Minimum / Maximum
By default, the color-code scales to the maximum and minimum values of the Pressure-Angle
If you want to change the scale, use the Maximum Value and Minimum Value boxes.
Click the auto-scale button to reset to the maximum and minimum values again.
NOTE: From MD13.2, it is easier to save the 3D-Cam AS a STEP file with the Save button.
•to recalculate the 3D-Cam with updated parameters
•before you transfer the 3D-Cam to SolidWorks
•before you save the 3D-Cam
•to Save as STEP, TXT or SLDCRV file-types
You can open the STEP file in most 3D CAD programs.
See EXAMPLE 1 : Export the 3D-Cam as a STEP file, below.
TXT, SLDCRV, DAT
Each Rim is saved as a separate file.
The XYZ coordinates of each Rim are saved to a different file.
In the image to the left, there will be 20 separate files - one file for each Rim.
Rims along the Cam-Flanks (Purple), the Top and Bottom (Orange), and Points along each Rim.
In MechDesigner 3D-Cam dialog-box:
1.Click Rebuild button
2.Click Save button
3.Save the file-type as *.STP, and save the cam. E.g. CAM.STP
(Note: STP = STEP)
1.Open Cam.STP file in SolidWorks®
2.If asked, do: Import Diagnostics.
3.Close Import Diagnostics command
Depending on your SolidWorks® settings, you may need to:
a.Right-Click Cam.STP in the Feature Manager
b.In the contextual menu: Click Dissolve Feature and Yes, break the link
c.Right-Click - again - the CAM.STP in the Feature-Manager
d.In the contextual menu: Click Import Diagnostics
In the Import Diagnostics dialog
e.Click the Attempt to Heal All button, and then close the Import Diagnostics command.
When the Cam is healed:
4.Save Cam.STP as a SolidWorks® file-type. E.g. Cam.SLDPRT.
Open the Cam-Blank:
1.Open the prepared SolidWorks® part Cam-Blank.SLDPRT.
Insert the Cam.SLDPRT file (see Part 1)
1.Insert menu > Part... ; select the SolidWorks® CAM.SLDPRT file.
2.Click the Tick at the top of the SolidWorks feature manager.
Cam.SLDPRT becomes a feature and a Solid Body [Cam<imported>]
Ideally the orientation of the CAM.SLDPRT is correct relative to the Cam-Blank.SLDPRT
If not, I find it easier to move the sketch of the Cam-Blank to the correct Plane - experiment!
1.Insert menu > Feature > Combine:
a.Select Subtract as the Operation Type and,
b.In the Bodies to Combine box, select
i.Cam-Blank as the Main-Body and
ii.Cam<imported> as the Body to Subtract.
You should now see the Cam-Track in the Cam-Blank.
Note: It is possible that the Solid Body Cam<imported> is not in the correct place relative to Cam-Blank. Most usually, Cam<imported> and Cam-Blank.SLDPRT are defined on different Planes.
In this case, you can redefine the sketch-planes of Cam.Blank (easiest method). or move Cam<imported>.
To move Cam<imported>, do:
1.Insert menu > Feature > Move/Copy... and select Cam.SLDPRT as the body to move.
Not usually recommended - we recommend that you save the Cam as a STEP file - see EXAMPLE 1 - above.
In SolidWorks®, make sure the active document is a Part document.
STEP 1: Open SolidWorks®
STEP 2: Add a new Part
STEP 3: Save the new Part
STEP 4: Click the Send Cam Blank button
Before we can add the 3D-Cam in MechDesigner, we must add a sketch-loop (to represent the Rotational-section of the Cam-Blank) and a Line (to represent the rotation-axis of the Cam-Blank).
We send these sketch-elements to SOLIDWORKS to create the Cam-Blank feature
See Getting Started Tutorials 6C for more information.
In the image to the left, you can see in SOLIDWORKS:
•3DSketch1 which is the rotational-axis
•Revolve1 which is the feature that revolves the sketch-loop into the Solid.
STEP 5: Click the Send Cam Surfaces button
To make the transfer quicker: Show a drop-down menu in SolidWorks®. For example, show the help menu drop-down. We do not know why this makes the transfer faster, but it works.
MechDesigner controls SolidWorks to:
1.Add the Rims as Curve entities
2.Add four Surfaces features (or six if the Flank-Lengths are not from 0 – 360)
a.two Cam Flanks; a Floor, and a Top
b.plus two 'End-Caps' if the Flank-Lengths are not from 0 – 360.
3.Add the Knit-feature to knit the Surfaces
STEP 6: Click Remove Surfaces from Cam button
The 3D-Cam Surfaces Cut into the Cam Blank.
Wait! - you should now see the image to the left
If you see ONLY the CAM TRACK and not the Finished Cam (see image below)
STEP 7: Save the Part In SolidWorks®
In SolidWorks® :
1.Insert > Cut > With Surface
2.Select the Knitted 3D-Cam Surface - the last feature in the Feature Manager.
3.Edit the Surface Cut feature in SolidWorks® and click the Change Direction button.
4.Hide the Knitted Surface feature of the 3D-Cam.