Views, Planes and WCS

Views, Planes and WCS


Work Coordinate System (WCS) is the active coordinate system in use by Mastercam at any given time.  The WCS tells the software how your part is positioned or oriented in the machine.  The WCS contains the orientation of the XYZ axis plus the location of the zero point (the origin).

Note: Changing the WCS doesn’t create a rotary move at the beginning of the toolpath.

Gview (geometric view) is the perspective from which you are looking at the part in the graphics window oriented relative to the WCS.  Comprised of a 2D plane with an origin and specific orientation.


Gview orientation



Orientation diagram

Tplane is the plane that is normal to your tool axis.  Tplanes are used only when creating toolpaths.  They determine the tool orientation.  In most cases your Tplane will be the same as your Cplane (most common exception would be mill/turn operations).  A typical use of Tplane would be to create a rotary motion code when you post your toolpath so that the tool axis or fixture will move to properly position the part.


Cplane is the plane in which your geometry is created.  The Cplane is independent of the Gview.  For example you can look at your part in an Isometric View while drawing in the Front Cplane.


WCS Options
A.There are 7 standard plane (Graphic views) Pre defined in Mastercam.
B. This command lets you select a view from a catalogue of saved views, including any custom views.
C. Use these commands to create new views from part entities or by manipulating other views.
D. Plane Manager



Mastercam maintains a catalog of views that have been saved in the current part. You can see these views by selecting Plane Manager.


Plane Manager


An example of using Cplane/Tplane rotation on a vertical mill with a 4th axis.





The Work coordinate system (WCS) would remain at Top

The Tool plane (Tplane) and Construction plane (Cplane) would be set to Front.  This will create an A axis move in the posted NC code.


WCS and Tplane



N100 G20

N110 G0 G17 G40 G49 G80 G90

N120 T01 M6

N130 G0 G90 G54 X.2763 Y1.1012 A-270. S2852 M3 (FORCES AN “A” MOVE)

N140 G43 H01 Z4.

N150 Z3.2

N160 G1 Z3. F6.16

N170 Y1.4137



See all How-To’s, Tips & Tricks and FAQ’s here!

Sandy McClintock

Presented by Sandy McClintock, Applications Support Specialist

Do you have a topic or question you would like to see us cover? Let us know in the comment section below!

Join the Conversation:

Follow us on Twitter, Facebook or LinkedIn and Subscribe for news & exclusive offers.


Tags: , , , , ,

Comments are closed.

Discover Mastercam with a customized Demo