Point - 3D

Command Activation

1,2,3,4,5,6,7,8,9 Measure→Point PtToolbar.jpg (6893 bytes)
Keyboard Main Menu Toolbar

 

Feature measurement point types
1D Point +/- X, Y and Z Reported Directions. Cartesian only.
Point - 2D
IR/OR 2D Points		 Reported in PCS Base Planes XY, YZ, ZX. Can be Cartesian or Polar. Special cases include Inside and Outside Polar Points.
3D Points
IR/OR 3D Points		 Reported as XYZ. Can be Cartesian or Polar. Special cases include Inside and Outside Polar Points. 3D Points are not compensated for the probe radius when using a standard electronic touch probe. IR and OR 3D Points are compensated one probe radius from the PCS Origin.
Vector Points Surface 3D Points. Compensated by one probe radius along the defined IJK surface vector. Vector Points can be created and measured using a ASCII import table.

Definition

Points are dimensionless locations is 3D space. Points have no size. The location of a point is specified by its X, Y, and Z coordinate in a particular coordinate system. There are many points that Geomet support. These include 1D, 2D and 3D points.

Measured points consist of 1D, 2D and 3D style geometric elements. keyboard access to these points are done through the number keypad, see table 1.

Keystroke 1D Point 2D Point 3D Point
1 -Z    
2 -Y    
3 + 2   XY IR  
3 + 4   ZX IR  
3 + 6   YZ IR  
3 + 9     3D IR
4 -X    
5 + 2   XY  
5 + 4   ZX  
5 + 6   YZ  
5 + 7     Vector Point
5 + 9     3D
6 +X    
7 + 2   XY OR  
7 + 4   ZX OR  
7 + 6   YZ OR  
7 + 9     3D OR
8 +Z    
9 +Y    

IR = Inside Radius / OR = Outside Radius
table 1, Keyboard Access

3D Points

Definition

The 3D Point feature reports the current PCS location of the center of the ball stylus used in the measurement. It is useful in conjunction with a hard ball stylus to establish a point on the axis of an ID cone. An example is to establish the centerline of a turned part using two 3D Points, one at each end in the conical shaped turning datums used by the head and tail stock.

To measure 3D Point Features, press the 3D Point key, < 5 + 9> from the number pad. and begin your measurement.

Tolerance of 3D Points is available in Cartesian, Polar or RFS Positional Tolerance formats.

IR/OR 3D Points

Definition

The IR (Inside Radial) and OR (Outside Radial) Point features allows 3D, ball radius compensated probing of spherical surfaces. The probe vector is determined as a vector from the current PCS origin through the ball center of the stylus. Inside Radial features are compensated by adding one radius along this vector, Outside Radial subtracts one probe radius.

These features are ideal for measuring extremely large spherical surfaces that only offer a small segment to capture data points on. Translate your PCS origin to the centroid of the feature and capture radial points along the surface.

Tolerance of 3D Points is available in Cartesian, Polar or RFS Positional Tolerance formats.

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