CMM Inspection 2

Be able to answer questions about this lab in the form of a quiz.

Start the CMM system as described in Lab 1. (Use the same probe as Lab 1)

Start the machine and begin a new file.  Name your file YourUUID_4476_2

Enter Guess mode.

Use the angled workpiece.  Align it with the table as shown:

Probe the three single points

• Probe one point by probing straight down (create a point)
  • Name this point PT1
• Probe one point by probing horizontally (create a point)
  • Name this point PT2
• Probe one point by probing normal to the surface (create a point)
  • Name this point PT1

• Record the vectors components of these three points, e.g.,  <0,0,1>
  • PT1 <______, ________, _______>
  • PT2 <______, ________, _______>
  • PT3<______, ________, _______>
• Explain how probe compensation affects the vectors of POINTS.

Probe the angled plane at its extremities.

• Create a plane (guess mode)
• Name the plane RAMP_PLANE.
• Edit the name in the program, then use F9 to edit the plane.
• Look at the “hits” that define the plane.
• What do you notice about each hit point’s vector components?
  • The components are:_____________________________
• How does this affect probe compensation?

Set the workplane to align with the Z-axis positive.

• Probe the line segment in four points, and create a line.
  • Probe to the same side of the slot for all four points.

• Note: Lines are 2D.  Notice the line that is created in the graphics window.
• Note: The line x, y, and z is the centroid of the points selected.
• Observe the vector created.
• Probe the inside of the CIRCLE using 4 points (approximately at the quadrants) and create using guess mode.

• Explain how the workplane affects geometry creation.

Set the workplane to align with the X-axis positive.

• Probe the line segment in four points, and create a line
• Notice the line that is created in the graphics window.
• Is this line the same as the one created in the Z-axis positive workplane?
  • Explain:

Set the workplane to align with the Y-axis positive.

• Probe the line segment in four points, and create a line
• Notice the line that is created in the graphics window.
• Is this line the same as the one created in the Z-axis positive workplane?
  • Explain:

Change workplane to RAMP_PLANE

• Probe the line segment in four points, and create a line
• Observe the line that is created in the graphics window. How is this line different?
• Probe the Circle using 8 points and create using guess mode.
• Observe whether the circle lies on the RAMP PLANE or not.

Set the metal sphere in the hole on the ramp plane as shown:

• Probe the sphere and create a sphere.
• Does the workplane matter when creating a sphere?
• Why or why not?
• What is the name of the error that would occur if you probed too low on the sphere?

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