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Head operation

NOTE: Ensure that the lock lever is turned fully clockwise to the locked position, before taking gauge points.

To change the orientation of the probe

  • Unlock the head by turning the lock lever to the fully anti-clockwise position
  • Grip the body of the probe (avoid touching the stylus) and rotate the B-axis until the desired angle indication on the scale (in increments of 15°) is adjacent to the B-axis reference mark
  • Rotate the A-axis until the desired angle indication on the scale (in increments of 15°) is at the A-axis reference position
  • Lock the head by turning the lock lever to the fully clockwise position
  • Qualify the stylus tip(s) according to the CMM supplier's instructions
  • Change the orientation of the probe to the next desired position and qualify the stylus tip(s)
  • Repeat the qualification process for all desired orientations and stylus tips
  • Commence gauging, ensuring that the correct qualification data is recalled for each head position

Periodic requalification should be performed according to the following considerations:

  • CMM supplier's recommendations, particularly in respect of temperature changes
  • At the start of the working day or shift
  • After an accidental collision
  • After changing any measuring system component (except a prequalified TP20 module)
  • If the initial state is unknown or uncertain
MH8 - locking lever operation - labelled