Mitutoyo QM-Height QMH-600AX - Setting the Diameter of the Ball on the Tip of the Stylus

18
2 Basic Measuring Methods
No. 99MAF600B
2.1.2 Setting the Diameter of the Ball on
the Tip of the Stylus
The origin or the reference is set when contact is made with the bottom surface of the ball on the tip of
the stylus. The value displayed is the height of the position of the bottom surface of the ball (refer to left
diagram below).
Therefore, for measuring a height of the top surface (bottom left diagram), the correct value is displayed,
but for measuring a height of the bottom surface where contact is made with the top of the ball (bottom
right diagram), the diameter of the ball must be added.
s1
s1
The height of the measuring surface = the height of
the bottom of the ball
The height of the measuring surface = the height of
the bottom of the ball + the diameter of the ball
By measuring and setting the diameter of the ball on the tip of the
stylus with the supplied ball diameter calibration block in advance, the
bottom surface measurement will display a height value that automati-
cally accounts for the diameter of the ball.
• This procedure is necessary if you are using the product
forthersttimeorifyouarereplacingthestylus.
• To perform the setup using gauge blocks, use at least 20
mm of gauge blocks that have been wrung together. (Bot-
tom right diagram)
This section explains how to calculate and set the diameter of the ball
on the tip of the stylus by measuring two surfaces of the ball diameter
calibration block that are the same height.
A video about the setup can
be viewed.
Ball diameter calibration block
Examples of use
Gauge block
Examples of use