Mitutoyo - Полный каталог инструмента - 2014 Английский язык

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	Contour Analysis Methods                                                	Data Combination

You can analyze the contour with one of the following two methods         Conventionally, if tracing a complete contour is prevented by stylus
after completing the measurement operation.                               traceable-angle restrictions then it has to be divided into several sections
                                                                          that are then measured and evaluated separately. This function avoids
Data processing section and analysis program                              this undesirable situation by combining the separate sections into one
The measured contour is input into the data processing section in real    contour by overlaying common elements (lines, points) onto each other.
time and a dedicated program performs the analysis using the mouse        With this function the complete contour can be displayed and various
and/or keyboard. The angle, radius, step, pitch and other data are        analyses performed in the usual way.
directly displayed as numerical values. Analysis combining coordinate
systems can be easily performed. The graph that goes through stylus       Data 1                                      Data 2
radius correction is output to the printer as the recorded profile.

	Tolerancing with Design Data                                                                   Data combination

Measured workpiece contour data can be compared with design data
in terms of actual and designed shapes rather than just analysis of
individual dimensions. In this technique each deviation of the measured
contour from the intended contour is displayed and recorded. Also,
data from one workpiece example can be processed so as to become
the master design data to which other workpieces are compared.
This function is particularly useful when the shape of a section greatly
affects product performance, or when its shape has an influence on the
relationship between mating or assembled parts.

	Best-Fitting                                                            	Measurement Examples

If there is a standard for surface profile data, tolerancing with design
data is performed according to the standard. If there is no standard, or
if tolerancing only with shape is desired, best-fitting between design
data and measurement data can be performed.

Before best-fit processing           After best-fit processing            Aspheric lens contour        Inner/outer ring contour of a bearing
                      Measured data                       Measured data

Design data                          Design data

The best-fit processing algorithm searches for deviations between         Internal gear teeth          Female thread form                               L
both sets of data and derives a coordinate system in which the sum
of squares of the deviations is a minimum when the measured data is
overlaid on the design data.

                                                                          Male thread form             Gauge contour

                                                                                                 L-44

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