19
REPLACEMENT
OF
PARTS
AND
COMPONENTS
3
3.1.4 DISASSEMBLY OF NOSEPIECE/ARMSET
NOSEPIECE:
NOSEPIECE:
NOSEPIECE:
NOSEPIECE:
NOSEPIECE:
The nosepiece (see Fig. 1) is the guiding element that makes the measurement
independent from the operator’s manual skill. Despite its considerable hardness, it is
subject to wear, therefore it can be removed and replaced with a new or reconditioned
one.
MEASURING ARMSET
MEASURING ARMSET
MEASURING ARMSET
MEASURING ARMSET
MEASURING ARMSET
The measuring armset is the bore gauge measuring element, transducing the mechanical
movement of the contacts for the display device. The versions developed are basically
2: one with FINGERS (measuring range from
≥
3 mm to < 26 mm), and one with
PARALLELOGRAM (measuring range, from
≥
26 mm to
≤
300 mm). Fig. 2 shows the
models in relation to their measuring range. Fig. 3 shows, as example, the measuring
armset composition for a range between 9,5 and 26.
A. Armset
B. Rod
C. Spring
D. Sliding bushing
E. Nosepiece locking nut
NOTE
:
It is possible to perform the retooling of the bore gauge by replacing the nosepiece and
contacts (unless the latter cannot be repositioned), provided that the nominal diameter of
the nosepiece is compatible with the measuring range of the measuring armset (see Fig. 2).
3
1
2
3-Ø<5,5 5,5-Ø<7,5 7,5-Ø<9,5 9,5-Ø<26
26-Ø<300
B
A
C
D
E
ARMSETS
PARALLELO-
GRAM
Содержание M1 Star MBG
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