Renishaw SP25-1 Bedienungsanleitung Seite 50

SP25M user's guide
www.renishaw.com
SP25M cranked stylus carrying capability for
typical stylus combinations
As well as straight styli, SP25M has the ability to carry cranked styli when using the standard range of SM25 scanning modules. For optimum
metrology and when larger offsets are required, it is recommended that the SH25-3A, SH25-4A and SH25-5A modules are used.
For SH25-1, SH25-2 and SH25-2A it is mandatory that a 20 mm or longer stylus extension is used between the SH25 stylus holder and the
crank centre to give the correct crank down distance from the stylus holder to the crank centre.
When using SH25-3, SH25-4, SH25-3A and SH25-4A, the crank centre may either be mounted directly to the stylus holder or to a stylus
extension between the stylus holder and the crank centre.
For SM25-1, SM25-2, SM25-3 and SM25-4, a straight downward pointing stylus can be added to the crank centre to continue the projection
down from the stylus holder. This is providing that the maximum overall stylus length and mass does not exceed the recommended limits for
the particular module being used.
For 3D scanning with SM25-1 and SM25-2, the maximum crank out distance is 28 mm and is measured from the cranked (non straight)
stylus tip to the centre of the crank centre. For 3D scanning with SM25-3 and SM25-4, the maximum crank out distance is 58 mm.
Multiple cranked styli may be used providing the overall mass of the crank centre and stylus does not exceed the recommended limits for the
particular module being used.
Please refer to the Renishaw stylus catalogue for the full range of cranked and star stylus configurations available. It is recommended that a
one piece star stylus is used whenever possible to minimise the mass of the assembly. Greater flexibility is offered however by configuring a
crank centre with one or more cranked styli.
Module / stylus 'Crank down'
holder distance using
an extension*
between the
stylus holder
and the crank
centre
SM25-1 / 25 mm**
SH25-1
SM25-1 / 55 mm**
SH25-1
SM25-2 / 55 mm
SH25-2
SM25-2 / 85 mm
SH25-2
Issued 06 2022
3D scanning 2D scanning and
Maximum point taking
'crank out' Maximum
distance when 'crank out'
measured to tip distance when
of crank (star) measured to tip
stylus of crank (star)
stylus
28 mm** 58 mm**
28 mm** 58 mm**
28 mm 83 mm
28 mm 83 mm
Maximum Maximum
'down' stylus permissible
(same as mass of crank
'effective stylus (star) centre
reach' - see plus all styli
straight styli)
50 mm 9 g***
50 mm 9 g****
105 mm 6 g***
105 mm 7 g****
Maximum
operating stylus
tip deflection
for above in any
orientation
0.4 mm
0.4 mm
0.4 mm
0.4 mm
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