SM25 modules & SH25 stylus holders – repeatability when changing using FCR25

Repeatability of changing using FCR25

Description

Module/body joint

For this test the module was fitted with the longest permissible stylus for a worst case scenario. The repeatability of the sphere centre position, using FCR25 to change modules, is shown below:

 SM25-1SM25-2SM25-3
X (±2σ) ± 0.48 µm± 0.42 µm± 0.60 µm
Y (±2σ)± 1.38 µm± 0.88 µm± 1.52 µm
Z (±2σ) ± 0.94 µm± 0.72 µm± 1.40 µm

 

Module/Stylus Holder

The repeatability of the stylus holder joints has been estimated as the repeatability of the centre position of a sphere measured with 5 points.

 SH25-1SH25-2SH25-3
 X (±2σ)± 0.32 µm± 0.34 µm± 0.45 µm
Y (±2σ)± 0.34 µm± 0.38 µm± 0.9 µm
Z (±2σ)± 0.45 µm± 0.39 µm± 0.54 µm

Requirements

No additional requirements.

See also

N/A