L-9517-9563-06-A_Data_sheet_ATOM_en.pdf - 第13页

13 A TOM miniature encoder system RCDM r otar y disc installation drawing Dimensions and tolerances in mm 10.25 ± ‘F’ Set-up LED Alignment band Reference mark D3 1 D2 1 D1 1 0.22 (Roll tol. ±1°) ‘A’ ± ‘E’ 0.36 (Pitch tol…

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12 ATOM miniature encoder system
RCLC technical specications
Material Soda-lime glass spar tted with a self-adhesive backing tape
Form (H × W) 1.1mm × 6.35mm (including adhesive)
Scale pitch 20μm and 40μm
Datum xing Fillet of adhesive (A-9531-0342) on one side of the scale
Reference mark Auto-phase optical reference mark repeatable to unit of resolution throughout specied
speed and temperature range.
Either mid or one end of travel, determined by orientation of the readhead.
Accuracy (at 20°C) ±3µm
Coefcient of thermal expansion ~8µm/m/°C
Mass 13.9g/m
Overall length (mm) 10 18 30 55 80 100 105 130
Measuring length (mm) 7 15 27 52 77 97 102 127
RCLC scale length
13 ATOM miniature encoder system
RCDM rotary disc installation drawing
Dimensions and tolerances in mm
10.25 ± ‘F’
Set-up LED
Alignment band
Reference mark
D3
1
D2
1
D1
1
0.22
(Roll tol. ±1°)
‘A’ ± ‘E’
0.36
(Pitch tol. ±1°)
For detailed information see the ATOM
™
rotary encoder systems
installation guide (Renishaw partno.M-9693-9717).
2.3 ±0.1
Glass disc
Black screen printing on reverse
of disc underneath incremental
and reference track.
Forward
direction of disc
(increasingcount)
FPC cable
Centre of alignment band
Centre of alignment band
Calibration rideheight :
2.5±0.08 (40 µm version)
2.5±0.04 (20 µm version)
Operating rideheight:
2.5±0.11 (40 µm version)
2.5 ±0.055 (20 µm version)
1
The dimensions D1, D2 and D3 are listed on the following page.
14 ATOM miniature encoder system
RCDM technical specications
Material Soda-lime glass
Form 2.3mm thick
Reference mark Single reference mark
Coefcient of thermal expansion ~8µm/m/°C
Nominal outer diameter (mm) 40μm 17, 20, 25, 27, 30 ,36, 50, 56, 68, 108
20μm 30, 36, 50, 56, 68, 108
Disc size (mm) 17 20 25 27 30 36 50 56 68 108
Graduation accuracy (arc seconds) 15.81 12.95 9.82 9 7.91 6.49 4.5 3.95 3.24 2.78
1
Special disc sizes available on request.
Disc size
1
(mm)
Line count
D1
(mm)
D2
(mm)
D3
(mm)
Optical
diameter
(mm)
A
(mm)
Radial tolerance
E(mm)
Longitudinal
tolerance F (mm)
20 µm
version
40 µm
version
20 µm
version
40 µm
version
20 µm
version
40 µm
version
17 - 1 024 3.275 8.1 16.9 13.04 10.63 - 0.1 - 0.1
20 - 1 250 3.275 11 19.9 15.92 12.07 - 0.1 - 0.1
25 - 1 650 6.46 16.1 24.9 21.01 14.62 - 0.125 - 0.075
27 - 1 800 9.625 18 26.9 22.92 15.57 - 0.125 - 0.075
30 4 096 2 048 12.8 21.15 29.9 26.08 17.15 0.1 0.125 0.075 0.125
36 5 000 2 500 12.8 26.9 35.9 31.83 20.03 0.125 0.175 0.075 0.2
50 7 200 3 600 25.5 40.9 49.9 45.84 27.03 0.125 0.2 0.075 0.2
56 8 192 4 096 25.5 47.25 55.9 52.15 30.19 0.125 0.2 0.1 0.2
68 10 000 5 000 25.5 58.55 67.9 63.66 35.94 0.15 0.2 0.125 0.3
108 16 384 8 192 50.9 99.2 107.9 104.3 56.26 0.2 0.2 0.225 0.3
Graduation accuracy
Dimensions