KeevoDrive® HighAcc 20mm – Type 1
The KeevoDrive® HighAcc 20mm – type 1 micro positioning system combines an eccentric input system with flexure hinge kinematics, thereby allowing movements to be realised in the single-digit nanometre range.
The flexure hinge kinematics consists, on the one hand, of a lever system for further reducing the movement and, on the other, of linear guides for connecting the application.
The system can easily be operated in an open loop control, as it is driven by a stepper motor with 20 steps per rotation.
At the core of this micro system is a zero-backlash MaalonDrive® gear with a reduction ratio of 1000:1.
Benefits
1) Robust control without feedback system
2) Connecting cable assembled
3) Zero backlash at ultra high resolution
4) Integrated flexure hinghes
5) Step with in the range of single nm
Technical parameters
The values shown are based on calculations and measurement procedures carried out by Micromotion GmbH, which are carried out according to the current state of the art. Our definitions can be found at www.micromotion-drives.com. For further information please contact sales@micromotion.de.
Nr.
Parameter
Symbol
Value
Properties
P-003
Ratio
i
1000 : 1
P-004
Self-locking
ja
P-005
Max. travel range
s
40 μm
P-015
Backlash
0 μm
P-016
Rated force
F
9 N
P-017
Peak force
F
19 N
P-018
Momentary peak force
F
47 N
P-034
Lifetime for rated operation
1000 h
P-035
Radial backlash output shaft
0 μm
P-036
Axial backlash output shaft
0 μm
P-037
Radial stiffness
c
69.13 N/μm
P-038
Axial stiffness
c
40 N/μm
P-039
Max. radial load on output shaft (non-operating, constant load)
F
435 N
P-040
Max. radial load on output shaft (non-operating, impulsive load)
F
145 N
P-041
Max. radial load on output shaft (operating, constant load)
F
98 N
P-042
Max. radial load on output shaft (operating, impulsive load)
F
98 N
P-043
Max. axial load on output shaft (non-operating, constant
F
150 N
P-044
Max. axial load on output shaft (non-operating, impulsive load)
F
50 N
P-045
Max. axial load on output shaft (operating, constant load)
F
380 N
P-046
Max. axial load on output shaft (operating, impulsive load)
F
127 N
P-055
Moment of inertia
I
955 * 10-4 gcm2
P-056
Weight
m
54 g
P-057
Min. permissible ambient temperature (non-operating)
T
-35 °C
P-058
Min. permissible ambient temperature (operating)
T
-20 °C
P-059
Max. permissible ambient temperature (non-operating)
T
130 °C
P-060
Max. permissible ambient temperature (operating)
T
70 °C
Motor data: Stepper AM 1020-2R-A0.25
P-100
Motortype
Stepper
P-102
Maximum speed of motor
n
21000 rpm
P-103
Resonance frequency of motor
f
140 Hz
P-105
Holding torque of motor (unpowered)
T
0.2 mNm
P-109
Rated current of motor
I
250 mA
P-111
Rated voltage of motor
U
2 V
P-112
Phase resistance of motor
R
8 ohm
P-113
Inductance of motor
L
2.4 mH
P-114
Amplitude BEMF of motor
U
0.6 mV/rpm
P-115
Full step angle of motor
18 °
P-116
Angular accuracy of step of motor
±1.8 °
P-117
Electrical time constant of motor
t
0.32 ms
P-118
Max. coil temperature of motor
T
130 °C
P-119
Thermal resistance of motor between coil and housing
Rth1
3.9 K/W
P-120
Thermal resistance of motor between housing and air
Rth2
53.8 K/W
P-121
Thermal time constant of the coil of the motor
τw1
3200 ms
P-122
Thermal time constant of the housing of the motor
τw2
200000 ms
P-123
Insulation voltage of motor
U
200 V
Excenter data
P-501
Eccentricity
1000 μm
P-504
Max. radial load on eccentric bearing (non-operating, constant load)
F
19 N
P-505
Max. radial load on eccentric bearing (non-operating, impulsive load)
F
19 N
P-506
Max. radial load on eccentric bearing (operating, constant load)
F
19 N
P-507
Max. radial load on eccentric bearing (operating, impulsive load)
F
19 N
P-508
Max. axial load on eccentric bearing (non-operating, constant load)
F
150 N
P-509
Max. axial load on eccentric bearing (non-operating, impulsive load)
F
50 N
P-510
Max. axial load on eccentric bearing (operating, constant load)
F
380 N
P-511
Max. axial load on eccentric bearing (operating, impulsive load)
F
127 N
P-513
Eccentricity error
20 μm
Data flexure hinges
P-701
Flexure hinge ratio
i
50
P-702
Max. load on flexure hinges
F
10 N
P-703
Angular position of eccentric at min. position
α
0 °
P-704
Angular position of eccentric at max. position
α
360 °
Material information
P-900
RoHS compliant
ja
P-901
Lubrication of output bearing gearbox
Longtime PD2
P-902
Lubrication of input bearing gearbox
Fomblin GRM60
P-903
Lubrication of gear component set
Molykote BR 2 plus
P-904
Lubrication of bearing motor
Synthetic light ester oil
P-907
Lubrication of eccentric bearing
Longtime PD2
P-908
Material of gear component set
NiFe
P-909
Material of output bearing gearbox
1.4108 DIN EN
P-910
Material of input bearing gearbox
1.4108 DIN EN
P-911
Material of bearing motor
Stainless steel
P-912
Material of gearbox output side
1.4305 DIN EN
P-914
Material of motor housing
Anodized aluminum
P-915
Material of eccentric bearing
1.4108 DIN EN
Graphs
P-512
P-012
P-502
P-016
P-005
P-008
P-009
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