KeevoDrive® HighAcc 20mm - Type 1

KeevoDrive®

HighAcc 20mm - Type 1

Technical Supply Specifications

Features

  • Zero backlash at ultra high resolution
  • Integrated flexure hinghes
  • Robust control without feedback system
  • Connecting cable assembled
  • Step with in the range of single nm

Description

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.

Technical Parameter

Global System
Number Parameter Symbol Value Hint
P-003
Ratioi1000 : 1
P-004
Self-locking yes  
P-005
Max. travel ranges40 μm 
P-015
Backlash 0 μm 
P-016
Rated forceF9 N 
P-017
Peak forceF19 N 
P-018
Momentary peak forceF47 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 stiffnessc69.13 N/μm 
P-038
Axial stiffnessc40 N/μm 
P-039
Max. radial load on output shaft (non-operating, constant load)F435 N 
P-040
Max. radial load on output shaft (non-operating, impulsive load)F145 N 
P-041
Max. radial load on output shaft (operating, constant load)F98 N 
P-042
Max. radial load on output shaft (operating, impulsive load)F98 N 
P-043
Max. axial load on output shaft (non-operating, constantF150 N 
P-044
Max. axial load on output shaft (non-operating, impulsive load)F50 N 
P-045
Max. axial load on output shaft (operating, constant load)F380 N 
P-046
Max. axial load on output shaft (operating, impulsive load)F127 N 
P-055
Moment of inertiaI955 * 10-4 gcm2 
P-056
Weightm54 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)T130 °C 
P-060
Max. permissible ambient temperature (operating)T70 °C 
Motor data: Schrittmotor AM 1020-2R-A0.25
Number Parameter Symbol Value Hint
P-100Type of motor Stepper  
P-102
Maximum speed of motorn21000 rpm 
P-103
Resonance frequency of motorf 140 Hz 
P-105
Holding torque of motor (unpowered)T0.2 mNm 
P-109
Rated current of motorI250 mA 
P-111
Rated voltage of motorU2 V 
P-112
Phase resistance of motorR8 ohm 
P-113
Inductance of motorL2.4 mH 
P-114
Amplitude BEMF of motorU0.6 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 motort 0.32 ms 
P-118
Max. coil temperature of motorT130 °C 
P-119
Thermal resistance of motor between coil and housingRth13.9 K/W 
P-120
Thermal resistance of motor between housing and airRth253.8 K/W 
P-121
Thermal time constant of the coil of the motorτw13200 ms 
P-122
Thermal time constant of the housing of the motorτw2200000 ms 
P-123
Insulation voltage of motorU200 V 
Excenter data
Number Parameter Symbol Value Hint
P-501
Eccentricity 1000 μm 
P-504Max. radial load on eccentric bearing (non-operating, constant load)F19 N 
P-505Max. radial load on eccentric bearing (non-operating, impulsive load)F19 N 
P-506Max. radial load on eccentric bearing (operating, constant load)F19 N 
P-507Max. radial load on eccentric bearing (operating, impulsive load)F19 N 
P-508Max. axial load on eccentric bearing (non-operating, constant load)F150 N 
P-509Max. axial load on eccentric bearing (non-operating, impulsive load)F50 N 
P-510Max. axial load on eccentric bearing (operating, constant load)F380 N 
P-511Max. axial load on eccentric bearing (operating, impulsive load)F127 N 
P-513Eccentricity error 20 μm 
Data flexure hinges
Number Parameter Symbol Value Hint
P-701
Flexure hinge ratioi50  
P-702
Max. load on flexure hingesF10 N 
P-703
Angular position of eccentric at min. positionα 0 ° 
P-704
Angular position of eccentric at max. positionα 360 ° 
Material information
Number Parameter Symbol Value Hint
P-900
RoHS compliant yes  
P-901Lubrication of output bearing gearbox Longtime PD2  
P-902Lubrication of input bearing gearbox Fomblin GRM60  
P-903Lubrication of gear component set Molykote BR 2 plus  
P-904Lubrication of bearing motor Synthetic light ester oil  
P-907Lubrication of eccentric bearing Longtime PD2  
P-908Material of gear component set NiFe  
P-909Material of output bearing gearbox 1.4108 DIN EN  
P-910Material of input bearing gearbox 1.4108 DIN EN  
P-911Material of bearing motor Stainless steel  
P-912Material of gearbox output side 1.4305 DIN EN  
P-914Material of motor housing Anodized aluminum  
P-915Material of eccentric bearing 1.4108 DIN EN  
P-005 - Travel range
P-008 - Unidirectional repeatability
P-009 - Bidirectional repeatability
P-012 - Resolution
P-016 - Operating force characteristic
P-502 - Speed characteristic
P-512 - Max. external radial force

Technical Drawing

KeevoDrive® HighAcc 20mm - Type 1
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