Voice Coil Positioning Stages

Product Info:

APPROPRIATE VOICE COIL APPLICATION SPECIFICATIONS

Travel	0.04 - 2 inches	[1 - 50 mm]
Acceleration	0.1 - 20 G's	0.1 - 20 G's
Peak Force	0.75 - 300 lbs	[3 - 1333N]
Continuous Force	0.25 - 100 lbs	[1 - 444 N]
Resolution	.000004" or .0005"	[0.1 – 12 micron]

The Voice Coil Positioning Stage is a compact, small footprint positioning stage. It is ideal for closed loop positioning applications with a short stroke where intricate position, velocity, and acceleration control is necessary.

Their compact size allows them to fit into small spaces. They have very low electrical and mechanical time constants. The low moving mass allows for high accelerations of light payloads.

The ironless core coil assembly has no magnetic attractive force to the stationary magnet assembly, which reduces the load on the bearing system, which increases the life of the bearing. There are no magnetic drag forces (hysteresis), which allows for higher accelerations.

These actuators are wound in such a way that no commutation is required for motion to occur. Electrical devices such as Hall Effects are not necessary. The result is a much simpler and more reliable system.

The VCS positioning stage incorporates the latest in linear motion technology :

Motors: non-commutated moving coil (NCC) or moving magnet (NCM) voice coil motors.
Bearings: Linear guidance and stiffness is achieved by using high precision ball slides or cross roller slides. Other types of bearings and bushings are available depending on the application.
Feedback: Non-contact optical or magnetic linear encoders with a center reference mark for homing. Typical encoder output is A and B square wave signals but sinusoidal output is available as an option. Analog feedback is available via LVDT or Force Transducer.
Limit Switches: Soft limits are typically used and monitored by the controller. But, if needed, end of travel limit switches may be included at both ends of the stroke. The switches can be either active high/low (5V to 24V). The limit switches can be used to shut down the amplifier or to signal the controller that an error has occurred. The limit switches can be an integral part of the encoder or can be mounted separately if required.
Hard Stops: Hard stops are incorporated into the ends of the stage to prevent over travel damage in the event of servo system failure.

Advantages:

Small Size, High Force to Weight Ratio
High Accelerations
No Cogging or Commutation
Custom Designs with Quick Turnaround Times
High Flux Density Neodymium Magnets are Used
Low Cost Economical Solution

Applications:

Mirror Tilt and Focusing
Z Axis for Pick and Place Equipment
Medical Diagnostic Probes and Laser Beam Steering
Vision Inspection
Miniature Position Control
Clean room

Operating Info:

Required Electronics:
Because of the very low inductance of the actuator, a DC linear servo amplifier is required to provide power to the actuator. If a PWM amplifier is used, it is recommended to have a switching frequency of 50kHz or higher. A linear power supply is also recommended for better performance and noise reduction.

Environmental Considerations:
The stage is a precision device with sensitive components and should not be mounted in an environment that is wet or excessively dirty. The optical encoder scale is open and it should be kept free of debris in order to operate properly. The magnetic encoder scale should be kept away from any ferrous or magnetic materials. The magnetic assembly should not be placed in an area where loose steel particles can be drawn into the magnetic gap. The stage should not be mounted in an environment with ambient temperatures >50ºC.

Mounting:
The stage should be mounted to a flat and stiff surface. Counter bored thru holes are present in the base to allow for the mounting of the stage to the customers system. The moving slide assembly has threaded holes for attaching the payload. Custom mounting holes are available if the customer desires so. The stage may be mounted in any orientation. When mounting the stage with the slide moving vertically, it should be noted that the stage will be required to generate additional force due to gravity and that the moving slide will drop down to the bottom hard stop when power fails.

Maintenance:
The ball bearing guides in the stage should be periodically lubricated with the manufacturers recommended grease. The open encoder scale should be wiped down occasionally to clear it of any dust or particles to ensure trouble free operation.

Ordering Info:

Stages can be ordered for any stroke up to 2 inches and any continuous force up to 100 lbs. The stages are built as the orders are placed, they are not stocked, as each customer requirement is different.

It should be noted that for both types of actuators (NCC & NCM) used for these stages, longer strokes are available but the efficiency or motor constant (Km) decreases as the stroke increases. This is due to the fact that the motor constant is inversely proportional to the stroke. If higher efficiency is desired for longer stroke actuators, the coil assembly can be wound as a multiphase coil and then it will have to be commutated. Please consult the factory for long stroke applications.

Model #	VXSAA - BBB - CC - DD - Y
where:	X is C for moving coil NCC or M for moving magnet NCM type motor AA is the stroke in inches (0.5 inch stroke is 05 & 1.0 inch stroke is 10) BBB is continuous force in lbs (0.5 lbs is 005 & 1.0 lbs is 010) CC is the bearing type BS = Ball Slide CR = Cross Roller LB = Linear Bearing AB = Air Bushing RB = Roller Bushing JB = Jeweled Bearing DD is encoder resolution (01 is for 1 micron) Y is Special option (M is for magnetic encoder)
i.e. VCS10-023-BS-01-M is a NCC type motor with 1.0" stroke, 2.3 lbs of continuous force, Ball Slide stage with a 1 Micron Magnetic encoder

Specifications:

Model #

Stroke

Continuous

Peak

Km lbs/(watt)^.5

Bearing

Encoder

Moving

Motor

Photo

Drawing

Force (lbs)

Force

[N/(watt)^.5]

Type

Resolution

Type

Part

P/N

VCS01-001-CR-001

0.125

0.06

0.18

0.08

Cross

0.1 Micron

Optical

Magnet

NCC01-07-001-1X

JPEG

PDF

3.2 [mm]

0.3 [N]

0.9 [N]

0.35

Roller

Assembly

VCS03-050-BS-01-MC

0.25

5.0

15.0

1.82

Ball

1 Micron

Magnetic

Coil

NCC03-15-050-2X

JPEG

PDF

6.4 [mm]

22.2 [N]

66.6 [N]

8.07

Slide

Assembly

VCS05-011-BS-01-M

0.50

1.1

3.3

0.67

Ball

1 Micron

Magnetic

Magnet

NCC05-11-011-1X

JPEG

PDF

12.7 [mm]

4.9 [N]

14.7 [N]

2.95

Slide

Assembly

VCS05-060-CR-001

0.50

6.0

18.0

1.78

Cross

0.1 Micron

Optical

Magnet

NCC05-18-060-2X

JPEG

PDF

12.7 [mm]

26.4 [N]

79.2 [N]

7.83

Roller

Assembly

VCS05-060-CR-001-V

0.50

6.0

18.0

1.78

Cross

0.1 Micron

Optical

Magnet

NCC05-18-060-2X

JPEG

PDF

12.7 [mm]

26.4 [N]

79.2 [N]

7.83

Roller

Assembly

VCS05-060-BS-01

0.50

6.0

18.0

1.78

Ball

1 Micron

Optical

Magnet

NCC05-18-060-2X

JPEG

PDF

12.7 [mm]

26.4 [N]

79.2 [N]

7.83

Slide

Assembly

VCS05-060-CR-01-M

0.50

6.0

18.0

1.80

Ball

1 Micron

Magnetic

Magnet

NCC05-18-060-2X

JPEG

PDF

12.7 [mm]

26.6 [N]

79.9 [N]

8.01

Slide

Assembly

VCS05-060-BS-01-MC

0.50

6.0

18.0

1.78

Ball

1 Micron

Magnetic

Coil

NCC05-18-060-2X

JPEG

PDF

12.7 [mm]

26.4 [N]

79.2 [N]

7.83

Slide

Assembly

VCS05-060-BS-01-MCD

0.50

6.0

18.0

1.78

Ball

1 Micron

Magnetic

Coil

NCC05-18-060-2X

JPEG

PDF

12.7 [mm]

26.4 [N]

79.2 [N]

7.83

Slide

Assembly

VCS05-060-VBS-V01

0.50

6.0

18.0

1.78

Ball

1 Micron

Optical

Magnet

NCC05-18-060-2X

JPEG

PDF

12.7 [mm]

26.4 [N]

79.2 [N]

7.83

Slide

Assembly

VCS05-060-BS-12

0.50

6.0

18.0

1.78

Ball

12 Micron

Optical

Magnet

NCC05-18-060-2X

JPEG

PDF

12.7 [mm]

26.4 [N]

79.2 [N]

7.83

Slide

Assembly

VCS05-060-AB-01

0.50

6.0

18.0

1.78

Air

1 Micron

Optical

Magnet

NCC05-18-060-2X

JPEG

PDF

12.7 [mm]

26.4 [N]

79.2 [N]

7.83

Bushing

Assembly

VMS05-180-RB-001

0.50

18.0

54.0

2.95

Roller

0.1 Micron

Optical

Magnet

NCM05-28-180-2LB

JPEG

PDF

12.7 [mm]

80 [N]

240 [N]

13.10

Bushing

Assembly

VMS05-180-LB-12

0.50

18.0

54.0

2.95

Linear

12 Micron

Optical

Magnet

NCM05-28-180-2LB

JPEG

PDF

12.7 [mm]

80 [N]

240 [N]

13.10

Bushing

Assembly

VCS06-005-BS-01-M

0.60

0.5

1.5

0.37

Ball

1 Micron

Magnetic

Magnet

NCC06-08-005-2X

JPEG

PDF

15.2 [mm]

2.2 [N]

6.6 [N]

1.65

Slide

Assembly

VCS06-005-BS-12

0.60

0.5

1.5

0.37

Ball

12 Micron

Optical

Magnet

NCC06-08-005-2X

JPEG

PDF

15.2 [mm]

2.2 [N]

6.6 [N]

1.65

Slide

Assembly

VCS08-225-LB-01-C

0.80

22.5

67.5

4.00

Linear

1 Micron

Optical

Coil

NCC08-33-225-2X

JPEG

PDF

20.3 [mm]

100 [N]

300 [N]

17.80

Bearing

Assembly

VCS10-023-BS-01

1.00

2.3

6.9

0.81

Ball

1 Micron

Optical

Magnet

NCC10-15-023-1X

JPEG

PDF

25.4 [mm]

10.2 [N]

30.7 [N]

3.56

Slide

Assembly

VCS10-023-BS-01-M

1.00

2.3

6.9

0.81

Ball

1 Micron

Magnetic

Magnet

NCC10-15-023-1X

JPEG

PDF

25.4 [mm]

10.2 [N]

30.7 [N]

3.56

Slide

Assembly

VCS10-023-BS-01-MC

1.00

2.3

6.9

0.81

Ball

1 Micron

Magnetic

Coil

NCC10-15-023-1X

JPEG

PDF

25.4 [mm]

10.2 [N]

30.7 [N]

3.56

Slide

Assembly

VCS10-023-BS-01-MH

1.00

2.3

6.9

0.81

Ball

1 Micron

Magnetic

Magnet

NCC10-15-023-1H

JPEG

PDF

25.4 [mm]

10.2 [N]

30.7 [N]

3.56

Slide

Assembly

VCS10-023-BS-12

1.00

2.3

6.9

0.81

Ball

12 Micron

Optical

Magnet

NCC10-15-023-1X

JPEG

PDF

25.4 [mm]

10.2 [N]

30.7 [N]

3.56

Slide

Assembly

VMS10-020-LB-12

1.00

2.0

6.0

1.05

Linear

12 Micron

Optical

Magnet

NCM10-15-020-2LB

JPEG

PDF

25.4 [mm]

8.9 [N]

20.7 [N]

4.62

Bushing

Assembly

VCS10-027-CR-001

1.00

2.7

8.1

0.76

Cross

0.1 Micron

Optical

Coil

NCC10-15-027-1RC

JPEG

PDF

25.4 [mm]

12 [N]

36 [N]

3.38

Roller

Assembly

VCS10-046-BS-01-M

1.00

4.6

13.8

0.81

Ball

1 Micron

Magnetic

Magnet

NCC10-15-023-1X

JPEG

PDF

25.4 [mm]

20.4 [N]

61.4 [N]

3.56

Slide

Assembly

VCS20-020-BS-01-M

2.00

2.0

6.0

0.73

Ball

1 Micron

Magnetic

Magnet

NCC20-17-020-1X

JPEG

PDF

50.8 [mm]

8.9 [N]

26.6 [N]

3.55

Slide

Assembly

VCS20-020-BS-01-MC

2.00

2.0

6.0

0.73

Ball

1 Micron

Magnetic

Coil

NCC20-17-020-1X

JPEG

PDF

50.8 [mm]

8.9 [N]

26.6 [N]

3.55

Slide

Assembly

VMS02-012-JB-01

0.20

1.2

3.6

0.49

Jeweled

1 Micron

Optical

Magnet

NCM02-10-012-2JBE

JPEG

PDF

5.1 [mm]

5.3 [N]

16 [N]

2.17

Bearing

Assembly

VMS02-035-2F-05-M

0.11

3.5

10.5

0.90

Two

5 Micron

Magnetic

Magnet

NCM02-17-035-2F

JPEG

PDF

2.8 [mm]

3.6 [N]

46.6 [N]

3.99

Flexures

Assembly

VCS06-010-BS-01-MXY

0.62

0.8

2.3

0.34

Ball

1 Micron

Magnetic

Coil

NCC06-24-010-XY

JPEG

PDF

15.8 [mm]

3.6 [N]

10.2 [N]

1.51

Slide

Assembly

VCS10-023-LB-01-MD

1.00

2.3

6.9

0.81

Linear

1 Micron

Magnetic

Magnet

NCC10-15-023-1X

JPEG

PDF

25.4 [mm]

10.2 [N]

30.7 [N]

3.56

Bearing

Assembly

Custom Application Samples:

CLOSED LOOP VOICE COIL POSITIONING STAGES

1

Stage Specifications
Stage P/N: VCS01-001-CR-001
Stroke: 0.125"
Force: 0.06 lb Cont.
          0.18 lb   Peak
Bearing Type: Cross Roller
Encoder Resolution: 0.1 Micron
Load Cell Resolution: 0.1 gram
Features: Dual Feedback (Force & Position)

2

Stage Specifications
Stage P/N: VCS03-050-BS-01-MC
Stroke: 0.25"
Force: 5.0 lb     Cont.
         15.0 lb   Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron

3

Stage Specifications
Stage P/N: VCS05-011-BS-01-M
Stroke: 0. 5"
Force: 1.1 lb Cont.
3.3 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 Micron

4

Stage Specifications
Stage P/N: VCS05-060-CR-001
Stroke: 0.5"
Force: 6.0 lb Cont.
18.0 lb Peak
Bearing Type: Crossed Roller
Encoder Resolution: 0.1 micron

5
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Stage Specifications
Stage P/N: VCS05-060-CR-001-Z
Stroke: 0.5"
Force: 6.0 lb Cont.
18.0 lb Peak
Bearing Type: Crossed Roller
Encoder Resolution: 0.1 micron
Features: Vertical Motion (Z-Axis)

6

Stage Specifications
Stage P/N: VCS05-060-BS-01
Stroke: 0.5"
Force: 6.0 lb Cont.
18.0 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron

7

Stage Specifications
Stage P/N: VCS05-060-CR-01-M
Stroke: 0. 50"
Force: 6.0 lb    Cont.
          18.0 lb   Peak
Bearing Type: Cross Roller Slide
Encoder Resolution: 1 micron

8

Stage Specifications
Stage P/N: VCS05-060-BS-01-MC
Stroke: 0.5"
Force: 6.0 lb Cont.
18.0 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron
Features: Moving Coil Assembly

9

Stage Specifications
Stage P/N: VCS05-060-BS-01-MCD
Stroke: 0.5"
Force: 6.0 lb Cont.
18.0 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron
Features: Moving Coil Assembly

10

Stage Specifications
Stage P/N: VCS05-060-VBS-V01
Stroke: 0.5"
Force: 6.0 lb Cont.
18.0 lb Peak
Bearing Type: Ball Slide (Vacuum Compatible)
Encoder Resolution: 1 micron (Vacuum Compatible)
Features: Vacuum Compatible Stage

11

Stage Specifications
Stage P/N: VCS05-060-BS-12
Stroke: 0.5"
Force: 6.0 lb Cont.
18.0 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 12 micron

12

Stage Specifications
Stage P/N: VCS05-060-AB-01
Stroke: 0.5"
Force: 6.0 lb Cont.
18.0 lb Peak
Bearing Type: Air Bushing
Encoder Resolution: 1 micron
Features: Air Bearing

13

Stage Specifications
Stage P/N: VMS180-RB-001
Stroke: 0.5"
Force: 18.0 lb Cont.
54.0 lb Peak
Bearing Type: Roller Bushing
Encoder Resolution: 0.1 micron

14

Stage Specifications
Stage P/N: VMS05-180-LB-12
Stroke: 0.5"
Force: 18.0 lb Cont.
54.0 lb Peak
Bearing Type: Linear Bushing
Encoder Resolution: 12 micron

15

Stage Specifications
Stage P/N: VCS06-005-BS-01-M
Stroke: 0.6"
Force: 0.5 lb Cont.
1.5 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron

16

Stage Specifications
Stage P/N: VCS06-005-BS-12
Stroke: 0.6"
Force: 0.5 lb Cont.
1.5 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 12 micron

17

Stage Specifications
Stage P/N: VCS08-225-LB-01-C
Stroke: 0.8"
Force: 22.5 lb Cont.
            67.5 lb   Peak
Bearing Type: Linear Bearing
Encoder Resolution: 1 micron
Features: Moving Coil Assembly

18

Stage Specifications
Stage P/N: VCS10-023-BS-01
Stroke: 1.0"
Force: 2.3 lb Cont.
6.9 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron

19

Stage Specifications
Stage P/N: VCS10-023-BS-01-M
Stroke: 1.0"
Force: 2.3 lb Cont.
6.9 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron

20

Stage Specifications
Stage P/N: VCS10-023-BS-01-MC
Stroke: 1.0"
Force: 2.3 lb Cont.
6.9 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron
Features: Moving Coil Assembly

21

Stage Specifications
Stage P/N: VCS10-023-BS-01-MH
Stroke: 1.0"
Force: 2.3 lb Cont.
6.9 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron
Features: 0.50” Thru Hole

22

Stage Specifications
Stage P/N: VCS10-023-BS-12
Stroke: 1.0"
Force: 2.3 lb Cont.
6.9 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 12 micron

23

Stage Specifications
Stage P/N: VMS10-020-LB-12
Stroke: 1.0"
Force: 2.0 lb     Cont.
          6.0 lb    Peak
Bearing Type: Linear Bushing
Encoder Resolution: 12 micron

24

Stage Specifications
Stage P/N: VCS10-027-CR-001
Stroke: 1.0"
Force: 2.7 lb Cont.
8.1 lb Peak
Bearing Type: Cross Roller
Encoder Resolution: 0.1 micron

25

Stage Specifications
Stage P/N: VCS10-046-BS-01-M
Stroke: 1.0"
Force: 4.6 lb Cont.
15.3 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron
Features: Dual Voice Coil Motors

26

Stage Specifications
Stage P/N: VCS20-020-BS-01-M
Stroke: 2.0"
Force: 2.0 lb     Cont.
          6.0 lb    Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron

27

Stage Specifications
Stage P/N: VCS20-020-BS-01-MC
Stroke: 2.0"
Force: 2.0 lb Cont.
6.0 lb Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron
Features: Moving Coil Assembly

28

Stage Specifications
Stage P/N: VMS02-012-JB-01
Stroke: 0.2"
Force: 1.2 lb Cont.
3.6 lb Peak
Bearing Type: Jeweled Bearing
Encoder Resolution: 1 micron

29

Stage Specifications
Stage P/N: VMS02-035-2F-05-M
Stroke: +/- 0.11"
Force: 3.5 lb     Cont.
          10.5 lb   Peak
Bearing Type: Flexure
Encoder Resolution: 5 micron
Features: Flexures for High Frequency

30

XY Stage Specifications
Stage P/N: VCS06-010-BS-01-MXY
Stroke: 0.62" x 0.62”
Force: 0.8 lb    Cont.
            2.3 lb     Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron
Features: XY Motion

31

Stage Specifications
Stage P/N: VCS10-023-LB-01-MD
Stroke: 1.0"
Force: 2.3 lb     Cont.
          6.9 lb     Peak
Bearing Type: Ball Slide
Encoder Resolution: 1 micron
Features: Dual motion on same axis.
                Two parallel individual closed loop stages.