Parker: Manual Rotary Positioning Stages 30000/M30000
Daedal precision rotary stages are
utilized whenever manually controlled rotation or precise angular positioning
are needed. The primary components include: a stationary base; a pre-loaded
angular contact main bearing; drive mechanism. and rotating top.
Rotary Positioner Principles
Parker Daedal rotary stages and
tables produce controlled rotation and angular positioning
Tangent Arm Drive
With some stages (models 2520, 2525,
4575), the drive mechanism is a tangent arm drive. Angular rotation, with this
system, is controlled by three control knobs. The release knob disengages the
shaft from the drive, freeing the table to be rotated by hand to a desired
location. The release knob is then tightened to re-engage the drive mechanism
and transfer control to the adjustment knob which, when rotated, produces
precise angular positioning of the shaft and table top. The locking knob can
then be used to positively lock the table at the desired setting.
Precision Worm Gear Drive
A precision worm gear drive is
employed as the drive mechanism for the other Parker Daedal stages. A worm
wheel (gear), which is attached to the table shaft, meshes with the worm drive,
whose shaft extends out of the housing. Controlled rotation of the worm shaft
creates precise angular rotation of the worm wheel and table shaft. The worm
gear and shaft are matched sets and are preloaded to remove backlash. This type
of drive provides high resolution (180:1) and continuous angular positioning
over a full 360° range.
Standard Features
Parker Daedal has engineered all of
its rotary positioners with emphasis on construction and detail. The resulting
stages exhibit outstanding quality and proven, reliable performance. All models
are manufactured on the very best automated equipment, skilfully assembled, and
thoroughly inspected and tested. This enables units manufactured in production
quantities to satisfy critical performance specifications. All Parker Daedal
rotary positioning devices feature:
• Aluminium/steel construction
• Protective black anodize finish
• Low-friction rotary adjustment
• Precise/accurate movement
• Trouble-free operation
Series 2500 rotary positioners offer
low-friction rotary positioning, quick manual table top rotation, precise
angular adjustment at any selected position, and positive locking. These
miniature units have a preloaded angular contact ball bearing system which
provides smooth, continuous rotary movement.
30000/M30000 Series Specifications
Parker Daedal rotary indexing tables
provide accurate rotational positioning with a heavy load-carrying capability.
Tables feature a crossed roller bearing system which is stiffly pre-loaded to
produce precise rotation of the table top. The drive mechanism is a precision
worm gear drive which provides precise rotational positioning.
An angular readout—graduated in
degrees—is provided around the circumference of the table top, while a finer
position readout dial, found on the control knob, reads directly in 0.01°
increments, with the vernier providing even higher (0.002°) resolution. A
thumbscrew lock is included to lock the table at the desired setting.
For customer convenience, threaded
mounting holes with locking threaded inserts are provided as well as a
clearance hole through the center of the table to allow easy access from below.
If desired, the table top can easily
be removed to permit custom modification. These units can be mounted in any
orientation and are compatible with Parker Daedal linear tables.