1 Item Number: PP110-95-100
2 Rotation Range: 360° of Continuous Rotation
3 Diameter of Platform: Ø95mm
4 Drive Mechanism: Worm Gear
5 Worm Gear Ratio: 720 : 1
6 Stepper Motor (1.8°): 35BYG - Stepping Motor with 2-Phases & 1.8° of Step Angle
7 Material – Finish: Aluminum Alloy - Black-Anodized
8 Load Capacity:20Kg
9 Weight: 1.7kg
1 Design Resolution: 0.03°=108”, Non-MS Driver
2 Rotational Velocity (Max): 3°/sec
3 Repeatability: 0.0025°=9”
4 Absolute On-Axis Accuracy: 0.0075°=27”
5 Run-Out of Top Plate: 20μm
7 Eccentricity: 5μm
8 Lost Motion:
Position control methods of Rotation Stage
DC motor and encoder with worm drive
A DC motor may also be used in place of a manual control knob. A DC motor does not move in fixed increments. Therefore, an alternate means is required to determine stage position. An encoder may be attached to the DC motor and used to report the angular position of the motor to the motor controller, allowing a motion controller to reliably and repeatably move the stage to set positions.
When precise angular positioning over only a small total angle is required, a linear actuator (either manual, or motorized) may be used. Typically, the range of motion possible is only 10° to 20° of rotation. The linear actuator presses against a contact surface fixed to the stage platform such that extension or retraction of the actuator causes the platform to rotate. The stage platform is sprung against the actuator tip so that the contact surface stays in contact with the actuator tip when the actuator retracts.About stage
The stage is a platform below the objective which supports the specimen being viewed. In the center of the stage is a hole through which light passes to illuminate the specimen. The stage usually has arms to hold slides (rectangular glass plates with typical dimensions of 25×75 mm, on which the specimen is mounted).
At magnifications higher than 100× moving a slide by hand is not practical. A mechanical stage, typical of medium and higher priced microscopes, allows tiny movements of the slide via control knobs that reposition the sample/slide as desired. If a microscope did not originally have a mechanical stage it may be possible to add one.