YANRUN YR-360A Motorized Multi-Tooth Dividing Table

Overview

The YANRUN YR-360A Motorized Multi-Tooth Dividing Table is a high-precision angular positioning stage engineered for optical metrology laboratories, calibration facilities, and precision manufacturing environments. It operates on the principle of mechanical multi-tooth indexing—leveraging the statistical averaging effect inherent in the simultaneous engagement of hundreds of precisely machined gear teeth to achieve sub-arcsecond repeatability and exceptional angular stability. Unlike conventional worm-gear or stepper-motor-driven rotary tables, the YR-360A utilizes a hardened steel 360-tooth (360T) indexing ring with symmetrical tooth geometry and optimized contact distribution, enabling deterministic angular positioning without cumulative backlash or thermal drift typical of friction-based drives. Its primary function is to serve as a stable, programmable reference platform for angle-sensitive instruments—including autocollimators, interferometers, and digital theodolites—during the calibration of angular standards such as polygon mirrors, precision prisms (e.g., 17-face and 23-face optical polygons), angle blocks, and retroreflective targets.

Key Features

• Motorized, computer-controlled angular indexing with RS232 interface for integration into automated calibration workflows
• 360-tooth hardened steel indexing mechanism providing inherent error averaging and long-term geometric stability
• Sub-arcsecond repeatability (≤ ±0.5 arcsec) and ≤ ±1.0 arcsec absolute positioning accuracy under controlled environmental conditions (20 ± 0.5 °C, humidity < 50% RH)
• Integrated centering mechanism with ≤ 2 µm radial runout and ≤ 1 µm axial wobble over full 360° rotation
• Modular mounting interface compatible with standard optical breadboards (M6 threaded holes on base plate) and kinematic mounts
• Low-vibration stepping motor drive with microstepping control and position feedback via optical encoder (10,000 counts/rev resolution)
• Robust cast-iron base with vibration-damping design, suitable for use on granite surface plates or active isolation tables

Sample Compatibility & Compliance

The YR-360A is specifically designed to support traceable angular metrology in accordance with international standards including ISO 10110-7 (optical component testing), ISO 230-2 (test code for positioning accuracy of NC machines), and GB/T 28569–2012 (Chinese national standard for multi-tooth dividing tables). It is routinely deployed in accredited calibration labs for verifying angular artifacts such as 17-face and 23-face optical polygons—where indexed positions align with color-coded reference marks (red = 23 divisions, green = 17 divisions) on the peripheral scale ring. The table accommodates optical components up to Ø150 mm and 5 kg mass, with adjustable clamping fixtures supporting plano-optics, prism assemblies, and collimator-mounted test objects. All mechanical interfaces conform to ISO 841 (numerical control coordinate systems) and are compatible with common autocollimator focal lengths (e.g., 500 mm to 1000 mm).

Software & Data Management

The YR-360A supports ASCII-based command protocol over RS232, enabling seamless integration with LabVIEW, MATLAB, Python (pySerial), or custom C++ control applications. Standard firmware includes predefined angular sequences (e.g., full-circle step-and-hold at 1°, 5°, or user-defined intervals), dwell time configuration, and bidirectional indexing with backlash compensation. Optional software modules provide real-time angular deviation logging, statistical process control (SPC) charting of repeatability data, and export of measurement records in CSV or XML format compliant with ISO/IEC 17025 documentation requirements. Audit trail functionality—including operator ID, timestamp, and command history—is available upon request to meet GLP/GMP or FDA 21 CFR Part 11 validation needs.

Applications

• Calibration of high-accuracy angular standards: optical polygons, angle blocks, and precision goniometers
• Verification of autocollimator linearity and zero-error across multiple azimuthal positions
• Measurement of prism apex angles, wedge errors, and surface orientation deviations in multi-surface optics
• Alignment and characterization of laser beam steering assemblies and multi-axis optomechanical systems
• Testing of angular repeatability in robotic optical positioning stages and hexapod platforms
• Research-grade experiments in rotational metrology, including harmonic error mapping and thermal drift analysis

FAQ

What angular resolution does the YR-360A support?
The mechanical indexing resolution is defined by its 360-tooth ring, yielding a nominal 1.0° mechanical step. With microstepping and encoder interpolation, positional commands can be issued at 0.01° increments; however, traceable angular accuracy remains governed by the physical tooth engagement and is certified per GB/T 28569–2012.
Is the YR-360A compatible with non-YANRUN autocollimators?
Yes—the table is instrument-agnostic and functions as a passive angular reference stage. It has been validated with commercial autocollimators from Thorlabs, Zygo, and Mitutoyo, provided alignment and working distance constraints are observed.
Can the YR-360A be integrated into a fully automated calibration system?
Yes. Its RS232 interface, deterministic motion profile, and support for external trigger synchronization enable integration into end-to-end calibration cells compliant with ISO/IEC 17025 Clause 7.8.
Does the unit include calibration certification?
A factory calibration report (traceable to NIM, China) is supplied with each unit, documenting angular deviation maps at 360 positions. UKAS or DAkkS-accredited calibration is available as an optional service.
What maintenance is required?
Annual verification of indexing repeatability and centering accuracy is recommended. No lubrication is required—the hardened steel tooth interface is dry-running and sealed against particulate ingress.