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Roundness measuring device, RMI-D560C

Metrology Technology Research & Development (Taiwan)

Description

Cylindricity:
  • The cylindricity measuring instrument operates based on a precise rotation center and a linear motion guide, providing highly accurate comparative measurements.
  • Cylindricity is quantified by measuring the change in radius of the actual contour of several cylindrical surfaces at different angles to the rotation center using a displacement sensor.
  • Used for analyzing form errors (roundness, cylindricity, flatness, straightness) and positional errors (concentricity, coaxiality, runout, perpendicularity).
Measurement capabilities:
  • Cylindricity module: radial total runout, concentricity, taper, radius.
  • Roundness module: concentricity, single radial runout, wall thickness variation.
  • Straightness module: parallelism, verticality.
  • Single-section flatness module: single axial runout, verticality, parallelism.
  • Multi-section flatness module: parallelism, total axial runout, verticality.
  • Commutator module: single contact jump, adjacent contact jump, intermittent contact difference.
  • Reference standards for cylindricity evaluation: LSCY, MZCY, MICY, MCCY, OSCY.
Technical features:
  • The worktable and Z-axis column are made of natural granite, ensuring structural stability and resistance to deformation.
  • The rotary spindle uses pneumatic suspension to minimize friction, maintaining precision and rotation stability.
  • High-precision sensors along X and Z axes increase automation and enable automatic measurement and data transmission.
  • Key components are made from special alloys and treated to relieve internal stress, ensuring durability and long-term accuracy.

Technical Specifications

Bearing type Air bearing
Rotational accuracy (0.025 + 6H/10000) µm
Rotational speed 4, 6, 8, 10 rpm
Adjustable table diameter 180 mm
Table load capacity 25 kg
Rotation diameter 560 mm
Maximum measuring diameter 280 mm
Transverse column travel 320 mm (electric drive)
Maximum measuring depth 100 mm (minimum inner diameter 30 mm)
Column straightness 0.3 µm / 100 mm
Horizontal movement 165 mm (electric drive)
Protrusion amount 25 mm
Data acquisition device Sensor
Sampling points per circumference 14400 points
Sensor type Inductive sensor
Sensor range ±300 µm
Sensor resolution 0.001 µm
X scale RENISHAW scale 0.5 µm
Z scale RENISHAW scale 0.5 µm

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