Mini-Moiré™ High Speed Digitizer for the CMM

Features

• Simple retrofit to current CMM
• High-speed, high-density digitizer
• Optical non-contact
• Renishaw Autojoint mount

The primary EOIS product is the Mini-Moiré sensor. It is based on the original EOIS Moiré technology (US patent #5,175,601), for high-speed 3D XYZ measurement. This technology has a much higher data acquisition speed and point density than conventional touch probes or laser sensors. The Mini-Moiré sensor (US patent #5,319,445) has all the power of the original sensor, in a smaller and lighter package. It is the only Moiré sensor light enough to work with the Renishaw PH-9 or PH-10 articulating heads, used by the majority of CMM customers. For these customers, the Mini-Moiré is the only choice for high speed data acquisition, using their existing equipment.

The sensor is provided with a Renishaw Autojount mount, so you can quickly switch between your current touch probe and the Mini-Moiré sensor. A calibration cube is also provided, to automatically align the sensor with the CMM coordinates. Once the sensor is aligned, just move the CMM to the desired position and press a single button to capture 250K XYZ points. The EOIS software remembers your moves, so you can re-scan the same shape part automatically.

Hardware Specifications

Notes:

1. X,Y resolution is determined by the number of pixels in the camera. One XYZ data point is calculated for each pixel of the camera.
2. Z resolution is essentially the same as the total XYZ accuracy of the sensor. It is defined as the 3-sigma error between measured and nominal XYZ coordinates, over the full range of the sensor. It is calculated by measuring marked precision plates at several positions over the range of the sensor.
3. Capture speed indicates maximum sustained capture speed for multiple images. It does not include CMM motion time.
4. Processing performed in parallel with capture, so capture can continue at maximum speed. Processing speed given for typical EOIS supplied computer (PII/400Mhz).
5. EOIS has developed interfaces for many popular CMMs (see list below). If you CMM is not on this list, contact EOIS for details on developing a custom interface.
6. System accuracy depends on the CMM repeatability and accuracy.

Software Functions

• Sensor alignment
• Part programming for automatic scanning
• Image Editing
• XYZ point reduction (space sampling)
• XYZ cross section calculation
• Output formats:
  
  • IGS point clouds and cross-section lines
  • STL polyface models
  • ASCII text point clouds
  • BMP greyscale images

Standard EOIS CMM Interfaces

• Brown & Sharpe PC-DMIS/Valisys
• Mitutoyo CMM, generic GPIB interface
• Mitutoyo CMM, MAG-1
• Giddings & Lewis, Cordax, FLB interface
• Dea DEC RT-11SJ (S) V05.00 Controller
• Renishaw PHC9, PHC10 probe controller, RS232 interface
• GE Fanuc CNC (manual)
• Compumotor ZETA 6104-57-83 Controller, Motion Architect, v3.32
• Compumotor PC21, PC23 Motor Controller
• Techno Motor Controller
• Digital ReadOut TTL Counter Card Interface
• Generic customer supplied CMM interface program