| Name: | Vision Measuring System | Keyword: | Video measurement devices |
|---|---|---|---|
| Meas. Accuracy: | (2.5+L/200) μm | Meas. Travel: | 500 X 400 X 250 mm |
| Camera: | High Resolution Industrial Camera | Resolution: | 0.01 μm Absolute Linear Scale |
| Operation Model: | Automatic | Repeatability: | ± 4 - 5 μm |
Video Measuring Machine (VMM), also known as a vision measuring system, operates based on the principles of optical non-contact measurement technology. It combines high-resolution video imaging, precise optical and lighting systems, and advanced software to measure the dimensions of objects with great accuracy and speed. Here's a detailed look at the working principle of a Video Measuring Machine:
Image Capture: At the core of a VMM is a high-resolution digital camera, which captures images of the object placed on the machine's stage. The object is illuminated by a combination of bright-field and dark-field lighting to enhance various features and edges for better visibility and measurement accuracy.
Optical System: The camera is often equipped with a zoom lens system that can be adjusted to view the object at different magnifications. This allows for flexibility in measuring objects of various sizes and details.
Stage Movement: The object is placed on a flat, stable stage that can move in X, Y, and sometimes Z axes. This movement is typically controlled by computer-driven motors that position the object precisely under the camera. In some machines, the camera and optics move instead, while the object remains stationary.
Software Processing: The captured images are processed using specialized software. This software applies various algorithms to recognize edges, shapes, and features of the object. It calculates dimensions such as distances, angles, radii, and other geometric parameters by comparing the known scale of the image with the pixel dimensions in the captured image.
Edge Detection: One of the key functions of the software is edge detection. It identifies the exact points on the object where edges occur, which is critical for dimensional measurement. The software determines these points based on changes in contrast or color detected by the camera.
Calibration: To ensure accuracy, the VMM is calibrated using standards or known references. Calibration compensates for any optical distortions or inaccuracies in the machine's mechanics or imaging system.
Data Output: Finally, the measurements are displayed to the user and can be exported to other systems or used to generate detailed reports. The software may also provide statistical analysis to monitor quality control processes.
Technical Specification
| Model | SP-3020 | SP-4030 | SP-5040 | SP-6050 |
| Measuring Travel(mm) | 300 x 200 x 200 | 400 x 300 x 250 | 500x400x250 | 600 x 500 x 300 |
| Overall Dimension (mm) | 1200 x720 x 1600 | 1250 x 900 x 1600 | 1920 x 1200 x 1720 | 1350 x 1000 x 1850 |
| Work Table Glass Size(mm) | 339 x 239 x 10 | 439 x 339 x 12 | 549 x 469 x 16 | 648 x 548 x 18 |
| Weight (kg) | 280 | 410 | 800 | 1700 |
| Max Table Load(kg) | 30 | 30 | 30 | 30 |
| Measurement Accuracy (μm) | 1.5+L/200 | 2.5+L/200 | 2+L/150 | |
| Magnification | Optical Magnification 0.7-4.5X, Image Magnification 20-125X |
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| Axis Display Resolution | 0.00001mm (0.01μm) |
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| Lighting System | Five circle eight areas up light with Programmable source |
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| Operation Model | Automatic, control by mouse, joystick or keyboard |
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| Lens | Automatic Zoom, automatic focus optical coaxial lens |
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| Vision System | High-resolution 1/2'' CMOS global shutter camera |
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Characteristics
1. The X, Y, and Z axes of the Absolute Linear Scale, which have been independently researched and developed, feature a resolution as high as 0.01 μm.
2. F3 high precision closed loop auto zoom lens.
3. The uniquely designed motion controller of the Vision measuring machine employs Ethernet transmission, providing an efficient and reliable system that overcomes the instability of USB transmission.
4. High-resolution 1/2'' CMOS sensor of image processor to ensure the image is clear and without smearing.
5. The up light source using eight areas partitioned independent control lighting system, and the light-emitting element using low-attenuation LED to extend working life.
6. The multi-function 2D and 3D measurement software, which was independently developed, allows measurement results to be exported to formats such as DXF, Word, Excel, PDF, and others.
F3 high precision closed loop auto zoom lens
Lens Features:
1. 3 million pixels high resolution lens
2. Fully closed-loop servo control eliminates gear transmission gap and greatly improves the repeatability of the machine.
3. Utilize the high-precision and high-resolution ring-shaped grating ruler, which was specially developed and designed by our company for the F3 Lens, to provide full closed-loop position feedback.
4.The F3 lens includes a coaxial light source to address the issue of inadequate lighting when measuring deep holes.
5. Fully closed-loop servo position feedback for fully automatic focusing
Three Axis of SPARTAN machine adopt the AC servo motor system, recognized by the industry as one of the most reliable system, to make sure high speed and reliable measuring.
21 Orders Volumetric Compensation
The Easson Vision Measurement Machine is equipped with the AR series Network control System, which includes 21 orders of volumetric compensation. It features ultra-high-speed linear encoder reading and a built-in EAD (absolute scale decoder) that enables the use of our AS-80 high precision absolute scale. This setup provides high accuracy and high-resolution measurements.
2D / 3D Multiple Measurement
Vision measuring machines are compatible with the UK Renishaw high precision touch probe for both 2D and 3D multi-measurement tasks. Functional capabilities include height measurement, plane measurement, sphere measurement, cylinder measurement, cone measurement, inner circle measurement, and inner cylinder measurement, among others.
