The Important Role of CMM for Three Dimensional Measurement Technology

The appearance of CMM is a milestone in the transition of measuring instrument from classical mode of action to modern automatic testing technology. CMM has an important process for 3D measurement technology in the following aspects.

1. Realize the high efficiency and high precision measurement and evaluation of basic geometric elements, and solve the measurement of complex shape surface contour size, such as the aperture and hole position of box parts, blades and gears, automobiles and aircraft, etc.

2. The measurement accuracy of three-dimensional measurement is provided. The single-axis accuracy of the current high-precision coordinate measuring machine can reach within 1um per meter length, and the three-dimensional spatial accuracy can reach 1um~2um. For the coordinate measuring machine used in workshop testing, the measurement accuracy per meter is also 2~3um on a single axis.

3. Because the CMM can be used with CNC machine tools and machining centers to form production processing lines or flexible manufacturing systems, it promotes the development of automatic production lines.

4. With the continuous improvement of the precision of the CMM and the continuous development of the automation program, the progress of three-dimensional measurement technology has been promoted and the measurement efficiency has been greatly improved. In particular, the introduction of electronic computers is not only convenient for data processing, but also can complete the control function of CNC, which can reduce the measurement time by more than 95%.

5. With the continuous maturity of laser scanning technology, while meeting the high precision measurement (quality measurement) and laser scanning (reverse engineering) multi-functional composite CMM development to better meet the needs of users, greatly reduce user input costs, improve work efficiency.

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