What is a 3D measuring machine CMM?

The 3D measuring machine is a coordinate measuring machine that has both contact type and non-contact type, and can measure the three-dimensional shape of various parts. It is possible to measure shapes such as R of molds that cannot be measured with calipers, etc., and it is possible to obtain dimensions, positional relationships, and geometrical tolerances using software. In the contact type, the probe is applied to the part, the coordinate information for each point is accumulated, and the dimensions are calculated. The contact type is not suitable for measuring easily deformable parts. The non-contact type measures using a laser, and the measurement time can be shortened compared to the contact type. Coordinate measuring machines are generally measured in a room with constant temperature control to avoid errors due to temperature expansion. In addition, many models require specialized skills for measurement.

Application of 3D measuring machine CMM

A 3D measuring device, also known as a 3D metrology instrument, is a device used to measure the shape and dimensions of an object in three dimensions. These types of measuring instruments are widely used in industries such as manufacturing, quality control, and research and development. Below are the common types of 3D measuring devices and their characteristics.

Main Types
Coordinate Measuring Machine (CMM)
1. Function: Uses a probe to touch the surface of an object and accurately obtain coordinates along the XYZ axes.
2. Applications: Dimensional measurement of precision parts, shape measurement, quality control.
3. Features: High precision, wide measurement range, programmable.

Laser Scanner
1. Function: Projects laser light onto the object, detects the reflected light with sensors, and obtains the 3D shape.
2. Applications: Scanning large objects, digital preservation of cultural heritage, measuring buildings.
3. Features: Fast, wide measurement range, non-contact measurement.

Optical Measurement Device
1. Function: Uses cameras and projectors to project light onto an object, analyzes the reflected light or shadows to measure the shape.
2. Applications: Measurement of fine parts, inspection of electronic components.
3. Features: Non-contact, high resolution, capable of measuring complex shapes.

X-ray CT Scanner
1. Function: Uses X-rays to scan the internal structure of an object and creates a 3D model from tomographic images.
2. Applications: Inspection of internal defects in materials, diagnostics in the medical field.
3. Features: Non-destructive testing, detailed analysis of internal structures.

3D measuring devices play a crucial role in any field that requires precise measurements, and their applications are expanding with technological advancements.

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