Coordinate Measuring Machine

Coordinate measuring machine, coordinate measuring instrument, CNC coordinate measuring tool for high precision measuring. A 'coordinate measuring machine' (CMM) is a device for measuring the physical geometrical characteristics of an object. This machine may be manually controlled by an operator or it may be computer controlled. Measurements are defined by a probe attached to the third moving axis of this machine. Probes may be mechanical, optical, laser, or white light, among others Description The typical CMM is composed of three axes, an X, Y and Z. These axes are orthogonal to each other in a typical three dimensional coordinate system. Each axis has a scale system that indicates the location of that axis. The machine will read the input from the probe, as directed by the operator or programmer. The machine then uses the X, Y, Z coordinates of each of these points to determine size and position. A coordinate measuring machine (CMM) is also a device used in manufacturing and assembly processes to test a part or assembly against the design intent. By precisely recording the X, Y, and Z coordinates of the target, points are generated which can then be analyzed via regression algorithms for the construction of features. These points are collected by using a probe that is positioned manually by an operator or automatically via Direct Computer Control (DCC). Technical details Parts Coordinate-measuring machines include three main components: The main structure which include three axes of motion Probing system Data collection and Reduction system - typically includes a machine controller, desktop computer and application software. Uses They are often used for: Dimensional measurement Profile measurement Angularity or orientation measurement Depth mapping Digitizing or imaging Shaft measurement Features They are offered with features like: Crash protection Offline programming Reverse engineering Shop floor suitability SPC software and temperature compensation. CAD Model import capability The machines are available in a wide range of sizes and designs with a variety of different probe technologies. They can be controlled and operated manually, or by CNC or PC controls. They are offered in various configurations such as benchtop, free-standing, handheld and portable.