CMM machine
Main Parts of CMM
Air Bearing
Under normal working pressure, the thickness of air space between air bearing and guide rail is fixed, which can ensure good repeatability of the coordinate measuring machine.
If the pressure of air supply fluctuates, the change of the pre-tightening force of the air bearing will accordingly lead to the change of intermembrane space.
Scales & Encoders
A linear encoder is a sensor, transducer or read-head paired with a scale that encodes position. The sensor reads the scale in order to convert the encoded position into an analog or digital signal, which can then be decoded into position by a digital readout (DRO) or motion controller.
Source: Wikipedia
Prob system
CMM probs convert physical measurements into electrical signals. CMM probes have a wide classification for direct and comparative measurements.
CMM probes are available in three main forms:
- Touch-Trigger probes
- Displacement Measuring CMM probes
- Proximity or Non-contact Probes
Servo motors
DC motors are most commonly used in variable speed and torque applications. They include brush-less and gear motors, as well as servomotors
Joystick
A joystick is a low profile potentiometric controller providing precision multi-axes finger-positioning control.
Machine control system and software
The coordinate measuring machine (CMM) is a mechanical system that moves a measuring probe to determine the coordinates of points on the surface of a workpiece. The CMM comprises: the machine itself; the measuring probe; the control system, and the measuring software
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