In order to make the CNC machine have the measurement function at the same time, the automatic detection system is configured, which is composed of the trigger type probe, the signal transmission system, the converter and the corresponding software.
2 triggered probe automatic detection system
211 main types of inductive information transmission and optical information transmission trigger type probe automatic detection system.
212 Inductive information transmission trigger type probe automatic detection system working principle 21211 working principle When the workpiece is used as the measurement object, the trigger type test avatar common tool is installed in the machine tool magazine, controlled by the operating program, can be automatically adjusted It is installed on the machine spindle and then automatically measured according to different needs. The probe is mounted on the magazine or spindle by the same tool holder as the tool. The measurement signal is transmitted from the inductive probe to the inductive receiver mounted on the machine and then passed through the cable to the converter and machine control system.
When the measuring object is the tool of the machine tool, the trigger type probe should be installed on the machine table, in the position of the machined part, and the tool to be tested is still fixed on the machine tool spindle, and the program of the same nature is called to implement the automatic measurement. .
21212 working process The probe mounted on the spindle of the machine tool moves to the workpiece under test control. When the probe at the top of the pole touches the established point on the workpiece, the probe is triggered and the trigger signal is transmitted to the converter. A short beep is sent and the signal is converted and sent to the machine's control system, where the machine coordinates are recorded. After the signal is received, the machine stops moving.
When the probe leaves the workpiece, a second beep sounds and the spindle is reset, at which point the probe is ready for the next measurement.
213 optical information transmission trigger probe automatic detection system works
Working principle: The optical probe system is similar to the induction type except that the measurement signal is transmitted from the optical probe to the optical receiver mounted on the machine tool, and then transmitted to the converter and the machine control system via the cable.
Only the signal and reception between the probe and the receiver are indicated. The "optical probe" emits a signal that is actually an invisible ray in the infrared frequency region. The emission range is determined by two parameters, one being the angle α and the other being the inclination of the emitter from the axis of the probe. The effective working area of ​​the receiver is also a cone-shaped range with an angle β, and the tilt angle can be determined according to the installation adjustment.
3 triggering probe automatic detection system application
The inductive information transmission trigger type probe automatic detection system has high reliability and high installation requirements, and is suitable for large and medium-sized CNC machine tools. Optical information transmission trigger type probe automatic detection system, easy to install, compact structure, good sealing, suitable for small CNC machine tools.
4 Conclusion
The automatic detection system of the trigger type probe can not only take the workpiece as the measurement object but also the tool as the measurement object, and realize the purpose of automatic measurement by detecting the dimensional accuracy and the actual position of each geometric element. With the touch probe measurement, the control system of the CNC machine tool or machining center can use the switch sensor. The position measurement system of the machine tool can be used to detect the actual position of the workpiece or the tool, and the measurement data can be processed without other external devices.
(Finish)
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