Common instruments for maintenance in precision parts processing
In the process of fault detection of CNC machine tools for precision parts processing, it is necessary and effective to use some necessary instruments. These special instruments can directly reflect the condition of fault points from the perspective of quantitative analysis.
Precision parts processing
1. Vibration meter
The vibration measuring instrument is the most commonly used and basic instrument in vibration detection in precision parts processing. It amplifies, transforms, integrates and detects the weak signal output by the vibration measuring sensor, and then directly displays the vibration value of the measured equipment on the instrument or display screen. In order to meet the requirements of on-site testing, the vibration measuring instrument is generally made into a portable.
2. Infrared thermometer
Infrared temperature measurement is to use the principle of infrared radiation to convert the measurement of object surface temperature into the measurement of its radiation power. The infrared detector and corresponding optical system are used to receive the invisible infrared radiation energy of the measured object, and convert it into other energy forms for easy detection for display and recording.
3. Oscilloscope
In NC system repair, the machine tool is usually tested with a dual channel oscilloscope with a frequency band width of 10~100MHz. It can not only measure the parameters such as level, upper and lower edge of pulse, pulse width, period and frequency, but also compare the phase and level amplitude of two signals. It is often used to observe the oscillation waveform of the main switching power supply, the ripple output by the DC power supply or the speed measuring generator, and the overshoot and oscillation waveform of the servo system. It is used to check and adjust the output waveform of the photoelectric amplifier of the tape reader, as well as check the vertical and horizontal oscillation of the CRT circuit, the scanning waveform, the video signal of the video amplifier circuit, etc.
