DESCRIPTION OF A SPINDLE TESTING
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Introduction:
After connecting the spindle to the computerized testing system (air, electricity, control
etc.), it will automatically perform a series of tests, record the results, send notice
when the test fails and stop in case of danger. At the end of each test a detailed report
is received including diagrams.
• You can change the numeric definitions for the operating process.
• Results recording will be continuous and written in data format. In case of a failure
data will be recorded for the propose of repairing the defects (faults) As well as
reference and proposals for improving.
• When a test will fail, a window will open with the name of the test blinking.
• A test report will be produced at the end of the test.
•
On the screen there will be a display of the test progress, a graphic display, and a
analogy of digital display
Connecting The Spindle To The Testing System
Identify the spindle (serial number, bar code etc.)
- Connect inlet and outlet water tubes do the same with air tube.
- Connect ventilation tube.
-Connect pressure measuring sensors tube (rather then a screw)
-Connect cables in the following order: sensor, signal, power.
1. Testing Seal Of Coolant System
Using air manometer at zero rpm measure that air pressure is declining as a time
function.
2. Testing Engine Coolant Flow
Testing coolant flow to engine (lpm), with air manometer. At zero rpm.
3. Air Flow For Bearing
Testing airflow to spindle (lpm), with air flow meter. At zero rpm.
4. Air Flow In Rear Ventilation
Testing airflow in rear ventilation (lpm) with air flow meter. At zero rpm.
5. Engine Coils Resistance
Testing engine coil resistance (Ω). At zero rpm.
6. Thermistor Resistance
Testing Thermistor resistance (Ω). At zero rpm.
7. Deceleration
Testing deceleration time from 40Krpm to 10Krpm.
8. Sensors-Checking Air Pressure
Testing air pressure with an air manometer. At zero rpm.
9. Sensors-Testing Resistance And Sensor Disconnection
Testing resistance of brush to brush (Ω). At zero rpm.
10. Vibrations
Analyze vibrations instrument.
11. Noises
Testing spindle noise with a noise meter.
12. Current
Testing engine current in 3 phases. Will show a chart of current Vs. rotation speed.
13. Voltage
Testing voltage at engine entrance in 3 phases.
14. Thermal Control Of Spindle
Reading the temperature in 3 points on the spindle including motor thermistor. (The
thermistor is a resistor that changes according to temperature change.)
15. Continues Running
Continuous running at maximum speed (allowed), for 48 hours, during which
parameters such as speed, current, voltage, temperature etc. will be displayed and
monitored, in large time intervals according to need. The test will be based on a
sample.
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