Manhart How to determine the specific cause of a malfunction in a CNC circular machine?

When determining the specific cause of a malfunction in a CNC circular machine, we can follow the following steps and key points to ensure clear and accurate analysis:
###1、 Collect fault information
1. * * Inquire with the operator * *: Firstly, communicate in detail with the maintenance or operation personnel to understand the specific symptoms, occurrence time, frequency, and possible impacts of the malfunction.
2. * * View Alarm Record * *: View the alarm record of the CNC system, including the alarm number, alarm content, etc., which usually directly points to the possible fault area.
###2、 Preliminary judgment
1. * * Observation phenomenon * *: Observe the performance of the CNC circular machine during operation, such as whether there are any abnormal noises, vibrations, heating anomalies, etc.
2. * * Check indicator lights * *: Check the status of the indicator lights inside the control cabinet, including power indicator lights, fault indicator lights, etc., which helps to preliminarily determine the cause of the fault.
###3、 Utilizing diagnostic tools and methods
1. * * Self diagnostic function * *:
-By utilizing the self diagnostic function of the CNC system, possible fault ranges can be quickly located through CRT display or alarm information.
-Refer to the maintenance manual or diagnostic guide of the CNC system to understand the specific alarm meanings and corresponding handling measures.
2. * * Visual inspection method * *:
-Visually inspect the machine tool to see if there is any obvious mechanical damage, electrical component burning, detachment, or other phenomena.
-Under the condition of power outage of the entire machine, the possible cause of the malfunction can be identified by touching the installation status of each main circuit board and the insertion status of each plug socket.
3. * * Instrument inspection method * *:
-Use conventional electrical instruments such as a multimeter, oscilloscope, etc. to test the electrical system of the machine tool, such as checking the power supply voltage and signal status.
-Pay special attention to checking key components, such as servo drives, motors, sensors, etc., to see if their working status is normal.
###4、 Specific diagnostic steps
1. * * Analyze alarm information * *:
-Based on the alarm information of the system, combined with the electrical drawings and operation manual of the machine tool, analyze the possible causes of the malfunction.
-Pay attention to distinguishing between hardware faults and software faults in order to take different handling measures.
2. * * Check the electrical system * *:
-Check whether the connection of the electrical circuit is firm, and whether there is any looseness, short circuit, open circuit, etc.
-Check the working status of electrical components, such as fuses, relays, contactors, etc., to ensure they are functioning properly.
3. * * Check the mechanical system * *:
-Check the wear and lubrication of key components such as the transmission system, guide rails, and bearings of the machine tool.
-Pay attention to observe whether there are abnormal noises, vibrations, and other phenomena during the operation of the machine tool, which may be related to mechanical component failures.
###5、 Comprehensive judgment and positioning
1. * * Based on experience judgment * *:
-Based on the experience of maintenance personnel and their understanding of the machine tool, combined with the above information, determine the specific cause of the malfunction.
-Pay attention to the possibility of composite faults, that is, a fault may be caused by multiple factors together.
2. * * Identify the fault point * *:
-Once the specific cause of the malfunction is determined, the fault point can be further located, that is, the specific component or location.
-Based on the positioning results, develop corresponding maintenance plans to quickly repair faults.
###6、 Precautions
1. * * Ensure safety * *: During the diagnosis and maintenance process, always ensure the safety of personnel and equipment, and follow safety operating procedures.
2. * * Use professional tools * *: Use appropriate tools and equipment for diagnosis and maintenance to ensure accuracy and efficiency.
3. Timely recording: Record the diagnostic process and results for subsequent repair and maintenance work. Meanwhile, these records can also serve as diagnostic references for similar faults in the future.