Manhart How to determine the cause of a malfunction and perform maintenance when inspecting and analyzing a CNC circular machine?

When inspecting and analyzing the CNC circular machine to determine its cause of failure and carry out maintenance, we can follow the following clear steps and inductive methods:
###1、 Fault records
1. * * Machine model and system information * *:
-Record the model of the faulty machine tool, the control system model used, and the system software version number.
2. * * Fault symptoms and parts * *:
-Provide a detailed description of the symptoms of the malfunction, including abnormal sounds, odors, vibrations, etc.
-Identify the specific location of the malfunction, such as the machine body, control system, etc.
3. * * Operation method and program information * *:
-Record the operating mode of the system when a malfunction occurs (such as automatic mode, manual mode, etc.).
-If the fault occurs in automatic mode, record detailed information such as machining program number, program segment number, tool number, etc.
4. * * Alarm display and recording * *:
-If there is an alarm display in the system, record the alarm content and alarm number in detail.
5. * * Work status and environmental conditions * *:
-Record the working status of the machine tool at the time of the malfunction, such as whether it is executing specific functions, whether it is in a paused or emergency stop state, etc.
-Record the environmental conditions, such as temperature, humidity, and whether it is during peak electricity usage.
###2、 Fault analysis
1. * * System self diagnosis * *:
-Utilize the self diagnostic function of the CNC system to check alarm information and preliminarily locate the fault range.
2. * * PLC program logic analysis * *:
-By using the PLC controller embedded in the CNC system, the ladder diagram is used to analyze the electrical control of the machine tool and locate the faulty part.
3. * * Communicate with operators * *:
-Fully communicate with on-site operators to understand the working status, manifestations, consequences, and possible misoperations of the machine tool when a malfunction occurs.
4. * * Mechanical and Electrical Inspection * *:
-Inspect the mechanical components of the machine tool, such as guide rails, bearings, screws, etc., to see if there is any wear or damage.
-Inspect the electrical system, including motors, drivers, cables, etc., to identify potential electrical faults.
###3、 Fault cause determination
1. * * Determine based on alarm information * *:
-Based on the self diagnostic alarm information of the system and in combination with the maintenance manual, determine the possible cause of the malfunction.
2. * * Confirmed through testing * *:
-Use professional tools for testing, such as dial gauges, measuring instruments, etc., to further determine the cause of the malfunction.
3. * * Exclusion method determination * *:
-If it is difficult to directly determine the cause of the malfunction, the elimination method can be used to gradually eliminate possible causes and ultimately determine the true cause of the malfunction.
###4、 Fault repair
1. * * Mechanical component maintenance * *:
-For mechanical component failures such as wear, damage, etc., replace or repair them.
2. * * Electrical component maintenance * *:
-Replace damaged electrical components such as motors, drivers, cables, etc.
-Check and adjust system parameters to ensure the normal operation of the electrical system.
3. * * System Recovery and Testing * *:
-After the repair is completed, restore the system parameters and conduct necessary tests to ensure that the machine tool can operate normally.
4. * * Recording and Feedback * *:
-Record the repair process, replaced components, and repair results, and provide feedback on the repair situation to relevant personnel.
###5、 Precautions
-During the maintenance process, it is important to ensure personnel safety and comply with safety operating procedures.
-For complex faults, it is recommended to seek professional maintenance personnel or technical support.
-Regular maintenance and upkeep of the machine tool to reduce the occurrence of malfunctions.