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.