After the installation of the machine tool and the parameters of the system are completed according to the requirements, it is necessary to complete various action tests, functional tests, dry run and load test during the electromechanical joint adjustment to check whether the machine meets the requirements after the NC transformation.
1. Inspection before empty operation
Visual inspection of the machine before power-on (check the assembly quality of each part of the machine so that they can work normally after power-on).
(1) The important fixed joint surface should be tightly fitted. It should not be inserted when it is inspected with a 0.03 feeler gauge. The end of the sliding guide surface should be inspected with a depth of less than 20 mm with a 0.03 feeler gauge. The important fixed joint surface is the joint surface of the headboard and the bed, the joint surface of the turret base and the slide, the joint surface of the tailstock and the tailstock floor, and the combination of the bed and the bed (stitched bed) Surface, the joint surface of the steel guide rail and the base member.
(2) Carefully check whether each box and each moving part is refueling as required. The oil level in the box shall not be lower than the oil marking line. Is there enough coolant in the cooling box, whether the oil in the hydraulic station or automatic intermittent lubrication device reaches the oil level specified by the oil level indicator, whether the switches and components in the electrical control box are normal, and whether the integrated circuit boards are inserted In place, the centralized lubrication device is energized to make the lubrication parts and the lubricating oil line full of lubricating oil.
4. Dry running test
(1) Main motion mechanism operation test
In the non-cutting state, the temperature change and no-load power of the spindle running time are tested. The main motion machine of the machine tool is driven by the low, medium and high speeds. The step-variable speed is not less than 2 minutes for all speeds. The maximum speed is not less than 1 hour, so that the spindle bearings reach a stable temperature. Check that the temperature of the spindle bearings does not exceed 70 °C.
(2) Continuous air running test
Use the NC program to command all functions to perform (without cutting) continuous motion and swing tests. Its exercise time is no more than 15 minutes. At the end of each cycle, the parking is stopped, and the Songka work is simulated. The parking is not more than one minute, and the operation is continuously operated for 48h to 72h according to different requirements of the customer.
5, trial cut
After the geometrical accuracy and motion accuracy of the machine tool meet the requirements, the workpiece should be machined according to the corresponding standard and the self-standard to detect the machining performance after the numerical control transformation of the machine tool. In addition to the necessary finishing, it is necessary to carry out a certain load test to check the stability of its accuracy.
After the above tests meet the requirements, the joint adjustment work after the numerical control transformation of the machine tool is completed.
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