The most popular modern machine tool normal operat

2022-07-25
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Modern machine tool normal operation testing and calibration technology is indispensable

in order to prevent defects, enterprises need to carry out inspection in accordance with national recognized and accepted standards, such as iso230 standard or asmeb5.54 standard. Therefore, enterprises must have the ability to process documents and ensure the process accuracy of machine tools. Both standards require the use of a ball and laser interferometer to test the accuracy of the machine tool according to the recommended procedures. The purpose of adopting these standards is that the Spanish mtorres industrial group is a company mainly engaged in the design and production of automatic production equipment for composite materials. It does not stipulate that the machine tool must meet a certain precision, but to find out what precision level the machine tool can achieve. The written materials of the parts stipulate that the machine tool accuracy of the enterprise must be able to produce qualified parts, and the accuracy benchmark is set in this place. The test can let you know how high your machine tool can reach. As long as the machine tool can reach that precision benchmark, it has the ability of process processing

modern machine tools are equipped with testing and calibration technology, and can also provide this technology, so that the workshop can ensure the normal operation of the machine tool when the accuracy rate is ≥ 0.05%fs. More and more factories and large workshops have their own laser interferometers and electronic equipment, while small factories can obtain equipment and testing services through various channels, commercialization and leasing at competitive prices. In fact, now they can provide any workshop with telescopic ball bar detectors for rapid testing of machine tools, and the testing task can be completed in only 15min, To maintain the machining accuracy of the machine tool. The geometric accuracy, roundness, stick/slip error, service gain mismatch, vibration, backlash, repetition accuracy and scale mismatch of the machine tool can be accurately evaluated by ball and rod detection. Some ball club software can provide diagnosis of specific errors according to ISO and asmeb5.54 and b5.57 standards, and then provide a common English addition list to list the sources of various errors in the order of overall impact on machine tool accuracy. This enables the machine tool maintenance personnel to deal with the problem directly

the periodic ball club test can keep up with the performance development trend of the machine tool. Preventive maintenance is conducive to making plans in advance before the machine tool deviates from the process processing capacity. In industry, there is a general tendency to calibrate machine tools according to needs rather than according to time. There is no reason to take out a good machine in production for maintenance to calibrate. When any abnormal condition is found, it is still determined by testing the club and the produced parts. Production can continue during testing. The precision and repetition precision of the probe detection on the spot welding machine that can be achieved by today's standard machine tools are close to those in the past. Only CMM can be used to automatically determine the position of parts, and then a working coordinate system can be established. The on-board detection can reduce the setting time, improve the utilization of the spindle, reduce the cost of fixtures and eliminate the non production processing travel time. In terms of complex parts processing, it used to take 45min to debug the fixture, but now the application of the detection device only takes 45s and is completed automatically by CNC. When machining castings or forgings, the detection device can determine the shape of the workpiece, avoid wasting time due to empty cutting, and help determine the best cutting angle of the tool. The control in the process is to use the detection device to monitor the characteristics, size and position of the machine tool in the cutting process, and verify the accurate size relationship between various characteristics of each processing process to avoid problems. The probe can be programmed, and the actual machining results of each stage can be detected according to the program, and then the tool compensation can be realized automatically, especially after rough machining or semi precision machining

reference inspection is to compare the part features with a size template or a datum surface with known position and size. It enables CNC to determine the positioning gap, and then generate an offset to compensate for the gap. Before the key processing, through the detection of the imitation template, CNC can check its own positioning according to the known size of the template, and then program the offset. If the size sample is installed on the machine tool with much lower cost and exposed to the same environmental conditions, the reference test can be used to monitor and compensate the coefficient of thermal expansion. The result is a closed loop process that is not affected by the operator

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