CNC machine tool processing objects and usage conditions
Processing object
In hardware processing, all rotating parts that can be clamped on ordinary lathes can be processed on CNC lathes. However, CNC lathes have the characteristics of high machining accuracy, linear and arc interpolation, and automatic speed change during hardware processing. Its process range is much wider than ordinary machine tools.
The CNC lathe has good rigidity, high precision in manufacturing and tool set, and can easily and accurately enter manual compensation and automatic compensation, so it can process parts with high dimensional accuracy. In addition, the tool movement of CNC turning is realized by high-precision interpolation movement and servo drive. In addition to the rigidity of the machine tool and high manufacturing accuracy, it can process the shape accuracy of bus straightness, roundness, cylindricity, etc. Demanding parts. For arcs and other curved contours, the degree of closeness between the processed shape and the geometrical shape required on the drawing is much higher than that of the profiling lathe.
The CNC lathe has a constant linear speed cutting function, so the best linear speed can be selected to cut the tapered surface and the end surface so that the surface roughness value after turning is small and consistent, and the surface roughness value is small and uniform.
The CNC lathe can not only turn any straight, tapered, and end-face threads of equal lead but also can turn threads with a smooth transition between variable lead and variable lead. When the CNC lathe is turning the thread, the spindle rotation does not need to be alternately changed like an ordinary lathe. It can cycle one cut after another without stopping until it is completed, so the efficiency of the CNC lathe thread is very high.
Conditions of Use
The normal use of CNC lathes must meet the following conditions. The power supply voltage at the location of the machine tool has small fluctuations, the ambient temperature is less than 30 degrees, and the relative temperature is less than 80%.
Environmental requirements
The location of the machine tool should be far away from the source of vibration, direct sunlight and heat radiation should be avoided, and humidity and airflow should be avoided. If there is a vibration source near the machine tool, an anti-vibration trench should be set around the machine tool. Otherwise, it will directly affect the machining accuracy and stability of the machine tool, and cause poor contact of electronic components, failures, and affect the reliability of the machine tool.
Power requirements
Generally, CNC lathes are installed in machining workshops. Not only the environmental temperature change greatly, the use conditions are poor, but also there are many kinds of electromechanical equipment, resulting in large fluctuations in the power grid. Therefore, the location where the CNC lathe is installed requires strict control of the power supply voltage. The power supply voltage fluctuation must be within the allowable range and remain relatively stable. Otherwise, it will affect the normal operation of the CNC system.
Temperature condition
The ambient temperature of the CNC lathe is less than 30 degrees Celsius, and the relative temperature is less than 80%. Generally speaking, an exhaust fan or air cooler is arranged inside the numerical control electric control box to keep the electronic components, especially the central processing unit's working temperature constant or the temperature difference changes little. Excessive temperature and humidity will reduce the life of control system components and cause more failures. The increase in temperature and humidity and the increase in dust will cause adhesion on the integrated circuit board and cause short circuits.
Standard use of machine tools
When using the machine tool, the user is not allowed to change the parameters set by the manufacturer in the control system at will. The setting of these parameters is directly related to the dynamic characteristics of each part of the machine tool. Only the value of the gap compensation parameter can be adjusted according to the actual situation.
The user cannot replace the machine tool accessories at will, such as using a hydraulic chuck that exceeds the specification. When setting up accessories, the manufacturer fully considers the matching of various link parameters. Blind replacement causes a mismatch of various link parameters and even causes unexpected accidents.
The pressure of the hydraulic chuck, hydraulic tool rest, hydraulic tailstock, and hydraulic cylinder should be within the allowable stress range and any increase is not allowed.
maintenance
The CNC lathe is a high-precision, high-efficiency automatic machine tool. Equipped with a multi-station turret or power turret, the machine tool has a wide range of processing capabilities and can process linear cylinders, oblique cylinders, arcs, and various threads, grooves, worms, and other complex workpieces. It has linear interpolation, arcs Interpolate various compensation functions, and play a good economic effect in the mass production of complex parts. The maintenance of the inclined bed CNC lathe is analyzed as follows:
In order to ensure the working accuracy of the inclined bed CNC lathe and prolong its service life, it is necessary to carry out reasonable maintenance work on the self-use inclined bed CNC lathe. The maintenance of the lathe directly affects the processing quality and production efficiency of the workpiece. When the Taiwan Taiyu Precision CNC lathe runs for 500 hours, the first level maintenance is required. The maintenance work of the inclined bed CNC lathe is mainly carried out by the operator, and the maintenance worker cooperates. During maintenance, you must first cut off the electric probe, and then perform maintenance according to the maintenance content and requirements.
