High-precision drum-based CNC lathes utilize a method of monitoring the operating status of actuators to determine the cause of faults. This method is the most widely used in CNC machine tool maintenance. In modern CNC systems, the main parameters of components such as the servo feed system, spindle drive system, and power supply module can be dynamically and statically monitored. These parameters include: input/output voltage, input/output current, setpoint/actual speed, position, and actual load conditions. Furthermore, the status of all input/output signals of the CNC system, including internal relays and timers, can also be checked using the diagnostic parameters of the CNC system.
High-precision drum-type CNC lathes utilize state analysis to quickly identify the cause of faults based on the internal state of the system without the need for instruments or equipment. This method is widely used in CNC machine tool maintenance, and maintenance personnel must master it.
Basic Programming Examples for High-Precision Drum-Based CNC Lathe
(1) Absolute value programming (represented by X and Z), incremental value programming (represented by U and W), or a combination of both can be used.
(2) Diameter direction (X direction) The system defaults to diameter programming, but radius programming can also be used, but the system settings must be changed.
(3) The pulse equivalent in the X direction should be half of that in the Z direction.
(4) Use a fixed loop to simplify programming.
(5) When programming, the tip of the lathe tool is often considered to be a point, but in reality it is an arc. Therefore, when programming the machining program, it is necessary to consider the radius compensation of the tool.
High-precision drum-based CNC lathes possess a wide range of machining capabilities, capable of processing straight cylinders, inclined cylinders, arcs, and various threads. They feature linear interpolation, circular interpolation, and various compensation functions, demonstrating excellent economic efficiency in the mass production of complex parts. After the machine tool's geometric accuracy inspection is passed, the entire machine needs to be cleaned. Use cotton or silk cloth soaked in cleaning agent; cotton yarn or gauze must not be used. Clean off the anti-rust oil or paint applied at the factory to protect the guideways and machined surfaces. Clean the dust from the machine tool's outer surfaces. Apply the specified lubricating oil to all sliding and working surfaces.
For high-precision drum-based CNC lathes, carefully inspect all parts of the machine tool to ensure that oil has been added as required, and that the coolant tank is filled to the required level. Also check that the oil level in the machine tool's hydraulic station and automatic lubrication system is at the level indicated by the oil level indicator.
