Processing Objects of CNC Machine Tools
In metal processing, all rotary parts processed on universal lathe, which can also be used on CNC lathe. However, numerical control lathe is with high machining precision, can process straightline and arc interpolation, and with the characteristics of automatic transmission in metal processing, and its technology scope is far wider than universal lathe.
CNC lathe has good rigidity, and the manufacturing and toolsetting high precision is higher, which can accurately and conveniently go into artificial compensation and automatic compensation, so the parts can be processed with high dimension accuracy. In addition, the numerical control turning tool motion is done by high precision interpolation motion and servodrive, coupled with rigid and its high precision, so it can work on the generatrix straightness, roundness and cylindricity. For arc and other curve contour, the processed parts shape is much higher than copying lathe, compared with drawings required on the geometry of the proximity.
CNC lathe has constant linear velocity cutting function, so you can choose the best linear velocity for cutting cone and end face, which makes the turning surface roughness value small and consistent, after processing, the surface roughness value is small.
CNC lathes can not only turn any equal lead straight, taper and end thread, but also can turn smooth convergence threads change between two changeable lead. When CNC lathe turning threads, spindle turning doesn’t need to alternate like universal lathe, because it can circulate tool by tool without pause, until finished, so the efficiency of CNC lathe thread is very high.
Advantages of CNC Lathe
Programmable logic Controller (Programmable Logical Controller, hereinafter referred to as PLC) is a kind of general automatic control device onthe basis of processors, also known as the Programmable Controller (Programmable Controller, referred to as PC) or Programmable Machine Controller (Programmable Machine Controller, PMC), which is used for completing various Logical operations and the sequence control of CNC Machine tools, such as Machine tool start-stop, workpiece clamping, tool changing, and some other auxiliary motions of the cooling fluid switch, etc. PLC in CNC system has also takes machine tool operation panel instructions: On the one hand, control of machine toolaction direct; On the other hand, sent the instructions to CNC for processing. PLC in the CNC system has built-in type and independent type. Build-In type PLC and CNC were designed together, also called integrated, which is a part of the CNC; Independent type PLC was produced by an independent professional factory, also known as a type of exterior installation.
Numerical control machine tool operation is achieved by man-machine operation panel, and man-machine operation panel consists of anumerical control panels and machine tools.
Numerical control panel is the numerical control system operation panel, drawn in by a display and a Manual data (Manual Data Input, named as MDI) keyboard, also known as the MD panel. Under Monitors, it always set menu, which is used to select the menu. Keyboard also can be used for users to set, except for the various symbols, Numbers, and the function. The user can manage the system to input related data, storage, edit and modify through keyboard and display. In the processing, the screen can display the system status and fault diagnosis dynamically. In addition, the CNC program and the data can be controlled by disk or communication interface box.
Machine tool operation panel is mainly used to the operation of the machine tool under manual mode and the automatic mode. On it, there are all kinds of button and select switch, used in machine tools and auxiliary loaded in the start-up, the choice of processing ways, speed ratio, etc.; and digital tube and signal display, etc. Medium and small operation panel of CNC machine tool and numerical control panel often made into a whole, but it has obvious boundaries between them. CNC system communication interface, such as serial interface, always sets on the machine tool operation panel.
