CNC Lathe CK6150 Integral Bed Heavy Cutting Guide Hardening
The use of hard rail CNC lathes is suitable for heavy cutting, large molds and high hardness workpieces. And adopt independent spindle: strong adaptability, high processing precision, high efficiency, reduce labor intensity, stable speed, widely used. The hard rail CNC lathe refers to the casting part that the guide rail and the bed are one, and then the guide rail is processed on the basis of the casting. That is, the shape of the guide rail is cast on the bed, and then the guide rail is processed after quenching and grinding, and the bed and the guide rail are not necessarily integrated, for example, the steel guide rail is nailed to the bed after processing. The sliding contact surface of the hard rail is large, the rigidity is good, the seismic ability is strong, the bearing capacity is strong, and it is suitable for heavy load cutting.
Classification and characteristics of feed motion servo systems for CNC machine tools
The feed motion servo system of CNC machine tools can be divided into open-loop system and closed-loop (semi closed-loop) system according to its control principle. In an open-loop system, without position and speed detection, the motor will drive the feed motion to the desired position based on electrical pulses. The open-loop system uses a stepper motor as the power source, and assumes that as long as a certain number of electrical pulses are input, the machine tool will have corresponding displacement. Due to the lack of detection components, the cost of constructing such a system is lower, but its disadvantage is that once errors occur, they will gradually accumulate. As mentioned earlier, open-loop systems must use stepper motors or electro-hydraulic pulse motors as power sources. Closed loop (semi closed loop) systems require closed-loop control, and from a control principle perspective, there is no difference between closed-loop and semi closed loop systems. In terms of system hardware composition, compared to open-loop systems, closed-loop (semi closed-loop) systems require the use of position detection components and comparators.
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