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The core control chip model of NC automatic feeding machine varies depending on the specific purpose of different manufacturers and equipment. The following are some common core control chips and their characteristics that may be used for NC automatic feeding machines.

1、 PLC (Programmable Logic Controller) chip

Siemens S7-1200 series

This is a chip widely used in the field of industrial automation control. It has powerful logical processing capabilities and can accurately control various actions of the feeder. For example, in terms of feeding length control, it can accurately record the number of motor rotations through a high-speed counter module, thereby accurately calculating the feeding length. Its programming environment (such as TIA Portal) is intuitive and feature rich, allowing engineers to easily write control programs and implement complex feeding logic, such as setting different feeding speeds and lengths according to different product models.

The S7-1200 series also supports multiple communication protocols, such as Profinet. This allows the feeder to easily communicate with other automation equipment, such as data exchange with processing machines on the production line, achieving collaborative work. For example, when the machining speed of the machine tool changes, the feeding machine can adjust the feeding speed in a timely manner based on the received signal.

Mitsubishi FX5U series

This chip is also an excellent representative in PLC. It has a built-in high-speed pulse output function, which is crucial for controlling the motor driver of the feeder. By sending precise pulse signals, high-precision speed regulation and positioning of the motor can be achieved. In terms of controlling feeding accuracy, it can achieve a positioning accuracy of ± 0.01mm, which can meet the needs of most high-precision feeding.

The Mitsubishi FX5U series has good scalability and can be expanded by adding various modules such as analog input/output modules, communication modules, etc. This allows the feeder to connect more types of sensors, such as analog sensors used to detect material thickness, and can transmit data to the upper computer for remote monitoring and management.

2、 Single chip microcontroller chip

STC89C52 series

This is a microcontroller based on the 8051 core, with high cost-effectiveness. It integrates rich timers and interrupt resources internally. In NC automatic feeding machines, timers can be used to accurately control the time interval of feeding, thereby controlling the feeding speed. For example, by setting the initial value of the timer to generate interrupts at regular intervals, the motor drive circuit can be controlled in the interrupt service program to achieve stable feeding.

STC89C52 also has a certain storage space, which can store the basic parameters of the feeder and simple control programs. Although its computing speed is slightly slower compared to some high-end chips, it is an economical choice for some feeding machine application scenarios that do not require extremely high speed, such as simple feeding equipment in small processing plants.

In short, the core control chip models of NC automatic feeding machines are diverse, and manufacturers need to choose the appropriate chip based on specific performance requirements, cost budget, and application scenarios of the feeding machine.