It’s hard to tell if you don’t understand machine tools when you are engaged in machinery. As a small editor who learns machinery intuitively, I have an obligation to let everyone understand what CNC is. This is a very basic knowledge. Although you understand it, you may not have seen it. Such a systematic summary, including CNC machine tool composition, technology chain, product chain, downstream industry chain.
Let’s first watch a very creative video, the process of DMG MORI processing company badge, so that everyone has a sense of closeness to the machine tool:
Numerical control (English name: Numerical Control, abbreviation: NC) technology refers to the technology that uses digital instructions composed of numbers, characters and symbols to realize the motion control of one or more mechanical equipment. Numerical control generally uses a general-purpose or special-purpose computer to realize digital program control, so numerical control is also called Computer Numerical Control, referred to as CNC, and is generally referred to as CNC abroad.
CNC machine control unit
The operation and monitoring of CNC machine tools are all completed in this CNC unit, which is the brain of CNC machine tools. Compared with ordinary machine tools, CNC machine tools have the following characteristics:
High machining accuracy and stable machining quality;
It can carry out multi-coordinate linkage, and can process parts with complex shapes;
When the machining parts are changed, generally only the NC program needs to be changed, which can save production preparation time;
The machine tool itself has high precision and rigidity, can choose favorable processing amount, and has high productivity (generally 3 to 5 times that of ordinary machine tools);
The machine tool has a high degree of automation, which can reduce labor intensity;
The quality requirements for operators are higher, and the technical requirements for maintenance personnel are higher.
Having said that, I can't remember it a bit. Watch a video to rest your brain. The process of processing "aerospace parts" by German Glober. This coquettish knife is intriguing:
CNC machine tool composition, technology chain, product chain, downstream industry chain
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CNC machine
In terms of composition, CNC machine tools are mainly divided into three parts: the main body of the machine tool, the transmission system and the CNC system.
Machine body
The main body of the machine tool is the main component of the machine tool, as well as the hardware of the machine tool. It is an important mechanical accessory part of the machine tool, and it is also the part that is easiest to see with the naked eye, including the bed and base castings, spindle and gearbox, guide rails and slides, Lubrication, chip removal and cooling.
Transmission system
The transmission system is an important "context" of the CNC machine tool, which leads the orderly progress of all parts of the machine tool and completes the work mission of the machine tool. It includes tools, transmission machinery and auxiliary power systems. (1) As far as the tool part is concerned, it includes protection device, tool magazine and tool changer; (2) As the second largest component of the transmission system - the transmission machinery includes three parts: ball screw, linear guide and worm pair; ( 3) The auxiliary power system includes two parts, the hydraulic system and the starting system, which are the power of the CNC machine tool.
CNC system
The CNC system can be said to be the soul of CNC machine tools, and also the most perceptual part of the entire machine tool. It is the essence of the machine tool to complete various functions and operations. CNC systems are basically divided into two categories: (1) drive devices, which include high-speed spindles, torque motors, linear motors, ordinary motors and stepper motors; (2) control and testing devices, including CNC systems, programmable controllers, Feed servo control module, position detection module, etc.
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metal cnc machining
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