What is CNC machining of CNC parts? How do they work

2024-12-05 14:34:24

CNC parts CNC Machining, that is, computer numerical control (Computer Numerical Control, referred to as CNC) processing, is the 1 method of using computer-controlled CNC Machine Tools for parts processing. The following is a detailed explanation of CNC machining and its working principle:

Definition of 1. CNC Machining

CNC machining is the 1 kind of advanced machining technology, it through the use of pre-written processing program, control machine cutting along the specified path, so as to achieve the precise processing of the workpiece. This processing method can be based on different product requirements and design requirements for flexible processing, just modify the processing program and adjust the tool, you can achieve the processing of different parts.

The working principle of 2. CNC machining

The working principle of CNC machining can be summarized as the following steps:

Design 3D models of parts:

Engineers first use computer-aided design (CAD) software to create a three-dimensional model of the part. This model contains all the geometry and size information of the part.

preparation of numerical control program:

The design model is then converted into numerical code (e. g., G-code) by computer-aided manufacturing (CAM) software. These codes contain detailed information such as the machining path and cutting parameters, which are used to guide the machine tool for machining.

transmission of nc program:

The written numerical control program is transmitted to the control system of the CNC machine tool through the data transmission interface (such as USB, Ethernet, etc.).

The machine reads and interprets the code:

The control system of the CNC machine reads and interprets these numerical control codes, generates control signals, and drives the various moving parts of the machine (such as spindles, worktables, etc.).

Machine tools for processing:

Under the control of the numerical control system, the moving parts of the machine tool move according to the predetermined trajectory to complete the cutting, drilling, milling and other operations of the workpiece. During the machining process, the CNC system will monitor the position of the tool and workpiece, cutting force and other parameters in real time, and make adjustments when necessary to ensure machining accuracy and quality.

Finish processing and test:

When the machining is completed, the CNC machine will automatically stop the movement, and may be equipped with an online measurement and feedback system to detect and correct the machined parts in real time to ensure that they meet the design requirements.

Features of 3. CNC machining

CNC machining has the following salient features:

High precision: By writing accurate CNC programs and automatic control, CNC machining can achieve high-precision cutting paths and processing parameters to ensure the consistency and repeatability of machining.

High efficiency: CNC machining can automatically complete multiple processing steps, greatly shortening the processing cycle and improving production efficiency.

Flexibility: CNC machining can be flexibly processed according to different product requirements and design requirements. It only needs to modify the machining program and adjust the tool to realize the processing of different parts.

Versatility: CNC machining can realize a variety of processing operations, such as milling, turning, drilling, tapping, etc. A CNC machine tool can complete a variety of processing tasks.

Application fields of 4. CNC machining

CNC machining is widely used in the manufacturing industry, including but not limited to the following areas:

Aerospace: used in the manufacture of aircraft engine blades, fuselage structural parts and other high-precision components.

Automobile manufacturing: used for processing engine parts, body structure parts and molds, etc.

Electronic equipment: used to manufacture small parts such as mobile phone shells, circuit boards, and miniature connectors.

Medical equipment: used for processing artificial joints, surgical instruments and implants and other high-precision medical equipment parts.

Mold manufacturing: used to manufacture molds with high precision and complex surface shapes.