CNC machining and manufacturing of metals

1、 Process principles and advantages
Process principle
CNC machining precisely controls the movement of machine tools and cutting of cutting tools through a computer digital control system, and performs cutting, drilling, milling, and other machining operations on metal materials according to pre written machining programs. It can gradually process a piece of raw metal material into parts or products with complex shapes and high-precision dimensions.
advantage
High precision: capable of achieving micrometer level or even higher precision, ensuring the accuracy and consistency of product dimensions. This enables CNC machined metal products to meet various precision demanding application scenarios, such as aerospace, medical equipment, and other fields.
Complex shape processing capability: It can easily process various complex geometric shapes, whether it is curves, surfaces, or parts with multiple features, it can be accurately manufactured. This provides greater freedom for product design, allowing designers to achieve more innovative designs.
High production efficiency: Once the processing program is set, the machine tool can run continuously and automatically, greatly improving production efficiency. Compared to traditional machining methods, CNC machining can produce more products in a shorter amount of time.
Wide material adaptability: suitable for various metal materials, such as aluminum alloy, stainless steel, titanium alloy, etc. Different metal materials can be selected according to the performance requirements and application scenarios of the product, in order to meet the needs of different customers.
2、 Processing flow
Design and Programming
Firstly, based on the customer's needs or product design drawings, professional CAD (computer-aided design) and CAM (computer-aided manufacturing) software are used for product design and machining program writing. In the design process, engineers need to consider factors such as product functionality, structure, and precision requirements, and translate these requirements into specific machining processes and tool paths.
After the completion of the machining program, simulation verification is required to ensure the correctness and feasibility of the program. By simulating the machining process, potential issues such as tool collisions and insufficient machining allowance can be identified in advance, and corresponding adjustments and optimizations can be made.
stores reserve
Select suitable metal materials according to product requirements and cut them into appropriate sizes and shapes as raw materials for processing. In terms of material selection, it is necessary to consider performance indicators such as strength, hardness, corrosion resistance, as well as factors such as cost and processability.
Blank parts usually require pre-treatment before processing, such as removing surface impurities such as oxide scale and oil stains, to ensure processing quality.
Processing operation
Fix the prepared blank parts on the worktable of the CNC machine and ensure that they do not shift during the machining process using fixtures. Then, according to the requirements of the machining program, select the appropriate tool and install it in the tool magazine of the machine tool.
After the machine tool is started, the cutting tool cuts the blank according to the predetermined path and parameters. During the machining process, the machine tool will monitor the position, speed, cutting force and other parameters of the tool in real time, and adjust them based on feedback information to ensure the accuracy and stability of the machining.
For some complex parts, multiple processing steps may be required, such as rough machining to remove most of the material, followed by semi precision machining and precision machining to gradually improve the accuracy and surface quality of the parts.
Quality inspection
After processing, strict quality inspection is required for the product. The testing items include dimensional accuracy, shape accuracy, surface roughness, hardness, etc. Common testing tools and equipment include coordinate measuring instruments, roughness meters, hardness testers, etc.
If quality problems are found in the product during testing, it is necessary to analyze the reasons and take corresponding measures for improvement. For example, if the size exceeds the tolerance, it may be necessary to adjust the machining program or tool parameters and perform machining again.
3、 Product application areas
Aerospace
In the aerospace field, metal parts manufactured by CNC machining are widely used in aircraft engines, fuselage structures, landing gear and other components. These parts usually require high strength, high precision, and high reliability, and CNC machining can meet these strict requirements. For example, key components such as blades and turbine disks in aircraft engines are manufactured through CNC machining.
Automobile manufacturing
The automotive industry is also an important application area for CNC machining of metal products. The cylinder block, cylinder head, crankshaft and other components of automobile engines, as well as some key parts in the chassis system and transmission system, can all be produced using CNC machining technology. Metal parts manufactured by CNC machining can improve the performance and reliability of automobiles while reducing production costs.
medical apparatus and instruments
Medical devices require extremely high precision and quality of products, and CNC machining plays an important role in medical device manufacturing. For example, products such as artificial joints, surgical instruments, dental instruments, etc. all require CNC machining to ensure their accuracy and surface quality, in order to meet the strict standards of the medical industry.
Electronic communication
Metal parts such as casings, heat sinks, and connectors in electronic communication devices are often manufactured using CNC machining. These parts need to have good conductivity, heat dissipation, and mechanical strength, and CNC machining can accurately manufacture these parts according to design requirements, meeting the high-performance requirements of electronic communication devices.
Mold manufacturing
CNC machining is also widely used in mold manufacturing. Molds are important tools used in industrial production for molding, such as injection molds, die-casting molds, etc. Through CNC machining, high-precision and complex shaped molds can be manufactured, ensuring that the produced products have good dimensional accuracy and surface quality.
4、 Quality assurance and after-sales service
quality assurance
We strictly adhere to international quality management system standards, conducting rigorous quality control at every stage from raw material procurement to product delivery. We use high-quality metal materials and establish long-term partnerships with well-known suppliers to ensure stable and reliable quality of raw materials.
During the processing, we use advanced processing equipment and testing methods to comprehensively inspect and monitor each product. Our professional technicians have rich experience and professional knowledge, and are able to promptly identify and solve problems that arise during the production process, ensuring that product quality meets customer requirements.
after-sale service
We are committed to providing customers with high-quality after-sales service. If customers encounter any problems while using our product, we will respond promptly and provide technical support. We can provide product repair, maintenance, replacement and other services according to customer needs.
We will also regularly visit customers to understand their usage and feedback on our products, and continuously improve our products and services to meet their needs and expectations.
In summary, metal products manufactured through CNC machining have advantages such as high precision, high quality, and strong ability to process complex shapes, and are widely used in various fields such as aerospace, automotive manufacturing, medical equipment, and electronic communication. We will continue to adhere to the principle of quality first and customer first, providing customers with high-quality products and services.