CNC machining is a manufacturing process that uses computer-controlled machine tools to cut, punch, drill, mill, turn, grind, etc. It is a high-precision, high-efficiency, and highly automated processing method.
Shanghai Yixing offers a wide range of custom CNC machining services, including 3, 4, and 5-axis CNC milling and CNC turning, CNC milling and turning compound, grinding, EDM, and others. We use state-of-the-art technology and the latest machines to provide our customers with the best results. What’s more, we are proud to offer unparalleled speed and no minimum order quantity (MOQ) on all our services, making it easy to find the perfect solution for your needs.
If you have other manufacturing processes needed in your project like sheet metal stamping, welding, injection molding, casting, forging, surface treatment etc, we can also do that. Contact with us for your comprehensive project!
1. CNC Turning
Turning is the process of fixing a workpiece onto a rotating workpiece clamping device, and then gradually cutting the material on the workpiece using a tool to obtain the desired shape and size. This processing method is suitable for manufacturing cylindrical parts, such as shafts and sleeves. The method of turning and the selection of cutting tools affect the shape and surface roughness of the final product.
Turning can be divided into different types, including outer circle turning, inner circle turning, turning flat surfaces, turning threads, etc. Cylindrical turning is commonly used for machining shapes such as shafts, cylinders, and cones; In internal turning, the tool enters the inner hole of the workpiece and processes the diameter and surface of the inner hole to the required size and accuracy; Turning a flat surface is usually used to create a flat surface, such as the base or end face of a part; Turning threads is the process of gradually cutting the shape of threads, including internal and external threads, by moving the cutting edge of the tool relative to the surface of the workpiece.
2. CNC Milling
Milling machining involves cutting materials on the surface of a workpiece by rotating the tool. By controlling the movement of the tool, complex shaped parts such as flat surfaces, concave convex surfaces, and gears can be manufactured. Milling includes flat milling, end milling, end milling, gear milling, contour milling, etc. Each method is suitable for different processing needs.
In flat milling, the cutting edge of the tool cuts on the surface of the workpiece to obtain a flat surface; End milling is commonly used to process grooves and holes along the height direction of the workpiece; End milling is cutting on the side of a workpiece, commonly used for machining contours, grooves, and edges; Gear milling usually uses special cutting tools with cutting edges to cut the tooth profile of the gear; Profile milling is used to process complex curves or contour shapes, and the path of the tool is precisely controlled based on the contour.
3. CNC Milling and Turning Compound
From the name, it can be understood that it is a composite machine tool that includes all the functional characteristics of CNC lathes and CNC milling machines. The main functions include turning milling composite, turning milling grinding composite, and milling grinding composite. The purpose of composite is to enable a machine tool to have multiple functionalities. It can complete multiple tasks with one clamping, improve processing efficiency and accuracy, because it combines the characteristics of a CNC lathe with the needs of a single machine, greatly reducing land area and lowering rental and other financial costs.
4. 5-axis CNC Machining
5 axis machining is a machining center with high technological content and precision, specifically designed for processing complex surfaces. The 5 axis machining center has five axes, x, y, z, a, and c. The xyz and ac axes form a five axis linkage machining, specializing in spatial surface machining, irregular machining, hollow machining, punching, oblique drilling, oblique cutting, etc. The five axis linkage CNC machining center system is the only means to solve the machining of impellers, blades, marine propellers, heavy-duty generator rotors, turbine rotors, large diesel engine crankshafts, and so on.
5. Electric Discharge Machining (EDM)
Electrical discharge machining (EDM) uses arc discharge to cut and process conductive materials to obtain high-precision and complex shaped parts, such as molds and tools. It is commonly used in the manufacturing of molds, plastic injection molds, aircraft engine parts, medical devices, and other fields. Electrical discharge machining is commonly used to process hard, brittle, or high hardness materials that are difficult to cut using traditional mechanical machining methods, such as tool steel, hard alloys, titanium alloys, etc.
Besides these services, we also provide drilling, grinding, boring, planing, broaching services. If you have machining projects, feel free to send us drawings for analysis.
Almost all metals can be used for machining, and selecting the appropriate material for machining requires consideration of many factors, such as material rigidity, stability, processing performance, rust prevention treatment, material cost, and so on. If you don't know what materials are suitable for your product, you can seek advice from our engineers. We have over 15 years of experience in metal and plastic machining, and have a deep understanding of the properties of various materials. We can recommend suitable materials for your projects.
| Material | Grade |
| Steel | 1018,1045,1215,4140,4340,8620,4130, A36 etc |
| Aluminum | AL6061, AL5052, AL2024, AL6063,AL7075,AL7050,AL7082 etc |
| Stainless steel | SS303,SS416,SS304,SS420 ,SS316L,SS430, SS2205 Duplex,SS17-4 , SS440C, 15-5, SS301 etc |
| Copper | H62,H65,H70,H80,H90 etc |
| Brass | C360,260,C932,M07 etc |
| Plastic | ABS,PEEK, Acetal [Delrin], PP, Acrylic, Polycarbonate, G-10 Garolite, PTFE [Teflon], Nylon 6/6, PE, etc |
| Titanium | Grade 1,Grade 2,Grade 5, 6Al-4V, etc |
| Special teel | Tool Steel,Tungsten steel,Bearing steel, Manganese steel,Die steel,Molybdenum steel, High speed steel ,Tungsten chromium steel |
Shanghai Yixing not provides machining parts but also provide many kinds of surface treatment to complete the customers’ projects. If your desired surface is not in the list, please contact with us and we can source for you.
Advantages:
High precision: CNC machining can achieve very high machining accuracy, usually within the range of a few micrometers. This makes CNC machining very suitable for industries that require high-precision parts, such as aerospace, medical devices, etc.
High repeatability: As CNC machining is controlled through computer programs, it can ensure that each part has the same size and shape. This is very important for mass production, as it can improve production efficiency and reduce human errors.
Multifunctionality: CNC machine tools can perform various types of machining operations, such as milling, turning, drilling, cutting, etc. This makes CNC machining very flexible and can meet the needs of different industries and applications.
High degree of automation: During CNC machining, operators only need to write programs and monitor the operation of the machine tool, without directly participating in the machining process. This reduces labor costs and allows for continuous processing without human intervention.
High processing efficiency: CNC machine tools can process at higher speeds and feed rates, thereby improving production efficiency. In addition, due to its high degree of automation, it can reduce human errors and downtime, further improving processing efficiency.
Challenges:
High cost: The purchase and maintenance costs of CNC machine tools are relatively high. In addition, it is necessary to train operators to write programs and operate machine tools, which also increases training costs.
High requirements for operators: CNC machining requires operators to have certain programming and machine operation skills. For operators without relevant experience, learning and mastering these skills may require some time and effort.
Restricted materials and dimensions: Some special materials (such as glass, ceramics, etc.) and large workpieces may not be suitable for CNC machining. In addition, due to the limitations of machine tool size, ultra large workpieces cannot be machined by CNC.
Professional maintenance is required: CNC machine tools require regular maintenance and upkeep to ensure their normal operation and accuracy. This requires professional technical personnel for maintenance, which increases maintenance costs and workload.
As an expert in CNC machining, Shanghai Yixing provides a wide range of sheet metal services, like 3, 4, and 5-axis CNC milling and CNC turning, CNC milling and turning compound, grinding, EDM etc. Surface treatment can also be done here per your requirement. You can find full services here and no need to separate the projects between different suppliers.
We have no MOQ. We can support from prototypes to mass production no matter it is 1pc or 100,000pcs. Many customers choose us for prototyping first to verify their design and then ask us to do mass production. We make sure the quality in sample period and mass production period are the same.
Our cost is 35%-50% lower than western countries due to our high efficiency, cost control and low labor cost. We aim to save cost for customers and grow with them together.
Workpiece motion: core differences
The main difference between CNC turning and CNC milling is the movement of the workpiece. In CNC turning, the workpiece rotates while the cutting tool remains stationary. This process can create axisymmetric parts with incredible precision and smooth surfaces.
CNC milling involves fixing the workpiece while the cutting tool moves on multiple axes. This process can produce parts with complex geometric shapes and details, which cannot be achieved solely by turning.
Multifunctionality of part geometry
There are significant differences in the versatility of CNC turning and CNC milling, especially in terms of part geometry. CNC turning excels in manufacturing axisymmetric parts such as cylinders, cones, and discs, while CNC milling offers a wider range of possibilities.
CNC milling can produce complex shapes, cavities, grooves, and complex 3D features, making it the preferred choice for parts that require more refined design.
Achieve perfect surface finish
Both CNC turning and CNC milling can achieve high-quality surface finish, but the properties of these finishes may differ. The continuous rotation of the workpiece in CNC turning usually produces a smoother and more polished surface effect.
In contrast, CNC milling may leave tool marks, depending on the milling strategy and the cutting tool used. However, with the correct tools and parameters, CNC milling can also achieve excellent surface smoothness.
Tools and settings: time and cost considerations
In terms of tools and settings, CNC turning usually has the upper hand. Requires fewer tools and the setup process is usually faster and simpler. In contrast, CNC milling may require multiple cutting tools to achieve the required complex geometric shapes, which increases setup time and cost.
General CNC Machining Tolerances on metal to +/ 0.005"(+/0.127 mm) following lSO 2768 unless otherwise specified. CNC Plastics and composites will be +/ 0.010"(+/0.254 mm)
CNC Precision Machining Tolerances can be down to +.0002'(0.005mm). Yixing can manufacture and inspect to tight tolerances per your drawing specifications.
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