Five-axis CNC machining is a numerical control processing technology that can perform processing operations simultaneously in multiple directions. Traditional three-axis CNC machining can only process in the X, Y, and Z three linear directions, while five-axis CNC machining can process in the X, Y, and Z three linear directions, and also in the A and B two rotational directions. 

The main advantage of five-axis CNC machining lies in its ability to process more complex parts, especially those with complex curved surface shapes or requiring processing from multiple angles. By rotating the worktable or the tool head, five-axis CNC machines can perform machining from different angles, thereby achieving higher machining accuracy and better surface quality. 

Five-axis CNC machining is widely used in fields such as aerospace, automotive manufacturing, and mold making. It can be used to process complex turbine blades, automotive body surfaces, and complex concave-convex surfaces in molds. Compared with traditional processing methods, five-axis CNC machining can significantly improve production efficiency and product quality. 

Of course, five-axis CNC machining also has some challenges and limitations. Firstly, five-axis CNC machines are more expensive and require more complex mechanical structures and control systems. Secondly, five-axis machining requires higher programming and operational skills, and thus has higher demands on operators. Additionally, due to the more complex relative motion between the cutting tool and the workpiece during the machining process, the risk of collision may increase, necessitating meticulous process planning and safety measures. 

Overall, five-axis CNC machining is an excellent processing technique that can complete the processing of more complex parts, improve production efficiency and product quality. Its application prospects in the manufacturing industry are broad and it will continue to drive the development of the manufacturing industry. 

Chenju Precision focuses on precision parts processing services, offering 3-axis, 4-axis, and 5-axis CNC machining, turning and milling compound processing, CNC lathe processing, and small-batch parts processing, etc. It excels in complex structural parts and can customize special fixtures and jigs for projects. Each product undergoes at least four full inspection procedures, with a quality pass rate of 99.93%. It provides high-quality small-batch processing customization services, with sample production within 3 days and delivery within 7 days. 

If there are any subsequent projects that require five-axis CNC machining, please send the drawings to this email address for evaluation and quotation: info1@us.cjcncmachining.com

Why does workpiece deformation occur in CNC machining? 

The material and structure of the workpiece will affect its deformation. 

The magnitude of deformation is directly proportional to the complexity of shape, the aspect ratio and the thickness of the wall, and is also directly proportional to the rigidity and stability of the material. Therefore, when designing parts, it is necessary to minimize the influence of these factors on the deformation of the workpiece as much as possible. 

Deformation caused by workpiece clamping 

When clamping the workpiece, the correct clamping points should be selected first, and then the appropriate clamping force should be chosen based on the position of the clamping points. Therefore, it is advisable to make the clamping points and the support points consistent as much as possible, so that the clamping force acts on the support. The clamping points should be as close as possible to the processing surface and be selected at positions where the force is unlikely to cause clamping deformation. 

Deformation caused during workpiece processing 

During the cutting process, the workpiece undergoes elastic deformation in the direction of the cutting force, which is what we commonly refer to as tool deflection. On the one hand, it reduces the resistance caused by the friction between the tool and the workpiece; on the other hand, it enhances the heat dissipation capacity of the tool when cutting the workpiece, thereby reducing the residual internal stress on the workpiece. 

4. Stress-induced deformation after processing 

After processing, the part itself has internal stress. The distribution of these internal stresses is a relatively balanced state, and the shape of the part is relatively stable. However, after removing some materials and heat treatment, the internal stress changes. At this time, the workpiece needs to reach a new force balance, so the shape changes. 
II. How to Solve the Problem of Workpiece Deformation in CNC Machining 

Separating rough and finish machining helps to reduce the influence of cutting force and heat, allowing the deformation of sleeve parts caused by rough machining on CNC lathes to be corrected during finish machining. 

2. Reduce the influence of clamping force. The following measures can be taken to reduce the influence of clamping force: 

When radial clamping is adopted, the clamping force should not be concentrated on a certain radial section of the workpiece, but should be distributed over a larger area to reduce the clamping force per unit area of the workpiece. When positioning by holes, it is advisable to use an opening mandrel for clamping. 
2) The position of the clamping force should be selected at the part with stronger rigidity of the component. 
3) Change the direction of the clamping force and switch from radial clamping to axial clamping. 

3. Reduce the influence of cutting force on deformation. The main measures are as follows: 

Increase the main rake angle and the main relief angle of the cutting tool to make the cutting edge sharp during processing and reduce the radial cutting force. 
2) Separate rough and finish machining to allow the deformation of the sleeve parts caused by rough machining to be corrected during finish machining, and adopt smaller cutting parameters. 

3) Simultaneous processing of the inner and outer cylindrical surfaces enables the cutting forces to cancel each other out. 

4. Reduce the impact of heat treatment deformation. Place heat treatment between rough machining and finish machining. Generally, larger deformations occur in sleeve parts after heat treatment, which can be corrected during finish machining. 

Chenju Precision focuses on precision parts processing services, offering 3-axis, 4-axis, and 5-axis CNC machining, turning and milling compound processing, CNC lathe processing, and small-batch parts processing, etc. It excels in complex structural parts and can customize special fixtures and jigs for projects. Each product undergoes at least four full inspection procedures, with a quality pass rate of 99.93%. It provides high-quality small-batch processing customization services for customers, with sample production within 3 days and delivery within 7 days. 

If there are any subsequent projects that require CNC machining, you can send the drawings to this email address for evaluation and quotation: info1@us.cjcncmachining.com

Machining accuracy refers to the degree of conformity between the actual geometric parameters (size, shape and position) of a part after processing and the ideal geometric parameters. Generally speaking, the higher the degree of conformity, the higher the machining accuracy. In actual processing, it is impossible to make the part exactly the same as the ideal one, and there will always be deviations of different magnitudes. The degree of deviation of the actual geometric parameters of the part after processing from the ideal geometric parameters is called machining error. It was only after consulting our senior machining master from Chenju Precision that I learned about this accuracy issue. 

The factors that affect machining accuracy and cause machining errors can be classified into three aspects: 

1. Errors existing before processing: 
(1) Principle error: Some processing methods inherently contain errors. 

(2) Errors inherent in the machine tool, fixtures and cutting tools themselves; 

(3) Errors during the adjustment of work, fixtures and cutting tools. 

2. Errors caused by physical factors during the cutting process: 

(1) Cutting forces and other forces cause deformation of the process system; 

(2) Cutting heat and other heat sources cause deformation of the process system. 

3. Errors that occur after cutting: 

Deformation caused by the redistribution of internal stress in the workpiece; 
(2) Measurement errors when measuring workpieces. 
The causes of these errors can be summarized as follows: 
(1) Processing principle error 
(2) Geometric errors of the process system 
(3) Errors caused by the deformation of the force on the process system 
(4) Errors caused by thermal deformation of the process system 
(5) Machining errors caused by internal stresses in the workpiece 

(6) Measurement Error 

Chenju Precision focuses on precision parts processing services, offering 3-axis, 4-axis, and 5-axis CNC machining, turning and milling compound processing, CNC lathe processing, and small batch parts processing, etc. It excels in complex structural parts and can customize special fixtures and jigs for projects. Each product undergoes at least four full inspection procedures, with a quality pass rate of 99.93%. It provides high-quality small batch processing customization services for customers, with sample production within 3 days and delivery within 7 days. 

If there are any subsequent projects requiring CNC machining, please send the drawings to this email for evaluation and quotation: info1@us.cjcncmachining.com

Generally, our machining factory does not require customers to disassemble parts after assembly. However, there are exceptions: some customers may request disassembly after assembly and inspection. In such cases, what precautions should we take? What are the requirements for disassembling parts?

Mechanical Part Disassembly Requirements:

1. When disassembling machinery, the operation sequence should be considered in advance according to its structure to avoid reversing the order or resorting to forceful disassembly to save time, which could damage or deform parts.

2. The disassembly sequence should be the reverse of the assembly sequence.

3. During disassembly, the tools used must ensure that qualified parts will not be damaged. It is strictly forbidden to strike the working surface of parts directly with a hammer.

4. The direction of loosening of parts must be clearly identified during disassembly.

5. Disassembled parts must be placed in an orderly and regular manner, and reassembled according to their original structure. Mark the mating parts to avoid confusion. Lead screws and long shafts must be lifted to prevent deformation.

Chenju Precision specializes in precision parts machining services, offering 3-axis, 4-axis, and 5-axis CNC machining, mill-turn machining, CNC lathe machining, and small-batch parts processing. We excel at machining complex workpieces and can customize special fixtures and jigs for projects. Each product undergoes at least four full inspection processes, achieving a 99.93% quality pass rate. We provide high-quality, customized small-batch machining services, with a 3-day sample production time and a 7-day delivery time.

If you have future projects requiring CNC machining, please send your drawings to this email address for an evaluation and quote: info1@us.cjcncmachining.com

What are the main factors affecting machining accuracy?

Machining accuracy refers to the degree of conformity between the actual geometric parameters (size, shape, and position) of a machined part and its ideal geometric parameters. Generally, the higher the degree of conformity, the higher the machining accuracy. However, actual machining cannot perfectly match the ideal part; there will always be deviations of varying sizes. The degree of deviation between the actual geometric parameters of a machined part and its ideal geometric parameters is called machining error.

Regarding this accuracy issue, I consulted a senior machining expert at Chenju Precision.

The factors affecting machining accuracy and causing machining errors can be divided into three aspects:

1. Errors existing before machining:

(1) Principle errors: Some machining methods inherently contain errors;

(2) Errors inherent in the machine tool, fixture, and cutting tool itself;

(3) Errors during the adjustment of the workpiece, fixture, and cutting tool.

2. Errors caused by physical factors during the cutting process:

(1) Cutting forces and other forces cause deformation of the process system;

(2) Cutting heat and other heat sources cause deformation of the process system.

3. Errors occurring after cutting:

(1) Deformation caused by the redistribution of internal stress in the workpiece;

(2) Measurement errors during workpiece measurement.

The causes of these errors can be summarized as follows:

(1) Machining principle errors

(2) Geometric errors of the process system

(3) Errors caused by deformation of the process system under stress

(4) Errors caused by thermal deformation of the process system

(5) Machining errors caused by internal stress in the workpiece

(6) Measurement errors

If you have subsequent projects requiring machining, please send your drawings to this email address for evaluation and quotation: info1@us.cjcncmachining.com

CNC machining, also known as numerical control milling, is a machine tool developed from general milling machines. The machining processes are basically the same, and their structures are somewhat similar. CNC machining integrates a digital control system into a conventional milling machine, allowing for more precise milling operations under the control of program code. Chenju Precision is a high-tech enterprise specializing in the development and manufacturing of CNC machining, coating equipment, and related equipment, as well as the manufacturing of equipment parts. Its main business includes coating production spare parts, CNC precision parts machining, and batch parts machining.

In addition to the characteristics of conventional milling, CNC machining technology has the following additional features:

1. CNC machining offers strong adaptability and flexibility, capable of machining parts with particularly complex contours or difficult-to-control dimensions, such as mold parts and shell parts.

2. CNC can machine parts that are difficult or impossible to machine with conventional machine tools, such as complex curved parts described by mathematical models and three-dimensional curved surface parts.

3. CNC can machine parts that require multiple machining operations after a single clamping and positioning.

4. CNC machining offers high precision and stable, reliable machining quality. Currently, the pulse equivalent of CNC devices is generally 0.001mm, while high-precision CNC systems can achieve 0.02-0.05mm. Furthermore, CNC machining eliminates operator errors.

5. CNC machining offers a high degree of automation, reducing operator workload and facilitating automated production management.

6. High production efficiency. CNC machining generally does not require specialized fixtures or other specialized equipment. Changing workpieces only requires recalling the machining program stored in the CNC device, setting up the clamping tools, and adjusting the tool data, thus significantly shortening the production cycle.

Secondly, CNC machining combines the functions of milling machines, boring machines, and drilling machines, highly concentrating processes and greatly improving production efficiency. Additionally, the spindle speed and feed rate of CNC machining are continuously variable, facilitating the selection of optimal cutting parameters.

If you require CNC machining for future projects, please send your drawings to this email address for an evaluation and quote: info1@us.cjcncmachining.com

CNC machining is popular because of its many advantages. While CNC machining can guarantee higher productivity and fewer errors than traditional machining, quality inspection remains an indispensable part of the manufacturing process. Quality control and inspection are carried out at every stage of machining. Furthermore, quality assurance is an important aspect here, distinct from quality control. Quality assurance refers to the quality inspection process established by the organization and authorized body. This also includes relevant documentation. Therefore, we can say that quality assurance is the establishment of processes and documentation, while quality control is implemented periodically or as required. Quality control is an important aspect of every industry—whether it's products, parts, processes, tools, or machines. Product quality is paramount in any industry. To meet customer expectations, trade standards, and industry regulations, we use various measuring instruments and tools to control the quality of CNC-machined parts produced in our machining workshop. This article discusses the importance of such quality checks and methods to CNC machining and quality control methods.

1. Machine Tool Accuracy Testing: In this mode, the centering and movement accuracy of the machine tool is checked. Various other parameters, such as the orientation of the spindle, support, axis, etc., are also checked. The spindle should be perpendicular to the worktable. 1. **Axis Angles and Bending:** Axis angles and bending must be accurate. Check linear axes.

2. **Part or Product Testing:** In this mode, check the dimensions and position of parts. This also includes checking parameters such as positioning, surface finish, and shape. Dimensions and geometric tolerances should also be checked according to requirements or applications.

3. **Process Monitoring:** This includes checking the process steps at each stage to avoid process-related errors that could lead to defective products or unnecessary manufacturing delays. The product lifecycle has different stages, starting with conception or conceptualization. Then comes design, feasibility studies, analysis, pilot production, testing, mass production, etc. Quality inspection here involves all levels.

4. **Machining Inspection:** All our machined parts undergo quality control to ensure high precision and accuracy. We focus on detail and customer satisfaction, so our independent inspection department can conduct consistent inspections of each part to ensure that products are of high quality and high precision.

If you have future projects requiring CNC machining, please send drawings to this email address for an evaluation and quote: info1@us.cjcncmachining.com

To prevent corrosion or simply improve appearance, engineers often specify additional finishing processes for some or all of the outer surfaces of metal parts after machining or manufacturing. Furthermore, some of these treatments provide enhanced mechanical or electrical properties, contributing to the overall functionality of the assembly.

1. Improved product precision: After machining, some product surfaces may be rough, leaving significant residual stress, which can reduce product precision and affect the fit between parts. In such cases, surface treatment is necessary.

2. Enhanced wear resistance: If a part interacts with other parts during normal use, prolonged use will increase wear. In this case, surface treatment is also required to extend the part's lifespan.

3. Improved corrosion resistance: Parts used in highly corrosive environments for extended periods require special surface treatments, such as polishing, grinding, and applying anti-corrosion materials. This improves the product's corrosion resistance and lifespan.

Regardless of the reason, each of these eight metal surface finishing processes plays a crucial role in the manufacturing process:

1. Anodizing

Anodizing includes Type I, Type II, and Type III. Anodizing is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of aluminum parts. The aluminum part is the anode (hence the name "anodizing"), and an electric current is passed between it and the cathode (usually a flat aluminum rod) through an electrolyte (most commonly sulfuric acid). The main functions of anodizing are to increase corrosion resistance, abrasion resistance, and adhesion to paints and primers.

2. Metal Plating

Metal plating is a technique in which a chemical bath is used to coat or modify the surface of a substrate with a thin layer of metal (such as PTFE or nickel). Electroplating uses an electric current to diffuse the substrate, while electroless plating employs an autocatalytic practice in which the substrate acts as a catalyst in the reaction. It offers many advantages, such as improved product durability, corrosion resistance, surface abrasion resistance, and appearance. In addition, it is a useful option for coating other metals.

3. Electroless Plating

This process involves applying a uniform layer of metal onto a substrate without the need for an electric charge. Nickel is often used in this process because it provides a uniform thickness on the substrate, even on irregularly shaped objects. Chemical plating is an important process for improving corrosion resistance, oxidation resistance, and wear resistance.

4. Passivation

It is a process used to improve the surface condition of stainless steel by dissolving iron embedded in the surface through forming, machining, or other manufacturing steps. This is achieved by immersing the stainless steel in an acid solution to dissolve residual iron and form a thin oxide layer on the surface. It improves corrosion resistance and maintains the dimensional integrity of parts with tight tolerances.

5. Powder Coating

Powder coating involves melting dry plastic powder onto metal to produce a textured, matte, or glossy coating. It applies the powder to the metal electrostatically and then cures it under heat, allowing it to flow and form a hard "skin."

6. Thermal Blackening

This is a process involving using a machine to coat the surface of a product with a thin layer of black oxide to create a matte black finish with high wear resistance. Thermal blackening is a high-temperature process in which the product is immersed in a series of tanks containing corrosives, cleaning agents, and coolants.

If you have any future projects requiring precision parts machining, please send your drawings to this email address for an evaluation and quote: info1@us.cjcncmachining.com

Machining and CNC machining differ significantly in several aspects. Below is a detailed comparison:

I. Definition and Principles

1. Machining: Machining refers to the process of changing the shape, dimensions, or properties of a workpiece using mechanical equipment. It utilizes lathes, milling machines, drilling machines, and other mechanical equipment to manufacture parts and components of various shapes and specifications.

2. CNC Machining: CNC machining, or Computer Numerical Control machining, is an important component of modern manufacturing technology. It uses computer programs to control machine tools for precise machining, enabling the processing of parts with complex shapes and high precision.

II. Operation Methods

1. Machining: Machining primarily relies on manual operation of machine tools and equipment by workers to complete machining tasks. Workers need a high level of technical skill and rich experience; the operation process is relatively cumbersome and demands a high level of technical expertise from the workers.

2. CNC Machining: CNC machining achieves a high degree of automation and intelligence. Workers only need to write the machining program, and the machine tool can automatically complete the machining process according to the program. This operation method greatly improves machining efficiency and accuracy while reducing the labor intensity of workers.

III. Machining Accuracy and Stability

1. Machining: The machining accuracy and stability of machining are affected by various factors such as the worker's skill level, operating experience, and the machine tool's precision. Therefore, its machining accuracy and stability are relatively low.

2. CNC Machining: CNC machining offers higher machining accuracy and stability. CNC machine tools can precisely control the tool's movement trajectory and cutting parameters during machining, thus achieving high-precision machining. Furthermore, since most operations are completed automatically by the machine, the repeatability of machining quality is also higher.

IV. Machining Range and Adaptability

1. Machining: Machining is limited by machine tools and equipment, resulting in a relatively narrow machining range. For parts with complex shapes or high precision requirements, machining may be insufficient.

2. CNC Machining: CNC machining has a wider machining range. CNC machine tools can adapt to the machining needs of different materials and shapes by changing tools and fixtures, enabling the machining of various complex parts. At the same time, CNC machining also has high adaptability, allowing for easy switching of machining objects and shortening the production preparation cycle.

V. Development Trends and Application Prospects

1. Machining: With the continuous development of modern manufacturing technology, machining will still be used in certain specific fields. However, overall, its application scope and market share may gradually shrink.

2. CNC Machining: CNC machining is gradually becoming the mainstream machining method in modern manufacturing. With the continuous development of computer technology, sensor technology, control technology, and other fields, CNC machining will achieve higher levels of automation, intelligence, and flexibility. This will provide strong support for the development of the manufacturing industry, promoting its development towards greater efficiency and intelligence.

In summary, machining and CNC machining differ significantly in definition, operation methods, machining accuracy and stability, machining range and adaptability, as well as development trends and application prospects. When choosing a machining method, a comprehensive consideration should be made based on specific needs and conditions.

If you have any projects that require CNC machining, please send your drawings to this email address for an evaluation and quote: info1@us.cjcncmachining.com