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Often, I hear some engineer and designer friends complaining that it's too difficult to find a suitable precision parts processing factory! Either the tolerance is not up to standard, or some materials cannot be processed, or surface treatment is not provided. They have tried one factory after another but still haven't found a comprehensive and cooperative precision parts processing factory. As a precision parts processing factory with 18 years of experience, Chenju Precision offers you some tips:
First, when choosing a precision parts processing factory, pay attention to their processing equipment. The more imported the equipment is, the higher the precision will be. Some domestic and relatively cheaper CNC equipment cannot process hard materials like stainless steel, and can only handle some plastics and relatively soft aluminum alloy materials.
Second, look at the inspection equipment of the precision parts processing manufacturer. High-quality manufacturers usually have three-dimensional measuring machines, height gauges, micrometers, pin gauges, plug gauges and other precision inspection equipment. It is best to have ISO9001 quality certification. Only with good inspection tools and systems can precise products be processed.
Thirdly, sales personnel must have rich experience in precision parts processing and knowledge of surface treatment processes. Only in this way can they communicate effectively and quickly with customers without having to relay information through engineers again and again. They should also have a pioneering spirit towards some unexplored surface treatment technologies, so as to help customers solve problems effectively.
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.
What are the differences between CNC machining and traditional lathe machining?
In terms of processing techniques, traditional machining can handle positioning, clamping, tools, and cutting simply. However, CNC machining is more complex but can process multiple parts simultaneously with high precision.
2. In terms of clamping; in traditional machining, the processing capacity of the machine tool itself is limited, and multiple clamping operations are required. However, in most cases of CNC machining, special fixtures are not needed, which results in lower costs.
CNC machining evolved from traditional manual machining and is a new type of numerical control machine tool processing based on ordinary machine tools and computer numerical control technology as well as computer-aided 3D design and development.
Due to the continuous development of technology, there is an increasing demand for precision parts in modern industrial products. The complexity and precision requirements of parts are getting higher and higher. Therefore, automated CNC machining has become the trend of industry development. The following text will introduce the differences between CNC machining and traditional manual machining.
In terms of processing technology, in traditional manual machining, aspects such as positioning, clamping, tool selection, and cutting can all be handled simply. However, CNC machining is more complex. These factors need to be considered in the numerical control program. Even for the same processing task, CNC machining has multiple solutions. It can process multiple machining parts simultaneously, and the processing accuracy can reach as high as ±0.01mm, which is unattainable by ordinary machining.
In terms of clamping technology, in conventional machining, due to the limited processing capacity of the machine tool itself, multiple clamping operations are required during processing. Moreover, special fixtures are needed, which leads to higher fixture costs and increases production costs indirectly. However, in CNC machining, positioning and clamping are adjusted with instruments, and in most cases, special fixtures are not necessary, thus resulting in lower costs.
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.
What are the differences between three-axis CNC machining and five-axis CNC machining?
In modern manufacturing, the development of numerical control (NC) machining technology has continuously enhanced the production efficiency and precision of components. Among them, three-axis CNC machining and five-axis CNC machining are two commonly used methods at present. They have certain differences in process characteristics, application fields, and equipment investment, gradually becoming the focus of attention in the industry.
Three-axis machining is a relatively traditional CNC processing mode. As the name suggests, the tool mainly moves along the X, Y, and Z directions during the processing. This method is suitable for the processing of structures such as planes, grooves, and holes. The operation is relatively mature, and the equipment cost is relatively low, so it still has a large market demand in general parts manufacturing. However, when three-axis CNC machining is faced with complex structures and many curved surfaces, it often needs to complete the processing by multiple clamping or adjusting the workpiece posture, thereby increasing the production cycle to a certain extent.
In comparison, five-axis machining demonstrates more advantages in terms of process flexibility. Five-axis equipment not only has linear movements in the X, Y, and Z directions but also adds two rotational axes, allowing the cutting tool to approach the workpiece from more angles. This feature makes it more efficient in processing complex curved surface parts, and it has been widely applied in fields such as aerospace, medical devices, and precision molds. By reducing the need for multiple workpiece setups, five-axis CNC machining can to some extent lower the accumulation of errors and help improve the surface quality of products.
In terms of cost input, three-axis processing equipment has a relatively moderate price, and its maintenance and operation requirements are relatively simple, which is suitable for the daily production needs of most enterprises. Five-axis CNC processing equipment usually requires more funds and professional technical personnel support in procurement and maintenance, but its comprehensive value demonstrated in efficiency and precision makes more and more manufacturing enterprises regard it as an important investment direction to enhance their competitiveness.
Overall, three-axis and five-axis machining each have their own characteristics. In the future development of the manufacturing industry, they are likely to continue to be applied in parallel. How to flexibly apply different processes according to industry changes will become an important issue for enterprises to achieve sustainable development.
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.
What are the precautions for CNC machining of magnesium alloys?
I. Overview of CNC Machining of Magnesium Alloys
Machining of magnesium alloys with Computer Numerical Control (CNC) refers to the precise cutting, milling, drilling and other processing techniques carried out on magnesium alloy materials using CNC machine tools to produce components with specific shapes, sizes and surface qualities. Magnesium alloys, with their light weight, high strength and excellent machinability, are widely used in aerospace, automotive, electronic products and other fields. Through CNC machining, the precision and performance of magnesium alloy parts can be further enhanced to meet the high standards of modern industry.
II. Precautions for CNC Machining of Magnesium Alloy
Safety protection
Due to the flammability of magnesium alloys, the chips and dust produced during processing are highly prone to causing fires. Therefore, the processing workshop must be equipped with effective fire extinguishing equipment and safety protection measures. Operators also need to wear protective clothing and glasses that comply with regulations to ensure personal safety.
2. Selection of Process Parameters
Reasonable process parameters are crucial for ensuring the quality of CNC machining of magnesium alloys. These include cutting speed, feed rate, and cutting depth, all of which need to be finely adjusted based on the specific material properties, tool type, and machine performance. Excessively high cutting speed or feed rate may lead to accelerated tool wear, and even cause workpiece deformation or burning.
Selecting the appropriate cutting tools for magnesium alloy processing is the key to improving processing efficiency and product quality. Tools with high hardness, good wear resistance and anti-bonding properties should be given priority. At the same time, the wear of the cutting tools should be regularly inspected, and they should be replaced or reground in a timely manner to maintain their sharpness.
During the CNC machining of magnesium alloys, effective cooling and lubrication not only can lower the temperature of the cutting tool, reduce wear, but also enhance the efficiency of chip removal and prevent chip clogging. Generally, special cutting fluids are used for cooling and lubrication, and the selection of cutting fluids should be based on the processing conditions and material properties.
After the CNC processing of magnesium alloy is completed, further surface treatment of the workpiece may be required to enhance its corrosion resistance and aesthetic appeal. Common surface treatment methods include anodizing, electroplating, and chemical conversion coatings, etc. When choosing an appropriate surface treatment process, factors such as the product's usage environment, aesthetic requirements, and cost should be comprehensively considered.
Chenju Precision specializes in 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.
Five-axis machining (5 Axis Machining) is a numerical control machine tool technology that achieves complex surface processing through the linkage of three linear axes X, Y, and Z and two rotational axes. This process involves moving the cutting tool or different parts simultaneously on five different axes using CNC. This provides space for the production of very complex parts, which is why 5-axis CNC machining is very common in aerospace affairs.
One of the key factors that significantly affect the operation of 5-axis CNC machines is the need to enhance proficiency and reduce the production time from the start to the completion of the practical process.
The function of avoiding collision by fixing the part on the equipment through the rotary worktable or cutting tool provides space for the geometric shape of the part to approach quickly, which is another factor. Finally, by rotating the worktable or cutting equipment to maintain the best cutting position and uniform chip load, the service life of the equipment can be extended or prolonged.
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-structured workpieces 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.
Five-axis CNC machining: Five forms
The first type is the double-head return method, where the two rotational coordinates directly control the direction of the tool axis.
The second one is the drooping rotary head type, with two coordinate axes at the top of the cutter, but the rotary axis is not perpendicular to the linear axis.
The third one is the dual turntable mode, where two rotational coordinates directly control spatial rotation.
The fourth one is the drooping worktable. There are two axes on the worktable, but the rotating axis is not perpendicular to this axis.
The fifth one is a swing starting from a rotation, with two rotational coordinates, one on the tool and the other on the workpiece.
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.
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.
Why does workpiece deformation occur in CNC machining?
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
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:
3. Reduce the influence of cutting force on deformation. The main measures are as follows:
3) Simultaneous processing of the inner and outer cylindrical surfaces enables the cutting forces to cancel each other out.
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.
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:
(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;(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.
In ChenJu Precision, our technical sales staff will response to your custom CNC machining parts within 30 minutes with 1-to-1 online service. you will get the professional advice and save you R&D time.
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