CNC (Computer Numerical Control) custom machining services play a crucial role in the 3C (Computers, Communications, and Consumer Electronics) industry.



CNC (Computer Numerical Control) custom machining services





3C Industry



Here are some specific applications of CNC custom machining in 3C electronics:

1. Prototyping and Product Development: CNC machining is extensively used in the prototyping phase of 3C electronics. It allows for the creation of precise and custom components, facilitating rapid prototyping and iterative design improvements before mass production.

2. Customized Casings and Enclosures: CNC machining enables the production of intricate and precisely designed casings, housings, and enclosures for electronic devices. These casings can be tailor-made to fit specific components, ensuring optimal functionality and aesthetics.

3. Printed Circuit Boards (PCBs): CNC machining is used for creating PCBs with high precision. CNC milling and drilling machines can fabricate complex PCB designs, ensuring accurate placement of holes, traces, and components.

4. Heat Sinks and Cooling Systems: In electronic devices, managing heat is crucial for optimal performance and longevity. CNC machining helps create intricate heat sinks and cooling systems with specialized designs to dissipate heat effectively.

5. Connectors and Adapters: Custom CNC machining produces connectors, adapters, and specialized components that facilitate connectivity within electronic devices. These components can be tailored to meet specific device requirements.

6. Button and Control Interfaces: CNC machining enables the creation of precise and customized buttons, knobs, and control interfaces for electronic devices. This ensures ergonomic design and functionality.

Today's machining industry, traditional machining equipment has been unable to meet the quality needs. CNC machine tool equipment replaces ordinary machine tools, and automatic processing equipment such as precision CNC machining and CNC lathe processing replaces traditional machine tools. The following will take you to understand the advantages of CNC machining machine tools and the order of precision mechanical parts processing.




What are the advantages of CNC machine tools?



In the process of machining mechanical parts, CNC machining machine tools have the following advantages:

1.CNC machining center has high precision and high processing quality.CNC machine tools are renowned for their exceptional precision and accuracy. They use computer-controlled movements and specialized software to perform tasks with minimal error margins. Unlike human operators, CNC machines consistently reproduce identical parts to exact specifications.

2.CNC machining parts can be multi-coordinate linkage, can process complex shape parts.CNC machine tools offer remarkable flexibility and versatility compared to traditional manual machines. With the ability to change tooling and adapt to various operations quickly, they are ideal for manufacturing complex and intricate components.

3.CNC machining process change, generally only need to change the numerical control program, can save production preparation time.CNC machine tools offer remarkable time-saving benefits. Traditional manual machining methods are time-consuming and labor-intensive, requiring extensive set-up and constant manual adjustments. In contrast, CNC machines can be easily programmed to perform complex operations accurately, greatly reducing production lead times.And CNC machining machine tool itself has high precision, large rigidity, can choose a favorable processing amount, high productivity (generally 3 to 5 times of ordinary machine tools).

4.CNC machining belongs to CNC machining equipment, high degree of automation, can reduce labor intensity.Although the initial investment in CNC machine tools may be higher than manual machines, they offer substantial long-term cost savings. These machines reduce labor costs since they require fewer operators for operation and supervision. Moreover, CNC machines minimize material wastage by executing precision cuts and reducing human errors, leading to significant material savings.

5.Increased Productivity and Efficiency.One of the most significant advantages of CNC machine tools is their ability to increase productivity and efficiency. These machines can operate around the clock, minimizing production downtime and maximizing output. Once programmed, they can perform complex tasks with minimal supervision, freeing up manpower for other critical areas of production.

CNC machine tools have ushered in a new era of production efficiency, accuracy, and cost-effectiveness. With precision, productivity, flexibility, cost savings, time-saving advantages, and the right skillset, businesses can harness the full potential of CNC machines and stay ahead in the competitive manufacturing industry.






Then the order of precision machinery parts processing is divided into what kinds？


Each processing method has its processing sequence. Our operators need to process in accordance with its processing order, but not disorderly, so that it will have a certain impact on the processed products, or quality problems. Precision machining is one of them, then the order of precision mechanical parts processing is divided into what kinds.



The arrangement of fine parts processing should be based on the structure and blank situation of the parts, as well as the needs of positioning clamping, and the focus is on the rigidity of the workpiece is not destroyed.


The processing of the previous process can not affect the positioning and clamping of the next process, and the processing process of general fine parts in the middle of the cross should also be considered comprehensively;
Stop the inner cavity processing sequence first, and then stop the outer shape processing process;
The process of processing with the same positioning, clamping method or the same knife is best connected and stopped to reduce the number of repeated positioning, the number of tool changes and the number of moving platen. Shenzhen Machining;
In the same device to stop multiple processes, should be arranged first to the workpiece rigid damage process.

Tool concentration sorting method: It is divided into processes according to the tool used, and all the parts that can be completed with the same tool are processed. In the second knife, the third knife to complete the other parts they can complete. This can reduce the number of tool changes, shorten the idle time, reduce unnecessary positioning errors.

Processing parts sorting method: On the processing content of a lot of parts, according to its structural characteristics will be processed local dividends several parts, such as internal shape, shape, surface or plane. Ordinary first processing plane, positioning surface, after processing holes; First processing simple geometric shapes, then processing complex geometric shapes; The parts with lower precision are processed first, and then the parts with higher precision requirements are processed.

In short, the current precision machinery parts processing technology is very advanced, high quality and high production efficiency.

HONSCN Precision has 20 years of cnc machining experience. Specializing in cnc machining, hardware machinery parts processing, automation equipment parts processing. Robot parts processing, UAV parts processing, bicycle parts processing, medical parts processing, etc. It is one of the high-quality suppliers of cnc machining. At present, the company has hundreds of cnc machining centers, grinding machines, milling machines, high-quality high-precision testing equipment, to provide customers with precision and high-quality cnc spare parts processing services.

In the field of machining, after CNC machining process methods and division of processes, the main content of the process route is to rationally arrange these processing methods and processing sequence. In general, CNC machining of mechanical parts includes cutting, heat treatment and auxiliary processes such as surface treatment, cleaning and inspection. The sequence of these processes directly affects the quality, production efficiency and cost of the parts. Therefore, when designing CNC machining routes, the order of cutting, heat treatment and auxiliary processes should be reasonably arranged, and the connection problem between them should be solved.

In addition to the basic steps mentioned above, factors such as material selection, fixture design and equipment selection need to be considered when developing a CNC machining route. Material selection is directly related to the final performance of parts, different materials have different requirements for cutting parameters; The fixture design will affect the stability and accuracy of the parts in the process of processing; Equipment selection needs to determine the type of machine tool suitable for its production needs according to the characteristics of the product.







What do we have to do before arranging the CNC machining process route?


1, the processing method of precision machinery parts should be determined according to the characteristics of the surface. On the basis of familiar with the characteristics of various processing methods, mastering the processing economy and surface roughness, the method that can ensure the processing quality, production efficiency and economy is selected.

2, select the appropriate drawing positioning reference, according to the principle of crude and fine reference selection to reasonably determine the positioning reference of each process.

3, When developing the machining process route of the parts, it is necessary to divide the rough, semi-fine and finishing stages of the parts on the basis of the analysis of the parts, and determine the degree of concentration and dispersion of the process, and reasonably arrange the processing sequence of the surfaces. For complex parts, several schemes can be considered first, and the most reasonable processing scheme can be selected after comparison and analysis.

4, determine the processing allowance and process size and tolerance of each process.

5, select machine tools and workers, clips, quantities, cutting tools. The selection of mechanical equipment should not only ensure the quality of processing, but also be economical and reasonable. Under the conditions of mass production, general machine tools and special jigs should generally be used.

6, Determine the technical requirements and inspection methods of each major process.Determining the cutting amount and time quota of each process is usually decided by the operator for a single small batch production plant. It is generally not specified in the machining process card. However, in the medium batch and mass production plants, in order to ensure the rationality of production and the balance of rhythm, it is required that the cutting amount must be specified, and must not be changed at will.





cnc machining process arrangement


First rough and then fine

The processing accuracy is gradually improved according to the order of rough turning - semi-fine turning - fine turning. The rough lathe can remove most of the machining allowance of the workpiece surface in a short time, thereby increasing the metal removal rate and meeting the requirement of the uniformity of the allowance. If the residual amount left after the rough turning does not meet the finishing requirements, it is necessary to arrange a semi-finishing car for finishing. The fine car needs to ensure that the outline of the part is cut according to the drawing size to ensure the processing accuracy.

Approach first and then far

Under normal circumstances, the parts close to the tool should be processed first, and then the parts far away from the tool to the tool should be processed to shorten the moving distance of the tool and reduce the empty travel time. In the process of turning, it is beneficial to maintain the stiffness of the blank or semi-finished product and improve its cutting conditions.

The principle of internal and external intersection

For parts that have both an inner surface (inner cavity) and an outer surface to be processed, when arranging the processing sequence, the inner and outer surfaces should be roughed first, and then the inner and outer surfaces should be finished. Must not be part of the surface of the part (outer surface or inner surface) after processing, then processing other surfaces (inner surface or outer surface).

Base first principle

Priority should be given to the surface used as the finishing reference. This is because the more accurate the surface of the positioning reference, the smaller the clamping error. For example, when machining shaft parts, the center hole is usually machined first, and then the outer surface and end face are machined with the center hole as the precision basis.

The principle of the first and the second

The main working surface and assembly base surface of the parts should be processed first, so as to find out the modern defects on the main surface in the blank early. The secondary surface can be interspersed, placed on the main machined surface to a certain extent, before the final finishing.

The principle of the face before the hole

The plane outline size of the box and bracket parts is large, and the plane is generally processed first, and then the hole and other sizes are processed. This arrangement of processing sequence, on the one hand with the processed plane positioning, stable and reliable; On the other hand, it is easy to process the hole on the machined plane, and can improve the processing accuracy of the hole, especially when drilling, the axis of the hole is not easy to deviate.



Conclusion


When developing the machining process of parts, it is necessary to select the appropriate processing method, machine tool equipment, clamp measuring tools, blank and technical requirements for workers according to the production type of parts.

How to choose the right CNC machining material？


The materials are wrong, all in vain! In order to produce satisfactory products, the choice of materials is the most basic step and the most critical step. CNC machining can choose a lot of materials, including metal materials, non-metallic materials and composite materials.

Common metal materials include steel, aluminum alloy, copper alloy, stainless steel and so on. Non-metallic materials are engineering plastics, nylon, bakelite, epoxy resin and so on. Composite materials are fiber reinforced plastic, carbon fiber reinforced epoxy resin, glass fiber reinforced aluminum and so on.

Different materials have different physical and mechanical properties, and the correct selection of the right material is critical to the performance, accuracy and durability of the part. Starting from my own experience, this article will share with you how to choose low cost and suitable materials among many processing materials.




Determine the actual application requirements of the product

First, we need to determine the end use of the product and its parts. For example, medical equipment needs to be disinfected, lunch boxes need to be heated in the microwave oven, bearings, gears, etc., need to be used for load-bearing and multiple rotational friction.


Transform the application requirements of the material into the characteristics of the material

After determining the use, starting from the actual application needs of the product, the use of the product is investigated, and its technical requirements and environmental requirements are analyzed, and these needs are transformed into the characteristics of the material. For example, parts of medical equipment may have to withstand the extreme heat of an autoclave; Bearings, gears and other materials have requirements for wear resistance, tensile strength and compressive strength. Mainly can be analyzed from the following points:

01 Environmental Requirements

Analyze the actual use scenario and environment of the product; For example: What is the long-term working temperature of the product, the highest/lowest working temperature, respectively, belonging to high temperature or low temperature? Are there UV protection requirements indoors or outdoors? Is it in a dry environment or a humid, corrosive environment? Etc.

02 Technical Requirements

According to the technical requirements of the product, the required capabilities are analyzed, which can cover a range of application-related factors. Such as: the product needs to have conductive, insulating or anti-static which of the capabilities? Is heat dissipation, thermal conductivity, or flame retardant required? Do you need exposure to chemical solvents? Etc.

03 Physical Performance requirements

Analyze the required physical properties of the part based on the intended use of the product and the environment in which it will be used. For parts subjected to high stress or wear, factors such as strength, toughness and wear resistance are critical; For parts exposed to high temperatures for a long time, good thermal stability is required.

04 Appearance and surface treatment requirements

The market acceptance of the product depends largely on the appearance, the color and transparency of different materials are different, the finish and the corresponding surface treatment are also different. Therefore, according to the aesthetic requirements of the product, the processing materials should be selected.

05 Processing performance considerations

The machining properties of the material will affect the manufacturing process and accuracy of the part. For example, although stainless steel is rust resistant and corrosion resistant, its hardness is high, and it is easy to wear the tool during processing, resulting in very high processing costs, and it is not a good material to process. The plastic hardness is low, but it is easy to soften and deform during the heating process, and the stability is poor, which needs to be selected according to actual needs.


Find materials that match the characteristics

Because the actual application requirements of the product are composed of a number of contents, there may be multiple materials that meet the application requirements of a product; Or the situation where the optimal selection of different application requirements corresponds to different materials; We may end up with several materials that meet our specific requirements. Therefore, once the desired material properties are clearly defined, the remaining selection step is to search for the material that best matches those properties.

The selection of candidate materials begins with a review of material properties data, of course, it is not possible to investigate thousands of applied materials, and there is no need to do so. We can start from the material category, and first decide whether we need metal materials, non-metallic materials or composite materials. Then the previous analysis results, corresponding to the material characteristics, narrow the selection of candidate materials. Finally, the material cost information is used to select the most suitable material for the product from a number of candidate materials.

At present, Honscn has selected and launched a number of materials suitable for processing, which have been a popular choice for our customers.





Introduction to the properties of metal materials


Metallic materials refer to materials with properties such as luster, ductility, easy conduction and heat transfer. Its performance is mainly divided into four aspects, namely: mechanical properties, chemical properties, physical properties, process properties. These properties determine the scope of application of the material and the rationality of the application, which is an important reference for us to choose metal materials.The following will introduce two types of metal materials, aluminum alloy and copper alloy, which have different mechanical properties and processing characteristics.




Aluminium alloy

There are more than 1000 aluminum alloy grades registered in the world, each brand name and meaning are different, different grades of aluminum alloy in hardness, strength, processability, decoration, corrosion resistance, weldability and other mechanical properties and chemical properties there are obvious differences, each has its strengths and weaknesses.

hardness

Hardness refers to its ability to resist scratches or indentations. It has a direct relationship with the chemical composition of the alloy, and different states have different effects on the hardness of aluminum. The hardness directly affects the cutting speed and the type of tool material that can be used in CNC machining.

From the highest hardness that can be achieved, 7 series > 2 series > 6 series > 5 series > 3 series > 1 series.

intensity

Strength refers to its ability to resist deformation and fracture, commonly used indicators include yield strength, tensile strength and so on.

It is an important factor that must be considered in product design, especially when aluminum alloy components are used as structural parts, the appropriate alloy should be selected according to the pressure under.

There is a positive relationship between hardness and strength: the strength of pure aluminum is the lowest, and the strength of 2 series and 7 series heat-treated alloys is the highest.

density

Density refers to its mass per unit volume and is often used to calculate the weight of a material.

Density is an important factor for a variety of different applications. Depending on the application, the density of aluminum will have a significant impact on how it is used. For example, lightweight, high-strength aluminum is ideal for construction and industrial applications.

The density of aluminum is about 2700kg/m³, and the density value of different types of aluminum alloy does not change much.

Corrosion resistance

Corrosion resistance refers to its ability to resist corrosion when in contact with other substances. It includes chemical corrosion resistance, electrochemical corrosion resistance, stress corrosion resistance and other properties.

Corrosion resistance selection principle should be based on its use occasion, high-strength alloy used in a corrosive environment, must use a variety of anti-corrosion composite materials.

In general, the corrosion resistance of series 1 pure aluminum is the best, series 5 performs well, followed by series 3 and 6, and series 2 and 7 are poor.

processability

The machinability includes formability and machinability. Because formability is related to the state, after selecting the grade of aluminum alloy, it is also necessary to consider the strength range of each state, usually high strength materials are not easy to form.

If the aluminum is to be bent, drawn, deep drawing and other forming processes, the formability of the fully annealed material is the best, and on the contrary, the formability of the heat-treated material is the worst.

The machinability of aluminum alloy has a great relationship with the alloy composition, usually higher strength aluminum alloy machinability is better, on the contrary, low strength machinability is poor.

For molds, mechanical parts and other products that need to be cut, the machinability of aluminum alloy is an important consideration.

Welding and bending properties

Most aluminum alloys are welded without problems. In particular, some 5 series aluminum alloys are specially designed for welding considerations; Relatively speaking, some 2 series and 7 series aluminum alloys are more difficult to weld.

In addition, the 5 series aluminum alloy is also the most suitable for bending a class of aluminum alloy products.

Decorative property

When aluminum is applied to decoration or some specific occasions, its surface needs to be processed to obtain the corresponding color and surface organization. This situation requires us to focus on the decorative properties of materials.

Aluminum surface treatment options include anodizing and spraying. In general, materials with good corrosion resistance have excellent surface treatment properties.

Other characteristics

In addition to the above characteristics, there are electrical conductivity, wear resistance, heat resistance and other properties, we need to consider more in the selection of materials.


Copper alloy

Orichalcum



Brass is an alloy of copper and zinc. Brass with different mechanical properties can be obtained by changing the content of zinc in brass. The higher the content of zinc in brass, the higher its strength and slightly lower plasticity.

The zinc content of the brass used in the industry does not exceed 45%, and the zinc content will be brittle and make the alloy performance worse. Adding 1% tin to brass can significantly improve the resistance of brass to seawater and Marine atmosphere corrosion, so it is called "navy brass".

Tin can improve the machinability of brass. Lead brass is commonly referred to as easy to cut national standard copper. The main purpose of adding lead is to improve the machinability and wear resistance, and lead has little effect on the strength of brass. Carving copper is also a kind of lead brass.

Most brasses have good color, processability, ductility, and are easy to electroplate or paint.

Red copper



Copper is pure copper, also known as red copper, has good electrical and thermal conductivity, excellent plasticity, easy hot pressing and cold pressure processing, can be made into plates, rods, tubes, wires, strips, foil and other copper.

A large number of products that require good electrical conductivity such as electrocorroded copper and conductive bars for the manufacture of EDM, magnetic instruments and instruments that must be resistant to magnetic interference, such as compass and aviation instruments.

No matter what kind of material, a single model basically can not meet all the performance requirements of a product at the same time, and it is not necessary. We should set the priority of various performance according to the performance requirements of the product, the use of the environment, the processing process and other factors, reasonable selection of materials, and reasonable control of costs under the premise of ensuring performance.


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CNC machines offer precision machining to all. No matter what type of CNC machine it is that is being used, you can pretty much guarantee that it will offer precision machining that is absolutely unbelievable.
The machine itself is responsible for a lot of the precision; however, the operator and the programmers play a big role as well as the facility itself. Proper temperature control and good conditions allow for accuracy as much as 20 millionths in some instances.
Tolerances of CNC machines completely depend upon the type of CNC machine that is being used to complete the project. Each machine offers different tolerances. Of course a machine that operates off of several different axes will allow for closer, more specific tolerances. The four and five axes machines can produce specifically design parts that need precise measurements in order to work. Very tight tolerances are possible.
Exacting tolerances of 0.00004" to 0.004" is possible. (Otherwise, one to one hundred microns) Because these machines are computer numerical controlled (CNC) the possibility that production can be this precise is easy. No more do operators have to make sure that the placement of the material is precise and so on in order to achieve these standards. The computer technology can grind, cut, sand, etc to the dimensions specified by the program. They will be extremely close if not all the way there.
One of the great benefits of CNC machining is the ability of high tolerances on a repetitive basis. Because the machines are computer operated, repetitive work is easy to perform. The machine keeps running to the programs specifications until the work is complete. Another job that comes months down the road that has the same specifications can be performed easy. It just takes the downloading of the original program and the exact same specifications and tolerances will be repeated with this batch of work as well. Repetitive, high tolerance machining is one of the added benefits of CNC machining.
Tolerances are directly related to the quality of the CNC machines. This is why you will find that different companies who offer CNC machining services can offer different tolerances. Some may offer 0.001" tolerances and others will offer a variety of different tolerances. The higher the quality of the CNC machine and the programs that operate it, the better tolerance that you will be able to get.
Programmers, machinists, operators and the machines, have to work in direct relationship to one another. If all aspects are all the same page, the better the performance. If you have quality programmers and machinists, you will be able to get better performance out of your machines. It takes individuals who are skilled and knowledgeable in the area of CNC machining to perform to the best of the machines ability.
If you have any questions about ask your dealer of the CNC machines. They should be able to answer any questions that you may have and can explain the whole process better to you.