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Precision at Work: CNC Advancements in the Electronic Sector

In contemporary social production, most industries have been consistently striving to achieve innovative patterns characterized by higher quality and efficiency. These innovative patterns have placed a demand for the corresponding processing equipment to become even more precise, intelligent, and automated. Guided by this model, CNC processing came into being at the right moment and has crafted many precise and efficient equipment components for a wide range of industries. Today, let's together delve into the application domains of CNC in the electronic industry.


Brief Introduction to Electronics Industry

The electronics industry is a vast global enterprise that consists of numerous distinct divisions. Among them, the business-to-business e-commerce sector, which involves the all-pervasive payment and telecommunications technology utilized for transactions between enterprises, is the largest. This particular sector alone recorded sales of $29 trillion in 2017.

The tech industry, consumer electronics, the semiconductor industry, and power electronics are also other prominent sectors within the electronics industry. In these various sectors of the electronics industry, some of the most commonly fabricated components are transistors, capacitors, semiconductors, diodes, and circuit chips. Popular products, composed of multiple electronic components, include computers, televisions, radios, and smartphones.

Top 3 Applications of CNC in the Electronic Industry

The extensive and diverse array of applications, coupled with the exceptionally high precision that CNC machining offers, make it an extremely valuable manufacturing technology for the electronics industry. CNC machines possess the capability to process not only conductive and non-conductive metals but also an extensive spectrum of plastics.

One of the most salient and significant benefits of this advanced technology is its remarkable speed. CNC machining can be effectively employed to manufacture electronic components within a relatively brief period. There is no need for a tooling stage before commencing production, and this technology does not encounter the quality limitations and constraints that are typically associated with additive manufacturing. Designs can be promptly and efficiently iterated and modified by utilizing CAD software. Moreover, once the toolpaths have been precisely determined by the computer and/or the machinist, only minimal manual operation is required.

A considerable number of electronics manufacturers have a strict demand for precise tolerances for their complex internal components. In such cases, CNC machining is frequently regarded as the most suitable and appropriate technology for fulfilling these exacting requirements.

  • Watch Manufacturing

CNC machining has impacted the way timepieces are crafted, elevating precision and quality to unprecedented levels.


1. Watch Cases

One of the primary areas where CNC technology shines in watch production is in the creation of watch cases. The intricate designs and precise specifications of watch casings require advanced machining capabilities that traditional methods may struggle to achieve. CNC machines excel in this aspect by precisely carving out watch cases from various materials such as stainless steel, titanium, or precious metals with remarkable accuracy and repeatability.

2. Watch Components

Moreover, CNC machining is instrumental in producing the internal components that drive the functionality of a watch. From intricate gears and escapements to delicate hands and indices, CNC technology enables manufacturers to fabricate these tiny yet critical parts with micron-level precision. This level of accuracy is essential for ensuring the proper functioning and longevity of the timepiece.

3. Decoration & Customization

Additionally, CNC technology allows for the customization and personalization of watches to meet the unique preferences of customers. Whether it involves engraving intricate patterns on watch dials or creating bespoke watch components, CNC machines offer the flexibility and precision required to bring personalized designs to life.

From crafting intricate watch components with unparalleled precision to enabling customization and enhancing production efficiency, CNC machining has become an indispensable tool in the creation of high-quality timepieces that define the artistry and precision of watchmaking.

  • Mobile Phone Manufacturing

As can be seen from the above picture, in a mobile phone, many parts need to be processed by CNC, such as the phone's casing and circuit board. Let's introduce in detail how these several parts are processed.


4. Mobile Phone Casing

With people's increasingly strong demands for the appearance and hand feel of mobile phones. Therefore, more demanding requirements have been put forward for the design and processing of mobile phone casings, and the difficulty of selling products will also be greater. Let's first compare the differences between the processing methods of modern mobile phone casings and traditional ones:

Processing type


Processing method


Traditional processing

Mainly plastic

Injection molding, etc.

Low cost, simple structure, and shape

Modern processing

Silicone, glass, metal, etc.

Mold opening, CNC precision milling

High cost, good texture, high precision


As can be seen from the above picture, traditional mobile phone cases were manufactured for practical purposes, with few considerations given to factors such as the product's weight and hand feel. In modern processing, there are very high requirements for the texture, appearance, and quality of mobile phones. Let's now talk about the technology and methods of CNC processing for mobile phone cases.

① First, analyze the processing technology based on the drawing of the casing.

② Mold the product according to the analyzed processing technology.

③ Obtain the blank made by the mold and make the corresponding fixtures.

④ Use the fabricated dedicated fixtures to process the blank samples.

⑤ Initially inspect whether the processed parts can meet the requirements of the drawing.

⑥ If they do not meet the requirements, corresponding adjustments need to be made to the mold or fixtures until they meet the requirements of the drawing.

⑦ Perform post-processing procedures (including surface treatment and polishing, etc.) on the processed workpieces that meet the drawing requirements.

⑧ Submit the finished product to the demanding department for verification of the finished product. Only after verification is passed can mass production be carried out.

The above is the processing method of mobile phone cases analyzed based on modern mobile phones. In actual processing, it is still necessary to analyze which processing method should be used for processing based on the specific drawing and customer requirements.

5. Circuit Board

Circuit boards are ubiquitous in all electronic devices. They are employed to make circuits more miniaturized and intuitive, and they exert a crucial role in the mass production of fixed circuits as well as the optimization of the layout of electrical appliances. Just envision, if circuit boards did not exist, a mobile phone would necessitate numerous dense wires for connection. Moreover, there would be no designated location to fix the processor and other components within the mobile phone. The thickness of the mobile phone would be extremely thick, and its functions would also be highly limited and simplistic.

During the processing of circuit boards, CNC is predominantly utilized for operations such as drilling and milling the shape.



  • Computer Manufacturing

In the field of computer manufacturing, there are even more parts processed by CNC, including motherboards, and input and output terminals. CNC processing is involved. For example, computer motherboards require CNC for drilling and processing corresponding screw holes and via holes, and they must be precisely consistent with the holes on the motherboard; otherwise, problems such as the motherboard not being able to be fixed in the chassis or not being installed properly will arise.


Among input and output devices, including keyboards, mice, monitors, speakers, etc., there are also many parts processed by CNC among them. For example, various holes in keyboards and mice, monitor stands, frames, connection holes of speakers, speaker fixing frames, etc. Some customized computer cases are not made through traditional sheet metal blanking, bending, and welding but are processed by CNC. Although the cost of CNC processing is relatively high, the appearance and heat dissipation characteristics of such products have been pursued by the majority of DIY enthusiasts.

In laptops, the ABC shells of laptops are generally processed through molding, but after the molding is completed, CNC is still needed to process the net size, including holes, shapes, and the processing of the molding surface. The purpose of molding is to reduce time and increase efficiency for the subsequent CNC processing. CNC processing is to obtain the size we need more accurately to ensure that various spare parts can be precisely installed in the corresponding positions. In addition to the shells, CNC processing is also used for heat dissipation modules, power supply modules, etc.

Advantages of CNC Machining Technology in Electronics

CNC machine tool processing technology finds extensive and significant applications in the field of electronic communication. The remarkable characteristics of automation and high precision associated with this technology are capable of furnishing stable and reliable manufacturing capabilities for the production of electronic communication equipment.

1. Enhancing Processing Accuracy:

The CNC machine tool processing technology is capable of attaining high-precision processing through programming control. This effectively averts errors that might otherwise arise due to human factors.

2. Boosting Processing Efficiency: 

CNC machine tools provide rapid processing speeds and automated operations. This enables a considerable saving of processing time and leads to an enhancement in production efficiency.

3. Guaranteeing Product Consistency:

The CNC machine tool processing technology can manufacture precisely the same products repeatedly based on identical processing programs. This ensures the consistency and reliability of the products.

4. Reducing Labor Costs:

CNC machine tools minimize reliance on workers and thereby lower labor costs, particularly for cumbersome and repetitive processing procedures.

5. Elevating Product Quality:

The high precision and stability offered by the CNC machine tool processing technology can significantly reduce product defects and the rate of defective products. This results in an improvement in the quality and reliability of the products.

With the continuous progress of technology, it is firmly believed that the application of CNC machine tool processing technology in the field of electronic communication will persistently expand and deepen. It is expected to make even more substantial contributions to the further advancement of the electronic communication industry.

How to Choose a Reliable Electronic Product Supplier?

When you need for electronic product production, the question of how to choose a matching supplier becomes crucial. First and foremost, we must categorize our products. This could include CNC-processed parts, electronic products, molded parts, and more. Subsequently, based on these classified details, we can commence the search for corresponding suppliers. When it comes to selecting a supplier for CNC-processed parts, it is highly advisable to opt for one with substantial processing experience. The reason is simple. A supplier armed with processing experience can not only flawlessly handle the processing of your products but also assist you by referring to previous successful cases. This can add a touch of uniqueness to your products.

Choose Richconn As Your Best Electronic Product Supplier

Richconn has many years of processing experience in the electronic industry. No matter if you are engaged in industries such as electronic equipment, medical devices, aerospace, or automotive manufacturing, you can consult Richconn. It is believed that while providing you with services, they will also provide you with valuable opinions and suggestions.

ü A wide range of materials are available include aluminium, aluminium alloy, steel, alloy steel, alloy powder coating, titanium, copper, copper alloy, die steel, carbon fiber, ntpt, ABS, PC, PU, pum, peek, pet, etc.

  • Processing requirements range from low-grade it13 ~ it11 to medium-grade it10 ~ it9 and it8 ~ it7, high-grade it7 ~ IT6 and ultra-high-grade it5 ~ it2.

  • Richconn supports a one-stop service from mold design to product processing, which can save your sample time and the cost of later turnover.

  • Richconn has participated in large-scale electronic equipment CNC processing services and has rich processing experience to meet your product requirements.

  • Richconn has been challenging more difficult products for the electronic industry and has accumulated rich experiences of success and failure. The successful experience can make our later processing smoother, and the failure experience will also reduce the error rate in our later processing.

  • Richconn adheres to the model that all parts need to be fully inspected, and treats the quality of each product seriously, not allowing a single unqualified product to pass through.


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