No machine can be made without holes. To connect the parts together, a variety of different sizes of screw holes, pin holes or rivet holes are required; In order to fix the transmission parts, various mounting holes are needed; The machine parts themselves also have many kinds of holes (such as oil holes, process holes, weight reduction holes, etc.). The operation of machining holes so that the holes meet the requirements is called hole machining.

The surface of the inner hole is one of the important surfaces of the mechanical parts. In mechanical parts, parts with holes generally account for 50% to 80% of the total number of parts. The types of holes are also diverse, there are cylindrical holes, conical holes, threaded holes and shaped holes. Common cylindrical holes are divided into general holes and deep holes, and deep holes are difficult to process.

1. First of all, the difference between U drill and ordinary drill is that U drill uses the peripheral blade and the center blade, at this Angle, the relationship between U drill and ordinary hard drill is actually similar to the relationship between the machine clamping turning tool and the welding turning tool, and the blade can be replaced directly after the tool is worn without regrinding. After all, the use of indexable blades still saves material than the whole hard drill, and the consistency of the blade makes it easier to control the size of the part.

2. The rigidity of U drill is better, you can use a high feed rate, and the processing diameter of U drill is much larger than that of ordinary drill, the maximum can reach D50~60mm, of course, U drill can not be too small due to the characteristics of the blade.

3.U drill encounter a variety of materials only need to replace the same type of different grades of blade, hard drill is not so convenient.

4. Compared with hard drilling, the precision of the hole drilled by U drilling is still higher, and the finish is better, especially when the cooling and lubrication are not smooth, it is more obvious, and U drilling can correct the position accuracy of the hole, and hard drilling can not be done, and U drilling can be used as a bore knife.

1. U drill can punch holes on surfaces with inclination angles less than 30~ without reducing cutting parameters.

2. After the cutting parameters of U drilling are reduced by 30%, intermittent cutting can be achieved, such as processing intersecting holes, intersecting holes, and phase perforation.

3. U drilling can realize the drilling of multi-step holes, and can boring, chamfer, eccentric drilling.

4. When drilling, the drilling chips are mostly short chips, and the internal cooling system can be used for safe chip removal, without cleaning the chips on the tool, which is conducive to the continuity of the processing of the product, shorten the processing time and improve efficiency.

5. Under the condition of standard length-diameter ratio, no chip removal is required when drilling with U drill.

6. U drill for indexable tool, blade wear without sharpening, more convenient replacement, and low cost.

7. The surface roughness value of the hole processed by U drilling is small, and the tolerance range is small, which can replace the work of some boring tools.

8. The use of U drilling does not need to pre-punch the center hole, and the blind hole bottom surface processed is relatively straight, eliminating the flat-bottom drill.

9. The use of U drilling technology can not only reduce drilling tools, and because U drilling is the head of the cemented carbide blade, its cutting life is more than ten times the ordinary drill, at the same time, there are four cutting edges on the blade, blade wear can be replaced at any time cutting, the new cutting saves a lot of grinding and replacing the tool time, can improve the average efficiency 6-7 times.

1. When using U drill, the rigidity of the machine tool and the neutrality of the tool and the workpiece are high, so U drill is suitable for use on high-power, high-rigidity and high-speed CNC machine tools.

2. When using U drilling, the center blade should be used with good toughness, and the peripheral blade should be used with relatively sharp blades.

3. When processing different materials, should choose different groove blade, under normal circumstances, small feed, small tolerance, U drilling length to diameter ratio, choose the groove blade with smaller cutting force, on the contrary, rough machining, large tolerance, U drilling length to diameter ratio is small, then choose the groove blade with larger cutting force.

4. When using U drilling, we must consider the power of the machine tool spindle, the stability of U drilling clamping, the pressure and flow of cutting fluid, and control the chip removal effect of U drilling, otherwise it will greatly affect the surface roughness and dimensional accuracy of the hole.

5. When installing the U drill, it is necessary to make the U drill center coincide with the center of the workpiece and be perpendicular to the surface of the workpiece.

6. When using U drilling, the appropriate cutting parameters should be selected according to different parts materials.

7. When drilling test cutting, be sure not to reduce the feed or speed at will because of caution and fear, so that the U drill blade is damaged or the U drill is damaged.

8. When using U-drill processing, when the blade is worn or damaged, it is necessary to carefully analyze the reasons and replace the blade with better toughness or more wear-resistant.

9. When using U drill to process step holes, it is necessary to start processing from large holes and then process small holes.

10. When drilling, pay attention to the cutting fluid to have enough pressure in order to flush out the chips.

11. The blade used on the center and edge of the U drill is different, must not be misused, otherwise it will damage the U drill rod.

12. When drilling with U-drill, workpiece rotation, tool rotation, and simultaneous rotation of the tool and workpiece can be used, but when the tool is moved in a linear feed mode, the most common method is to use the workpiece rotation mode.

13. The performance of the lathe should be considered when machining on the CNC car, and the cutting parameters should be adjusted appropriately, generally reducing the speed and low feed.

1. The blade is damaged too fast, easy to break, and the processing cost increases.

2. A harsh whistle is emitted during processing, and the cutting state is abnormal.

3. Machine jitter, affecting the machining accuracy of machine tools.

1. The installation of U drill should pay attention to the positive and negative directions, which blade is up, which blade is down, which is facing inside and which is facing outside.

2. The center height of U drilling must be corrected, according to its diameter size to require the control range, generally controlled within 0.1mm, the smaller the diameter of U drilling, the higher the center height requirements, the center height is not good U drilling two sides will wear, the aperture will be larger, the blade service life will be shortened, small U drilling is easy to break.

3. U drill has very high requirements for coolant, it must be ensured that the coolant is emitted from the center of U drill, the greater the pressure of the coolant, the better, the excess water outlet of the tower can be blocked up to ensure its pressure.

4, U drilling cutting parameters in strict accordance with the manufacturer's instructions, but also to consider different brands of blades, machine power, processing can refer to the load value of the machine tool size, make appropriate adjustments, generally using high speed, low feed.

5.U drill blade to check often, timely replacement, different blades can not be installed reverse.

6. According to the hardness of the workpiece and the length of the tool suspension to adjust the feed amount, the harder the workpiece, the larger the tool suspension, the smaller the cutting amount.

7. Do not use excessive wear of the blade, should be recorded in the production of blade wear and the relationship between the number of workpieces can be machined, timely replacement of new blades.

8. Use sufficient internal coolant with correct pressure. The main function of the coolant is chip removal and cooling.

9.U drill can not be used for processing softer materials, such as copper, soft aluminum, etc.

Honscn has more than ten years of cnc machining experience, specializing in cnc machining, hardware mechanical 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 more than 50 sets 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.

"CNC machining often has many advantages. From the perspective of automotive, aerospace and consumer applications, it is widely used in the manufacturing of components in these fields. And, in a way, it has similar properties to metal."

Polyformaldehyde, or POM, is a fascinating plastic resin that is widely used in various industrial fields. The aerospace, automotive and electronics industries are important consumers of this polymer. The processing of polyformaldehyde, especially when used in the manufacturing field, can achieve fast and efficient processing. In addition, it benefits users due to its high mechanical strength, stiffness, machinability and variety of grade choices.

This article contains the following key details of POM CNC machining, as well as its basic characteristics in terms of functions, applications, advantages, etc. Let's get started.

POM, a homopolymer, is also known as Delrin. It is widely adopted as an engineering grade thermoplastic for manufacturing prototypes for industrial use. It usually comes in two forms: copolymers or homopolymers. From complex prototypes to flexible machine parts, it brings economic benefits to manufacturing.

Product designers can benefit from its structural integrity, color diversity and stiffness characteristics. In addition, its reliability and resilience in wet environments make it suitable for Marine, medical and aerospace applications. POM, usually has some other name, such as; Acetal (acetal), polyacetal (polyacetal), polyformaldehyde, etc.

POM formaldehyde or polyacetal has significant advantages when used in machining. Benefit from leading technologies such as precision machining POM or CNC machining; For example; Milling, drilling, punching and punching. In addition, its versatility in various grades is very beneficial for machining experts. Delrin is also compatible with advanced cutting technologies; Examples include laser cutting and extrusion processes.

Some of the main features of CNC machining include:

1. It is lightweight, wear-resistant and has low friction properties.

2. POM's low friction capability means it can be used in high-precision rotating parts, such as automotive bushings, bearings and gears.

3. POM is similar to acrylic because of its inherent optical transparency and crystallinity.

4. Delrin comes in a variety of textures, colors and grades.

5. POM CNC machining is essential for high volume production and runs efficiently.

6. It has a lower heat absorption rate compared to other grade polymers such as nylon and polyethylene.

7. Evolved into CNC POM prototyping, CNC machining plays a key role in prototyping.

8. Delrine or POM is also known as metallic plastic or super steel because of its high rigidity and strength.

9. POM can be efficiently milling, drilling, grooving and cutting with CNC machining.

10. Manufacturers can use it for a variety of applications such as aerospace, automotive and consumer goods.

11. Design engineers can benefit from its dimensional stability and achieve tighter tolerances of ±0.0005 inches.

12. Rapid prototyping with CNC machining is feasible.

13. CNC lathes are also available for POM machining.

14. It describes low-cost solutions and offers economic benefits when produced in large volumes.

15. POM is a common technique; For example; CNC machining, injection molding, and 3D printing.

16. Prototypes and complex geometric shapes are easier to manufacture with POM CNC machining.

POM numerical control machining method

 

Plastic CNC machining can be deployed through various technologies; For example; CNC milling, CNC drilling, lathes, grinding, blanking and punching. Its ease of processing greatly affects its use in these processes. In addition, it has also received a lot of attention for its high elongation. Now, let's discuss the method to get the best results POM CNC machining.

The process begins with computer-aided design and programming to improve accuracy, quality, and optimization levels. After the virtual configuration, the instructions are forwarded to the CNC machine in the following form: G code for further processing prospects.

A cutting operation is then performed on the workpiece material (POM) to obtain the optimal dimensions and dimensions. It is recommended to use coolant when machining Delrin at high speed to prevent ineffective processing operations such as chip buildup or overheating.

The following are some of the techniques commonly used to process strong polyformaldehyde or POM.

1.POM CNC milling

CNC milling is often used to machine POM parts. Tools with sharp edges help to get the best Angle, as well as surface finish. Therefore, it is reasonable to use a single slot milling cutter to process Delrin. These cutters prevent chip buildup during machining operations.

2.POM CNC drilling

Standard twist and center drills are best suited for processing polyformaldehyde resins. These materials have strong, sharpened edges that ultimately allow for smooth milling operations on Delrin. The optimal cutting speed of the drilled POM must be approximately 1500rpm and the lip torsion Angle 118°.

3.POM CNC turning

POM CNC turning operation is similar to brass turning operation. The best results can be achieved by maintaining high speed turning at the same rate as the medium feed rate. In order to prevent interference and excessive chip accumulation problems, a chip-breaker must be used for precision turning operations.

4. Blanking and punching

Blanking and stamping, both methods are preferred for small and medium-sized complex parts. During operation, cracks in the sheet can lead to major problems of improper processing. To eliminate this problem, it is best to preheat the Delrin plate and use a manual or high punch.

Highlights: "During POM CNC machining, it is important to keep the POM tight or hold the POM and use a hard steel or carbide tool.

The two most common acetal grades are very useful for CNC machining; Polyformaldehyde resin 150, polyformaldehyde resin; 100 (AF). Let's evaluate their compatibility;

1. Delrin 150

Derlin 150 belongs to the acetal homopolymer family. It has high mechanical strength, stiffness and wear resistance. Thanks to these unique features, it is ideal for CNC machining of gears, bushings, gaskets and automotive interior and exterior finishes. In addition, its stability under high temperature conditions makes it ideal for irrigation and conveyor parts.

2. Delrin 100(A)

Delrin 100 A is integrated with polytetrafluoroethylene (PTFE) for enhanced mechanical stability and viscosity. It is widely used in gear systems or components that require low friction characteristics. In addition, it has strong moisture and chemical resistance. In addition, it eliminates the self-lubricating (oil or grease) characteristic, making it different from other Delrin grades.

The desired surface finish plays a key role in the machining process. When it comes to surface treatment, two options are usually employed: machining and sandblasting. Here is a brief introduction to these;

After processing

CNC machining often leaves a bumpy surface or texture on the surface of the acetal part. When rough or textured parts are needed to improve the frictional properties of the parts, the surface treatment is preferred. The typical roughness range that can be achieved by machining is about 32 to 250 microinches (0.8 to 6.3 microns).

Pearl burst

In most cases, machining tools leave marks on acetal parts. Sandblasting is often used to prevent tool marks and enhance the visual effect of Delrin machined parts. It works by releasing glass beads or fine particles onto the surface of machined parts under high pressure. In addition, it improves durability and provides a valuable, smooth, matte, aesthetically pleasing and satin-polished appearance to polyformaldehyde resin machine parts.

There are other techniques; For example; Anodizing, polishing, painting and stamping. However, most design engineers prefer the above two options due to economic feasibility.

However, there are huge benefits to using Delrin for CNC machining. Besides, it also has some disadvantages. Here are Delrin's limitations;

Adhesion: Although acetal has excellent chemical resistance, it often presents challenges in bonding with strong adhesives. To overcome this problem, designers may need to employ post-treated surface options for best results.

Thermal sensitivity: Thermal sensitivity is a noteworthy issue for design manufacturers. The ability of acetone alcohols to withstand high temperature conditions is very significant. However, it is well suited for applications where mechanical stability is critical. But in some cases, when it is exposed to high temperature conditions, there will be deformation or distortion problems. Compared with nylon, nylon shows higher strength and structural strength even in harsh environments.

High flammability: The processing of polyformaldehyde resin faces the challenge of flammability. It is sensitive to temperatures above 121 degrees Celsius. It is recommended to always use a coolant, such as air coolant, to maintain the temperature during the processing operation. In order to overcome or control flammability problems, it is also necessary to use A Class A fire extinguisher when processing POM.

From automotive interiors to aerospace components, Drin is used in a wide range of applications. Let's take a look at some of its key applications in manufacturing;

Medical industry

POM is an important material for medical components or equipment. As an engineered thermoplastic, it meets the strict quality standards of the FDA or ISO. Its applications range from enclosures and housings to complex functional components; For example; Disposable syringes, surgical tools, valves, inhalers, prosthetics and medical implants.

Automobile industry

Derlin supplies a wide range of automotive components to the automotive industry. Its high mechanical strength, low friction, and wear resistance allow engineers to use it to make important car, motorcycle, and electric vehicle parts. Some common examples include: articulated housings, locking systems, and fuel transmitter units.

Consumer appliances

When it comes to convenient applications, polyformaldehyde processing describes several significant benefits. Manufacturing experts use it to make zippers, cooking utensils, washing machines and clips.

Industrial machinery parts

Derlin's great strength enables it to be used in industrial parts manufacturing. Its ability to withstand wear and low friction characteristics makes it ideal for components such as springs, fan wheels, gears, housings, scrapers and rollers.

As an industry pioneer, Honscn is always at the forefront of market developments. We know that in the fierce market competition, only by constantly honing ourselves can we create indestructible competitiveness. Therefore, we adhere to technological innovation and integrate scientific management into every production link to ensure that every step is accurate. We not only focus on the pulse of the domestic market, but also in line with international standards, with a global perspective to examine the industry trend, grasp the pulse of The Times. With an open mind, embrace the world, with excellent quality, win the future!

Please feel free to contact us to discuss your project needs!

Numerical control drilling is a method of drilling using digital control technology. It has the characteristics of high precision, high efficiency and high repeatability. By pre-programming to set the drilling position, depth, speed and other parameters, CNC machine tools can automatically complete complex drilling operations.

CNC drilling machine is usually composed of control system, drive system, machine body and auxiliary device. The control system is the core, responsible for processing and sending instructions; The drive system realizes the movement of each axis of the machine tool; The machine body provides drilling platform and structural support; Auxiliary devices include cooling system, chip removal system, etc., to ensure the smooth process.In the manufacturing industry, CNC drilling is widely used in aerospace, automotive, mold manufacturing and other fields, which can meet the demand for high-precision drilling of parts and improve production efficiency and product quality.

The processing principle of CNC drilling technology mainly includes the following steps:

1. Programming: The designed drilling pattern and parameters are converted into CNC machine tool identifiable processing program, through the keyboard on the operation panel or input machine to send digital information to the CNC device.

2. Signal processing: The CNC device performs a series of processing on the input signal, sends the feed servo system and other execution commands, and sends S, M, T and other command signals to the programmable controller.

3. Machine tool execution: After the programmable controller receives S, M, T and other command signals, it controls the machine tool body to execute these commands immediately, and feedbacks the execution of the machine tool body to the CNC device in real time.

4. Displacement control: After the servo system receives the feed execution command, the coordinate axes of the main body of the drive machine tool (feed mechanism) are accurately displaced in strict accordance with the requirements of the instruction, and the processing of the workpiece is automatically completed.

5. Real-time feedback: In the process of displacement of each axis, the detection feedback device will quickly feedback the measured value of the displacement to the numerical control device, so as to compare with the command value, and then issue compensation instructions to the servo system at a very fast speed until the measured value is consistent with the command value.

6. Over-range protection: in the process of displacement of each axis, if the phenomenon of "over-range" occurs, the limiting device can send some signals to the programmable controller or directly to the numerical control device, the numerical control system on the one hand sends an alarm signal through the display, on the other hand, it sends a stop command to the feed servo system to implement over-range protection.

CNC drilling technology has the following processing characteristics:

1. High degree of automation: the whole processing process is controlled by a pre-prepared program, reducing manual intervention and improving production efficiency.

2. High accuracy: It can realize high-precision drilling, accurate positioning, and the size and shape accuracy of the hole are guaranteed.

3. Good processing consistency: as long as the procedure is unchanged, the product quality is stable and the repeatability is high.

4, complex shape processing ability: can process a variety of complex shapes and structures of the workpiece to meet diverse needs.

5. Wide range of adaptation: suitable for drilling of a variety of materials, including metal, plastic, composite materials, etc.

6. High production efficiency: fast automatic tool change system and continuous processing ability, greatly shortening the processing time.

7. Easy to adjust and modify: the parameters and process of drilling can be adjusted by modifying the program, and the flexibility is strong.

8. Multi-axis linkage can be realized: drilling can be carried out in multiple directions at the same time, improving the complexity and accuracy of processing.

9. Intelligent monitoring: It can monitor various parameters in the processing process in real time, such as cutting force, temperature, etc., find problems in time and adjust them.

10. Good human-computer interaction: the operator can easily operate and monitor through the operation interface.

The machining accuracy of CNC drilling technology is mainly ensured through the following aspects:

1. Machine tool accuracy: the selection of high-precision CNC drilling machine tools, including the structural design of the machine tool, manufacturing process and assembly accuracy. High-quality guide rails, lead screws and other transmission components can reduce motion errors.

2. Control system: The advanced CNC system can accurately control the movement trajectory and speed of the machine tool to achieve high-precision positioning and interpolation operations, so as to ensure the accuracy of the drilling position and depth.

3. Tool selection and installation: Select the appropriate drill bit and ensure its installation accuracy. The quality, geometry and wear of the tool all affect the machining accuracy.

4. Cooling and lubrication: A good cooling and lubrication system can reduce the generation of cutting heat, reduce tool wear, maintain the stability of the processing process, and help to improve accuracy.

5. Programming accuracy: Accurate programming is the basis for ensuring machining accuracy. Reasonable setting of drilling coordinates, feed speed, cutting depth and other parameters to avoid programming errors.

6. Measurement and compensation: Through the measurement equipment to detect the workpiece after processing, the measurement results are fed back to the numerical control system for error compensation, so as to further improve the processing accuracy.

7. Fixture positioning: to ensure the accurate and reliable positioning of the workpiece on the machine tool, reduce the impact of the clamping error on the machining accuracy.

8. Processing environment: stable temperature, humidity and clean working environment help to maintain the accuracy and stability of the machine tool, so as to ensure the processing accuracy.

9. Regular maintenance: Regular maintenance of the machine tool, including checking and adjusting the accuracy of the machine tool, replacing the worn parts, etc., to ensure that the machine tool is always in good working condition.

In CNC drilling technology, the surface quality of drilling can be improved by the following methods:

1. Choose the right tool: According to the processing material and drilling requirements, choose high quality, sharp and geometrically optimized drill bits. For example, the use of coated drill bits can reduce friction and wear and improve surface quality.

2. Optimize cutting parameters: set cutting speed, feed rate and cutting depth reasonably. Higher cutting speed and proper feed usually help to obtain a better surface finish, but care should be taken to avoid excessive tool wear or machining instability due to improper parameters.

3. Full cooling and lubrication: The use of effective cooling lubricant, timely take away the cutting heat, reduce the cutting temperature, reduce tool wear and the formation of chip tumors, thereby improving the surface quality.

4. Control the processing allowance: before drilling, reasonably arrange the pre-processing process, control the allowance of the drilling part, and avoid excessive or uneven impact on the surface quality.

5. Improve the accuracy and stability of the machine tool: maintain and calibrate the machine tool regularly to ensure the motion accuracy and rigidity of the machine tool, and reduce the impact of vibration and error on the surface quality.

6. Optimize the drilling path: adopt reasonable feeding and retracting methods to avoid burrs and scratches at the hole opening.

7. Control the processing environment: keep the processing environment clean, constant temperature and humidity, reduce the interference of external factors on the processing accuracy and surface quality.

8. Using step-by-step drilling: for holes with larger diameters or high precision requirements, the method of step-by-step drilling can be used to gradually reduce the aperture and improve the surface quality.

9. Hole wall treatment: After drilling, if necessary, polishing, grinding and other subsequent treatment methods can be used to further improve the surface quality of the hole.

CNC drilling technology has been widely used in the following fields:

1. Aerospace field: Components used in the manufacture of aircraft and spacecraft, such as wing structures, engine components, etc., have high requirements for precision and quality.

2. Automobile manufacturing industry: drilling and processing of automobile engine cylinder block, transmission shell, chassis parts, etc., to ensure the accurate coordination of parts.

3. Electronic equipment manufacturing: It plays an important role in the drilling of printed circuit boards (PCB) to ensure the accuracy of circuit connections.

4. Mold manufacturing: high-precision drilling for all kinds of molds such as injection mold, stamping die, etc., to meet the complex structure and high-precision requirements of the mold.

5. Medical device field: precision parts for the production of medical devices, such as surgical instruments, prosthetic parts, etc.

6. Energy industry: including wind power generation equipment, petrochemical equipment and other parts drilling.

7. Marine manufacturing: drilling and processing of Marine engine parts, hull structural parts, etc.

8. Military industry: parts manufacturing of weapons and equipment to ensure their performance and reliability.

In short, CNC drilling technology has an indispensable position in all fields of modern industry because of its high precision, high efficiency and flexibility.

The development trend of CNC drilling technology is mainly reflected in the following aspects:

1. Higher accuracy and speed: With the continuous improvement of product quality and production efficiency requirements of the manufacturing industry, CNC drilling technology will develop in the direction of higher positioning accuracy, repeat accuracy and faster drilling speed.

2. Intelligence and automation: the integration of artificial intelligence, machine learning and other technologies to achieve automatic programming, automatic optimization of processing parameters, automatic fault diagnosis and automatic error compensation functions, further reduce manual intervention, improve processing efficiency and quality stability.

3. Multi-axis linkage and composite machining: The development of multi-axis linkage drilling technology can complete the drilling of complex shapes and multi-angles in a single clamping. At the same time, with other processing processes such as milling, grinding, etc., to achieve a multi-machine energy, improve processing efficiency and accuracy.

4. Green environmental protection: Focus on energy saving and consumption reduction, using more efficient drive systems and energy-saving technologies to reduce energy consumption. At the same time, the use and treatment of cutting fluid is optimized to reduce the impact on the environment.

5. Miniaturization and large-scale: on the one hand, it meets the high precision and high stability needs of micro-parts drilling; On the other hand, it can deal with large-scale drilling of large structural parts such as ships and Bridges.

6. Network and remote control: Through the network to achieve the interconnection between equipment, remote monitoring, diagnosis and maintenance, improve the efficiency and convenience of production management.

7. New material adaptability: can adapt to new materials such as superalloy, composite materials and other drilling processing, develop the corresponding tools and processes.

8. Optimization of human-computer interaction: a more friendly and convenient human-computer interaction interface makes it easier for operators to program, operate and monitor.

As an important processing method in modern manufacturing industry, CNC drilling technology has many advantages and wide application fields. The machining principle realizes high precision drilling through programming, signal processing, machine tool execution and other steps. In terms of characteristics, it has the advantages of high degree of automation, high precision, good consistency and wide range of adaptation. In order to ensure machining accuracy, it depends on many factors such as machine tool accuracy, control system and tool selection. The quality of drilling surface can be improved by selecting cutting tools and optimizing cutting parameters. In the future, the development trend of CNC drilling technology will move towards higher precision and speed, intelligence and automation, multi-axis linkage and composite processing, green environmental protection, miniaturization and large-scale, networking and remote control, new material adaptability and human-computer interaction optimization. It is foreseeable that CNC drilling technology will continue to innovate and develop, providing more powerful support for the progress of the manufacturing industry.