Introduction to CNC Machining

Computer Numerical Control (CNC) machining is a manufacturing process that employs computerized controls and machine tools to remove layers of material from a workpiece, producing custom-designed parts. This technology is essential for manufacturing high-precision and complex components across various industries. CNC machining offers advantages such as high precision, repeatability, and the ability to produce complex geometries.

CNC machines operate through pre-programmed software and code that controls the movement of production equipment. This automation allows for the high-precision creation of parts and components that meet exacting specifications. The primary types of CNC machines include mills, lathes, and routers, each suitable for different types of machining tasks.

 

Key Products Offered

At CNC Yangsen, we specialize in the production of high-quality CNC machined parts. Our product range includes:

· CNC Machined Aluminum Parts: Lightweight, durable, and corrosion-resistant parts used in aerospace, automotive, and electronics.

· CNC Machined Steel Parts: Strong and wear-resistant components ideal for heavy machinery and industrial applications.

· CNC Machined Plastic Parts: Lightweight and versatile parts used in medical devices, consumer electronics, and automotive interiors.

· CNC Prototyping Services: Rapid production of prototypes to test designs before mass production.

 

CNC Machined Aluminum Parts

Aluminum is a popular material in CNC machining due to its excellent machinability, strength-to-weight ratio, and resistance to corrosion. CNC machined aluminum parts are commonly used in industries such as aerospace, automotive, and electronics. At CNC Yangsen, we produce a wide range of aluminum parts, including housings, brackets, and heat sinks.

CNC Machined Steel Parts

Steel offers superior strength and durability, making it ideal for heavy-duty applications. Our CNC machined steel parts are used in industries like construction, industrial machinery, and transportation. We provide various steel components, such as gears, shafts, and structural supports, ensuring they meet the highest quality standards.

CNC Machined Plastic Parts

Plastic materials are favored for their versatility, light weight, and cost-effectiveness. CNC machined plastic parts are utilized in medical devices, consumer electronics, and automotive interiors. CNC Yangsen manufactures plastic components with precision, catering to intricate designs and specific functional requirements.

CNC Prototyping Services

Prototyping is a critical step in product development, allowing for design validation and functional testing. Our CNC prototyping services enable rapid production of prototypes, helping clients refine their designs before committing to mass production. This process reduces time-to-market and ensures the final product meets all specifications.

Benefits of CNC Machining

High Precision and Accuracy

CNC machining offers unparalleled precision, with tolerances often within ±0.001 inches. This accuracy is crucial for industries requiring tight tolerances, such as aerospace and medical devices. The high precision of CNC machining results from its automated control, reducing human error and ensuring consistent quality across production runs.

Consistency and Repeatability

Once a design is programmed into a CNC machine, it can produce identical parts with consistent quality. This repeatability is essential for large production runs and maintaining product standards. CNC machines can operate continuously, producing parts that match the original design specifications without variation.

Complex Geometries

CNC machines can produce complex shapes and intricate designs that would be difficult or impossible to achieve with manual machining. This capability opens up new possibilities in product design and engineering. Features such as internal cavities, intricate surface details, and complex curves are achievable with CNC machining.

Material Versatility

CNC machining is compatible with a wide range of materials, including metals, plastics, and composites. This versatility allows manufacturers to select the best material for their specific application. Whether the need is for high-strength metal parts or lightweight plastic components, CNC machining can accommodate diverse material requirements.

Cost-Effective Production

While the initial setup costs for CNC machining can be high, the process becomes cost-effective for large production runs. The automation of the machining process reduces labor costs and increases production speed. Additionally, CNC machining minimizes material waste, contributing to overall cost savings.

 

Design Considerations for CNC Machining

Material Selection

Choosing the right material is crucial for the success of your CNC machining project. Consider factors such as material strength, weight, machinability, and cost. Common materials include aluminum, steel, titanium, and various plastics. The choice of material impacts the part's performance, durability, and cost.

Tolerances

Define the tolerances required for your parts. Tighter tolerances increase machining time and cost, so it's essential to balance precision with budget constraints. Understanding the functional requirements of the part helps in setting appropriate tolerances, ensuring it performs as intended without unnecessary machining expenses.

Surface Finish

The surface finish of CNC machined parts can vary from rough to highly polished, depending on the application. Specify the desired surface finish to ensure the final product meets your requirements. Factors such as the material, machining process, and post-processing steps influence the achievable surface finish.

Feature Design

Design features such as holes, threads, and pockets with manufacturability in mind. Avoid deep cavities, thin walls, and complex internal geometries that can be challenging to machine. Simplifying complex features where possible can reduce machining time and costs, while still achieving the desired functionality.

Tooling and Fixtures

Consider the tooling and fixtures needed to hold and machine your parts. Proper fixturing ensures stability and accuracy during machining. Designing parts that are easy to fixture can reduce setup times and improve overall machining efficiency. Collaboration with the machining team during the design phase can optimize the use of tooling and fixtures.

 

CNC Machining Process Overview

Designing the CAD Model

The first step in CNC machining is designing the part using Computer-Aided Design (CAD) software. This digital model serves as the blueprint for the machining process. The CAD model contains all the geometric information required to produce the part, including dimensions, tolerances, and surface finishes.

Converting CAD to CAM

The CAD model is then converted into a Computer-Aided Manufacturing (CAM) program. CAM software generates the toolpaths and G-code that control the CNC machine. The toolpaths determine the movement of the cutting tool, while the G-code provides specific instructions for machine operations such as speed, feed rate, and tool changes.

Setting Up the CNC Machine

Operators set up the CNC machine by installing the necessary tooling and fixtures. They also load the CAM program into the machine's controller. Proper setup ensures the machine operates correctly and produces parts to the required specifications. This step includes calibrating the machine, securing the workpiece, and verifying the toolpaths.

Machining the Part

The CNC machine follows the programmed toolpaths to remove material and shape the part. This process can involve multiple steps, such as roughing, finishing, and drilling. Roughing removes the bulk of the material quickly, while finishing achieves the final dimensions and surface finish. Drilling and other secondary operations are performed as needed.

Quality Control

After machining, the part undergoes quality control checks to ensure it meets the specified tolerances and dimensions. Inspection techniques include coordinate measuring machines (CMMs) and optical scanners. Quality control ensures that each part conforms to the design specifications and functions as intended.

 

Comparison of Common CNC Machining Materials

Material	Properties	Applications
Aluminum	Lightweight, corrosion-resistant	Aerospace, automotive, electronics
Steel	Strong, wear-resistant	Heavy machinery, industrial parts
Titanium	High strength-to-weight ratio	Aerospace, medical implants
Plastic	Lightweight, versatile	Medical devices, consumer products

 

Advanced CNC Machining Techniques

5-Axis CNC Machining

 

5-axis CNC machining allows for the movement of the cutting tool along five different axes simultaneously. This capability enables the production of highly complex and precise parts, reducing the need for multiple setups and increasing efficiency. It is particularly beneficial for aerospace and automotive components, where intricate designs and tight tolerances are required.

Multi-Spindle CNC Machining

Multi-spindle CNC machines have multiple spindles operating simultaneously, allowing for the machining of several parts at once. This technique significantly boosts productivity and is ideal for high-volume production runs. By machining multiple parts simultaneously, multi-spindle machines reduce cycle times and increase throughput.

Swiss-Style CNC Machining

Swiss-style CNC machines are designed for machining small, intricate parts with high precision. These machines are commonly used in the production of medical devices, watch components, and electrical connectors. Swiss-style machining excels in producing long, slender parts and features requiring tight tolerances and fine finishes.

CNC Turning

CNC turning is a machining process where a cutting tool, typically a non-rotary tool bit, moves linearly while the workpiece rotates. This technique is used to create cylindrical parts and is highly effective for producing parts with rotational symmetry. Common applications include shafts, bushings, and pulleys.

CNC Milling

CNC milling involves the movement of the cutting tool along multiple axes to remove material from the workpiece. This process is versatile and can produce a wide range of part geometries. CNC mills can perform operations such as drilling, tapping, and cutting slots, making them suitable for producing complex shapes and intricate features.

 

Post-Processing in CNC Machining

Deburring

Deburring removes sharp edges and burrs left from the machining process. This step improves the part's safety and functionality. Methods for deburring include manual processes, such as filing or sanding, and automated techniques, such as tumbling or vibratory finishing.

Anodizing

Anodizing is an electrochemical process that enhances the surface properties of aluminum parts, providing improved corrosion resistance and aesthetic appeal. The process involves immersing the part in an electrolyte bath and applying an electric current, resulting in a durable oxide layer.

Heat Treatment

Heat treatment alters the physical and mechanical properties of metal parts, enhancing their hardness, strength, and durability. Processes such as annealing, quenching, and tempering are used to achieve the desired material properties. Heat treatment is critical for parts subjected to high stress or demanding operational conditions.

Coating and Painting

Coating and painting protect CNC machined parts from corrosion and wear while improving their appearance. Various coatings, such as powder coating, electroplating, and painting, are available depending on the material and application requirements. Coatings can also provide additional properties, such as electrical insulation or enhanced wear resistance.

 

CNC Machining Applications

Aerospace Industry

The aerospace industry demands high-precision and high-performance parts, making CNC machining an ideal solution. Components such as engine parts, landing gear, and structural elements are often produced using CNC machining. The ability to machine complex geometries and maintain tight tolerances ensures the reliability and safety of aerospace components.

Automotive Industry

CNC machining is widely used in the automotive industry to produce parts such as engine components, transmission parts, and custom interior elements. The process ensures that parts meet stringent quality standards and performance criteria. CNC machining's versatility allows for the production of both prototype and production parts, supporting the entire product lifecycle.

Medical Industry

In the medical industry, CNC machining produces precision parts for devices such as implants, surgical instruments, and diagnostic equipment. The high precision and repeatability of CNC machining ensure that medical parts meet the required safety and performance standards. Materials such as titanium and high-grade plastics are commonly used for their biocompatibility and durability.

Electronics Industry

CNC machining creates components for consumer electronics, including housings, connectors, and heat sinks. The ability to machine intricate designs and maintain tight tolerances ensures that electronic parts fit and function correctly. CNC machining supports the rapid development and production of electronic devices, keeping pace with the industry's fast innovation cycle.

Industrial Machinery

CNC machining is crucial for manufacturing parts used in industrial machinery, such as gears, bearings, and tooling components. The durability and precision of CNC machined parts enhance the performance and longevity of industrial

 

CNC Machining Techniques and Their Applications

Technique	Description	Applications
5-Axis CNC Machining	Movement along five axes for complex parts	Aerospace, automotive components
Multi-Spindle CNC	Simultaneous machining with multiple spindles	High-volume production
Swiss-Style CNC	Precision machining of small, intricate parts	Medical devices, watch components
CNC Turning	Rotating workpiece with linear tool movement	Shafts, bushings, pulleys
CNC Milling	Multi-axis tool movement for complex geometries	Various parts, complex shapes

 

Choosing the Right CNC Machining Partner

Experience and Expertise

Select a CNC machining partner with extensive experience and expertise in the industry. Their knowledge and skills ensure that your parts are manufactured to the highest standards. Look for a partner with a proven track record and a diverse portfolio of successful projects.

Quality Control

Ensure that your CNC machining partner has stringent quality control processes in place. This includes using advanced inspection equipment and adhering to industry standards. A commitment to quality control guarantees that your parts meet all specifications and performance requirements.

Material Capabilities

Verify that your CNC machining partner can work with the materials required for your project. Their ability to handle a variety of materials, including metals, plastics, and composites, ensures that they can meet your specific needs. Material capabilities also indicate the partner's versatility and readiness to tackle diverse machining challenges.

Production Capacity

Consider the production capacity of your CNC machining partner. They should be able to handle both small and large production runs efficiently. Adequate production capacity ensures timely delivery of parts, whether you need a few prototypes or a high-volume production run.

Customer Support

Choose a CNC machining partner that provides excellent customer support. They should be responsive to your inquiries, offer technical assistance, and keep you informed throughout the machining process. Strong customer support fosters a collaborative relationship and ensures that your project progresses smoothly.

 

Conclusion

CNC machining is a versatile and powerful manufacturing process that offers numerous benefits, including high precision, consistency, and the ability to produce complex geometries. By understanding the key design considerations and advanced techniques, you can optimize your CNC machining projects for success. At CNC Yangsen, we are committed to providing top-quality CNC machined parts tailored to your specific needs.

Our expertise in CNC machining, combined with our dedication to customer satisfaction, makes us the ideal partner for your manufacturing needs. Whether you require precision aluminum parts, durable steel components, or intricate plastic parts, we have the capabilities to deliver. Contact us today to learn more about our products and services and how we can support your next project.

Two important elements defining the quality of machining are accuracy and precision. While accuracy gauges how closely a result is to the desired aim, precision describes how regularly a machine may repeat the same result. These two ideas are essential in manufacturing sectors where even little mistakes can cause expensive issues.

This article will discuss the value of accuracy and precision in machining and how modern technology, such as CNC machines, improves both.

 

What is the Difference Between Precision and Accuracy?

Though they define various aspects of measurement, accuracy, and precision are basic ideas in machining.

· Precision: Precision in machinery is the ability of a machine to perform a certain operation repeatedly. Even if the result is inaccurate, a CNC machine is said to be precise when it consistently generates the same result. Precision is about lowering variation in ongoing work. A CNC machine is accurate but not precise, for instance, if it routinely cuts metal 0.2 millimeters off target.

· Accuracy: This word describes the degree of proximity of a process's outcomes to the intended measurement. A machine is accurate if its cut exactly fits the needed specification. Accuracy by itself, though, is insufficient. Even an accurate machine might not run consistently without precision.

Consider a dartboard to help you understand this. Precision is when all the darts land in the same location, notwithstanding their distance from the bullseye. Though it's just one throw, accuracy is when the dart lands on the bullseye.

Excellent accuracy and precision combined with a CNC machine will help to lower material waste, increase efficiency, and satisfy the most exacting standards. That is vital in aerospace, automotive, and electronics sectors where every component must satisfy exact criteria. It Equipped with both features, a machine guarantees consistent, high-performance output.

Why Does Machining Precision Matter?

Machining requires precision for various reasons. Repeatability is among the main advantages of accuracy. In sectors like automotive or aerospace, each item must be the same even though parts are manufactured in great numbers. CNC machines guarantee that independent of production volume, every single component satisfies the same criteria thanks to their great precision.

These are the main causes of the great importance of accuracy:

· Consistency in Mass Production: A small variation can cause quality control problems throughout thousands of parts. For instance, a part may not operate as intended when assembled if it is routinely cut somewhat too small. Precision guarantees that every component is produced according to the same criteria, solving this issue.

· Reduced Material Waste: Precision machines effectively use materials, reducing waste. Any machining process flaw, no matter how little, can cause material to be modified or discarded. Along with costing more, this wastes priceless resources.

· Higher Quality Products: High precision guarantees that parts are created exactly as needed in sectors where safety and dependability rule, including medical equipment or aerospace. A product failure arising from even small differences may have disastrous results.

· Less Need for Adjustments: Precision lessens the demand for rework or corrections. Precisely produced pieces fit together, saving the need for further adjustments following machining.

 

In What Ways Could Accuracy Affect Machined Part Quality?

Precision guarantees repeatability; accuracy guarantees that items satisfy the intended standards. Accuracy is crucial for manufacturing important components—such as those found in medical equipment, electronics, or heavy machinery.

For instance, every flaw in a component you are machining for a high-performance engine can cause mechanical breakdown. The engine components must mesh precisely. A small difference can lead to friction, heat, and wear, degrading engine performance and lifetime. Accurate machining guarantees that every component fits together as it should.

Key Effects of Machining Accuracy:

· Meeting Tight Tolerances: Certain sectors demand items produced under very limited tolerances. Reaching these criteria depends on accurate machines. No matter how exact, inaccurate equipment can fail to reach these important tolerances and produce defective items.

· Assembly and Functionality: Accurate machining of components will result in proper fit and desired functionality. Accuracy guarantees that the product will function as intended, whether you are building a basic assembly line or a sophisticated aeronautical component.

· Improving Reliability: In sectors including medical equipment, even the smallest mistake can make all the difference between life and death. Reliable and precise operation of parts is guaranteed by accurate machining.

 

Accuracy vs. Precision Examples

Evaluating the performance of manufacturing activities depends much on accuracy and precision, which are independent factors. While precision indicates the machine's capacity to perform the same operation regularly, accuracy in CNC machining gauges a part's relative proximity to its intended dimensions. In order to keep specified dimensions, most CNC machines depend on computer software. Still, the outcomes may differ:

· Precise and Accurate: A CNC machine constantly generates parts with minimum errors that match the design criteria. One gets accuracy as well as precision.

· Accurate but Not Precise: Though the machine generates pieces almost within the specified measurements, the outcomes vary. While some components stray, others satisfy the criteria.

· Precise but Not Accurate: Although the machine always generates parts with the same measurements, those measurements deviate from the desired specifications. Though wrong, the parts are similar.

· Neither Precise Nor Accurate: The machine generates inconsistent pieces; none satisfy the needed standards.

Evaluating the performance of manufacturing activities depends much on accuracy and precision, which are independent factors. While precision indicates the machine's capacity to perform the same operation regularly, accuracy in CNC machining gauges a part's relative proximity to its intended dimensions. In order to keep specified dimensions, most CNC machines depend on computer software. Still, the outcomes may differ:

· Precise and Accurate: A CNC machine constantly generates parts with minimum errors that match the design criteria. One gets accuracy as well as precision.

· Accurate but Not Precise: Though the machine generates pieces almost within the specified measurements, the outcomes vary. While some components stray, others satisfy the criteria.

· Precise but Not Accurate: Although the machine always generates parts with the same measurements, those measurements deviate from the desired specifications. Though wrong, the parts are similar.

· Neither Precise Nor Accurate: The machine generates inconsistent pieces; none satisfy the needed standards.

Differentiating between accuracy and precision and independently measuring them will help to guarantee a high-quality machining operation. Examples illustrating how these two factors influence part machining are below:

1. Precision and Accuracy in Gear Manufacturing: Precision and accuracy define a CNC machine that generates gears with the right size and form for seamless operation. The machine is accurate but not exact; if the gears vary in size, they still fit appropriately.

2. Medical Device Production Accuracy: Medical equipment has high criteria. Though accuracy may be insufficient if some pieces vary, machine-produced parts with exact implant specifications could be accurate.

Knowing these differences optimizes the machining process, guaranteeing accuracy and precision for dependable, high-performance products.

Could A Machine Be Precise But Not Accurate?

A machine can be precise but not accurate at the same time indeed. In machining, this is a vital difference.

Suppose you are making cylindrical pieces on a lathe. The machine is exact since it generates the same output every time if it constantly generates pieces that are 0.5 millimeters bigger than the target diameter. The parts are not the right size; hence, they are not accurate either. That emphasizes how to separate traits—accuracy and precision—that must be optimized and call for separate optimization.

A machine can produce consistent components even if it is not accurate if it is exact; those parts will not satisfy the required criteria nevertheless. That can be a challenge in sectors like aerospace or automotive, where the pieces must precisely fit one another.

Key Differences:

· Precision: Always leads to the same outcome, even if it's wrong.

· Accuracy: generates the right outcome despite an erratic process.

Should a machine prove accurate but not exact, calibration could be necessary to fix the inaccuracy. Recalibrating the equipment can change the process to become exact and accurate.

Why Would A Machine Be Precise But Not Accurate?

Wear and tear, poor calibration, or incorrect setup can cause machines to grow imprecise or inaccurate. Even the best devices could need recalibration over time to keep accuracy and precision. Therefore, regular maintenance and calibration are essential to guarantee that devices satisfy the required criteria.

Although CNC Yangsen's machines are made to keep accuracy and precision throughout time, regular calibration helps to guarantee long-term performance.

 

How Do Machining Tolerances Affect Precision and Accuracy?

In machining, tolerances are deviations allowed from a given dimension. Tolerances allow a margin for slight deviations since no machine can generate precisely to specification every time.

Most machining processes find that the cost of output increases with decreasing tolerance. Tolerances are intimately connected to both accuracy and precision. Precise and accurate machines can generate parts regularly falling inside the necessary tolerance range.

Types of Tolerances:

· Tight Tolerances: These are applied even when the tiniest departure from the designated measurement could lead to issues. For an aviation engine, for instance, parts might have to be machined within a tolerance of 0.01 millimeters since even the tiniest change might compromise performance.

· Loose Tolerances: Looser tolerances can be employed in some areas where accuracy is unnecessary. For non-critical parts that won't be under stress or wear, for instance, looser tolerances allow for small variations from the intended size or form.

Machines such as the very precise CNC verticle machine centers offered by CNC Yangsen are perfect for exact tolerances. They guarantee that every part satisfies the necessary criteria by operating within quite small margins of error.

 

How Can You Make Machining Both Precise And Accurate?

High-quality parts require the proper mix of accuracy and precision. A precise but not accurate machine will regularly generate parts that are off. On the other hand, if a machine is accurate but not exact, it will only seldom generate parts that satisfy the criteria.

· Invest in High-Quality Machinery: Not every machine is built equal. While certain devices can offer accuracy and precision, others may be made for only one. CNC Yangsen's high-end machines provide accuracy and precision, guaranteeing constant outcomes.

· Maintain Equipment: Regular maintenance is even required of the most sophisticated machinery. Keeping machines both accurate and exact depends on proper maintenance, part replacement, and recalibration.

· Calibration: Frequent calibration guarantees machines' correctness throughout. Even the greatest machines can wander from their intended specs without calibration, producing inaccurate products.

 

Complex Machining Requires Precision And Accuracy, Why?

Ensuring that items satisfy the required criteria in complicated machining projects requires accuracy and precision. Complex jobs often call for a machine capable of preserving accuracy and precision throughout the process, including several processes, tight tolerances, and using several materials.

For instance, think of the manufacturing of an aircraft multi-part assembly. The whole assembly may suffer if one component is inaccurately or precisely lacking. In these situations, even little variations from the planned design can cause performance problems, safety hazards, or failure of the ultimate result.

For complex machining jobs, machines such as the 5-axis CNC machining centers from CNC Yangsen are perfect since they provide both accuracy and precision even when working with challenging materials or intricate geometries.

Complex Machining Applications Of Accuracy And Precision:

· Aerospace Components: High-precision machining guarantees that, under the worst conditions, all parts fit together exactly.

· Medical Devices: Errors in medical equipment can endanger people. Precision machining ensures the intended functionality of devices.

High-precision tools for these jobs would be CNC machining centers from CNC Yangsen. Designed to satisfy the strict criteria of various sectors, they provide accuracy and precision for the most important jobs.

 

How Do Precision and Accuracy Impact Efficiency and Cost?

Machining processes' cost and efficiency directly rely on accuracy and precision. Precise and accurate machines lower rework, reduce waste and boost production speed. Over time, this translates into notable cost reductions.

Accurate and exact machining of parts reduces the necessity of remakes or corrections. Because every part is created to exact standards, accurate machines help cut the time spent on quality control inspections.

Benefits of High-Precision and Accurate Machines:

· Reduced Waste: Consistent machine performance reduces waste of materials.

· Lower Rework Costs: Less time and money spent fixing mistakes equals fewer mistakes overall.

· Increased Production Speed: Faster and more dependably produced parts by precision machines raise general efficiency.

By providing unsurpassed precision and accuracy, lowering waste, and enhancing production efficiency, machines such as high-precision CNC turning centres help firms save time and money.

 

How to Improve Machining Precision and Accuracy?

Minimizing waste and manufacturing high-quality products depend on improved machining precision and accuracy. These are several strategies to get better:

· Regular Calibration: Machines are periodically calibrated to guarantee their operation within the intended tolerances.

· Use High-Quality Tools: Purchasing sharp, long-lasting cutting tools guarantees constant results and improved accuracy.

· Minimize Tool Wear: Changing tired tools immediately helps avoid machining process mistakes.

· Maintain Optimal Speeds: Correct feed rates and spindle speeds running machines guarantee accurate and precise components.

· Perform Routine Maintenance: Frequent maintenance and cleaning of machines helps to prevent mechanical problems generating mistakes.

· Stable Environment: Temperature swings and vibrations can affect accuracy; a controlled atmosphere reduces these influences.

Machining accuracy and precision will be much improved by applying these techniques.

 

Conclusion:

Producing high-quality products that meet industrial machining standards depends on accuracy and precision. Accuracy ensures that each component is produced to the appropriate standard, while precision ensures repeatability. For industries that require exacting standards, advanced CNC machines offer an ideal combination of both, making them absolutely indispensable.

Manufacturers can increase general product quality, lower waste, and achieve higher efficiency by choosing the correct equipment. If you want to improve your machining techniques, consider selecting CNC machines that are accessible at CNC Yangsen.

In order to better maintain various CNC machining center equipment, formulate appropriate inspection and maintenance specifications for different characteristics of each model, accurately implement daily maintenance, ensure the accuracy and stability of the equipment and extend the service life of the equipment, ensure safe production, avoid the occurrence of industrial accidents, and achieve the purpose of safety and efficiency. This document is specially formulated;

Scope: The daily inspection and maintenance operations of the CNC machining center equipment used are all specifications;

Daily maintenance: refers to the maintenance that CNC machine tool operators must perform every shift, mainly pre-shift and post-shift inspections to keep the equipment clean and check the condition of machine tool parts, lubrication conditions, and whether the screws are loose, etc.;

 

CNC Machine Daily Maintenance

1 The indicator lights on the operation panel are working properly and there are no abnormal alarms

2 Confirm that the air pressure gauge is within the range of (0.4-0.6MPa) and there is no air leakage in the air compression system

3 Confirm that there is no abnormal noise in the motor and moving parts

4 Wipe the operation panel with a dry cloth to keep the panel clean

5 Clean the cutting fluid filter and keep it clean, and confirm that there is no water leakage in the cutting fluid pipeline

6 Check whether the cutting fluid level is normal, and adjust it if it is not normal

7 At the end of each shift, rinse the debris and other debris in the machine to keep the inside of the machine clean

8 Confirm that the spindle cooling fan is working properly

9 Check the safety door function. It is normal for the machine to stop running when the protective door is opened during machine operation

10 Check the air pressure detection function. It is normal for the air pressure to be too low to alarm when the air source is turned off

11 Check the emergency stop function. It is normal for the machine to stop running immediately when the emergency stop button is pressed during machine operation

12 Check whether the auxiliary equipment of the machine is intact and clean

CNC Weekly Maintenance

1 Wipe the surface of the machine with a dry cloth to keep the appearance clean

2 Clean the cutting fluid tank and pipes to remove foreign matter and keep the pipes unobstructed

3 Clean the spindle end face, spindle taper hole and tool magazine and wipe them clean with a cloth

4 Remove moisture from the water collector of the three-point combination

 

CNC Monthly Maintenance

1 Add grease to the XYZ three-axis and tool change mechanism

2 Clean the cooling fan filter of the electric cabinet

3 Check whether there is water or oil in the electric control box, and clean it if there is

4 Use the manual function to make the XYZ three-axis move the entire distance and check for abnormal noise

5 Clean the spindle cooling fan

6 Check whether the anchor screws are firm, and adjust the level of loose and unstable equipment

7 Clean the appearance of the oil recovery device and the filter element, check whether it is working properly, the motor has no vibration noise, and the oil return pipe is unobstructed;

Equipment Regular Maintenance

Monthly: Check the three-axis motor and moving parts for abnormal noise; Check the machine tool parameters for abnormalities; Check whether the air pressure is within the range of (0.4-0.6MPa) for air leakage; Check whether the shield and exposed pipelines are damaged; Check whether the lubricating oil system is working properly and whether there is oil leakage; Check whether the safety device is damaged (door lock, emergency stop switch, etc.);

Quarterly: Clean and maintain the debris in the XY axis sheet metal; Clean the cutting fluid tank and foreign objects in the pipeline to keep the pipeline unobstructed; Clean and maintain the spindle cooling fan; Check whether there is water or oil in the electric control box, and clean it if there is; Check whether the exhaust fan of the electric control box is working properly; Clean the appearance of the oil recovery device and the filter element, and check whether it is working properly; Semi-annual : Check whether water or oil has entered the transformer, and whether the exhaust fan is working properly; check whether the anchor screws are firm; clean the spindle end face and taper hole, and wipe them clean with a cloth; clean the tool magazine and check whether the tool holder is damaged; check whether the fans of each driver are operating normally; whether the water pump and oil recovery machine motor have vibration noise;

Annual: Check whether the tool magazine spring and each screw bearing are worn; check whether the machine tool backup battery has power; back up the machine tool certification documents and parameters; check whether the spindle tension is within the normal range; check whether the main power terminal and each terminal in the electric control box are loose; check whether the machine tool geometric accuracy is within the normal range; perform annual equipment accuracy inspection according to the "CNC machining center accuracy inspection table";