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Understanding and Mitigating CNC Machining Risks: Tips for Optimal Production

Time:2023-04-03 Author:Henry

CNC machining (Computer Numerical Control Machining) is a method of machining that uses computer-controlled precision machines to manufacture parts and component assemblies. By feeding design files into a computer control system, CNC machines are able to accurately cut, drill, mill, engrave and punch operations. Compared to traditional machining methods, CNC machining can increase productivity, accuracy and consistency, and reduce operator error and work time.

The CNC machining process includes steps such as design and programming, material preparation, clamping and positioning, machining operations, surface preparation and quality checks. First, CAD drawings need to be produced or CAM software used to convert the design data into a CNC program, which is then uploaded to the CNC controller. Next, the raw material needs to be prepared and clamped onto the CNC machine. The machine then begins to automate the required machining process according to a pre-set programme. Once the process is complete, the surface needs to be treated, for example by grinding, sandblasting, plating, etc. Finally, a quality check is carried out to ensure that the part meets the specificatio


The following are a few common problems in CNC machining:

A. CNC in cutting products of note:


1. Determine the processing path: When programming the CNC, you need to determine the path of the product processing. The path should be as simple as possible to reduce processing time and tool wear.


2. Choose the right tool: According to the product material and the machining path, choose the right tool. The tool should have sufficient hardness and strength to ensure cutting quality and longevity.


3. Control the feed rate: The feed rate should be adjusted according to the material type and depth of cut. Excessive feed rates may result in tool damage or poor product surface quality.


4. Keep the machine stable: The machine should run steadily to ensure cutting accuracy and product quality. Regular inspection and maintenance of the machine tool is essential.


5. Safe operation: When operating CNC machine tools, relevant safety regulations and operating procedures must be observed to ensure personal safety.


In summary, CNC cutting products require attention to the tool, machining path, feed rate, machine stability and safe operation to ensure cutting quality and operational safety.


II. CNC drilling: the following are some points to note when drilling products


1. Choose the right drill bit: choose a suitable drill bit according to the hardness, diameter and depth of the processed material. Generally speaking, materials with higher hardness require the use of carbide drill bits, and longer drill bits are required for drilling of larger diameters and depths to ensure processing quality and efficiency.


2. Determine the appropriate drilling parameters: drilling parameters include feed rate, cutting speed, use of coolant, etc. Suitable drilling parameters can ensure drilling efficiency and machining quality.


3. Stable clamping: Before drilling, the workpiece needs to be firmly clamped to the table to avoid shaking or movement of the workpiece during drilling, which may lead to a shift in the drilling position or a reduction in drilling quality.


4. Drilling sequence: In the case of multiple holes to be drilled, drilling should generally be carried out in order, from outside to inside and from large to small, so as not to interfere with the work of the previous drilling in the subsequent drilling.


5. Cleaning and maintenance: After each drilling is completed, the drill and the processing machine need to be cleaned and maintained to avoid the accumulation of chips or debris on the next process and to extend the life of the drill and the equipment.


These are just a few points to keep in mind when drilling products in CNC. During the drilling process, you need to pay close attention to the processing status and adjust the parameters and operations at any time to ensure drilling efficiency and processing quality.



Third, CNC machining machine is a highly automated equipment, through the input of digital programs to control the machining process, to complete the high-precision, high-efficiency machining tasks. When the CNC setting program is not correct, it may lead to the machine tool crash phenomenon.


1. The CNC machining program includes the setting of various parameters, such as cutting speed, feed rate, tool diameter, depth of cut, etc. If these parameters are not set correctly, it may result in the machine tool crashing during machining. Specifically, the causes of tool clash are the following:


2. Tool length is too long or too short: If the tool length used does not match the tool length set in the machining program, it can cause the tool to collide with the workpiece or fixture during the cutting process.


3. The feed speed is set too high or too low: if the feed speed is set too high, the contact time between the tool and the workpiece is too short to cut the material in time, and the tool will vibrate or collide; if the feed speed is set too low, the tool will take too long to cut, which will easily result in poor machining surface quality.


4. Excessive depth of cut: If the depth of cut is too large in one cut, it will increase the cutting force and cutting heat, causing the tool to vibrate or deform, or even collide with the tool.


5. Mismatched tool diameter: If the diameter of the tool used does not match the diameter of the tool set in the program, it will also cause the tool to collide with the workpiece or fixture during machining.


Therefore, to avoid tool collisions in CNC machining, the machining parameters need to be set correctly and the program needs to be fully checked and tested to ensure that the parameters are set reasonably and correctly. At the same time, it is also necessary to make timely adjustments and deal with any abnormalities that occur during machining to ensure the safe operation of the machine tool.


IV. What techniques are available to effectively avoid the risk of tool clashes?

1. Reasonable CNC programming and process planning: avoid setting too small a gap and path between the tool and the workpiece, and ensure that the cutting parameters and depth of cut are correct.


2. Machine and workpiece co-ordinate setting: set up the workpiece co-ordinate system and machine co-ordinate system correctly to ensure that the CNC machine can understand and execute the program correctly.


3. Proper clamping: ensure that the workpiece is securely clamped so that it does not move or rotate during the cutting process.


4. Use of high quality tools: Use high quality CNC tools to ensure they can withstand high speeds and heavy loads of cutting.


5. Regular care and maintenance: keep the machine clean and replace worn parts regularly to ensure smooth and accurate operation.


6. Real-time monitoring and control: detect and avoid tool clashes in time by using sensors, cameras and other equipment to monitor the CNC machining process in real time, as well as setting up clash detection in the program.


In summary, avoiding CNC tool clashing requires a systematic and comprehensive approach that requires a combination of technologies and measures to achieve.


At our company, we take special care in setting up our programs to ensure that there is no risk of tool clashing when we carry out CNC machining. We also have a highly skilled team that is able to analyse and manipulate products in detail, thus ensuring excellent machining quality. At the same time, we will use advanced equipment and processes to ensure that both machining efficiency and product accuracy are optimised. As a result, we are confident that we can provide high quality and efficient CNC machining services to our customers. If you are interested in xy-global, please contact our engineers at sales820@xy-global.com We will diyidiyis the first time to communicate with you.



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