①It Should Be Able To Ensure The Accuracy And Accuracy Of The Workpiece Being Processed.

①It should be able to ensure the accuracy and accuracy of the workpiece being processed.

When many people go to CNC machining services for the first time, they don't even know what G code is, so they end up with parameter errors and delayed delivery, which wastes time and money.

What exactly does the G code control?

G code is used to send operating commands to CNC machine tools. The function of this command is to let the tool know which coordinate point it should go to, and also tell how fast the spindle is rotating and what the feed speed should be. In 2024, the systems in the mainstream brands used in China were mainly Fanuc and Siemens. The number of core instructions in these systems did not exceed 200. However, after different combinations of these instructions, they can realize the linkage control function of three to five axes.

When programming, the most easily overlooked things are the tool changer code and coolant switch instructions. Many factories actually do not set the cooling command, so in the case of high-temperature cutting, the life cycle of the tool is directly cut in half. In 2025, a machine processing factory in Suzhou reported that after adding the cooling code, the tool cost was reduced by about 30%.

How is CNC better than manual?

If you want to manually process parts with particularly complex shapes, even a very skilled craftsman will take three to five days to complete, and the processing accuracy will fluctuate within a range of plus or minus 0.05 millimeters.

In contrast, when using CNC equipment to process the same batch of parts, the repeatability accuracy can reach plus or minus 0.005 mm, and this equipment can also support continuous operation 24 hours a day.

According to actual data from a mold factory in Dongguan in 2025, after switching to CNC milling, the cost of a single piece has become lower. The specific change is from 48 yuan to 31 yuan. At the same time, the scrap rate has also been reduced, from the original 7% to 1.2%. Special-shaped curved surfaces that could not be processed manually in the past can now be completed directly in one clamping using five-axis CNC technology.

How to choose between CNC milling and CNC turning

CNC lathes are suitable for processing shaft parts and workpieces with rotary structures such as discs. Its working principle is that the spindle drives the workpiece to rotate, and the tool performs linear feed motion at the same time.

CNC milling machines, on the other hand, use a method of fixing the workpiece and allowing the tool itself to rotate. It has expertise in processing plane features, cavity structures, and gear tooth shapes. The work content and process characteristics of these two types of equipment in actual production are completely different.

When actually placing an order, CNC turning technology is chosen for parts such as shaft sleeves, while CNC milling technology is chosen for box covers and special-shaped parts.

In those production workshops with a large number of mixed batches of parts, both types of production equipment are usually fully equipped. According to statistics, during 2025, approximately 70% of medium-sized machining workshops in China will have both milling equipment and turning equipment.

What does EDM wire cutting cut?

Wire EDM technology mainly uses molybdenum wire or copper wire as a conductive tool. ① It should be able to ensure the accuracy and precision of the workpiece being processed. The principle of this method is to rely on the energy generated by pulse discharge to etch the metal. Its main purpose is to deal with materials with relatively high hardness and situations where narrow gaps need to be processed. During this time period in 2024, the thickness of the gap that domestic wire cutting equipment can cut can reach 0.1 mm. The accuracy can be controlled within the range of ±0.01 mm, and this process is completely independent of the cutting force.

Frequently Asked Questions about CNC processing services for materials such as hardened steel and titanium alloys that are considered "uncut". It can also be cut. A connector factory in Shenzhen chose to use wire cutting technology to replace the traditional benchwork operation mode in 2025. In this way, the processing time of a single product was reduced from the previous four hours to forty minutes, and the overall efficiency was increased several times.

When looking for CNC machining services, check these items first

The first is to see clearly what information is contained in the equipment list, such as whether it is a three-axis machine tool or a five-axis machine tool, and what the specific power of the spindle is; the second is to evaluate the programming capabilities and check whether it can generate G code and perform tool path simulation operations; the third is to carefully check the content of the quality inspection report to make sure whether there are results from three-coordinate measurement in the critical dimension data.

By the time of 2025, the obvious trend in the entire industry is to make quotations more transparent. Those manufacturers that comply with formal procedures will usually list the material costs used, calculated labor hours, and subsequent processing expenses very clearly and clearly. If someone encounters a situation where they only quote a total amount, there is a high chance that additional project costs will be incurred in the later stage. Therefore, in the early stage of formally signing the contract, You must insist on asking the other party to come up with a detailed quotation.

The most common pitfalls for novices

The first big pitfall is that rashly placing an order without marking the dimensional tolerances. As a result, the factory can only process according to the default error range of minus 0.1 mm and plus or minus 0.1 mm. As a result, the parts cannot be assembled, and in the end they have to overturn them all and make them again.

For example, in 2024, a customer in Ningbo had a batch of 300 bearing seat products that were all required to be reworked due to this problem, which cost an additional RMB 110,000.

The second big pitfall is that people often simply ignore the material grade and use the same set of cutting parameters for aluminum alloy and No. 45 steel. As a result, the tool will chip at every turn. Therefore, before placing an order, be sure to confirm the specific model, hardness value, and heat treatment completion status of the material, and then ask the factory to come up with a specific processing technology solution and CNC processing service FAQ . In this way, the waste caused by rework can be greatly reduced.

When you went to look for CNC machining services for the first time, have you ever been trapped by the conventional tolerance standards that were not specifically emphasized? Everyone is very welcome to talk about related experiences and opinions in the comment area. If you feel that this content is of some use to yourself. Then you might as well give this article a thumbs up. And forward it to share it with friends who specialize in machining work.