CNC Turning Fujian CNC Customization

CNC turning Fujian CNC customization

If you want to do CNC turning customization business in Fujian, then the most worrying pain point is the information gap. This information gap will lead to merchants using poor quality materials as good materials. In addition, they may charge you an expedited fee because the accuracy error is only a few wires. These situations are common traps in the industry.

Requirements communication and basic process

You can search for a CNC turning factory in Quanzhou or Xiamen, send the relevant drawings and specific material requirements first, and wait for the other party to evaluate the feasibility of the process and come up with a working time schedule.

For those shaft parts with a relatively simple structure and only require a few processing steps, they can be completed in about three to five days. For those parts with a more complex structure that require multiple processing steps, delivery will be delayed to about two weeks. This is a very normal situation.

As for local factories, they generally support UG format and SolidWorks format. Programming is done using Mastercam. After using Mastercam to generate the tool path code, a photo of the first piece will be issued for your confirmation before processing. Don’t skip this step and run it directly in batches.

Material selection and identification

You can choose 45 steel or 6061 aluminum for shaft parts. If you have higher requirements for strength, then choose 304 stainless steel, and use POM material for plastic parts. We can only make a rough judgment on whether the magnet will attract or not. The material 316 is almost not magnetized, so the best way is to ask the factory to provide the material's warranty sheet to confirm the situation. .

Because it is more convenient to get the materials from Jinjiang Hardware City, but the labels of the materials are particularly easy to get confused. Therefore, for the purchase of customized parts, it is recommended to let the factory carry out unified purchasing behavior. This saves you from having to go to the market in person and face the situation of buying materials with inconsistent labels.

Equipment and precision

This kind of parts are first processed by shaft turning in a turning center, and then sent to an upper vertical machining center to do the rest of the work with multi-process features such as milled grooves and threads. In factories in Fujian, this process route is relatively common, and most of the equipment used is Fanuc, Brother, and Beijing Jingdiao.

The accuracy of these equipment can generally reach the level of plus or minus 0.001 mm. If precision parts are made, the accuracy requirements will be more stringent, usually plus or minus 0.005 mm.

When you go to the manufacturer, you can't just ask them if they can do it. You have to ask directly what the spindle speed is, how many digits there are in the turret, and what the repeated positioning accuracy is. Those more reliable manufacturers will take the initiative to report all the specific parameters to you.

Cycle time and cost

A large portion of the cost is made up of materials and machine hours. The material cost of a 45 steel shaft with a diameter of 50 mm is about more than 20 yuan. In Fujian Province, the market price range for CNC turning machine hours is fifteen yuan to twenty-five yuan per minute. When the production batch is larger, the unit price of a single product will be suppressed lower.

Here is a practical way to save money, which is to relax the tolerance dimensions of the non-fitting surfaces and reduce the number of chamfers and decorative threads. If one place can be modified in the design stage, dozens of dollars in labor hours can be saved in the processing process.

Quality inspection and common rollovers

Before the delivery date, the customer's requirement is that the three-dimensional coordinate inspection report must be produced. Everyone has to focus on carefully looking at the outer diameter, coaxiality and surface roughness. The most prone place to overturn is the thread profile. If we adjust the feed rate too high during turning, the workpiece will be scrapped directly.

When it comes to first article confirmation, you must not ignore it just because it is troublesome. It is recommended that you pick up a micrometer and measure it yourself, and then release it after confirming that the data is OK. This will save much more time than waiting until mass production is completed and then discovering that all dimensions are off and then arranging rework.

Follow-up processing and collaboration

After the car is installed, those parts are usually blackened, nickel-plated, or anodized to prevent corrosion. Since the surface treatment manufacturers are very concentrated in Nan'an, Jinjiang, these external factories can be directly entrusted to complete the relevant processes during internal production. However, the specific process parameters and coating thickness standards and other indicators must be confirmed and locked in advance before starting work.

During the entire process, relevant work progress needs to be synchronized through WeChat. The version of the drawings must be locked and no modifications are allowed. If any problems are discovered during the processing process, communication needs to be communicated on the same day, instead of having to wait until the goods arrive in hand to detect and discover dimensional deviations.

When you are looking for CNC turning customization services, the most tangled factor in your mind is its processing accuracy, or will it affect the delivery date of the goods? Please share your views in the comment area. If this content is helpful to you, you can like it and forward it to your friends working in the manufacturing field.