High quality precision CNC turning and milling parts
Quick Details:
1. Keywords: CNC turning parts
2. Process: CNC processing
3. Color: black/customized
4. Origin: Guangdong, China
5. Use: Accessories
6. Drawing format: 2D/(PDF/CAD) 3D (IGES/STEP)
7. Equipment: CNC machining center
8. Delivery period: 1-2 weeks

Tips in CNC Machining of Metal Parts
1. Problems in bulk copper processing
Sometimes the overall copper bar is difficult to process, there is a blind corner that cannot be processed, or it is difficult to process. If the required tool is too long or too small, it can be considered to divide an additional copper bar. Sometimes the local copper bar needs to be cleaned. This copper bar is not difficult to process, but it must be clear about the partial number of spark hours and the calibration benchmark.
2. Add T for thin drawer copper
This kind of copper bar is easy to become open during processing. When processing, a new knife should be used. The knife should be small and the feed should not be too large. When processing, the length a can be made accurate, but a large margin (such as 1.0mm) should be left for d, and then the two sides should walk. Each time, the depth h=0.2~1. The depth feed should not be too much, nor should it go around the knife, but should be divided into two sides.
3. Left and right parts and one out of two directions
Sometimes a set of molds will produce two parts. For the left and right parts, the graphics can be made by mirror. If two identical parts are produced, the figure must be balanced or rotated in XY, and must not be mirrored. Be careful not to go in the opposite direction.
4. Die direction
The four guide bolt holes of the mold are not completely symmetrical, but one is asymmetrical, so it is clear that there is a benchmark on each template when processing the front and rear molds. When the processed front and rear molds are combined, the benchmark must be aligned with the benchmark, especially for the molds formed by the original mold. When drawing, pay attention to the direction. The direction of the copper head is the same as that of the front view (top view), the direction of the core and the frame of the Zang branch is the same as that of the copper head, and the front die is the opposite. Some decorative lines such as grooves or bosses on curved surfaces are difficult to process because they are relatively narrow. For grooves, we generally avoid hollowing out, that is, milling deeper, and then adding a loose pin to make a countersunk surface. Generally, the boss can only be made into a loose pin separately, and the big copper pin can not be made, so as to ensure the quality.
5. Fitting tolerance of moulds and products
A set of products usually has several or more than ten parts, and the main mating dimensions of these parts are guaranteed by computer gong processing. It is important to select reasonable tolerances, especially some product design drawings do not consider mating problems. The matching of bottom and surface shells is undoubtedly a 0-to-0 matching. The positioning is ensured by the support. The tolerance of concave and convex supports is generally 0.1MM, single side. For the accessories on the big body, such as transparent mirror, the shape of the general accessories should be 0.1~0.2 smaller than the size of the big body on one side. For the movable accessories on the big body, such as buttons, the shape of the accessories should be 0.1~0.5 smaller than the shape of the big body on one side. The surface shape of the fitting on the body should be consistent with the surface shape of the body, and it can come down from the body surface.
6. Ejection angle (draft angle)
The plastic mold shall be made with a mold angle, or it will be scratched. If the drawing does not indicate it, you can discuss with the mold maker. The mold angle is generally 0.5~3 degrees. If the mold is etched, the mold angle should be larger, 2~5 degrees, depending on the thickness of the etched pattern.

Specification:

FAQ:
1. Where is your factory?
We are a 3000 square meter factory located in Shenzhen, China.
2. Can you invite on site?
We welcome our new and old friends to visit here.
3. How can I get the best quality at the best price?
Our prices are very competitive. Generally, the price depends on the quantity, design and size. If you order more, the price and freight will be cheaper.
4. Can I get a quotation without drawings?
Of course, we are glad to receive your samples, pictures or drafts with detailed dimensions for accurate quotation.
5. If you benefit, will my drawings be disclosed?
No, we pay great attention to protecting the privacy of customers' drawings. If necessary, we can also sign NDA.