CNC machining is a type of machining process.
CNC machining is a subtractive manufacturing technology, which means CNC machining services removes material from the workpiece. Cutting tools rotate at high speed (thousands of RPM) to remove material from a solid block in order to produce a part based on a computer-aided design (CAD) model in CNC. Titanium CNC Machining Services can be used on both metals and plastics.

Machined parts have high dimensional accuracy and tight tolerances, which makes them ideal for precision applications. High-volume production as well as one-off jobs are both suitable for CNC machines. Even when comparing the costs of CNC machining services and 3D printing, Titanium CNC Machining Services is currently the most cost-effective method of producing metal prototypes.

CNC allows for a great deal of design flexibility, but there are some limitations to this flexibility. These limitations are related to the fundamental mechanics of the cutting process and are primarily related to the geometry of the tool and the accessibility of the tool.

Obtaining access to tools
In order to remove material from the workpiece, the cutting tool approaches it directly from above. CNC machines are unable to machine features that cannot be accessed in this manner.

A good design practice is to align all of the features of your model (holes, cavities, vertical walls, and so on) to one of the six main principal directions (see Figure 1). However, because 5-axis CNC systems have advanced workpiece holding capabilities, this rule should be regarded as a recommendation rather than a restriction.

When machining features with a large depth to width ratio, CNC machining services China suppliers is also necessary to consider tool access. When working at the bottom of a deep cavity, for example, it is necessary to use special tools with long shafts. In turn, this reduces the stiffness of the end effector, increasing vibrations and lowering the accuracy that can be achieved.

Machine configurations and part orientation
In the previous section, CNC machining services was stated that one of the most significant design limitations in CNC machining services China suppliers is tool access. It is necessary to rotate the workpiece several times in order to reach all of the model's surfaces.

For example, the part shown in the image above must be rotated three times in total: twice to machine the holes along the two main principal directions and a third time to gain access to the back side of the part, as shown in the diagram above.

A new coordinate system must be defined every time a workpiece is rotated, and the machine must be re-calibrated after each rotation.

It is critical to consider machine setups when designing for two reasons: first, it is more efficient.
Routing and realigning the part necessitates manual labor, which increases the overall machining time required. This is usually acceptable if the part needs to be rotated up to three or four times, but anything more than that is considered to be excessive. You can find more design tips for lowering the cost of CNC cutting by visiting this page.

Two features must be machined in the same setup in order to achieve the highest possible relative positional accuracy. As a result of the new callication step, there is a small (but not insignificant) error introduced into the system.