Precision Stainless Steel CNC Machining Parts
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Precision Stainless Steel CNC Machining Parts

CNC (Computer Numerical Control) Machining is a subtractive machining technology 
 
that entails both milling and turning.
 
The process uses physical contact to remove material from a solid block of material
 
 (known as the blank or workpiece ), using a range of cutting tools.
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What is a CNC machine?

CNC (Computer Numerical Control) Machining is a subtractive machining technology that entails both milling and turning. The process uses physical contact to remove material from a solid block of material (known as the blank or workpiece ), using a range of cutting tools.


What are the different types of CNC machining?

Intro into the types of CNC machines here and add a flow diagram showing how the methods are related to one another.


What are 3-axis CNC machines?

There are two main types of 3-axis machining; CNC milling and CNC turning. These two methods allow the tool to move in three linear axes relative to a fixed workpiece. CNC Milling and CNC Turning remove material from a fixed workplace using different cutting techniques.


CNC Milling

3-axis CNC Milling is a subtractive machining process that uses a cutting tool rotating at a high speed to remove material from a fixed workpiece. The tool is attached to a spindle and can move along three linear axes.

CNC milling is the most widely used CNC process, as most simple geometries can be produced to a high accuracy using the method. Added with the relative ease of set-up and operation, the start-up machining costs are low. However, 3-axis CNC milling has limitations when geometries become more complex. As there are only three axes to work with, there may be areas the cutting tools will not be able to reach. Therefore, there are some design restrictions for 3-axis CNC milling; these will be covered later on in the design guidelines section.


What is 5-axis indexed CNC milling?

5-axis indexed milling, or 3 + 2 machining, works by rotating the workpiece around the B and C axis to the required position. The workpiece then remains stationary while the tool makes the desired cuts moving about its three linear axes. When changing the cutting location, the B and C axis will re-orientate the workpiece and then remain stationary again for that cutting location. This machining method is also known as 3+2 CNC milling since the additional two degrees of freedom do not work simultaneously with the three linear axes of the tool.

The main advantage of this method is that it eliminates the need to manually reposition the workpiece. This reduced the manufacturing time and increases the accuracy of parts with complex geometries compared to using 3-axis milling.







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