CNC, 3D printing, sheet metal and other processes, professional production of a variety of metal, plastic hand model.



CNC 3, 4, 5 axis CNC in the end what is the difference?(cnc machining)

Jul 06,21

CNC 3, 4, 5 axis CNC in the end what is the difference?(cnc machining)

Numerical control machining is the manufacture and processing of parts and products under computer control.

CNC machining involves shaping and resizing a piece of material, a workpiece, by automatically removing it, using a computer numerical control (CNC) machine tool.Usually, the material used is plastic or metal, and when the removal is complete, the finished product or product has been produced.
This process is also known as subtraction manufacturing.For NC machining, computer applications are used to control the movement of the machine tool.
Common types of CNC machine tools
CNC machining processes include the most common milling and turning, followed by grinding, electrical discharge machining, etc.
Milling is the use of a rotating cutter on the workpiece surface, moving along 3, 4, or 5 axes.Milling is basically cutting or trimming a work piece and can quickly produce complex geometric shapes and precision parts from metals or thermoplastics.

Turning is the use of lathes to produce parts containing cylindrical features.The workpiece rotates on the shaft and comes into contact with the precision turning tool to form circular edges, radial and axial holes, grooves and grooves.
Advantages of CNC machining
Compared with the traditional manual machining, CNC machining speed is much faster.As long as the computer code is correct and in line with the design, the finished product has high dimensional accuracy and small error.
Numerical control manufacturing is an ideal rapid prototyping manufacturing method.It can also be used to manufacture end-use products and components, but is usually only cost-effective in short production runs with low volume.

Multi-axis CNC milling involves the removal of material using a rotating cutter.Either the workpiece remains stationary and the tool moves to the workpiece, or the workpiece enters the machine tool at a predetermined Angle.The more axes of motion a machine has, the more complex and faster the molding process will be.
Three-axis CNC milling is still one of the most popular and widely used machining processes.In 3-axis machining, the workpiece remains fixed and the rotating tool cuts along the X, Y, and Z axes.This is a relatively simple form of CNC machining that can produce products of simple structure.It is not suitable for processing complex geometries or products with complex components.
Since cutting can only be done on three axes, the machining speed may also be slower than four - or five-axis CNC, as the workpiece may need to be manually repositioned to obtain the desired shape.
In four-axis CNC milling, a fourth axis is added to the motion of the cutting tool, allowing rotation about the X-axis.There are now four axes -- X, Y, Z, and A (rotated about X).Most 4-axis CNC machines also allow the workpiece to rotate, known as the B-axis, so that the machine can act as both a milling machine and a lathe.
If you need to drill holes in the side of a part or in the curved surface of a cylinder, 4-axis CNC machining is the way to go.It greatly speeds up the machining process and has high machining accuracy.
Five-axis CNC milling has an extra axis of rotation compared to four-axis CNC milling.The fifth axis is rotated about the Y-axis, also called the b-axis.The workpiece may also be rotated on some machines, sometimes referred to as the B-axis or C-axis.
Due to the high versatility of 5-axis NC machining, it is used to manufacture complex precision parts.Such as artificial limbs or bone medical parts, aerospace parts, titanium parts, oil and gas mechanical parts, military products, etc.