What Is The Difference Between 3+2 And 5-axis?

Since the Industrial Revolution, the field of mechanical processing has long been centered on the three-axis processing system (X-axis, Y-axis, and Z-axis). This classic linear motion mode is still the mainstream choice for the production of basic parts in the manufacturing industry due to its mature technology and wide applicability. However, with the continuous increase in the demand for manufacturing precision and production efficiency, engineers continue to explore breakthroughs and innovatively develop cutting-edge technologies such as 3+2-axis processing and 5-axis linkage processing. These two advanced processing methods have reshaped the precision manufacturing landscape with their unique motion logic and technical advantages. A deep understanding of the technical differences, applicable scenarios, and performance characteristics of 3+2-axis and 5-axis linkage processing will provide important decision-making basis for enterprises in key links such as process selection, cost control, and product quality improvement.



contents

1. What is 3+2 axis machining?
1.1 How 3+2 axis machining works
1.2 Advantages of 3+2 axis machining
2. What is 5-axis machining?
2.1 How 5-axis machining works
2.2 Advantages of 5-axis machining
3.3+2 axis and 5-axis machining: Comparison of applicable scenarios
3.1 Applicable scenarios of 3+2 axis machining

4. How to choose the appropriate processing method?
4.1 Choose according to the complexity of the part
4.2 Consider cost factors
4.3 Based on production efficiency requirements
5.Get high-precision 5-axis CNC machined parts

 

1. What is 3+2 axis machining?

1.1 How 3+2 axis machining works
3+2 axis machining is also known as positioning five-axis machining. It is based on traditional three-axis machining (the X axis moves from left to right, the Y axis moves from front to back, and the Z axis moves from top to bottom). On top of this, the tilting and rotating trunnions and rotary tables are added to achieve the movement of two additional rotation axes (the A axis rotates around the X axis, that is, tilting forward and backward; the B axis rotates around the Y axis, that is, tilting from left to right). However, during the machining process, the fourth and fifth axes are mainly used to fix the part in a specific direction. Once the positioning is completed, the typical three-axis machining operation is performed, and the two rotation axes no longer move continuously during the machining process.



1.2 Advantages of 3+2 axis machining
Manufacturing complex features: This technology allows the use of shorter and stronger cutting tools, which can process complex shapes such as steep walls and undercuts in cavities, and the tools can also form specific angles with the cutting surface. At the same time, the spindle head can be closer to the workpiece, achieving high-precision machining while extending the tool life.
Lower programming requirements: Compared with five-axis machining, 3+2-axis machining has a smaller spatial trajectory, a shorter tool movement distance, and a smaller rotational motion, making programming of free-form surface machining more convenient.
Reduce costs and cycle time: Traditional three-axis machining centers need to stop the spindle multiple times to adjust when machining multiple surfaces, while 3+2-axis machining can process five different surfaces at a time, reducing the number of setups in the manufacturing process, thereby reducing cycle time and production costs.

 

2. What is 5-axis machining?

2.1 How 5-axis machining works
5 Axis CNC Machine enable cutting tools to move simultaneously on five axis, that is, three linear axis (X, Y, Z axes) and two rotation axes (A axis, B axis) work together to manufacture the required parts. This synchronous motion enables precise machining of complex shapes and contours, and the tool can approach the part from any direction, greatly improving the flexibility and accuracy of machining.

2.2 Advantages of 5-axis machining
High precision and accuracy: The minimum setup required for 5 Axis Machining reduces the possibility of errors, reduces human interference, and improves the capabilities of CNC precision machining, enabling excellent machining tolerances and ensuring part quality.
High cutting speed and repeatability: The cutting tool is usually tangential to the cutting surface, and each rotation can remove more material, shortening the machining cycle. Some machine tool configurations can use shorter cutting tools, extending tool life and ensuring machining repeatability.
Ability to manufacture complex parts: Five surfaces can be machined simultaneously, and curved parts and other multi-sided parts can be machined with a single structure. Its additional rotation function makes it easy to machine complex designs and geometries, and the workpiece can be rotated during the machining process to achieve the desired geometry without complex fixtures.
Better surface finish: The additional axis ensures that the workpiece is properly aligned, bringing it closer to the cutting tool, and shorter tools can be used to cut at high speeds, while minimizing vibration, reducing the chance of "chatter" marks on the final product, and obtaining excellent surface finish, reducing post-processing costs and time.
Reduce costs and cycle time: Due to the fast processing speed, five-axis machined parts can usually be completed in one operation, reducing setup time and cost. Using shorter and longer-lasting tools reduces the number of tool changes, further saving processing costs and time.

3.3+2 axis and 5-axis machining: Comparison of applicable scenarios
 

3.1 Applicable scenarios of 3+2 axis machining
3+2 axis machining is mainly suitable for plane machining projects. It is more suitable for some parts that have high precision requirements and relatively uncomplicated shapes, but need to be machined from multiple angles. For example, it is widely used in scenarios such as plane cavity machining of some molds and multi-faceted machining of simple mechanical parts. Because its programming is relatively simple and the cost is low, for some small and medium-sized enterprises, it can effectively control costs while meeting production needs.
3.2 Applicable scenarios of 5-axis linkage machining
5-axis linkage machining is more suitable for complex contour surface machining and is widely used in industries such as aerospace, medical, and energy. In the aerospace industry, parts with organic shapes, contour edges and complex shapes are manufactured, such as aircraft engine blades, aero-engine integral blade disks, etc.; the medical industry produces implants, complex surgical instruments, etc.; the energy industry processes complex parts in solar power generation systems and power stations. These industries have extremely high requirements for part accuracy and complexity, and 5-axis linkage machining can meet their strict quality standards.

4. How to choose the appropriate processing method?

4.1 Choose according to the complexity of the part
If the part shape is simple, it is mainly plane processing, and occasionally some less complex bevels or holes need to be processed, 3+2 axis processing can usually meet the needs. However, if the part has complex curved surfaces and contours, such as blades and sculpture parts, 5-axis linkage processing is more advantageous and can accurately process complex shapes at one time.

4.2 Consider cost factors
From the perspective of equipment procurement cost, 3+2 axis processing equipment is relatively cheap and has low maintenance costs. If the company has a limited budget and the processing tasks are mostly conventional parts, 3+2 axis processing is an economical choice. However, for enterprises with long-term high-precision and complex parts processing needs, although the purchase and maintenance costs of 5-axis linkage processing equipment are high, in the long run, its high efficiency and high precision can reduce unit costs and improve product competitiveness.
4.3 Based on production efficiency requirements
When processing complex parts, 3+2 axis machining is relatively limited in production efficiency because tool paths may overlap and angles need to be adjusted multiple times. 5-axis linkage machining can complete complex machining in one clamping, greatly shorten the machining cycle, and improve production efficiency. For orders with tight delivery dates and batch production of complex parts, 5-axis linkage machining can better meet production schedules.

5.Get high-precision 5-axis CNC machined parts
In the field of precision manufacturing, it is crucial to deeply understand the difference between 5-axis and 3 + 2-axis machining, but choosing a trusted CNC machining partner is equally important to obtain high-quality, high-precision parts. With industry-leading equipment configuration, including 3 + 2-axis machine tools and synchronous 5-Axis Desktop Cnc, xinshan provides customers with a full range of diversified machining solutions to ensure high precision and high accuracy of parts machining from the source.

Relying on self-developed intelligent machining systems and innovative processes, xinshan not only greatly simplifies the manufacturing process and optimizes production efficiency, but also pushes precision manufacturing standards to new heights through a strict quality control system. We have brought together a team of engineers who are proficient in CNC machining technology and experienced. With deep professional knowledge and superb skills, we can tailor excellent Desktop Cnc 5 Axis services for projects of different industries and complexities. From process planning at the beginning of the project to detail control during the production process, we always insist on recommending the most suitable machining process for customers to ensure that every part meets or exceeds the expected standards.
In addition, Xinshan's technical support team follows up the project progress throughout the process and handles various issues in a timely manner with a 7×24-hour response mechanism, so that customers do not need to worry about emergencies in the production process. Contact us now to discuss your project needs in depth with senior technical consultants. You can also upload your design files directly to our online quotation platform to quickly obtain professional DFM (manufacturability analysis) reports and accurate quotations, and start an efficient and reliable precision machining journey.