For CNC machines, knives are one of the indispensable tools. The knife acts directly on the surface of the material to engrave and cut the plate. After long-term use, the tool will produce a certain amount of wear, so how can the service life of the tool be extended when using the CNC machine? This post provides some reference methods, I hope it will be helpful to you.

1. It is very important to use normal and suitable collets.

Those collets with cross-sections, insufficient roundness, severe wear and tapers in the inner hole cannot provide sufficient clamping force, resulting in severe damage of tools and workpiece. In addition, check whether the contact is uneven or grooved every time.

2. The contact between the tool shank and the collet should be well-connected.

The tool must be fully inserted into the collet and tightened firmly, so that the necessary clamping force can be provided during the use of the tool. And router bits cannot be inserted only partially into the collet, otherwise the tool shank is easily broken.

3. Understand the generation and work principle of the cutter

If you know the law of cutting force, you can select the direction of cutting force which can improve the clamping stiffness of parts. In addition, the radial force can be changed into the axial force direction by considering the method of reducing the cutting depth.

4. Choose the appropriate feed rate:

The cutting speed of different wood is very important for the use life of the tool and the processing quality of the workpiece. A reasonable cutting amount will make cutting faster, better and safer.
High-speed cutting can be used for general wood. Harder wood need tools with larger diameters and cut at lower speed. The cutting progress should be continuous and stable. If there is a stop during cutting, it will burn the tool and greatly reduce the tool life.
Cutting speed depends on three aspects:
(1) Material of cutting object
(2) Equipment for clamping
(3) Types and specifications of tools used
If a larger diameter tool is used, cutting can be completed after several feeds, which can increase the service life of the tool and operate more safely.

5. Choose machining plan reasonably

Sometimes special processing method is required to improve production efficiency. For example, for single piece and short-cycle production of large hole parts, using integral spiral milling cutter to mill holes (compared with drilling large holes) will be the most efficient and economical processing scheme. Another more unusual processing example is the use of plunge milling. It can increase the production efficiency by more than 4 times than that with ordinary end mills.

6. Use optimized tool based on the machining material

In the machine shop that needs processing various materials, be careful to use the so-called “universal tool” for machining. When you change the material, remember to change a tool with optimized geometry. This will improve production efficiency and obtain good economic benefits.

7. Design and optimize the ideal tool path

In order to ensure that the cutting system has the maximum rigidity and can carry out large feed rate cutting in the process of machining.
 
ACCTEK is a professional manufacturer of CNC Router machines. If your shop needs carving equipment, we can provide you with free consulting services. If you encounter an unsolvable problem while using the cnc router, you can also leave us a message. ACCTEK has a professional technical team that can provide you with necessary help.