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How to Deburr After CNC Machining?

The most common is manual burr removal. Although the labor cost is high, it is still popular in China. Let's take a look at our deburring complete list.

1. CNC machining die deburring

Deburring is carried out by using a production die and a punch.

Brief comment:

Die (rough die + fine die) production fee is required, and shaping die may also be required. It is suitable for products with simple parting surfaces. The efficiency and deburring effect are better than those of manual work.

2. CNC precision machining, grinding and deburring

This type of deburring includes vibration, sandblasting, rollers, etc., and is currently used by many companies.

Brief comment:

There is a problem that the removal is not very clean, and it may be necessary to manually process the residual burr or cooperate with other methods to deburr. Suitable for small products in larger batches.

3. CNC machining and freezing deburring

Use cooling to quickly embrittle the burrs, and then spray projectiles to remove the burrs.

Brief comment:

The price of the equipment is about several hundred thousand, which is suitable for products with small burr wall thickness and small products.

4. Hot blast deburring for CNC machining

It is also called thermal deburring or explosion deburring. By passing some flammable gas into an equipment furnace, and then through the action of some media and conditions, the gas is instantly exploded and the energy generated by the explosion is used to dissolve and remove burrs.

Brief comment:

Its equipment is expensive (millions of levels). It has high technical requirements for operation, low efficiency and side effects (rusting, deformation). Mainly used in some high-precision parts fields, such as automotive and aerospace precision parts.

5. Deburring of CNC engraving machining

Brief comment:

The price of the equipment is not very expensive (tens of thousands), and it is suitable for simple space structure and simple and regular deburring positions.

6. Chemical deburring of CNC machining

Use the principle of electrochemical reaction. The parts made of metal materials can be automatically and selectively deburred.

Brief comment:

It is suitable for internal burrs that are difficult to remove, and suitable for small burrs (thickness less than 7 wires) of products such as pump bodies and valve bodies.

7. Electrolytic deburring of CNC machining

An electrolytic machining method that uses electrolysis to remove burrs from metal parts.

Brief comment:

The electrolyte is corrosive and the parts near the burr are also subjected to electrolysis. The surface will lose its original luster and even affect the dimensional accuracy. The workpiece should be cleaned and rust-proofed after deburring.

Electrolytic deburring processed by CNC machining is suitable for removing burrs on hidden parts of intersecting holes or parts with complex shapes. The production efficiency is high, and the deburring time is generally only a few seconds to tens of seconds. It is suitable for deburring gears, connecting rods, valve bodies and crankshaft oil passage holes, etc., as well as rounding of sharp corners.

8. CNC machining high-pressure water jet deburring

Use water as a medium. Use its instant impact force to remove burrs and flashes generated after processing, and at the same time achieve the purpose of cleaning.

Its equipment is expensive. It is mainly used in the heart of the car and the hydraulic control system of construction machinery.

9. Ultrasonic deburring of CNC machining

Ultrasonic produces instant high pressure to remove burrs.

10. CNC machining manual deburring

This is also a method commonly used by general enterprises. It uses files, sandpaper, grinding heads, etc. as auxiliary tools. The files include manual file and pneumatic stagger.

Brief comment:

The labor cost is more expensive and the efficiency is not very high. It is difficult to remove complex cross holes. The technical requirements for workers are not very high and it is suitable for products with small burrs and simple product structure.

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