Some deburring methods commonly used in precision parts machining

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The deburring process is the most troublesome. Here is a brief introduction to some deburring methods. I hope it will be helpful to everyone.

1. Manual deburring

The most commonly used method uses files, sandpaper, grinding heads, etc. as auxiliary tools. There are artificial files and pneumatic files.

Comment:

The labor cost is expensive, the efficiency is not very high, and 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.

2. Die deburring

Deburring is carried out by making dies and punching machines.

Comment:

A certain die (rough die + fine die) production fee is required, and a plastic die may also be required.

It is suitable for products with relatively simple parting surface, and the efficiency and deburring effect are better than manual work.

3. Grinding and deburring

This kind of deburring includes vibration, sandblasting, roller and other methods, which are widely used by enterprises at present.

Comment:

There is a problem that the removal is not very clean, and it may be necessary to manually deal with the residual burrs or cooperate with other methods to remove the burrs.

Suitable for small products with large batches.

4. Freezing deburring

The burr is quickly embrittled by cooling down, and then the burr is removed by spraying projectiles.

Comment:

It is suitable for products with small burr wall thickness and small products.

5. Thermal deburring

Also called thermal deburring, explosive deburring. Pass some flammable gas into an equipment furnace, and then let the gas explode instantly through the action of some media and conditions, and use the energy generated by the explosion to dissolve and remove the burr.

Comment:

Expensive equipment (disadvantages, mainly one-time cost), high technical requirements for operation, low efficiency, side effects (rust, deformation);

It is mainly used in some high-precision parts fields, such as automotive aerospace and other precision parts.

6. Deburring of engraving machine

Comment:

It is suitable for simple space structure, and the required deburring position is simple and regular.

7. Chemical deburring

Using the principle of electrochemical reaction, the deburring operation is automatically and selectively completed on parts made of metal materials.

Comment:

Suitable for internal burrs that are difficult to remove, suitable for small burrs (thickness less than 7 wires) on pump bodies, valve bodies and other products.

8. Electrolytic deburring

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

Comment:

The electrolyte is corrosive to a certain extent, and the vicinity of the burr of the part is also subjected to electrolysis, the surface will lose its original luster, and even affect the dimensional accuracy. After the workpiece is deburred, it should be cleaned and anti-rust.

Electrolytic deburring is suitable for removing burrs in hidden parts of intersecting holes or parts with complex shapes. The production efficiency is high, and the deburring time generally only takes a few seconds to tens of seconds.

It is suitable for deburring of gears, connecting rods, valve bodies and crankshaft oil passage holes, as well as rounding of sharp corners.

9. High pressure water jet deburring

Using water as the medium, use its instantaneous impact force to remove the burrs and flashes produced after processing, and at the same time achieve the purpose of cleaning.

Comment:

It is mainly used in the heart of automobiles and hydraulic control systems of construction machinery.

10. Ultrasonic deburring

Ultrasonic waves generate instantaneous high pressure to remove burrs.

Comment:

It is mainly aimed at some microscopic burrs. Generally, if the burrs need to be observed with a microscope, you can try to use ultrasonic methods to remove them.

Goodwill Precision Machinery has been deeply involved in the supporting field of high-end precision machining industry for 18 years. It started with precision machining, but it is not limited to the field of precision machining. It has diversified and cross-regional group development of various industrial supporting production bases in Dongguan with 100,000 m² and Suzhou with 30,000 m². m², supply high-end precision parts processing and component assembly, image measurement equipment and services, standard lithium battery testing equipment, non-standard automation, high-end equipment non-marking sheet metal manufacturing, and in Japan technology research and development and sales center, German sales center, international layout The multilingual industrial service network is committed to building a high-tech industrial supporting service enterprise for R&D, production and sales, covering middle and high-end markets such as China, Europe, the United States, and Australia, as well as leading customers in the industry. Provide high-quality services to customers in the fields of driving, semiconductors, robots, optics, new energy, nuclear power, ships, ocean engineering, and aerospace.