What is the best deburring equipment? It may be the magnetic deburring you mentioned, or it may be other related equipment, but whether it is good or not, you can only know if it is a product that is suitable for you by trying it. The one with higher cost performance is the best. Let me introduce some good equipment.
The most commonly used methods for deburring
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Common methods for trimming and deburring
Although burrs are not Large, but it directly affects the quality of the product. Therefore, in recent years, as various industries have attached great importance to burr removal, deburring methods have emerged in endlessly. The following are the main types of trimming/deburring commonly used today:
1. The traditional methods of manual deburring are steel files, sandpaper, and grinding; and trimming knives have gradually replaced these traditional methods. , it is simple and convenient to use, does not require technical processing, saves costs and is environmentally friendly.
2. Chemical deburring. Using the principle of electrochemical reaction, parts made of metal materials can be automatically and selectively deburred. It can be widely used for deburring processing of pump bodies, valve bodies, connecting rods, plunger needle valve couplings and other parts made of different metal materials in pneumatic, hydraulic, engineering machinery, nozzle oil pumps, automobiles, engines and other industries. Suitable for internal burrs that are difficult to remove, parts after heat treatment and finishing.
3. Electrolytic deburring is an electrolytic processing method that uses electrolysis to remove burrs from metal parts, referred to as ECD in English. Fix the tool cathode (usually made of brass) near the burr part of the workpiece, with a certain gap (usually 0.3 to 1 mm) between them. The conductive part of the tool cathode is aligned with the burr edge, and the other surfaces are covered with an insulating layer to concentrate the electrolysis on the burr part. During processing, the cathode of the tool is connected to the negative pole of the DC power supply, and the workpiece is connected to the positive pole of the DC power supply. A low-pressure electrolyte (usually sodium nitrate or sodium chlorate aqueous solution) with a pressure of 0.1 to 0.3 MPa flows between the workpiece and the cathode. When the DC power supply is turned on, the burrs will dissolve in the anode and be removed, and will be taken away by the electrolyte. The electrolyte is corrosive to a certain extent, and the workpiece should be cleaned and rust-proofed after deburring. Electrolytic deburring is suitable for removing burrs from cross holes in hidden parts or parts with complex shapes. It has high production efficiency and the deburring time generally only takes a few seconds to tens of seconds. This method is commonly used for deburring gears, splines, connecting rods, valve bodies and crankshaft oil passage openings, as well as sharp corner rounding, etc. The disadvantage is that the parts near the burrs are also affected by electrolysis, and the surface will lose its original luster, and even affect the dimensional accuracy
4. Ultrasonic deburring When the ultrasonic energy generated by ultrasonic waves acts on the liquid that is vibrating in a sparse state. , will be torn into very small holes (that is, there is a vacuum inside). When these holes burst, they will generate an instantaneous pressure of up to several hundred atmospheres, and this phenomenon is called cavitation. Ultrasonic deburring uses the instantaneous impact force of hundreds of atmospheres produced by the "cavitation phenomenon" to remove the burrs attached to the components. Ultrasonic deburring is not suitable for all burrs. It mainly targets some microscopic burrs. Generally, if the burrs need to be observed with a microscope, you can try to use ultrasonic method to remove them. For burrs that are visible to the naked eye, it mainly depends on the strength of the bond. Ultrasonic waves can be used for burrs with weak bond strength. Generally, ultrasonic methods are not possible for burrs that can only be treated with a knife. Advantages and disadvantages of ultrasonic deburring
5. High-pressure water jet deburring, as the name suggests, uses water as a medium, using its instantaneous impact force to remove burrs and flash generated after processing, and at the same time achieve the purpose of cleaning . After many experiments and tests, the suitable pressure was finally found to be 30MPa-50MPa. If the pressure is insufficient, the deburring effect cannot be achieved. If the pressure is too high, although the burrs can be removed, there is a risk of damaging the workpiece.
Usually the liquid pressure that hydraulic parts bear when in use is within 20Mpa. The burr residue that cannot be removed with a pressure of 50MPa has a very small chance of falling off under a working pressure of several MPa. It can also be considered as the root of the burr. Residue is part of the artifact. Nowadays, there are more and more manufacturers of high-pressure water deburring equipment, which can be simply divided into two categories: workpiece movable type and nozzle movable type. The mobile workpiece type has low cost and is suitable for deburring and cleaning simple valve bodies. Its disadvantages are that the fit between the nozzle and the valve body is not ideal, and the burr removal effect of cross holes and oblique holes inside the valve body is not good; the mobile nozzle type is controlled by CNC It can effectively adjust the distance between the nozzle and the valve body burr generating part, and effectively correspond to the cross holes, oblique holes and blind hole burrs inside the valve body. However, due to the high cost of this equipment, so far it has only been used in the heart of automobiles and engineering machinery. Only hydraulic control systems can generally enjoy this favor.
6. Thermal explosion deburring, also known as electrothermal deburring, is to rush some flammable gases into an equipment furnace, and then through the action of some media and conditions, the gases can be instantly Explosion, using the energy generated by the explosion to dissolve and remove burrs. The explosion method is mainly used in some high-precision parts fields, such as automotive and aerospace precision parts. This process has good applications for some products where the burrs are located in remote areas and where traditional processes are more difficult. It has certain technical requirements and has the advantage of maintaining the original mechanical properties of the product, but it also has certain limitations. First, Production efficiency is generally low. Since this process requires a relatively strict environment, the quantity that can be processed in large batches in this kind of explosive equipment is relatively limited. Second, the processing cost is high. Purchasing an explosive deburring equipment generally costs millions. Many small and medium-sized enterprises simply cannot afford such expenses. Third, it can easily cause the product to rust. Products in high-temperature explosion furnaces can easily cause rust. Fourth, the workpiece is easily deformed. Fifth, the operation has certain technical requirements and is not easy for ordinary people to operate.
7. Freeze trimming and deburring. The thickness of the flash (or burr) of rubber, plastic products, zinc-magnesium-aluminum alloy and other products is much thinner than the thickness of the product, so the flash (or burr) is The embrittlement speed is faster than the embrittlement speed of the product. During the period when the flash (or burr) is embrittled but the product is not embrittled, the freezing deburring (trimming) machine hits the product by ejecting projectiles, thereby removing Flash (or burr) in brittle condition.
The freezing deburring (trimming) machine uses the ultra-low temperature of liquid nitrogen to quickly embrittle the flash edges of rubber, plastic products, and zinc-magnesium-aluminum alloys. In this state, it passes through the high-speed The ejected frozen particles impact the burrs (or flashes) of the product, thereby achieving special deburring that can remove the burrs (or flashes) of the product with high quality and efficiency while maintaining all the physical properties of the product itself. (edging) equipment. It can greatly improve the trimming (deburring) accuracy of products and has a high degree of intensification. At present, this kind of equipment has become an indispensable back-end trimming and deburring equipment for precision rubber and plastic products and die-casting enterprises.