xiehe model

Method for removing metal burrs by cnc machining of numerical control parts

Burrs are produced during metal casting, milling or electroplating, and there are residues or extremely fine microscopic metal particles on the surface of metal parts. The appearance of burrs will greatly reduce the quality standard of metal workpieces, so they should be avoided as much as possible, or some burrs should be removed. The easiest way to deburr is as follows. The following Xiehe CNC machining parts manufacturers will introduce to you.

1. Manual deburring

Operators use tools such as files, sandpaper, and grinding heads to polish workpieces and remove burrs. This method does not require high technical requirements for workers, and is suitable for products with small burrs and simple product structures. Therefore, it is also a deburring method commonly used by enterprises. There are two types of files: manual files and pneumatic files. Manual filing is more expensive, the deburring efficiency is not very high, and complex cross holes are difficult to remove.

2. Mold deburring

Burrs are removed by making molds and punches. The deburring of the mold requires a certain manufacturing cost for both the rough mold and the fine mold, and it may also be necessary to make a forming mold. It is suitable for products with relatively simple parting surface, and the efficiency and effect of deburring are better than manual methods.

3. Grinding and deburring

Grinding and deburring is a method of removing burrs through vibration, sandblasting, rollers, etc., and is currently widely used by enterprises. The problem with grinding and deburring is that sometimes the removal is not very clean, and subsequent manual processing or other methods of deburring may be required. This method is suitable for large batches of small products.

4. Freezing deburring

This is a method of using the sudden drop in temperature to make the burrs embrittle quickly, and then spray projectiles to remove the burrs. Freezing deburring is suitable for products with small burr wall thickness and small workpieces. The price of the whole set of equipment is not low, about RMB 2.3 million.

5. Thermal deburring

Thermal deburring is also called thermal deburring and explosive deburring. This is to pass some easily generated gas into the equipment furnace, and then make the gas explode instantly through the action of certain media and conditions, and use the energy generated by the explosion to dissolve and remove burrs. The equipment required by this method is expensive, usually reaching more than ten thousand yuan, and the requirements for operating technology are also very high. Deburring is inefficient and can cause side effects such as rust and deformation. Thermal deburring is mainly used for some high-precision parts, such as automobiles, aerospace and other precision parts.

6. Deburring of engraving machine

The burrs on the workpiece are removed by the engraving machine. The equipment is not very expensive, generally only tens of thousands of yuan. It is suitable for removing burrs with simple spatial structure and simple and regular positions.

7. Chemical deburring

Chemical deburring is a process of automatically and selectively removing burrs on metal parts by using the principle of electrochemical reaction. It is suitable for internal burrs that are difficult to remove, especially for removing small burrs on pump bodies, valve bodies and other products.

8. Electrolytic deburring

A method for electrolytic deburring of CNC machining parts. This method will bring certain side effects, because the electrolyte is corrosive, and the vicinity of the burr will be electrolyzed, the surface will lose its luster, and even the dimensional accuracy will be affected. Therefore, the workpiece should be cleaned and rust-proofed after electrolytic deburring. This method is suitable for removing burrs in hidden holes or complex-shaped burrs. High production efficiency, one operation usually 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.