Burrs appear in metal processing is a problem that everyone will encounter, such as drilling, turning, milling, plate cutting and other processes will produce burrs, and burrs are very easy to cut people. So today, Shanghai to burr machine manufacturers to tell you about the process of removing burrs.
First, artificial deburring
General small factories commonly choose the method, with file, sandpaper, grinding head as the basic tool. Among them, the file has manual file and pneumatic file. The labor cost is high, the efficiency is low, and it is difficult to remove the irregular perforation jack. Scope of application: The technical requirements of workers are not high, the applicable burr is small, and the structure of the parts is complex.
Two, die deburring
Using a die, the die is used to deburr the press. To a die (rough die + fine die) cost, may also need to add a set of shaping die. Scope of application: Suitable for complex parting surface workpiece, efficiency and deburring effect is better than manual.
Three, grinding and deburring
There are many kinds of methods for grinding and deburring, among which the common ones include: oscillation, sandblasting, roller and so on. There are drawbacks of unclean removal, and some also need to manually dispose of the remaining burrs or other methods to deburr. Scope of application: Suitable for large batch of small parts.
Four, frozen deburring
The surface of the burr is brittle by cooling, and then the burr is removed by erupting projectiles. The equipment is about two or three hundred thousand, not all companies can use; Scope of application: Suitable for products with small burr wall thickness and small workpiece.
Five, heat explosion to deburring
Or called thermal deburring, blasting deburring. Some easy gas is passed into the furnace of the equipment, and then through some media and conditions, the gas is exploded instantaneously, and the energy emitted by the explosion is used to dissolve and remove burrs. The equipment is very expensive (millions), the operator has high technical requirements, low efficiency, and side effects (rust, deformation); Scope of application: Used in some high-precision parts, such as cars, spacecraft and other precision parts.
Six, engraving machine deburring
The equipment is not very expensive (tens of thousands), scope of application: It is suitable for complex spatial structure, and the required deburring parts are complex and regular.
Seven, chemical deburring
Electrochemical principle, automatic and selective deburring of parts made of metal materials. It is suitable for internal burrs that are difficult to remove. It is suitable for situations where the burr of the workpiece such as the pump body and the valve body is very large (the thickness is less than 7 wires).
Eight, electrolytic deburring
An electrolytic machining method using electrolysis to remove burrs from metal parts. The electrolyte has a certain corrosion, the parts around the burr is also electrolysis, the surface will lose the original luster, affecting the scale accuracy, the workpiece should be cleaned and anti-rust disposal after deburring.
Scope of application: It is suitable for removing burrs of concealed cross-holes or cluttered parts in parts, with high efficiency, deburring takes only a few seconds to tens of seconds. Suitable for deburring gear, connecting rod, valve body and crankshaft orifice, as well as chamfering of sharp corners.
Nine, high-pressure water spray to remove burrs
With water as the medium, it uses its instantaneous impact force to remove the burrs and flash after processing, and the cleaning effect. The equipment is expensive, and most of it is used in the heart of the car and the hydraulic control system of the engineering machine.
10. Ultrasonic deburring
Ultrasound uses instantaneous high pressure to remove burrs. For some microscopic burrs, if the burr needs to be viewed with a microscope, it can be tried to remove by ultrasonic method.
In order to remove burrs, a secondary operation called deburring is usually required. 3 deburring and edge finishing of precision parts can account for up to 30% of the cost of finished parts. In addition, secondary finishing operations are difficult to automate, so burrs really become a tricky problem.
