Deburring type and hazardous mechanical parts processing methods can be roughly divided into material processing, deformation processing, and additional processing. In various processes, the excess portion derived from the machined part that does not conform to the required shape and size is a burr. The production of burrs varies with the processing method. According to the different processing methods, the burrs can be roughly divided into:

Cast burr: Excess material produced at the joint of the mold or at the root of the gate. The size of the burr is generally expressed in millimeters.

Forged burr: at the joint of the metal mold, due to the plastic deformation of the forging material. Electric welding, gas welding burr: welding burr, is the filler at the weld protruding from the surface of the burr on the part; gas welding burr, is the slag overflowing from the slit when the gas cuts.

Stamping burr: When punching, there is a gap between the punch on the die and the die, or there is a gap between the cutters at the slit, and burrs are caused by the wear of the die. The shape of the punch burr varies depending on the material of the plate, the thickness of the plate, the gap between the upper and lower dies, the shape of the stamped part, and the like.

Machining burrs: machining methods such as turning, milling, planing, grinding, drilling, and reaming can also produce burrs. The burrs produced by various processing methods vary in shape depending on the tool and process parameters. Plastic forming burrs: As with casting burrs, burrs are produced at the joints of plastic molds.

Due to the presence of burrs, the entire mechanical system will not work properly, resulting in reduced reliability and stability. When a machine with burrs is mechanically moved or vibrated, the burrs that are detached may cause premature wear and noise of the sliding surface of the machine, and even cause the mechanism to become stuck and malfunction. Some electrical systems may be burred when moving with the main engine. If the system is short-circuited or the magnetic field is damaged, it will affect the normal operation of the system. For hydraulic system components, if the burr falls off, the burr will exist in the tiny working gap of each hydraulic component, causing the spool to become stuck and the circuit or filter to be blocked. The accident can also cause fluid turbulence or laminar flow, reducing the performance of the system. Japanese hydraulic experts believe that 70% of the causes affecting the performance and life of hydraulic components are caused by burrs; for transformers, the core with burrs increases the iron loss of iron core by 20 to 90%, and increases with frequency. . The existence of burrs also affects the assembly quality of the mechanical system, affects the processing quality of the subsequent processing steps of the parts and the accuracy of the test results

1, manual deburring

This is also a common method used by general enterprises, using sickles, sandpaper, grinding heads, etc. as auxiliary tools. The file has a manual file and a pneumatic shift.

Brief comment:

Labor costs are expensive, efficiency is not very high, and complex cross holes are difficult to remove.

The technical requirements for workers are not very high, and products with small burrs and simple product structure are suitable.

2, die deburring

The burr is made by making a die with a punch.

Brief comment:

A certain die (rough die + fine die) production cost is required, and it may be necessary to make a shaping die.

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

3, grinding deburring

Such deburring includes vibration, sand blasting, rollerting, etc. Currently, enterprises use more.

Brief comment:

There is a problem that the removal is not very clean, and it may be necessary to manually process the residual burrs or to deburr other ways.

Suitable for small products with large batch sizes.

4, frozen deburring

The burr is quickly embrittled by cooling, and then the projectile is sprayed to remove the burr.

Brief comment:

The price of equipment is about 200,000 and 300,000;

Suitable for products with small wall thickness and small product.

5, hot deburring

Also called heat to deburring, exploding to deburring. By passing some of the easy gas into a furnace of the equipment, and then through some medium and conditions, the gas is instantaneously exploded, and the energy generated by the explosion is used to dissolve and remove the burr.

Brief comment:

Expensive equipment (up to millions of prices), high technical requirements, low efficiency, side effects (rust, deformation);

Mainly used in some high-precision parts and components, such as automotive and aerospace precision parts.

6, engraving machine deburring

Comment: The price of the equipment is not very expensive (tens of thousands). It is suitable for the simple spatial structure and the required deburring position is simple and regular.

7, chemical deburring

Deburring is automatically and selectively performed on parts made of metal materials by the principle of electrochemical reaction.

Brief comment:

Suitable for internal burrs that are difficult to remove, suitable for small burrs (thickness less than 7 filaments) for pump bodies, valve bodies, etc.

8, electrolytic deburring

An electrolytic processing method for removing burrs of metal parts by electrolysis.

Brief comment:

The electrolyte is corrosive, 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 rust-proofed.

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

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

9, high pressure water jet deburring

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

Comment: The equipment is expensive, mainly used in the heart of the car and the hydraulic control system of the construction machinery.

10, ultrasonic deburring

Ultrasonic waves produce an instantaneous high pressure to remove burrs.

Comment: Mainly for some micro burrs, generally if the burr needs to be observed with a microscope, you can try to remove it by ultrasonic method

Many flat sheet metal processing customers (eg, stamping, laser cutting, etc.) have no particularly demanding requirements for deburring accuracy, but need to meet large-scale deburring processing. The basic requirements of these customers must be two:

The first is that the plane and corners are all polished and deburred; the second is high efficiency. This can meet the needs of high-volume processing and reduce costs by improving efficiency. In response to this situation, the three-unit  deburring machine FB 384  multi-function deburring and polishing chamfering equipment provided by Loeser has been recognized by customers.

The machine is composed of a set of sanding wheels + a set of brush + polishing wheel.

First of all, the work efficiency is high. The sanding wheel grinding process has the advantages of heavy cutting and deburring processing and high processing efficiency. Because the flat workpiece has a large deburring area, the workload is large and the edges are small. Only by first solving the ergonomic bottleneck of planar processing, the entire deburring process can be accelerated.

The second function is all. The sander is highly efficient, but it can only be machined on the plane, but the corner deburring is powerless. The brush disk configuration can only be processed on the edge but not on the plane. By combining the two processes, it is possible to complement each other, which not only satisfies the deburring requirements, but also enables efficient machining. In addition, the sander also has a drawing function, and the polishing wheel can make the surface treatment more perfect

Plane sheet metal deburring machine. Using the universal grinding wheel to rotate at high speed, the sand line slides over the corner surface of the workpiece, and the burrs are evenly removed and the chamfered corners are precisely processed. The main part is chamfered, and the friction on the plane is very small.

Description:

1. Low cost: consumables are unbound and limited

2. Fast processing speed, according to the processing efficiency requirements, optional single or multi-unit models, processing line speed adjustable from 0.1-28 meters per minute

3. Variable frequency adjustment to meet various processing needs

4. Uniform processing, while not hurting the positive plane, does not hurt the protective film

5. Easy to operate, put the product on the conveyor belt and send it automatically through the machine

6. Cutting friction force digital display, frequency, conveying speed digitally concise and stable

7. The finished product is not deformed after processing, high efficiency, does not affect dimensional accuracy and thickness.

Precision stainless steel hardware parts often produce various forms of sharp burrs after cutting and stamping. They adversely affect the subsequent processing, quality, inspection, assembly, and product performance, life and appearance of the workpiece. In order to solve this problem, the magnetic polishing machine processing technology is an effective method for removing burrs and surface smoothing of parts. The magnetic field distribution is used to conduct fine grinding of stainless steel needles, resulting in high-speed flow, turning heads, etc., and rubbing in the inner hole and surface of the workpiece to achieve precise grinding effects such as polishing, cleaning, and removing burrs.

Features:

1. Finished parts of light iron metal, non-ferrous metal, hard plastic, etc., complete the precision grinding work such as burrs, chamfering, polishing, washing, etc.

2. Irregular parts, holes, tubes, dead ends, cracks, etc. can be ground

3. Fast processing speed, simple and safe operation, low cost

4. The finished product is not deformed after processing, and does not affect the accuracy.

use:

1. Remove the rough grinding

2. Removal of oxide film work

3. Polished surface finish

4. Corrosion removal treatment

5. Sintering black trace treatment

6. Polishing and polishing work

The corners of the blunt edge are the common sense and routine in machining. A part, no matter what method (including car, planing, milling, etc.) is processed, all the sharp edges must be processed after completion, which is often referred to as "dark", and of course includes right-angled edges. As for the specific treatment methods, generally, a sickle, a chamfering knife, an abrasive cloth grinding wheel, etc. can be used. Because of the corners and easy to produce burrs, it will cause trouble for handling and assembly. When it is not in the mechanical and hydraulic transmission, the burr will not fall off, it will increase the mechanical wear and blockage of the hydraulic system, and the burr will also scratch the seal and make the system leak oil. Due to the demand for production, the manufactured parts are also mass-produced. It is not only time-consuming and labor-intensive to manually remove the deburring tools, but also the consistency of the products that are difficult for skilled workers. . The cost of human resources has increased and the quality has been greatly reduced.

The mechanical sheet metal deburring machine is the ideal solution for this problem. The high-speed rotation of several passivation (special brush) is installed under each main unit, and the abrasive slides over the edge of the product and all corners pass the universal high-speed friction burr. At the same time, the replacement is performed to make the chamfering and deburring uniform, and the processing is automatically completed while conveying the product through the straight line or the disc.

Applicable industry products:

Stamping sheet metal

2. Laser cutting processing

3. Copper and aluminum, sawing and processing

4.CNC machining

5. CNC punching machine, grinding machine

For some enterprises engaged in small batch cutting and stamping of sheet metal parts, in order to ensure the quality of the products, the surface and corners of these workpieces must be polished and deburred, but deburring has become a problem: if the processing is done, because of the batch Small, some professional processors are not happy, and the quality and delivery time are also difficult to guarantee; to solve it yourself, you need to purchase a set of equipment, the investment is large, and it is not worthwhile. Therefore, the deburring of these workpieces has to be done manually, using a sanding tool. But the effect of deburring is not ideal.

Deburring field Deburring, polishing, chamfering automation, more than a dozen models offer a choice to find a more perfect solution. The passivation deburring machine is specially designed for batch deburring equipment for cutting and stamping parts. It uses several passivation (special brush) under each host to rotate at high speed. The abrasive slides over the edge of the product and all corners pass through the universal high speed. Rubbing burrs. At the same time, the replacement is performed to make the chamfering and deburring uniform, and the processing is automatically completed while conveying the product through the straight line or the disc.

use:

1. Suitable for laser cutting, CNC, ordinary punching, die-casting, wire drawing, metal burrs after grinding, flanging, cutting sharp edges.

2. For irregular parts, all the irregularities in the hole, including the dead angle of the slit, can be uniformly deburred and evenly chamfered.

3. Uniform removal of the same plane burr, any external size hole hole burr and even chamfering, high-end quality that can not be replaced by manual and other equipment

4. Planar and special-shaped sheet metal laser cutting all-round deburring, all-round uniform chamfering

A lot of electromechanical equipment and daily necessities have to use radiators, such as notebooks, car radiators, etc., its importance is also very important, Imagine your notebook has been running for a long time on a hot summer day, if there is no radiator What is the hot temperature? If the temperature is too high, it will not only affect the normal operation but also shorten the service life.

Products such as heat sinks will have burrs in the groove after milling the plane. Now if the manual deburring / manual deburring every time, it is a waste of too much labor and man-hours. The burrs in the product slots such as heat sinks may sometimes cause employees to cry without tears---big burrs are time-consuming and laborious, and small burrs are not easy to remove!

Magnetic deburring machine, clever magnetic field distribution, conducting fine grinding of stainless steel needles, generating high-speed flow, turning heads and other actions, in the workpiece hole, surface friction, polishing, cleaning, removing burrs and other precision grinding effects can be 5-10 minutes During the time, the fins and the corner burrs are quickly processed very well. The main purpose is to achieve deburring and polishing by tumbling the fine polishing needles against the surface and corners of the product.

After the scallops are punched, each burr is subjected to strict deburring, so that the burrs in the stamping process are controlled to a minimum. In foreign countries, there are two consecutive deburrings. In the automatic production line of punching chips, two deburring machines are connected online. The deburring machine has a roller wheel type and a belt type deburring machine. The main features of the latter are: fast rotation speed, up to 10~35m/min, easy and fast replacement of the belt, and can adapt to the punching of various shapes and thicknesses. It is said that the deburring quality of the belt is better than that of the roller. The belt is applied to a high-speed rotating rubber belt with a spiral groove, which prevents the belt from being contaminated. The pressure of the belt is controlled by compressed air, which maintains a constant pressure and automatically stops when the belt is damaged or other faults occur.

Mechanical method

With the help of an industrial robot, a rotating wire brush or a grinding wheel is clamped, and the burred portion is polished by the joint arm movement of the robot to remove the burr. The robot can pick a wire brush or a grinding wheel from the shelf of the tool library to accommodate the need to remove burrs on different parts of the part. However, this method is often unsuitable for use in many applications because the arm joint of the robot lacks sufficient rigidity and precision. And because of the different structure of the parts, some parts can not be deburred by this method, and have to be equipped with other deburring equipment.

Vibration method

This is designed for the deburring of smaller turning parts or diamond parts. The parts are placed in a large container filled with granular ceramic media, the size of which varies according to the type, size and material of the burred parts. The rapid reciprocating vibration of the container causes the parts of the part to move and rub against the ceramic medium to remove burrs, and the surface of the part can be polished. The strength of the vibration can be adjusted to accommodate different sized parts.

Thermal method

The process of deburring by thermal energy is a process of oxidizing into a powder at a high temperature. A thermal deburring machine that seals a burred part in a container filled with high-pressure combustible gas and oxygen. The burrs on the part, whether external, internal or blind, are surrounded by the mixed gas. When the spark plug ignites the mixed gas, it generates a transient high-temperature heat wave. Because the surface area to gas ratio of the burr portion is quite high, the burr is burned, and the burr is continuously oxidized and transformed during the cycle of 15 to 30 seconds. Powder the powder and then clean the workpiece with solvent.

This method is the only way to evenly remove burrs. It removes unwanted material from all parts of the part, even removes burrs from difficult internal grooves and intersecting holes, and afterwards No need to check. Therefore, it is widely used in the deburring process of ferrous and non-ferrous metal parts.

Electrochemical method

The electrochemical (also known as electrolysis) deburring machine removes burrs on the part by electrochemically reacting the metal material from the part into the electrolyte. The tool electrode is connected to the negative pole of the DC power supply, the burred part is connected to the positive pole of the power supply, the electrolyte passing through a certain pressure and flow rate is passed in the middle, and then the DC power source is turned on, so that the metal as the anode gradually dissolves electrochemically, and the removal is achieved. The purpose of burrs (or molding).

Electrolysis effectively removes burrs of any size and is of high quality. In the process, since the tool electrode (cathode) is not worn, its position can be fixed, so the operation is very simple, the productivity is high, and it is suitable for automatic processing; no thermal stress and mechanical stress are generated in the process, and the workpiece is not deformed; Suitable material ranges and hardness ranges are large.