How to deburr plastics in machining center
2. Vibration grinding and shot peening can be carried out in this way if the requirements are not high
3. For very small burr, it can be removed by ultrasonic cleaning
4. Once visited a project, through instantaneous discharge, the tiny burr was removed by combustion. The specific principle is not very clear. It is used on an aluminum alloy part of an automobile engine.
Burr is a small thing, but it directly affects the quality of procts. So in recent years, with the instry's attention to deburring, deburring methods are emerging in endlessly. There are several kinds of trimming / deburring commonly used now:
manual deburring
traditional; The trimming knife graally replaces these traditional methods, does not need technical treatment, saves cost and environmental protection
chemical deburring
based on the principle of electrochemical reaction, deburring can be automatically and selectively performed on the parts made of metal materials. It can be widely used in deburring of pump body, valve body, connecting rod, plunger needle valve couple and other parts of different metal materials in pneumatic, hydraulic, engineering machinery, nozzle oil pump, automobile, engine and other instries. It is suitable for difficult to remove internal burr, parts after heat treatment and finish machining.
electrochemical deburring
electrochemical deburring is a kind of electrochemical machining method, which is called ECD for short. The cathode of the tool (usually made of brass) is fixed near the burred part of the workpiece, with a certain gap (generally 0.3-1 mm). The conctive part of the cathode of the tool is aligned with the edge of the burr, and other surfaces are covered with insulating layer, so that the electrolysis is concentrated on the burr. During machining, 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. Low pressure electrolyte (usually sodium nitrate or sodium chlorate solution) with pressure of 0.1-0.3 MPa flows between the workpiece and cathode. When the DC power is turned on, the burr will be removed by anodic dissolution and be taken away by the electrolyte. The electrolyte is corrosive to some extent, and the workpiece should be cleaned and antirust after deburring. Electrolytic deburring is suitable for deburring the cross holes in the concealed parts or the parts with complex shape. It has high proction efficiency, and the deburring time generally only takes a few seconds to dozens of seconds. This method is often used for deburring of gear, spline, connecting rod, valve body and crankshaft oil passage orifice, and sharp corner rounding. The disadvantage is that the burr of the part is also affected by electrolysis, and the surface will lose its original luster, and even affect the dimensional accuracy
ultrasonic deburring
when the ultrasonic energy generated by the ultrasonic wave acts on the liquid in which the vibration is sparse, It will tear into very small holes (that is, the inside is vacuum). When these holes break, they will proce instantaneous pressure of hundreds of atmospheres, which is called cavitation phenomenon. Ultrasonic deburring is the use of "cavitation phenomenon" generated by hundreds of atmospheres of instantaneous impact force to remove the burr attached to the parts. Ultrasonic deburring is not suitable for all kinds of burr, mainly for some micro burr. Generally, if the burr needs to be observed by microscope, we can try to remove it by ultrasonic method. For the burr visible to the naked eye, it mainly depends on the bonding strength. For the burr with weak bonding strength, ultrasonic can be used. Generally, if the burr can only be treated with cutting tool, ultrasonic method is not at all. Advantages and disadvantages of ultrasonic deburring
high pressure water jet deburring
as the name suggests, water is used as the medium to remove the burr and flash after processing by using its instantaneous impact force, and the purpose of cleaning can be achieved at the same time. After many tests, the suitable pressure is found to be 30mpa-50mpa. If the pressure is insufficient, the effect of deburring can not be achieved. If the pressure is too high, the deburring can be removed, but there is a risk of damage to the workpiece. Generally, the liquid pressure of hydraulic parts in use is within 20MPa, and the burr resie that can not be removed with 50MPa pressure is very small under the working pressure of several MPa. It can also be considered that the burr root resie is a part of the workpiece. Now there are more and more manufacturers of high-pressure water deburring equipment, which can be simply divided into two categories: Mobile workpiece and mobile nozzle. It is suitable for deburring and cleaning of simple valve body because of its low cost. Its disadvantage is that the matching degree of nozzle and valve body is not ideal, and the deburring effect of cross hole and inclined hole in valve body is not good; The movable nozzle can effectively adjust the distance between the nozzle and the burr procing part of the valve body through CNC control, and effectively correspond to the burr of the cross hole, inclined hole and blind hole in the valve body. However, e to the high cost of this equipment, so far only the heart part of the automobile and the hydraulic pressure control system of engineering machinery can generally enjoy this kind of treatment
thermal explosion deburring
, also known as electro thermal deburring, thermal deburring is the most suitable deburring technology for small workpieces in the world machinery manufacturing instry. At present, only two domestic enterprises can proce this equipment. It uses hydrogen and oxygen to mix in the airtight working room used to treat the workpiece, ignites instantly and reacts with the surface burr of the workpiece in a very short time to remove the burr. Thermal deburring is a kind of special machining technology, which has the characteristics of high efficiency, strong universality, good accessibility, uniform and thorough deburring, smooth workpiece surface, and not limited by workpiece material, shape and burr position. It is especially suitable for deburring the workpiece with complex cavity, intersecting hole system, deep hole, blind hole, threaded hole, etc. It can be used for deburring of non-metallic materials such as ferrous metal, non-ferrous metal and thermoplastic, and deburring of metal die castings and plastic die castings. Because of its high processing efficiency and low direct cost for proction, it is especially suitable for large-scale continuous proction environment. It is an ideal and efficient processing equipment for large-scale instrial proction
The thickness of flash (or burr) of rubber, plastic procts, zinc magnesium aluminum alloy and other procts is much thinner than that of procts, so the embrittlement speed of flash (or burr) is faster than that of procts, The frozen deburring (trimming) machine can remove the fringes (or burrs) which are in embrittlement by shooting projectiles to hit the procts. Freezing deburring (trimming) machine is a kind of machine which uses ultra-low temperature of liquid nitrogen to make the flash of rubber, plastic procts and zinc magnesium aluminum alloy embrittle rapidly. In this state, through the high-speed jet of frozen particles impacting the burr (or Flash) of procts, the burr (or Flash) of procts can be removed with high quality and high efficiency, It is a special deburring (trimming) equipment that can keep all the physical properties of the procts unchanged. It can greatly improve the precision of trimming (deburring) and has a high degree of intensification. At present, this kind of equipment has become an indispensable equipment for trimming and deburring in precision rubber and plastic procts and die casting enterprises
magnetic deburring machine
the magnetic deburring machine uses its unique magnetic field distribution to proce strong and stable magnetic inction effect, so that the magnetic steel needle (imported raw materials. Semi permanent) and the workpiece can be fully ground in all directions and angles, so as to achieve the functions of fast rust removal, dead angle removal, burr removal, oxidation film removal and sintering trace removal. Especially for the complex shape, multi hole crevice, internal and external thread and other workpieces, it can show its magical function. Moreover, it does not damage the surface of the workpieces, and does not affect the accuracy of the workpieces. Let the workpiece become smooth and clean instantly, take on a new look. It is suitable for grinding, polishing and deburring of gold, silver, copper, aluminum, zinc, magnesium, iron, stainless steel and non-metallic parts such as hard plastic
deburring manipulator is a typical mechatronics device, which integrates the latest research results of many disciplines, such as machinery and precision machinery, microelectronics and computer, automatic control and drive, sensor and information processing, artificial intelligence, etc, With the rapid development of deburring manipulator technology, there are a variety of deburring manipulator procts. The practical application of deburring manipulator not only solves many practical problems which are difficult to be solved by manpower alone, but also promotes the process of instrial automation
The typical parts of deburring manipulator are: aluminum hub, inverter housing, synchronizer housing, synchronizer gear hub, bearing cover, cylinder body, valve body, valve cover, output shaft, engine gear, etctraditional; The trimming knife graally replaces these traditional methods, does not need technical treatment, saves cost and environmental protection
2. Chemical deburring
using the principle of electrochemical reaction, deburring can be automatically and selectively performed on the parts made of metal materials. It can be widely used in deburring of pump body, valve body, connecting rod, plunger needle valve couple and other parts of different metal materials in pneumatic, hydraulic, engineering machinery, nozzle oil pump, automobile, engine and other instries. It is suitable for difficult to remove internal burr, parts after heat treatment and finish machining.
3. Electrolytic deburring
an electrochemical machining method for deburring metal parts by electrolysis, ECD for short. The cathode of the tool (usually made of brass) is fixed near the burred part of the workpiece, with a certain gap (generally 0.3-1 mm). The conctive part of the cathode of the tool is aligned with the edge of the burr, and other surfaces are covered with insulating layer, so that the electrolysis is concentrated on the burr. During machining, 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. Low pressure electrolyte (usually sodium nitrate or sodium chlorate solution) with pressure of 0.1-0.3 MPa flows between the workpiece and cathode. When the DC power is turned on, the burr will be removed by anodic dissolution and be taken away by the electrolyte. The electrolyte is corrosive to some extent, and the workpiece should be cleaned and antirust after deburring. Electrolytic deburring is suitable for deburring the cross holes in the concealed parts or the parts with complex shape. It has high proction efficiency, and the deburring time generally only takes a few seconds to dozens of seconds. This method is often used for deburring of gear, spline, connecting rod, valve body and crankshaft oil passage orifice, and sharp corner rounding. The disadvantage is that the surface of the part near the burr will lose its original luster e to electrolysis, and even affect the dimensional accuracy
4. Ultrasonic deburring
when the ultrasonic energy generated by ultrasonic acts on the liquid with sparse vibration in the liquid, It will tear into very small holes (that is, the inside is vacuum). When these holes break, they will proce instantaneous pressure of hundreds of atmospheres, which is called cavitation phenomenon. Ultrasonic deburring is the use of "cavitation phenomenon" generated by hundreds of atmospheres of instantaneous impact force to remove the burr attached to the parts. Ultrasonic deburring is not suitable for all kinds of burr, mainly for some micro burr. Generally, if the burr needs to be observed by microscope, we can try to remove it by ultrasonic method. For the burr visible to the naked eye, it mainly depends on the bonding strength. For the burr with weak bonding strength, ultrasonic can be used. Generally, if the burr can only be treated with cutting tool, ultrasonic method is not at all. Advantages and disadvantages of ultrasonic deburring
5. High pressure water jet deburring
as the name suggests, water is used as the medium to remove the burr and flash proced after processing by using its instantaneous impact force, and the purpose of cleaning can be achieved at the same time. After many tests, the suitable pressure is found to be 30mpa-50mpa. If the pressure is insufficient, the effect of deburring can not be achieved. If the pressure is too high, the deburring can be removed, but there is a risk of damage to the workpiece. Generally, the liquid pressure of hydraulic parts in use is within 20MPa, and the burr resie that can not be removed with 50MPa pressure is very small under the working pressure of several MPa. It can also be considered that the burr root resie is a part of the workpiece. Now there are more and more manufacturers of high-pressure water deburring equipment, which can be simply divided into two categories: Mobile workpiece and mobile nozzle. It is suitable for deburring and cleaning of simple valve body because of its low cost. Its disadvantage is that the matching degree of nozzle and valve body is not ideal, and the deburring effect of cross hole and inclined hole in valve body is not good; The movable nozzle can effectively adjust the distance between the nozzle and the burr procing part of the valve body through CNC control, and effectively correspond to the burr of the cross hole, inclined hole and blind hole in the valve body. However, e to the high cost of this equipment, so far only the heart part of the automobile and the hydraulic pressure control system of engineering machinery can generally enjoy this kind of treatment< 6. Thermal explosion deburring, also known as electro thermal deburring, thermal deburring is the most suitable deburring technology for small workpieces in the world. At present, only two domestic enterprises can proce this equipment. It uses hydrogen and oxygen to mix in the airtight working room used to treat the workpiece, ignites instantly and reacts with the surface burr of the workpiece in a very short time to remove the burr. Thermal deburring is a kind of special machining technology, which has the characteristics of high efficiency, strong universality, good accessibility, uniform and thorough deburring, smooth workpiece surface, and not limited by workpiece material, shape and burr position. It is especially suitable for deburring the workpiece with complex cavity, intersecting hole system, deep hole, blind hole, threaded hole, etc. It can be used for deburring of non-metallic materials such as ferrous metal, non-ferrous metal and thermoplastic, and deburring of metal die castings and plastic die castings. Because of its high processing efficiency and low direct cost for proction, it is especially suitable for large-scale continuous proction environment. It is an ideal and efficient processing equipment for large-scale instrial proction< The thickness of flash (or burr) of rubber, plastic procts, zinc magnesium aluminum alloy and other procts is much thinner than that of procts, so the embrittlement speed of flash (or burr) is faster than that of procts, The frozen deburring (trimming) machine can remove the fringes (or burrs) which are in embrittlement by shooting projectiles to hit the procts. Freezing deburring (trimming) machine is a kind of machine which uses ultra-low temperature of liquid nitrogen to make the flash of rubber, plastic procts and zinc magnesium aluminum alloy embrittle rapidly. In this state, through the high-speed jet of frozen particles impacting the burr (or Flash) of procts, the burr (or Flash) of procts can be removed with high quality and high efficiency, It is a special deburring (trimming) equipment that can keep all the physical properties of the procts unchanged. It can greatly improve the precision of trimming (deburring) and has a high degree of intensification. At present, this kind of equipment has become an indispensable equipment for trimming and deburring in precision rubber and plastic procts and die casting enterprises< Magnetic deburring machine uses its unique magnetic field distribution to proce strong and stable magnetic inction effect, so that the magnetic steel needle (imported raw materials. Semi permanent) and the workpiece can be fully ground in all directions and angles, so as to achieve the effects of rapid rust removal, dead angle removal, burr removal, oxidation film removal and sintering trace removal. Especially for the complex shape, multi hole crevice, internal and external thread and other workpieces, it can show its magical function. Moreover, it does not damage the surface of the workpieces, and does not affect the accuracy of the workpieces. Let the workpiece become smooth and clean instantly, take on a new look. It is suitable for grinding, polishing and deburring of gold, silver, copper, aluminum, zinc, magnesium, iron, stainless steel and non-metallic parts such as hard plastics.
precision small special-shaped parts and irregular parts: deburring (rough edge, batch edge), polishing, cleaning, chamfering, surface hardness enhancement and other grinding are completed at the same time
minimum size of grinding material ф 0.2mm * 3mm
the irregular parts of metal parts, such as holes, pipes, crevices, dead angles, right angles and screw teeth, are precisely ground
the parts do not collide with each other. After grinding, the proct will not deform, affect the accuracy and damage the surface
the machine is stable and efficient
the grinding speed is fast, the average grinding time is about 3 minutes to 20 minutes, the replacement work is fast, and it can be carried out in the running of the machine
the cost is low, the magnetic needle is semi permanent grinding material, the consumption is very low, and the only consumable is grinding fluid
the fuselage is waterproof and moisture-proof, easy and safe to operate, completely free of technology, and can be operated by one person and multiple machines
1. Precision stamping parts
2. Stainless steel parts, screws<
3.
magnesium aluminum die casting parts
4.
. Zinc aluminum die casting parts
5. Precision spring, shrapnel parts
6. Electronic, computer, communication parts
7. Walking, cutting, CNC automatic lathe parts
8. Aerospace, medical parts
suitable for grinding and polishing of metal parts such as gold, silver, copper, aluminum, zinc, magnesium, iron, stainless steel and non-metal parts such as hard plastic. Such as: gold and silver jewelry, fashion accessories, electronic procts metal parts, precision bolts, complex shape metal parts, stationery accessories, instrument accessories