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Analysis of spring machinery parts deburring method and significance
Published：2014.10.30 News Sources：kaichuang spring machinery Views：
With the development of modern industrialization and the exaltation of automation degree, the requirements of mechanical parts is more and more high accuracy. Such as burr residual mechanical parts processing process, some are in the process of cutting due to plastic deformation caused by some flash, castings and forgings, and some is in the process of extrusion welding residue etc.. If you do not remove burr phenomenon, cause adverse effect on many aspects of will. For example: precision parts of rockets, missiles and aircraft trip, such as not to remove the burr, the consequences will not tower envisaged.
1.electrochemical deburring. Electrolytic deburring is the use of electric energy and chemical energy through the method of dissolving anode to remove the burr. For example the positive part and a DC power supply is connected to the anode, the cathode forming tool and a DC power supply is connected to the cathode, to maintain a certain distance between the poles, so that the electrolytic solution circulating. When the anode and cathode immersed in solution and pass into the DC, the surface of the anode electrochemical reaction occurs, parts of the surface is metallic elements and electrolyte dissolved form viscous liquid adsorption in the concave parts of the surface, corrosion has high resistance and smaller burr; because of outstanding in parts of the surface, the temperature under the influence of the liquid film, it is difficult to rapid formation, after electrify electrolyte is highly concentrated in burr burr portion and a cathode recent will be the fastest speed dissolved, until completely dissolved edge burr, gradually formed the fillet, namely, achieve the purpose of deburring. This method is suitable for non-ferrous and ferrous metal parts, especially suitable for the complex shape parts and machinery, manual methods are difficult to remove the inner hole, cross hole and the inner surface of the burr, burr removal and can be especially hard parts such as molybdenum, nickel, titanium and quenching parts.
2.Chemical deburring. Chemical deburring placed metal parts cleaning clean to the chemical solution (50 DEG C), the existence of solution to form parts of the surface of metal ion. These ions adsorbed on the surface of workpiece, producing a layer of resistance, conductivity small mucous membrane through the chemical reaction, the protection of the workpiece surface is not corrosion; because the burr protrudes out of the surface, by chemical action will remove the burr. According to the different burr workpiece materials, chemical solution used is also different, with hydrochloric acid, phosphoric acid, sulfuric acid, hydrochloric acid two base aniline and water and its main components, proportioning. Chemical to metal burr and suitable for small, can remove the tiny burr thickness less than 0.07 mm.
3.high temperature deburring. High temperature deburring is the first need to burr parts are placed in a sealed chamber fastening, and then pass into the hydrogen oxygen mixed gas with certain pressure, the spark plug ignition, mixed gas instantaneous explosion, release a lot of heat, the instantaneous temperature up to 3300 DEG C; the explosion time is very short, so that part of the burr is burned the other parts, too late to change. Because of the explosion, high-speed flow of high pressure gas, burr parts of inner hole and cross hole, groove and deep hole can be burned etc.. This method is applicable to any form of the metal, plastic and rubber parts, especially complex shape and hand it is difficult to remove the burr parts.
4.roll abrasion burr. Roll abrasion burr is according to a certain proportion of the workpiece and abrasive into closed roller, roller rotation in the process, grinding and abrasive parts, parts and components, to achieve the purpose of removing burr. Roll abrasion burr equipment has special deburring machine and centrifugal roll polishing machine, and the abrasive is quartz sand, sawdust, alumina, ceramic, dolomite, silicon carbide and metal ring. Choose according to the parts of the material, shape and size and location and size of burr. The use of this method for deburring, deformation of parts is small, simple equipment, easy operation and good economic performance, but it is difficult to remove large burr.
5.spray ice deburring. Spray ice deburring is the use of a ice crystals as impact medium to process in addition to dirt. In developed countries, this method commonly used for industrial cleaning, because it does not use any cleaning agents, solvents or abrasive. The process is particularly effective for soft materials, such as aluminum and brass; but also on the iron and steel materials can be determined according to burr, burr and burr size attached on the parts strength; also suitable for casting parts, such as engine cylinder body, cylinder cover and transmission housing, intake manifold, one-time remove processing burr and flash.
Spring mechanical parts why burr? In the mechanical transmission, because the CNC spring machine operation generates vibration phenomenon, can make partial burrs off, easy to cause the system to the death card or damage of parts; mechanical movement and sometimes even burr phenomenon will directly impede the components, causing error of precision products, especially in the piston or slide valve medium particularly obvious. Such as burr parts of computer spring machine produced in the cutting process, if the positioning cushion in the spare parts on the surface, resulting in a point contact, which greatly reduces the processing accuracy; in the assembly due to burr, causing the assembly failed; when the bear large loads, burr will affect the fatigue strength of parts and paint and other protection layer binding force, reducing component life; in the loading and unloading workpiece due to burr, workers will cause hand scratch etc. phenomenon, at the same time will also affect the appearance of parts. The content source to Kaichuang spring machine: http://www.kcmcnc.com/en/.
1.electrochemical deburring. Electrolytic deburring is the use of electric energy and chemical energy through the method of dissolving anode to remove the burr. For example the positive part and a DC power supply is connected to the anode, the cathode forming tool and a DC power supply is connected to the cathode, to maintain a certain distance between the poles, so that the electrolytic solution circulating. When the anode and cathode immersed in solution and pass into the DC, the surface of the anode electrochemical reaction occurs, parts of the surface is metallic elements and electrolyte dissolved form viscous liquid adsorption in the concave parts of the surface, corrosion has high resistance and smaller burr; because of outstanding in parts of the surface, the temperature under the influence of the liquid film, it is difficult to rapid formation, after electrify electrolyte is highly concentrated in burr burr portion and a cathode recent will be the fastest speed dissolved, until completely dissolved edge burr, gradually formed the fillet, namely, achieve the purpose of deburring. This method is suitable for non-ferrous and ferrous metal parts, especially suitable for the complex shape parts and machinery, manual methods are difficult to remove the inner hole, cross hole and the inner surface of the burr, burr removal and can be especially hard parts such as molybdenum, nickel, titanium and quenching parts.
2.Chemical deburring. Chemical deburring placed metal parts cleaning clean to the chemical solution (50 DEG C), the existence of solution to form parts of the surface of metal ion. These ions adsorbed on the surface of workpiece, producing a layer of resistance, conductivity small mucous membrane through the chemical reaction, the protection of the workpiece surface is not corrosion; because the burr protrudes out of the surface, by chemical action will remove the burr. According to the different burr workpiece materials, chemical solution used is also different, with hydrochloric acid, phosphoric acid, sulfuric acid, hydrochloric acid two base aniline and water and its main components, proportioning. Chemical to metal burr and suitable for small, can remove the tiny burr thickness less than 0.07 mm.
3.high temperature deburring. High temperature deburring is the first need to burr parts are placed in a sealed chamber fastening, and then pass into the hydrogen oxygen mixed gas with certain pressure, the spark plug ignition, mixed gas instantaneous explosion, release a lot of heat, the instantaneous temperature up to 3300 DEG C; the explosion time is very short, so that part of the burr is burned the other parts, too late to change. Because of the explosion, high-speed flow of high pressure gas, burr parts of inner hole and cross hole, groove and deep hole can be burned etc.. This method is applicable to any form of the metal, plastic and rubber parts, especially complex shape and hand it is difficult to remove the burr parts.
4.roll abrasion burr. Roll abrasion burr is according to a certain proportion of the workpiece and abrasive into closed roller, roller rotation in the process, grinding and abrasive parts, parts and components, to achieve the purpose of removing burr. Roll abrasion burr equipment has special deburring machine and centrifugal roll polishing machine, and the abrasive is quartz sand, sawdust, alumina, ceramic, dolomite, silicon carbide and metal ring. Choose according to the parts of the material, shape and size and location and size of burr. The use of this method for deburring, deformation of parts is small, simple equipment, easy operation and good economic performance, but it is difficult to remove large burr.
5.spray ice deburring. Spray ice deburring is the use of a ice crystals as impact medium to process in addition to dirt. In developed countries, this method commonly used for industrial cleaning, because it does not use any cleaning agents, solvents or abrasive. The process is particularly effective for soft materials, such as aluminum and brass; but also on the iron and steel materials can be determined according to burr, burr and burr size attached on the parts strength; also suitable for casting parts, such as engine cylinder body, cylinder cover and transmission housing, intake manifold, one-time remove processing burr and flash.
Spring mechanical parts why burr? In the mechanical transmission, because the CNC spring machine operation generates vibration phenomenon, can make partial burrs off, easy to cause the system to the death card or damage of parts; mechanical movement and sometimes even burr phenomenon will directly impede the components, causing error of precision products, especially in the piston or slide valve medium particularly obvious. Such as burr parts of computer spring machine produced in the cutting process, if the positioning cushion in the spare parts on the surface, resulting in a point contact, which greatly reduces the processing accuracy; in the assembly due to burr, causing the assembly failed; when the bear large loads, burr will affect the fatigue strength of parts and paint and other protection layer binding force, reducing component life; in the loading and unloading workpiece due to burr, workers will cause hand scratch etc. phenomenon, at the same time will also affect the appearance of parts. The content source to Kaichuang spring machine: http://www.kcmcnc.com/en/.
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