A few kinds go in first burr craft introduces

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Burr -- the person that has struggled in metallic industry is opposite certainly it is not unfamiliar, in metal treatment process, nowhere is absent it, no matter the device that you use how advanced nicety, it can accompany a product be born together. Alleged burr, the plasticity that basically is material is out of shape and be being machined by treatment material a kind of when the brim generates redundant scrap, extend a gender especially or the capable person with nicer tenacity is qualitative, special and easy occurrence burr, and just burr problem is metallic treatment industry so far one of engineers' inextricability difficult problem. The burr type in metallic treatment process basically has flash burr, pointed horn burr, splatter a kind of when wait not to accord with products plan to ask outstanding redundant metal is leftover part. To this problem, still can be in without a kind of effective method so far its put an end to manufacturing process lieutenant general, ask to assure the design of the product so, the purify respect that engineers after only makes great efforts, the method of the purify burr that differs in the light of different product so far and equipment had had a lot of to plant. Usually, can you be the methodological cent of purify burr 4 kinds of big: ? < ) of aim? hard contact: Belong to this kind cutting, grinding, file and drawknife treatment wait. Average level (soft contact) : Belong to this kind arenaceous belt is ground, grinding of abrade, stretch emery wheel and polish. Exact form (flexible contact) : Belong to this kind have rinse treatment, electrochemistry treatment, electroanalysis grinding and scroll treatment. Exceed exact level (accurate contact) : Belong to this kind have grind bead to shed burr, magnetic force to grind abrasion burr, electroanalysis go burr, heat energy goes puissant ultrasonic goes to burr and close radium burr, this kind goes burr method can obtain enough spare parts to machine precision. Go in the choice when us when burr method, want to consider the factor of many sided, for example the size of appearance of hardware data character, structure, dimension and exact extent, should note common difference of exterior surface roughness, dimension especially, be out of shape and the change such as leftover stress. Alleged electroanalysis go burr is a kind of chemistry goes burr method, it but purify machining, grinding treatment reachs the burr after punch is machined, make metallic spare parts pointed the edge pours a circle or pour arris. Use electroanalysis the method of a kind of electrochemical machining of burr of spare parts of action purify metal, english abbreviation ECD. tool cathode (use brass commonly) fixed set the position that pricks in workpiece hairiness around, the clearance with both certain apart (it is commonly 0.

3 -- 1 millimeter) . The electric part of tool cathode aims burr arris edge, other surface uses insulation layer to enclothe, make electroanalysis action is centered in burr part. Cathode of the tool when treatment receives negative pole of direct current source, workpiece receives anode of direct current source. Pressure is 0.

1 -- 0.

The low-pressure electrolyte of 3 million handkerchief (use sodium nitrate or aqueous solution of chloric acid natrium commonly) had shed workpiece and cathode between. Should put through after direct current source, burr produces positive pole to dissolve and by purify, be taken away by electrolyte. It is certain that electrolyte has caustic, work goes answering to be mixed through cleaning after burr antirust processing. Electroanalysis go burr applies to purify place across aperture or appearance concealment in the spare parts the burr of complex part, manufacturing efficiency is tall, go burr time needs a few seconds to come only commonly a few seconds. This kind of method is commonly used wait at body of gear, spline, connecting rod, a powerful person and orifice of crankshaft oil path go burr, and pointed horn pours a circle to wait. Defect is spare parts burr around also be electroanalysised action, the surface can lose original luster, affect dimension precision even. Of course besides electroanalysis purify burr, still have below method of burr of purify of a few kinds of special type: One, grind bead to shed burr abrasive to shed processing technique (AFM) is abroad an act the role ofing of essence of life that development of 70 time end rises goes burr new technology, this technology is special the burr that agrees with to just enter finish machining phase, but wait to all should not be to the metal pattern that small and long aperture and bottom are illogical treatment. 2, magnetic force grinds abrasion burr this law the Eastern European country such as the Russia before 60 time traceable, Bulgaria, car of day of 80 time metaphase is mixed to its mechanism application makes mill development consider. In the magnetic field that two magnetic pole form putting work when magnetic force is abrade, magnetic abrasive is put in the clearance of workpiece and magnetic pole, abrasive leaves way of edge lines of force in the action of magnetic field force orderly arrange, form a softness and the magnetism that has certain tigidity is abrade brush, rotate in magnetic field when workpiece when the well makes axial vibration, workpiece moves relatively with abrasive happening, abrasive is brushed have magnetic force of abrade treatment; to workpiece surface abrade law can efficient, fast undertake to the spare parts abrade and go burr, apply to the spare parts of a variety of a variety of all sorts of material, dimension, structures, it is one kind invests little, efficiency tall, utility the finish machining method with wide, good quality. At present abroad already can turn to coming back surface of body inside and outside, flat kind teeth of a cogwheel of spare parts, gear, complex model the face undertake abrade and go burr, the oxidation skin on purify wire wire, clear printed circuit board etc. 3, heat energy goes burr heating power goes burr (the high temperature that TED) is the generation after use oxyhydrogen gas or gas mixing to deflagrate when oxygen and natural gas are formed burr burn-up. Be burn oxygen and oxygen or day gas and oxygen to open an airtight vessel inside, via sparkplug ignition, make mixture gas deflagrates inside instantaneous give off much heat energy and purify burr. But workpiece deflagrates through lighting after burning, its oxidize pulverous can adherent workpiece apparently, must try to clean or pickling. 4, puissant ultrasonic goes to close radium puissant ultrasonic goes to burr close radium burr technology is to begin a popular kind to go in last few years burr method, mere accessary cleaning efficiency is common ultrasonic cleaning machine 10 -- 20 times, hole is even inside cistern densely covered, make ultrasonic need not clear lotion of have the aid of can be in 5 -- finish at the same time inside 15 minutes. Metallic treatment arranged 10 kinds for everybody the commonnest go burr means: 1, go artificially burr also is the means that average company uses generally this, use file, sand paper, wheelhead to wait as auxiliary tool. File somebody is versed in file and pneumatic fault are moved. Brief judge: Labour cost is more expensive, efficiency is not very tall, and very difficult to complex alternate aperture purify. To worker technology the demand is not very high, applicable burr is small, the product with product simple structure. 2, die goes burr uses the die that make to cooperate punching machine to undertake going burr. Brief judge: The die with certain need (thick model + die of essence of life) the cost that make, the likelihood still needs to make plastic model. Fit the product with cent simpler face, efficiency and go burr effect compares artificial beautiful. 3, grind abrasion burr goes this kind burr includes oscillatory, spurt the means such as arenaceous, platen, at present the enterprise is used more. Brief judge: Existence purify is not very clean problem, the likelihood needs sequel to handle leftover burr to perhaps cooperate other way to go artificially burr. Fit the small product with bigger batch. 4, refrigerant go burr is used drop in temperature make burr rapid fragile change, next burr of eject bullet purify. Brief judge: Equipment price suits burr wall in 2289;   probably thick lesser and the product with lesser also product. 5, heat explodes go burr also calls heat energy to go burr, explosion goes burr. Pass a few Yi Ran gas, in connecting an equipment furnace, carry the action of a few medium and condition next, allow aeriform instant explosion, the energy that uses explosive generation will dissolve purify burr. Brief judge: Equipment is costly () of about a hundred 10 thousand prices, operation technology demand is high, efficiency is low, side-effect (rusty, be out of shape) ;   basically uses the component field in a few tall nicety, wait for accurate component like car spaceflight. 6, engraving tool goes burr brief judge: Equipment price is not very expensive (tens of thousands of) , apply to dimensional structure simple, be needed to go burr position has the law simply. 7, chemistry goes burr uses electrochemistry reaction principle, the part that makes to metallic stuff automatically, finish selectively go burr works. Brief judge: Apply to be hard to the in-house burr of purify, suit the product fine short-haired pelt such as body of pump housing, a powerful person to prick (ply is less than 7) . 8, electroanalysis go burr is used electroanalysis the method of a kind of electrochemical machining of burr of spare parts of action purify metal. Brief judge: It is certain that electrolyte has caustic, of spare parts burr around also be electroanalysised action, the surface can lose original luster, affect dimension precision even, work goes answering to be mixed through cleaning after burr antirust processing. Electroanalysis go burr applies to purify place across aperture or appearance concealment in the spare parts the burr of complex part, manufacturing efficiency is tall, go burr time needs a few seconds to come only commonly a few seconds. Apply to body of gear, connecting rod, a powerful person and orifice of crankshaft oil path to wait go burr, and pointed horn pours a circle to wait. 9, high-pressured water jet goes burr is agency with water, the instantaneous wallop that uses it comes the burr of the generation after purify is machined and flash, can achieve the goal that clean at the same time. Brief judge: Equipment is costly, the heart position that basically is used at the car and the hydraulic pressure with mechanical engineering control a system. 10, ultrasonic goes burr of purify of high pressure of instant of burr ultrasonic generation. Brief judge: Basically be aimed at a few microcosmic burr, if if burr needs to come with microscope,observing commonly, with respect to the methodological purify that can try to use ultrasonic. CNC Milling