New-style boring cutter improves the treatment quality of boring effectively

0 ～ + 1.

Adjust inside the journey limits of 5mm 1mm, and U axis but deviate center shift is as high as ± 25mm, boring precision can amount to ± 10mm. Although the cost of system of this kind of automation is higher, but its investment can pay off very quickly, it is especially in process of big batch production. It is for instance in auto industry, head of MO42 boring cutter can is opposite according to appearance measured value the every time cutting of connecting rod undertakes self-adjusting. Again for instance, system of boring of an U axis is when boring, can make the process capability in a sense of a machining center resembles lathe in that way, can cutting concave side and have part, increased axis of a treatment effectively. In the meantime, a machining center is OK the part that boring plays to be placed in chuck jacket hard in high speed circumstance. Because rotate right now, is boring cutter only, and workpiece does not rotate, because this machining center can use this kind of cutting tool undertake machining production inside very short time, the surface that asks in order to reach place is bright and clean degree. What company of Makino of intelligent cutting tool uses is cutting tool of Smart series intelligence. The method that Makino company uses is not to use electric machinery to have drive, use cutting fluid to make its pass cutting tool however, before shedding classics cutting to the area lubricates and cool, force cutting fluid to have another effect, that is the help keeps clear of cut bits. One kind calls cooling fluid adjustable of boring lever or CABB double the boring cutter that sets bit to design a form, include an in-house nylon gasbag among them. As the addition of pressure, gasbag expands subsequently, force contain two bit that set bit tool carrier to go up outward dilate, because this makes,the diameter of cutting tool expands. However, to get used to the requirement of gasbag, the confine diameter that boring cutter place needs should be 51mm at least. Cover to make this one orgnaization can shrink go up in boring cutter, its diameter should small to 25.

4mm, for this, design team developed a kind " simple and easy and sealed " device. Makino company is set in two steel of a with filling added between bit piece. This one center it is fixed, as the addition of pressure, the liquid inside will drive bit to depart outwards. Although Makino company design is mixed,produced precision to achieve 0.

The boring lever of 51mm (1) seeing a picture, but the precision of major CABB boring cutter that its design can be achieved however 0.

25mm left and right sides. Because once exceed this greatly,be worth when the precision of cutting tool,its reason is when, to major work, precision begins excessive drop. Before setting bit for the most part to change in need, its wear away to have 0 only.

127 Mm or fewer. Accordingly, make cutting tool expands to superabundantly still the 2nd, expand to the 3rd to use even. Graph the Eaton Saginaw factory of 1 Ford company is used those who Makino company is offerred is water-cooled boring lever, be opposite Duratec 2.

5L engine cylinder body has precision work the manufacturing time that this one function can make its reduce a lot of disabling, adjust with what at be opposite deflection measures for instance, change cutting tool and exit cutting tool through boring hole. Such, can machine in feed process, enlarge space -- be in commonly the each bottom that bore hole -- undertake machining in the process that retreat a knife next. The pressure reading that the software of machine tool of CNC numerical control can obtain according to main shaft the reverse side undertakes self-adjusting. To achieve very tall precision, can use barometer to measure bore diameter, provide necessary feedback information to closed-loop control system. Makino company made a kind can make set bit radial in cutting process inside, outside boring cutter of mobile another kind of hydraulic pressure, but boring shows elliptic aperture slightly, 51mm of its diameter ≥ . Because the cutting fluid pressure of machine tool of CNC numerical control is alterable, its set the foliaceous flat spring at the back of bit to be able to make set bit be driven outwards already outspread, also can be in flabby hind it inward and taut. Its the mobile space with every the largest side is 0.

127mm. In engine production process, this one lesser shift measures enough to make bore diameter figuration, correct its cylinder to spend a question. Boring cutter of type of module of boring cutter of module type combination is boring cutter cent is namely: Fundamental handle (Basic Holder) , lengthen implement (Extension) , reduce way implement (lever of Reduction) , boring) , boring head (Boring Head) , razor blade (Insert Holder) , razor blade (Insert) , (annulus pouring wine cup) wait for many parts, next the treatment content with specific basis (boring of thick boring, essence of life; The diameter of aperture, deepness, appearance; Workpiece material) have free combination. Such not only the amount that reduced knife handle greatly, reduced cost, OK also and rapid correspondence all sorts of treatment requirements, prolong the life of cutting tool whole. Module type boring cutter most appear in European market first, big clear of the Japan about 20 years ago and machine of essence of life company limited (BIG) and Swiss KAISER company undertake the technology cooperates, boring cutter of BIG-KAISER module type appears in Japanese market first, replaced the position of boring cutter of type of an organic whole gradually. The manufacturer that the another element that contemporary boring cutter can provide high accuracy and bigger flexibility is boring cutter of module type combination also resembles other manufacturer in that way, had invested better production to machine craft, so that fill minute of process capability that develops contemporary machine tool. Accordingly, present module type combines boring cutter to have taller precision. The boring that occupies company of Ingersoll cutting tool machines introduction of product line manager, 10 years ago, the assembly of the spare parts repeats precision to achieve 0.

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0178mm can be accepted. But present circumstance no longer such. He points out, the scope of tolerancepublic errand size with the common cutting tool of module type combination of company of Ingersoll cutting tool sees graph 2) for 2 ～ 4mm(. The module type boring cutter of company of graph 2 Ingersoll, it but the need according to the user, assemble the module element of inventory boring system directly of course, this is not to mean sheet sincere boring lever will be in very quickly either time exits historical arena. Ingersoll company also invested product line of lever of boring of a sincere, use direct a start that serves as them, they may apply PCD to set bit to machine nonferrous metal, or use CBN sets bit treatment is cast-iron. Need to adjust only of bit before, hind horn, can make bore diameter achieves corresponding precision requirement. Lever of this kind of boring does not need be accompanying bore to be able to bore hole automatically. Occasionally, foundation of company of Ingersoll cutting tool is so called can accuse arbor a future life to produce rod of this kind of boring, can mix to main shaft any places without calibration undertake compensating between workpiece, the result is very accordingly right. These arbor jacket have adjustment screw, the banking angle that can compensate X axis and Y axis is spent, make operate personnel to be able to be measured according to the relative position of workpiece thereby adjust cutting tool. Of this kind of cutting tool among them the valve base that an utility is boring treatment car. Produce a kind of special cutting tool to apply on a kind of arbor that can accuse, perhaps can make the client need not undertake to air cylinder body or air cylinder lid grinding is machined, its economic benefits is very considerable. Couplet axis orgnaization raises the another new development of the stability boring processing technique of boring cutter to bring about the cutting tool clip with be used better to maintain pattern. Undertake to can be on lathe boring is machined for example, sandvik Coromant company developed a kind to call EasyFix to place held sleeve easily, this kind of sleeve simplified the cutting tool adjustment on central line dead center program. When the boring staff that installs lesser diameter, this one function can help an user spare very much time, because the boring staff of lesser diameter is controlled harder, apply at central line deviation commonly lesser and harm huge place. To gyral applied domain, the engineers of Sandvik company concentrate total energy in the stability respect of cutting tool. In the past, people holds cutting tool clip in the Duan Xi that has straight handle and a few screw only the knife is placed on. The common fixture of use Allen screw and boring cutter clip can produce 7% ～ to the diameter only the consequence of 10% . Because osculatory quantity is less, because this is not quite stable, easy generation is oscillatory, be in especially cutting rate is general today taller, and it is such more below the circumstance that is in long-term suspension. Accordingly, before a lot of tool manufacturer returned drawing board again afresh, begin to develop the couplet axis orgnaization that can increase stability. Be in Sandvik company, engineers use the orgnaization of axis of Coromant Capto couplet of this company, this kind of orgnaization is a foundation with polygonal system, can make the interface of boring lever distributings equably along the axes part of orgnaization of its couplet axis in circumferential on. Place a mobile screw after with about 35.

The axial of 6N is tensile, play each part of this orgnaization Xiang Suo to tighten cone to go up together. Such, not only obtained face-to-face contact, and still assured cutting tool the clip all around holds power. Couplet axis fixture can make cutting force distributings in whole polygon all round, the deviation of orgnaization of each couplet axis is 0.

0051mm. As a result of its interface pulling force of big, axial is tall, smooth quench exterior hardness amounts to RC63, because this stability that its produce and tigidity make,module type combines cutting tool to have better advantage than sincere arbor. The join between each component is nodded not only won't produce vibration, and still can assign boring staff into a few parts, make its and more appropriate, advantageous frequency harmonious thereby. The module formula that uses this kind of concept combines cutting tool, actually its machine function more stabler than sincere boring lever. Although use more stable design and better manufacturing technology to have important sense, but lopsided sex is the weakness with this craft inherent place, already became a sharp issue below the circumstance of rotate speed of nowadays tall main shaft. Machining boring cutter is the cutting tool of a kind of prejudicial on main shaft installation commonly. The mobile direction of cutting tool is perpendicular Yu Xuan runner shaft, and from this and the lopsided sex with larger generation, undertake correction to the diameter thereby. In because be in,going a few years, the rate of main shaft is rising ceaselessly, because this should maintain tolerancepublic errand precision and better appearance bright and clean it is more and more difficult to spend. The balance sex warning that raises boring cutter hereat, come a few years, boring cutter manufacturer people the balance increased to match reshipment buy on boring cutter head. The generation product that introduces this kind of type needs technology and time. Adjusting diameter while, operation personnel needs handiwork adjustment weight, technical personnel need determines on balancing machine cutting tool, adjust match reshipment buy, achieve a balance till cutting tool till. Be in however now, in the workshop that always produces in lesser batch, if need to pack an each second time as far as possible to the adjustment of cutting tool, the time that uses flower of place of this kind of method is too long really. For this, company of accurate like BIG Kaiser cutting tool in that way tool manufacturer people developed the boring cutter head that can compensate a balance automatically (3) seeing a picture, the user can make when boring diameter boring cutter has the effect of the balance. When setting bit to move, match reshipment buy to also move ceaselessly on opposite way will compensate a balance. Accordingly, need to adjust only. This kind of method already but spare time, can reduce the engine that produces an error to lead again. Graph the fillet of 3 this kind of new-style boring cutter that by BIG Kaiser nicety cutting tool company offers had company of Command of aluminous body and self-poise orgnaization to still install a kind inside buy orgnaization, when machining special diameter, can simplify the balance program of head of boring cutter of its Urma MicroMax. Its design a characteristic is to be able to let operate personnel to balance boring cutter head accurately, and do not need to put them on balancing machine to measure. This kind of method can use higher boring rate than common cutting tool. The boring below balance position is machined, still can rise circularity and surface are bright and clean degree. Below certain circumstance, when gyral speed is as high as 20000r/min, boring cutter head gives these advantage with respect to can sufficient play. The improvement in stability respect not the innovation of head of boring cutter of bureau be confined to. Tool manufacturer also takes all sorts of step in effort, in order to overcome the oscillatory problem of boring cutter, install orgnaization of a few vibration isolation in its interior for example. After installing these orgnaizations, but outspread its are actual length: Make the scale of diametical freely or cantilever length achieve 15 times of the diameter. Below certain circumstance, if can be used correctly,principle of coordination is mixed set bit geometry figure, sandvik Coromant company still can make the length of boring lever achieves 20 times of the diameter. Although vibration isolation device can raise the cost of boring lever, but Sumitomo company thinks its are new-style the economic performance that aux will be able to of lever of boring of vibration isolation X- changes this one technology. The boring lever of this kind of steeliness includes an unit of simple mechanical vibration isolation, say according to the report this device can control vibration well, can produce very fast face thereby bright and clean degree, below the circumstance of 6 times diameter, can prolong the service life of cutting tool. Cutting tool system has better balance sex and bigger tigidity, this one advantage makes it can configure application a few set bit technology, to boring treatment, the sense is great. For example, sandvik Coromant company had raised to contain those who sweep plant to set bit on series of boring cutter of its finish machining. The blade face that because sweeping device geometry appearance,goes up is longer, and swept device to also strengthen radius of point of a knife, make edge can keep longer cut bits. The geometrical appearance that sweeps plant raised feed rate not only, and also improved the appearance bright and clean degree, return leave out actually grinding working procedure. Because they still allow to use very sharp the crucial point, should maintain on bore diameter 0.

The public errand of 5 ‰ is very blazing. Of course, the attrition force of the interface in cutting process is bigger generation can be jumped over big. Accordingly, sandvik company is swept for its implement set bit to design special level and special geometry form, make thereby cutting movement as far as possible freedom, arise in order to restrict caloric, bear an extra quantity of heat that produces possibly. Sandvik company still is recommended use the cutting liquid that passes cutting tool, in order to help cooling cutting area, make its maintain very good tolerancepublic errand measure. To improve the productivity of rough machining, sandvik company introduced type of 3 blade module to combine boring staff -- CoroBore 820. The engineers of this company rotate for this the slideway system that cutting tool developed structure of type of a kind of module, replace common sleeve type orgnaization, in two cavity that go up in order to make its can secure installation to lever of double blade boring. Additional the productivity of the device that addition cavity can compare form of double cutting head rises 50% . The balance sex with contemporary better boring cutter and stability, still have another main good point, this is they can use those who advanced material is made to set bit, for example CBN is set bit sets bit with what contain PCD point of a knife or PCD blade scale. To improve the balance effectiveness of boring cutter of high rotate speed, seco Carboloy company once had done a lot of tests, especially aluminous to resembling material in that way nonferrous metal. CNC Milling CNC Machining