The efficient and accurate bore with a reamer that faces user demand cuts cutting tool
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The manufacturer of component of car of MODCO BHR reamer of Valenite company is faced with control cost and " offer money immediately (Just-in-time-supply) " pressure, for this they must handling time cut to the shortest. One of methods that achieve this one goal use the advanced treatment device that can change part of treatment the next quickly from a spare parts namely, this is machined with respect to the production line that brought about a tradition unit (Machining Cells) be replaced. Below a lot of circumstances, machine tools of these CNC numerical control in processing unit must deploy new-style cutting tool system. The servo that MODCO BHR uses generally to replace traditional product line - adjustable type reamer, valenite company (Valenite LLC, be located in Madison Heights of city of American close root) developed a kind to suit to be on machine tool of CNC numerical control and product line the new-style bore with a reamer that undertakes efficient, high accuracy bore with a reamer cuts treatment cuts a system. Reamer of this kind of solder head type that the name is MODCO (Brazed Head Reamer, BHR) the characteristic is interchangeability good, solder has the bore with a reamer of tooth of many hard alloy to cut a head to be able to change quickly. This kind change join orgnaization quickly to have enough tall tigidity and installation repeatability, change after bore with a reamer cuts a head, do not need, can bore with a reamer cuts treatment to give the narrow opening that accords with precision of ISO H7 class. In addition, structure of much cutting blade makes cutting force distributings even, make reamer can have large quantities of amounts with taller cutting parameter thereby efficient treatment. For example, when bore with a reamer cuts treatment medium carbon steel and high-carbon steel work, can use cutting rate commonly 50 ～ 100m/min, feed is led 0.
40~0.
50mm/r; Treatment surface surface roughness can amount to Ra0.
3 ～ 0.
8 μ M. Recently, valenite company in order to bale custom-built means, the equipment manufacturer that is auto industry (OEMs) reach its the main trend that main supplier uses makes a program provide treatment cutting tool. MODCO BHR reamer is a basis machine tool of specific treatment data, treatment configures technically with production lot. This bore with a reamer cuts systematic design to have 5 kinds of different knife handle measure, the bore with a reamer that matchs to it cuts a head to be able to be used at bore with a reamer to cut φ of treatment diameter dimension 9.
75 ～ 32.
The blind aperture of 50mm or via. Diametical dimension φ 15.
The Kong Cai under 49mm cuts a treatment with 4 tine bore with a reamer, φ 15.
The Kong Zecai of 50mm above cuts a treatment with 6 tine bore with a reamer. Tooth material shares two kinds of names, one kind is not of coating exceed VP-1R20 of brand of fine grained hard alloy, suit bore with a reamer to cut aluminium and other to be not metal of iron a group of things with common features and titanium alloy to wait; Another kind is PVD TiN coating exceed VP-5R15 of brand of fine grained hard alloy, use at treatment steel and stainless steel, cast-iron and all nickel / cobaltic / alloy of Tie Jichao class. Valenite company is in charge of machining the product manager Bob of the solution.
Keleman points out, reamer is cutting tool of a kind of finish machining, is not the primary treatment cutting tool that is used at purify metal stuff. He says, "Typical aperture treatment operation is bore → to bore hole normally aperture of → bore with a reamer, the aperture quality that if get,cuts is higher, also can undertake bore with a reamer cuts treatment directly, but aperture of bore with a reamer excises much work material impossibly, it is a kind of finish machining after all " . When using opening of BHR reamer bore with a reamer, the surplus of excision of the oldest stuff of every edge is 0.
25mm. Because this reamer is had,direct oneself function, because this Valenite company is recommended with adjustable collet of type and float cutting tool cooperates to use. Keleman says, "Normally reamer general the bottom outlet feed that goes up to already had been machined along workpiece, handlers should do just make reamer a few radial move, in order to determine the central position of aperture. " Keleman still points out, when the car part that uses new-style data in cutting treatment, use treatment unit to produce means to conduce to improve manufacturing efficiency. And on production line cutting is machined easy bring about cutting tool when material of fast tatty high strenth, tall abrasion, because change to the need when cutting tool stops often and start whole automation line afresh, because this meeting reduces manufacturing efficiency greatly. Treatment unit produces means to allow to use what can change quickly to reserve cutting tool system, realize pair of difficult treatment material easily (the Chinese ink that be like squirm is cast-iron, CGI) the batch bore with a reamer of car spare parts cuts treatment. 2.
The company of Iscar of Bayo T-Ream reamer of Iscar company (Iscar Metals Inc.
, be located in American Texas Arlington) Bayo T-Ream bore with a reamer cuts a system is a kind of when cut treatment development for high speed bore with a reamer only efficient, accurate reamer. The biggest characteristic of this cutting tool was to use be based on what change principle blocking an opening quickly but hard alloy of crossing-over type whole ages bore with a reamer cuts a head more. The bore diameter size range of pipe bent of Bayo T-Ream reamer is φ 9.
5 ～ 32mm, precision of aperture of bore with a reamer can amount to ISO H7 class, the typical cutting parameter when processing low-alloy steel and cast steel data is: Cutting speed 80 ～ 120mm/m, feed is led 0.
7 ～ 1.
1mm/r. Machine a circumstance in the light of the big batch that is first consideration element with cutting speed and this bore with a reamer cuts a system is designed. Allege according to Iscar company, the rate of penetration of a cutting tool that Bayo T-Ream reamer permits can rise 30 times above than common reamer. The depart of function of BAYO T-REAM cutting and fixed position function makes the treatment precision of Bayo T-Ream reamer rises significantly, realized high speed bore with a reamer to cut. The each chamfer blade of reamer included area of a cutting and an oriented division. Cutting area is located in groovy blade the place pouring arris of initiative place, add man-hour to cut bits to be formed here. Oriented area is belt of protruding of a cylindroid, it is propped up in machining a process and guide reamer to pass by aperture of bore with a reamer. Oriented ministry and by the clearance of aperture of bore with a reamer very small, can press smooth action to arriving since workpiece surface. Cylindrical the action of oriented ministry still can make of reamer pour taper to reduce, the diametical size that the diametical dimension with hind reamer compares forehead only is small 0.
01 ～ 0.
02mm. The tall treatment precision of Bayo T-Ream reamer and tall cutting speed make his right the more strict requirement when the tigidity that processes a system put forward more traditional than using reamer. The Keleige of domestic product manager of treatment of Iscar firm responsible opening and cutting tool of circle of integral hard alloy.
Saigelin says, "Bayo T-Ream reamer has pretty good tigidity, when it installation is when SRKIN contractive collet or ShortIN collet are medium, its are dangerous extend length to be only 1.
25 ″ (32mm) , won't happen accordingly deflective. If use float collet, must undertake pretreatment to be in by the entrance of aperture of bore with a reamer, make the angle pouring arris on its and reamer matchs completely. Most reamer always is along obstruction the smallest way is entered by aperture of bore with a reamer, but the diametical part of once reamer is cylindrical oriented ministry enters Kong Zhong, reamer is met along linear feed. Like boring hole with boring cutter, if be existed by aperture of bore with a reamer prejudicial or taper, bayo T-Ream reamer but its alignment. " Iscar company is recommended, treatment of reamer of use Bayo T-Ream is cast-iron with steel when, cut the result to obtain optimal bore with a reamer, beforehand the aperture that the diameter of aperture of bore with a reamer should give than needing to machine is small 0.
2 ～ 0.
3mm; And processing weaker workpiece data (like aluminium) when, beforehand the aperture that the diameter of aperture of bore with a reamer should give than needing to machine is small 0.
3 ～ 0.
4mm. In addition, treatment of aperture of bore with a reamer should be in with the bore treatment before this same workpiece mix holds position next undertaking, if aperture of bore with a reamer adds the workpiece of labour,change somewhat, should increase difference of allow of aperture of bore with a reamer. Iscar company points out, bayo T-Ream reamer can make be increased at most by the diameter of aperture of bore with a reamer 8mm, accordingly it can apply at the finish machining of tall narrow opening alone. Treatment blind aperture and the T-Ream reamer of via differ somewhat on groove structure. The reamer that is used at machining blind aperture uses straight chamfer structure, because straight chamfer can is,be cut to what give blind opening by cooling fluid bits offers the smooth channel that discharge bits; And when machining via, the reamer that the design is chamfer of left helix coming back but will cut bits be pushed ahead, prevent to cut bits to flow along knife chamfer, can protect the exterior quality of aperture. In addition, compare with straight chamfer photograph, helix chamfer causes vibration not easily, because this suits treatment more intermittent aperture and irregular aperture. Another of T-Ream reamer design characteristic that can rise to decrease display vigour to use is knife chamfer is asymmetrical distributing. Bore with a reamer cuts the circumferential each knife chamfer outside the head to use differ span distributings can prevent effectively to be able to be reduced by precision of aperture of bore with a reamer (circularity and cylinder are spent) syntonic is formed. Nevertheless, measure the actual cutting diameter of reamer accurately to facilitate, among them two knives chamfer used 180 ° to distributing symmetrically each other. Iscar company points out, to still can maintain good treatment precision when high speed bore with a reamer is cut, cut the radial between the head to beat control arrives with respect to collet of main shaft of need general machine tool, cutting tool, knife handle and bore with a reamer the smallest degree. If unwarrantable control diameter jumps the effect, recommend use difference of bigger allow of aperture of bore with a reamer. If machine the tigidity of the machine tool to be able to 't satisfy the demand that high speed bore with a reamer cuts, the bore with a reamer that should consider to use a convention cuts craft. The cutting speed with Bayo T-Ream applicable reamer and feed are led all the reamer of far outclass tradition. The product manager Segerlin of Iscar company listed a bore with a reamer to cut steel treatment example: He processes steel of agglutinant material 12L44 with Bayo T-Ream reamer when adoption treatment parameter is: 1500rpm of main shaft rotate speed, cutting speed 36ipm (900mm/min) , every tine cuts bits ply 0.
004 ″ (0.
1mm) , hole depth of bore with a reamer is spent 0.
750 ″ (19mm) . The diameter that machines the opening that give to counteract hole bottom to be in in orifice, aperture all is 0.
6308 ″ (16mm) , without taper error, circularity error is less than 0.
000020 ″ (0.
5 μ M) , exterior surface roughness is Ra4 μ In. Segerlin says, in certain treatment the condition falls, use Bayo T-Ream bore with a reamer to cut can achieve as same as accurate boring treatment result, and treatment rate is rapidder than boring. 3.
The Shefcut bore with a reamer of company of Cogsdill cutting tool - boring is compound cutting tool by company of Cogsdill Tool Products (be located in the Kaluolaina austral the United States city Camden) the Shefcut nicety bore with a reamer that develop and already appeared on the market - system of boring cutting tool has accurate bore with a reamer to cut the double function with accurate boring, this kind compound model the structural characteristic of cutting tool is circumferential outside cutting tool on distributing many direct the knife is filled up, a razor blade of adjustable odd cutting blade is installed on knife mat. The fred of manager of public news report of ShefcutCogsdill company.
Aogeben says, when bit is installed, contain very small pour cone angle, make its cutting function " be similar to sheet to choose cutting type cutting tool almost, although be to use bit cutting means, but it is actually those who use bit before point of a knife undertakes cutting " . This cutting tool is used at by the design taller to linearity and circularity requirement (can amount to ISO H6 class) narrow opening treatment. Man-hour is added on equipment of typical workshop machine tool, the public errand of aperture (include linearity and circularity) general controallable in 0.
0002 ″ (5 μ M) less than, treatment surface surface roughness can amount to Ra4 μ In (when processing certain material, can achieve more Gao Guangjie is spent) . The cutting razor blade that becomes independent each other with cutter hub can be inside narrow range fine tuning, can undertake preliminary adjustments according to the specific aperture dimension that is machined. Aogeben says, "Shefcut cutting tool is not essentially a kind adjustable type reamer, although it has fine tuning function really, but this is a kind of essence only tone (Fine-tuning-type) tone knife. " of bit adjustable limits has only extremely inch, its action is right bore diameter dimension undertakes essence of life mediates wear away to bit undertake compensating. The oriented knife mat that becomes independent each other with cutting razor blade is not adjustable, it is ground to make just in time the bit size of more specific than machining some aperture is small very inch. Knife mat is OK and special custom-built, in order to suit all sorts of specific treatment tasks (aperture of train in excess specified length of if treatment is much diametical aperture, short Konghuo, interrupted cutting, oriented treatment) . The option that the clip of Shefcut cutting tool holds means and cutting parameter depends on the treatment type of a make choice of (Kong Huo of bore with a reamer bores hole) . Should use at aperture of accurate bore with a reamer is machined, cutting tool can locate in the bottom outlet of prior operation, the exterior cutting rate that uses right now normally inferior, clip holds the main shaft collet of cutting tool to use float collet or accurate collet commonly. To increase the treatment of Shefcut cutting tool flexible, the cutter hub dimension after be located in cutting head instantly " contractible " . Aogeben says, "Accordingly, cutting tool will search to be being directed to each by aperture of bore with a reamer the knife fills up as complete as hole wall joint continuously, undertake in this bits bore with a reamer is cut can machine an accurate and straightforward aperture, handlers need not undertake intervention to cutting tool almost. " he listed to be in tilt Shefcut reamer is used on lathe bed lathe (clip is held go up in Cogsdill float collet) the treatment example that accurate bore with a reamer cuts aluminium to make air cylinder hole. The calibration error to aperture of bore with a reamer effect that this cutting tool can remove lathe itself, the crock aperture after classics bore with a reamer is cut need not undertake follow-up honing is machined again. The cutting rate that treatment uses is 150sfm, feed is 0.
007ipr, precision of achieved aperture of bore with a reamer is: Dimension public errand 0.
0002 ″ (5 μ M) , in of μ of Ra5 of exterior surface roughness. When using rigid clip to maintain pattern, shefcut cutting tool can be in treatment (aperture of cast of the boring that be like essence of life) implementation is affirmatory to the essence of bore diameter dimension. Shefcut cutting tool is used at boring is machined, use higher main shaft rotate speed normally, because this is right the rigid demand that processes a system is higher (the nice link that includes main shaft and cutting tool) , can choose HSK collet to may move collet right now. Aogeben says, "In bore hole float collet cannot be used when treatment, because be opposite actually,the need of treatment of boring of essence of life of aperture satisfies requirement of specific bore diameter dimension. " he listed opening of pilot valve of an essence boring (material is casting pig character) treatment example, the diametical dimension of aperture is 0.
6245 ″ , cutting tool rotate speed is 1500rpm, feed is 0.
005ipr, treatment surface surface roughness achieves Ra32 μ In. The positional measurement concern between oriented knife mat and cutting razor blade is the main factor of function of treatment of influence Shefcut cutting tool. Among them crucial dimension is the dimension difference between diameter of oriented knife mat and diameter of the smallest cutting, this difference value is called " region of place of safety " , because want to avoid cutting tool to be damaged in treatment, must preserve this dimension difference from beginning to end. Although also can use micrometer to measure and adjust the cutting diameter of cutting tool, but Cogsdill company still is recommended use a kind of special clamping apparatus that move a knife (machine to batch especially necessary) . When moving a knife with this clamping apparatus, cutting tool park adjustable and top between, measure a head to undertake metrical respectively with two next. In order to direct the diameter of knife mat serves as reference point, one measures a cutting diameter that is used at measuring cutting tool, another measures what the head uses at measuring bit to pour taper. Adjust before the cutting diameter that bolt uses at set razor blade. Through adjusting bolt moves bit till the dimension difference that bit tower above directs the knife is filled up is equal to " region of place of safety " value (namely bit diameter fills up a diameter than the knife big 0.
008 ～ 0.
013mm is controlled) . Adjust after bolt uses at set cutting tool pour taper. Through adjusting bolt moves bit is hind make its and knife level up neat (be less than a knife to fill up a diameter namely about 0.
013 ～ 0.
020mm) . Cogsdill company but the specific treatment demand according to the user is custom-built the norms dimension of Shefcut cutting tool. This company also offers bore with a reamer to cut the series cutting tool that machines dimension of commonly used aperture at the same time, although each among them cutting tool can be used at machining some only specific aperture dimension. So called " standard " cutting tool is the formal stock up with semi-manufactured goods, just ask to grind according to order before delivering the goods to the user make an oriented knife cushion, be installed according to specific bore diameter measure and preliminary adjustments razor blade. CNC Milling