Right choice aperture machines strategy

1mm) when, the power that machines a machine tool to aperture and stability demand become very important. Still have a factor that must consider: It is need efficient the aperture with many treatment, mere still need is machined a few aperture. In addition, the ability offerring money of the process capability of the machine tool and applicable cutting tool also is the serious problem that job shops must consider. Cover with tiles the product manager Patrick Nehls of company of Er spy United States points out: "Getting cut bore diameter 44.

When the aperture under 45mm, use but dislocation broach mixes special economy efficient, but the aperture that exceeds this one measure is used rarely but dislocation broach treatment, use rarely even auger cut means treatment. " using certainly why to plant when aperture machines strategy, full company of coke of gram of hill spy dimension suggests the consideration is the following 5 element: ① aperture, hole depth, public errand, surface is bright and clean degree of structure with aperture; The structural characteristic of ② workpiece, the stability that includes clip to hold, dangerous extend quantity and turning quality; System of the power of ③ machine tool, rotate speed, cooling fluid and stability; ④ machines batch (10 aperture or 10 thousand about a hundred aperture) ; ⑤ finished cost. Once decided the aperture that needs treatment and hole depth, next the machine tool process capability that the problem finishs these aperture to machine a need namely and cutting tool offer goods capability, this depends on the library mixes the knife that job shops has a machine tool to trade knife unit automatically, and the applicable cutting tool that tool manufacturer provides. The Kong Jia of article discussion is versed in limits does not include to use a makings getting to machine 3 ″ ～ 6 ″ (76.

2 ～ 152.

4mm) big diameter aperture (if machine deep aperture with gun getting) and bore hole treatment. Unless have a specification additionally, assume hole depth does not exceed 5 commonly times aperture (5D) . Can get the size upper limit that cuts treatment hole to depend on the power that broach of machine tool drive gets workpiece stuff place to need and stability. Of full company of coke of gram of hill spy dimension rotate explanation of Bruce Carter of manager of cutting tool product says: "Get the limitation that cuts treatment to depend on commonly machine tool process capability, include force of the dimension of the machine tool, power, installation, feed and torque. For example, when considering machine tool power, the whole horse power that affirmatory machine tool can provide and torque limits are very important. " the development as cutting tool technology, machine tool technology and can realize fixed method process designing conveniently, helix interpolation milling (namely helix milling) , circumferential interpolation milling and insert mill (namely Z axis milling) becoming manufacturer to machine big diameter the utility preference of Kong Heao antrum. To this kind of treatment, auger cut a likelihood to be not optimal treatment means. (1) helix interpolation milling is to use milling cutter to inclined Xiang Xi enters work semifinished product or already was machined go out beforehand aperture, making X/Y next to circular motion while helix of edge Z axis is down milling, in order to realize reaming treatment. (2) circumferential interpolation milling is milling cutter around already machined beforehand the external diameter of aperture or internal diameter enter a milling taking a knife greatly with complete tine, in order to realize reaming treatment. (3) insert mill (or Z axis milling) cut through undertaking inserting along the humeral wall successive of workpiece, machine while thick mill gives sunken speech (auger cut) give a new opening. "Helix and circumferential interpolation milling can use limited machine tool power (like 10 horsepower [7.

5kW] or 15 horsepower [11.

2kW] ) treatment goes out use common bit may the big diameter aperture that dislocation broach cannot machine, " the explanation of product manager Konrad Forman of cutting tool company says Ingersoll, "Cut hole of a big diameter to get, traditional treatment pattern is the broach drill that uses a lesser diameter above all, next successive changes the bit that uses bigger diameter to enlarge bore diameter. This must purchase all sorts of broach of a need, should cost additional time to change broach. And use a milling cutter in X/Y/Z at the same time 3 axes direction undertakes helix brae milling, can be in directly without the bore diameter dimension that need giving place machines on the semifinished product material of aperture beforehand. " Forman says, want craft to apply only proper, efficient milling cutter can machine a circularity to be in 0.

0005" (0.

013mm) less than has nice face bright and clean spent aperture. Helix interpolation milling can use the standard milling cutter of a variety of different types, include milling cutter of square shoulder milling cutter, circular button milling cutter, tall feed, helix milling cutter to wait. The fixed loop that interpolation of useful Yu Luo coming back machines machine tool of most contemporary numerical control. In machine tool of 3 axes treatment, this kind of fixed loop can finish X, Y, Z3 fast process designing of the axis. In addition, interpolation included to machine the more complex algorithm of a need even in CAM software program. "What want an user to use only is not vintage CAM software package or numerical control system, they generate helix knife easily orbit or circumferential knife orbit. " the product manager William Fiorenza of cutting tool company says Ingersoll, "The trade is made in cutting tool and mould, the CNC Machining program of about 60 ％ is woven from the line by professional programmer, they can write a treatment efficiency is highest and contrail of realizable cutting tool; And the machine program of additionally 40 ％ is written by well-trained mechanical technology division. " country of Yi Sika company grooms manager Michael Gadzinski points out, in helix and circumferential interpolation treatment, the cutting length of bit and terminal user hope retentive dimension public errand is the crucial factor that needs a consideration. "Can use integral hard alloy to establish milling cutter, but be confined to treatment shallow aperture normally, because cutting tool clip is held,the problem may restrict the deepness that interpolation machines. Deep aperture is to use normally but dislocation hard alloy establishs milling cutter or face milling cutter undertakes machining, better with obtaining appearance is bright and clean spend and cleaner, flatter hole wall. " Gadzinski says. The occurrence of the treatment that insert mill already had quite long time, and becoming increasingly popular now. "The treatment that insert mill is mixed gay by the machine tool technology that a reason is now process designing of man-machine interaction type makes terminal user can easily set inserts mill step pitch, and need not undertake manual process designing to machining G to pile up entirely. " Gadzinski explanation says. Latter, tool manufacturer already began to center force to design development to have the cutting tool of the optimal function that insert mill. In mould manufacturing industry, insert mill already by fair the efficient treatment means that considers as a kind of thick mill mould antrum. "People discovery, use insert mill to undertake rough machining can shorten handling time, the linear treatment means that excel uses normally, " Gadzinski says. The mark of arris shape knife that after inserting mill, leaves on workpiece can pass helix milling or groovy semifinishing machining and finish machining give purify. Helix interpolation milling is means of treatment of a kind of efficient aperture, winning wider and wider application. It asks cutting tool has brae milling function. Compare with photograph of circumferential interpolation milling, when brae hole milling undertakes below axial of Z of cutting tool edge, the helix cutting motion that be down can reduce action to have the side direction pressure that go up at the knife, and the face of whole and radial joint of the cutting tool when circumferential hole milling and workpiece should bear overall cutting force. "Already should get on workpiece have beforehand aperture, and when you want to expand its some spy to decide size, use circumferential interpolation milling very effective, no matter be machined,aperture is via or blind aperture. " the explanation of product manager Jim Minock of company of hill tall cutting tool says, "Till complete knife is deep,insert cutting tool Kongzhong above all, undertake completely circumferential milling around aperture next. If need to continue to increase the depth of aperture, can reduce cutting tool position, repeat next undertake circumferential milling, till mill of will whole workpiece is connected. " the opening that uses to the likelihood machines strategy, only limitation is the imagination of programmer and mechanical technology division and process designing skill. In order to be in 28 ″ (711.

2mm) a 12 ″ are machined on deep 4140 material work (304.

8mm) via is exemple, company of hill tall cutting tool is replaced through using milling of helix interpolation brae flat auger / the craft that insert mill, can shorten for the user the handling time of 2 hours of above. The technology that the user uses so is to use 8 ″ first (203.

2mm) but dislocation is flat auger get a deepness to be 14 ″ (355.

6mm) aperture, reoccupy diameter 6 ″ (152.

4mm) insert milling cutter to enlarge bore diameter dimension to 12 ″ (304.

8mm) . Next workpiece tune, repeat in the across of workpiece have afore-mentioned treatment, final treatment gives a via. Hill Gao Dao provides what the company uses to optimize treatment strategy is to use a diameter 6.

6 ″ (167.

6mm) milling cutter of tall feed Cassette undertakes hole milling of helix interpolation brae. The user can finish the rough machining of aperture inside 20 minutes, can complete the full treatment of aperture with 40 minutes. And use former technology, the treatment of each edge needs work time-consuming 85.

2 minutes, the full treatment of both sides of the workpiece that finish needs 170.

4 minutes. Helix interpolation motion can move completely with brae or the planar motion of milling outline combines application. Cover with tiles the Nehls explanation of company of Er spy United States says: "Inspect brae milling or helix interpolation milling when you, or the planar milling of brae milling and workpiece outline, you can discover to there are a lot of same places between them. When using helix interpolation hole milling, you are to machine an aperture of a circle to be down Dao Xi to know whole work with helix means, you also can use this kind of helix completely to athletic way turns it and be used at steep ramp milling, use transversely work and not be to enter the means of workpiece to come milling workpiece outline. " in certain treatment application, the processing technique of innovation sex may need to use a few new-style muti_function auger cut cutting tool. If where,the Forman of company of cutting tool of Er of flower case all alone was described a 50 taper, 50 horsepower (37.

3kW) the tradition is used to machine a method on the machine tool, insert quickly on material of 6Al4V titanium alloy with Quad broach get a 7 ″ (177.

8mm) deep, 4 ″ (101.

6mm) wide, 11 ″ (279.

4mm) long sunken speech. "The traditional way that opens sunken antrum is to use ″ of 31/2 of a diameter first (88.

9mm) broach is inclined to get enter hole, use ″ of a 21/2 next (63.

5mm) face milling cutter around enter milling of Kong Zou knife, use short thick knife handle in the begining, change when length is insufficient with lengthen knife handle. Because bottom has radius 1 ″ (25.

4mm) circular arc, because this need uses bazoo of long handle ball,milling cutter is machined. " " can undertake inserting getting as a result of our Quad broach, because method of these another kind of treatment is,use ″ of a 31/4 first (82.

55mm) Quad broach is inserted downward get as far as possible deep but the place that won't destroy bottom circular arc again, use bit next with 50 ％ ～ transverse treatment taking a knife gives the span of 75 ％ a passageway that discharge bits, make titanium alloy cuts bits can smooth eduction and won't form the tumour that accumulate bits. Use establish milling cutter edge identically knife milling goes all round sidewall, establish milling cutter to have precision work with ball bazoo next, also machine a sector sunken antrum easily. " Forman says finally. Cutting tool of a few kinds of new-style and efficient treatment introduces below: (1) the Turbo of company of hill tall cutting tool but dislocation square shoulder establishs milling cutter this kind of Gao Jin gives cutting tool usable Yu Luo hole milling of interpolation coming back and circumferential hole milling. It uses a kind of unique bit figure, can with can be being decreased effectively thin those who cut bits is small cut lead greatly with extremely tall feed undertake milling, achieve rate of tall metal excision thereby. Cutting tool of this kind of circle basically is used at profile modeling milling to machine, but also can undertake is down brae milling and interpolation milling in helix milling treatment. In addition, use what use with place of helix interpolation milling is same establish Turbo milling cutter still can complete the treatment that insert mill. (2) the broach of CoroDrill 880 of CoroDrill 880 broach of full company of coke of gram of hill spy dimension has 4 cutting blade and scrape blade, treatment of interpolation of usable Yu Luo coming back, insert get and bore hole. Already appeared on the market at present the norms of the product is: Broach diameter 0.

473 ″ ～ 2.

5 ″ (12.

7 ～ 63.

5mm) , 5D of ～ of broach length 2D. The diameter of CoroMill 210 can arrive 4.

0 ″ (99.

06mm) , can use at inserting mill and mill of tall feed face. Undertake inserting mill with CoroMill 210 (when work of milling of wall of deep shoulder of if milling is deep sunken antrum or edge is outside) can be in axial purify is many metallic stuff. (3) cover with tiles the milling cutter of shoulder of F4042 of milling cutter of Xtra-tec F4042 shoulder of company of Er spy United States can be machined piece have nice face bright and clean shoulder of spent 90 ° stage; F2330 Gao Jin used bit of 3 cycloidal blade to milling cutter; Of milling cutter of razor blade of F2334 circle button hind it is square or hexagon actually, because this does not need to use coping clamp to prevent roll, can use 4, 6 are mixed 8 cutting blade; F2280 octagonal milling cutter uses 4 cutting blade to undertake helix interpolation milling, bit used point of a knife of 2 photographs adjacent. (4) the lengthen cutting blade that the milling cutter of Heliplus of Heliplus milling cutter of Yi Sika company used 22mm, can use at abrupt helix interpolation milling, deep antrum to insert milling and circumferential interpolation milling. Machine in the mould, hang the treatment that extend a capacity and need purify greatly in the treatment of material of many semifinished product, can use Plungemill milling cutter and Feedmill milling cutter to undertake mill is machined inserting. (5) the limits of diameter of Quad broach cutting tool of company of cutting tool of Er of flower case all alone 0.

625 ″ ～ 3.

25 ″ (15.

9 ～ 82.

6mm) Quad broach uses burden square razor blade to undertake inserting getting machining; The diametical range that S-MAX plugs milling cutter is 2 ″ ～ 4 ″ (50.

8 ～ 101.

6mm) , can use 0.

600 ″ (15.

24mm) big span treatment; ChipSurfer whole hard alloy is inserted auger - the diametical limits of the cutting tool that insert mill is 0.

375 ″ ～ 0.

625 ″ (9.

53 ～ 15.

88mm) , suit treatment to include alloy of stainless steel, high temperature inside all sorts of workpiece material; Punch-In-Quad is big the diametical range that horn plugs milling cutter is 0.

75 ″ ～ 4.

00 ″ (19.

05 ～ 101.

6mm) , use quadrangular bit. (6) the high speed that design of this series cutting tool uses the cutting tool of Mill1 Max series that Kennajin belongs to a company at workpiece of aviation aluminium alloy, Gao Jin gives treatment. Optional limits is the radius of circular arc of point of a knife of cutting tool of Mill1 Max series 0.

8 ～ 6.

4mm; Cutting tool sort includes to establish the milling cutter, milling cutter that cover type and integral type knife handle (Monoblock) tool collet; Milling cutter of face of KSOM Mini series and razor blade use the part after 25 ° , there is 8 cuttings blade on bit, can use at chamfer of face mill, brae mill, helix brae mill, mill to mix insert the treatment such as mill. CNC Milling