Complex meaning

The complex turning processing possibly is the cutting tool and on axial simultaneously enters in the radial direction for the processing forms the different components 廓形. In addition, other complex factors also include the work piece material 可加工�, the expectation output and the engine bed ability, certainly also has the date of delivery and the processing cost. Must pay attention is a workshop thought the complex components by another workshop were perhaps revealed is the conventional components, namely components complexity certainly not always very obvious. □□

Mr. Voss industrial corporation's John Campell pointed out that, looks like the simple components compared to be perhaps complex shape components to have the challenge. He worked 718 nickel alloy flanges turning processing and coil attachment Canada to compare. Although the coil attachment requests 10 times of installments and 24 working procedures, after but once installs starts the processing, this process no longer needs to adjust. On the other hand, 718 alloy flanges request in the processing process continuously to carry on the adjustment to compensate the material snapping back, the contraction and the cutting tool attrition. Moreover, different material, similar shape work piece to 切削�?the response is different. Take the flange as the example, in the material stipulation scope, the nickel and the chromium element change possibly causes one batch of materials changes with between another batch of materials as well as the components and the components cutting condition.

Choice bit geometry shape

Turning complex components, the most basic request is 切削�?can enter the region which 廓形 is at to the components. This request choice suitable bit shape, host angle of deflection, vice- angle of deflection, front angle and 后角. When choice bit shape, the key is should consider the bit the intensity. Among them, 圆刀�?the intensity is highest. To the non- circular bit, 刀���?is bigger, it strongly goes past high. But as a result of 隙角 reason, profiling turning usual use 35° or 55° diamond bit. The cutter bar choice by requests the path which cuts into to decide in fact, if needs to carry on the complex profiling turning, then may choose installs the diamond bit the J cutter bar, like this may form in a big way 后角.

The bit 刀���?and the host angle of deflection was deciding together whether the cutting tool does enter the work piece outline; After the work piece and the bit 主切削刃 between gap, the vice- knife surface and its the next half part 后角 are very important. Do we frequently depend on the estimate, whether experience determine the cutting tool to enter to the work piece and its the correlation 后角. This method is very time-consuming. Now the CAD mapping and cutting simulation software carries on the simulation cutting on the computer display monitor but not to need to carry in the actual components. □□

American green leaf company's Dale Hill said that, their company directly according to the CAD blueprint which the customer provides to carry on the cutting tool design. Designs the personnel to be allowed to see the cutting tool whether needs 铲背 or the cutting tool whether enters a trench region. Regarding some genuine complex 廓形 components, uses the standard cutting tool usually is not feasible, because they usually cannot enter to the complex components concave cavity and 拐角�? But the computer simulation may accelerate the special-purpose cutting tool design.

Bit 后角

In front of after the bit host the angle and the vice- front angle will decide between the knife surface and the work piece 后角. The different material request is different 后角. For example works as when processing tough material, in particular nickel base alloy, its 回弹�?is extremely big. These alloy can in 切削�?front blow up, in 切削�?has the snapping back through after. After these snapping backs work pieces will blow scratch the knife surface, and will have the massive cuttings heat. Moreover the nickel base material work hardening also can have the cutting heat, finally causes the cutting tool hot expiration. The expiration form possibly is 崩刃, but 切削�?the heat expansion will cause the cutting tool break. □□

Titanium metal material possible snapping back 0.05mm and 0.08mm, therefore processes time this kind of material requests has between the after knife surface and the work piece 14° or 15° 后角, prevents the hot expiration. However the titanium and the plastic have similarly 回弹�? When processing titanium metal, 后角 too the young fellow creates the bit hot expiration. Such cutting tool when processing plastic, will produce by the snapping back 切削�?and cuts hotly melts the plastic work piece. □□

The bit 后角 will not be able oversized, oversized 后角 to be able to reduce the bit the intensity; Has no children the angle bit to have the enough intensity, but must install on 负前�?the cutter bar forms enough 后角. Uses has the front angle 槽形 has no children the angle bit to be possible to guarantee needs bit intensity, also may form the front angle the cutting. □�?/p>

切削�?and 切屑 control

In the work piece, the cutting tool and the turning system between other factors relate the change will affect the effective 切屑 control. For example, in profiling turning processing, when the bit moves from the work piece center to outside, the thickness of chip changes thinly, the cutter depth increases, 切屑 control worsening. A solution is 走刀 divides into two time 走刀, for will change into to outside entering enters to the center gives, will obtain final 廓形. □□

The thin wall tall and slender components attire clamps with difficulty, 切削�?possibly causes the work piece distortion and the range surface roughness even causes the components to discard. Specially designs, may control 切屑 the bit to be allowed to reduce this kind of distortion. The green leaf company provides a specific name is the TurboForm precision work hard alloy bit, it has the very big front angle and the suppressed chip breaker, therefore produces 切削�?is very low. At the same time, this bit peripheral process precisely rubs truncates, therefore has the very high smooth finish. If an aviation manufacturer when processing jet engine compressor thin wall seal titanium components, because the cutting tool vibrates causes the bit 崩刃 and processing 表面�?fineness reduces. After uses the TurboForm bit, eliminated the phenomenon which the bit vibration and the work piece distorts, lengthened the cutting tool life. □�?/p>

If the work piece material 可加工� has created the turning processing complexity, then to enlarge this kind of complexity by two kind of materials constitutions components possible pair of time. Therefore when processes by the many kinds of materials constitution components, means are the choice may process the different material the bit trademark. For example works as when the processing interior is 4,340 steel, exterior for the nickel base alloy components, the manufacturer must when the programming increases a suspension procedure, in order to replaces the bit. Uses two kind of different trademarks the bits to carry on the processing, when its bit life very was still low, then recommended uses the Japanese Sumitomo electrician company AC2000 the CVD coating bit, through changed processes the above two kind of materials for the quantity and the cutting speed, did not need the engine off replacement bit, remarkably to enhance the cutting tool life. □□

Resharpens

Some components outlines cannot simply use the ready-made bit to carry on the processing. Carries on when the use 负前�?J cutter bar cuts into the type cutting, after 35° the bit vice- knife surface next half part is possible and the work piece has the collision, causes the bit break. Prevented this kind of situation a method is rubs off the hindrance cutting this part. □□

Steam turbine circuitry manufacturer Mr. Jeff Carver said that, they frequently use the extremely sharp cutting tool to process the components, because frequently does not have the standard the cutting tool, therefore needs frequently to resharpen the cutting tool. □□

Although some manufacture merchants like the standard bit which keeps in stock, through resharpens satisfies the specific processing request, but these resharpen the bit also may directly produce the factory purchase from the cutting tool, because they already for processed certain peculiar parts to prepare the special-purpose bit. When resharpens cutting tool 走刀 center cannot answer the purpose when, the only choice is the engine off, uses another kind of bit to complete the cutting. The deficiency is needs to spend the time, and must sever time 走刀, this will stay behind on the work piece 刀��. □□

Engine bed

The CNC engine bed manufacturer unceasingly introduces the advanced technology to simplify the complex components the turning. Compared with is typical is the Mazak Corporation's multi-purpose vehicle/milling machine. These engine beds like to have the turning main axle in a work table end the processing center. The engine bed B axis in the processing can along the components radial direction rotation 225°, this cause the knife point radius throughout at with the cutting 相切 direction in, may use a knife to complete the multichannel working procedure. □□

In brief, the metal cutting discipline progress will certainly to cause the complex components the turning to change easily, must think the economy effectively processes some complex components, or needs the craft factor the coordination.