模具高速铣削加工技术--中英文翻译

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Mold

Mold high

high

high speed

speed

speed milling

milling

milling processing

processing

processing technology

technology

Hnman

Hnman Foctors

Foctors

Foctors Ressearch

Ressearch

Ressearch Unit

Unit

Unit ;Institute

;Institute

;Institute of

of sound

sound

sound and

and

and prevention

prevention

prevention vibration

vibration

vibration Rsearch.

Rsearch.

Un iv

iv ersity

ersity

ersity of

of Southampton

Southampton

Southampton so17

so17

so17 .IBJ.UK

.IBJ.UK

The

The abstract

abstract

abstract I ntroduced the high speed milling in the mold processing application as

well as the influence, and brief introduction high speed milling engine bed structure, control

system and cutting tool. Has carried on the simple analysis to the high speed processing

craft.

Key

Key word

word

word high

high

high speed

speed

speed milling;

milling;

milling; m

m old

old

old processing

processing

First,

First, foreword

foreword

In the modern mold production, along with to models artistic and the function must

obtain more and more high, models the internal structure to design more and more complex,

the mold contour design day by day is also complex, the free curved surface accounts for the

proportion to increase unceasingly, the corresponding mold structure also designs more and

more complex. These all set a higher request to the mold processing technology, not only

should guarantee the high manufacture precision and the surface quality, moreover must

pursue the processing surface artistic. Along with is unceasingly thorough to the high speed

processing engineering research, is processing the engine bed, the numerical control system,

the cutting tool system, CAD/ especially Correlation technology and so on CAM software

develops unceasingly under the impetus, high speed processes the technology more and

more many to apply in the mold cavity processing and the manufacture.

The numerical control high-speed cutting processing took in the mold manufacture a

most important advanced manufacture technology, is the collection is highly effective, high

quality, the low consumption in a body advanced manufacture technology. Is opposi te in the

traditional machining, its cutting speed, entered to the speed had the very big enhancement,

moreover cut the mechanism not to be same. The high-speed cutting caused the machining

to have the leap, its specific power metal excision rate enha nced 30%~40%, the cutting

force reduced 30%, the cutting tool working durability enhanced 70%, remained hotly large

scale reduces in the work piece cutting, the low step shudder vanished nearly. Along with

the cutting speed enhancement, unit time semifinished materials material removing rate

increased, the cutting time reduced, the processing efficiency enhanced, thus reduced the

product manufacture cycle, enhanced the product market competitive power. At the same

time, the high speed processing small amount entered quickly causes the cutting force to

reduce, the scrap high speed discharged reduced the work piece cutting force and the

thermal load distorts, enhances the rigidity to be bad and the thin wall components

machining possibility. Because cutting force reducing, the rotational speed enhancement

causes the cutting system the operating frequency to be far away the engine bed the low step

natural frequency, but the work piece surface roughness is most sensitive to the low step

frequency, from this reduced the surface roughness. In mold high hard steel stock

(HRC45~HRC65) in the processing process, uses the high-speed cutting to be possible to

substitute for the working procedure which the electrical finishing and rubs truncates

polishes, thus has avoided the electrode manufacture and the time-consuming electrical

finishing, large scale reduced fitter's polishing with to throw the light quantity. Thin wall

mold work piece more and more needs which regarding some markets in, the high speed

milling also may smoothly complete, moreover in the high speed milling CNC processing

center, a mold attire clamps may complete the multiplex step of processing.

The high speed processing technology has had the huge influence to the mold

processing craft, changed the traditional mold processing to use "the annealing →milling

processing →heat treatment →to rub truncates" or "the electric spark machining →

manually polishes, polishes" and so on the complex long technical process, even might use

the high-speed cutting processing substitution original complete working procedure. The

high speed processing technology besides may apply in the hard mold cavity direct

processing (in particular half precision work and precision work), in EDM aspect and so on

electrode processing, fast type manufacture also obtained the widespread application. The

mass productions practice indicated that, the application high-speed cutting technology may

save in the mold following processing 80% handwork to grind the time approximately,

saves the processing cost expense nearly 30%, the mold face work precision may reach 1 m,

the cutting tool cutting efficiency may enhance one time.

Second,

Second, high

high

high speed

speed

speed milling

milling

milling processing

processing

processing engine

engine

engine bed

bed

The high-speed cutting technology is one of machining technology main development

directions, it along with foundation technology the and so on CNC technology,

microelectronic technology, new material and new structure development but steps a higher

stair. Because the mold processes particular as well as high speed processing technology

own characteristic, (processed engine bed, numerical control system, cutting tool to the

mold high speed processing related technology and the craft system and so on) proposed

processed a higher request compared to the traditional mold.

1. High

High

High stable

stable

stable engine

engine

engine bed

bed

bed strut

strut

strut part

part

The high-speed cutting engine bed lathe bed and so on supports the part to be supposed

to have very well moves, the static rigidity, hot rigidity and best damping characteristic. The

majority of engine beds all use high grade, the high rigidity and Gao Kangzhang the gray

iron took the strut part material, some engine bed companies also increase the high damping

characteristic in the foundation polymer concrete, by increases its vibration-proof and the

thermostability, this not only may guarantee the engine bed precision is stable, also may

prevent when cutting the cutting tool inspires trembles. Uses the enclosed lathe bed design,

the overall casting lathe bed, the symmetrical lathe bed structure and has the densely

covered stiffener and so on also enhances the engine bed stable important measure. Some

engine bed companies' research and development departments in design process, but also

uses the modality analysis and the finite element structure computation and so on, optimized

the structure, stably causes the engine bed strut part to be reliable .

2. Engine

Engine

Engine bed

bed

bed main

main

main axle

axle

The high speed engine bed main axle performance is the realization high-speed cutting

processing important condition. The high-speed cutting engine bed main axle rotational

speed scope is 10000~100000m/Min, the main axle power is bigger than 15kW. Is not

bigger than 0.005mm through the main axle compressed air of or axial play between the

cooling system control hilt and the main axle. Also requests the main axle to have the fast

vertical speed, to assign the performance which the position is fast stops (namely to have

extremely high angle addition and subtraction speed), therefore the high speed main axle

often uses the liquid static pressure bearing type, the air static pressure bearing type, the

thermo-compression nitriding silicon (Si3N4) the ceramic bearing magnetism aerosol

bearing type isostructuralism form. Lubricates uses technology and so on oil gas lubrication,

splash lubrication. The main axle cools uses the main axle interior water cooling generally

or air cooled.

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1英文说明www.elsevier.com/loecvte/jsviwww.elsevier.com/loecvte/jsviwww.elsevier.com/loecvte/jsviwww.elsevier.com/loecvte/jsviMoldMoldMoldMoldhighhighhighhighspeedspeedspeedspeedmillingmillingmillingmillingprocessingprocessingprocessingprocessingtechnologytechnologytechnologytechnologyHnmanHnmanHnmanHnma...

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