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龙虾的英文外文文献翻译--齿轮的特点和作用

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2021-01-28 02:30
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龙虾的英文-子弹头列车

2021年1月28日发(作者:jpc)


本科毕业设计(论文)通过答辩



毕业设计


(


论文


)


外文资料 翻译





学院(系)






机械工程学院

























机械工程及自动化























外文出处




Distributed Network Research




Center and Its Application in


Agile Manufacturing




























件:< /p>


1.


外文资料翻译译文;


2.

< p>
外文原文





指导教师评语:







该外文 翻译语言流畅通顺,较准确完整地翻译了原文,所


翻译的齿轮的特点和作用的文章,与毕 业设计的课题相关。达


到了本科毕业外文翻译的要求。





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请将该封面与附件装订成册。







本科毕业设计(论文)通过答辩



附件


1


:外文原文




Gear features and functions



Abstract


Gears


in


the


mechanical


equipment


to


achieve


an


integral,


it


is


a


lot


of superior performance. The appropriate gear and reasonable use of


transmission


gears


can


improve


equipment


performance


but


also


could


prolong gear life.


Keywords



Gear, characteristics, fault, application



Wheel


gear's


spreading


to


move


is


a


the


most


wide


kind


of


the


application


spreads


to


move


a


form


in


the


modern



main


advantage BE


1 spreads to move to settle, work than in a moment steady, spread


to


move


accurate


credibility,


can


deliver


space


arbitrarily


sport


and


the


motive of the of two stalks



Power and speed scope


2 applies are wide




3 spreads to move an efficiency high,


η


=0.92-0.98




4 work is dependable, service life long




5 Outline size outside the is small, structure tightly


wheel gear constituted to°;




from wheel gear, stalk, bearings and box


body decelerates a machine, useding for prime mover and work machine or


performance


organization


of,


have


already


matched


to


turn


soon


and


deliver


a function of turning , the application is extremely extensive in the



本科毕业设计(论文)通过答辩



modern machine.


6 Local


deceleration


machine


much


with


the


wheel


gear


spread


to


move,


the pole spread to move for lord, but widespread exist power and weight


ratio small, or spread


to move ratio


big but the


machine efficiency lead


a


low



are


also


many


weaknesses


on


material


quality


and


craft


level moreover, the especially large deceleration machine's problem is


more outstanding, the service life isn't deceleration machine


of


abroad,


with


Germany,


Denmark


and


Japan


be


placed


in


to


lead


a


position,


occupying


advantage


in


the


material


and


the


manufacturing


craft


specially,


decelerating


the


machine


work


credibility


like,


service


life



it


spreads to move a form to still take settling stalk wheel gear to spread


to move as lord, physical volume and weight problem, don't also resolve


like


The


direction


which


decelerates


a


machine


to


is


the


facing


big


power


and


spread


to


move


ratio,


small


physical


volume,


high


machine


efficiency


and


service


life


to


grow


greatly


nowadays


rating


the


connecting


of


machine


and


electric


motor


body


structure


is


also


the


form


which


expands


strongly,


and


have


already


produced


various


structure


forms


and various products of power model close to ten several in


the last yearses, control a technical development because of the modern


calculator technique and the number, make the machine process accuracy,


process


an


efficiency


to


raise


consumedly,


pushed


a


machine


to


spread


the


diversification of movable property article thus, the mold piece of the


whole machine kit turns, standardizing, and shape design the art turn,


making


product


more


fine,


the


beauty


turns.


Become


a


set


a


machine


material


In 21 centuries medium, the wheel gear is still a machine to spread


a


dynamic


basic



tool


machine


and


the


craft


technical


development,


pushed a machine to spread to move structure to fly to develop


spreading to move the electronics control, liquid in the system design


to


press


to


spread


to


move,


wheel


gear,


take


the


mixture


of


chain


to


spread



本科毕业设计(论文)通过答辩



to


move,


will


become


become


soon


a


box


to


design


in


excellent


turn


to


spread


to move a combination of academics that is in spread move


the


design


crosses,


will


become


new


spread


a


movable


property


article


the


important


trend


of


the


development.


Is


the


use


of


gear


teeth


of


two


gears


meshing


each


other


transmission


of


mechanical


power


and


motion


transmission.


According


to


the


relative


position


of


the


gear


axis


parallel


to axis of cylindrical sub-gear drive, bevel gear axis intersect and


cross-axis helical drive gear. Compact structure, high efficiency, long


life


and


so


on.


Gear


refers


to


the


main,


driven


wheel


gear


direct,


movement


and power transmission devices. Of all the mechanical transmission, the


most


widely


used


gear


can


be


used


to


transfer


between


any


two


axes


of


motion


and power.


The characteristics of gear is: a smooth gear transmission, the


transmission ratio accurate, reliable, high efficiency, long life, the


use of power, speed and size range. For example, transmission of power


from small to almost 100,000 kilowatts; speeds of up to 300m / s; gear


diameter


from


a


few


millimeters


to


more


than


20


meters.


However,


the


need


for


specialized


gear


manufacturing


equipment,


the


meshing


noise


transmission.


Gear


failure


for


the


five


forms,


should


be


the


appropriate


design


criteria


established.


However,


tooth


wear,


plastic


deformation


and


so on, as they have not been widely established and well-established


engineering practice to use the calculation method and design data, so


the


gear


drive


design,


it


is


usually


only


on


the


guarantee


that


the


tooth


root


bending


fatigue


strength


and


tooth


surface


to


ensure


contact


fatigue


strength


calculation


of


the


two


criteria.


For


high-power


high-speed


gear


transmission (such as aero-engine main drive, drive turbine-generator


unit,


etc.),


but


also


ensure


the


tooth


surface


by


the


anti-bonding


capacity calculation guidelines. As for the ability to resist other


failure,


although


generally


not


at


present


be


calculated,


but


the


measures



本科毕业设计(论文)通过答辩



to be taken to strengthen the tooth's ability to resist these failures.


1 closed gear transmission Informed by practice, in the closed gear


transmission, usually


to ensure that the main tooth contact fatigue


strength.


Tooth


surface


hardness


for


high


strength


and


low


core- tooth


gear


(such as 20,20 Cr steel by quenching after carburizing gears) or a more


brittle material of the gear, usually at the tooth root bending fatigue


strength to ensure that the main. If the two gears are hardened and the


tooth


surface


hardness


as


high


as,


then


as


the


case


may


be.


Larger


transmission


power,


such


as


the


input


power


of


75kW


closed


more


than


gear,


heat, easy to lead to bad lubrication and gear damage, such as glue, in


order


to


control


the


temperature


rise,


but


also


for


calculation


of


cooling


capacity.


2 open-gear


transmission


Open


(semi-open)


gear


drive,


according


to


tooth


surface


is


supposed


to


be


based


to


ensure


that


anti-wear


and


anti-fracture


ability Dedendum two criteria are calculated, but as mentioned earlier,


on the tooth surface abrasion resistance of the method of calculating


capacity is not perfect yet, so off- type (semi-open) gear drive, the


current only to ensure that the tooth root bending fatigue strength as


a design criteria. In order to extend the open (semi-open) the life of


gear, the specific needs of visualization to be obtained by increasing


the appropriate modulus. Reducer is the prime mover with an independent


closed between the work gear to reduce speed and to increase torque. In


addition,


in


some


occasions,


there


are


devices


used


for


growth,


and


known


as the accelerator. When the motor output shaft speed input from the


initiative,


the


drive


pinion


rotation,


and


the


drive


pinion


gear


movement,


and


a


large


number


of


teeth


than


the


gear


pinion,


and


the


speed


ratio


gear


pinion


slow,


then


the


shaft


gear


(


output


shaft)


output,


which


has


played


the


role


of


output


slowdown.


Reducer


of


the


type,


variety,


many


types


have


been formulated for the trip (the country) the subject of more than 40



本科毕业设计(论文)通过答辩



kinds


of


reducer.


Reducer


is


based


on


the


type


of


gear


used,


tooth


profile


curve


divided;


reducer


species


is


based


on


the


use


of


the


different


needs


of the reducer structure; the type of reducer in the basic structure of


the


tooth


surface,


based


on


hardness,


transmission


level,


the


shaft


type,


assembly


type,


installation


type,


connection


type


and


other


factors


designed reducer different characteristics. Reducer connected with the


work load of the state of more complex machines, a great impact on the


speed reducer is a reducer selection and calculation of an important


factor in the load reducer that is the work of the state machine (from


the motives) of the load, and is usually divided into three categories:


1 uniform


load;2 Medium


impact


load;


3 strong


impact


load.


Mechanical


aspects of the slowdown in the devices typically are:


1 for


the


speed


is


relatively


small,


less


torque


on


the


gear


drive


system


- ranging from a pair of gear teeth (speed) or a range of gear teeth


( variable speed). Large number of teeth for which the driving wheel, a


large number of teeth used for the driven wheel.


2 for


speed


is


relatively


small,


a


larger


torque


on


the


gear


drive


system


- a screw and a gear. Screw driving force with which to make decisions.


If the gear teeth for N, while rotating around each gear, screw on the


ring must be rotating N.


3 for the speed ratio, and torque transmission on a large turbine vice


-


a


rod


and


a


vortex


turbine.


Used


to


decide


under


which


vortex


dynamics.


If the turbine for the number of teeth N, while rotating around each


turbine,


vortex


must


be


rotating


N


pole


lap.


Air


power


plant


is


typically


used for turbine Vice reducer.


Its role is to:


1 deceleration


at


the


same


time


increase


the


output


torque,


torque


output


by


motor


output


by


the


ratio


of


reduction


ratio,


but


bearing


in


mind


that


do not exceed the rated torque reducer.


龙虾的英文-子弹头列车


龙虾的英文-子弹头列车


龙虾的英文-子弹头列车


龙虾的英文-子弹头列车


龙虾的英文-子弹头列车


龙虾的英文-子弹头列车


龙虾的英文-子弹头列车


龙虾的英文-子弹头列车



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