1、关于减速器的外文 Wheel gears spreading to move is a the most wide kind of the application spreads to move a form in the modern machine.Its main advantage BE: 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 th
2、e of two stalks；Power and speed scope applies are wide； spreads to move an efficiency high, =0.92-0.98； work is dependable, service life long； Outline size outside the is small, structure tightly packed.The wheel gear constituted to；from wheel gear, stalk, bearings and box body decelerates a machine
3、, 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 modern machine. Local deceleration machine much with the wheel gear spread to move, the pole spread to move f
4、or lord, but widespread exist power and weight ratio small, or spread to move ratio big but the machine efficiency lead a low problem.There are also many weaknesses on material quality and craft level moreover, the especially large deceleration machines problem is more outstanding, the service life
5、isnt long.The 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 long.But it spreads to move a form to still take sett
6、ling stalk wheel gear to spread to move as lord, physical volume and weight problem, dont 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 develops
7、.Decelerating 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 numbers.Be close to ten several in the last yearses, control a technical development because of the
8、 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, mak
9、ing 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 parts.CNC tool machine and the craft technical development, pushed a machine to spread to move structure to fly to develop soon.Be spreading to
10、 move the electronics control, liquid in the system design to press to spread to move, wheel gear, take the mixture of chain to spread to move, will become become soon a box to design in excellent turn to spread to move a combination of direction.The academics that is in spread move the design cross
11、es, 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-gea
12、r 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 tran
13、sfer 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
14、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 deforma
15、tion 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 str
16、ength 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 general
17、ly not at present be calculated, but the measures to be taken to strengthen the tooths 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
18、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
19、 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 driv
20、e, 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 dri
21、ve, 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
22、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 numbe
23、r 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 kinds of reducer. Redu
24、cer 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
25、 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 t
26、he state machine (from the motives) of the load, and is usually divided into three categories: - uniform load; - Medium impact load; - 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 - ran
27、ging 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 forc
28、e 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 num
29、ber 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
30、in mind that do not exceed the rated torque reducer. 2) The speed at the same time reducing the load inertia, the reduction of inertia than the square of speed. We can look at General Electric has a value of inertia. There is a general helical gear reducer reducer (including parallel shaft helical g
31、ear reducer, worm gear reducer, bevel gear reducer, etc.), planetary gear reducer, cycloid reducer, worm gear reducer, planetary-type friction mechanical CVT machine and so on. And we have a common type of speed reducer: 1) worm gear reducer is a main feature of the reverse self-locking function, ca
32、n have a larger reduction ratio, input shaft and output shaft axis is not the same, nor in the same plane . But in general larger, the transmission efficiency is not high, the accuracy is not high. 2) harmonic of the harmonic drive speed reducer is to use flexible components of the elastic deformati
33、on controlled to convey movement and momentum, and volume not very high accuracy, but the drawback is the limited life Flexspline, the impact of intolerance, rigidity and metal pieces compared to poor. Enter the speed can not be too high. 3) planetary reducer compare the advantage of compact structu
34、re, the return gap small, high precision, long life, rated output torque can do a lot. However, the price a little expensive. Mechanical transmission is the use of mechanical power transmission and motion transmission. Mechanical transmission in mechanical engineering in a wide range of applications
35、, there are a variety of forms, can be divided into two categories: by mechanical friction between the transmission of power and movement of the friction drive, including belt drive, rope drive and friction wheel drive and so on. Easy to achieve continuously variable friction transmission, and most
36、of them can adapt to the larger axis of the transmission distance of occasions, been able to play a buffer containing the spin and the role of the protection gear, but generally can not be used for high-power transmission of the occasion, there is no guarantee that an accurate the transmission ratio
37、. items by active engagement with the follower, or through transmission of power or middleware meshing engagement campaign drive, including the gear drive, chain drive, screw drive and harmonic drive and so on. Meshing can be used for high-power transmission of the occasions, the exact transmission
38、ratio, but the general requirements for the manufacture of high precision and accuracy of the installation. The form of mechanical transmission is divided into: friction drive, chain drive, gear drive, belt drive, under vortex turbine drive, ratchet drive, the crankshaft connecting rod drive, pneuma
39、tic drive, hydraulic transmission (hydraulic plane), universal joint transmission,steel transmission (the most widely elevator) drive coupling, spline drive. Wheel gears spreading to move is a the most wide kind of the application spreads to move a form in the modern machine.Its main advantage BE: s
40、preads 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 applies are wide； spreads to move an efficiency high, =0.92-0.98； work is dependable, service life long； Outline
41、size outside the is small, structure tightly packed.The 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 ap
42、plication is extremely extensive in the modern machine. 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 problem.There are also ma
43、ny weaknesses on material quality and craft level moreover, the especially large deceleration machines problem is more outstanding, the service life isnt long.The deceleration machine of abroad, with Germany, Denmark and Japan be placed in to lead a position, occupying advantage in the material and
44、the manufacturing craft specially, decelerating the machine work credibility like, service life long.But it spreads to move a form to still take settling stalk wheel gear to spread to move as lord, physical volume and weight problem, dont also resolve likeThe direction which decelerates a machine to
45、 is the facing big power and spread to move ratio, small physical volume, high machine efficiency and service life to grow greatly nowadays develops.Decelerating the connecting of machine and electric motor body structure is also the form which expands strongly, and have already produced various str
46、ucture forms and various products of power model numbers.Be 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 th
47、e 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 ba
48、sic parts.CNC tool machine and the craft technical development, pushed a machine to spread to move structure to fly to develop soon.Be 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 to move, will beco
49、me become soon a box to design in excellent turn to spread to move a combination of direction.The 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 efficienc
