文献翻译-硬齿面齿轮类减速器.doc

1、外文翻译 Hardened gear reducerHardened gear reducer include all kinds of expansion - gear reducer,the coaxial gear reducer, planetary gear reducer of various types of special gear and various groups of the derivative products, gearcarburizing, quenching, grinding technology, precision grade 47,widely us

2、ed in metallurgy, mining, lifting, petrochemical, building,building materials, light industry and energy industry. Its main features are:1) the main specification parameters (center distance, transmission ratio) the number priority priority number system, and meet the relevant standards.2) the main

3、structure size parameters, the optimization design of gear transmission. Standardization, high level of generalization, about 1500parts, a speed reducer 4500 different capacity, different transmission ratio, different assembly type.3) gear made of high strength alloy steel forging quality. Hardened

4、gearreducer after carburizing, quenching, grinding, precision. Allowablebearing capacity of bearing capacity of old products for more than 3 times. Hardened gear with a special modulation processing, precisiongear hobbing. Design life of 10 years.4) the performance of reducer through bench test and

5、practicalappraisal to achieve the advanced level of similar products in the world80 years. Can replace imported products, can be exported.5) product quality inspection and grading, loading test, reliability test,use and maintenance of related technique and technical specifications.But generally limi

6、ted in:Gearbox high-speed shaft is not higher than 1500r/min;Slow speed gear circle is not higher than 20m/s;Deceleration working environment temperature is 40 45 degrees Celsius -, below 0 degrees Celsius, before the start of the lubricating oil should be preheated.If the utility conditions beyond

7、a limit, and the design or manufacturingunits, a negotiated solution.Selection method:Bearing capacity standard reducer by the mechanical strength and heatbalance two allowable power limit. Therefore the reducer must beaccording to the two power meter and related coefficient to choose.Firstly, accor

8、ding to the mechanical reducer strength permissiblenominal power selection. If the input speed and carrying capacity inthree (15001000750) speed of relative error less than 4%, it should bethe nominal power according to the practical speed reducer selectionat. Then check reducer heat balance allowab

9、le power (the thermal power) if the shaft extension in addition to withstand the torque, but alsobear the axial, radial load, should check the shaft extension factor of safety and service life of bearing. Should also check the peak loadwhen necessary.Particular attention should be paid to the choice

10、 is, in addition to considering load coefficient, but also by the importance of equipmentand the accuracy of load actual size master selection of adequate safety factor.The hardened gear reducer price situation is analyzed briefly.1 gear reducer product prices are fluctuating between 2.56 million /

11、ton, as the single weight, precision, material type, matching pieces ofdifferent level etc. In general, higher requirements of platform weightlight using imported parts or materials and precision, the price upper limit, lower limit of general price should be stated, because it is notserious domestic

12、 market order is not standard and individualproduction enterprises in the production process, the market is flooded with a certain proportion of not in strict accordance with the productionprocess in hard surface for the production of products, its prominent characteristic is the short life, because

13、 the tooth surface withoutgrinding, noise is large, the products to the market low price shocks,some users due to the production process of reducer products is not familiar with, or due to other reasons, it only takes the price as the mainpurchase basis, often leads to the regular manufacturers prod

14、ucts to enter the procurement perspective, to the user also causedunnecessary losses, but also to the illegal manufacturers an opportunity,seriously affecting a mature reducer products market development and growth.The 2 planetary gear reducer and includes many kinds of products,such as low speed he

15、avy planetary gear box, all kinds of special rotaryplanetary gear and planetary transmission device, the general external gear carburized gear grinding, gear quenched and tempered or nitrideon GM products, prices generally in the 36 million / ton, for rotary typeplanetary single table light weight r

16、educer, the table of valuation, the price slightly higher than the former, in general, the planetary gear reducer, the manufacturing and assembly process are more complex,so the price is hardened cylinder gear reducer to be higher. Such asfittings imported bearings, and purchasing high-quality gear steel, the price will be higher.3 price analysis, according to the number of domestic