外文翻译--机械压力机功能设计及计算

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1、 Mechanical Presses functional design and calculation - Abstarct: Large mechanical press briefing functional design of the work load, the main electrical power transmission and inertia flywheel is fixed, and the application of technology based Komatsu, summed up the simple formula to complete the mo

2、re complex operations, saves time and effort, practical and reliable. Key words Mechanical Presses, work load ,main motor, power Flywheel Closed single large, double-action mechanical press for the successful design of the volume is not one of the important parameters, This is the work for several o

3、f the total, while the main motor, flywheel between certain, Operators are complex. Based on the study Komatsu technology on the basis of press design of work load, Main electrical power and Flywheel determined using a simple formula to complete the more complicated arithmetic. The formula called fo

4、r public 2000kN edge over the slider trip 4001000mm Closed 4:00 single action, double-action or link mechanical press can be applied. Through the different types of Komatsu Press parameters such as the public said, the slider trip itinerary pressure, cushion and the main parameters, such as motor po

5、wer analysis, and more complicated formula basically the same as or similar to, Therefore, the formula saves time and effort, practical and reliable. For the following table (all is the introduction of Komatsu products). Parameters E4S600 E4S1000 E4D600+400 E4D800+500 Public kN 6000 10000 Inside sli

6、der 6000+4000 Inside slider 8000+5000 Pressure itinerary mm 13 13 13 6 13 6 Largest measure J 5108.1 5107.3 5106.2 5104 Slider itinerary mm 600 1000 940 660 940 690 Trips 1min 13and20 10 16 10 and 15 10 and 15 Pneumatic power kN 1000 1500 1000 1500 Motor Power kW AC75/50 AC132 AC90/60 AC132/88 Note

7、: * The complicated formula for the calculation results, other basic calculation of the same or similar. Design of the press, in general, are based on the users requirements for design. For the function and parameters, some done directly by the user, then according to the value. 1 Gong press for the

8、 calculation E=Ph PBhB PDS/KD (1) Where : E Press required the biggest work load, J P said the public power (even within the slider to move the public said Li), N； h pressure on the trip (double-action of the pressure inside slider trip), m (h=0.0130.015m general admission, or the requirements by th

9、e user)； PB slider outside of the public said, N； hB slider outside pressure journeys m (hB=0.006m general admission, or the requirements by the user)； Were cushion, N； PD cushion capacity coefficient (general admission KD=6)； S slider trip (double-action program for the inside slider), m Single-act

10、ion design press time, according to PB=0, hB=0 calculation； without air-cushioned by the Press PD=P/6 calculation； Blanking, trimming, forging presses can be used by PD=0 calculation. I plant design and production of 8000kN Closed 4:00 single-action multi-link mechanical press as an example. Li said

11、 P=8000kN public pressure h=13mm trip, the itinerary S=800mm slider, PD=2000kN cushion edge, trips 1018min-1. In E=80001030.013 20001030.8/6=3.7105 （ J） 2 PH main electrical power to determine the (1) AC motor : )(1.145 t o u rofn u m b e r m a x i m u m T h e WEP H (2) DC Motor: )(45 t o u rofn u m

12、 b e r m a x im u m T h e WEP H 8000kN press using the DC motor speed control, it may : )(1048.14518107.3 55 WPH Motor check samples, the main election to 158kW motor power 3 Flywheel GD2 Determination 222716 kgmKN EGD K 2Sk S2k (5) Where : GD2 Flywheel, kgm2 (including clutch follower. General admi

13、ssion GD2 15%)； N Flywheel revolutions, r/min K Flywheel energy release rate， %； Sk Changes in the rate of speed (motor slippery slip) ， %。 Single Action Press ,intake Sk=10.5% 15%， K=0.199 0.278 Double-action Press, intake Sk=15.5% 20%， K=0.286 0.36 Sk more than 20%, press cycle time, the DC motor speed control or wound motor, from Sk 20.5% 30.5%， K=0.368 0.517 Variable-speed motor-driven wheels, if the low-speed, high-speed all for the same work load, required increase the speed slow rate of change, while reducing per-minute work trips.