CN2790739Y

CN2790739Y - Mechanical press servo main transmission

Info

Publication number: CN2790739Y
Application number: CN 200520072152
Authority: CN
Inventors: 潘志华; 丁海兰; ***
Original assignee: JIANGSU FULI NUMERICAL CONTROL MACHINE TOOLS CO Ltd
Current assignee: JIANGSU FULI NUMERICAL CONTROL MACHINE TOOLS CO Ltd
Priority date: 2005-05-20
Filing date: 2005-05-20
Publication date: 2006-06-28
Anticipated expiration: 2015-05-20

Abstract

The utility model relates to a servo main transmission device of a mechanical press, which belongs to power devices of the mechanical presses of the technical field of electromechanical integration. The utility model is characterized in that a gear is arranged at the end of a rotary shaft of an AC servo motor, wherein the gear is engaged with a big gear. The utility model uses the characteristics of the AC servo motor controlled by input signals of rapid response, high control precision and stable operation, and the AC servo motor is applied to the mechanical press as a driving source of the mechanical press. Rotational speed has good controllability, constant torque can be output in the range of the rotational speed, and the utility model has the characteristic of good low-speed hammering punching quick return and has the advantages of big speed adjustment range, convenient speed adjustment and rapid response. Stepless adjustable strokes can be achieved, and the disadvantage that friction loss is big when the AC servo motor conveys big force through a leading screw can be overcome. Clutches and brakes on the existing mechanical presses can be saved, and the utility model is suitable for the large-tonnage mechanical presses.

Description

Mechanical press servo main transmission

Technical field

The utility model relates to a kind of mechanical press servo main transmission, belongs to the power set of the punching machine of electromechanical integration technology area.

Background technology

In the punching machine of extensive use at present both at home and abroad, generally adopt common AC asynchronous motor that can not speed governing to drive, motor is connected with flywheel by the V belt transmission.In punching machine, flywheel plays the key effect of storage power, forging instantaneous towards workpiece, mainly release energy, after forging is finished towards work by flywheel, the motor drives flywheel quickens rotation, making it return to original angular speed in forging before next workpiece, thereby store enough energy, is not directly to be supplied with by motor, but mainly supply with by flywheel, so power of electric motor just can reduce greatly.This type of drive is simple, cost is lower, but because Rotary Inertia of Flywheel is very big, AC asynchronous motor rated slip rate is very little in addition, therefore, the rotating speed that is arranged in the rotary system after the flywheel is approximate constant a work period, thereby the transmission system of wanting directly to drive the punching machine that have flywheel by motor speed adjusting realizes that the speed change difficulty is very big.

Development along with Power Electronic Technique, ac variable speed technology has obtained constantly improving and improving, on forcing press, adopt frequency converter that the ac motor stator winding is carried out frequency conversion, transformation control, promptly on forcing press, adopt the associating type of drive of adjustable speed AC asynchronous motor-flywheel, can obtain the following constant torque characteristic of basic rotating speed, the basic above regulating frequency of rotating speed can also obtain constant output characteristic.But because the transmission system of band flywheel mainly relies on flywheel that workpiece deformation institute energy requirement is provided, and frequency control way reduces the steady running speed of flywheel, the energy that this workpiece deformation is required may cause being out of shape required energy shortage, thereby still there is deficiency in industrial practicality owing to reduce.

Summary of the invention

The purpose of this utility model is the deficiency that can't directly drive the transmission system realization speed change of the punching machine that has flywheel by motor speed adjusting that exists at the forcing press that existing AC asynchronous motor drives, frequency control way may cause the required energy shortage of workpiece deformation, both provided and can export constant torque in the range of speeds, rotating speed has a kind of mechanical press servo main transmission of good controllability again.

The purpose of this utility model is achieved through the following technical solutions, a kind of mechanical press servo main transmission, the bent axle that comprises punching machine, bent axle one end connects solid gear wheel, connect solid connecting rod on the bent axle, the slide block that connecting rod one end connects is characterized in that the gear wheel of described device meshes the gear of the AC servomotor rotary shaft end that is provided with.

The utility model utilizes AC servomotor because of being subjected to input signal control and doing response fast, the control accuracy height, characteristic stably turns round, it is applied on the punching machine, drive source as punching machine, rotating speed has good controllability, the constant torque of output in the range of speeds, having good low speed forges towards quickreturn characteristics, the speed governing amplitude is big and convenient, response rapidly, stroke is realized stepless adjustable, can overcome AC servomotor frictional dissipation when leading screw is transmitting big power big not in, and can save clutch and brake on the existing machinery forcing press, the utility model is applicable to the large-tonnage punching machine.

Description of drawings

Fig. 1 is installed in structural representation on the punching machine frame for the utility model;

Among the figure, 1 frame, 2 gear wheels, 3 bent axles, 4 connecting rods, 5 slide blocks, 6 AC servomotors, 7 supports

The specific embodiment

Further specify the utility model in conjunction with the accompanying drawings and embodiments, the utility model is made of gear wheel 2, bent axle 3, connecting rod 4, slide block 5, AC servomotor 6, connect the bar 4 that is connected on the bent axle 3, bent axle 3 two ends place in the supporting base of frame 1, connecting rod 4 connects slide block 5, one end of bent axle 3 is gear wheel 2 fixedly, the gear of gear wheel 2 engagement AC servomotors 6 rotary shaft end, and AC servomotor 6 places on the support 7 that is fixed on the frame 1.

Claims

1, a kind of mechanical press servo main transmission, the bent axle that comprises punching machine, bent axle one end connects solid gear wheel, connect solid connecting rod on the bent axle, the slide block that connecting rod one end connects, it is characterized in that described device is provided with AC servomotor, gears engaged bent axle one end of AC servomotor rotary shaft end connects solid gear wheel.