Press

Abstract

The invention relates to a press machine which comprises a main shaft, two eccentric blocks, a driver, a first flywheel, a second flywheel, a first clutch and a second clutch. The first flywheel and the first clutch are arranged at one side of the main shaft, the second flywheel and the second clutch are arranged at the other side of the main shaft, the driver drives the two flywheels to rotate at the same time, the two flywheels drive the main shaft to rotate by the action of the two clutches, and the main shaft is provided with the two eccentric blocks and drives a slide block to move up and down by the action of the two eccentric blocks, thereby an upper die of a press machine die which is installed on the bottom plane of the slide block is driven to move up and down in a reciprocating way. The invention has the advantages that the press machine utilizes the driver and drives one main shaft at the same time to cause torque of the two flywheels acted on both ends of the main shaft to act on the two eccentric blocks of the main shaft, and the two eccentric blocks cannot generate the phase delay phenomenon, thereby both ends of the slide block simultaneously ascend and descend, the motion precision, the lower dead center precision, the guide precision and the precision of a machined workpiece of the slide block are enhanced, and meanwhile, the service life of the press machine and the service life of the die are prolonged to reduce unnecessary wear.

Description

technical field [0001] The invention relates to a press, in particular to a press with two motors driving the main shaft. Background technique [0002] Existing presses see figure 2 , generally includes: a main shaft, two eccentric blocks, a flywheel, a clutch, and a motor. The flywheel, clutch and motor are located on one side of the main shaft. The motor drives the flywheel, which drives the main shaft to rotate through the clutch, and the main shaft passes through two eccentric blocks The action drives the slider to move up and down, so that when the main shaft rotates, the distance between the point where the clutch acts on the main shaft and the point where the force is applied at the end of the press close to the flywheel is smaller than the distance between this point and the point where the force is applied away from the end of the flywheel. [0003] For this type of press driven by a motor, since the main shaft is an elastic body, the torque of the flywheel acts on...

AI Technical Summary

Problems solved by technology

[0006] The F1 and F2 forces generated by the guide rail increase the wear of the guide rail, which reduces the guiding accuracy and affects the accuracy of the workpiece. The tilt of the slider makes the press bear unbalanced load, which affects other moving parts and the service life of the press and mold.

Due to the inclination of the slider, the friction on the guide rail becomes larger, causing damage to the press and the mold, and also reduces the accuracy of the product

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