Novel lightweight and complete dynamic balancing method and device for dual-axis four-point high-speed press machine

Abstract

The invention relates to a novel lightweight and complete dynamic balancing method and device for a dual-axis four-point high-speed press machine. The method and device comprises a machine frame, a movable beam, a dual-axis four-point crank slider mechanism, an auxiliary connecting rod, an auxiliary sliding block, a counterweight block and an eccentric gear set; the movable beam is installed on the machine frame and can move up and down along a machine frame guide rail to adjust the height of a mold assembly, and a crankshaft of a dual-axis four-point crank slider executing mechanism is installed on the movable beam through a bearing seat; the auxiliary connecting rod, the auxiliary sliding block and the crankshaft also form a crank slider mechanism, and the counterweight block is fixedlyconnected with the crankshaft and rotates at the same angular velocity when the crankshaft works; and a gearwheel of the eccentric gear set is fixedly connected with the crankshaft, rotates at the same angular velocity when the crankshaft works and meshes with an eccentric pinion. According to the method and device, good dynamic balancing effect of the high-speed press machine can be achieved through small mass, and when the quality of a sliding block and an upper die changes, the mass of the counterweight block and the eccentric pinion can be adjusted steplessly to ensure the good dynamic balancing effect.

Description

technical field [0001] The invention belongs to the technical field of high-speed presses, and in particular relates to a new light-weight complete dynamic balancing method and a device thereof for biaxial four-point high-speed presses. Background technique [0002] High-speed presses are widely used in industrial production because of their advantages of automaticity, high efficiency and precision. The number of strokes per minute of the slider of the general-purpose mechanical press generally does not exceed 200rpm, while the number of strokes per minute of the slider of the high-speed press is much higher than that of the general-purpose mechanical press, and some even exceed 1000rpm. At this time, the high-speed press is running The unbalance phenomenon of the machine tool increases significantly, and the vibration of the machine tool caused by the unbalance is also more severe, which will seriously affect the life of the mold and greatly reduce the machining accuracy of...

AI Technical Summary

Problems solved by technology

[0005] (1) The rotating eccentric counterweight installed on the crankshaft can only balance the first-order inertial force of the high-speed press slider, but cannot balance the inertial force of the connecting rod and the second-order and higher-order inertial forces of the slider, so that only partial balance can be achieved. Poor balance;

[0006] (2) The balance method of symmetrical inverted crank connecting rod slider can achieve a complete balance of inertial force, but the mass of the auxiliary slider in this balance method is very large, which causes the weight of the machine to increase, the installation and debugging are inconvenient, and the manufacturing and processing costs are high. Slow dynamic response and increased energy consumption

[0007] (3) Whether it is a rotating eccentric counterweight structure installed on the crankshaft or a symmetrical reverse crank slider structure, when the mass of the slider and the upper mold changes, the mass of the counterweight or the reverse pair slider is difficult to adjust, resulting in The dynamic balance effect drops sharply;

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