High-speed precision punching machine

Abstract

The invention relates to a dieing machine, which comprises a pedestal and an abutment body. A crankshaft transmission part is provided with a fly wheel, a clutch brake assembly, a dynamic balance piece, and one end of a connecting rod; the other end of the connecting rod is fixed on a slide block, the slide block is connected with a block adjusting and guiding device; a dynamic balance piece is provided with eccentric lantern rings which are arranged at two ends of a crankshaft; and a double connecting rob, a bearing and a pin which are connected with the eccentric lantern rings are connectedwith the dynamic balance piece to form the eccentric lantern rings, so that eccentric force generated by the motion of the crankshaft is offset, and left and right swing and deformation are preventedsimultaneously. When processing different products, the dieing machine needs to change moulds and adjust the height of the slide block; and after the height of the slide is adjusted, a locking oil cylinder locks the slide lock so as to ensure that the position of the arranged mould does not change and the machining accuracy does not change. The slide block adopts a guide ring guiding structure soas to break a four guide pillar structure which is used for multiple years in punching machine industry. The over-positioning of the prior four guide pillar is replaced by the freely-jointed positioning of a guide sleeve, so that the assembling error can be solved through free displacement.

Description

technical field [0001] The invention relates to a high-speed punching machine for mechanical processing equipment, in particular to a high-speed precision punching machine. Background technique [0002] Patent application number 200810025932.6 "A high-speed precision CNC punching machine", which uses a ball-joint linkage mechanism at the junction of the connecting rod and the slider. Due to the high machining accuracy of the ball-joint linkage and the difficulty in adjusting the ball-joint clearance, it will cause high-speed The bottom dead center of the precision punching machine is unstable, the punching precision is low, and the work efficiency is not ideal. In addition, it uses a single-link mechanism in the dynamic balance, which is connected to the crankshaft through the bearing bush. Due to the large contact area of ​​the bearing bush and the large friction, the lubrication is insufficient, so poor lubrication is prone to heat generation, locking, and serious wear. T...

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Problems solved by technology

[0002] Patent application number 200810025932.6 "A high-speed precision CNC punching machine", which uses a ball-joint linkage mechanism at the junction of the connecting rod and the slider. Due to the high machining accuracy of the ball-joint linkage and the difficulty in adjusting the ball-joint clearance, it will cause high-speed The bottom dead center of the precision punching machine is unstable, the punching precision is low, and the work efficiency is not ideal

In addition, it uses a single-link mechanism in the dynamic balance, which is connected to the crankshaft through the bearing bush. Due to the large contact area of ​​the bearing bush and the large friction, the lubrication is insufficient, so poor lubrication is prone to heat generation, locking, and serious wear. The force cannot balance the eccentric force generated by the crankshaft movement, which makes the punching machine easy to swing left and right during the stamping process

In addition, in this patent application, the up and down movement of the slider still adopts the four guide pillars of the conventional structure, and there is a problem of over-positioning. At the same time, the machining of the guide pillars, assembly tolerances, and eccentric forces of the crankshaft movement are all prone to deformation, which will eventually lead to deformation. Affect the machining accuracy of the workpiece

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