Numerical control right-angle plate shearing machine

Abstract

The invention relates to a numerical control right-angle plate shearing machine. The numerical control right-angle plate shearing machine comprises a machine body (1) and an upper knife carrier (2). At least four driving mechanisms used for driving the upper knife carrier (2) to make vertical motion are arranged above the upper knife carrier (2), and the resultant moment of longitudinal component force applied to the upper knife carrier (2) by all the driving mechanisms is zero. According to the numerical control right-angle plate shearing machine, two servo motors are used for controlling four force bearing points to operate precisely and synchronously, the lateral force generated in the shearing process is not completely borne by a ball linear guide rail on the side face of the upper knife carrier any more, meanwhile, three driving points are further placed over shearing loads, most of the shearing loads can be borne, the tilting moment generated at the center of the upper knife carrier by the shearing loads is basically offset, the influence of stress deformation of the ball linear guide rail due to working loads in operating of the upper knife carrier is greatly reduced, operation is more steady, and shearing precision is also improved; meanwhile, due to the fact that all transmission structures are in a rolling friction mode, energy loss is lower.

Description

technical field [0001] The invention relates to a plate shearing machine, in particular to a four-point pressure servo main transmission mechanism of a numerically controlled right-angle plate shearing machine. Background technique [0002] The right-angle shearing machine is a machine tool that has two blades that are at right angles to each other and can cut the sheet metal at right angles. The CNC right-angle shearing machine can be combined with a CNC punching machine to form a CNC punching and shearing compound machine, which can complete the punching and shearing processes of the plate at the same time. It is a high-efficiency flexible production line. [0003] The main transmission structure of the CNC right-angle shearing machine mainly has the following forms. One is the hydraulic type, which mainly includes a hydraulic pump station. The hydraulic pump station is connected to the hydraulic cylinder through the valve group and the oil pipe. The cylinder body of the h...

AI Technical Summary

Problems solved by technology

Its obvious disadvantages are: the device needs to be equipped with a hydraulic oil cooling system, and the leakage of hydraulic oil and the treatment of waste oil will cause certain environmental pollution. In addition, when working, the oil pump in the hydraulic pump station is continuously working, which will produce A large amount of heat energy is lost, and the shearing machine also consumes electricity when it is not cutting, and will also generate a large amount of energy consumption

Its obvious disadvantage is that in this device, the motor is always in working condition, and the energy consumption is relatively high.

However, when the right-angle shear is performing right-angle cutting, the knife holder will generate relatively large lateral forces in two directions, which will cause the knife holder to have a tendency to flip in two directions during the cutting process, and this single-point ball head The traditional structure cannot overcome this trend, and all lateral forces are borne by the vertical guide rail behind the tool holder

When the tool holder cuts sheets of different thicknesses or different strengths, different lateral forces will be generated, and the guide rail will also be deformed to varying degrees, which will affect the cutting accuracy in two directions.

In order to avoid excessive lateral force, the maximum cutting length of this structure machine tool will also be limited

For the same reason, the above two structures also have similar problems. During the shearing process, the lateral force in a certain direction will be borne by the guide rail, and the final shearing accuracy will be affected by the deformation of the guide rail.

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