Deflection adaptive compensation type mechanical servo numerical control bending machine

Abstract

Disclosed is a deflection adaptive compensation type mechanical servo numerical control bending machine. The deflection adaptive compensation type mechanical servo numerical control bending machine is simple in structure, saving in energy, environmentally friendly, easy to assemble, and high in accuracy. The bending machine comprises a machine body, a sliding block, a working table and a deflection compensation device, wherein the deflection compensation device is connected to the sliding block and comprises a compensation beam, a pair of servo motors, a pair of driving arms, a long connecting rod, a small connecting rod and a swinging arm, and two lower end angles of the compensation beam are both hinged to the top edge of the sliding block. According to the deflection adaptive compensation type mechanical servo numerical control bending machine, component force generated from the transmission of bending load force inside a connecting rod assembly is used as compensation force through the deflection compensation device, on one hand, an independent power source is saved, on the other hand, the compensation force is in proportion to the action force of the servo motor and can be adjusted automatically according to the load, and then adaptive compensation of deflection of different working loads can be achieved.

Description

technical field [0001] The invention relates to a bending machine, in particular to a deflection adaptive compensation mechanical servo numerical control bending machine. Background technique [0002] When the CNC bending machine bends the workpiece, the middle part of the slider of the bending machine produces upward elastic deformation, while the middle part of the workbench produces downward elastic deformation, which makes the bending part appear deflection deformation, which affects the bending part. Forming angle. Specifically, if Figure 12-15 As shown, in the large-tonnage bending machine, due to the rigidity of the equipment itself, the phenomenon of uneven straightness and angle of the bending part of the workpiece 14 often occurs (the creases at both ends of the workpiece are deep, and the middle part of the workpiece is due to The reason for the deformation of the slider or the table is that the crease is too shallow), so that it cannot effectively meet the proc...

AI Technical Summary

Problems solved by technology

[0002] When the CNC bending machine bends the workpiece, the middle part of the slider of the bending machine produces upward elastic deformation, while the middle part of the workbench produces downward elastic deformation, which makes the bending part appear deflection deformation, which affects the bending part. Forming angle

Specifically, if Figure 12-15 As shown, in the large-tonnage bending machine, due to the rigidity of the equipment itself, the phenomenon of uneven straightness and angle of the bending part of the workpiece 14 often occurs (the creases at both ends of the workpiece are deep, and the middle part of the workpiece is due to The reason for the deformation of the slider or the worktable is that the crease is too shallow), so that it cannot effectively meet the processing requirements of the workpiece

[0003] Most of the prior art adopts hydraulic compensation methods: 1), the hydraulic cylinder is used as the power source to provide the bending force, which has the disadvantages of pollution, poor precision control and high cost; 2), in order to achieve Synchronization, it is usually necessary to set a grating scale at both ends of the slider as the feedback of the movement displacement, which is expensive, poor adaptability to the working environment, high cost, and poor synchronization control accuracy; 3) The non-bending downward movement of the slider mainly depends on heavy, slow

[0004] In the prior art, the power source needs to be compensated separately, which increases the cost; at the same time, the scope of application is small and the use effect is poor. It can only compensate the slider or workbench according to the established compensation curve under full load. Once the working pressure is changed, it will Since the established compensation curve on the bending machine cannot be changed, the workpiece will be deflected and deformed again; at the same time, it cannot be effectively applied to the processing conditions of partial load or half load

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