Bending machine wallboard proportional deformation compensation device

Abstract

The invention relates to a bending machine wallboard proportional deformation compensation device, and relates to the field of bending machine equipment. The compensation device comprises wall plateson two sides of a bending machine, upper beams, lower beams, grating rulers, C-shaped frames, balance bodies, balance rolling wheels, balance body hinge seats, pressure reduction blocks and springs, wherein the C-shaped frames of the same structure are arranged on the outer sides of the wall plates on two sides, the balancing bodies are arranged right above the upper planes of the C-shaped frameson the two sides, one ends of the balance bodies are hinged to balance body hinge seats, the other ends of the balance bodies are connected with vertical hinged rods, universal joint shafts are connected to the upper portions of the hinged rods, the universal joint shafts are connected with horizontal cross rods, the cross rods are fixedly connected with sliding heads of the grating rulers, sliding grooves are formed in positions, between the balance body hinge seats and the springs, of the balance bodies, and the balance rolling wheels are nested in the sliding grooves and can roll along thehorizontal upper planes of the C-shaped frames. According to the bending machine wallboard proportional deformation compensation device, the structure is simple, measurement errors caused by deformation of the wall plates on two sides in the bending process can be eliminated to the maximum degree, so that the bending precision of a workpiece can be improved.

Description

Technical field [0001] The invention relates to the field of bending machine equipment, in particular to a proportional deformation compensation device for a wall panel of a bending machine. Background technique [0002] In the field of sheet metal forming, a large number of CNC bending machines are currently used. The CNC bending machine presses the sheet with the upper die mounted on the upper beam relative to the lower die mounted on the worktable to bend the sheet into a design angle. The upper beam is installed on the left and right wall panels of the frame and moves up and down through the guide rails. A key issue in the design and manufacture of CNC bending machines is the synchronization accuracy of the upper beam, that is, how to ensure the parallelism between the lower plane of the upper beam and the work surface. That is, the difference between the distance between each point on the lower plane of the upper beam and the work surface meets the accuracy standard (0.1 / 100...

AI Technical Summary

Problems solved by technology

The upper beam is installed on the left and right wall panels of the frame and moves up and down through the guide rails. A key issue in the design and manufacture of CNC bending machines is the synchronization accuracy of the upper beam, that is, how to ensure the parallelism between the lower plane of the upper beam and the worktable. That is to say, the difference between each point on the lower plane of the upper beam and the worktable meets the accuracy standard (0.1 / 1000). The most typical and unavoidable problem is that the wall panels on both sides are carried out in the main cylinder and compensation cylinder during the bending process. The deformation under this pair of reaction forces produces a "mouth opening" effect, that is, the wall panels on both sides produce slight deformation in the vertical direction, and the upper half of the wall panels on both sides of the bending machine frame deforms relatively large, and the maximum deformation should be Located at the C-shaped throat of the wall panels on both sides of the frame, the grating scale used to measure the stroke of the upper beam is directly fixed on the side wall plate. The deformation of the "open mouth" effect will cause the deviation of the feedback data of the grating scale. The machining accuracy required by the bending machine is high. How to eliminate the "opening" effect error caused by deformation during the bending process to the greatest extent is a difficult problem in the current research on improving the machining accuracy of the bending machine.

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