A self-adaptive sheet metal positioning mechanism

Abstract

The invention relates to a self-adaptive plate positioning mechanism and belongs to the technical field of machine tools. A positioning blocking edge against which a plate abuts is arranged on the edge of one side of a plate bearing platform of the positioning mechanism. The edge of the side, adjacent to the positioning blocking edge, of the plate bearing platform is provided with a cleat frame, the plane where the cleat frame is located is parallel to the top face of the plate bearing platform, the corner of the cleat frame is connected with a cleat frame hinge shaft perpendicular to the top face of the plate bearing platform, and the lower end of the cleat frame hinge shaft is hinged to a cleat frame drive block. The two ends of the cleat frame are each provide with a cleat frame roller shaft with the axis perpendicular to the top face of the plate bearing platform, and the cleat frame roller shafts are each provided with a cleat frame roller. The cleat frame drive block is supported on a guide rail X1 and can horizontally move along the guide rail X1, and the guide rail X1 is fixed to the edge of the side, adjacent to the positioning blocking edge, of the plate bearing platform. The two edges of the plate bearing platform are provided with a crank X and a crank Y respectively. The positioning mechanism can reliably position a special-shaped plate.

Description

technical field [0001] The invention relates to a machine tool, in particular to an adaptive plate positioning mechanism, which belongs to the technical field of machine tools. Background technique [0002] Sheet metal parts must be precisely positioned before punching, laser cutting, and bending. The traditional sheet material positioning mechanism includes a sheet material carrying platform, on which a plurality of rolling steel balls are evenly distributed to reduce the friction force when the sheet material moves, and the two sides of the sheet material carrying platform perpendicular to each other are respectively equipped with a The positioning rib against which the edge of the sheet material is placed. After the sheet material is placed on the sheet material carrying platform, it is pushed towards the positioning rib until the edge of the sheet material abuts against the positioning rib, so that the sheet material is positioned. [0003] The traditional sheet metal p...

AI Technical Summary

Problems solved by technology

[0003] The traditional sheet metal positioning mechanism has the following disadvantages: 1. It must rely on right-angled edges for positioning. If the sheet metal parts are of any shape, stable positioning cannot be achieved

2. When the size and shape of sheet metal parts change, the positioning device must be readjusted and set, which leads to the automatic production line must be shut down when processing different parts, seriously affecting production efficiency; 3. If figure 1 As shown, if a certain corner of the sheet metal part first touches the positioning rib 2 (the positioning finger can move), there will be a friction force f between the positioning rib and the positioning finger and the sheet, and it is easy to act on the plate. The line of action of the resultant force of the material produces a self-locking phenomenon within the friction angle, causing the sheet to be stuck and unable to slide along the positioning rib and positioning finger, which also makes the positioning of the sheet fail

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