Array type two-degree-of-freedom adjustable flexible fixture

Abstract

An array type two-degree-of-freedom adjustable flexible clamp relates to a flexible clamp. Including suction cup, rigid positioning element, suction port element, suction cup base, upper pillar, first lower pillar, second lower pillar, stepped bottom plate, square nut block, profile base, positioning screw; the flexible fixture uses profile as base, The single pillar is connected to the profile base through the square nut block and the positioning screw to realize the movement and fixation of the pillar in one direction; the height is adjusted through the transmission thread connection between the upper pillar and the lower pillar of the single pillar; through the replaceable suction cup The component can realize the clamping of complex surfaces; the key points on the three-dimensional curved surface are supported by multiple pillars and rigid positioning elements that can be adjusted in height and position, and the positioning of complex-shaped workpieces is realized; The combination improves the compactness of the fixture structure and the flexibility of the clamping; reduces the cost of the flexible fixture.

Description

technical field [0001] The invention relates to a flexible clamp, in particular to an array type flexible clamp with two degrees of freedom adjustable which can be widely used in the fields of machining and manufacturing, aerospace and the like. Background technique [0002] Metal thin-walled structural parts such as the skin and web on the aircraft body, the back door of the white leather body of the car, the trunk lid, etc., and non-metallic thin-walled structural parts such as plastic tableware and plates, etc. It often has the characteristics of complex shape and easy deformation. For clamping thin-walled parts with complex shapes and various characteristics, the design cycle of special fixtures is long, the inventory of fixtures is large, and it takes up a lot of space, making it difficult to realize flexible production of products. Commonly used fixtures are usually aimed at rigid parts, and it is difficult to deal with thin-walled parts and easy-to-deform parts, espe...

AI Technical Summary

Problems solved by technology

[0005] The main disadvantages of the above two structures are: the first type of fixture has a fixed value for the distance between holes on the modularized foundation platform or the size of the foundation pillow, so the relative position of the pillars or positioning plates installed above it cannot be in the horizontal plane according to the process requirements. Inner continuous adjustment, poor flexibility; the second type of flexible fixture that uses the driving device to adjust and control in three directions, although the flexibility of the column adjustment in the horizontal plane is realized, it is controlled by the structural size and adjustment of the driving device Affected by factors such as the way of cutting, the structure is complex, the compactness is poor, the density of the pillar array is relatively small, it is difficult to apply to workpieces with large curvature changes, the adjustment and control are also complicated, and the cost is relatively high

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