Single-cylinder and double-lock pneumatic vacuum flexible clamp

Abstract

The invention discloses a single-cylinder and double-lock pneumatic vacuum flexible clamp, which comprises a substrate, a plurality of spring support positioning units and pneumatic locking mechanisms for locking the spring support positioning units, wherein the spring support positioning units are arranged on the substrate; each pneumatic locking mechanism is arranged on the substrate and is located between two spring support positioning units; one pneumatic locking mechanism is shared by two spring support positioning units; vacuum adsorption is carried out on a thin-wall part through a chuck and the thin-wall part is firmly locked through the pneumatic locking mechanisms, thereby achieving stable and reliable clamping of a workpiece; and the chuck can be automatically clung to the surface of the workpiece and has adaptability to the curved surface shape. By adopting the clamp, fast clamping and positioning of any curved surface can be achieved, the installation time of the part is effectively shortened, and meanwhile, machining deformation of the thin-wall part is controlled, thereby ensuring the machining quality.

Description

technical field [0001] The invention relates to the technical field of part clamping, in particular to a single-cylinder double-lock pneumatic vacuum flexible clamp. Background technique [0002] In the fields of aviation, aerospace and automobiles, many parts are thin-walled parts with complex curved surfaces. Due to the poor rigidity and easy deformation of thin-walled parts, the processing quality is difficult to guarantee. The commonly used processing methods use special tooling, and the design is consistent with the workpiece surface. The special tooling with the same shape makes the surface of the fixture fit the surface of the workpiece. When the shape of the part changes, the tooling and fixture will change accordingly. For small batch or single-piece processing, the number and types of supporting fixtures are various due to the different shapes of the parts. Therefore, the fixture manufacturing cost is high and the production cycle is long, which cannot meet the act...

AI Technical Summary

Problems solved by technology

[0002] In the fields of aviation, aerospace and automobiles, many parts are thin-walled parts with complex curved surfaces. Due to the poor rigidity and easy deformation of thin-walled parts, the processing quality is difficult to guarantee. The commonly used processing methods use special tooling, and the design is consistent with the workpiece surface. The special tooling with the same shape makes the surface of the fixture fit the surface of the workpiece. When the shape of the part changes, the tooling and fixture will change accordingly. For small batch or single-piece processing, the number and types of supporting fixtures are various due to the different shapes of the parts. Therefore, the fixture manufacturing cost is high and the production cycle is long, which cannot meet the needs of actual production.

[0003] The existing flexible positioning tooling for thin-walled curved surface parts is the most representative TORRESTOOL flexible fixture system launched by M. Torres in Spain. The TORRESTOOL flexible fixture system is based on curved surface multi-point forming technology and adopts a modular array structure. The structure of the support positioning rod is complex, the number of adjustment mechanisms is large, and each adjustment mechanism requires a control motor, and the number of motors is large, which makes the control of the fixture difficult and expensive.

[0004] At present, there are combined flexible fixtures. The combined flexible fixtures include electric flexible multi-point support fixtures and thin-walled manual adjustment fixtures. These fixtures can adjust the support position according to the shape of the parts. The electric adjustment method is complicated in structure and high in cost. Manual adjustment The speed is slow, the positioning accuracy is poor, and special height measuring equipment is required

Images