A parallel configuration body-in-white conveying and positioning device for flexible assembly of automobiles

Abstract

The invention relates to a parallel-structure white body conveying and positioning device for flexibly assembling automobiles. The parallel-structure white body conveying and positioning device comprises fixture positioning units, parallel mechanism conveying supporting units and a transporting moving unit, and is characterized in that each parallel mechanism conveying supporting unit is a modular unit and comprises a fixed platform, a movable platform and three branched chains, each fixed platform is connected with the corresponding movable platform by the corresponding branched chains and is in the shape of a regular triangular pyramid, each branched chain comprises a first universal joint, a branched chain connecting rod, a second universal joint, a slider and a slider driving motor, one end of each branched chain connecting rod is connected with the corresponding movable platform by the corresponding first universal joint, the ends of the branched chain connecting rods are uniformly distributed on the circumferences of the movable platforms, the other end of each branched chain connecting rod is connected with the corresponding slider by the corresponding second universal joint, the sliders can be respectively driven by the slider driving motors to move along the pyramid edges of the fixed platforms, and the fixed platform of each parallel mechanism conveying supporting unit is fixed to the transporting moving unit.

Description

technical field [0001] The invention relates to the field of automobile production and assembly, in particular to a parallel configuration body-in-white conveying and positioning device for flexible assembly of automobiles. Background technique [0002] In recent years, the fierce market competition has forced the renewal of automobile products to accelerate. In order to seize business opportunities in the competition and take the lead, the cycle of new models launched by automobile manufacturers in various countries is gradually shortening. The individualized demand for products continues to increase, the technical life and market life of automotive products continue to shorten, and the large-scale production model characterized by a single variety, large batches, continuous and lack of flexibility is increasingly unsuitable for current and future market needs. It is favored by the industry for its multi-variety and small-batch flexible production methods with both scale an...

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Problems solved by technology

[0004] Flexible conveying and positioning equipment has become an indispensable equipment for the automation equipment production line of the automobile industry. However, at present, there is a lack of independent research and development capabilities for flexible assembly equipment in China, and there is a lack of systematic research on the integrated application technology of large-scale flexible assembly platforms. In addition, there is a lack of supporting equipment. Built a flexible assembly line

Most of the automobile equipment production lines in my country are still using semi-automatic conveying and positioning equipment. Most of the conveying and positioning robots used by a few enterprises are from foreign equipment manufacturers. The introduction of these equipments is not only expensive, but also high in maintenance costs. Once the equipment fails , the maintenance cycle is longer, and what is more, it may cause the entire production line to stop production during the maintenance period, resulting in huge waste of resources and property losses for the enterprise. Therefore, the localization of flexible conveying positioning equipment is realized and the research level of flexible conveying positioning equipment is improved. , Breaking the technology monopoly of foreign manufacturers has become an urgent problem to be solved, which is of great significance to my country's auto equipment industry and the auto industry

[0005] Currently existing mobile positioning equipment, in terms of their topological structure, are all open-loop configurations; in terms of the stiffness, accuracy of the equipment itself and the connection form with the parts to be assembled, the movement accuracy of the POGO column docking platform is low , poor rigidity, poor posture adjustment ability, few connection points with the parts to be assembled, easy to cause deformation of the parts, but low cost; the multi-point array docking platform uses adsorption lattices to connect with the parts to be assembled to achieve good support, but the cost is high and Poor mobility; self-guided trolley-type docking platform adopts special fixtures to connect with parts to be assembled. Strong mobility, but low movement accuracy, weak attitude adjustment ability and poor rigidity

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