Three-coordinate double-support arm positioner

Abstract

The invention discloses a three-coordinate double-support arm positioner. According to the positioner, when an X-axis movement mechanism, a Y-axis movement mechanism and a Z-axis movement mechanism wholly work, different products at any position in a three-dimensional space can be accurately positioned; a double-support arm structural form is adopted, so that accurate positioning in a narrow space can be realized, and two key points of different types can be positioned at the same time; the X-axis movement mechanism and the Z-axis movement mechanism of the positioner are provided with an absolute grating bar respectively, and full closed loop control is realized by the reading feedback of the absolute grating bars; and a displacement sensor and a mechanical sensor are arranged on a positioning part at the tail end of the positioner, and can be used for monitoring the spatial position and stress condition of a positioning point of a part relative to the positioning part and feeding back an error generated during assembly to a control system for error compensation to effectively support and position the part of an airplane and improve the assembly accuracy.

Description

technical field [0001] The invention belongs to the field of mechanical design and tooling equipment, and relates to a mechanical device for precise positioning during aircraft assembly, in particular to a three-coordinate double-arm positioner. Background technique [0002] At present, the aircraft assembly positioner is mainly an assembly frame, which is composed of a base, a rigid bracket, a shape clamp and a special auxiliary fixture. This traditional locator adopts a rigid structure and has poor reconfigurability. The assembly mode uses one assembly frame corresponding to the parts of one model, that is, one-to-one mode. The assembly frame has a single function, cannot be adjusted twice, and cannot be adjusted. Insufficient real-time error compensation. [0003] Patent CN101817405A discloses a heavy-duty three-coordinate locator. The locator adopts the structural form of a three-coordinate POGO column, which can realize effective support and fixing of the overall fusel...

AI Technical Summary

Problems solved by technology

[0005] In order to avoid the deficiencies of the existing technology and overcome the problems of weaker flexibility of the locator, poor reconfigurability, and inability to perform error compensation, the present invention proposes a precisely positioned, three-coordinate double-arm locator; its purpose is Realize movement and precise positioning in the three directions of X, Y, and Z; adopt the structure of double arms, which can not only realize precise positioning in a narrow space, but also position different types of key points at the same time; and the positioning piece at the end of the positioner Displacement sensors and mechanical sensors are installed on the top, which can monitor the spatial position and force state of the positioning point of the parts relative to the positioning parts, feed back the errors generated during assembly to the control system, and perform error compensation to achieve effective support and maintenance of aircraft parts. position

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