Spraying mechanism based on four-degree-of-freedom spraying module

Abstract

The invention relates to a spraying mechanism based on a four-degree-of-freedom spraying module and belongs to the field of machine manufacturing. The mechanism comprises a base, a gantry rack, a movable platform and a spraying work module, wherein the gantry rack is fixedly arranged on the base; the movable platform can realize translation on a guide rail along the base; the spraying work module comprises two spraying modules which have the same structure and can independently realize four-degree-of-freedom motions; the two spraying modules are symmetrically mounted on the gantry rack respectively. Each spraying module comprises a plane five-pair mechanism and two retraction mechanisms to form a space hybrid mechanism; a nozzle at the tail end of the mechanism is driven by four servo motors to move to realize two movable degrees of freedom and two rotary degrees of freedom. The motions of the moveable platform and the spraying work module are combined so that the spraying mechanism can realize the spraying work of the three movable degrees of freedom and the two rotary degrees of freedom. The spraying mechanism has structural symmetry, high sensitivity and high rigidity, and is easy to manufacture and convenient to control; the modularization is easy to realize.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing, in particular to a five-degree-of-freedom spraying mechanism based on a four-degree-of-freedom spraying module. Background technique [0002] The fairing is an important part of the launch vehicle. According to the different missions, each type of launch vehicle has one or more shapes of the fairing. The fairing should meet a very important heat protection function during the design process, that is, the satellite is not affected by aerodynamic heating during the operation of the launch vehicle; when the launch vehicle is in the firing state, the temperature inside the fairing can be controlled , Humidity is adjusted to ensure that the satellite is not affected by low temperature and environment. At present, there are mainly two methods for the heat protection design of the fairing: skinning and spraying heat insulation layer. The skin method is not flexible to change the thickness of th...

AI Technical Summary

Problems solved by technology

However, most of the traditional spraying equipment mechanisms adopt the manipulator-type series structure, which is limited by the existing research level on the series structure, and it is difficult to meet the requirements of the fairing spraying equipment

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