Method for processing external cable shielding layer of conductive slip ring used for three-axis precision turntable

Abstract

The invention provides a method for processing an external cable shielding layer of a conductive slip ring used for a three-axis precision turntable. The method comprises the following steps: arranging, folding and reversely sleeving a metal wire shielding layer; subjecting same-level signal cables to interconnection and intercommunication; and arranging the reversely-sleeved metal wire shieldinglayer and welding spots. According to the method provided by the invention, the shielding layers of different cables of the same-level signal can be interconnected and intercommunicated to form an integral shielding effect, the processing position of the shielding layer of a single cable is thin and uniform, the welding spots are small, and short circuit caused by the fact that metal wires of theshielding layer pierce a cable core is completely avoided. The cable shielding layer processing method is applied to the three-axis precision turntable; threading in a narrow internal cavity of the turntable is convenient; the problems of shielding and signal communication caused by a shielding layer during processing are solved; all the same-level signals are interconnected and intercommunicated,near-point grounding is achieved; coupling interference caused in a complex electromagnetic environment in the cavity of the turntable is eliminated; the anti-interference capability of the whole line of equipment is improved; and the reliability of a shielding processing link is improved.

Description

technical field

[0001] The invention belongs to the technical field of cable shielding treatment, and in particular relates to a treatment method for an external cable shielding layer of a conductive slip ring for a three-axis precision turntable. Background technique

[0002] The conductive slip ring is placed inside the rotating shaft of the precision turntable, and its lines are laid in the cavity of the turntable. About 500 cables transmit different signals, including strong current, weak current, sensors, encoders, user signals, etc. The power motor is installed, which leads to the complex electromagnetic environment inside the precision turntable, and the signal is easily disturbed during the transmission process. All adopt the design method of shielded cable, and the shielding layer of the shielded cable is a wire mesh layer to eliminate electromagnetic compatibility problems caused by electromagnetic radiation and conduction. However, due to the complexity of the el...

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