Online fault detection system based on spindle box of numerical control gear milling machine and detection method thereof

Abstract

The invention discloses an online fault detection system based on a spindle box of a numerical control gear milling machine and a detection method thereof. The system comprises a mechanical detection module and an oil detection module, and is characterized in that the mechanical detection module comprises multiple vibration sensing modules which are arranged at the positions of an oil outlet and an oil inlet of the spindle box correspondingly, the vibration sensing modules are tightly attached to the box wall of the spindle box, and the connecting lines between the vibration sensing modules on the two sides are parallel to the axis of a spindle; and the oil detection module comprises multiple temperature sensing modules arranged near a driving shaft and a driven shaft correspondingly and multiple flow velocity detection modules arranged at the positions of the oil outlet and the oil inlet of the spindle box correspondingly, and the directions of the multiple flow velocity detection modules are the same and are opposite to the flow direction of oil in the spindle box. According to the system, all positions in the spindle box are comprehensively detected so that the fault position and the fault reason can be quickly positioned, and therefore an efficient fault maintenance mode can be conveniently determined.

Description

Technical field [0001] The present invention relates to the field of spindle box devices or fault detection, and more particularly to an online fault detection system based on a CNC mill spindle box and a detection method thereof. Background technique [0002] The spindle box is an important part of the machine, which is used to arrange the machine tool working spindle and its transmission parts and corresponding additional mechanisms. The spindle box is a complex transmission component including spindle assemblies, commutation mechanisms, transmission mechanisms, brakes, manipulation mechanisms, and lubricants. Its main role is to support the spindle and rotate it, realize the main shaft start, brake, shift and commutation and other functions, the spindle box adopts a multi-stage gear transmission, through a certain transmission system, the transmission gear in each position in the spindle box and The transmission shaft, finally transmits the motion to the spindle, enabling the ...

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Problems solved by technology

[0003] The common faults of the spindle box include mechanical mechanism failure and oil volume imbalance failure, mainly including: brake mechanism failure, valve core stuck caused by long-term uncleaned solenoid valve, brake friction plate wear, surface too smooth, too thin or already Fractured, the brake pressure is too low, the friction between the friction plates is too small; the automatic shifting of the headstock spindle is not smooth, resulting in impact: the time relay that controls the power-off and power-on of the headstock spindle automatic shifting electromagnet is out of order; the screw is loose and the machine tool The coupling on the coordinate axis is loose; there is

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