Symmetric automatic electrode grinding device with grinding displacement controllability and grinding angle adjustability

Abstract

The invention discloses a symmetric automatic electrode grinding device with grinding displacement controllability and grinding angle adjustability. The symmetric automatic electrode grinding device with grinding displacement controllability and grinding angle adjustability comprises a closed shell consisting of a left shell and a right shell, wherein main body parts of functional mechanisms for electrode cutting and grinding, cutting displacement control, grinding angle adjustment and the like are arranged in the closed shell. An electrode cutting and grinding mechanism drives a combined cutting tool to work in a revolution and rotation mode through different combination modes of a gear, a gear ring and the like. A cutting displacement control mechanism converts the rotating power of a stepping motor into micro-distance linear motion of cutting displacement by utilizing a positive and negative threaded shaft. A grinding angle adjusting mechanism is used for compensating deflection of the electrode working surface caused by welding deflection deformation and the like of an electrode holder machine arm. According to the symmetric automatic electrode grinding device with grinding displacement controllability and grinding angle adjustability provided by the invention, through the multi-edge combined cutting tool, the revolution and rotation grinding principle of the multi-edge combined cutting tool, and the functional characteristics such as a fixed-displacement grinding mode and grinding angle adjustment without external force, the remarkable positive effects can be achieved in the aspects of prolonging the service life of the cutting tool, reducing unnecessary electrode cutting, improving the welding spot quality, reducing the spot welding process cost and the like.

Description

technical field [0001] The invention belongs to the technical field of automatic electrode grinding, and relates to the process equipment for spot welding electrode grinding in the resistance spot welding process. More specifically, the invention relates to various automatic welding tongs or fixed The invention relates to special technical equipment for automatic grinding of the electrode working end of a spot welding machine, in particular to a symmetrical electrode automatic grinder with controllable grinding displacement and adjustable grinding angle. Background technique [0002] During the continuous spot welding process, under the cyclical effect of high temperature and high pressure and other harsh workloads, the diameter and composition of the electrode working surface, the contact area with the workpiece surface, the contact resistance and the contact thermal resistance, etc. all increase with the number of solder joints. Constantly changing, a series of changes dyn...

AI Technical Summary

Problems solved by technology

(3) Considering the influence of robot repeat positioning accuracy, in order to remove the metal to be scraped at the axis of the electrode, the length of the cutting edge must pass through the center of rotation of the cutting tool in design, and the cutting edge beyond the center of rotation must withstand harsh conditions such as hard extrusion during the scraping process. In this case, it is easy to cause the cutting edge to become blunt or chipped rapidly.

⑷During spot welding, under the action of electrode pressure, the electrode handle will inevitably produce a certain amount of deflection deformation, and the electrode working surface will produce an angle deflection with the deflection deformation, which prolongs the working surface of the electrode and the workpiece surface in a state of poor contact. The duration of the spot welding operation will have a negative impact on the service life of the electrode and the quality of the solder joint; none of the known automatic electrode grinders has the corresponding grinding angle compensation capability

[0008] 3. Strictly speaking, the grinding principle of the known technology automatic electrode grinder is only applicable to the electrode grinding on the linear motion fixed spot welding machine

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