Armature core polishing device for electric tool

Abstract

The invention discloses an armature iron core polishing device for an electric tool, and relates to the field of armature iron core polishing devices.The armature iron core polishing device comprises a transmission rod, a fixing assembly is arranged on the transmission rod, and a polishing assembly used for polishing an armature iron core is arranged on the fixing assembly. The armature core only needs to be clamped and fixed on one side distributed in the length direction of the transmission rod, the surface of the armature core can be polished by a fixed thickness through the polishing and grinding plate, and when protrusions exist on the surface of the armature core and are difficult to grind, the polishing and grinding plate can abut against the protrusions on the armature core to compress a first spring for avoiding; therefore, the protrusion position is slowly polished and ground off, and the phenomenon that the protrusion is polished off at a time and a pit which is difficult to repair is formed on the surface of the armature iron core is avoided.

Description

technical field [0001] The invention relates to the field of armature iron core polishing devices, in particular to an armature iron core polishing device for electric tools. Background technique [0002] The armature is the key and pivotal part in the process of the mutual conversion of mechanical energy and electrical energy in the motor. For a generator, it is a component that generates electromotive force, such as the rotor in a DC generator, and a stator in an alternator; for a motor, it is a component that generates electromagnetic force, such as the rotor in a DC motor. [0003] In the prior art, the armature iron core is usually polished with a hard polishing tool, such as a hard grinding brush. It is difficult to control the polishing accuracy during polishing, and because the hard polishing tool is hard on the armature. Keep a fixed distance between the armature and the armature during polishing, so that when the surface of the armature is difficult to polish, it ...

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Problems solved by technology

[0003] In the prior art, the armature iron core is usually polished with a hard polishing tool, such as a hard grinding brush. It is difficult to control the polishing accuracy during polishing, and because the hard polishing tool is hard on the armature. Keep a fixed distance between the armature and the armature during polishing, so that when the surface of the armature is difficult to polish, it is easy to cause serious wear and damage to the polishing tool, reducing the service life of the polishing tool, and if there is a small bump on the surface of the armature When lifting, if the grinding tool is directly polished or scraped at one time, the surface of the armature is likely to be dug out to form a concave state when a small piece of protrusion falls off. When the surface of the armature forms a depression, it is not easy to repair, and it is usually discarded. , reducing the polishing yield

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