Magnet yoke dovetail-shaped broach

Abstract

The invention discloses a magnet yoke dovetail-shaped broach comprising a long guide rail, a dovetail-shaped broach body, a height cushion block and broach blades. The dovetail-shaped broach body is slidably mounted on the long guide rail through a rolling core pressing strip. A rolling core pressing plate is arranged on the rolling core pressing strip and located on an inner groove part in the lower surface of the dovetail-shaped broach body. Multiple layers of broach blades are mounted on the left and right sides of the upper surface of the dovetail-shaped broach body correspondingly. The broach blades on the left side and the broach blades on the right side are symmetrically arranged. The broach blades on the left side include front parts and rear parts which are mounted in a front end broach blade groove and a rear end broach blade groove correspondingly, and the front end broach blade groove is deeper than the rear end broach blade groove. The height cushion block is mounted in the middle area of the upper surface of the dovetail-shaped broach body and connected with the dovetail-shaped broach body through hexagon socket cap screws A. The magnet yoke dovetail-shaped broach has the beneficial effects that using is convenient, cutting is stable, the quality of the machining surface is good, and working efficiency is high.

Description

technical field

[0001] The invention relates to the field of hydroelectric power generation, in particular to a dovetail broach used for processing generator sets to install rotor yoke laminations. Background technique

[0002] The hydro-generator rotor is formed by stacking sector-shaped yoke punches in a staggered manner layer by layer. During the stacking process, pins are used for positioning, and the layers are staggered by a certain pole distance. There will be slight misalignment and burrs between each adjacent lamination above and below. In order to make better contact between the yoke laminations and the yoke keys, and to obtain better heat dissipation performance of the rotor, tools must be used to clean burrs and dislocations. At present, the commonly used deburring tool in China is the forming push knife. The method of use is to knock down a section of the extension rod installed behind the forming push knife from the top of the yoke to achieve the purpose of ...

Images