Large-scale hydro-generator rotor connecting sheet punching tool

Abstract

The invention relates to a large-scale hydro-generator rotor connecting sheet punching tool. The large-scale hydro-generator rotor connecting sheet punching tool is characterized by comprising an upper pressing plate, a lower pressing plate and fastening components, wherein the fastening component is connected with the upper pressing plate and the lower pressing plate; screwed holes through which fasteners pass and preset holes for processing are formed on the upper pressing plate; the hollow distance between the preset holes is required to be consistent with the pitch of the connected sheet which is punched; a preset opening of a connecting sheet dome is accommodated in the center of the upper pressing plate; screwed holes and preset holes which correspond to those of the upper pressing plate are formed on the lower pressing plate; and the fastening components are arranged in the corresponding screwed holes. The large-scale hydro-generator rotor connecting sheet punching tool has the advantages of accurate position, high concentricity and no deformation of holes drilled on the rotor connecting sheet, no popup of the connecting sheet, simpleness in operation, cost saving, accurate data, time saving, labor saving, high efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of manufacturing hydraulic generator rotor connecting pieces, in particular to a punching tool for large hydraulic generator rotor connecting pieces. Background technique [0002] The hydro-generator rotor is an important part of the hydro-generator. Its structure is that several magnetic poles are evenly hung on the outer diameter circumference of the rotor bracket and the lead wires of each magnetic pole are connected to each other to form a rotor. One of the connections between several magnetic poles of the rotor is to use connecting pieces to connect the damping rings of each magnetic pole to each other so that the rotor magnetic poles form a whole. [0003] The connecting piece mentioned above is made of several soft copper sheets with a thickness of 0.3mm, and the two ends are pressure-welded to form a whole, and then use a drilling machine to drill 4 through holes with a size of Φ on the connecting pi...

AI Technical Summary

Problems solved by technology

[0003] The connecting piece mentioned above is made of several soft copper sheets with a thickness of 0.3mm, and the two ends are pressure-welded to form a whole, and then use a drilling machine to drill 4 through holes with a size of Φ on the connecting piece and the damping ring on the rotor pole. The holes at both ends are connected together. Since the material of copper is relatively soft and it is made of several sheets stacked and welded at both ends to form a whole, and there is no positioning pin hole, it is difficult to position the drill bit on the connecting piece when drilling, and the drill bit is easy to slip. At this time, when the drill is positioned, it is easy to deviate the position of the hole from the center position of the hole given by the design, and the hole will be deviated. Since the position of the hole of the connecting piece is close to the edge of the connecting piece, the hole may be pierced. In this case, the connecting piece will be scrapped

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