JPS6040259B2 - Manufacturing method of rotor slip ring part - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a slip ring portion of a rotor of a rotating machine, etc., which is safe and easy to operate, does not require many man-hours, and has reliable performance.

The conventional manufacturing method for the slip ring part of a rotor is as shown in FIGS. 1 and 2, in which glass cloth and thermosetting resin are coated on the mandrel 1 of the slip ring part, which is press-fitted into the shaft 17 of the rotor 16. After heating and hardening, the insulating part 2 is finished by precisely turning the surface, and the required number of slip rings 3 having lead wire attachment holes 4 are baked iron-plated thereon.

According to this method, it requires skill and a lot of man-hours to wrap the glass cloth around the mandrel 1 while applying the thermosetting resin. If the slip ring 3 is placed over the slip ring 3 after turning, the crimped part of the slip ring 3 and the insulating part 2 will not be displaced uniformly, and the crimped part of the glass cloth with poor adhesion will become uneven. As a result, the leech forming part becomes slack, and as the rotor 16 rotates, the slip ring 3 rotates, causing the lead wire to be cut. In addition, when wrapping the glass cloth around the mandrel 1, the worker initially wears gloves, but while wrapping the glass cloth and applying the thermosetting resin,
Resin adheres to the gloves, making it difficult to work), so there is a risk that the glass fiber powder from the glass cloth may get into the skin of your fingers and cause injury because you have to remove your gloves to work. When turning the back surface, a dust removal device had to be installed to remove the glass fiber powder.

In addition, when manufacturing the slip ring 5 having the lead wire attachment hole 7 by integrally molding it with the phenol resin body 6 as shown in Figs. 3 and 4, in the case of the above-mentioned aged iron method In comparison, it does not require much skill on the part of the operator, and uniform adhesion between the slip ring 5 and the cylinder 6 can be obtained, but the number of stacked slip rings 5 increases each time the dimensions of the slip ring 5 and the cylinder 6 differ. Each rotor requires its own complicated mold, which has the disadvantage that the number of rotors 16 produced is small and, in some cases, expensive. The present invention provides a method for manufacturing a slip ring portion of a rotor, which eliminates the above-mentioned drawbacks, allows the work to be done safely and easily, and provides a product with reliable performance at low cost.

An embodiment of the present invention will be described with reference to the drawings in the case of three slip rings.

In Figures 5, 6 and 7, 8, 8' and 8''
9 is a molded insulation member of the same shape formed so that the slip ring does not come into contact with the mandrel, and 9 is an end face insulation material, both of which are molded with molding material (alkyd premix, phenolic resin, or other thermosetting resin compound). Key grooves 13, 13', 13'', 14 and lead wire attachment holes 15, 15', 15'' are provided, respectively.

Further, the core 11 is provided with a key 12 for positioning the molded insulating members 8, 8', 8'' and the end face insulating material 9, and slip rings 10, 10 are provided on the molded insulating members 8, 8', 8''.
', 10'' are respectively coated with epoxy adhesive (thermosetting adhesive) and bonded together to form the molded insulating member 8 and the slip ring 10, the molded insulating member 8' and the slip ring 10', and the molded insulating member 8''. While applying adhesive to the adhesive surfaces of the slip ring 10'' and end face insulating material 9, insert the keys of each molded insulating part village 8, 8', 8'' into the positioning key 12 of the mandrel 11. Align the grooves 13, 13', 13'' and the keyway 14 of the end face insulating material 9, and insert the lead wire attachment hole 15.
, 15', 15'' are assembled concentrically, and the mandrel 11 is press-fitted onto the shaft 17 of the rotor 16 by heating and curing.

According to the manufacturing method of the present invention, the molding mold only needs to be used for the molded insulating member and the end face insulating material, which reduces the mold cost. Any number of slip rings can be easily manufactured by simply stacking iron-bonded rings while applying adhesive to the adhesive surface. Because of this, there is no slack at all, the work is safe, and there is no need for workers to glue the back of the material, which is very effective in practical use.

[Brief explanation of drawings]

Fig. 1: A side view of the slip ring part of a rotor manufactured by the conventional manufacturing method by sintering, Fig. 2:
...A cross-sectional view taken along line A-A in Fig. 1, Fig. 3...Side view of the slip ring portion of the rotor manufactured as a conventional integral mold, Fig. 4...Fig. BB sectional view in Figure 3, Figure 5... A plan view of the slip ring portion of the rotor manufactured by the manufacturing method according to the present invention, Figure 6...
. . . CC sectional view of FIG. 5, FIG. 7 . . . DD sectional view of FIG. 5. 8, 8', 8''... Molded insulating member, 9...
End insulation material, 10, 10', 10''...Slip ring, 11... Core metal, 12... Key, 13
, 13', 13'', 14...Keyway, 15, 1
5', 15''...LJ-D wire mounting hole, 16...
Rotor, 17...Rotor axis. Hair 1 Figure 2 Figure 3 Figure 4 Blinds Figure 5 Hatred Figure 6 Figure 7

Claims (1)

[Claims] 1 Apply adhesive to a molded insulating member molded so that the slip ring does not come into contact with the core metal, fit the slip ring onto the core metal, apply adhesive to the adhesive surface, and stack the required number of insulating members, A method of manufacturing a slip ring part of a rotor, which comprises applying an adhesive to the end part, attaching an end face insulating material, and curing it by heating.