JPS6263236A - Rotor - Google Patents

Abstract

PURPOSE:To reduce a deviation between a weight position and a correction plane and to achieve smooth rotation by burying balance weights in a plurality of through holes formed on the base of a rotor case body. CONSTITUTION:A plurality of through holes 6 are disposed at equal spaces on the outer periphery of the end portion of the base 3a of a rotor case body, centering round a shaft 1 or a hub 2. Suitable through holes 6 are selected, and a suitable quantity of a balancing weight member like clayey adhesives 7 is embedded in the holes to adhere thereto. A deviation delta<2> between the embedded position of the adhesives 7 and a correction plane can be reduced to achieve smooth rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a rotating body. More specifically, the present invention relates to a configuration capable of correcting the dynamic balance of a rotating body.

(B) Prior Art When adjusting the balance of a rotating body that is relatively long in the radial direction, it is common to perform two-sided corrections, such as α and β, as shown in FIG.

In order to maintain the rotational balance of the rotating body R, which includes a shaft 1 which is rotatably fitted to a hub 2 which is fitted to the approximate center of the bottom surface 3a of the main body of the cylindrical rotor case 3, a balance tester is used to maintain rotational balance. A dynamic balance test is carried out to measure the unbalance, and based on the results, balance weights are attached to appropriate locations to balance the unbalance. In the rotating body R shown in FIG. 5, balance ways 4a and 4b are provided at the corners between the bottom surface 3a of the rotor case 3 and the annular wall 3b, and on the inside of the annular wall 3b located symmetrically to the corners, respectively. maintains a dynamic balance.

(c) The problem to be solved by the invention is that in the above-mentioned conventional balancing maintenance configuration,
Example rotor case 3 of hub 2 on the inner wall of rotor case 3
When the balance weight 4a is provided at the corner of the
Since there is a deviation in the position, errors are likely to occur in the position setting. On the other hand, if the balance weight 5 is fixed to the outside of the rotor case 3 main body 3a in order to reduce the deviation from the front of the body, when the rotating body rotates at high speed, the balance weight 5 may fall off due to the centrifugal force. There were problems such as scattering.

(d) Means and operation for solving the problems Therefore, the present invention aims to overcome the defects of the conventional example. A plurality of through holes 6 are provided as a through hole, and a balancing weight member such as a clay adhesive 7 is embedded and adhered to one of these through holes to adjust the balance.

(E) Embodiment FIGS. 1 and 2 show an embodiment of the present invention. The same reference numerals as those shown in the conventional example explained in FIG. 5 indicate the same members, and the details thereof will be omitted. In FIG. 2, a plurality of through holes 6 are arranged on the bottom surface 3a of the rotor case body around the shaft 1 or the hub 2 at equal distances around the entire circumference of the end thereof. Using a balance tester, a dynamic balance test is carried out to measure the unbalance, and based on the results, an appropriate through hole 6 is selected in order to balance the unbalance. A balancing weight of suitable size is embedded into the rotor case body from the bottom surface 3a toward the bottom surface 3a, and then the adhesive 7 is applied to the rotor case body.
A sealing member 8 may be attached from direction B on the opposite side to the side where the adhesive 7 is embedded to prevent the adhesive 7 from coming off. As the sealing member 8, a tape-shaped member or a spacer-shaped member is used. By using this sealing member, it is possible to easily embed and adhere the adhesive from the direction A of the bottom surface 3a of the rotor case main body, and to reduce noise when the rotating body rotates at high speed.

In the above configuration, the deviation δ2 between the adhesive 7 embedding position and the first correction surface can be kept small, which is useful for achieving smooth rotation and preventing the balance weight from coming off and scattering due to centrifugal force.

Further, FIGS. 3 and 4 illustrate another embodiment. A half cut hole 9 is provided in place of the through hole 6 from the A direction of the main body bottom surface 3a of the rotor case, and a balancing weight member is embedded and attached in this half cut hole 9 from the A direction. In this configuration,
There is no need to use a sealing member for the balancing member, such as the clay adhesive.

(F) Effects of the Invention In the present invention, dynamic balance correction can be carried out extremely easily, the deviation between the mounting position of the balancing weight member and the correction surface can be reduced, and the rotation of the rotating body can be smoothed, and the overall performance can be improved. It has the effect of measuring improvement.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a route according to an embodiment of the present invention. FIG. 2 is a plan view of FIG. 1 viewed in the direction of arrow A. FIG. 3 is a cross-sectional view of another embodiment of the route corresponding to FIG. 1. FIG. 4 is a plan view corresponding to FIG. 2. FIG. 5 is a cross-sectional view of a conventional route. α is the first correction surface, δ1 is the deviation, δ2 is the deviation, l is the shaft, 2 is the hub, 3 is the rotor case, 3a is the bottom of the main body, 3
b is an annular wall, 6 is a through hole, 7 is an adhesive, 8 is a sealing member, and 9 is a half-cut hole. Patent Applicant Copal Electronics Co., Ltd. Agent Patent Attorney Sakae Kobayashi Figures 1 and 2 A

Claims (1)

[Claims] 1. A plurality of through holes are arranged at equal distances around the shaft around the entire circumference of the bottom end of the rotor case that rotatably supports the shaft, and any one of these through holes A rotating body with a balance weight component embedded and attached. 2. The rotating body according to claim 1, wherein a clay adhesive is used as a balance weight member embedded in the through hole, and a sealing member for preventing separation of the adhesive is provided in the through hole. . 3. The rotating body according to claim 1, wherein a plurality of half-cut holes are arranged at equal intervals around the shaft around the entire circumference of the bottom end of the rotor case main body.