JP2598403Y2 - Balance testing machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balance testing machine for testing an unbalanced state of a test body.

[0002]

2. Description of the Related Art Heretofore, as a balancing tester for testing an unbalanced state of various test pieces such as a flywheel and a pulley, there is a vertical type. Is attached to the main shaft of the balance testing machine that extends in the vertical direction via an adapter.
This attachment is performed as follows.

[0003] That is, an adapter 7 attached to a rotating main shaft and integrally rotating, as shown in FIG.
The upper end is a frustoconical tapered surface 7a centered on the rotation axis A, and a key 9 for torque transmission is attached to a part of the tapered surface 7a of the adapter 7 so as to correspond to the tapered surface 7a. Test body 8 having tapered inner peripheral surface 8a
a is fitted to the tapered surface 7 a of the adapter 7, and the upper end of the test body 8 is fastened with the nut 10.

In such a state, the main axis of rotation, and therefore,
The adapter 7 and the test piece 8 integrated therewith are rotated around the rotation axis A, and the unbalanced state of the test piece 8 is tested.

[0005]

However, in such a conventional balancing test machine, the nut 10 is removed and the test body 8 is removed from the adapter 7 after the test is completed.
The tapered surface 7a of the adapter 7 and the tapered inner peripheral surface 8a of the test body 8 are completely fitted in such a manner as to bite each other, and therefore, the test body 8 cannot be easily removed from the adapter 7. Conventionally, therefore, the lower end of the test body 8 is hit with a wooden hammer or a lever is inserted between the lower end of the test body 8 and the adapter 7 to give an impact. The test body 8 was removed from the adapter 7.

In order to remove the test piece 8 as described above,
Since it is necessary to hit or apply a strong impact, there is a danger, and there is a possibility that the test body 8 or the balance testing machine may be damaged.

The present invention has been made in view of the above points, and has as its object to provide a balance testing machine that facilitates removal of a test body after a test is completed.

[0008]

In order to achieve the above-mentioned object, the present invention is configured as follows.

That is, the present invention provides an adapter having a tapered peripheral surface which is integrally attached to a rotating main shaft rotatably supported by a vibration base and into which a tapered peripheral surface of a test body fits. In a balancing tester for testing the unbalanced state of the test body, by pressing the test body fitted to the adapter in a direction away from the adapter along the main axis, the test body and A pressing mechanism for releasing the fitting with the adapter is provided.

[0010]

According to the above arrangement, the pressing mechanism is provided for releasing the fitting between the test body and the adapter by pressing the test body along the main axis. By the mechanism, the fitting between the test body and the adapter can be released, and it is not necessary to hit with a hammer or give an impact with a lever as in the conventional example.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a sectional view of a main part of an embodiment of the present invention.

The balance tester 1 of this embodiment is a vertical one-sided balance tester, and includes a cylindrical vibrating gantry 3 supported on both sides by a leaf spring 2 so as to vibrate. A rotating main shaft 5 is rotatably supported inside the gantry 3 via a bearing 4. A pulley 20 is attached to the main spindle 5 for rotation, and is driven to rotate by a motor (not shown).

The flange 5a on the upper end side of the main shaft 5 has a flange 6a on the lower end side of the cylindrical intermediate adapter 6.
A flange 7b of an adapter 7 having a truncated cone-shaped tapered surface 7a is mounted on a flange 6b on the upper end side of the intermediate adapter 6. Therefore, the adapter 7 rotates integrally with the main shaft 5.

On the other hand, the test body 8 to be tested has a tapered inner peripheral surface 8a. The inner peripheral surface 8a is fitted to the tapered surface 7a of the adapter 7 with the key 9 attached. As a result, the specimen 8 is attached to the adapter 7, and the upper end of the specimen 8 is further tightened and fixed by the nut 10. The attachment of the test body 8 to the adapter 7 is the same as in the conventional example.

In the balancing tester 1 of this embodiment, after the test is completed, the adapter 8 is mounted so that the test piece 8 can be easily removed from the adapter 7 fitted with the tapered surface of the test piece 8 biting. A pressing mechanism is provided for releasing the fitting between the test body 8 and the adapter 7 by pressing the test body 8 fitted to the housing 7 along the main shaft 5 in a direction away from the adapter 7.

This pressing mechanism is basically provided slidably in an air cylinder 11 that is driven a predetermined number of times after the test, a pressing rod 12 inserted in the main shaft 5, and an intermediate adapter 6. The piston 13 includes a pressing piston 13 and a pressing ring 14 for pressing the peripheral end of the test body 8 upward by the piston 13.

The lower end of the pressing rod 12 faces the piston rod 11a of the air cylinder 11, and the upper end thereof faces the center of the lower surface of the pressing piston 13 in the intermediate adapter 6. Has a large-diameter flange portion 12a. On the other hand, this pressing rod 12
A large-diameter storage part 15 is formed in the main shaft 5 inserted therein, and the flange part 1 of the pressing rod 12 is provided in the storage part 15.
A coil spring 16 is provided to abut on the rod 2a and urge the rod 12 downward. Therefore, except when the test body 8 is removed from the adapter 7 after the end of the test, the pressing rod 12 is at a position where the flange 12a abuts on the peripheral end of the storage portion 15 formed on the main shaft 5.

The pressing piston 13 that slides upward through the pressing rod 12 that has been pushed upward by the driving of the air cylinder 11 has pressing projections 13a formed at, for example, three locations in the circumferential direction. These pressing projections 13
a is configured to penetrate through the insertion holes 7c formed at three places of the flange portion 7b of the adapter 7, and the pressing ring 14 is placed on these insertion holes 7c.

In the balancing tester 1 having the above configuration, when the test specimen 8 is removed from the state shown in FIG. 1 after the completion of the balancing test, the following procedure is performed.

First, the nut 10 that attaches the test body 8 to the adapter 7 is removed, and an operation switch (not shown) is operated to drive the air cylinder 11 to displace the piston rod 11a upward and to push the piston rod 11a. 12
, And the pressing rod 12 is displaced upward along the main shaft 5 against the urging force of the coil spring 16. As a result, the upper end of the pressing rod 12 is
And presses the piston 13 upward, the pressing projection 13a of the piston 13 presses the pressing ring 14 upward, and the direction in which the test body 8 is separated from the adapter 7 by the pressing ring 14 That is, it is pressed upward.

The fitting operation between the tapered surface 8a of the test piece 8 and the tapered surface 7a of the adapter 7 is released by repeating the pressing operation by the air cylinder 11 a plurality of times, for example, three times. After the specimen 8 has been removed,
The piston rod 11a of the air cylinder 11 also returns downward, and the pressing rod 12 returns to the lower position shown in FIG. 1 due to the urging force of the coil spring 16 and the weight of the pressing ring 14.

As described above, the test body 8 is pressed by the pressing mechanism.
Is pressed along the main shaft 5 to release the fitting between the test piece 8 and the adapter 7. Therefore, as in the conventional example, the test piece 8 is hit by a hammer or given an impact by a lever.
Does not need to be removed, and the specimen 8 can be easily and safely removed without damaging the specimen 8 or the balance tester 1.

[0024]

As described above, according to the present invention, in a balancing test machine for performing a balancing test by fitting a test body having a tapered surface to an adapter having a tapered surface, the adapter is fitted to the adapter. A press mechanism is provided to release the mating between the test specimen and the adapter by pressing the test specimen in the direction away from the adapter along the main axis of rotation, so that the test specimen and the fishing Without damaging the testing machine
The specimen can be easily removed.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an embodiment of the present invention.

FIG. 2 is a diagram showing a state in which a test body is attached to an adapter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Balancing test machine 3 Vibration stand 5 Main shaft 7 Adapter 8 Specimen 11 Air cylinder 12 Press rod 14 Press ring

Claims (1)

(57) [Scope of request for utility model registration] An adapter which is integrally attached to a rotating main shaft rotatably supported by a vibration gantry and has a tapered peripheral surface into which a tapered peripheral surface of a test body fits; In a balance testing machine that tests the unbalanced state of the test body, by pressing the test body fitted to the adapter in a direction away from the adapter along the main axis,
A balancing tester comprising a pressing mechanism for releasing a fitting between a test body and an adapter.