JPH0716986Y2 - Dynamic balance tester - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a dynamic balance tester for measuring an unbalance amount of a self-driven work.

B. Conventional Technology For performing a dynamic balance test of a self-driving work including a drive device such as a motor and a rotating body rotated by the drive device, the work is mounted on a dynamic balance tester. After that, the rotating body is rotated by the drive device, and the unbalance amount is detected from the unbalanced force of the workpiece generated during the rotation.

C. Problems to be Solved by the Invention However, in the past, when the above work was attached to the tester, it was tightened by hand using bolts and nuts.
There was a problem that it took time.

A technical problem of the present invention is to allow a self-moving work and a driving work to be attached to a dynamic balance testing machine with one touch.

D. Means for Solving the Problems A dynamic balance testing machine according to the present invention is a clamp position for clamping between a work receiver connected to the dynamic balance testing machine and a self-driven work support part. And a clamp lever that is rotated between unclamping positions for unclamping, an elastic body that urges the clamp lever toward the workpiece receiving side, and a protrusion that protrudes within the rotation locus of the clamp lever to rotate from the unclamping position to the clamping position. The lever is lifted against the elastic body by engaging with the lever, and the protrusion member that releases the engagement with the lever at the clamp position is provided,
The work is held by the force of the elastic body between the lever at the clamp position and the work receiver.

E. Action When the clamp lever is rotated from the unclamp position to the clamp position, the protruding member engages with the lever, which lifts the lever against the elastic body. After that, when the lever further rotates, the engagement with the lever is released at the clamp position, so that the force of the elastic body holds the work between the lever and the work receiver (mounted on the dynamic balance tester). .

F. Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 shows a jig used in a dynamic balance testing machine according to the present invention, (a) is a front view and (b) is a sectional view taken along line bb. The work 20 is not shown in FIG.

The work receiver 1 is fixed to the vibrating frame 51, which is attached to a dynamic balance tester (not shown) via a leaf spring, by bolts 31. Three slide bearings 2 (FIG. 1 (b) are fitted to the work receiver 1 at equal angular intervals, and support shafts 3 therethrough slidably pass through. One end of the support shaft 3 The spring seat 4 is fixed by a nut 5, and the spring seat 4
A spring 6 is provided between the sliding bearing 2 and the slide bearing 2. At the other end of the support shaft 3, there are three clamp levers 7e fixed to the workpiece (hereinafter, abbreviated as levers) 7 at the nut NT.
Installed by. These levers 7 are
While being made rotatable between the clamp position shown by the solid line and the unclamp position shown by the two-dot chain line in FIG.
It is urged in the direction A in the figure integrally with the support shaft 3 by the urging force of the spring 6.

2 (a) is a perspective view of the lever 7, FIG. 2 (b),
(C) and (d) are the bb line, cc line, and d of (a), respectively.
It is the sectional view seen from the -d line. A handle 9 is attached to one end of the lever 7 in the longitudinal direction via a joint 8, tapered portions 7a and 7b are formed at both corners, and a recess 7f is formed on the bottom surface. Furthermore, at the other end of the lever 7,
Tapered portions 7c and 7d are formed at both corners, respectively.

On the front surface 1a of the work receiver 1, screw rods 10 are provided so as to project in the rotation loci of the three levers 7, and nuts 11 are screwed to the tips thereof. When the lever 7 is in the unclamp position, the upper surface of the nut 11 and the tapered portions 7c and 7d have the same height. Furthermore, 3 is provided on the front surface 1a of the work receiver 1.
Plungers 12 and 13 are provided so as to correspond to the two levers 7, and these plungers 12 and 13 are urged in the direction B shown by the urging force of a spring (not shown). Then, when the lever 7 is in the clamp position, as shown in FIG.
As shown in FIG. 7, the recess 7f and the plunger 12 are engaged with each other to hold the lever 7 in this position, and when in the unclamp position, the recess 7f and the plunger 13 are engaged with each other to hold the lever 7 in this position. It

Reference numeral 20 denotes a motor section 21 having a built-in motor, a fan 22 driven by the motor, and a cover for covering the fan 22.
It is a self-driven work consisting of 23 and
A supporting portion 21a is provided on the circumferential surface of the motor 21, and a positioning portion 21b is provided on the one end surface of the motor portion 21 so as to project.

Next, a procedure for mounting the work 20 on the testing machine jig (connected to the dynamic balance testing machine) configured as described above will be described.

The head of the bolt 31 for fixing the work receiver 1 to the vibrating frame 51 also serves as a positioning member for the work 20, and the three levers 7 are in the unclamp position (position indicated by the chain double-dashed line) in the motor. The work 20 is positioned and set so that the positioning part 21b of the part 21 is housed between the three positioning members 31. At this time, one surface of the support portion 21a is in contact with the front surface 1a of the work receiver 1. Next, when the handle 9 is operated to rotate the lever 7 toward the clamp position (the position indicated by the solid line), the recess 7f of the lever 7 and the plunger 13 are disengaged, and then the taper portion 7c is engaged with the nut 11. As a result, the lever 7 is lifted in the B direction in FIG. 1 (b) against the biasing force of the spring 6. This makes lever 7
7e per work is higher than the upper surface of the support member 21a of the work 20.

After that, the lever 7 rotates while its bottom surface slides on the nut 11, and when the clamp position is reached, the engagement between the bottom surface of the lever 7 and the nut 11 is released. It descends in the direction of A due to the force, and the work 20
The support portion 21a is clamped between the work 7e and the front surface 1a of the work receiver 1. Also, the lowering of the lever 7 causes the concave portion 7e.
And the plunger 12 are engaged with each other to hold the lever 7 in that position. The above operation is performed for the other two levers 7 as well, whereby the work 20 is held on the jig. Then, the motor is driven to rotate the fan 22 to perform a dynamic balance test, and the unbalance amount is detected from the unbalanced force of the work generated during the rotation of the fan.

When the work 20 is removed after the test, the handle 9 is operated to rotate the lever 7 in the clamp position toward the unclamp position. As a result, the tapered portion 7d is
Engage with 11, the lever 7 is lifted in the B direction, then
When the engagement between the lever 7 and the nut 11 is released, the lever 7 is lowered in the A direction by the urging force of the spring 6. After that,
When the lever 7 rotates further, the taper portion 7b moves to the plunger 13
When the plunger 13 retreats in the direction A to reach the unclamp position by engaging with, the position of the recess 7f and the position of the plunger 13 match, so that the plunger 13 projects and engages with the recess 7f.
This holds the lever 7 in this position.

If the tester jig as described above is used, the work 20 can be mounted on the dynamic balance tester with one touch by only manipulating the inner 9 and without any trouble.

In the configuration of the above-described embodiment, the screw rod 10 and the nut 11 constitute a protruding member, and the spring 6 constitutes an elastic body.

The shape of the work receiver 1, the lever 7, or the work 20 is not limited to the embodiment.

G. Effect of the Invention Since the present invention is configured as described above, the work can be mounted on the tester body with one touch without the need for using bolts and nuts as in the conventional case.

[Brief description of drawings]

FIG. 1 (a) is a front view of a jig used in a dynamic balance tester according to the present invention, FIG. 1 (b) is a sectional view taken along the line bb, and FIG. 2 (a) is a perspective view showing the structure of a lever. Fig. 2 (b)-
(D) is sectional drawing seen from the bb line, cc line, and dd line of (a), respectively. 1: Work holder, 6: Spring 7: Clamp lever, 10: Screw rod 11: Nut, 20: Self-driven work

Claims (1)

[Scope of utility model registration request] 1. A clamp which is rotated between a work clamp connected to a main body of a dynamic balance tester and a clamp position for unclamping a support part of a self-driven work and an unclamp position for unclamping the support. A lever and an elastic body for urging the clamp lever toward the work receiving side,
The lever is lifted against the elastic body by engaging with the lever that is projected into the rotation locus of the clamp lever and rotates from the unclamp position to the clamp position, and engages with the lever at the clamp position. A dynamic balance equipped with a self-driven work dynamic balance test jig, which is provided with a projecting member for opening and holds the work by the force of an elastic body between the lever in the clamp position and the work receiver. testing machine.