JPH07318620A - Lock/no-load tester for motor - Google Patents

Abstract

PURPOSE:To restrict the loss as low as possible upon occurrence of a failed product especially in the production of a canned motor and to specify the cause of failure while recognizing variation in the electric performance before and after the canning easily. CONSTITUTION:The lock/no-load tester comprises a rotor 12 for testing the electric performance of a stator 10 after finishing the winding process by inserting the rotor 12 into the stator 10, and a V block 28 for holding and positioning the stator 10. The V block 28 comprises supports 30 for holding the rotary shaft of the test rotor 12, at the opposite ends thereof, through bearings 12b, means 32 for pressing the stator 10 held by the V block 28, and a position switching lever means 34 for elevating/lowering the V block 28. Furthermore, the support 30 is provided, at a part thereof, with means for stopping a jig 12c which engages with the rotary shaft of the rotor 12 to lock the shaft.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test device for electric performance of a motor, particularly for restraint and no-load characteristics, and for example, electric performance test for a stator in which a winding process is completed in a canned motor whose manufacturing process is complicated. Regarding the device.

[0002]

2. Description of the Related Art Generally, the electric performance of a motor is confirmed by carrying out a restraint / no-load test when it is completed.

That is, for example, in the manufacturing process of the canned motor shown in FIG. 3, the stator 10 which has completed the winding process 11a, the varnish processing process 11b and the canning process 11c, the shaft inserting process 13a and the machining process. 1
3b and the rotor 12 which has completed each process of the canning process 13c are assembled in the assembling process 14 to be completed as a canned motor, and then this canned motor is tested and confirmed for electrical performance in a testing process 16. It is transferred to the next step 18.

[0004]

However, according to the testing method by the conventional electric performance testing device for a motor, there are the following drawbacks in a canned motor or the like manufactured by a particularly complicated manufacturing process. is doing.

That is, for example, in the above-described method for testing a canned motor including the steps shown in FIG. 3, first, when a rejected product occurs, the rejected product has already completed all the complicated manufacturing steps. Since the product was obtained, not only was loss increased, but it was difficult to identify the cause of defects.

[0006] Generally, in this type of canned motor, it is desired to confirm the change in electric performance before and after the canned motor, but such a confirmation cannot be made by the conventional test method. Incidentally, it is clear that the occurrence of such a problem is an important problem because most of them are in the stator part and the stator occupies most of the manufacturing cost and manufacturing process of the motor. is there.

Therefore, an object of the present invention is to reduce the loss as much as possible even when a rejected product is produced, especially when manufacturing a canned motor, and to easily identify the cause of the defect, and before and after canning. It is an object of the present invention to provide a motor restraint / no-load test device capable of easily confirming a change in the electric performance of

[0008]

In order to achieve the above object, a motor restraint / no-load test apparatus according to the present invention is inserted into a stator that has completed a winding process and the electric performance of the stator is improved. And a V block for holding and positioning the stator, and a support for holding both ends of the rotating shaft of the test rotor via bearings, respectively. A pillar, a pressing means for pressing and holding the stator held by the V block, and a position switching lever means for raising and lowering the V block are provided, and a part of the supporting pillar is engaged with the rotating shaft of the rotor. Then, engaging means for locking a jig for restraining the shaft is provided.

In the above-mentioned test apparatus, the pressing means and the position switching lever means of the stator provided on the V block can be constructed so as to be pneumatically operated.

[0010]

According to the motor restraint / no-load test apparatus of the present invention, the electric performance of the stator after the winding process can be increased / decreased by the V block having the stator pressing means and the position switching lever means. Applying a supporting strut for holding both ends of the rotor rotation shaft through bearings, each of which has engaging means for engaging a jig for engaging the rotation shaft of the rotor to restrain the shaft. Can be easily tested and confirmed.

In particular, according to the test apparatus of the present invention, it is possible to surely achieve the test and confirmation of the electric performance before and after the canned stator, that is, the restraint / no-load characteristics. As a result, in the production of a canned motor, even if a rejected product occurs, the loss can be suppressed as much as possible, the cause of the defect can be easily specified, and the electrical performance before and after the canning can be changed. It can be easily confirmed.

[0012]

Embodiments of the motor restraint / no-load test apparatus according to the present invention will be described in detail below with reference to the accompanying drawings. For convenience of explanation, the same components as those of the conventional configuration shown in FIG. 3 are designated by the same reference numerals, and detailed description thereof will be omitted.

First, the motor restraint / no-load test apparatus according to the present invention is basically designed to be used in combination with the test step 16 in the conventional motor test method described above (FIG. 3). Line process 11a and varnish process 11
Between b, it is arranged to add a test step 20 of the electrical performance of the stator, as indicated by the dashed line.

That is, referring to FIG. 1 and FIG. 2, the stator testing apparatus of the present invention basically has a rotating shaft 12a inside the stator 10 after the winding step 11a.
A test motor 22 (FIG. 2) is formed by incorporating the test rotor 12 having the bearing 12b and the shaft restraint jig 12c provided thereon. Then, the test motor 22 is configured to confirm the electrical performance of the stator 10 in the intermediate step by performing a normal restraint test and a no-load test through the measuring device 24. The test rotor 12
Needless to say, each is prepared corresponding to the shape and characteristics of each stator 10 to be confirmed.

In the testing apparatus of the present invention, however, the vertically movable V block 28 for holding and positioning the stator 10 arranged on the table 26, the bearing 12b of the rotor 12 and the shaft restraining jig 12c. And a support column 30 for holding each of them. The V block 28 has the stator 10 mounted thereon.
And the stator 10 on which the stator is mounted and held at a predetermined height, that is, at a height that is aligned with the bearing 12b and the support column 30. Position switching lever means 34 for raising or lowering the block 28 to a predetermined set height is provided.

On the other hand, the support column 30 is provided with locking means 30a for holding the bearing 12b and engaging means 30b for releasably holding the shaft restraining jig 12c.

The pressing means 32 and the position switching lever means 34 are constructed by an air operation system, and the operating switches, that is, the clamp switch 32a and the elevating switch 34a can be provided on the table 26.

Further, in FIG. 1, reference numeral 36 indicates a terminal block for connecting the power line 10a of the stator 10 to be tested.

Next, the operation or operation of the test apparatus of the present invention thus constructed will be briefly described. In the test, first, the stator 10 to be tested is placed on the V block 28 in the raised position, and then the clamp switch 32a is operated to press and hold the stator 10 by the pressing means 32. Then, in this state, the rotating shaft 1 is previously provided inside the stator 10.
The test rotor 12 having the bearing 12b and the shaft restraint jig 12c mounted on the 2a is assembled to form a test motor 22.

In this manner, the elevating switch 34a is operated, and the V-block 28 holding the test motor 22 is lowered to the predetermined set height by the position switching lever means 34 which is set in a predetermined state in advance. Let
Next, the bearing 12b and the shaft restraint jig 12c, which are matched in height and relative position with respect to the support column 30, are engaged and held on the support column 30 via the respective locking means 30a and engagement means 30b. Finally, by connecting the power line 10a of the stator 10 to the terminal block 36 and energizing it, the electric performance of the stator 10 can be confirmed through the measuring device 24. The test apparatus can remove the stator 10 and the test rotor 12 by operating the operation procedure in the reverse order. As described above, according to the present invention, it is possible to easily test and confirm the electric performance of the stator that has completed the winding process. Therefore, especially when manufacturing a canned motor whose manufacturing process is complicated, even if a defective product in terms of electrical performance occurs, the loss due to this can be suppressed as much as possible and the cause of the defect can be easily specified. can do. Moreover, there is an advantage that the change in the electrical performance before and after the canning can be easily confirmed, if necessary.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and many design changes can be made without departing from the spirit thereof. For example, the locking means of the support column may be pneumatically operated if desired.

[0022]

As described above, the motor restraint / no-load test apparatus according to the present invention is used for testing for testing the electric performance of the stator by inserting the motor into the stator after the winding process. The V block is provided with a rotor and a V block for holding and positioning the stator, and the V block includes a support column for holding both ends of a rotating shaft of the test rotor via bearings, and a V block for the V block. A pressing means for pressing and holding the held stator;
Provided with position switching lever means for raising and lowering the block,
Further, by providing an engaging means for engaging a jig for engaging with the rotary shaft of the rotor and restraining the shaft in a part of the support column, intermediate manufacturing of the stator alone forming a motor. The electric performance in the process can be confirmed in the same manner as the electric performance of the entire motor.

Therefore, according to the present invention, particularly in the manufacture of a canned motor having a complicated manufacturing process, even if a defective product in terms of electrical performance occurs, the loss due to this is suppressed as much as possible, and the cause of the failure is Can be easily specified, and if necessary, the change in electrical performance before and after the canning can be easily confirmed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of each component of a motor restraint / no-load test apparatus according to the present invention.

FIG. 2 is a perspective view showing an assembled state of the test apparatus shown in FIG.

FIG. 3 is a process diagram showing a general manufacturing and testing process of a motor.

[Explanation of symbols]

 10 stator 10a power line 11a-11c stator manufacturing process 12 rotor 12a rotating shaft (rotor shaft) 12b bearing 12c shaft restraining jig 13a-13c rotor manufacturing process 14 assembly process (canned motor) 16 test process 18 next process 20 test process 22 Test motor 24 Measuring instrument 26 Table 28 V block 30 Supporting post 30a Locking means 30b Engaging means 32 Pressing means 32a Clamp switch 34 Position change lever 34a Elevating switch 36 Terminal block

Claims (2)

[Claims] 1. A test rotor for inserting the stator into which the winding process has been completed to test the electric performance of the stator, and a V block for holding and positioning the stator, The V block has support columns for holding both ends of the rotating shaft of the test rotor via bearings, pressing means for pressing and holding the stator held by the V block, and a position for moving the V block up and down. A motor comprising: a switching lever means; and an engagement means for locking a jig for engaging the rotation shaft of the rotor and restraining the shaft, in a part of the support column. Restraint and no-load test equipment. 2. The motor restraint / no-load test device according to claim 1, wherein the pressing means and the position switching lever means of the stator provided on the V block are configured to be pneumatically operated.