CN102155899A - Method for detecting rhombus degree of cast-aluminum rotor of high-voltage motor - Google Patents

Abstract

The invention provides a device and method for detecting the rhombus degree of a cast-aluminum rotor of a high-voltage motor, relating to the field of manufacturing a high-voltage motor. The device comprises an angle square, a testing platform, an equal-altitude block and a rotor iron core end plate, wherein the iron core end plate is arranged at the bottom of a rotor iron core and is arranged on the testing platform through the equal-altitude block. The method comprises the following steps: padding the rotor core by utilizing the equal-altitude block; and using a high-precision plane as a reference plane, detecting the gap between the rotor core and the right-angle side of the angle square, and then using a formula to calculate the rhombus degree of the rotor. By the detecting method provided by the invention, the detecting precision for detecting the rhombus degree of the centrifugal cast-aluminum rotor iron core is effectively improved; the defect of disqualification caused by dynamic balance of the rotor in the next procedure is avoided; and simultaneously, the situation that the products are easily damaged when the cast-aluminum rotor iron core is directly used as detecting standard in the prior art is avoided. The method is simple in structure and unique in design, and can be easily popularized and applied to detecting the rhombus degree of the centrifugal cast-aluminum rotor iron core of the high-voltage motor.

Description

A kind of high-voltage motor cast-aluminum rotor rhombus degree detection method

Technical field

Patent of the present invention relates to a kind of testing fixture and inspection method thereof of high-voltage motor cast-aluminum rotor rhombus degree, belongs to high-voltage motor and makes the field.

Background technology

Rotor core behind the employing centrifugal aluminum casting detects its rhombus degree and whether meets product requirement, in the prior art, one end contacts with ground, the other end directly directly leans against one side of angle square on the rotor core outer face that has cast aluminium, as measuring basis, measures its gap, with the aluminium plane of a loop as Fundamentals of Measurement, its surface accuracy is not high, therefore can produce gross error to measuring, can not be up to standard.

Summary of the invention

The present invention is directed to the deficiencies in the prior art, a kind of inspection method of cast-aluminum rotor rhombus degree is provided, avoided the detection method out of true of cast-aluminum rotor rhombus degree in the prior art effectively, overcome follow-up when carrying out dynamic balance running, the rotor noise in operating is big, temperature rise, and rotor eccentricity can't compensate with the transient equilibrium piece, do not reach the standard of cast-aluminum rotor, the present invention simultaneously is applicable to that all high-voltage motor rotor cores adopt the occasion of centrifugal aluminum casting.

For realizing above technical purpose, the present invention will take following technical scheme:

A kind of testing fixture of high-voltage motor cast-aluminum rotor rhombus degree comprises angle square, verifying bench, isometry block and rotor core end plate, and rotor core bottom secured core end plate lies on the described verifying bench by isometry block.

The inspection method of a kind of high-voltage motor cast-aluminum rotor rhombus degree of the present invention may further comprise the steps:

The first step on verifying bench, will be cooled off good rotor core pad with isometry block and rise, and be provided with the rotor core end plate between the good rotor core of described isometry block and described cooling;

Second step fully contacted angle square first right-angle side with the verifying bench upper surface, promoted angle square and made the side of its second right-angle side near the good rotor core of described cooling, a bit fully contacted with described rotor core side up to described angle square second right-angle side;

In the 3rd step, measure the maximal clearance L between rotor core and the right-angle side; And by formula calculating rotor core rhombus degree χ=D*sina=D*sin (arctgL/FeL).

According to above technical scheme, can realize following beneficial effect:

The detection method of the described cast-aluminum rotor rhombus of the application of the invention degree utilizes isometry block that the rotor core pad is risen, and as reference field, the gap between detection rotor iron core and the angle square vertical edges utilizes formula that rotor rhombus degree is calculated with high precision plane.This detection method improves the rhombus degree accuracy of detection of rotor core behind the centrifugal aluminum casting effectively, avoids down the step to bring underproof defective when the operation rotor is done transient equilibrium.The present invention is simple in structure, and the thinking distinctness is easy to promote the use of the detection of adopting the rhombus degree of centrifugal aluminum casting in the high-voltage motor rotor core.

Description of drawings

Fig. 1 is the synoptic diagram of detection rotor iron core rhombus degree of the present invention;

Fig. 2 is the synoptic diagram of calculating rotor core rhombus degree formula of the present invention;

Wherein, rotor core 1 isometry block 2 rotor end plates 3 detection platform 4 angle squares 5 iron core height FeL

The D maximal clearance L of iron core diameter.

Embodiment

Accompanying drawing discloses the synoptic diagram of the detection method of a kind of cast-aluminum rotor rhombus degree involved in the present invention without limitation, explains technical scheme of the present invention below with reference to accompanying drawing.

Illustrated in figures 1 and 2, the detection method of a kind of cast-aluminum rotor rhombus degree of the present invention, the first step, on verifying bench 4, to cool off good cast-aluminum rotor iron core 1 with isometry block 2 fills up, be provided with rotor core end plate 3 between described rotor core 1 and the verifying bench 4, described isometry block 2 is arranged as best of breed with 3 formation " triangle ", the both ends of the surface of the both ends of the surface of described isometry block 2 and described core end plate 3 are high precision plane, the height of described isometry block greater than aluminium ring and fan blade height so that directly the rotor core pad is risen; Measure a plurality of points of cylindrical end face under the rotor core and the distance between the verifying bench, thereby guarantee the depth of parallelism of aluminium ring end face and platform, otherwise the relative position position of adjusting isometry block guarantees its depth of parallelism.Second step, angle square 5 one right-angle sides are fully contacted with verifying bench, be pushed to another right-angle side of angle square near the rotor core side, up to described angle square 5 another right-angle sides with after described rotor core 1 side fully contacts, the maximal clearance L between measurement rotor core and the right-angle side; The 3rd step, calculate rotor core rhombus degree χ=D*sina=D*sin (arctgL/FeL) by formula, judge its testing result.

Through said method, just deficiency of the prior art can be overcome.

Claims (2)

1. the testing fixture of a high-voltage motor cast-aluminum rotor rhombus degree, it is characterized in that, comprise rotor core (1), angle square (5), verifying bench (4), isometry block (2) and rotor core end plate (3), described rotor core (1) bottom secured core end plate (3) lies on the described verifying bench (4) by isometry block (2).

2. the inspection method of a kind of high-voltage motor cast-aluminum rotor rhombus degree according to claim 1 is characterized in that, may further comprise the steps:

The first step on verifying bench (4), will cool off the rotor core (1) of getting well with isometry block (2) and fill up, and be provided with rotor core end plate (3) between the good rotor core (1) of described isometry block (2) and described cooling;

Second step, angle square (5) first right-angle sides are fully contacted with verifying bench (4) upper surface, promote angle square (5) and make the side of its second right-angle side, a bit fully contact with described rotor core (1) side up to described angle square (5) second right-angle sides near the good rotor core (1) of described cooling;

In the 3rd step, measure the maximal clearance L between rotor core and the right-angle side; And by formula calculating rotor core rhombus degree χ=D*sina=D*sin (arctgL/FeL).

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