CN207251361U - A kind of motor - Google Patents

Abstract

Electrical equipment technical field, more particularly to a kind of motor are the utility model is related to, to improve its reliability and extend its service life.The motor includes：Shell, the shaft being located in the shell, load side bearing and permanent magnet, and wherein described shell is made of nonmagnetic substance, and the inner ring of the load side bearing and outer ring are made of magnetic material；The load side bearing is located in shell；The permanent magnet is located at the outside of the load side end face of the shell.

Description

A kind of motor

Technical field

It the utility model is related to electrical equipment technical field, more particularly to a kind of motor.

Background technology

Since the power bracket that motor is capable of providing is very big, with economic development and the raising of productivity, should Various aspects in modern society's life.Motor generally requires the shaft items skill to motor after assembly is completed Art index is detected, wherein since shaft generally requires to be connected with executing agency by shaft coupling, thus need stringent control The axis beating degree of shaft is so that motor and executing agency are reliably connected and reliably run.

But in the prior art, during motor is assembled, due to misoperation (such as the shaft of operator With the misoperation of the interference fit of other components) etc. often assembling complete after, cause the axis beating degree of shaft to exceed The problems such as tolerance range of setting, such as the shaft of motor are inclined relative to the run-out tolerance for two bearing outer rings for supporting the shaft Separate out the tolerance range of setting, result in the reliability decrease of motor, and cause bearing due to being subject to improperly pretightning force and The lost of life, and then cause the service life of motor to shorten.

Therefore, the axis beating degree of the shaft after motor is completed how is efficiently controlled, is urgent need to resolve The problem of.

Utility model content

The utility model provides a kind of motor, and the axis beating degree of its shaft is controlled, and the clearance of its bearing It is controlled, so as to improve the reliability of motor and extend its service life.

For this reason, the one side of the utility model embodiment there is provided a kind of motor, it includes：Shell, be located at Shaft, load side bearing and permanent magnet in the shell, wherein,

The shell is made of nonmagnetic substance, and the inner ring of the load side bearing and outer ring are made of magnetic material；

The load side bearing is located in shell；

The permanent magnet is located at the outside of the load side end face of the shell.

Using motor provided by the utility model, permanent magnet is located at the outside of load side end face, it deviates described turn The position of axis, therefore before the outer ring of bearing is fixed, the magnetic that is applied to by the permanent magnet on the outer ring of load side bearing Power acts on so that the line of centres of the outer ring of two bearings of motor deflects certain angle relative to shaft, that is, have adjusted axis The axis beating degree of shaft, so that after motor is completed, can be efficiently controlled in and set by the measuring basis of beating degree In fixed tolerance range, the reliability of motor is improved；Also, due to position adjustment of the permanent magnet to the outer ring of bearing so that interior The pretightning force of clearance and bearing between circle and outer ring has also obtained effectively adjusting, so as to effectively extend the longevity of bearing Life, thus the service life of motor also extended.

The form of permanent magnet in motor have it is a variety of, such as can be arranged on it is independent on the outside of load side end face Permanent magnet, or the part being arranged in the annular construction member in the outside of load side end face.

In order to improve the interchangeability and its production efficiency of the parts for forming motor, at the another aspect of the utility model In, the permanent magnet is the part in annular construction member, and the annular construction member is coaxially set with the shaft.It is each due to forming The component all same of a motor, is only the size of permanent magnet on annular construction member, magnetic field intensity and relative to shell Load side end face position it is different, therefore greatly increase the production efficiency in motor procedure is produced in enormous quantities.

It is possible to also apply magneticaction to the inner ring and shaft of bearing in view of the magnetic field of permanent magnet, in order to simplify forever The calculating of the size and magnetic field intensity of magnet, in the another aspect of the utility model, the anchor ring of the annular construction member with it is described The outer ring of load side bearing is opposite and puts and equal in magnitude.In such manner, it is possible to reduce as much as possible permanent magnet to the inner ring of bearing with And the magneticaction that shaft is applied, magneticaction only substantially is applied to the outer ring of bearing, so as to simplify permanent magnet The calculating of size and magnetic field intensity, greatly increases the adjustment accuracy of permanent magnet.

Motor provided in the another aspect of the utility model is further included positioned at the outside of the load side end face Annular bearing part that is upper and being coaxially set with the shaft, wherein the permanent magnet is attached on the annular bearing part.

Specifically, the permanent magnet can be bonded on the outside of load side end face of the shell, or the permanent magnetism Body can be pressed into the load side end face of the shell.

The permanent magnet in motor provided by the utility model is by Al-Ni-Co series permanent-magnet alloy, siderochrome cobalt system permanent magnetism Alloy, permanent-magnet ferrite or rare earth permanent-magnetic material are made.The shell is made of aluminium and/or plastics.

Brief description of the drawings

Fig. 1 shows the diagrammatic cross-sectional view of the first embodiment of the motor of the utility model；

Fig. 2 shows the right view of the motor of Fig. 1；

Fig. 3 shows the diagrammatic cross-sectional view of the first embodiment of the motor of the utility model, wherein not installing Permanent magnet；

Fig. 4 shows the measurement result schematic diagram of the axis beating degree of the shaft of the motor shown in Fig. 3；

Fig. 5 shows the diagrammatic cross-sectional view of the second embodiment of the motor of the utility model；

Fig. 6 shows the right view of the motor of Fig. 5；

Fig. 7 shows the diagrammatic cross-sectional view of the 3rd embodiment of the motor of the utility model；

Fig. 8 shows the diagrammatic cross-sectional view of the another embodiment of the motor of the utility model.

Embodiment

In application motor, it is necessary to which motor has the service life of high reliability and length.The utility model institute Permanent magnet in the motor of offer is located at the outside of the load side end face, it deviates the position of the shaft in radial directions Put, therefore before the outer ring of bearing is fixed, the magneticaction that is applied to by the permanent magnet on the outer ring of load side bearing, So that the line of centres of the outer ring of two bearings of motor deflects certain angle relative to shaft, that is, it have adjusted axis beating degree The axis beating degree of shaft, so that after motor is completed, can be efficiently controlled in the tolerance of setting by measuring basis In band, the reliability of motor is improved；Also, due to position adjustment of the permanent magnet to the outer ring of bearing so that inner ring and outer ring Between clearance and the pretightning force of bearing also obtained effectively adjusting, so as to effectively extend the service life of bearing, thus The service life of motor is also extended.

To be more clearly understood that the embodiment of the utility model, referring to the drawings, carried out specifically with specific embodiment It is bright, wherein similar component or identical component are denoted by the same reference numerals.

Shown referring to Figures 1 and 2, for the motor in the first embodiment of the utility model, it includes：

Stator 10, rotor 20, shell 1, shaft 2, the bearing (3.1,3.2) and waveform spring washer 5 for supporting shaft 2, its axis The 3.1 non-load sides for being located at motor are held, bearing 3.2 is located at the load side (i.e. bearing 3.2 is load side bearing) of motor, outside Shell is made of aluminum, and bearing is stainless steel bearing；

The motor further includes：Permanent magnetism positioned at the outside of the load side end face 1a in shell 1, the position for deviateing shaft 2 Body 40.

The manufacture assembling process of the motor in present embodiment is specifically described below：

First, stator 10, rotor 20, shaft 2, bearing (3.1,3.2) and shell 1 (as shown in Figure 3) are assembled；Then it is sharp By the use of axis bouncing degree detector detection shaft 2 axis beat (line of centres of the outer ring of its middle (center) bearing 3.1 and bearing 3.2 as The periphery of the outer ring of the datum axis of measurement axis beating degree, bearing 3.1 and bearing 3.2 is respectively as measuring basis A and benchmark B), And the axis detected is beated and is compared with the tolerance range (annular region as shown in Figure 4, tolerance value ε) set, Determine the axis bounce part (part as represented by C in Fig. 4) of the tolerance range beyond the setting of shaft 2；Afterwards, by permanent magnet 40 are arranged on the outside of the load side end face 1a of shell 1, wherein the size of permanent magnet 40 and magnetic field intensity and its relative to The position of load side end face is according to the axis bounce part C of the tolerance range beyond setting (that is, the biased direction of axis beating degree and big It is small) and the design requirement of axis beating degree determine；Afterwards, the outer ring of bearing and shell are fixed (such as by elastic solid Or non-resilient solid is fixed).

It should be noted that determine size and magnetic field intensity and its position relative to load side end face of permanent magnet 40 Put, for example, can by with the software that setting program instructs according to the biased direction and size of axis beating degree and motor The design requirement of axis beating degree determines, can also be determined by experimental data.Such as in the present embodiment, such as Fig. 2 and Shown in Fig. 4, permanent magnet 40 is generally radially arranged on the outside of the load side end face of shell 1 relative to part C on the contrary.

It should be noted that the load side of motor refers to the side of motor output power.

It is further to note that bearing is generally made of inner ring, outer ring, rolling element and four part of retainer, inner ring Effect is that (being usually that transition coordinates or is interference fitted) is engaged with axis and is rotated together with the axis；The effect of outer ring is and bearing block It is engaged, plays a supportive role；Rolling element is that uniformly rolling element is distributed between inner ring and outer ring by means of retainer, its shape Shape size and number directly affects performance and the service life of bearing；Retainer can be uniformly distributed rolling element, prevent from rolling Body comes off, and guiding rolling element has rotated lubricating action.

From the manufacture assembling process of above-mentioned motor, as shown in Figure 1, magneticaction of the permanent magnet 40 to bearing 3.2 Mainly it is applied on outer ring 3.21, so as to effectively adjust the position of outer ring 3.21 so that the outer ring 3.21 of bearing 3.2 and bearing The line of centres of 3.1 outer ring 3.11 deflects certain angle relative to shaft 2, that is to say, that have adjusted the measurement base of axis beating degree Standard, and adjustment complete after fixing bearing outer ring.

Since permanent magnet 40 is radially opposite set relative to part C, and the size and magnetic field intensity of permanent magnet 40 Be according to the design requirement of the axis beating degree of motor come definite, thus after motor is completed, can will with it is interior The axis beating degree for enclosing the shaft 2 coordinated (is used as measurement using the periphery of the outer ring of the bearing 3.2 behind the outer ring of bearing 3.1 and adjustment Benchmark A and benchmark B) it is efficiently controlled in the tolerance range of setting so that axis beating degree meets the design requirement of shaft, so as to carry The reliability of high motor.

Also, due to position adjustment of the permanent magnet 40 in present embodiment to the outer ring of bearing so that inner ring and outer ring Between clearance (including radial internal clearance and end-play) and the pretightning force of bearing also obtained effectively adjusting so that effectively Ground extends the service life of bearing, thus the service life of motor also extended.

Wherein it should be noted that motor assembling during, it usually needs using waveform spring washer as elastic component come To load side bearing apply pretightning force, therefore, in an other embodiment of the utility model, motor except including Outside all parts in first embodiment, the waveform set between the load side end face of shell 1 and bearing 3.2 is additionally included in Spring washer 5 (shown in Figure 1).It should be understood, however, that other types of elastic component can also apply in advance load side bearing Clamp force.Certainly, in other alternative embodiments, motor can both be included in load side end face and the bearing 3.2 of shell 1 Between the waveform spring washer 5 that sets, be additionally included in the waveform spring washer set between the non-load side end face of shell 1 and bearing 3.1, or Person, only is included between the non-load side end face of shell 1 and bearing 3.1 the waveform spring washer set.

Further, it is contemplated that the interchangeability of motor manufacture and the requirement of mass production, additionally provide this practicality New second embodiment, difference lies in as shown in Figure 5 and Figure 6, permanent magnet 40 is by permanent magnetism with first embodiment for it The part being magnetized in annular construction member 4 made of material, that is to say, that permanent magnet 40 is the part in annular construction member 4, should Annular construction member 4 is coaxially set with shaft 2.

The manufacture assembling process of the motor in present embodiment is specifically described below：

First, stator 10, rotor 20, shaft 2, bearing (3.1,3.2) and shell 1 are assembled；Then axis beating degree is utilized The axis bounce of detection device detection shaft 2, and the axis detected bounce is determined into shaft 2 compared with the tolerance range set The tolerance range beyond the setting axis bounce part；According to the axis bounce part of the identified tolerance range beyond setting (i.e., The biased direction and size of axis beating degree) come determine on annular construction member 4 be used for adjust the part to be magnetized of axis beating degree (including determining the position of its size and magnetic field intensity with it relative to the load side end face of shell), then treats this by magnetic The part of change magnetizes (such as magnetic to the part by magnetomechanical) to form permanent magnet 40；By the annular structure with permanent magnet 40 Part 4 is assemblied on the outside of load side end face of shell according to identified before its relative to the position of load side end face；It Afterwards, the outer ring of bearing is fixed with shell.

From the foregoing, it will be observed that the motor provided using present embodiment, can not only efficiently control the axis bounce of shaft Degree, and during the motor that manufacture present embodiment is provided, due to forming the component all same of each motor, Only the size of the permanent magnet on annular construction member, magnetic field intensity and relative to shell load side end face position not Together, thus greatly increase form motor parts interchangeability and its production efficiency.

It is possible to also apply the inner ring and shaft of bearing magneticaction in view of the magnetic field of permanent magnet, thus in order to the greatest extent Possibly reduce the magneticaction that permanent magnet applies the inner ring and shaft of bearing, on the basis of second embodiment, The 3rd embodiment of the utility model is additionally provided, difference lies in annular structure as shown in fig. 7, it is with second embodiment The anchor ring of part 4 is opposite with the outer ring of load side bearing and puts and equal in magnitude.

The motor provided using present embodiment, is put and size since the anchor ring of annular construction member 4 is opposite with outer ring It is equal, thus, after a part for annular construction member 4 is formed as permanent magnet 40, which substantially only applies the outer ring of bearing Add magneticaction, so as to simplify the calculating of the size and magnetic field intensity of permanent magnet, greatly increase the adjustment of permanent magnet Accuracy.

The another embodiment of motor provided by the utility model is also provided below, as shown in figure 8, the embodiment party Formula and first embodiment further included difference lies in, the motor on the outside of load side end face and with shaft coaxial line The annular bearing part 6 of setting, wherein permanent magnet 40 are fixed on the outer of load side end face by being pasted onto on the annular bearing part 6 On side.

Same reason, the motor provided using present embodiment can also efficiently control the shaft of motor Axis beating degree, improves the reliability of motor, and extends the service life of bearing, and then extends the service life of motor；And can After annular bearing part and permanent magnet are installed, wanted when the axis beating degree detection of further countershaft finds not adjusting to satisfaction When asking, after being dismantled with permanent magnet again according to the position of the required load side end face relative to shell install to Annular bearing part, consequently facilitating improving the reliability of motor.

It should be appreciated that permanent magnet can also be attached on annular bearing part by other manners such as press-ins.

In the various embodiments of the utility model, the material of permanent magnet have it is a variety of, such as can be Al-Ni-Co series forever Magnetic alloy, siderochrome cobalt system permanent-magnet alloy, permanent-magnet ferrite or rare earth permanent-magnetic material etc..The utility model using shell as aluminum outside Shell is illustrated it should be appreciated that the material of shell also has a variety of, such as can also be plastics or other non-magnetic Property material.In addition, the material of the bearing in motor provided by the utility model also have it is a variety of, it is any magnetic force to be subject to make Magnetic material can be used as the material of the outer ring of bearing.

It should be noted that those skilled in the art's above-mentioned each embodiment according to the present utility model is understood：

Motor provided by the utility model, it includes：Shell, the shaft being located in the shell and load side bearing, The shell is made of nonmagnetic substance, and the inner ring of the load side bearing and outer ring are made of magnetic material；And the electricity Motivation further includes：Permanent magnet positioned at the outside of the load side end face, its outer ring to the load side bearing apply adjustment The magnetic force of the axis beating degree of the shaft.Since the magneticaction that permanent magnet therein applies the outer ring of load side bearing can The position of outer ring is effectively adjusted, so that the measuring basis of axis beating degree is have adjusted, therefore after the motor is completed, The axis beating degree of shaft can be efficiently controlled in the tolerance range of setting so that axis beating degree meets that turning shaft design wants Ask, so as to improve the reliability of motor.Also, since the permanent magnet in present embodiment is to the position tune of the outer ring of bearing It is whole so that the pretightning force of clearance and bearing between inner ring and outer ring has also obtained effectively adjusting, so as to effectively extend The service life of bearing, thus service life of motor also extended.

The specific implementation of the utility model is described in detail above by reference to attached drawing, it is clear that the skill of this area Art personnel can carry out the utility model spirit and scope of the various modification and variations without departing from the utility model.In this way, If these modifications and variations of the utility model belong within the scope of the utility model claims and its equivalent technologies, then The utility model is also intended to comprising including these modification and variations.

Claims (8)

1. a kind of motor, including：Shell, the shaft being located in the shell and load side bearing, it is characterised in that

The shell is made of nonmagnetic substance, and the inner ring of the load side bearing and outer ring are made of magnetic material；

The load side bearing is located in shell；

The motor further includes permanent magnet, and the permanent magnet is located at the outside of the load side end face of the shell.

2. motor according to claim 1, it is characterised in that the permanent magnet be annular construction member in a part, institute Annular construction member is stated to be coaxially set with the shaft.

3. motor according to claim 2, it is characterised in that the anchor ring of the annular construction member and the load side bearing Outer ring it is opposite and put and equal in magnitude.

4. motor according to claim 1, it is characterised in that the load side end face of the shell and the load side axle Elastic component is additionally provided between holding.

5. motor according to claim 1, it is characterised in that further include positioned at the outer of the load side end face of the shell The annular bearing part being coaxially set on side and with the shaft, wherein the permanent magnet is attached on the annular bearing part.

6. motor according to claim 1, it is characterised in that the permanent magnet is bonded in the load side of the shell On the outside in face, or the permanent magnet is pressed into the load side end face.

7. according to motor according to any one of claims 1 to 6, it is characterised in that the permanent magnet by Al-Ni-Co series forever Magnetic alloy, siderochrome cobalt system permanent-magnet alloy, permanent-magnet ferrite or rare earth permanent-magnetic material are made.

8. according to motor according to any one of claims 1 to 6, it is characterised in that the shell is by aluminium and/or plastics system Into.