CN102359512A - High-accuracy mounting device for pre-stressed spring of electromagnetic clutch and electromagnetic brake - Google Patents
High-accuracy mounting device for pre-stressed spring of electromagnetic clutch and electromagnetic brake Download PDFInfo
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- CN102359512A CN102359512A CN2011102582164A CN201110258216A CN102359512A CN 102359512 A CN102359512 A CN 102359512A CN 2011102582164 A CN2011102582164 A CN 2011102582164A CN 201110258216 A CN201110258216 A CN 201110258216A CN 102359512 A CN102359512 A CN 102359512A
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Abstract
The invention discloses a high-accuracy mounting device for a pre-stressed spring of an electromagnetic clutch and an electromagnetic brake. The high-accuracy mounting device comprises the pre-stressed spring, an armature and a permanent seat, wherein the pre-stressed spring is arranged between the armature and the permanent seat and is simultaneously and fixedly connected with the armature and the permanent seat; the end face of the armature close to the permanent seat or/and the end face of the permanent seat close to the armature is/are provided with an inward concave sinking trough; and the pre-stressed spring is arranged in the sinking trough. By adopting the high-accuracy mounting device, the problems of axial end face runout produced during riveting of the conventional pre-stressed spring of the electromagnetic clutch and the electromagnetic brake and the armature and the permanent seat and eventually led non-uniform mounting air gap between the armature and the permanent seat and the problem of high requirement on processing accuracy and riveting process of the pre-stressed spring brought by the non-uniform mounting air gap are solved, attraction voltage and separation voltage of the armature are more stable, attraction or separation action is more reliable and sable, and the production cost is reduced.
Description
Technical field
The present invention relates to the erecting device of the prestressed spring of a kind of magnetic clutch and electromagnetic brake; Relate in particular to the highi degree of accuracy erecting device of the prestressed spring of a kind of magnetic clutch and electromagnetic brake, belong to the production field of magnetic clutch and electromagnetic brake.
Background technique
Existing electrical braking type electromagnetic brake, permanent-magnet type electromagnetic brake and magnetic clutch; A common structure is all arranged: comprise spring, armature and fixed base; Generally speaking; Spring is plane shape sheet spring or waveform sheet spring (latter is a kind of for prestressed spring), and fixed base is rotor or stator; Spring is directly installed between armature and the fixed base and is fixedly connected with fixed base with armature simultaneously.
If spring adopts plane shape sheet spring; Its structure with working principle is: plane shape sheet spring is connected with fixed base with armature respectively through rivet, transmits or cut off the moment of torsion of rotor to stator (rotor and divided stator are listed in the both sides of armature) through the distortion in the axial direction of plane shape sheet spring; Then its defective is: plane shape sheet spring does not have prestressing force after riveted joint, and at the initial time that the armature of clutch or break breaks away from, the pulling force of plane shape sheet spring is very little, can not satisfy to make rotor break away from the pulling force needs of stator, loses efficacy thereby cause breaking away from; If the initial time pulling force that the armature of clutch, break is broken away from the increase of sheet spring thickness increases; But the plane shape sheet spring of thickening is big owing to spring rate under identical amount of deformation; Sheet spring power is changing too greatly because of the spring force in the working size excursion; Also can too much offset limited permanent magnetism power or electromagnetic force, the braking torque of product is reduced, thereby influence the product braking effect.
If spring adopts waveform sheet spring; Its structure is: waveform sheet spring is connected with fixed base with armature respectively through rivet; Its advantage is: behind product waveform sheet spring owing to self have prestressing force; Spring rate is little simultaneously, guarantees that in actual use armature keeps a very little excursion at working size action change condition lower spring pulling force, guarantees product ability regular event and stable performance; But the direct mounting structure of existing waveform sheet spring has following defective: waveform sheet spring is owing to receive the influence of process for machining and manufacturing, its Wave crest and wave trough holding in the axial direction apart from conformity is difficult, and promptly the processing technology difficulty of waveform sheet spring is bigger; The riveted joint of waveform sheet spring and fixed base and armature simultaneously also can increase the axial end of armature and beat; It is inhomogeneous finally to cause between armature and the stator of clutch, break air gap being installed, and causes riveting process difficulty, the raising of assembly technology difficulty of waveform sheet spring and armature and fixed base; Problems such as the pick-up voltage of the armature of magnetic clutch, electromagnetic brake and out-off voltage are unstable in addition in addition, action is untimely, not clear-cut occur.Generally, the shortcoming of existing technology is: magnetic clutch and electromagnetic brake are because of spring and the undesirable unstable properties that causes entire product of mounting structure thereof between armature and the fixed base, and processing and assembly cost are higher simultaneously.
Summary of the invention
The object of the invention is with regard to the highi degree of accuracy erecting device of the prestressed spring that is to provide in order to address the above problem a kind of magnetic clutch and electromagnetic brake.
In order to achieve the above object, the present invention has adopted following technological scheme:
The present invention includes prestressed spring, armature and fixed base; Said prestressed spring is installed between said armature and the said fixed base and is fixedly connected with said fixed base with said armature simultaneously; Said armature near on the end face of said fixed base or/and said fixed base is provided with the deep gouge of indent near the end face of said armature, said prestressed spring places in the said deep gouge.
Prestressed spring is placed in the deep gouge; Thereby the mutual face face of armature and fixed base end face is fitted tightly, under the prerequisite of the normal performance of the effect that does not influence prestressed spring, overcome problems such as the action of the pick-up voltage that requirement on machining accuracy is high, mounting process requires height, armature that brings because of its wavy shaped configuration and out-off voltage instability, adhesive and disengaging is untimely, not clear-cut.
As optimum scheme, said armature near the end face of said fixed base and said fixed base near between the end face of said armature closely the face face fit, and when closely the face face was fitted, said prestressed spring was a nature.Can guarantee that like this prestressed spring normally plays a role, can not produce excessive resistance again the adhesive of armature.
Particularly, said prestressed spring is fixedly connected with said fixed base with said armature through rivet simultaneously.As required, also can adopt other Placement.
As optimal selection, said prestressed spring is a waveform sheet spring, and this is to use more a kind of prestressing force flat spring.
Particularly, said fixed base is stator or rotor.If fixed base is a rotor, then the armature opposite side is stator; On the contrary, if fixed base is a stator, then the armature opposite side is rotor.
Beneficial effect of the present invention is:
Use the present invention that the prestressed spring of magnetic clutch and electromagnetic brake is installed; The prestressed spring that has solved existing magnetic clutch and electromagnetic brake and armature and fixed base riveted joint process in produce axial end and beat and finally cause installing between armature and the fixed base the uneven problem of air gap; And by install air gap inhomogeneous bring prestressed spring machining accuracy and riveting process are required the high problem of high request; Make the pick-up voltage and the out-off voltage of armature more stable; Adhesive or disengaging action are reliable more and stable, and the noise of braking and removing in the braking process is lower, and have reduced the cost of production of magnetic clutch and electromagnetic brake.
Description of drawings
Fig. 1 is that structural representation cuts open in the axial office that comprises electromagnetic brake of the present invention;
Fig. 2 is one of the enlarged view of " A " among Fig. 1;
Fig. 3 be " A " among Fig. 1 enlarged view two;
Fig. 4 be " A " among Fig. 1 enlarged view three;
Fig. 5 is the mounting structure schematic representation of the waveform sheet spring of traditional electrical magnetic brake and magnetic clutch;
Fig. 6 is the mounting structure schematic representation of waveform sheet spring of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is made further specific descriptions:
Embodiment 1:
Shown in Figure 1 wherein the prestressed spring described in the present invention is a waveform sheet spring 10 for the present invention is applied to a kind of in the electromagnetic brake, and fixed base is a rotor 7.As shown in Figure 1, the present invention includes waveform sheet spring 10, armature 6 and rotor 7, waveform sheet spring 10 is installed between armature 6 and the rotor 7 and is fixedly connected with rotor 7 with armature 6 simultaneously.As depicted in figs. 1 and 2, rotor 7 is provided with the deep gouge 8 of indent near the end face of armature 6, and waveform sheet spring 10 places in the deep gouge 8; Waveform sheet spring 10 is fixedly connected with rotor 7 with armature 6 through rivet 9 simultaneously; Armature 6 near the end face of rotor 7 and rotor 7 near between the end face of armature 6 closely the face face fit, and when closely the face face was fitted, waveform sheet spring 10 was a nature.Can guarantee that like this waveform sheet spring 10 normally plays a role, can not produce excessive resistance again the adhesive of armature 6.
As shown in Figure 1; Use this electromagnetic brake of the present invention through permanent magnet 2 being connected between outer yoke 3 and the inner yoke 5 with cross recessed countersunk head sscrew 1; Coil 4 is contained in by in outer yoke 3 and the inner yoke 5 formed annular grooves, and encapsulated epoxy resin forms stator module; By rivet 9 waveform sheet spring 10 is riveted together with armature 6 and rotor 7 respectively and forms rotor assembly.Rotor 7 is connected on the main shaft through flat key.Stator module is installed on the motor housing end face through several screw holes of inner yoke 5 end faces.
In conjunction with Fig. 1; Use the working principle of this electromagnetic brake of the present invention following: during coil 4 dead electricity; Armature 6 is being adsorbed under the magnetic force that permanent magnet 2 produces on the end face of outer yoke 3 and inner yoke 5; Friction through two end faces forms the friction torque value, and electric machine main shaft stops operating after the frictional force that receives armature 6 like this, thereby reaches the effect of braking; During coil 4 energisings; Coil 4 produces and opposite magnetic field, permanent magnet 2 magnetic fields; After the permanent magnetism power of permanent magnet 2 is overcome by the electromagnetic force of electromagnetic field fully; Armature 6 leaves outer yoke 3 and inner yoke 5 under the pulling force of waveform sheet spring 10 end face forms air gap, and this moment, braking was removed, and electric machine main shaft begins to rotate under the effect of current drives.
In conjunction with Fig. 1, in said process: during coil 4 dead electricity, waveform sheet spring 10 gives 6 one in armature the pulling force reverse with respect to outer yoke 3 and inner yoke 5.This pulling force is very little when initial, and the back increases with the increase of armature 6 move distances.At this moment, waveform sheet spring 10 helps slowing down the rigid impulse of 6 pairs of outer yokes of armature 3 and inner yoke 5 end faces, keeps the stability of brake structural, reduces the possibility that break receives mechanical failure, the noise when reducing the break adhesive simultaneously.During coil 4 energisings, after the electromagnetic force that coil 4 produces overcame the permanent magnetism power of permanent magnet 2 fully, waveform sheet spring 10 had a pulling force that is in reverse to outer yoke 3 and inner yoke 5, and this reversal interlocking relay pulling armature 6 breaks away from from outer yoke 3 and inner yoke 5 ends.Because the design of waveform sheet spring 10, when break broke away from, the impact of 6 pairs of rotors 7 of armature was absorbed by waveform sheet spring 10, so the noise during the break disengaging is also less.
In conjunction with Fig. 6; In said process: waveform sheet spring 10 effect in the deep gouge 8 that places is: during coil 4 energisings; Waveform sheet spring 10 pulling armature 6 make it to fit fully with rotor 7 relative both ends of the surface and contact, thereby have guaranteed that the installation air gap between the end face of armature 6 and outer yoke 3 and inner yoke 5 is even; During coil 4 dead electricity, because the complete adhesive of end face of the end face of armature 6 and outer yoke 3 and inner yoke 5, so the installation air gap between armature 6 and the rotor 7 also is uniform.Such design can not only guarantee that the installation air gap of break under adhesive and disengaged position all keeps even; And reduced the difficulty of processing of waveform sheet spring 10; Reduced the riveting process difficulty of waveform sheet spring 10 with rotor 7, armature 6; Reduced the assembly technology difficulty of break, made the pick-up voltage of break and out-off voltage stable, action is in time clear-cut.
As shown in Figure 5; Do not adopt conventional construction if do not adopt the present invention; Then waveform sheet spring 10 is directly installed between armature 6 and the rotor 7; There is the gap so must make between armature 6 and the rotor 7,, is difficult to guarantee the complete equidistance in gap between armature 6 and the rotor 7 owing to be difficult to the absolute unanimity of maintenance between the height point on the two sides of waveform sheet spring 10 and high point, low spot and the low spot; Installation air gap between the end face of also just very difficult assurance armature 6 and outer yoke 3 and inner yoke 5 is even, makes the pick-up voltage of armature 6 and out-off voltage become unstable.For pick-up voltage and the out-off voltage that makes armature 6 keeps stable as far as possible; Will guarantee the complete equidistance in gap between armature 6 and the rotor 7 as far as possible; So can require that the machining accuracy of waveform sheet spring 10 is high, waveform sheet spring 10 is high with the riveting process precision of rotor 7, armature 6; Generally speaking, whole break performance of products is unstable, and processing and assembly cost are high simultaneously.
Embodiment 2:
As shown in figures 1 and 3, to compare with embodiment 1, difference only is that deep gouge 8 is arranged on the end face of armature 6 near rotor 7, its working principle, working procedure are all identical with embodiment 1.
Embodiment 3:
Like Fig. 1 and shown in Figure 4, to compare with embodiment 1, difference only is that deep gouge 8 is arranged at armature 6 near on the end face of rotor 7 and on the end face of rotor 7 near armature 6, its working principle, working procedure are all identical with embodiment 1.
The foregoing description is merely part embodiment of the present invention; Also have a lot of variations all to belong to technological scheme of the present invention, also can be stator like above-mentioned rotor 7, above-mentioned waveform sheet spring 10 also can be the prestressed spring of other type; Above-mentioned electromagnetic brake also can be magnetic clutch; No matter how to change, prestressed spring is installed on the structure in the deep gouge, just invaded the right of patent of the present invention as long as adopted.
Claims (7)
1. the highi degree of accuracy erecting device of the prestressed spring of magnetic clutch and electromagnetic brake; Comprise prestressed spring, armature and fixed base; Said prestressed spring is installed between said armature and the said fixed base and is fixedly connected with said fixed base with said armature simultaneously; It is characterized in that: said armature near on the end face of said fixed base or/and said fixed base is provided with the deep gouge of indent near the end face of said armature, said prestressed spring places in the said deep gouge.
2. the highi degree of accuracy erecting device of the prestressed spring of magnetic clutch according to claim 1 and electromagnetic brake; It is characterized in that: said armature near the end face of said fixed base and said fixed base near between the end face of said armature closely the face face fit; And when closely the face face was fitted, said prestressed spring was a nature.
3. the highi degree of accuracy erecting device of the prestressed spring of magnetic clutch according to claim 1 and 2 and electromagnetic brake is characterized in that: said prestressed spring is fixedly connected with said fixed base with said armature through rivet simultaneously.
4. the highi degree of accuracy erecting device of the prestressed spring of magnetic clutch according to claim 3 and electromagnetic brake is characterized in that: said prestressed spring is a waveform sheet spring.
5. the highi degree of accuracy erecting device of the prestressed spring of magnetic clutch according to claim 3 and electromagnetic brake is characterized in that: said fixed base is stator or rotor.
6. the highi degree of accuracy erecting device of the prestressed spring of magnetic clutch according to claim 1 and 2 and electromagnetic brake is characterized in that: said prestressed spring is a waveform sheet spring.
7. the highi degree of accuracy erecting device of the prestressed spring of magnetic clutch according to claim 1 and 2 and electromagnetic brake is characterized in that: said fixed base is stator or rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102582164A CN102359512A (en) | 2011-09-02 | 2011-09-02 | High-accuracy mounting device for pre-stressed spring of electromagnetic clutch and electromagnetic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102582164A CN102359512A (en) | 2011-09-02 | 2011-09-02 | High-accuracy mounting device for pre-stressed spring of electromagnetic clutch and electromagnetic brake |
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| Publication Number | Publication Date |
|---|---|
| CN102359512A true CN102359512A (en) | 2012-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102582164A Pending CN102359512A (en) | 2011-09-02 | 2011-09-02 | High-accuracy mounting device for pre-stressed spring of electromagnetic clutch and electromagnetic brake |
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| CN (1) | CN102359512A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2147386Y (en) * | 1992-12-28 | 1993-11-24 | 褚惠南 | Electromagnetic clutch |
| JP2000120727A (en) * | 1998-10-16 | 2000-04-25 | Mita Ind Co Ltd | Electromagnetic clutch |
| CN2482606Y (en) * | 2001-07-20 | 2002-03-20 | 韩伍林 | Electromagnetic friction clutch |
| CN202188039U (en) * | 2011-09-02 | 2012-04-11 | 成都瑞迪机械实业有限公司 | High-precision installation device of prestressed spring of electromagnetic clutch and electromagnetic brake |
-
2011
- 2011-09-02 CN CN2011102582164A patent/CN102359512A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2147386Y (en) * | 1992-12-28 | 1993-11-24 | 褚惠南 | Electromagnetic clutch |
| JP2000120727A (en) * | 1998-10-16 | 2000-04-25 | Mita Ind Co Ltd | Electromagnetic clutch |
| CN2482606Y (en) * | 2001-07-20 | 2002-03-20 | 韩伍林 | Electromagnetic friction clutch |
| CN202188039U (en) * | 2011-09-02 | 2012-04-11 | 成都瑞迪机械实业有限公司 | High-precision installation device of prestressed spring of electromagnetic clutch and electromagnetic brake |
Non-Patent Citations (1)
| Title |
|---|
| 卜东生: "波浪型板簧的性能测试与疲劳试验研究", 《理化检验（物理分册）》, vol. 30, no. 6, 31 December 1994 (1994-12-31), pages 24 - 28 * |
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Application publication date: 20120222 |