CN115076259A - Electromagnetic brake with rotor structure - Google Patents
Electromagnetic brake with rotor structure Download PDFInfo
- Publication number
- CN115076259A CN115076259A CN202210794231.9A CN202210794231A CN115076259A CN 115076259 A CN115076259 A CN 115076259A CN 202210794231 A CN202210794231 A CN 202210794231A CN 115076259 A CN115076259 A CN 115076259A
- Authority
- CN
- China
- Prior art keywords
- brake
- brake disc
- movable plate
- rotor structure
- disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/0006—Noise or vibration control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Compositions of linings; Methods of manufacturing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
- F16D2121/22—Electric or magnetic using electromagnets for releasing a normally applied brake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/58—Mechanical mechanisms transmitting linear movement
- F16D2125/582—Flexible element, e.g. spring, other than the main force generating element
Abstract
The invention relates to the technical field of brakes, and provides an electromagnetic brake with a rotor structure, which comprises a stator, a movable plate and a brake disc, wherein the movable plate is arranged between the stator and the brake disc, the brake disc is provided with a mounting hole, a screw is screwed into the mounting hole to be connected with a motor shaft, and a plurality of point-type contact brake friction pieces are uniformly arranged on the end surface of the brake disc in a surrounding and spaced mode. The invention can stabilize torque, reduce noise, simplify structure, save cost, reduce rotational inertia and reduce rotation clearance.
Description
Technical Field
The invention relates to the technical field of brakes, in particular to an electromagnetic brake with a rotor structure.
Background
The electromagnetic brake is a connector for transmitting the torque force of the driving side to the driven side, can be freely combined, separated or braked according to requirements, and has the advantages of compact structure, simplicity in operation, sensitive response, long service life, reliability in use and easiness in realizing remote control. The common ultrathin electromagnetic brake is provided with a stator, a brake disc, a movable plate and the like, wherein a rotor is of a square wheel structure and is mainly connected with a motor shaft through a spline sleeve and other equiaxial connecting pieces of the brake to realize a braking function; in addition, the brake disc is provided with an annular friction plate which covers the end face, the brake plate is electrically controlled to be in contact with the brake disc through on-off of the electromagnetic coil to perform friction braking and separation, the brake plate is in contact with the brake disc in a surface-to-surface mode, the requirement on parallelism between the brake disc and the movable plate is high, and the brake noise is larger when the brake disc is in surface contact.
Disclosure of Invention
The invention aims to provide an electromagnetic brake with a rotor structure, which has the advantages of lower brake noise, smaller rotary back clearance and more stable motor output torque.
The embodiment of the invention is realized by the following technical scheme: the electromagnetic brake with the rotor structure comprises a stator, a movable plate and a brake disc, wherein the movable plate is arranged between the stator and the brake disc, a mounting hole is formed in the brake disc, a screw is screwed into the mounting hole to be connected with a motor shaft, and a plurality of point type contact brake friction pieces are arranged on the end face of the brake disc in a surrounding mode at even intervals.
Furthermore, the brake disc further comprises a flange disc, the brake disc is arranged between the flange disc and the movable plate, a through hole is formed in the brake disc and used for the brake friction piece to penetrate, the brake friction piece protrudes from two sides of the brake disc, and the brake friction piece can move along the axial direction of the through hole.
Furthermore, install the position sleeve on the stator terminal surface, the outer fringe side of movable plate is seted up and is used for the card to go into the draw-in groove of position sleeve, just the position sleeve with ring flange screw thread fixed connection.
Further, the distance from the brake friction piece to the axis of the brake disc is larger than the distance from the mounting hole to the axis of the brake disc.
Further, the distance between the mounting hole and the axis of the brake disc is smaller than the diameters of inner holes of the movable plate and the flange plate.
Further, the axial clearance distance between the movable plate and the flange plate is larger than the length of the brake friction piece.
Furthermore, the brake friction piece is made of a low-metal mixed type material.
Furthermore, the brake friction piece is of a linear strip-shaped body structure.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects: compared with the prior art, the brake is fixed with the shaft shoulder of the motor shaft by the screw screwed in through the mounting hole on the brake disc, a shaft sleeve is omitted, the structure is simplified, the rotational inertia is smaller, the output torque is more stable, multi-point contact braking is carried out through the brake friction piece on the brake disc, the contact area between the friction plate and the movable plate is reduced, the parallelism requirement between the brake disc and the movable plate is reduced, and the working noise of the brake is lower.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic axial structure diagram of an electromagnetic brake with a rotor structure according to an embodiment of the present invention;
FIG. 2 is a schematic view showing a brake disk coupling structure of an electromagnetic brake of a rotor structure according to the present invention;
FIG. 3 is a schematic axial assembly of the electromagnetic brake of the rotor structure of the present invention;
fig. 4 is a schematic view of a connection structure between an electromagnetic brake and a motor shaft of a rotor structure according to the present invention.
Icon: 1-stator, 2-flange plate, 3-brake disc, 31-mounting hole, 4-brake friction piece, 5-movable plate, 51-clamping groove, 6-positioning sleeve and 7-motor shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Examples
As further described below with reference to the specific embodiment, referring to fig. 1-4, this embodiment is an electromagnetic brake with a rotor structure, which includes a stator 1, a moving plate 5 and a brake disc 3, the moving plate 5 is disposed between the stator 1 and the brake disc 3, the brake disc 3 is provided with a mounting hole 31, the motor shaft 7 is connected with the mounting hole 31 by screwing a screw, and the brake friction members 4 in point contact are uniformly arranged on the end surface of the brake disc 3, specifically, the invention omits a shaft sleeve of the conventional brake, and the shaft sleeve is connected with the motor shaft 7 by a way of screwing the brake disc 3 into the screw from the mounting hole 31, the motor shaft 7 passes through the middle of the brake, the shoulder of the motor shaft is fixed with the brake disc 3, the motor shaft 7 drives the brake disc 3 to rotate when rotating, the torque of the motor is more stable, and when the motor operates at high speed, compared with the traditional disc friction plate, the requirement on parallelism between the movable plate 5 and the brake disc 3 is lower, the noise generated by point type friction contact is smaller, the friction area is reduced, the control of torque is easier, and the brake is very suitable for being applied to the fields of cooperative robots, industrial robots and the like, the control precision is more accurate, and it is worth to say that, compared with the traditional square wheel structure brake, a shaft sleeve (namely the spline sleeve) between a motor shaft 7 and a rotor of the brake disc 3 is omitted, the motor shaft 7 can have a larger diameter, and the motor can have higher performance.
The brake disc 3 is arranged between the flange disc 2 and the movable plate 5, a through hole is formed in the brake disc 3 for the brake friction piece 4 to penetrate, so that the brake friction piece 4 protrudes from two sides of the brake disc 3, the brake friction piece 4 can move along the axial direction of the through hole, a positioning sleeve 6 is installed on the end face of the stator 1, a clamping groove 51 for clamping the positioning sleeve 6 is formed in the outer edge side of the movable plate 5, the positioning sleeve 6 is fixedly connected with the flange disc 2 through threads, the brake friction piece 4 is of a linear strip-shaped body structure and can be a cylinder, a cuboid, a waist-shaped cylinder, a polygonal cylinder or a slat, specifically, the positioning sleeve 6 is used for connecting the stator 1 and the flange disc 2 to arrange the movable plate 5 and the brake disc 3 in a gap between the movable plate 5 and the brake disc 3, when an electromagnetic coil in the stator 1 is electrified, the movable plate 5 moves axially, the clamping groove 51 of the movable plate 5 slides with the positioning sleeve 6, the positioning sleeve 6 has a certain guiding function, the movable plate 5 can be pressed against the cylindrical brake friction member 4, two ends of the brake friction member 4 are respectively pressed and rubbed with the flange 2 and the end surface of the movable plate 5, so that the deceleration braking is realized, however, when the movable plate 5 is reset, the contact between the brake friction member 4 and the movable plate 5 is released, the brake friction member 4 is not pressed, so that the brake friction member does not have much friction with the end surface of the flange 2, the contact surface is small and does not have large noise, along with the rotation of the motor shaft 7, the brake friction piece 4 can do axial displacement in the through hole and freely move slightly away from the end surface of the flange plate 2 for a little clearance, simultaneously, because the size difference between the through hole and the brake friction piece 4 is small, the clearance between the moving plate 5 and the flange 2 is not large enough to allow the brake friction member 4 to fall out of the through hole during rotation of the motor shaft 7 while ensuring its movability.
The distance from the brake friction member 4 to the axis of the brake disc 3 in this embodiment is greater than the distance from the mounting hole 31 to the axis of the brake disc 3, specifically, the setting is that the position of the brake friction member 4 is located on the outer edge side of the brake disc 3, so as to ensure that the motor shaft 7 can be connected with the mounting hole 31 and pass through, and both ends of the brake friction member 4 can be contacted to realize the braking function, and it is worth explaining that the hole shape of the inner hole in the middle of the brake disc 3 is not limited to the circular hole shown in the drawings, but also can be a spline hole, a square hole or a special-shaped hole, etc., and the brake disc is not limited to a disc type, and the brake disc can be a conventional L-shaped brake disc structure with a boss.
The distance from the mounting hole 31 to the axis of the brake disc 3 in this embodiment is smaller than the diameters of the inner holes of the movable plate 5 and the flange plate 2, and specifically, it is ensured that the motor shaft 7 can pass through the brake (i.e., pass through the stator 1, the movable plate 5 and the flange plate 2), and only the mounting hole 31 leaking out of the brake disc 3 and the shoulder of the motor shaft 7 are fixed by screws.
In the embodiment, the axial gap distance between the movable plate 5 and the flange 2 is greater than the length of the brake friction member 4, specifically, firstly, the gap between the movable plate 5 and the flange 2 needs to ensure that the normal braking and separation can be realized, i.e., energized and de-energized, the movement of the movable plate 5 can be switched between contact and non-contact with the brake friction member 4, meanwhile, the size of the gap is not too large, otherwise, the brake friction piece 4 may fall off from the through hole in the rotation process of the motor, because the size processing of the motor shaft 7 has difference, the length of the shaft shoulder is in a tolerance range, ideally, the lengths of the brake friction piece 4 at the two sides of the brake disc 3 are equal, however, due to the problem of the machining size of the installed motor shaft 7, the motor shaft 7 can drive the brake disc 3 to have a certain axial displacement adjusting function in the axial direction, that is, the size of the axial displacement of the motor shaft 7, that is, the length of the brake friction member 4 is determined.
The brake friction member 4 in this embodiment is made of a low-metal mixed material, specifically, the low-metal mixture type brake pad mainly uses ferrous metal and non-ferrous metal within 10% as reinforcing fibers, and has moderate hardness, good braking comfort, high braking sensitivity, and reduced risk of braking noise with high-speed resonance parameters, and is very suitable for being used for a robot to control a rotating arm.
Based on foretell stopper structure, overall structure is thinner, synthesizes multiple advantage, and extremely be applicable to the robot control and use.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides an electromagnetic brake of rotor structure, includes stator (1), movable plate (5) and brake disc (3), movable plate (5) are located stator (1) with between brake disc (3), its characterized in that:
the brake disc (3) is provided with a mounting hole (31), a screw is screwed into the mounting hole (31) to be connected with a motor shaft, and a plurality of point-type contact brake friction pieces (4) are arranged on the end face of the brake disc (3) in a surrounding and uniformly spaced mode.
2. An electromagnetic brake for a rotor structure according to claim 1, characterized in that: still include ring flange (2), brake disc (3) are located ring flange (2) and between movable plate (5), it is used for to have seted up the through hole on brake disc (3) brake friction spare (4) penetrate, make brake friction spare (4) are followed brake disc (3) both sides protrusion, just brake friction spare (4) can be followed the axial displacement of through hole.
3. An electromagnetic brake for a rotor structure according to claim 2, characterized in that: install position sleeve (6) on stator (1) terminal surface, the outer fringe side of movable plate (5) is seted up and is used for the card to go into draw-in groove (51) of position sleeve (6), just position sleeve (6) with ring flange (2) screw thread fixed connection.
4. A rotor structure electromagnetic brake as claimed in claim 3, characterized in that: the distance from the brake friction piece (4) to the axis of the brake disc (3) is larger than the distance from the mounting hole (31) to the axis of the brake disc (3).
5. An electromagnetic brake for a rotor structure as defined in claim 4, characterized in that: the distance between the mounting hole (31) and the axis of the brake disc (3) is smaller than the diameters of the inner holes of the movable plate (5) and the flange plate (2).
6. An electromagnetic brake for a rotor structure as defined in claim 5, characterized in that: the axial clearance distance between the movable plate (5) and the flange plate (2) is greater than the length of the brake friction piece (4).
7. An electromagnetic brake for a rotor structure according to claim 1, characterized in that: the brake friction piece (4) is made of a low-metal mixed type material.
8. An electromagnetic brake of a rotor structure according to any one of claims 1-7, characterized in that: the brake friction piece (4) is of a linear strip structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210794231.9A CN115076259A (en) | 2022-07-07 | 2022-07-07 | Electromagnetic brake with rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210794231.9A CN115076259A (en) | 2022-07-07 | 2022-07-07 | Electromagnetic brake with rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115076259A true CN115076259A (en) | 2022-09-20 |
Family
ID=83258032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210794231.9A Pending CN115076259A (en) | 2022-07-07 | 2022-07-07 | Electromagnetic brake with rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115076259A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116967760A (en) * | 2023-09-20 | 2023-10-31 | 成都超德创科技有限公司 | Automatic assembly equipment that electromagnetic brake used |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008236996A (en) * | 2007-03-23 | 2008-10-02 | Yaskawa Electric Corp | Brake rotor, its electromagnetic brake, and motor with electromagnetic brake using the same |
| JP2011169381A (en) * | 2010-02-17 | 2011-09-01 | Sinfonia Technology Co Ltd | Electromagnetic coupling device |
| CN204852111U (en) * | 2015-07-30 | 2015-12-09 | 王攀 | Shock attenuation brake block |
| CN107614920A (en) * | 2015-12-07 | 2018-01-19 | 安徽大富重工机械有限公司 | The preparation method of ceramic frication material, vehicle brake-holder block and vehicle brake-holder block |
| CN108278286A (en) * | 2017-12-06 | 2018-07-13 | 桐庐宇鑫汽配有限公司 | A kind of lightweight integral type brake block and its friction material |
| WO2018141480A1 (en) * | 2017-01-31 | 2018-08-09 | Sew-Eurodrive Gmbh & Co. Kg | Electromagnetically actuatable brake assembly for braking a shaft and electric motor having such a brake assembly |
| CN211314912U (en) * | 2019-10-18 | 2020-08-21 | 台州赫兹电气有限公司 | Electromagnetic power-off brake |
| CN111981060A (en) * | 2020-08-24 | 2020-11-24 | 浙江英洛华赫兹电气有限公司 | Electromagnetic power-off brake with high reliability |
-
2022
- 2022-07-07 CN CN202210794231.9A patent/CN115076259A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008236996A (en) * | 2007-03-23 | 2008-10-02 | Yaskawa Electric Corp | Brake rotor, its electromagnetic brake, and motor with electromagnetic brake using the same |
| JP2011169381A (en) * | 2010-02-17 | 2011-09-01 | Sinfonia Technology Co Ltd | Electromagnetic coupling device |
| CN204852111U (en) * | 2015-07-30 | 2015-12-09 | 王攀 | Shock attenuation brake block |
| CN107614920A (en) * | 2015-12-07 | 2018-01-19 | 安徽大富重工机械有限公司 | The preparation method of ceramic frication material, vehicle brake-holder block and vehicle brake-holder block |
| WO2018141480A1 (en) * | 2017-01-31 | 2018-08-09 | Sew-Eurodrive Gmbh & Co. Kg | Electromagnetically actuatable brake assembly for braking a shaft and electric motor having such a brake assembly |
| CN108278286A (en) * | 2017-12-06 | 2018-07-13 | 桐庐宇鑫汽配有限公司 | A kind of lightweight integral type brake block and its friction material |
| CN211314912U (en) * | 2019-10-18 | 2020-08-21 | 台州赫兹电气有限公司 | Electromagnetic power-off brake |
| CN111981060A (en) * | 2020-08-24 | 2020-11-24 | 浙江英洛华赫兹电气有限公司 | Electromagnetic power-off brake with high reliability |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116967760A (en) * | 2023-09-20 | 2023-10-31 | 成都超德创科技有限公司 | Automatic assembly equipment that electromagnetic brake used |
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