A kind of high speed sheet electromagnetic brake
Technical field
The present invention relates to technical field of motors, specially a kind of power loss braking that can realize braking function at high speed
Device, is used for and Lock function is braked and powered off to electric drilling match, the energization solution of implementation mechanism.
Background technique
Electromagnetic brake mainly and electric drilling match, is widely used in each industrial circle, there is structure to be simple and convenient to operate,
Light-weight advantage.Powerless magnetic brake can provide certain braking moment when power is off, realize the function of lock-bit, prevent
Mechanism maloperation when power is off.The problems such as domestic electromagnetic brake there are types single, poor reliability, short service life.
Applied to the powerless magnetic brake in weaponry field, on the other hand one side volume and limited mass need
Tolerance high speed conditions under power on/off state.Therefore, developing compact-sized, high-revolving powerless magnetic brake has
Significance.
Summary of the invention
In order to solve the problems existing in the prior art, the present invention propose it is a kind of it is compact-sized, can be achieved to work under high revolving speed
Sheet electromagnetic brake.
The technical solution of the present invention is as follows:
A kind of high speed sheet electromagnetic brake, it is characterised in that: including casing, moving component, stationary parts, end
Lid and output shaft;
The output shaft is cooperated by bearing and casing and end cap;
The moving component includes dynamic friction disk, leaf spring, terminal pad, screw;
The terminal pad is fixedly and coaxially connected with output shaft, can be rotated synchronously;Described terminal pad one end face has concentric
Annulus protrusion, the dynamic friction disk is mounted in the concentric loop protrusion of terminal pad and clearance fit, and dynamic friction disk is along mating surface
It can axially move;Leaf spring is fixedly installed between dynamic friction disk and terminal pad;
The stationary parts is fixed on casing internal;
The stationary parts includes static friction disk, magnet steel, magnetic guiding loop, copper coil, positioning retainer ring;
The magnetic guiding loop is hollow stepped shaft structure, has insulating layer in magnetic conduction ring outer surface, copper coil is exhausted along magnetic guiding loop
Edge layer outer circle circumferential direction coiling and dipping lacquer, magnet steel are fixed on magnetic guiding loop inner face;Magnetic guiding loop passes through the together with magnet steel and copper coil
Two positioning retainer rings are fitted in casing internal;Static friction disk is fixed on the first positioning retainer ring, and the first positioning retainer ring is together with static friction
Disk is fitted in casing along the periphery of magnetic guiding loop.
Further preferred embodiment, a kind of high speed sheet electromagnetic brake, it is characterised in that: leaf spring passes through two
The axial bolts of 180 ° of distributions are fixed in terminal pad, and are fixed on by two 180 ° of distribution axial bolts of opposite direction dynamic
On frictional disk, and four screws are evenly distributed with for 90 ° in a circumferential direction.
Further preferred embodiment, a kind of high speed sheet electromagnetic brake, it is characterised in that: the terminal pad side of passing through
Shape hole is fixedly connected with rectangular output shaft.
Further preferred embodiment, a kind of high speed sheet electromagnetic brake, it is characterised in that: magnetic conduction ring surface is viscous
One layer of insulating paper is connect, copper coil carries out dipping lacquer after the completion of insulating paper outer circle circumferential direction coiling, coiling.
Further preferred embodiment, a kind of high speed sheet electromagnetic brake, it is characterised in that: magnet steel passes through DG-2
Glue is bonded and is heating and curing on magnetic guiding loop.
Further preferred embodiment, a kind of high speed sheet electromagnetic brake, it is characterised in that: the second positioning retainer ring
Positioning of the casing internal as magnetic guiding loop is arrived by cold pressing, by magnetic guiding loop together with magnet steel and copper coil along the second positioning retainer ring
Disc is cold-pressed in casing.
Further preferred embodiment, a kind of high speed sheet electromagnetic brake, it is characterised in that: static friction disk passes through
DG-2 glue is bonded and is heating and curing on the first positioning retainer ring.
Further preferred embodiment, a kind of high speed sheet electromagnetic brake, it is characterised in that: dynamic friction disk and quiet
Frictional disk is all made of wear-resistant material;Casing, end cap, output shaft use un-conducted magnetic material, and the first positioning retainer ring uses permeability magnetic material;
Under on-position, copper coil no power, magnet steel is interior in magnetic guiding loop and the first positioning retainer ring to form axial magnetic field,
Suction is generated to dynamic friction disk, suction is greater than leaf spring deformation to the pulling force of dynamic friction disk, keeps dynamic friction disk and static friction disk complete
Fitting;
Under non-brake state, copper coil is powered, and dynamic friction is eliminated in the magnetic field that the field weakening magnet steel that copper coil generates generates
The suction-combining force between disk and static friction disk, dynamic friction disk reset under the action of leaf spring, separate with static friction disk.
Beneficial effect
The present invention provides a kind of sheet electromagnetic brake that can be worked at high speed, which includes movement portion
Part (dynamic friction disk, leaf spring, terminal pad, screw), stationary parts (static friction disk, magnet steel, magnetic guiding loop, copper coil, positioning retainer ring),
End cap, output shaft etc..The operation is stable under high revolving speed in order to guarantee brake 12000rpm, structure design aspect are defeated in brake
Shaft both ends increase bearing;To guarantee that dynamic friction disk does not break ring flat-plate spring under high speed rotation, by between concentric loop in design
The guide rod that the mode of gap cooperation is axially moved terminal pad as dynamic friction disk, this kind of structure design also can effectively avoid centrifugal force
The influence to dynamic friction disk radial position is acted on, to guarantee that brake can work normally under complex external force effect.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the cross-sectional view of this patent brake state;
Fig. 2 is the cross-sectional view of the non-brake state of this patent brake;
Fig. 3 is the outside drawing of this patent;
Fig. 4 is dynamic friction disk, leaf spring, terminal pad structure chart.
Wherein: 1 end cap, 2 bearings, 3 terminal pads, 4 leaf springs, 5 dynamic friction disks, 6 screws, 7 static friction disks, 8 first positioning gears
Circle, 9 second positioning retainer rings, 10 magnet steel, 11 copper coils, 12 magnetic guiding loops, 13 bearings, 14 output shafts, 15 casings.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
Furthermore, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Therefore, define " first ", the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
Combined with Figure 1 and Figure 2, this patent brake by end cap 1, bearing 2, terminal pad 3, leaf spring 4, dynamic friction disk 5, screw 6,
Static friction disk 7, the first positioning retainer ring 8, the second positioning retainer ring 9, magnet steel 10, copper coil 11, magnetic guiding loop 12, bearing 13, output shaft
14, casing 15 forms.
In conjunction with Fig. 1,12 surface of magnetic guiding loop is bonded one layer of insulating paper, and copper coil 11 is along insulating paper outer circle circumferential direction coiling.Around
Dipping lacquer is carried out after the completion of system.Magnet steel 10 is bonded by DG-2 glue and is heating and curing on magnetic guiding loop 12.Second positioning retainer ring 9 is logical
Supercooling is pressed onto positioning of the casing internal as magnetic guiding loop.By after solidification magnet steel 10, magnetic guiding loop 12, copper coil 11 along second positioning
The inner headed face of retaining ring 9 is cold-pressed in casing 15.Static friction disk 7 is bonded by DG-2 glue and is heating and curing in the first positioning retainer ring
On 8, by after solidification static friction disk 7, the first positioning retainer ring 8 along magnetic guiding loop 12 periphery indentation casing 15 along.End cap 1 and machine
Shell 15 is fixed by 4 cross recessed countersunk head sscrews that radially even circumferential is distributed.Pass through bearing between output shaft 14 and end cap 1
2 support rotations, output shaft 14 and casing 15 are rotated by the support of bearing 13.
In conjunction with Fig. 4, leaf spring 4 is fixed in terminal pad 3 by two axial bolts 6, passes through two axial directions of opposite direction
Screw 6 is fixed on dynamic friction disk 5.Dynamic friction disk 5 and terminal pad 3 are by concentric loop clearance fit, and dynamic friction disk 5 is along cooperation
Face axially moves.Terminal pad 3 is fixed by square hole and rectangular output shaft 14, makes rotating motion together.
In conjunction with Fig. 1, under on-position, dynamic friction disk 5 is bonded completely with static friction disk 7, will under the action of stiction
Output shaft 14 locks, and dynamic friction disk 5 and static friction disk 7 are all made of wear-resistant material.Casing 15, end cap 1, output shaft 14 are used and are not led
Magnetic material.First positioning retainer ring 8 selects permeability magnetic material.Magnetic guiding loop 12 carries out electroplating processes using No. 10 steel.Under on-position, copper
11 no power of coil, magnet steel 10 is interior in magnetic guiding loop 12 and the first positioning retainer ring 8 to form axial magnetic field, produces to dynamic friction disk 5
Raw suction, the suction are greater than the deformation of leaf spring 4 to the pulling force of dynamic friction disk 5.
In conjunction with Fig. 2, under non-brake state, distance is 0.5mm between dynamic friction disk 5 and static friction disk 7, and moving component is (dynamic
Frictional disk 5, leaf spring 4, terminal pad 3, screw 6) it is rotated simultaneously with output shaft 14.Under non-brake state, copper coil 11 is powered, copper wire
The suction-combining force between dynamic friction disk 5 and static friction disk 7 is eliminated in the magnetic field that the field weakening magnet steel 10 that circle 11 generates generates, dynamic to rub
It wipes disk 5 to reset under the action of leaf spring 4, be separated at a distance from about 0.5mm with static friction disk 7.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.