CN208601134U - A kind of motor brake structure - Google Patents
A kind of motor brake structure Download PDFInfo
- Publication number
- CN208601134U CN208601134U CN201821190966.6U CN201821190966U CN208601134U CN 208601134 U CN208601134 U CN 208601134U CN 201821190966 U CN201821190966 U CN 201821190966U CN 208601134 U CN208601134 U CN 208601134U
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- spring bearing
- circuit
- permanent
- servo motor
- switching switch
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Abstract
The utility model relates to numerically controlled lathe fields, a kind of motor brake structure is referred in particular to, including mounting base, the screw rod that is rotatably dispose in mounting base, the feed screw nut for being sheathed on screw rod, the movement plate for being connected to feed screw nut and the permanent-magnet servo motor for driving screw rod to rotate；Permanent-magnet servo motor is coupled with three-phase power circuit and short-circuit closed circuit, and switching switch is coupled between three-phase power circuit and short-circuit closed circuit, and switching switch is electrically connected with brake controller；When permanent-magnet servo motor is powered, brake controller control switching switch connection three-phase power circuit, control switching switch disconnects short-circuit closed circuit；When permanent-magnet servo motor powers off, brake controller control switching switch disconnects three-phase power circuit, control switching switch connection short circuit closed circuit.Mechanically operated connection is not present when the motor brake structure of the application brakes to the output shaft of permanent-magnet servo motor, does not need mechanically operated process, keeps brake reaction fast, and controls flexible.
Description
Technical field
The utility model relates to numerically controlled lathe fields, refer in particular to a kind of motor brake structure.
Background technique
The feeding of cutter and the movement of cutter are generally driven by servo motor in numerically controlled lathe, and servo motor passes through drive
Dynamic moving component moves back and forth to realize the feeding of cutter and the movement of cutter.When servo motor power loss, servo motor it is defeated
Shaft will lose torsion, and moving component can generate sliding because of the influence of inertia or self gravity mobile before power-off, pass
The solution of system is to install mechanical brake structure additional on servo motor, and mechanical brake structure carries out the output shaft of servo motor
Brake, is able to rotate the output shaft of servo motor not, to prevent moving component from generating sliding.But mechanical brake structure exists
Mechanically operated connection needs mechanically operated process in brake, and causing appearance to be braked, reaction is slow, control is inflexible existing
As.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of motor brake structures, and the motor brake structure is to permanent magnetism
Mechanically operated connection is not present when the output shaft of servo motor is braked, does not need mechanically operated process, keeps brake anti-
Should be fast, and control flexible.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution:
A kind of motor brake structure comprising mounting base is rotatably dispose in the screw rod of mounting base, is sheathed on the screw rod of screw rod
Nut, the movement plate for being connected to feed screw nut and the permanent-magnet servo motor for driving screw rod to rotate；The permanent magnetic servo electricity
Machine is coupled with three-phase power circuit and short-circuit closed circuit, couples between the three-phase power circuit and the short-circuit closed circuit
There is switching to switch, the switching switch is electrically connected with brake controller；When permanent-magnet servo motor is powered, brake controller control is cut
Switch connection three-phase power circuit is changed, control switching switch disconnects short-circuit closed circuit；When permanent-magnet servo motor powers off, the brake
Vehicle controller control switching switch disconnects three-phase power circuit, control switching switch connection short circuit closed circuit.
Further, the mounting base is additionally provided with the first spring bearing component and the second spring bearing component, screw rod point
Be not rotatably dispose in the first spring bearing component and the second spring bearing component, feed screw nut be located at the first spring bearing component and
Between second spring bearing component.
Further, the first spring bearing component and the second spring bearing component are provided with anticollision glue, anticollision glue
For preventing feed screw nut's direct collision the first spring bearing component or the second spring bearing component.
Further, the mounting base offers accommodation groove, screw rod, feed screw nut, the first spring bearing component and second
Spring bearing component is respectively positioned in accommodation groove.
Further, the motor brake structure further includes shaft coupling, and permanent-magnet servo motor is connect through shaft coupling with screw rod.
Further, the mounting base is also set up there are two guide mechanism is assisted, and two auxiliary guide mechanisms are located at
The two sides of screw rod；The auxiliary guide mechanism includes the guide rail for being set to mounting base and the sliding block for being slideably positioned in guide rail, movement
Plate is connect with sliding block.
Further, the two sides of the guide rail offer card slot；The sliding block offers the cunning for being arranged guide rail
Slot, sliding block are provided with the card convex for buckling card slot, and card convex is located in sliding slot.
Further, the mounting base is provided with several pieces of briquettings, and briquetting is against guide rail, and briquetting is for compressing guide rail.
Further, the movement plate includes the slide plate for being connected to feed screw nut and the row's knife plate for being connected to slide plate.
Further, row's knife plate offers multiple for installing the mounting groove of cutter.
The utility model has the beneficial effects that when permanent-magnet servo motor is powered, brake controller control switching switch connection three
Phase power circuit, control switching switch disconnect short-circuit closed circuit；The rotation of permanent-magnet servo motor task driven screw rod, feed screw nut
It is moved on screw rod, feed screw nut drives movement plate to move together.When permanent-magnet servo motor powers off, the brake controller control
System switching switch disconnects three-phase power circuit, control switching switch connection short circuit closed circuit.Permanent-magnet servo motor is at this time
Short-circuit condition, the coil inside permanent-magnet servo motor form a current loop, and coil is cut inside permanent-magnet servo motor forever
When magnetic magnetic induction line, coil just will receive an opposition, due to making permanent-magnet servo motor there are this opposition
Output shaft will not generate rotation due to moving the mobile inertia of plate or moving the self gravity of plate in the event of a power failure, forever
When the output shaft of magnetic servo motor does not rotate, screw rod will not be rotated, and feed screw nut will not move, so the movement after power-off
Plate is not in sliding.Machine is not present when the motor brake structure of the application brakes to the output shaft of permanent-magnet servo motor
The connection of tool transmission, does not need mechanically operated process, keeps brake reaction fast, and controls flexible.
Detailed description of the invention
Fig. 1 is the perspective view of the explosion of the utility model.
Fig. 2 is the circuit diagram of the utility model.
Fig. 3 is the perspective view of the explosion of the auxiliary guide mechanism of the utility model.
Description of symbols:
Mounting base 1, the first spring bearing component 11, the second spring bearing component 12, anticollision glue 13, accommodation groove 14, screw rod
2, feed screw nut 3, movement plate 4, slide plate 41, row's knife plate 42, mounting groove 43, permanent-magnet servo motor 5, three-phase power circuit 51,
Short-circuit closed circuit 52, switching switch 53, brake controller 54, auxiliary guide mechanism 6, guide rail 61, sliding block 62, card slot 63 are sliding
Slot 64, card convex 65, briquetting 66, shaft coupling 7.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made below with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.
As depicted in figs. 1 and 2, a kind of motor brake structure provided by the utility model comprising mounting base 1, rotation are set
It is placed in the screw rod 2 of mounting base 1, the feed screw nut 3 for being sheathed on screw rod 2, the movement plate 4 for being connected to feed screw nut 3 and for driving
The permanent-magnet servo motor 5 that dynamic screw rod 2 rotates；The permanent-magnet servo motor 5 is coupled with three-phase power circuit 51 and short circuit closure electricity
Road 52 is coupled with switching switch 53, the switching switch between the three-phase power circuit 51 and the short-circuit closed circuit 52
53 are electrically connected with brake controller 54；
When permanent-magnet servo motor 5 is powered, the control switching switch 53 of brake controller 54 connects three-phase power circuit 51, control
Switch switch 53 and disconnects short-circuit closed circuit 52；The rotation of 5 task driven screw rod 2 of permanent-magnet servo motor, feed screw nut 3 is in screw rod 2
Upper movement, feed screw nut 3 drive movement plate 4 to move together.
When permanent-magnet servo motor 5 powers off, shown in Fig. 2, the switching switch 53 is in the part of three-phase power circuit 51
Normal open switch, the switching switch 53 is normally closed switch in the part of short-circuit closed circuit 52, so that the brake controller 54
Control switching switch 53 disconnects three-phase power circuit 51, and control switching switch 53 connects short-circuit closed circuit 52.Permanent magnetism is watched at this time
It takes motor 5 and is in short-circuit condition, the coil inside permanent-magnet servo motor 5 forms a current loop, and coil cuts permanent magnetic servo
When permanent magnetism magnetic induction line inside motor 5, coil just will receive an opposition, due to making there are this opposition
The output shaft of permanent-magnet servo motor in the event of a power failure will not because movement plate 4 mobile inertia or move plate 4 itself
Gravity and generate rotation, when the output shaft of permanent-magnet servo motor 5 does not rotate, screw rod 2 will not be rotated, and feed screw nut 3 will not
It is mobile, so the movement plate 4 after power-off is not in sliding.The motor brake structure of the application is to permanent-magnet servo motor 5
Mechanically operated connection is not present when output shaft is braked, does not need mechanically operated process, keeps brake reaction fast, and control
System is flexible.
As shown in Figure 1, the mounting base 1 is additionally provided with the first spring bearing component 11 and the second support in the present embodiment
Bearing assembly 12, screw rod 2 are rotatably dispose in the first spring bearing component 11 and the second spring bearing component 12, feed screw nut respectively
3 between the first spring bearing component 11 and the second spring bearing component 12.
First spring bearing component 11 and the screw rod 2 of 12 pairs of the second spring bearing component rotations play the work of a support
With undertaking radial load.The first spring bearing component 11 and the second spring bearing component 12 play one to feed screw nut 3 simultaneously
The effect of a limit, feed screw nut 3 can only move between the first spring bearing component 11 and the second spring bearing component 12.
As shown in Figure 1, the first spring bearing component 11 and the second spring bearing component 12 are respectively provided in the present embodiment
There is anticollision glue 13, anticollision glue 13 is for preventing 3 the first spring bearing of direct collision component 11 of feed screw nut or the second spring bearing
Component 12.Anticollision glue 13, which plays, protects feed screw nut 3, the first spring bearing component 11 and the second spring bearing component 12 not to be damaged
Bad effect.
As shown in Figure 1, the mounting base 1 offers accommodation groove 14, screw rod 2, feed screw nut 3, first in the present embodiment
Support bearing assembly 11 and the second spring bearing component 12 are respectively positioned in accommodation groove 14.The structure of motor brake structure is set to become compact,
Occupied space is installed to become smaller.
As shown in Figure 1, the motor brake structure further includes shaft coupling 7, and permanent-magnet servo motor 5 is through joining in the present embodiment
Axis device 7 is connect with screw rod 2.Shaft coupling 7 plays the role of transmitting the effect of the torque and overload protection of permanent-magnet servo motor 5.
As shown in figures 1 and 3, in the present embodiment, the mounting base 1 is also set up there are two guide mechanism 6 is assisted, and two auxiliary
Guide mechanism 6 is helped to be located at the two sides of screw rod 2；The auxiliary guide mechanism 6 includes being set to the guide rail 61 of mounting base 1 and sliding
The dynamic sliding block 62 for being set to guide rail 61, movement plate 4 are connect with sliding block 62.Feed screw nut 3 drives movement plate 4 to move together
When, movement plate 4 is slided with movable slider 62 along guide rail 61, and 62 pairs of movement plates 4 of sliding block play the role of slide guide and support, make
Move the smoother of the movement of plate 4.
As shown in figure 3, the two sides of the guide rail 61 offer card slot 63 in the present embodiment；The sliding block 62 opens up
There is the sliding slot 64 for being arranged guide rail 61, sliding block 62 is provided with the card convex 65 for buckling card slot 63, and card convex 65 is located at sliding slot 64
It is interior.After sliding slot 64 is set in guide rail 61, card convex 65 protrudes into card slot 63 sliding block 62, and card convex 65 contradicts the inner wall of card slot 63,
Keep sliding block 62 more firm and smooth when sliding on guide rail 61.
As shown in Figure 1, in the present embodiment, the mounting base 1 is provided with several pieces of briquettings 66, briquetting 66 against guide rail 61,
Briquetting 66 is for compressing guide rail 61.After briquetting 66 compresses guide rail 61, it ensure that guide rail 61 is securely attached to mounting base 1, make to slide
Block 62 can firmly slide on guide rail 61.Specifically, briquetting 66 is rectangular, convenient for the production of batch, guide rail 61 is compressed
Effect is good.The connecting hole that briquetting 66 offers convenient for connected with outer casing.
As shown in Figure 1, the movement plate 4 includes being connected to the slide plate 41 of feed screw nut 3 and being connected in the present embodiment
Row's knife plate 42 of slide plate 41.When needing the processing bit in the row's of cleaning knife plate 42 or replacing different row's knife plates 42, knife need to will be only arranged
Plate 42 is disassembled from slide plate 41, easy to disassemble.If row's knife plate 42 will be directly connected to feed screw nut 3 without slide plate 41,
The position between the row's of correction knife plate 42 and feed screw nut 3 is needed when connection, and installation is made to complicate.Row's knife plate 42 offers more
A mounting groove 43 for being used to install cutter, cutter is through on 43 row's of being firmly installed to knife plate of mounting groove.Preferably, multiple mounting grooves
The 43 equally spacedly row's of being set to knife plates 42, convenient for the installation of cutter.
All technical characteristics in the present embodiment can be freely combined according to actual needs.
Above-described embodiment is the preferable implementation of the utility model, and in addition to this, the utility model can be with other sides
Formula realizes that any obvious replacement is in the protection model of the utility model under the premise of not departing from the technical program design
Within enclosing.
Claims (10)
1. a kind of motor brake structure, it is characterised in that: including mounting base, the screw rod that is rotatably dispose in mounting base, be sheathed on silk
The feed screw nut of bar, the movement plate for being connected to feed screw nut and the permanent-magnet servo motor for driving screw rod to rotate；It is described forever
Magnetic servo motor is coupled with three-phase power circuit and short-circuit closed circuit, the three-phase power circuit and the short-circuit closed circuit
Between be coupled with switching switch, the switching switchs and is electrically connected with brake controller；When permanent-magnet servo motor is powered, brake control
Device control switching switch connection three-phase power circuit, control switching switch disconnect short-circuit closed circuit；Permanent-magnet servo motor power-off
When, the brake controller control switching switch disconnects three-phase power circuit, control switching switch connection short circuit closed circuit.
2. a kind of motor brake structure according to claim 1, it is characterised in that: the mounting base is additionally provided with first
Support bearing assembly and the second spring bearing component, screw rod are rotatably dispose in the first spring bearing component and the second spring bearing respectively
Component, feed screw nut is between the first spring bearing component and the second spring bearing component.
3. a kind of motor brake structure according to claim 2, it is characterised in that: the first spring bearing component and
Two spring bearing components are provided with anticollision glue, anticollision glue for prevent feed screw nut's direct collision the first spring bearing component or
Second spring bearing component.
4. a kind of motor brake structure according to claim 3, it is characterised in that: the mounting base offers accommodation groove,
Screw rod, feed screw nut, the first spring bearing component and the second spring bearing component are respectively positioned in accommodation groove.
5. a kind of motor brake structure according to claim 1, it is characterised in that: the motor brake structure further includes connection
Axis device, permanent-magnet servo motor are connect through shaft coupling with screw rod.
6. a kind of motor brake structure according to claim 1, it is characterised in that: the mounting base is also set up there are two auxiliary
Guide mechanism is helped, two auxiliary guide mechanisms are located at the two sides of screw rod；The auxiliary guide mechanism includes being set to installation
The guide rail of seat and the sliding block for being slideably positioned in guide rail, movement plate are connect with sliding block.
7. a kind of motor brake structure according to claim 6, it is characterised in that: the two sides of the guide rail offer
Card slot；The sliding block offers the sliding slot for being arranged guide rail, and sliding block is provided with the card convex for buckling card slot, and card convex, which is located at, to be slided
In slot.
8. a kind of motor brake structure according to claim 6, it is characterised in that: the mounting base is provided with several pieces of pressures
Block, briquetting is against guide rail, and briquetting is for compressing guide rail.
9. a kind of motor brake structure according to claim 1, it is characterised in that: the movement plate includes being connected to silk
The slide plate of stem nut and the row's knife plate for being connected to slide plate.
10. a kind of motor brake structure according to claim 9, it is characterised in that: row's knife plate offers multiple use
In the mounting groove of installation cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821190966.6U CN208601134U (en) | 2018-07-25 | 2018-07-25 | A kind of motor brake structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821190966.6U CN208601134U (en) | 2018-07-25 | 2018-07-25 | A kind of motor brake structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208601134U true CN208601134U (en) | 2019-03-15 |
Family
ID=65671061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821190966.6U Active CN208601134U (en) | 2018-07-25 | 2018-07-25 | A kind of motor brake structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208601134U (en) |
-
2018
- 2018-07-25 CN CN201821190966.6U patent/CN208601134U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: Room 115, Building 17, 911 Jian'an Road, Chang'an Town, Dongguan City, Guangdong Province Patentee after: Dongguan Huijie CNC Lathe Co., Ltd. Address before: 523000 First Floor 102, No. 10 Panfu Nan Street, Xiagang Community, Chang'an Town, Dongguan City, Guangdong Province Patentee before: Dongguan Huijie CNC Lathe Co., Ltd. |
|
| CP02 | Change in the address of a patent holder |