CN209948926U

CN209948926U - Brushless DC motor for key making machine

Info

Publication number: CN209948926U
Application number: CN201920987890.8U
Authority: CN
Inventors: 冯振富
Original assignee: NEW MARTIN (JIANGMEN) ELECTRIC TECHNOLOGY Co Ltd
Current assignee: NEW MARTIN (JIANGMEN) ELECTRIC TECHNOLOGY Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-01-14
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a brushless DC motor for a key preparation machine, which comprises a shell, a front end cover, a rear end cover, a rotor assembly and a stator assembly, wherein the rotor assembly comprises a rotating shaft and a rotor core, the stator assembly comprises a stator core and a stator winding, the rotating shaft is provided with an induction magnetic ring with the same pole number as that of the rotor assembly, the rear end cover is also provided with a Hall fixing frame, and the Hall fixing frame is provided with a Hall sensor; the rotating shaft is provided with the induction magnetic ring, the number of poles of the induction magnetic ring is the same as that of the rotor assembly, and the magnetic pole position of the induction magnetic ring is detected through the Hall sensor, so that the position of the rotor is detected as the basis of closed loop control and phase sequence control of the rotating speed of the motor, the blocking and stopping phenomenon in the starting process of the motor and the intermittent phenomenon in the rotating process can be effectively reduced, the running noise and the energy consumption are reduced, and the service life is prolonged.

Description

Brushless DC motor for key making machine

Technical Field

The utility model relates to the field of electric machines, in particular to brushless DC motor that machine was prepared to key.

Background

The key making machine is an ideal machine special for repairing keys. The key making machine has the characteristics of small investment, good benefit, small volume, light weight, convenient movement, convenient maintenance, low energy consumption, flexible and simple operation and the like, and is particularly suitable for expanding the service range in the industries of urban and rural mobile stall, hardware, bicycle, motorcycle, automobile repair and the like. The key preparation machine in the prior art uses a traditional brush direct current motor, has the problems of large noise, large energy consumption, high temperature rise, short service life and the like during working, and has a blocking phenomenon during starting of the motor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a brushless DC motor that machine was prepared to key, can effectively reduce the card pause or pause phenomenon among the motor start-up process, noise reduction and energy consumption, extension working life.

The main aspect of the utility model provides a brushless DC motor for key making machine, which comprises a casing, a front end cover and a rear end cover respectively sleeved at the front end and the rear end of the casing, a rotor assembly and a stator assembly sleeved outside the rotor assembly, wherein the rotor assembly comprises a rotating shaft and a rotor core, the stator assembly comprises a stator core and a stator winding, the inner sides of the front end cover and the rear end cover are respectively provided with a front bearing seat and a rear bearing seat, the front bearing seat and the rear bearing seat are respectively provided with a front bearing and a rear bearing, the rotating shaft respectively passes through the front bearing and the rear bearing, the rotating shaft is also provided with an induction magnetic ring with the same pole number as that of the rotor assembly, the induction magnetic ring is positioned between the rotor core and the rear bearing, the rear end cover is also provided with a Hall fixing frame, the Hall fixing frame is provided with a Hall, the rear end cover is further provided with a motor three-phase line, a Hall signal line, a first wire inlet hole and a second wire inlet hole, the motor three-phase line penetrates through the first wire inlet hole to be electrically connected with the stator winding, and the Hall signal line penetrates through the second wire inlet hole to be electrically connected with the Hall sensor.

The brushless direct current motor at least has the following beneficial effects: the rotating shaft is provided with the induction magnetic ring, the number of poles of the induction magnetic ring is the same as that of the rotor assembly, and the magnetic pole position of the induction magnetic ring is detected through the Hall sensor, so that the position of the rotor is detected, the rotor is transmitted to the controller through a Hall signal line, the closed loop control of the rotating speed of the motor and the basis of phase sequence control are taken as, the blocking and stopping phenomenon in the starting process of the motor and the intermittent phenomenon in the rotating process can be effectively reduced, the running noise and the energy consumption are reduced, and the service life is prolonged.

Preferably, the rotor assembly and the induction magnetic ring are both quadrupoles.

According to the utility model discloses the first aspect a brushless DC motor that machine was prepared to key, be provided with on the rear end cap two with the pivot is the arc hole in the centre of a circle, the hall mount passes through the screw fixation and is in on the arc hole. Set up the arc hole, can adjust the position of hall mount to the position of adjustment hall sensor obtains better and more accurate detection effect.

According to the utility model discloses the first aspect a brushless DC motor that machine was prepared to key, still include the controller, the controller is provided with motor power supply port, hall detection port, is used for the speed governing port be connected with speed adjusting device and is used for the power port be connected with the power, motor power supply port electricity is connected the motor three-phase line, hall detection port electricity is connected hall signal line.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

fig. 1 is a schematic structural diagram of a brushless dc motor for a key making machine according to an embodiment of the present invention;

fig. 2 is a schematic side view of a brushless dc motor for a key making machine according to an embodiment of the present invention;

fig. 3 is a schematic rear end view of a brushless dc motor for a key making machine according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a controller of a brushless dc motor for a key making machine according to an embodiment of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not 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.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 3, an embodiment of the present invention provides a brushless dc motor for a key making machine, including a housing 10, a front end cap 20 and a rear end cap 30 respectively fitted at front and rear ends of the housing 10, a rotor assembly 40, and a stator assembly 50 fitted outside the rotor assembly 40, the rotor assembly 40 includes a rotating shaft 41 and a rotor core 42, the stator assembly 50 includes a stator core 51 and a stator winding 52, the front end cap 20 and the rear end cap 30 are respectively provided with a front bearing seat and a rear bearing seat, the front bearing seat and the rear bearing seat are respectively provided with a front bearing and a rear bearing, the rotating shaft 41 respectively passes through the front bearing and the rear bearing, the rotating shaft 41 is further provided with an induction magnetic ring 60 having the same number of poles as that of the rotor assembly 40, the induction magnetic ring 60 is located between the rotor core 42 and the rear bearing, the rear end cap 30 is further provided with a hall fixing frame 70, the hall fixing, the rear end cover 30 is further provided with a motor three-phase line 31, a hall signal line 32, a first wire inlet 33 and a second wire inlet 34, the motor three-phase line 31 penetrates through the first wire inlet 33 to be electrically connected with the stator winding 52, and the hall signal line 32 penetrates through the second wire inlet 34 to be electrically connected with the hall sensor 80.

In this embodiment, the rotating shaft 41 is provided with the induction magnetic ring 60, the number of poles of the induction magnetic ring 60 is the same as that of the rotor assembly 40, and then the magnetic pole position of the induction magnetic ring 60 is detected by the hall sensor 80, so as to detect the rotor position, and the detected magnetic pole position is transmitted to the controller through the hall signal line 32, so that the closed loop control of the motor rotating speed and the basis of the phase sequence control can be effectively reduced, the jamming phenomenon and the intermittent phenomenon in the rotating process in the motor starting process can be effectively reduced, the operating noise and the energy consumption can be reduced, and the service life can be prolonged.

Preferably, the rotor assembly 40 and the induction magnet ring 60 are both quadrupole.

Referring to fig. 3, another embodiment of the present invention further provides a brushless dc motor for a key making machine, wherein two arc holes 35 using the rotating shaft 41 as a center are provided on the rear end cover 30, and the hall fixing frame 70 is fixed on the arc holes 35 by screws.

In this embodiment, the rear end cover 30 is provided with the arc-shaped hole 35 to fix the hall fixing frame 70, so that the position of the hall fixing frame 70 can be adjusted by loosening the screw and rotating the rotating shaft 41, and then the position of the hall sensor 80 is adjusted, thereby obtaining a better and more accurate detection effect.

Referring to fig. 4, another embodiment of the present invention further provides a brushless dc motor for a key making machine, wherein the brushless dc motor further comprises a controller 90, the controller 90 is provided with a motor power supply port 91, a hall detection port 92, a speed regulation port 93 for being connected with a speed regulation device, and a power supply port 94 for being connected with a power supply, the motor power supply port 91 is electrically connected with the motor three-phase line 31, and the hall detection port 92 is electrically connected with the hall signal line 32.

In the embodiment, the controller 90 receives a position signal of the rotor through the hall detection port 92, so that reasonable gear starting voltage and rotating speed are debugged, and the jamming phenomenon is reduced; the speed regulation port 93 is used for being connected with a speed regulation device, so that a user can conveniently regulate the rotating speed.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge range of those skilled in the art.

Claims

1. A brushless direct current motor for a key making machine is characterized by comprising a machine shell, a front end cover and a rear end cover which are respectively sleeved at the front end and the rear end of the machine shell, a rotor assembly and a stator assembly sleeved outside the rotor assembly, wherein the rotor assembly comprises a rotating shaft and a rotor core, the stator assembly comprises a stator core and a stator winding, the inner sides of the front end cover and the rear end cover are respectively provided with a front bearing seat and a rear bearing seat, a front bearing and a rear bearing are respectively placed on the front bearing seat and the rear bearing seat, the rotating shaft respectively penetrates through the front bearing and the rear bearing, the rotating shaft is also provided with an induction magnetic ring with the same number of poles as that of the rotor assembly, the induction magnetic ring is positioned between the rotor core and the rear bearing, the rear end cover is also provided with a Hall fixing frame, and the Hall sensor for, the rear end cover is further provided with a motor three-phase line, a Hall signal line, a first wire inlet hole and a second wire inlet hole, the motor three-phase line penetrates through the first wire inlet hole to be electrically connected with the stator winding, and the Hall signal line penetrates through the second wire inlet hole to be electrically connected with the Hall sensor.

2. The brushless dc motor for a key compounding machine according to claim 1, wherein the rotor assembly and the induction magnet ring are four poles.

3. The brushless direct current motor for the key making machine according to claim 1, wherein the rear end cover is provided with two arc-shaped holes centered on the rotating shaft, and the hall holder is fixed to the arc-shaped holes by screws.

4. The brushless direct current motor for the key making machine according to claim 1, further comprising a controller, wherein the controller is provided with a motor power supply port, a hall detection port, a speed regulation port for connecting with a speed regulation device, and a power supply port for connecting with a power supply, the motor power supply port is electrically connected with the three-phase motor line, and the hall detection port is electrically connected with the hall signal line.