CN212627551U

CN212627551U - Initial accurate positioning device of PMSM's photoelectric encoder

Info

Publication number: CN212627551U
Application number: CN202021213460.XU
Authority: CN
Inventors: 姜晓明
Original assignee: Hangzhou Caobao Technology Co ltd
Current assignee: Hangzhou Caobao Technology Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-02-26
Anticipated expiration: 2030-06-28

Abstract

The utility model discloses a PMSM's photoelectric encoder's initial accurate positioning device, including the mounting panel, mounting panel laminating motor main part, a plurality of reference columns of mounting panel edge-mount, the sealed shell of mounting panel laminating, the sealed shell is opened there are a plurality of locating holes, reference column joint locating hole, install the motor shaft in the motor main part, the motor shaft runs through the mounting panel and cup joints the axle sleeve, the rotary tank has all been opened at the middle part of mounting panel and sealed shell, axle sleeve both ends joint rotary tank, axle sleeve outer wall installation code wheel, the edge of code wheel is opened there is the grid, it has the constant head tank to open on the mounting panel, joint locating plate in the constant head tank, install the light source on the locating plate, sealed. The light source passes through locating plate and constant head tank location connection, and the sealed shell passes through locating hole and reference column location connection with the mounting panel for closing plate and mounting panel coaxial positioning, axle sleeve both ends joint are in the rotary tank, and the code wheel is with the mounting panel coaxial positioning, guarantees the light source perpendicular to code wheel, and light source light is just to the grid, ensures photoelectric encoder's accurate response.

Description

Initial accurate positioning device of PMSM's photoelectric encoder

Technical Field

The utility model relates to a permanent magnet synchronous motor technical field specifically is a PMSM's photoelectric encoder's initial accurate positioning device.

Background

A permanent magnet synchronous motor, i.e. a permanent magnet synchronous motor, PMSM for short, refers to a synchronous motor in which a permanent magnet replaces a winding wire for a rotor, for automation control, a photoelectric encoder is often arranged at the tail end of the motor, and the photoelectric encoder is provided with an integral element assembled in advance, the coded disc and the motor shaft need to be connected through other parts such as a coupler, the volume of the device is increased, the encoder and the motor shaft are integrally assembled without the coupler, the volume of the device is reduced, however, when the device is installed, the code wheel is connected with the motor shaft, a positioning mechanism is lacked, the positions of the code wheel, the light source and the light sensitive sheet are difficult to control, grids of the code wheel are often dislocated with the light source and the light sensitive sheet, or the light of the light source inclines and the like, which causes the sensing data of the photoelectric encoder to be wrong, therefore, an initial accurate positioning device of the photoelectric encoder of the PMSM is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PMSM's photoelectric encoder's initial accurate positioning device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a PMSM's photoelectric encoder's initial accurate positioning device, includes the mounting panel, the terminal surface of mounting panel laminating motor main part, a plurality of reference columns of mounting panel edge fixed mounting, the mounting panel closely laminates sealed shell, sealed shell edge is opened there are a plurality of locating holes, reference column joint locating hole, install the motor shaft in the motor main part, the motor shaft runs through the mounting panel and cup joints the axle sleeve, the rotary trough has all been opened at the middle part of mounting panel and sealed shell, two rotary troughs of joint are rotated respectively at the both ends of axle sleeve, axle sleeve outer wall fixed mounting code wheel, the edge of code wheel evenly opens there is the grid, it has the constant head tank to open on the mounting panel in the rotary trough outside, the joint locating plate passes through the bolt fastening in the constant head tank, install the light source on the locating plate, sealed shell department in the rotary trough outside installs.

Preferably, open in reference column and the mounting panel and have the connecting hole that runs through, the spliced pole is cup jointed to the one end that the mounting panel was kept away from to sealed shell, the spliced pole through connection hole is through the terminal surface of helicitic texture connection motor main part.

Preferably, the locating hole is kept away from the one end of mounting panel and is opened there is the shoulder hole, the spliced pole is T type cylinder structure, the big footpath end joint shoulder hole of spliced pole, the path end of spliced pole passes through the terminal surface of helicitic texture connection motor main part.

Preferably, a matched key groove is formed in the inner wall of one side of the shaft sleeve and the outer wall of one side of the motor shaft, a flat key is clamped between the key grooves, and a locking bolt is installed between the other side of the shaft sleeve and the other side of the motor shaft through a threaded structure.

Preferably, it has the mounting groove to open on the sealed shell in the rotary trough outside, card circuit mainboard passes through countersunk head bolt fastening in the mounting groove, photosensitive piece fixed mounting and electric connection circuit mainboard, the photosensitive piece is located the light source directly over, and photosensitive piece and light source are located the both sides of grid respectively.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the motor shaft is directly connected with the shaft sleeve, so that the coded disc is fixed on the motor shaft, the structure is compact due to integrated assembly, and the size of the device is reduced;

2. the light source passes through locating plate and constant head tank positioning connection for light source perpendicular to mounting panel, sealed shell and mounting panel pass through locating hole and reference column positioning connection, make closing plate and mounting panel coaxial positioning connection, axle sleeve both ends joint is in the rotary tank, then code wheel and mounting panel coaxial positioning, so guarantee light source perpendicular to code wheel, then the light of light source is just to the grid, ensures photoelectric encoder's accurate response.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the sealing shell structure of the present invention;

fig. 3 is a schematic view of the main sectional structure of the present invention.

In the figure: the device comprises a motor main body 1, a motor shaft 2, a mounting plate 3, a positioning column 4, a sealing shell 5, a light source 6, a shaft sleeve 7, a coded disc 8, a grid 9, a rotary groove 10, a connecting hole 11, a connecting column 12, a positioning groove 13, a positioning plate 14, a key groove 15, a positioning hole 16, a mounting groove 17, a circuit mainboard 18 and a photosensitive sheet 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a PMSM's photoelectric encoder's initial accurate positioning device, including mounting panel 3, the terminal surface of 3 laminating motor main parts 1 of mounting panel, a plurality of reference columns 4 of 3 marginal fixed mounting of mounting panel, the sealed shell 5 of closely laminating of

mounting panel

3, 5 marginal divisions of sealed shell have a plurality of locating

holes

16, 4 joint locating holes 16 of reference column, install motor shaft 2 on the motor main part 1, motor shaft 2 runs through mounting panel 3 and cup joints axle sleeve 7, mounting panel 3 and sealed shell 5's middle part all opens and has rotary trough 10, two rotary troughs 10 of joint are rotated respectively at the both ends of

axle sleeve

7, 7 outer wall fixed mounting code wheel 8 of axle sleeve, the edge of code wheel 8 evenly opens there is grid 9, it has constant head tank 13 to open on the mounting panel 3 in the rotary trough 10 outside, joint locating plate 14 and pass through the bolt fastening in the constant head tank 13, install light source 6 on the locating plate 14. Motor shaft 2 runs through mounting panel 3 and cup joints with axle sleeve 7, ensures that code wheel 8 is coaxial with motor shaft 2, sealed shell 5 passes through locating hole 16 with mounting panel 3 and is connected with reference column 4 location, and with axle sleeve 7 joint in the rotary slot 10, realize axle sleeve 7, code wheel 8's location, light source 6 passes through locating plate 14 and constant head tank 13 location, then light source 6 light is perpendicular with code wheel 8, ensure that light source 6 light is just to grid 9, guarantee photoelectric encoder's normal response.

Connecting hole 11 that has run through is seted up in reference column 4 and mounting panel 3, the spliced pole 12 is cup jointed to the one end that mounting panel 3 was kept away from to sealed shell 5, spliced pole 12 through connection hole 11 and the terminal surface through helicitic texture connection motor main part 1, the one end that mounting panel 3 was kept away from to locating hole 16 is opened there is the shoulder hole, spliced pole 12 is T type cylinder structure, the big footpath end joint shoulder hole of spliced pole 12, the path end of spliced pole 12 passes through the terminal surface of helicitic texture connection motor main part 1, make sealed shell 5 and mounting panel 3 keep stable connection, and fixed connection and motor main part 1.

Matched with keyway 15 is opened to one side inner wall of axle sleeve 7 and one side outer wall of motor shaft 2, and the flat key of joint between keyway 15, through helicitic texture installation locking bolt between the opposite side of axle sleeve 7 and motor shaft 2, the axle sleeve 7 of being convenient for is fixed with motor shaft 2.

Open on the sealed shell 5 in the revolving chute 10 outside has mounting groove 17, card connecting circuit mainboard 18 and fixed through countersunk head bolt in the mounting groove 17, photosensitive piece 19 fixed mounting and electric connection circuit mainboard 18, then circuit mainboard 18 and mounting groove 17 location are connected, the location installation of the photosensitive piece 19 of being convenient for, photosensitive piece 19 is located light source 6 directly over, and photosensitive piece 19 and light source 6 are located the both sides of grid 9 respectively, then photosensitive piece 19 response sees through the light of the light source 6 of grid, and with induction signal transmission to circuit mainboard 18.

The working principle is as follows: the utility model discloses during the use, 14 joint constant head tanks 13 of locating plate are through the bolt fastening, then light source 6 realizes the location with mounting panel 3 and is connected, 1 terminal surface of 3 laminating motor main parts of mounting panel, motor shaft 2 runs through mounting panel 3 and is connected with axle sleeve 7, and fix a position through keyway 15 and parallel key, through locking bolt fastening, then sealed shell 5 cup joints reference column 4 through locating hole 16, spliced pole 12 through connection hole 11 and the fixed end face of threaded connection motor main part 1, the integration assembly is accomplished, moreover, the steam generator is compact in structure, reduce the device volume, sealed

shell

5 and 3 coaxial positioning of mounting panel this moment, 7 both ends joints of axle sleeve are in the rotary trough 10, then

code wheel

8 and 3 coaxial positioning of mounting panel, so guarantee light source 6 perpendicular to code wheel 8, then light of light source 6 is just to grid 9, ensure photoelectric encoder.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An initial fine positioning device of a PMSM photoelectric encoder comprises a mounting plate (3), and is characterized in that: the terminal surface of mounting panel (3) laminating motor main part (1), a plurality of reference columns (4) of mounting panel (3) edge fixed mounting, mounting panel (3) closely laminate sealed shell (5), sealed shell (5) edge is opened there are a plurality of locating holes (16), reference column (4) joint locating hole (16), install motor shaft (2) on motor main part (1), motor shaft (2) run through mounting panel (3) and cup joint axle sleeve (7), rotary groove (10) have all been opened at the middle part of mounting panel (3) and sealed shell (5), two rotary groove (10) of joint are rotated respectively at the both ends of axle sleeve (7), axle sleeve (7) outer wall fixed mounting code wheel (8), grid (9) have evenly been opened at the edge of code wheel (8), it has constant head tank (13) to open on mounting panel (3) in the rotary groove (10) outside, the positioning groove (13) is internally clamped with a positioning plate (14) and fixed through a bolt, the positioning plate (14) is provided with a light source (6), and a sealing shell (5) at the outer side of the rotary groove (10) is provided with a photosensitive sheet (19).

2. The initial fine positioning apparatus of a PMSM photoelectric encoder as set forth in claim 1, wherein: connecting hole (11) that have run through are seted up in reference column (4) and mounting panel (3), the one end that mounting panel (3) were kept away from in sealed shell (5) cup joints spliced pole (12), spliced pole (12) run through connecting hole (11) and the terminal surface through helicitic texture connection motor main part (1).

3. The initial fine positioning apparatus of a PMSM photoelectric encoder according to claim 2, wherein: the one end that mounting panel (3) were kept away from in locating hole (16) is opened there is the shoulder hole, spliced pole (12) are T type cylinder structure, the big footpath end joint shoulder hole of spliced pole (12), the path end of spliced pole (12) passes through the terminal surface of helicitic texture connection motor main part (1).

4. The initial fine positioning apparatus of a PMSM photoelectric encoder as set forth in claim 1, wherein: open one side inner wall of axle sleeve (7) and one side outer wall of motor shaft (2) has matched with keyway (15), the flat key of joint between keyway (15), pass through helicitic texture installation locking bolt between the opposite side of axle sleeve (7) and motor shaft (2).

5. The initial fine positioning apparatus of a PMSM photoelectric encoder as set forth in claim 1, wherein: it has mounting groove (17) to open on sealed shell (5) in rotary trough (10) outside, card circuit mainboard (18) and through countersunk head bolt fastening in mounting groove (17), sensitization piece (19) fixed mounting and electric connection circuit mainboard (18), sensitization piece (19) are located light source (6) directly over, and sensitization piece (19) and light source (6) are located the both sides of grid (9) respectively.