CN106849564B

CN106849564B - Rotor feeding initial positioning mechanism of motor press-mounting machine

Info

Publication number: CN106849564B
Application number: CN201611269610.7A
Authority: CN
Inventors: 罗宿; 程先锋; 陈国平; 蔡林虎; 李明祝
Original assignee: Suzhou Tongjin Precision Industry Joint-Stock Co ltd
Current assignee: Suzhou Tongjin Precision Industry Joint-Stock Co ltd
Priority date: 2016-12-31
Filing date: 2016-12-31
Publication date: 2023-04-07
Anticipated expiration: 2036-12-31
Also published as: CN106849564A

Abstract

The utility model provides a positioning mechanism is just sent in rotor pay-off of motor pressure equipment machine which characterized in that: comprises a primary positioning plate (61) and a feeding mechanism (62); the primary positioning plate (61) is arranged below a lower pressure action piece (31) of the press (3), a rotor rotating shaft embedding groove (611) is formed in the butt joint edge, and a blocking convex edge (612) is respectively arranged on two side edges vertical to the butt joint edge in a downward protruding mode; the feeding mechanism (62) comprises a base body (621), a supporting plate (622) is arranged on the base body (621) in a sliding mode, two supporting parts (6221) extend out of the front end of the supporting plate (622), the first feeding driving device drives the supporting plate (622) to move, the two supporting parts (6221) extend to the lower portion of the primary positioning plate (61), and the two supporting parts (6221), the bottom surface of the primary positioning plate (61) and the two blocking convex edges (612) surround to form a space for accommodating a motor end cover on the rotor.

Description

Rotor feeding initial positioning mechanism of motor press-mounting machine

Technical Field

The invention relates to automatic assembly equipment, in particular to a rotor feeding initial positioning mechanism of a motor press-fitting machine.

Background

The motor, its rotor and stator assembly not only just put into the stator with the rotor in, still have certain assembly requirement, now mostly still stop in the pure manual assembly stage, consume artifically, and production efficiency is low.

At present, the manpower cost is high, the requirement on the assembly efficiency is higher and higher, the development of a fully-automatic assembly device for the motor rotor and the motor stator is necessarily the development direction, and because the rotating shafts extend out of the two ends of the rotor, how to quickly and accurately send the rotor to an assembly station is very important, and the working precision and the cost of the whole device are directly determined.

Disclosure of Invention

The invention aims to provide a rotor feeding initial positioning mechanism of a motor press-fitting machine, which is used for automatically and accurately conveying a rotor to a position for press-fitting of the press-fitting machine.

In order to achieve the purpose, the invention adopts the technical scheme that: a rotor feeding initial positioning mechanism of a motor press-mounting machine comprises a press, wherein the rotor feeding initial positioning mechanism of the motor press-mounting machine comprises an initial positioning plate and a feeding mechanism;

the primary positioning plate is arranged below the lower pressure action piece of the press in a way that the plate surface of the primary positioning plate is vertical to the axial direction of the lower pressure action piece of the press, the primary positioning plate is a rectangular plate, one side edge of the primary positioning plate is used as a butt joint edge with the feeding mechanism, a rotor rotating shaft embedding groove is formed in the butt joint edge, a blocking convex edge is respectively arranged on each of two side edges vertical to the butt joint edge of the primary positioning plate in a downward protruding mode, and the distance between the two blocking convex edges is equal to the width size of a motor end cover on the rotor;

the feeding mechanism comprises a base body, a bearing plate is arranged on the base body in a sliding mode along the horizontal feeding direction corresponding to the butt joint edge of the primary positioning plate, two bearing parts extend out of the front end of the bearing plate and are arranged in parallel, and the distance between the two bearing parts is smaller than the width size of a motor end cover on the rotor; the first feeding driving device is acted on the bearing plate and drives the bearing plate to move, so that the two bearing parts extend to the lower part of the initial positioning plate, and the two bearing parts, the bottom surface of the initial positioning plate and the two blocking convex edges surround to form a space for accommodating a motor end cover on the rotor; the bearing plate is also provided with a guide groove for placing a motor end cover on the rotor, and the end part of the guide groove facing the primary positioning plate is correspondingly butted with the space between the blocking convex edges of the primary positioning plate; a feeding push block is arranged in the guide groove, the feeding push block is in sliding connection with the bearing plate along the horizontal feeding direction, and a second feeding driving device is acted on the feeding push block.

In the scheme, the spring is arranged between the initial positioning plate and the lower pressure action piece of the press for connecting, so that the initial positioning plate forms a floating plate.

The invention has the advantages that:

the rotor feeding initial positioning mechanism realizes full-automatic accurate feeding, is reliable in action and low in cost.

Drawings

Fig. 1 is a schematic view of a motor for an assembly to which a motor press-fitting machine of an embodiment of the present invention is applied;

fig. 2 is a schematic perspective view of a motor press-fitting machine to which an embodiment of the present invention is applied, showing a state before rotor feeding;

fig. 3 is a schematic perspective view of a motor press-mounting machine to which an embodiment of the present invention is applied, which shows a state in which a thimble is pushed up after rotor feeding;

fig. 4 is a schematic front view of a motor press-fitting machine to which an embodiment of the present invention is applied, which shows a state in which a thimble is pushed up after rotor feeding; (ii) a

Fig. 5 is a front view schematically showing the motor press-fitting machine to which the embodiment of the present invention is applied, showing a state before the press-fitting of the rotor is finished at the end of the feeding;

FIG. 6 is a perspective view of a feeding mechanism according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a first chuck of the electric press-fitting machine to which the embodiment of the present invention is applied;

fig. 8 is a schematic full-sectional view of a first chuck of the electric motor press-fitting machine to which the embodiment of the present invention is applied;

fig. 9 is a first perspective view of a clamping block in a first chuck of a motor press-fitting machine to which an embodiment of the invention is applied;

fig. 10 is a schematic perspective view of a second clamping block in the first clamping head of the motor press-fitting machine to which the embodiment of the invention is applied;

fig. 11 is a schematic perspective view of a second chuck of the electric press-fitting machine to which the embodiment of the present invention is applied;

fig. 12 is a schematic full-section view of a second chuck of the electric press-fitting machine to which the embodiment of the present invention is applied.

In the above figures: 1. A motor; 11. a rotor; 12. a stator; 13. a gear; 14. a motor end cover; 2. a work table surface; 21. clamping a stator; 3. a press; 31. pressing down the acting piece; 4. a pressure head rotating mechanism; 41. a main shaft; 42. A rotation driving device; 5. a rotor press-fitting positioning mechanism; 51. a chuck; 511. a jacket; 5111. a frustum section; 5112. a conical active surface; 512. a clamping block; 5121. a conical mating surface; 5122. a radial active surface; 5123. an axial abutting surface; 5124. an acting bevel; 5125. a blocking surface; 5126. a spring positioning slot; 513. steel balls; 514. an anti-drop end cover; 52. a thimble mechanism; 521. a thimble; 522. a thimble driving device; 6. a rotor feeding primary positioning mechanism; 61. a primary positioning plate; 611. the rotor rotating shaft is embedded in the groove; 612. blocking the convex edge; 62. a feeding mechanism; 621. a base body; 622. a bearing plate; 6221. a bearing part; 6222. a guide groove; 624. Feeding a push block; 625. a second feeding drive device; 7. a chuck; 71. a jacket; 72. a jaw portion; 73. a spring.

Detailed Description

The invention is further described with reference to the following figures and examples:

example (b): a rotor feeding initial positioning mechanism of a motor press-mounting machine is shown in figures 1-12:

the rotor feeding initial positioning mechanism of the motor press-mounting machine comprises an initial positioning plate 61 and a feeding mechanism 62.

The primary positioning plate 61 is disposed below the lower pressure member 31 of the press 3 with its plate surface perpendicular to the axial direction thereof, the primary positioning plate 61 is a rectangular plate, one side edge thereof is used as a butt joint edge with the feeding mechanism 62, the butt joint edge is provided with a rotor rotating shaft embedding slot 611, two blocking convex edges 612 are respectively and convexly disposed downwards on two side edges perpendicular to the butt joint edge on the primary positioning plate 61, and the distance between the two blocking convex edges 612 is equal to the width dimension of the motor end cover 14 on the rotor 11.

The feeding mechanism 62 comprises a base 621, a supporting plate 622 is arranged on the base 621 in a sliding manner along the horizontal feeding direction corresponding to the butt joint edge of the positioning plate 61, two supporting parts 6221 extend from the front end of the supporting plate 622, the two supporting parts 6221 are arranged in parallel, and the distance between the two supporting parts 6221 is smaller than the width of the motor end cover 14 on the rotor 11; a first feeding driving device acts on the bearing plate 622, and the first feeding driving device drives the bearing plate 622 to move, so that the two bearing portions 6221 extend below the primary positioning plate 61, and the two bearing portions 6221, the bottom surface of the primary positioning plate 61 and the two blocking convex edges 612 surround to form a space for accommodating a motor end cover on the rotor; the supporting plate 622 is further provided with a guide groove 6222 for the motor cover 14 of the rotor 11 to rest on, and the end of the guide groove 6222 facing the primary positioning plate 61 is correspondingly butted against the space between the blocking convex edges 612 of the primary positioning plate 61. A feeding push block 624 is disposed in the guiding groove 6222, the feeding push block 624 is slidably connected to the supporting plate 622 along the horizontal feeding direction, and a second feeding driving device 625 is applied on the feeding push block 624.

The primary positioning plate 61 is provided with a spring connection with respect to the lower pressure-acting member 31 of the press 3, whereby the primary positioning plate 61 constitutes a floating plate.

The motor press-mounting machine applied to the embodiment is to assemble the rotor 11 and the stator 12 as shown in fig. 1, the upper end of the rotor 11 is fixedly connected with the motor end cover 14, the lower end of the rotor 11 is provided with the gear 13, and when the rotor 11 is assembled into the stator 12, the gear 13 is required to be meshed with the gear in the stator.

The motor press-mounting machine applying the embodiment has the following structure:

referring to fig. 2-11, the motor press-mounting machine comprises a working table 2, a press 3, a press head rotating mechanism 4, a rotor press-mounting positioning mechanism 5 and a rotor feeding initial positioning mechanism 6.

Referring to fig. 2-5, a stator clamping position 21 is provided on the working platform 2, the stator clamping position 21 is used for positioning the stator 12, so that the port of the stator 12 is vertically upward, and the press 3 is correspondingly provided above the stator clamping position 21.

Referring to fig. 2-5, a main shaft 41 is rotatably disposed on the lower pressure applying element 31 of the press 3 through a bearing, the rotation center of the main shaft 41 is coincident with the axial center of the lower pressure applying element 31 of the press 3, a rotary driving device 42 is connected to the main shaft 41 through a transmission mechanism, and the rotary driving device 42 drives the main shaft 41 to rotate, thereby forming the ram rotating mechanism 4.

Referring to fig. 2-5 and in detail to fig. 7-10, the rotor press-fitting positioning mechanism 5 includes a chuck 51 and an ejector pin mechanism 52.

Referring to fig. 7-10, the collet 51 is disposed on the lower end of the spindle 41, and the collet 51 includes an outer sleeve 511, at least three clamping blocks 512, steel balls 513, and a retaining end cap 514. A through hole is arranged on the outer sleeve 511 along the axis, the upper port of the through hole is in coaxial positioning transmission connection with the main shaft 41, the lower end of the through hole is provided with a frustum section 5111, the large end of the frustum section 5111 faces downwards, and the inner wall surface of the frustum section 5111 serves as a conical action surface 5112; the at least three clamping blocks 512 are uniformly arranged in the frustum section 5111 around the axis of the main shaft; the outer side of each clamping block 512 is provided with a conical matching surface 5121 which is in abutting sliding fit with the conical action surface 5112, the inner side of the clamping block is provided with a radial action surface 5122 which is clamped on the main shaft of the rotor 11 and an axial abutting surface 5123 which is abutted by the main shaft of the rotor 11, the conical matching surface 5121 on the outer side of each clamping block 512 is provided with an action inclined surface 5124 facing to the outer side, and the lower end of the clamping block 512 at the lower end of the action inclined surface 5124 is provided with a blocking surface 5125, so that a groove body for accommodating the steel ball 513 is formed; the inside of the groove body of each clamping block 512 is correspondingly provided with a steel ball 513, the inner side of the steel ball 513 is abutted against the action inclined surface 5124, and the outer side of the steel ball is abutted against the conical action surface 5112. An elastic element is also acted on the clamping block 512, the clamping block is forced to move downwards by the elasticity of the elastic element, and an anti-release end cover 514 is covered on the lower end of the outer sleeve 511 to prevent the clamping block 512 from falling out due to gravity. And, the main shaft 41 is provided with a conical positioning portion downward along the axial line thereof, and the conical positioning portion extends to the inner side of each clamping block 512 for abutting against and matching with the shaft end of the rotating shaft of the rotor 11. Specifically, as shown in fig. 8 to 9, the opposite wall surfaces of each clamping block 512 are provided with spring positioning grooves 5126, the springs are helical compression springs, and the helical compression springs are embedded in the spring positioning grooves 5126 of the opposite wall surfaces of the adjacent clamping blocks 512, so that the clamping blocks 512 are loosened by the elasticity of the helical compression springs. Specifically, the helical compression spring may be provided between the top of the clamping block and the outer cover 511, and each clamping block 512 may be moved downward by the elastic force of the helical compression spring to be released.

As shown in fig. 2 to 5, the thimble mechanism 52 includes a thimble 521 and a thimble driving device 522, the thimble 521 is disposed coaxially with the axial direction of the main shaft 41 with its axis, the upper end of the thimble 521 is used as a acting portion pressed against the end surface of the rotating shaft of the rotor 11, the thimble 521 is slidably connected to the table surface 2 along the axial direction of the main shaft 41, the thimble 521 is extended into the stator clamping position 21, and the thimble 521 is driven by the thimble driving device 522 to move up and down.

The press 3 is preferably a servo press.

When the motor press-mounting machine of the embodiment is applied to work, the rotor 11 is firstly placed on the rotor placing position of the feeding mechanism 62, specifically, the motor end cover 14 on the rotor 11 is hung on the two bearing parts 6221, as shown in fig. 2. Then, when the machine is started, the first feeding driving device of the feeding mechanism 62 drives the supporting plate 622 to extend to below the first positioning plate 61, the two supporting portions 6221, the bottom surface of the first positioning plate 61 and the two blocking flanges 612 surround to form a space for accommodating the motor end cap on the rotor, and then the second feeding driving device 625 drives the feeding push block 624 to push the rotor 11 to below the first positioning plate 61, which is the state shown in fig. 3 and 4. Then, the thimble 521 of the thimble mechanism 52 is driven by the thimble driving device 522 to be lifted, the thimble 521 is pressed against the end surface of the lower end of the rotating shaft of the rotor 11, the thimble 521 pushes the rotor 11 upwards, the initial positioning plate 61 compresses the spring to lift upwards, the upper end of the rotating shaft of the rotor 11 extends into the chuck and is clamped by the chuck 51, the rotor 11 is reliably and accurately positioned, and the feeding mechanism 62 is retracted integrally as shown in fig. 5. Then, the press 3 is started, the pressing action member 31 of the press 3 is pressed down, and the thimble 521 moves down along with the pressing action member, so as to press the rotor 11 down into the stator 12, when the pressure sensor in the control circuit reflects that a certain pressure value is reached, it means that the gear 13 collides with the gear in the stator 12 and cannot be meshed, at this time, the rotation driving device 42 is controlled to rotate, so that the main shaft 41 drives the rotor 11 to rotate through the chuck, once the pressure sensor reflects that the pressure value is reduced, the rotation driving device 42 is controlled to stop working, the gear 13 of the rotor 11 is smoothly meshed with the gear of the stator 12, and then the press stops pressing when the pressing action member 31 reaches the displacement, so as to complete the assembly.

In addition to the above-mentioned structure, the chuck 51 of the present embodiment may be other chucks, which may be replaced by existing pneumatic or electric chucks, or may be a specific mechanical chuck 7, as shown in fig. 11 and 12, in which the chuck 7 includes an outer sleeve 71, at least three chuck portions 72, and a spring 73. The upper end of the outer sleeve 71 is provided with an opening which is coaxially positioned and in transmission connection with the main shaft 41, the lower end of the outer sleeve 71 is provided with at least three clamping claw parts 72, the three clamping claw parts 72 are uniformly arranged at the lower end of the outer sleeve 71 around the axis of the main shaft 41, the middle part of each clamping claw part 72 is provided with a pivot 721 which is hinged on the outer sleeve 71, a spring 73 is arranged between the top end of each clamping claw part 72 and the outer sleeve, and the lower end of each clamping claw part 72 is outwards rotated by the acting force of the spring 73, namely each clamping claw part 72 is opened; the inner side of each clamping claw part 72 is provided with a pressing part 722 matched with the shaft end of the rotating shaft of the rotor 11. Furthermore, the main shaft 41 is provided with a conical positioning portion downward along the axial line thereof, and the conical positioning portion extends to the inner side of each claw portion 72 to be abutted against and matched with the shaft end of the rotating shaft of the rotor 11.

The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a positioning mechanism is just thrown in rotor pay-off of motor pressure equipment machine, motor pressure equipment machine includes press (3), its characterized in that: the rotor feeding initial positioning mechanism of the motor press-fitting machine comprises an initial positioning plate (61) and a feeding mechanism (62);

the primary positioning plate (61) is arranged below the lower pressure action piece (31) of the press (3) in an axial direction with the plate surface of the primary positioning plate being perpendicular to the lower pressure action piece, the primary positioning plate (61) is a rectangular plate, one side edge of the primary positioning plate is used as a butt joint edge with the feeding mechanism (62), a rotor rotating shaft embedding groove (611) is formed in the butt joint edge, a blocking convex edge (612) is arranged on each of two side edges, perpendicular to the butt joint edge, of the primary positioning plate (61) in a protruding mode downwards, and the distance between the two blocking convex edges (612) is equal to the width size of a motor end cover (14) on the rotor (11);

the feeding mechanism (62) comprises a base body (621), a bearing plate (622) is arranged on the base body (621) in a sliding mode along the horizontal feeding direction corresponding to the butt joint edge of the primary positioning plate (61), two bearing parts (6221) extend out of the front end of the bearing plate (622), the two bearing parts (6221) are arranged in parallel, and the distance between the two bearing parts (6221) is smaller than the width size of a motor end cover (14) on the rotor (11); a first feeding driving device acts on the bearing plate (622), the first feeding driving device drives the bearing plate (622) to move, so that the two bearing parts (6221) extend to the lower part of the initial positioning plate (61), and the two bearing parts (6221), the bottom surface of the initial positioning plate (61) and the two blocking convex edges (612) surround to form a space for accommodating a motor end cover on the rotor; the bearing plate (622) is also provided with a guide groove (6222) for placing a motor end cover (14) on the rotor (11), and the end part of the guide groove (6222) facing the primary positioning plate (61) is correspondingly butted with a space between the blocking convex edges (612) of the primary positioning plate (61); a feeding push block (624) is arranged in the guide groove (6222), the feeding push block (624) is in sliding connection relative to the bearing plate (622) along the horizontal feeding direction, and a second feeding driving device (625) is acted on the feeding push block (624); the primary positioning plate (61) is connected with a spring through a lower pressing action piece (31) of the press (3), and the primary positioning plate (61) forms a floating plate.