阅读说明：本技术 一种电机扁线绕组复合扭转装置及扭转方法 (Composite torsion device and torsion method for motor flat wire winding ) 是由 梁朔 郭瑞松 高云 王志虎 宋启廷 于 2020-07-08 设计创作，主要内容包括：本发明涉及新能源汽车电机技术领域,具体地指一种电机扁线绕组复合扭转装置及扭转方法。还包括同轴布置的外层扭转盘和内层扭转盘；所述盖板与底板之间设置有用以驱动外层扭转盘和内层扭转盘绕轴向反向旋转的扭转驱动机构；所述外层扭转盘位于盖板上,且盖板与外层扭转盘之间设置有在外层扭转盘和内层扭转盘绕轴旋转时驱动外层扭转盘和内层扭转盘沿轴向移动的轴向驱动机构。本发明的扭转装置结构简单,操作方便,通过在扭转过程中增加轴向移动,能够精确的完整扁线端头否认设计扭转要求,扭转的精度高,具有极大的推广价值。(The invention relates to the technical field of new energy automobile motors, in particular to a composite torsion device and a composite torsion method for a motor flat wire winding. The outer layer torsion disc and the inner layer torsion disc are coaxially arranged; a torsion driving mechanism for driving the outer torsion disc and the inner torsion disc to rotate in the axial direction and in the reverse direction is arranged between the cover plate and the bottom plate; the outer layer torsion disc is positioned on the cover plate, and an axial driving mechanism which drives the outer layer torsion disc and the inner layer torsion disc to move along the axial direction when the outer layer torsion disc and the inner layer torsion disc rotate around the shaft is arranged between the cover plate and the outer layer torsion disc. The twisting device is simple in structure and convenient to operate, can accurately deny the design twisting requirement of the end of the complete flat wire by increasing axial movement in the twisting process, is high in twisting precision, and has great popularization value.)

1. The utility model provides a compound torsion device of motor flat wire winding, includes bottom plate (1) and is fixed in apron (2) on bottom plate (1), its characterized in that: the outer layer torsion disc (3) and the inner layer torsion disc (4) are coaxially arranged; a torsion driving mechanism used for driving the outer layer torsion disc (3) and the inner layer torsion disc (4) to reversely rotate around the axial direction is arranged between the cover plate (2) and the bottom plate (1); outer layer torsion dish (3) are located apron (2), and are provided with between apron (2) and outer layer torsion dish (3) and drive outer layer torsion dish (3) and inner layer torsion dish (4) along axial displacement's axial actuating mechanism when pivoting at outer layer torsion dish (3) and inner layer torsion dish (4).

2. The composite torsion device for the flat wire winding of the motor according to claim 1, wherein: the axial driving mechanism comprises a first boss (5) at the upper end of the cover plate (2) and a second boss (6) at the lower end of the inner layer torsion disc (3); the first boss (5) and the second boss (6) are of mutually matched spiral structures.

3. A composite torsion device for motor flat wire winding according to claim 1 or 2, characterized in that: the torsion driving mechanism comprises a driving gear shaft (7) and a driven gear shaft (8) which are axially arranged on the inner layer torsion disc (4), the outer layer torsion disc (3) and the cover plate (2) in a penetrating manner; the driven gear shaft (8) is a hollow shaft sleeve structure sleeved on the driving gear shaft (7); the inner layer torsion disc (4) can be in meshing transmission connection with the driving gear shaft (7) along the axial direction in a moving way; the outer layer torsion disc (3) can be in meshed transmission connection with the driven gear shaft (8) along the axial direction of the outer layer torsion disc in a moving mode; and a gear transmission mechanism for driving the driving gear shaft (7) and the driven gear shaft (8) to synchronously and reversely rotate is arranged between the cover plate (2) and the bottom plate (1).

4. A composite torsion device for motor flat wire winding according to claim 3, characterized in that: the gear transmission mechanism comprises a reverse gear shaft (9) in meshing transmission connection with the driving gear shaft (7) and a transition gear shaft (10) in meshing transmission connection with the driven gear shaft (8); the transition gear shaft (10) is meshed with the reverse gear shaft (9) for transmission connection.

5. A composite torsion device for motor flat wire winding according to claim 3, characterized in that: and a reset mechanism for driving the outer layer torsion disc (3) to reset after the torsion is finished is arranged between the outer layer torsion disc (3) and the cover plate (2).

6. The composite torsion device for the flat wire winding of the motor according to claim 5, wherein: the reset structure comprises a reset spring (11); and two ends of the return spring (11) are respectively hooked on the outer layer torsion disc (3) and the driven gear shaft (8).

7. The composite torsion device for the flat wire winding of the motor according to claim 1, wherein: the inner layer torsion plate (4) and the outer layer torsion plate (3) are of circular bowl-shaped structures which are sleeved together; the outer layer torsion disc (3) and the inner layer torsion disc (4) can generate relative displacement along the circumferential direction and are fixedly sleeved together in the axial direction.

8. The composite torsion device for the flat wire winding of the motor according to claim 7, wherein: the side wall of the inner layer torsion disc (4) is provided with a cylindrical roller (12) which protrudes outwards along the radial direction; a sliding groove (13) corresponding to the cylindrical roller (12) is formed in the side wall of the outer layer torsion disc (3); the sliding groove (13) is a through hole structure arranged along the circumferential direction of the outer layer torsion disc (3); the cylindrical rollers (12) are arranged in the sliding groove (13) in a penetrating way in a way of moving along the circumferential direction.

9. The composite torsion device for the flat wire winding of the motor according to claim 1, wherein: the upper ends of the side walls of the outer layer torsion disc (3) and the inner layer torsion disc (4) are provided with a plurality of grooves (14) which are arranged at intervals along the circumferential direction and used for clamping the ends of the flat wires.

10. A method of twisting a flat wire using the twisting device according to claim 1, characterized in that: the fixed stator core (17), will treat that the twisted flat wire end is fixed in outer torsion dish (3) and inlayer torsion dish (4), drive outer torsion dish (3) and inlayer torsion dish (4) and revolve around axial antiport, drive outer torsion dish (3) and inlayer torsion dish (4) simultaneously and move to keeping away from stator core one side along the axial, twist reverse to be the project organization until the flat wire.

Technical Field

The invention relates to the technical field of new energy automobile motors, in particular to a composite torsion device and a composite torsion method for a motor flat wire winding.

Background

The flat wire motor has higher slot filling rate, so that the power density of the motor is improved, and the reduction of copper consumption and temperature rise are facilitated, so that the application is wider and wider. However, if the flat wire is processed and manufactured to meet the motor requirements or the processing technology is not high in precision and processing difficulty, the production efficiency of the motor is reduced, and the efficiency of subsequent use of the motor is greatly reduced due to the low precision. Therefore, in the case of a flat wire motor, the performance of the motor is directly affected by the processing and manufacturing effects of the flat wire. The current flat wire processing device can realize double-layer or multi-layer torsion processing, for example, the chinese patent with the patent number "CN 201710637348.5" entitled "a flat wire motor winding torsion device" introduces a flat wire processing device, which includes a rack, a fixing mechanism, a slide rail, and a torsion disc, wherein the slide rail and the torsion disc are arranged on the rack, the fixing mechanism is arranged on the slide rail, the fixing mechanism slides along the slide rail to fix the flat wire motor, and the torsion disc realizes the torsion forming of the winding through rotation. The multi-layer flat wire can be simultaneously twisted through the twisting disc, the processing procedure is simple, and the processing efficiency is high. However, the machining precision of the device is difficult to meet the requirements of the existing flat wire motor.

Fig. 1 is a schematic structural view of a conventional flat wire winding (not twisted), and fig. 2 is a schematic structural view of a flat wire winding (twisted). As can be seen from fig. 2, the torsion of the single flat wire includes three portions, that is, a first portion of a straight line segment inserted into the stator core, a second portion of a straight line segment inserted into the outermost side weld end, and a third portion connecting the first portion and the second portion, the first portion and the second portion are both straight portions extending along the axial direction of the stator core, the third portion is a bent structure bent along the circumferential direction of the stator core, and the third portion is a transition structure in which the joint positions of the first portion and the second portion are circular arc-shaped. Such a flat wire winding cannot be processed if the processing device in the above patent is used in the processing process. First, the torsional construction described in the above-mentioned patent can only machine the first and second portions, but cannot machine the third portion; secondly, it is not possible to machine the circular arc-shaped transition part where the first part, the second part and the third part are connected. Therefore, the conventional flat wire winding processing device cannot accurately process the flat wire winding shown in fig. 1-2, and a new flat wire processing device needs to be developed.

Disclosure of Invention

The invention aims to solve the technical problem that the conventional flat wire twisting device cannot accurately manufacture a flat wire winding in the background art, and provides a composite twisting device and a twisting method for the flat wire winding of a motor.

The technical scheme of the invention is as follows: the utility model provides a compound torsion device of motor flat wire winding, includes the bottom plate and is fixed in the apron on the bottom plate, its characterized in that: the outer layer torsion disc and the inner layer torsion disc are coaxially arranged; a torsion driving mechanism for driving the outer torsion disc and the inner torsion disc to rotate in the axial direction and in the reverse direction is arranged between the cover plate and the bottom plate; the outer layer torsion disc is positioned on the cover plate, and an axial driving mechanism which drives the outer layer torsion disc and the inner layer torsion disc to move along the axial direction when the outer layer torsion disc and the inner layer torsion disc rotate around the shaft is arranged between the cover plate and the outer layer torsion disc.

The axial driving mechanism further comprises a first boss at the upper end of the cover plate and a second boss at the lower end of the inner layer torsion disc; the first boss and the second boss are of mutually matched spiral structures.

The torsion driving mechanism comprises a driving gear shaft and a driven gear shaft which are axially arranged on the inner layer torsion disc, the outer layer torsion disc and the cover plate in a penetrating manner; the driven gear shaft is a hollow shaft sleeve structure sleeved on the driving gear shaft; the inner layer torsion disc can be in meshed transmission connection with the driving gear shaft in a manner of moving along the axial direction of the inner layer torsion disc; the outer layer torsion disc can be in meshed transmission connection with the driven gear shaft in a manner of moving along the axial direction of the outer layer torsion disc; and a gear transmission mechanism for driving the driving gear shaft and the driven gear shaft to synchronously and reversely rotate is arranged between the cover plate and the bottom plate.

The gear transmission mechanism comprises a reverse gear shaft in meshed transmission connection with the driving gear shaft and a transition gear shaft in meshed transmission connection with the driven gear shaft; the transition gear shaft is meshed with the reverse gear shaft for transmission connection.

And a reset mechanism for driving the outer layer torsion disc to reset after the torsion is finished is further arranged between the outer layer torsion disc and the cover plate.

The return structure further comprises a return spring; and two ends of the reset spring are respectively hooked on the outer layer torsion disc and the driven gear shaft.

The inner layer torsion plate and the outer layer torsion plate are further of circular bowl-shaped structures which are sleeved together; the outer layer torsion disc and the inner layer torsion disc can generate relative displacement along the circumferential direction and are fixedly sleeved together in the axial direction.

A cylindrical roller which is convex outwards along the radial direction is arranged on the side wall of the inner layer torsion disc; a sliding groove corresponding to the cylindrical roller is formed in the side wall of the outer layer torsion disc; the sliding groove is a through hole structure arranged along the circumferential direction of the outer layer torsion disc; the cylindrical roller can be arranged in the sliding groove in a penetrating mode in a circumferential moving mode.

And a plurality of grooves which are arranged at intervals along the circumferential direction and are used for clamping the ends of the flat wires are arranged at the upper ends of the side walls of the outer layer torsion disc and the inner layer torsion disc.

A method of twisting a flat wire using the twisting device according to claim 1, characterized in that: the stator core is fixed, the end of the flat wire to be twisted is fixed in the outer layer twisting disc and the inner layer twisting disc, the outer layer twisting disc and the inner layer twisting disc are driven to rotate in the axial direction in the opposite direction, and the outer layer twisting disc and the inner layer twisting disc are driven to move towards one side of the stator core along the axial direction until the flat wire is twisted to form a design structure.

The invention has the advantages that: 1. according to the invention, the axial driving mechanism along the axial direction is added in the twisting device, and the axial movement of the twisting disc is increased in the process of twisting the flat wire, so that the whole flat wire is twisted to form the middle bending part meeting the design requirement, the whole twisting process is convenient and simple, the manufacturing efficiency and the manufacturing precision of the flat wire winding are greatly improved, and the large popularization value is realized;

2. the axial movement of the outer layer torsion disc in the torsion process can be realized through the mutually matched first boss and second boss, other power driving equipment is not required to be added, the axial movement power of the outer layer torsion disc completely comes from the rotary motion of the outer layer torsion disc, the whole driving structure is extremely simple, and the operation is extremely convenient;

3. the torsion driving mechanism has a simple structure and is convenient to operate, synchronous reverse rotation of the outer-layer torsion disc and the inner-layer torsion disc can be conveniently realized through the driving gear shaft and the driven gear shaft which are sleeved together, the torsion mode of the torsion driving mechanism completely meets the manufacturing requirement of a flat wire winding, and the power driving mode is extremely simple;

4. the driving gear shaft and the driven gear shaft are in a synchronous operation mode, and the power of the driving gear shaft is transmitted to the driven gear shaft through a simple gear set structure, so that the investment of power equipment is saved, the synchronous operation of an outer-layer torsion disc and an inner-layer torsion disc is ensured, and the torsion efficiency is greatly improved;

5. according to the invention, the reset mechanism is arranged between the outer layer torsion disc and the driven gear shaft, so that the outer layer torsion disc and the driven gear shaft can be restored to the initial positions after each torsion is finished, and the next use is convenient to continue;

6. the outer layer torsion disc and the inner layer torsion disc are sleeved together, the outer layer torsion disc and the inner layer torsion disc are of fixed structures in the axial direction, and can generate relative slippage in the circumferential direction, so that the reverse rotation of the outer layer torsion disc and the inner layer torsion disc is not influenced, and the synchronous movement along the axial direction can be realized;

7. the end of the side wall of the outer layer torsion disc and the end of the side wall of the inner layer torsion disc are provided with the grooves, the flat wire end is inserted into the grooves during torsion to complete fixed clamping, and the flat wire end is withdrawn after the torsion is completed.

The twisting device is simple in structure and convenient to operate, the flat wire end can be accurately twisted by adding axial movement in the twisting process so as to meet the design twisting requirement, the twisting precision is high, and the twisting device has great popularization value.

Drawings

FIG. 1: the structure schematic diagram of the flat wire winding when the flat wire winding is not twisted;

FIG. 2: the structure schematic diagram of the twisted flat wire winding;

FIG. 3: an axial view of the torsion device of the present embodiment;

FIG. 4: the twisting device of the present embodiment is schematically illustrated in structure;

FIG. 5: an exploded view of the torsion device of the present embodiment;

FIG. 6: the torsional driving structure of the present embodiment is schematically illustrated;

wherein: 1-a bottom plate; 2, covering a plate; 3-outer layer torsion disc; 4-inner layer torsion disc; 5-a first boss; 6-second boss; 7-driving gear shaft; 8-driven gear shaft; 9-reverse gear shaft; 10-a transition gear shaft; 11-a return spring; 12-a cylindrical roller; 13-a chute; 14-a groove; 15-spline housing; 16-linear slide bearing; 17-a stator core; 18-flat wire winding.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

The torsion of the flat wire winding in this embodiment is to twist the linear flat wire in fig. 1 into the bent flat wire in fig. 2, and to form the bent structure in fig. 2, a relative displacement along the axial direction must be generated during the torsion process.

As shown in fig. 3 to 5, the torsion device of the present embodiment includes a bottom plate 1 and a cover plate 2 fixed on the bottom plate 1, wherein the cover plate 2 is located on the bottom plate 1 and has a hollow space therebetween. The outer layer of torsion dish 3 and the inlayer of torsion dish 4 of more than just twisting the usefulness on apron 2, as shown in fig. 3, the inlayer is twisted dish 4 and outer layer and is twisted dish 3 for cup jointing circular bowl-shaped structure together, and the up end of outer layer of torsion dish 3 and inlayer torsion dish 4 is provided with a plurality of recesses 14 that are used for fixing a position the flat line end along circumference interval arrangement.

As shown in fig. 3-5, the outer layer torsion disc 3 and the inner layer torsion disc 4 can rotate relatively along the circumferential direction and are sleeved together relatively and fixedly in the axial direction, that is, the outer layer torsion disc and the inner layer torsion disc can rotate synchronously and reversely, and can perform synchronous linear motion along the axial direction. Be provided with on the lateral wall of inlayer torsion plate 4 along radial outside bellied cylindrical roller 12, offer the spout 13 that corresponds cylindrical roller 12 on the lateral wall of skin torsion plate 3, spout 13 is the through-hole structure of arranging along outer torsion plate 3 circumference, and cylindrical roller 12 can wear to locate in spout 13 along circumferential movement ground. As shown in fig. 3 to 5, in the present embodiment, a plurality of sets of combination structures of the cylindrical rollers 12 and the sliding grooves 13 are provided on the side walls of the outer layer torsion plate 3 and the inner layer torsion plate 4, and two adjacent sets of structures are arranged at intervals along the circumferential direction. The slide groove 13 restricts the axial movement of the cylindrical rollers 12, but does not restrict the sliding of the cylindrical rollers 12 in the circumferential direction within the slide groove 13.

The torsion device of this embodiment twists reverse the actuating mechanism including being used for driving outer layer torsion dish 3 and inlayer torsion dish 4 around axial counter rotation, as shown in fig. 4 ~ 6, the torsion actuating mechanism of this embodiment includes and wears to locate the driving gear axle 7 and the driven gear axle 8 of inlayer torsion dish 4, outer layer torsion dish 3, apron 2 along the axial, and driven gear axle 8 is the hollow shaft sleeve structure of cup jointing on driving gear axle 7. The shaft body of the driving gear shaft 7 is provided with an external spline, the internal spline in the center of the inner layer torsion disc 4 is meshed with the internal spline, and the inner layer torsion disc 4 can move along the axial direction of the driving gear shaft 7. Similarly, the spline housing 15 is installed at the center of the outer layer torsion disc 3, the spline housing 15 is sleeved on the outer side of the driven gear shaft 8 and is in meshed transmission connection with the driven gear shaft 8, the driven gear shaft 8 drives the spline housing 15 to be communicated with the outer layer torsion disc 3 to rotate around the axial direction, and the spline housing 15 and the driven gear shaft 8 can generate relative movement along the axial direction.

In order to improve the smoothness of the axial movement of the outer layer torsion disc 3, the linear sliding bearing 16 is arranged between the outer layer torsion disc 3 and the driven gear shaft 8, so that the sliding friction between the outer layer torsion disc 3 and the driven gear shaft 8 can be changed into rolling friction, the friction resistance is reduced, and the smoothness of the axial movement is improved.

The driving gear shaft 7 and the driven gear shaft 8 of this embodiment are connected for synchronous linkage, and the reverse rotation of outer layer torsion dish 3 and inlayer torsion dish 4 is gone on in step promptly, as shown in fig. 4 ~ 6, this embodiment is provided with gear drive mechanism between bottom plate 1 and apron 2, gear drive mechanism includes the reverse gear shaft 9 of being connected with driving gear shaft 7 meshing transmission, the transition gear shaft 10 of being connected with driven gear shaft 8 meshing transmission, transition gear shaft 10 is connected with reverse gear shaft 9 meshing transmission simultaneously. The driving gear shaft 7 rotates to drive the reverse gear shaft 9 to rotate reversely, the reverse gear shaft 9 drives the transition gear shaft 10 to rotate, and the transition gear shaft 10 drives the driven gear shaft 8 to rotate, so that the driving gear shaft 7 rotates in the forward direction, and the driven gear shaft 8 rotates in the reverse direction. The driving gear shaft 7 and the driven gear shaft 8 of the present embodiment have the same number of teeth and module, and the reverse gear shaft 9 and the transition gear shaft 10 have the same number of teeth and module.

In addition, in order to realize the axial movement of the present embodiment during the twisting process, an axial driving mechanism for driving the outer layer twisting disk 3 and the inner layer twisting disk 4 to rotate along the axis and move along the axial direction is arranged between the cover plate 2 and the outer layer twisting disk 3. As shown in fig. 3 to 5, the axial driving mechanism of the present embodiment includes a first boss 5 at the upper end of the cover plate 2 and a second boss 6 at the lower end of the inner layer torsion plate 3, and the first boss 5 and the second boss 6 are helical structures fitted to each other. When the outer layer torsion disc 3 rotates, the outer layer torsion disc 3 moves along the axial direction due to the cooperation of the first boss 5 and the second boss 6, and meanwhile, the inner layer torsion disc 4 is driven to move axially.

Twist reverse the completion back, need to twist reverse dish 3 and inlayer to twist reverse dish 4 to the outer layer and reset, as shown in fig. 3 ~ 5, be provided with reset spring 11 between outer twist reverse dish 3 and the apron 2, reset spring 11 both ends are respectively hooked on outer twist reverse dish 3 and apron 2, after twisting the completion, under reset spring 11's effect, outer twist reverse dish 3 resumes initial position, the recovery process includes reverse pivoting and along axial rectilinear movement.

And (3) actual twisting processing: when the winding is twisted, the stator core 17 is fixed, and the twisted end of the flat wire winding 18 is correspondingly inserted into the grooves 14 on the end faces of the inner layer twisting disk 4 and the outer layer twisting disk 3.

The inner layer torsion disc 4 meshed with the upper end of the driving gear shaft is driven to rotate clockwise by manual operation or motor driving through a key slot at the lower end of the driving gear shaft 7; the gear part of the driving gear shaft 7 drives the driven gear shaft 8 to rotate anticlockwise at the same rotating speed through the reverse gear shaft 9 and the transition gear shaft 10. The external splines on the upper end of the driven gear shaft 8 are meshed with the internal splines of the spline sleeve 15, and the spline sleeve 15 is tightly fitted in the central hole of the outer layer torsion disc 3, so that the outer layer torsion disc 3 is driven to rotate anticlockwise.

Driven gear shaft 8 passes through bearing and 2 dead eye axial positioning of apron, because outer layer twist reverse 3 lower surfaces and has arranged first boss 5 and the second boss 6 with 2 upper surface matched with of apron, and spline housing 15 and driven gear shaft 8 can follow axial relative slip. The outer layer twist disk 3 is thereby caused to rotate counterclockwise while moving up along the axis, and the spline housing 15 and the linear sliding bearing 16 are caused to move up along the axis.

The outer layer torsion disc 3 is supported on the lower surface of the inner layer torsion disc 4, and the part of the inner spline in the center of the inner layer torsion disc 4 and the outer spline at the upper end of the driving gear shaft 7 can slide along the axial direction, so that the inner layer torsion disc 4 rotates clockwise and moves upwards along the axis at the same time.

The driving gear shaft 7 rotates clockwise to drive the driven gear shaft 8 to rotate anticlockwise, so that the outer layer torsion disc 3 rotates anticlockwise and moves upwards along the axis, and the inner layer torsion disc 4 rotates clockwise and moves upwards along the axis. Thereby realizing the reverse torsion of the inner-layer flat wire and the outer-layer flat wire.

After the torsion is finished, the outer layer torsion disc 3 and the inner layer torsion disc 4 are separated from the flat wire winding 19, the driving gear shaft 7 is driven to rotate anticlockwise manually or by a motor, the outer layer torsion disc 3 rotates clockwise, and the inner layer torsion disc 4 rotates anticlockwise. The reset spring 11 pulls the hook bolt installed on the lower surface of the outer layer torsion plate 3, so that the outer layer torsion plate 3 rotates clockwise and moves downwards along the axis, and the inner layer torsion plate 4 is driven to move downwards along the axis by the cylindrical roller 12 in the sliding groove 13, so that the reset is completed.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.