CN215846601U

CN215846601U - Motor has rod-type stator core processing location frock

Info

Publication number: CN215846601U
Application number: CN202121655906.9U
Authority: CN
Inventors: 胡志丹; 窦勇; 熊勇; 袁红英; 杨杰
Original assignee: Hubei Tongfa Electric Generator Co ltd
Current assignee: Hubei Tongfa Electric Generator Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-02-18
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses a motor rod type stator core processing and positioning tool, which belongs to the technical field of generator processing, and mainly structurally comprises a base, a lifting assembly, an expansion tire, an expansion tile and a linkage assembly, wherein the lifting assembly is fixedly arranged in a central hole on the base, the expansion tire and the expansion tile are sequentially coaxially sleeved outside the lifting assembly, the linkage assembly is arranged at the tops of the lifting assembly and the expansion tire, the expansion tire is linked with the lifting assembly through the action of the linkage assembly, and then the expansion tile diameter is expanded or contracted so as to be used for clamping a stator core. The stator core after the positioning rod is welded is clamped and positioned by the fixture, so that the problem that the subsequent assembly is influenced by bending deformation generated by welding the positioning rod and the stator core in the prior art can be solved, and the assembly efficiency and the product percent of pass are improved.

Description

Motor has rod-type stator core processing location frock

Technical Field

The utility model relates to the technical field of generator processing, in particular to a positioning tool structure for processing a rod-type stator core of a motor.

Background

The stator core is an important component of the magnetic circuit of the motor, and the stator core, the rotor core, the stator and the air gap between the rotors form a complete magnetic circuit of the motor. The rod type stator core is a structure that a plurality of positioning rods are welded around the stator core, and the positioning rods are assembled with the front end cover and the rear end cover, so that the structure simplifies the structure of the motor and reduces the cost of the motor compared with the traditional base type stator core structure (the iron core and the base), and the stator core is directly exposed in the air by the structure, thereby being beneficial to the heat dissipation of the motor and being a motor structure widely used at present.

At present in the manufacturing procedure who has rod-type stator core, often will use the location frock to fix a position stator core, for example, application number is CN201920649550.4 discloses a motor stator core processing location frock, the first cushion cap board of accessible will shake the power that produces and pass through and transmit for head rod and fifth connection, this impact force is eliminated to first spring and second spring to avoid causing motor stator core processingquality impaired because of vibrations, the utility model discloses a technical scheme can fix a position it in stator core processing. However, in the conventional machining process of the rod-type stator core, the spigot steps at the two ends of the positioning rod are generally machined, and then the positioning rod is welded to the stator core for subsequent assembly. And the locating lever extremely takes place bending deformation when this technology is welded at locating lever and stator core for the tang step at locating lever both ends is not to last with the pore pair of front and back end cover, and then influences the assembly of follow-up front and back end cover, has the problem that production efficiency is low, and the forced assembly then can prop to split and lead to the product to scrap. Therefore, in order to solve the above technical problem, it is necessary to weld the positioning rod to the stator core and then to process the spigot steps at the two ends of the positioning rod, and in the process of machining, the existing positioning tool obviously cannot meet the positioning requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the technical defects and provides a positioning tool for processing a rod-type stator core of a motor, so as to solve the technical problem that the subsequent assembly is influenced by the deformation generated by welding between a positioning rod of the rod-type stator core and the stator core in the prior art, thereby improving the processing precision and the assembly efficiency.

In order to achieve the technical purpose, the technical scheme of the utility model provides a motor rod type stator core processing and positioning tool, which comprises:

a base;

the lifting assembly is fixedly installed in the central hole of the base, an expanding tire and an expanding tile are sequentially coaxially sleeved outside the lifting assembly, the expanding tire is linked with the lifting assembly, and the expanding tile can expand or contract the diameter of the expanding tile under the movement of the expanding tire so as to be used for clamping the stator core;

and the linkage assembly is arranged on the top of the lifting assembly and the top of the expanding tire and is used for realizing the linkage of the lifting assembly and the expanding tire.

In the technical scheme, the base is provided with a plurality of positioning holes for positioning the positioning rod during processing, and the positioning holes are uniformly distributed on a circumference formed by taking the center hole as the circle center and taking the distance from the positioning rod to the center of the stator core as the radius.

Further, the lifting assembly comprises a centering sleeve and a screw rod, the centering sleeve is fixedly installed in the center hole, a threaded through hole is formed in the centering sleeve, the lower portion of the screw rod is movably connected in the threaded through hole in a threaded mode, the lower portion of the expanding tire is sleeved on the outer portion of the centering sleeve, and the upper portion of the expanding tire is sleeved on the outer portion of the screw rod.

Furthermore, the bottom of the base is provided with a first spigot at the circumference of the central hole, a flange boss is arranged at the end part of one side of the centering sleeve connected with the central hole, and the flange boss is matched with the first spigot for installation.

Furthermore, a plurality of threaded holes are uniformly formed in the upper surface of the base along the circumferential direction of the central hole, first through holes corresponding to the threaded holes are formed in the end face of the flange boss, and a plurality of screws are arranged in the first through holes and are in threaded connection with the corresponding threaded holes and used for fixing the centering sleeve on the base.

Furthermore, a circular boss is arranged on the outer circumference of the middle part of the screw rod, and a check ring is arranged on the circular boss; and a second through hole is radially formed in one end, far away from the base, of the screw rod.

Furthermore, the expanding tire is of an outer cone cylindrical structure, a second spigot is arranged in the inner circular through hole of the expanding tire, the screw is arranged in the inner circular through hole of the expanding tire, and the inner wall of the second spigot is in sliding connection with the outer wall of the centering sleeve.

Furthermore, the expansion tile is of an inner conical cylindrical structure matched with the expansion tire, the expansion tile is composed of at least two expansion tiles, and the inner wall of each expansion tile is in sliding connection with the outer wall of the expansion tire.

Furthermore, the linkage assembly comprises a pressing nut and a cylindrical pin, the pressing nut is in threaded connection with the top end of the screw, the circumference of the edge end of the pressing nut is fixed to the top end of the expanding tire, a third through hole formed in the pressing nut in the radial direction corresponds to a second through hole formed in the screw, and the cylindrical pin penetrates through the second through hole and the third through hole.

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

according to the positioning tool, the screw, the centering sleeve, the expanding tire and the expanding tile are coaxially arranged, the positioning tool is installed on a CNC operation platform, and the center positioning of the stator core clamped on the positioning tool can be ensured as long as the X-axis direction and the Y-axis direction of the base are aligned; when the positioning tool is used for processing and positioning the stator core, the positioning rod is welded on the stator core, the stator core with the positioning rod is clamped outside the expansion tile, the inner diameter of the expansion tile is enlarged by downwards moving the expansion tire, the stator core is fixed on the tool, and the seam allowance steps at the two ends of the positioning rod are processed by CNC equipment.

Drawings

FIG. 1 is a front view of the positioning tool of the present invention;

FIG. 2 is a top view of the positioning tool of the present invention;

FIG. 3 is a schematic view of a first process step of the positioning tool of the present invention;

fig. 4 is a schematic view of a second process step when the positioning tool is used.

Shown in the figure:

1-base, 1.1-central hole, 1.2-positioning hole, 1.3-first spigot, 1.4-threaded hole, 2-centering sleeve, 2.1-threaded through hole, 2.2-flange boss, 2.3-first through hole, 3-screw rod, 3.1-round boss, 3.2-retainer ring, 3.3-second through hole, 4-expanding tire, 4.1-second spigot, 5-expanding tile, 6-linkage component, 6.1-pressing nut, 6.2-third through hole, 6.3-cylindrical pin, 7-positioning rod and 7.1-spigot step.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1-2, the present embodiment provides a processing and positioning tool for a rod-type stator core of a motor, which is installed on a table top of a CNC numerical control machine tool, and is used for clamping and positioning the stator core when steps of rabbets at two ends of a positioning rod of the rod-type stator core are processed, the structure of the tool mainly includes a base 1, a lifting assembly (a centering sleeve 2, a screw 3), an expansion tire 4, an expansion tile 5 and a linkage assembly 6, the centering sleeve 2 is fixedly installed in a central hole 1.1 of the base 1, a threaded through hole 2.1 is formed inside the centering sleeve 2, the screw 3 is installed in the threaded through hole 2.1 of the centering sleeve 2 in a matching manner, and the screw 3 can move up and down in the threaded through hole 2.1 of the centering sleeve 2; expand child 4 and expand tile 5 coaxial cover in proper order and establish the outside of centering sleeve 2, linkage assembly 6 sets up the top of screw rod 3 and the child 4 that expands, so set up, child 4 accessible expands linkage assembly 6 realize with the linkage of screw rod 3, and then make expand tile 5 can pass through the reciprocating of the child 4 that expands realizes the expansion or the shrink of its diameter to the clamping of realization to stator core.

Further, in order to ensure that the seam allowance steps 7.1 at the two ends of the positioning rod 7 to be processed can be assembled with the front end cover and the rear end cover smoothly in the subsequent process, in this embodiment, six positioning holes 1.2 for positioning the positioning rod during processing are formed in the base 1, the six positioning holes 1.2 are uniformly distributed on a circumference formed by taking the center hole 1.1 as a circle center and taking the distance from the positioning rod to the center of the stator core as a radius, so that the accuracy of the position of the seam allowance step 7.1 to be processed at the end part of the positioning rod 7 compared with the distance from the positioning rod to the center of the stator core can be ensured, and in addition, the design requirements and the processing accuracy of the CNC machine tool can ensure that the seam allowance steps 7.1 at the two ends of the positioning rod 7 are assembled with the seam allowances on the front end cover and the rear end cover smoothly, thereby ensuring the assembly accuracy and improving the product qualification rate. Specifically, in this embodiment, the manner of fixedly connecting the centering sleeve 2 and the base 1 is as follows:

firstly, the base 1 is of a plate-shaped structure, a central hole 1.1 is formed in the middle of the base 1, a first spigot 1.3 is formed in the bottom of the base 1 and at the periphery of the central hole 1.1, and a plurality of threaded holes 1.4 are uniformly formed in the upper surface of the base 1 and along the circumferential direction of the central hole 1.1;

secondly, the centering sleeve 2 is of a cylindrical structure, a flange boss 2.2 is arranged at the end part of one side, connected with the central hole 1.1, of the centering sleeve 2, and a first through hole 2.3 corresponding to the threaded hole 1.4 is arranged on the end face of the flange boss 2.2;

the centering sleeve 2 is inserted into the center hole 1.1 from the bottom of the base 1, at this time, the flange boss 2.2 at the end of the centering sleeve 2 is clamped in the first spigot 1.3 of the base 1, and then the first through hole 2.3 on the end face of the flange boss 2.2 is aligned with the threaded hole 1.4 around the center hole 1.1 and then inserted and screwed by using a screw, so that the centering sleeve 2 can be fixedly installed on the base 1, and the installation is firm.

Specifically, after the centering sleeve 2 is fixed, the screw rod 3 is screwed into the threaded through hole 2.1 in the centering sleeve 2, and then the expanding tire 4 and the expanding tile 5 are sequentially sleeved on the outer circumference of the centering sleeve 2.

Furthermore, a circular boss 3.1 is arranged on the outer circumference of the middle part of the screw rod 3, and a retainer ring 3.2 is arranged on the circular boss 3.1; correspondingly, a second spigot 4.1 matched with the circular boss 3.1 is arranged in the inner circular through hole of the expanding tire 4, so that the part of the screw rod 3 below the circular boss 3.1 can move up and down in the centering sleeve 2, and the part above the circular boss 3.1 can move up and down in the inner circular through hole of the expanding tire 4 (the screw rod 3 is connected with the hole wall of the inner circular through hole of the expanding tire 4 in a sliding manner), and the circular boss 3.1 and the check ring 3.2 are clamped in the second spigot 4.1, so that the limiting effect on the up and down movement of the screw rod 3 is achieved, and the propelling effect is achieved for driving the expanding tire 4 to ascend when the screw rod 3 ascends.

Further, the expanding tire 4 is of an external cone cylindrical structure, the diameter of the external circle of the expanding tire is gradually reduced from the top to the bottom, the inner wall of a second seam allowance 4.1 in the expanding tire 4 is in sliding connection with the outer wall of the centering sleeve 2, and the outer wall of the expanding tire 4 is in sliding connection with the expanding tile 5.

Further, the expansion tile 5 is an inner conical cylindrical structure matched with the expansion tire 4, and the expansion tile 5 in this embodiment is composed of 3 expansion tiles, and can be flexibly arranged in practical application.

Finally, a linkage assembly 6 is fixedly arranged on the top of the screw rod 3 and the expanding tire 4. Further, the linkage assembly 6 comprises a press nut 6.1, a third through hole 6.2 is formed in the radial direction of the press nut 6.1, a second through hole 3.3 is also formed in the radial direction of one end of the screw rod 3 far away from the base 1, and the aperture of the second through hole 3.3 corresponds to that of the third through hole 6.2, so that the screw rod 3 and the expansion tire 4 can be connected together after the press nut 6.1 is in threaded connection with the top end of the screw rod 3 and a cylindrical pin 6.3 penetrates through the second through hole 3.3 and the third through hole 6.2, and linkage of the screw rod 3 and the expansion tire 4 is achieved.

The working principle of the positioning tool in the embodiment is as follows:

the screw rod 3 is driven to move upwards in the centering sleeve 2 by rotating the pressing nut 6.1, then the expanding tire 4 is driven to move upwards along with the screw rod 3 by the action of the linkage assembly 6 and the lifting action of the retainer ring 3.2, so that the expanding tire 4 is gradually separated from the expanding tile 5, the diameter of the expanding tile 5 gradually becomes smaller along with the gradual separation of the expanding tire 4, when the diameter of the expanding tile is changed to be consistent with the inner diameter of a stator core to be processed, the stator core is sleeved into the expanding tile 5, then the screw rod 3 is driven to move downwards by reversely rotating the pressing nut 6.1, so that the expanding tile 4 is driven to move downwards, the purpose of tightly expanding the stator core is achieved, and the stator core to be processed can be clamped on the positioning tool.

It should be noted that, clamping the stator core to be processed by using the positioning tool described in this embodiment is to clamp the rod-type stator core in which the positioning rod is welded behind the stator core, and the clamping is specifically divided into a first process and a second process:

firstly, as shown in fig. 3, clamping a base 1 on a workbench surface of a CNC (computerized numerical control) machine tool by using a pressing plate, and aligning the base 1; then with centering

sleeve

2 or 4 external diameters of child that expand as benchmark alignment center, later will have the pole-type stator core stub to overlap in the outside of expanding tile 5 upwards, expand tile 5 after the X axis alignment and tighten stator core on the frock of this embodiment, then through CNC digit control machine tool processing locating lever 7 stub end six tang steps 7.1.

Step two, as shown in fig. 4, after the step one, the step 7.1 of the spigot at the short end of the positioning rod 7 needs to be processed, the stator core is taken off from the fixture and turned around and then clamped onto the positioning fixture again according to the working principle of the positioning fixture in the embodiment, meanwhile, the processed 6 steps 7.1 of the spigot at the short end of the positioning rod 7 are inserted into 6 positioning holes 1.2 on the base 1, and then the expansion tile 5 is expanded to fasten the stator core on the fixture to process the step 7.1 of the spigot at the other end of the positioning rod 7, and the base pressing plate of the working table of the CNC machine is required not to be loosened in the process.

In conclusion, the rod-type stator core is processed through the procedures, and meanwhile, the positioning tool is used for clamping during processing, so that the spigot steps at two ends of the processed stator core positioning rod can be smoothly assembled with the spigots of the front end cover and the rear end cover, the assembling precision is guaranteed, and the product percent of pass is improved.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a motor has pole-type stator core processing location frock which characterized in that includes:

a base;

2. The tooling for processing and positioning the stator core with the rod for the motor according to claim 1, wherein the base is further provided with a plurality of positioning holes for positioning the positioning rod during processing, and the plurality of positioning holes are uniformly arranged on a circumference formed by taking the center hole as a circle center and taking the distance from the positioning rod to the center of the stator core as a radius.

3. The tooling for machining and positioning the stator core with the rod by the motor according to claim 1, wherein the lifting assembly comprises a centering sleeve and a screw rod, the centering sleeve is fixedly installed in a center hole of the base, a threaded through hole is formed in the centering sleeve, the lower portion of the screw rod is movably connected in the threaded through hole in a threaded manner, the lower portion of the expansion die is sleeved on the outside of the centering sleeve, and the upper portion of the expansion die is sleeved on the outside of the screw rod.

4. The tooling for machining and positioning the rod-type stator core of the motor according to claim 3, wherein a first spigot is formed at the bottom of the base and at the periphery of the central hole, a flange boss is formed at the end part of one side of the centering sleeve connected with the central hole, and the flange boss is installed in a manner of being matched with the first spigot.

5. The tooling for machining and positioning the rod-type stator core of the motor according to claim 4, wherein a plurality of threaded holes are uniformly formed in the upper surface of the base along the circumferential direction of the central hole, first through holes corresponding to the threaded holes are formed in the end surface of the flange boss, and a plurality of screws are arranged in the first through holes and are in threaded connection with the corresponding threaded holes to fix the centering sleeve on the base.

6. The tooling for machining and positioning the rod-type stator core of the motor according to claim 3, wherein a circular boss is arranged on the outer circumference of the middle part of the screw rod, and a retainer ring is arranged on the circular boss.

7. The tooling for machining and positioning the rod-type stator core of the motor according to claim 6, wherein a second through hole is radially formed at one end of the screw rod, which is far away from the base.

8. The tooling for machining and positioning the rod-type stator core of the motor according to claim 6, wherein the expansion die is of an outer conical cylindrical structure, a second spigot is arranged in an inner circular through hole of the expansion die, the screw is arranged in the inner circular through hole of the expansion die, and a circular boss and a retainer ring of the screw are clamped in the second spigot.

9. The tooling for machining and positioning the rod-type stator core of the motor according to claim 8, wherein the expansion tile is of an inner conical cylindrical structure matched with the expansion die, the expansion tile is composed of at least two expansion tiles, and the inner wall of each expansion tile is in sliding connection with the outer wall of the expansion die.

10. The tooling for machining and positioning the stator core with the rod of the motor according to claim 7, wherein the linkage assembly comprises a press nut and a cylindrical pin, the press nut is in threaded connection with the top end of the screw, the circumference of the edge end of the press nut is fixed on the top end of the expansion die, a third through hole formed in the press nut in the radial direction corresponds to a second through hole formed in the screw, and the cylindrical pin is arranged by penetrating through the second through hole and the third through hole.