Novel small-diameter permanent magnet roller rotor inner wall punching tool
By using an internal wall drilling fixture to directly drill holes inside the drum, the problem of needing to plug holes and grind repeatedly for traditional external drilling is solved. This achieves consistent hole depth and shortens processing time, making it suitable for simplified processing of the inner wall of small-diameter permanent magnet drum rotors.
Patent Information
- Application Number
- CN202520159171.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Traditional methods of drilling holes in the inner wall of small-diameter permanent magnet drum rotors require multiple plugging and grinding processes, and the hole depths are inconsistent, leading to extended production time and increased processing complexity.
An internal wall drilling fixture, including a fixture ring and a positioning fixture template, is used to drill holes directly from the inner wall of the roller. The alloy sleeve and the positioning fixture template ensure consistent hole depth and simplify the processing.
It simplifies the processing flow, ensures the consistency of hole depth, reduces the professional skill requirements of workers, can adapt to the needs of different hole groups, and shortens the processing time.
Smart Images

Figure CN223762209U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rotor drilling technology, specifically a novel tooling for drilling holes in the inner wall of a small-diameter permanent magnet drum rotor. Background Technology
[0002] Traditional methods for drilling holes in the inner wall of small-diameter permanent magnet drum rotors involve drilling through the outside of the drum wall and then plugging the hole. This traditional method requires additional plugging and grinding steps after drilling, increasing workload and delaying the project. Furthermore, the plugging process makes it difficult to precisely control the depth of the bottom hole, leading to inconsistent tapping depths. Utility Model Content
[0003] The purpose of this utility model is to solve the problems mentioned in the background art. This utility model provides a new type of drilling tool for the inner wall of a small-diameter permanent magnet drum rotor, which directly drills holes from inside the drum wall, reduces the process of clogging and grinding, and makes all holes have the same depth.
[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0005] A novel tooling for drilling holes in the inner wall of a small-diameter permanent magnet drum rotor includes two tooling rings and a positioning tooling template. The two tooling rings are respectively installed on the top and bottom of the drum. The top and bottom of the positioning tooling template are respectively installed on the upper and lower tooling rings. The positioning tooling template fits against the inner wall of the drum and has vertically distributed machining holes.
[0006] Furthermore, alloy sleeves are installed at the vertically distributed machining holes.
[0007] Furthermore, the tooling ring is provided with multiple circumferentially distributed tooling ring mounting holes, and the inner ring of the tooling ring is provided with multiple circumferentially evenly distributed mounting blocks, with template mounting holes provided in the middle of the mounting blocks.
[0008] Furthermore, the positioning fixture template has a fixing part at the middle of both ends, which is locked between the two mounting blocks. The positioning fixture template has fixing blind holes on both sides, which correspond to the mounting holes of the fixture ring.
[0009] Furthermore, the inner end face of the positioning fixture template is flat, while the outer end face of the positioning fixture template facing the roller is curved.
[0010] Furthermore, the alloy sleeve is cylindrical, and a through hole is provided in the middle of the alloy sleeve.
[0011] Furthermore, the machining hole is located in the middle of the positioning tooling template.
[0012] Beneficial effects:
[0013] This invention solves the problem of needing to re-plug and grind the hole after drilling from the outside of the roller, simplifying the processing and ensuring consistent hole depth. This invention is simple to use, requires minimal worker skills, and is adaptable to drilling needs of different hole groups on workpieces of the same diameter. It also allows two people to operate the drilling function simultaneously, significantly reducing processing time. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of an embodiment of the present utility model;
[0016] Figure 2 This is a schematic diagram of a tooling ring according to an embodiment of the present invention;
[0017] Figure 3 This is a front view of a positioning tooling template according to an embodiment of the present invention;
[0018] Figure 4 This is a bottom view of a positioning tooling template according to an embodiment of the present invention;
[0019] Figure 5 This is a schematic diagram of an alloy sleeve according to an embodiment of the present invention. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0021] As shown in the figure, this utility model discloses a novel tooling for drilling holes in the inner wall of a small-diameter permanent magnet drum rotor, including two tooling rings 1 and a positioning tooling template 2. The two tooling rings 1 are respectively installed on the top and bottom of the drum 3. The top and bottom of the positioning tooling template 2 are respectively installed on the upper and lower tooling rings 1. The positioning tooling template 2 fits against the inner wall of the drum 3. Vertically distributed machining holes 21 are provided on the positioning tooling template 2.
[0022] This invention allows for drilling from the inside of the roller, reducing the need for clogging and grinding.
[0023] Furthermore, alloy sleeves 4 are installed at the 21 vertically distributed machining holes.
[0024] The tooling ring 1 is made of Q235 steel and is machined from a single piece of steel plate.
[0025] The tooling ring 1 and the roller 3 (i.e. the workpiece) are connected by bolts, which makes disassembly and assembly convenient and ensures accurate relative positioning.
[0026] The material of the positioning tooling template 2 is Q235.
[0027] In one embodiment of this utility model, the tooling ring 1 is provided with a plurality of circumferentially distributed tooling ring mounting holes 11, and the inner ring of the tooling ring 1 is provided with a plurality of circumferentially evenly distributed mounting blocks 12, with a template mounting hole 121 in the middle of the mounting block 12. The bolts connecting the tooling ring 1 and the roller 3 pass through the tooling ring mounting holes 11. The fasteners connecting the positioning tooling template 2 and the tooling ring 1 pass through the template mounting holes 121.
[0028] In one embodiment of the present invention, a fixing part 22 is provided at the middle of both ends of the positioning tooling template 2. The fixing part 22 is locked between two mounting blocks 12. Fixing blind holes 23 are provided on both sides of both ends of the positioning tooling template 2. The fixing blind holes 23 correspond to the tooling ring mounting holes 11.
[0029] In one embodiment of this utility model, the inner end face 201 of the positioning fixture template 2 is flat, and the outer end face 202 of the positioning fixture template facing the roller is curved. The high flatness of the inner end face 201 can effectively limit the drilling depth; the curved outer end face 202 fits tightly against the inner wall of the roller, ensuring that the drilling depth remains consistent.
[0030] In one embodiment of this utility model, the alloy sleeve 4 is a cylinder with a through hole 41 in the middle. The alloy sleeve 4 is inserted into the machining hole 21. The wear-resistant alloy sleeve is made of stainless steel, which can extend the service life of the tooling.
[0031] In one embodiment of this utility model, the machining hole 21 is located in the middle of the positioning tooling template 2.
[0032] This invention is simple to use, requires minimal professional skills from workers, and can adapt to the drilling needs of workpieces with the same diameter but different hole groups. It also allows two people to operate the drilling function simultaneously, significantly reducing processing time.
[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A novel small-diameter permanent-magnet roller rotor inner wall punching tooling, characterized in that, The device comprises two tool rings and a positioning tool template, the two tool rings are respectively installed on the top and bottom of the roller, the top and bottom of the positioning tool template are respectively installed on the tool rings at the upper end and the lower end, the positioning tool template is attached to the inner wall of the roller, and vertical distribution processing holes are arranged on the positioning tool template.
2. A novel small diameter permanent magnet roller rotor inner wall punching tooling according to claim 1, characterized by, An alloy sleeve is installed at the vertical distribution processing holes.
3. A novel small diameter permanent magnet roller rotor inner wall punching tooling according to claim 1, characterized by, The tool ring is provided with a plurality of circumferentially distributed tool ring mounting holes, and the inner ring of the tool ring is provided with a plurality of circumferentially uniformly distributed mounting blocks, and the middle of the mounting block is provided with a template mounting hole.
4. A novel small diameter permanent magnet roller rotor inner wall punching tooling according to claim 3, characterized in that, The middle of the two ends of the positioning tool template is provided with a fixing part, the fixing part is clamped between the two mounting blocks, and the two sides of the two ends of the positioning tool template are provided with fixing blind holes corresponding to the tool ring mounting holes.
5. A novel small diameter permanent magnet cylinder rotor inner wall punching tooling according to claim 4, characterized in that, The inner end face of the positioning tool template is a plane, and the outer end face of the positioning tool template facing the roller is a curved surface.
6. A novel small diameter permanent magnet cylinder rotor inner wall punching tooling according to claim 2, characterized in that, The alloy sleeve is a cylinder, and a through hole is arranged in the middle of the alloy sleeve.
7. A novel small diameter permanent magnet cylinder rotor inner wall punching tooling according to claim 1, characterized in that, The processing holes are located in the middle of the positioning tool template.