A round grinding tool for impeller flash treatment
By designing a ring-shaped tooling ring with limiting grooves, buffer rings, and cooling layers, the problems of offset and vibration during impeller grinding were solved, improving machining accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EIPPROS IMPELLER (YIXING) CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-08-04
AI Technical Summary
Existing impeller grinding processes suffer from misalignment and vibration issues, which affect machining accuracy.
Design a circular tooling ring body equipped with a limiting groove and a buffer ring, combined with an odd or even number of positioning teeth, and an internal cooling layer and liquid inlet hole to stabilize impeller positioning and reduce frictional heat.
It effectively reduces impeller vibration and frictional heat during high-speed rotation, and improves machining accuracy and stability.
Smart Images
Figure CN224587660U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a workpiece for cutting and grinding, specifically for treating impeller flash. Background Technology
[0002] Currently, external cylindrical grinding fixtures for impellers are molds that ensure stable and precise positioning of the impeller during the grinding process. They prevent machining errors caused by workpiece misalignment or vibration, ensuring the dimensional accuracy and shape consistency of the impeller's outer diameter. However, commercially available cylindrical grinding fixtures, due to insufficient design or manufacturing precision, may cause impeller misalignment or vibration during grinding, affecting machining accuracy. Therefore, developing a stable and highly precise cylindrical grinding fixture is a hot topic of interest for many machining manufacturers.
[0003] An existing patent (application number: CN 201921273594.8) discloses a grinding fixture for the outer diameter of cylindrical parts, including a chuck and a clamping device. The chuck includes a disc body and at least three claw poles, which are evenly distributed on the radial surface of the disc body and are either close to or far apart from each other radially. The clamping device includes a first clamp, a second clamp, and a driving part fixed on the disc body. The first clamp and the second clamp are arranged opposite each other along the axial direction of the disc body, and the axially extending portions of the claw poles are located within the range of the first clamp and the second clamp. The driving part drives the first clamp and the second clamp to close towards each other or separate away from each other. This embodiment of the grinding fixture for the outer diameter of cylindrical parts has the advantage of being less prone to deformation during clamping. While the device can effectively clamp the workpiece, the vibration problem is difficult to alleviate. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a simple, vibration-resistant grinding fixture for impeller flash treatment.
[0005] Specifically, it is implemented as follows: a circular grinding fixture for impeller flash treatment has a main body that is a circular ring-shaped fixture ring. A limiting groove is provided on the top surface of the fixture ring near the inner ring opening. A set of claw-shaped positioning teeth is provided on the limiting groove at intervals to form a set of annular gears. A pair of assembly holes are provided on the fixture ring, and a buffer ring is provided on the inner ring wall of the fixture ring.
[0006] When using the cylindrical grinding fixture, install the mounting hole clamp on the fixture ring onto the rotating device, then place the impeller that needs to be ground on the outside into the limiting groove of the fixture, align the positioning teeth clamp inside the cylindrical grinding fixture ring, and the lower part of the impeller snaps into the inner ring wall of the fixture ring and squeezes the clamp against the buffer ring. As the fixture ring rotates at high speed, most of the cutting and grinding debris will be thrown out.
[0007] Furthermore, a base ring is provided at the bottom of the tooling ring.
[0008] Furthermore, the upper part of the tooling ring is a hollow structure with an internal cooling layer for adding coolant.
[0009] Furthermore, the number of positioning teeth on the gear set is set to either odd or even depending on the impeller size.
[0010] Furthermore, the cooling layer of the tooling ring is provided with a liquid inlet hole.
[0011] Furthermore, the tooling ring is provided with a pair of grooves, and some of the cutting and grinding debris falls into the grooves and does not remain on the surface of the upper tooling ring.
[0012] The beneficial effects of this utility model are:
[0013] 1. By setting a buffer ring on the inner ring in conjunction with the positioning gear and the limiting groove, the impeller vibration generated during the high-speed rotation of the tooling can be reduced.
[0014] 2. By filling the tooling with coolant, the phenomenon of impeller friction overheating and component deformation caused by excessive rotation speed can be reduced. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of the utility model.
[0016] Figure 2 This is the left view of the utility model.
[0017] Figure 3 Top view of the utility model
[0018] In the diagram: 1. Tooling ring, 2. Chassis ring, 3. Top surface of tooling ring, 4. Limiting groove, 5. Positioning tooth, 6. Assembly hole, 7. Cooling layer, 8. Liquid inlet hole, 9. Buffer ring, 10. Tank body Detailed Implementation Example 1
[0019] like Figure 1 , Figure 2 , Figure 3 As shown, a circular grinding fixture for impeller flash treatment has a main body of a circular fixture ring 1. The bottom of the fixture ring 1 is provided with a base ring. The top surface 3 of the fixture ring 1 is provided with a limiting groove 4 near the inner ring opening. A set of ring gears is provided on the limiting groove 4 at intervals, forming a "claw"-shaped positioning tooth 5. The number of positioning teeth 5 on the gear set is set to odd or even according to the size of the impeller. The fixture ring 1 is provided with a pair of assembly holes 6. A buffer ring 9 is provided on the inner ring wall of the fixture ring 1. The upper part of the fixture ring 1 is a hollow structure with a cooling layer 7 inside for adding coolant. The cooling layer 7 of the fixture ring 1 is provided with a liquid inlet hole 8. The fixture ring 1 is provided with a pair of grooves 10, into which the cutting and grinding debris falls.
[0020] When using the cylindrical grinding fixture, install the clamp on the mounting hole 6 on the fixture ring 1 onto the rotating device, then place the impeller that needs to be ground on the outside into the limiting groove 4 of the fixture, align the positioning teeth 5 and clamp the clamp inside the cylindrical grinding fixture ring 1. The lower part of the impeller is inserted into the inner ring wall of the fixture ring 1 and squeezes the clamp against the buffer ring 9. The fixture ring 1 rotates at high speed, and most of the cutting and grinding debris will be thrown out.
Claims
1. A circular grinding tool for impeller burr processing, the main body is a tool ring body in the shape of a circular ring, characterized in that: The tooling ring has a limiting groove on its top surface near the inner ring opening. A claw-shaped positioning tooth is provided on the limiting groove at intervals to form a set of annular gears. The tooling ring has a pair of assembly holes, and a buffer ring is provided on the inner ring wall of the tooling ring.
2. The circular grinding tool for handling the impeller flash according to claim 1, characterized in that: The tooling ring is equipped with a base ring at the bottom.
3. The circular grinding tool for handling the impeller flash according to claim 1, characterized in that: The number of positioning teeth on the gear set is set to either odd or even based on the impeller size.
4. The circular grinding tool for handling the impeller flash according to claim 1, characterized in that: The upper part of the tooling ring is hollow, and a cooling layer is installed inside.
5. The circular grinding tool for handling the impeller flash according to claim 4, characterized in that: The cooling layer of the tooling ring is provided with a liquid inlet hole.
6. The circular grinding tool for handling the impeller flash according to claim 1, characterized in that: The tooling ring has a pair of grooves.