A water-cooled round-edge grinding head spindle structure
The internal water-cooling structure and sealed drainage design solve the problem of incomplete cooling of high-speed grinding wheels, achieving effective cooling of the grinding wheels and protection of the bearing chamber. The structure is compact and easy to maintain.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG DEMAN MACHINE
- Filing Date
- 2025-06-24
- Publication Date
- 2026-05-26
AI Technical Summary
Conventional external cooling methods cannot effectively cool the grinding wheel at high speeds, and coolant may enter the bearing chamber, leading to excessively high grinding wheel temperature and structural damage.
It adopts an internal water-cooling structure, which delivers cooling water directly to the grinding wheel through the internal through hole of the spindle. Combined with the design of the sealing ring and drain port, it ensures the cooling effect and discharges the coolant in case of seal failure, thus avoiding contamination of the bearing chamber.
It effectively cools the high-speed grinding wheel, prevents the grinding wheel temperature from becoming too high, protects the bearing housing, and has a compact structure that is easy to install and maintain.
Smart Images
Figure CN224274461U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of glass edging equipment, and in particular relates to a spindle structure for an internally water-cooled round edge grinding head. Background Technology
[0002] When glass edging equipment processes glass, the high-speed friction between the grinding wheel and the glass generates a large amount of heat. Therefore, glass edging equipment usually has a coolant spraying mechanism to continuously reduce the temperature of the grinding wheel during glass processing and prevent the grinding wheel from overheating. However, in order to ensure that the grinding wheel has effective processing capabilities, the grinding wheel speed is usually very high. Conventional external cooling methods will result in a shortened contact time between the coolant and the grinding wheel due to centrifugal force, leading to the problem that the coolant cannot effectively cool the grinding wheel.
[0003] This invention designs an internally water-cooled round-edge grinding head spindle structure to solve the above problems. Utility Model Content
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] An internally water-cooled round-edge grinding head spindle structure includes a grinding head seat, a spindle, a central water-discharging grinding wheel, and inlet / outlet flanges. The spindle is installed inside the grinding head seat, and the inlet / outlet flanges are installed at the lower end of the grinding head seat. The bottom end of the spindle passes through the inlet / outlet flanges, and the central water-discharging grinding wheel is installed at the bottom end of the spindle. A water inlet is provided on one side of the inlet / outlet flanges. A first through hole is provided at the lower end of the spindle. The upper end of the first through hole extends radially along the spindle, and the left and right ends of the first through hole are connected to the water inlet. The lower end of the first through hole extends axially along the spindle. A second through hole is provided radially extending inside the central water-discharging grinding wheel, and the lower end of the first through hole is connected to the middle of the second through hole.
[0006] As a preferred option, two sealing rings are provided on the inner end of the inlet and outlet flanges, and the two sealing rings are respectively distributed on the upper and lower sides of the upper end of the first through hole.
[0007] As a preferred option, a drain outlet is provided on the side of the inlet / outlet flange closest to the grinding head seat.
[0008] As a preferred embodiment, an angular contact ball bearing, a deep groove ball bearing, a spacer, and a lock nut are installed between the grinding head base and the main shaft. The angular contact ball bearing is located at the lower end of the spacer, and the lower end of the angular contact ball bearing abuts against the upper end of the inlet and outlet flanges. The deep groove ball bearing is located at the upper end of the spacer, and the lock nut is located at the upper end of the deep groove ball bearing, and the lock nut abuts against the upper end of the deep groove ball bearing.
[0009] As a preferred embodiment, a lower end cover is installed at the lower end of the spindle. The lower end cover is located on the upper side of the central water-discharging grinding wheel, and the upper end of the lower end cover is in contact with the lower end of the inlet and outlet water flanges.
[0010] Compared with existing technologies, the advantages of this utility model are:
[0011] 1. When cooling water is supplied through the inlet, the cooling water enters the spindle through the first through hole, then flows downward into the second through hole, and finally flows out from the outside of the center water-exit grinding wheel. This achieves the purpose of cooling the center water-exit grinding wheel and solves the problem that conventional external cooling methods cannot effectively cool the grinding wheel due to centrifugal force when the grinding wheel speed is very high.
[0012] 2. When the sealing and waterproofing function of the sealing ring fails, the drain port on the inlet and outlet flanges can discharge coolant, preventing coolant from entering the bearing chamber of the spindle.
[0013] 3. This utility model has a compact structure and is easy to install and maintain because the angular contact ball bearing, deep groove ball bearing, spacer and other structures are fixed by compression. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the present invention.
[0015] Figure 2 This is a utility model Figure 1 A schematic diagram from the perspective of A.
[0016] The labels in the diagram are as follows: 1. Grinding head holder; 2. Main shaft; 3. Center water outlet grinding wheel; 4. Inlet and outlet flanges; 5. Water inlet; 6. Drain outlet; 7. First through hole; 8. Second through hole; 9. Sealing ring; 11. Angular contact ball bearing; 12. Deep groove ball bearing; 13. Spacer; 14. Locking nut; 15. Lower end cover. Detailed Implementation
[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following embodiments or drawings are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0018] A water-cooled, round-edge grinding head spindle structure, such as... Figure 1 As shown, the device includes a grinding head base 1, a main shaft 2, a central water-discharging grinding wheel 3, and inlet / outlet flanges 4. The main shaft 2 is installed inside the grinding head base 1, and the inlet / outlet flanges 4 are installed at the lower end of the grinding head base 1. The bottom end of the main shaft 2 passes through the inlet / outlet flanges 4. The central water-discharging grinding wheel 3 is installed at the bottom end of the main shaft 2. A water inlet 5 is provided on one side of the inlet / outlet flanges 4. A first through hole 7 is provided at the lower end of the main shaft 2. The upper end of the first through hole 7 extends radially along the main shaft 2, and the left and right ends of the first through hole 7 are connected to the water inlet 5. The lower end of the first through hole 7 extends axially along the main shaft 2. A second through hole 8 is provided inside the central water-discharging grinding wheel 3, and the lower end of the first through hole 7 is connected to the middle of the second through hole 8.
[0019] When the water inlet 5 supplies cooling water, the cooling water enters the spindle 2 through the first through hole 7, then flows downward into the second through hole 8, and finally flows out from the outside of the center water-exit grinding wheel 3, thus cooling the center water-exit grinding wheel 3. This solves the problem that when the grinding wheel speed is very high, conventional external cooling methods will not be able to effectively cool the grinding wheel due to centrifugal force.
[0020] Two sealing rings 9 are provided on the inner end of the inlet / outlet flange 4. The two sealing rings 9 are respectively distributed on the upper and lower sides of the upper end of the first through hole 7. A drain port 6 is provided on the side of the inlet / outlet flange 4 near the grinding head seat 1.
[0021] When the sealing and waterproofing function of the sealing ring 9 fails, the drain port 6 on the inlet and outlet flange 4 can discharge the coolant, preventing the coolant from entering the bearing chamber of the spindle 2.
[0022] An angular contact ball bearing 11, a deep groove ball bearing 12, a spacer 13, and a lock nut 14 are installed between the grinding head seat 1 and the main shaft 2. The angular contact ball bearing 11 is located at the lower end of the spacer 13, and the lower end of the angular contact ball bearing 11 abuts against the upper end of the inlet / outlet flange 4. The deep groove ball bearing 12 is located at the upper end of the spacer 13, and the lock nut 14 is located at the upper end of the deep groove ball bearing 12, and the lock nut 14 abuts against the upper end of the deep groove ball bearing 12.
[0023] Because the angular contact ball bearing 11, deep groove ball bearing 12, spacer 13 and other structures are fixed by compression, the structure is compact and convenient for installation and maintenance.
[0024] A lower end cover 15 is installed at the lower end of the main shaft 2. The lower end cover 15 is located on the upper side of the central water-discharging grinding wheel 3, and the upper end of the lower end cover 15 is in contact with the lower end of the inlet and outlet flange 4.
[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A water-cooled internal cooling structure of a round edge grinding head spindle, characterized in that: The device includes a grinding head seat (1), a main shaft (2), a central water-discharging grinding wheel (3), and an inlet / outlet flange (4). The main shaft (2) is installed inside the grinding head seat (1), and the inlet / outlet flange (4) is installed at the lower end of the grinding head seat (1). The bottom end of the main shaft (2) passes through the inlet / outlet flange (4). The central water-discharging grinding wheel (3) is installed at the bottom end of the main shaft (2). An inlet (5) is provided on one side of the inlet / outlet flange (4). A first through hole (7) is provided at the lower end of the main shaft (2). The upper end of the first through hole (7) extends radially along the main shaft (2). The left and right ends of the first through hole (7) are connected to the inlet (5). The lower end of the first through hole (7) extends axially along the main shaft (2). A second through hole (8) is provided radially inside the central water-discharging grinding wheel (3). The lower end of the first through hole (7) is connected to the middle of the second through hole (8).
2. The internal water-cooled, dished grinding head spindle structure of claim 1, wherein: The inner end of the inlet / outlet flange (4) is provided with two sealing rings (9), which are respectively distributed on the upper and lower sides of the upper end of the first through hole (7).
3. The internally water-cooled round-edge grinding head spindle structure according to claim 2, characterized in that: The inlet and outlet flange (4) is provided with a drain outlet (6) on the side near the grinding head seat (1).
4. The internally water-cooled round-edge grinding head spindle structure according to claim 1, characterized in that: An angular contact ball bearing (11), a deep groove ball bearing (12), a spacer (13), and a lock nut (14) are installed between the grinding head seat (1) and the main shaft (2). The angular contact ball bearing (11) is located at the lower end of the spacer (13), and the lower end of the angular contact ball bearing (11) abuts against the upper end of the inlet / outlet flange (4). The deep groove ball bearing (12) is located at the upper end of the spacer (13), and the lock nut (14) is located at the upper end of the deep groove ball bearing (12), and the lock nut (14) abuts against the upper end of the deep groove ball bearing (12).
5. The internally water-cooled round-edge grinding head spindle structure according to claim 4, characterized in that: The lower end of the main shaft (2) is equipped with a lower end cover (15), which is located on the upper side of the central water-discharging grinding wheel (3), and the upper end of the lower end cover (15) is in contact with the lower end of the inlet and outlet flange (4).