CN107932322B - Method and structure for preventing main shaft of large-torque grinding machine from being fogged - Google Patents
Method and structure for preventing main shaft of large-torque grinding machine from being fogged Download PDFInfo
- Publication number
- CN107932322B CN107932322B CN201711278028.1A CN201711278028A CN107932322B CN 107932322 B CN107932322 B CN 107932322B CN 201711278028 A CN201711278028 A CN 201711278028A CN 107932322 B CN107932322 B CN 107932322B
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- China
- Prior art keywords
- bearing
- front bearing
- spindle
- gland
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 210000004907 gland Anatomy 0.000 claims abstract description 54
- 125000006850 spacer group Chemical group 0.000 claims abstract description 33
- 230000001681 protective effect Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000003595 mist Substances 0.000 abstract description 12
- 239000000110 cooling liquid Substances 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
Abstract
The invention discloses a method and a structure for preventing a main shaft of a large-torque grinding machine from fog, wherein the structure comprises a grinding wheel flange plate, a main shaft, a front bearing seat, a rear bearing seat and a main shaft seat, wherein the front bearing seat and the rear bearing seat are respectively arranged at the front end and the rear end of the main shaft seat, a double-row cylindrical roller bearing and a front angular contact bearing are respectively fixedly arranged in the front bearing seat, and a pair of rear angular contact bearings are fixedly arranged in the rear bearing seat. According to the invention, the spindle bearing is arranged in the spindle seat, the water mist generated during grinding is primarily isolated, and meanwhile, the water mist generated during grinding is thoroughly prevented from entering the spindle bearing through two snake-shaped sealing waterproof mist paths formed on the contact surface of the front bearing outer ring gland and the front bearing inner ring gland and the contact surface of the spacer ring and the protective nut, so that the sealing performance of the spindle is greatly improved, the cooling liquid is effectively prevented from being immersed into the spindle bearing, the spindle bearing is damaged, the spindle bearing is invalid, and the service life of the whole spindle is prolonged.
Description
Technical Field
The invention relates to a method and a structure for preventing a main shaft of a large-torque grinding machine from being fogged, and belongs to the technical field of the main shaft of the grinding machine from being fogged.
Background
At present, most of grinding machines seal the main shaft by adopting sealing ring type waterproof treatment, the mode basically meets the processing environment with small cooling capacity, but for the grinding mode in the creep mode, the grinding torque is larger, the cooling capacity is huge, water mist is distributed on the whole end part of the main shaft during cooling, the sealing performance requirement on the main shaft is stricter, cooling liquid can be caused to infiltrate into the main shaft bearing by a little negligence, the main shaft bearing is damaged, the main shaft bearing is invalid, and finally, the main shaft is scrapped to cause huge economic loss.
Disclosure of Invention
The invention aims to provide the anti-fog method and the structure for the main shaft of the large-torque grinding machine, which have the advantages of simple structure, easiness in realization and good sealing performance, so that the sealing performance of the main shaft is greatly improved, the main shaft bearing is effectively prevented from being damaged due to the fact that cooling liquid is immersed into the main shaft bearing, the main shaft bearing is invalid, and the service life of the whole main shaft is prolonged.
The technical scheme of the invention is as follows: a method for preventing the water fog of the main axle of high-torque grinder includes such steps as making one or more annular slots or bosses on the contact surfaces of front bearing and inner ring covers and the contact surfaces of spacer ring and protecting nut, sequentially installing front bearing and inner ring covers, spacer ring and protecting nut between front bearing seat and grinding wheel flange, and embedding the annular bosses on the contact surfaces of front bearing and inner ring covers and spacer ring and protecting nut in annular slots.
In the method, the top of the annular boss is tightly attached to the bottom of the annular groove, so that the aim of sealing and matching is fulfilled.
In the method, the spacer is sleeved on the outer walls of the protective nut, the front bearing inner ring gland, the front bearing outer ring gland and the front end of the front bearing seat, and radial water mist is prevented from entering the main shaft bearing through the isolation effect of the spacer.
The invention also provides a high-torque grinding machine spindle waterproof fog structure, which comprises a grinding wheel flange, a spindle, a front bearing seat, a rear bearing seat and a spindle seat, wherein the front bearing seat and the rear bearing seat are respectively arranged at the front end and the rear end of the spindle seat, a double-row cylindrical roller bearing and a front angular contact bearing are respectively and fixedly arranged in the front bearing seat, a pair of rear angular contact bearings are fixedly arranged in the rear bearing seat, the front end of the spindle is fixedly arranged on the double-row cylindrical roller bearing and the front angular contact bearing, the rear end of the spindle is fixedly connected with the rear angular contact bearing, the end part of the front end of the spindle is fixedly connected with the grinding wheel flange, a front bearing outer ring gland, a front bearing inner ring gland, a spacer and a protective nut are sequentially arranged between the spindle and the front bearing flange, one or more annular grooves or annular bosses are respectively arranged on the contact surface of the front bearing outer ring gland and the front bearing inner ring gland and the contact surface of the spacer nut, and the annular boss on the contact surface of the spacer and the protective nut are embedded in annular boss, so that a serpentine sealing path is formed between the front bearing outer ring gland and the two sealing paths and the sealing ring respectively.
Further, a separation plate is arranged on the inner wall of the spacer ring, and the separation plate is mutually embedded and matched with an annular groove or an annular boss on the contact surface of the protective nut.
And a front bearing outer ring adjusting sleeve and a front bearing inner ring adjusting sleeve are arranged between the double-row cylindrical roller bearing and the front angular contact bearing.
And a rear bearing outer ring adjusting sleeve and a rear bearing inner ring adjusting sleeve are arranged between the rear angular contact bearings.
Further, the rear end of the rear bearing seat is sequentially provided with a bearing pressing ring and a locking nut.
By adopting the technical scheme, the invention has the advantages that: according to the invention, the spindle bearing is arranged in the spindle seat, the water mist generated during grinding is primarily isolated, and meanwhile, the water mist generated during grinding is thoroughly prevented from entering the spindle bearing through two snake-shaped sealing waterproof mist paths formed on the contact surface of the front bearing outer ring gland and the front bearing inner ring gland and the contact surface of the spacer ring and the protective nut, so that the sealing performance of the spindle is greatly improved, the cooling liquid is effectively prevented from being immersed into the spindle bearing, the spindle bearing is damaged, the spindle bearing is invalid, and the service life of the whole spindle is prolonged.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a partial enlarged view of fig. 1.
Reference numerals illustrate: 1-a grinding wheel flange plate; 2-a main shaft; 3- -a protective nut; 4-spacer rings; 5-a front bearing inner ring gland; the bearing comprises a 6-front bearing outer ring gland, a 7-circular arc chamfer, an 8-double-row cylindrical roller bearing, a 9-front bearing seat, a 10-front bearing outer ring adjusting sleeve, a 11-front bearing inner ring adjusting sleeve, a 12-front angular contact bearing, a 13-main shaft seat, a 14-rear bearing seat, a 15-rear bearing outer ring adjusting sleeve, a 16-rear bearing inner ring adjusting sleeve, a 17-rear angular contact bearing, a 18-bearing pressing ring, a 19-locking nut, a 20-annular groove, a 21-annular boss and a 22-isolation plate.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
Embodiments of the invention: the invention discloses a method for preventing a main shaft of a large-torque grinding machine from fog, and a structural schematic diagram of the main shaft of the large-torque grinding machine, as shown in fig. 1 and 2, wherein the method comprises a grinding wheel flange plate 1, a main shaft 2, a front bearing seat 9, a rear bearing seat 14 and a main shaft seat 13, the front bearing seat 9 and the rear bearing seat 14 are respectively arranged at the front end and the rear end of the main shaft seat 13, and a bearing pressing ring 18 and a locking nut 19 are sequentially arranged at the rear end of the rear bearing seat 14. The front bearing seat 9 is fixedly provided with a double-row cylindrical roller bearing 8 and a front angular contact bearing 12 respectively, the rear bearing seat 14 is internally fixedly provided with a pair of rear angular contact bearings 17, the front end of the main shaft 2 is fixed on the double-row cylindrical roller bearing 8 and the front angular contact bearing 12, the rear end of the main shaft 2 is fixed on the rear angular contact bearing 17, the end part of the front end of the main shaft 2 is fixedly connected with a grinding wheel flange plate 1, the main shaft 2 is sequentially provided with a front bearing outer ring gland 6, a front bearing inner ring gland 5, a spacer ring 4 and a protective nut 3 between the front bearing seat 9 and the grinding wheel flange plate 1, the inner wall of the spacer ring 4 is provided with a spacer plate 22, one or one annular groove 20 or an annular boss 21 is arranged on the contact surface of the front bearing outer ring gland 6 and the front bearing inner ring gland 5 and the contact surface of the spacer ring 4 and the protective gland nut 3, so that a sealing path between the two serpentine sealing paths of the two sealing collars are respectively formed on the contact surface of the front bearing outer ring gland 6 and the front bearing inner ring gland 5 and the two sealing ring gland 3. A front bearing outer ring adjusting sleeve 10 and a front bearing inner ring adjusting sleeve 11 are arranged between the double-row cylindrical roller bearing 8 and the front angular contact bearing 12, a rear bearing outer ring adjusting sleeve 15 and a rear bearing inner ring adjusting sleeve 16 are arranged between the rear angular contact bearing 17, displacement between the bearings is prevented by the inner sleeve and the outer sleeve of the bearing, and normal operation of the bearings is ensured.
The working principle of the invention is as follows: firstly, manufacturing one or more annular grooves 20 or annular bosses 21 on the contact surface of a front bearing outer ring gland 6 and a front bearing inner ring gland 5 and the contact surface of a spacer ring 4 and a protective nut 3, then sequentially installing the front bearing outer ring gland 6, the front bearing inner ring gland 5, the spacer ring 4 and the protective nut 3 between a front bearing seat 9 and a grinding wheel flange plate 1 on a main shaft 2, and sleeving the spacer ring 4 on the outer walls of the front ends of the protective nut 3, the front bearing inner ring gland 5, the front bearing outer ring gland 6 and the front bearing seat 9 through the isolation function of the spacer ring 4 to prevent radial water mist from entering the main shaft bearing; then the contact surface of the front bearing outer ring gland 6 and the front bearing inner ring gland 5 and the annular boss 21 on the contact surface of the spacer ring 4 and the protective nut 3 are embedded into the annular groove 20, and the top of the annular boss 21 is tightly attached to the bottom of the annular groove 20, so that the purpose of sealing fit is achieved, two snake-shaped sealing waterproof fog paths are respectively formed on the contact surface of the front bearing outer ring gland 6 and the front bearing inner ring gland 5 and the contact surface of the spacer ring 4 and the protective nut 3, and water fog generated during grinding is prevented from entering the main shaft bearing.
According to the invention, the spindle bearing is arranged in the spindle seat 13, the water mist generated during grinding is primarily isolated, meanwhile, the water mist generated during grinding is thoroughly prevented from entering the spindle bearing through two snakelike sealing waterproof mist routes formed on the contact surface of the front bearing outer ring gland 6 and the front bearing inner ring gland 5 and the contact surface of the spacer ring 4 and the protective nut 3, so that the sealing performance of the spindle is greatly improved, the cooling liquid is effectively prevented from being immersed into the spindle bearing, the spindle bearing is damaged, the spindle bearing is invalid, and the service life of the whole spindle is prolonged.
Claims (3)
1. A method for preventing a main shaft of a large-torque grinding machine from being fogged is characterized by comprising the following steps of: firstly, manufacturing one or one annular groove or annular boss on the contact surface of the front bearing outer ring gland and the front bearing inner ring gland and the contact surface of the spacer ring and the protective nut, sequentially installing the front bearing outer ring gland, the front bearing inner ring gland, the spacer ring and the protective nut between a front bearing seat and a grinding wheel flange on a main shaft, embedding the annular boss on the contact surface of the front bearing outer ring gland and the front bearing inner ring gland and the contact surface of the spacer ring and the protective nut into the annular groove, and forming two snake-shaped waterproof sealing fog routes on the contact surface of the front bearing outer ring gland and the front bearing inner ring gland and the contact surface of the spacer ring and the protective nut respectively, thereby avoiding water fog generated during grinding from entering the main shaft bearing; the adopted large-torque grinding machine spindle waterproof fog structure comprises a grinding wheel flange (1), a spindle (2), a front bearing seat (9), a rear bearing seat (14) and a spindle seat (13), wherein the front bearing seat (9) and the rear bearing seat (14) are respectively arranged at the front end and the rear end of the spindle seat (13), a double-row cylindrical roller bearing (8) and a front angular contact bearing (12) are respectively fixedly arranged in the front bearing seat (9), a pair of rear angular contact bearings (17) are fixedly arranged in the rear bearing seat (14), the front end of the spindle (2) is fixed on the double-row cylindrical roller bearing (8) and the front angular contact bearing (12), the rear end of the spindle (2) is fixed on the rear angular contact bearing (17), the end part of the front end of the spindle (2) is fixedly connected with the grinding wheel flange (1), a front bearing outer ring gland (6), a front bearing inner ring gland (5), a spacer ring (4) and a protective nut (3) are sequentially arranged between the front bearing seat (9) and the grinding wheel flange (1), the front bearing gland (6) and the annular gland (4) and the annular gland (20) are arranged on the annular gland (20) or the annular gland (20) on the inner ring (4), the annular boss (21) on the contact surface of the front bearing outer ring gland (6) and the front bearing inner ring gland (5) and the contact surface of the spacer ring (4) and the protective nut (3) is embedded into the annular groove (20), so that two snake-shaped sealing waterproof fog paths are respectively formed on the contact surface of the front bearing outer ring gland (6) and the front bearing inner ring gland (5) and the contact surface of the spacer ring (4) and the protective nut (3); the inner wall of the spacer ring (4) is provided with a spacer plate (22), and the spacer plate (22) is mutually embedded and matched with an annular groove (20) or an annular boss (21) on the contact surface of the protective nut (3); a front bearing outer ring adjusting sleeve (10) and a front bearing inner ring adjusting sleeve (11) are arranged between the double-row cylindrical roller bearing (8) and the front angular contact bearing (12); a rear bearing outer ring adjusting sleeve (15) and a rear bearing inner ring adjusting sleeve (16) are arranged between the rear angular contact bearings (17); the rear end of the rear bearing seat (14) is sequentially provided with a bearing pressing ring (18) and a locking nut (19).
2. The method for preventing the spindle of a high-torque grinding machine from being fogged according to claim 1, wherein: the top of the annular boss is clung to the bottom of the annular groove.
3. The method for preventing the spindle of a high-torque grinding machine from being fogged according to claim 1, wherein: the spacer is sleeved on the outer wall of the front end of the protective nut, the front bearing inner ring gland, the front bearing outer ring gland and the front bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711278028.1A CN107932322B (en) | 2017-12-06 | 2017-12-06 | Method and structure for preventing main shaft of large-torque grinding machine from being fogged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711278028.1A CN107932322B (en) | 2017-12-06 | 2017-12-06 | Method and structure for preventing main shaft of large-torque grinding machine from being fogged |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107932322A CN107932322A (en) | 2018-04-20 |
| CN107932322B true CN107932322B (en) | 2023-11-07 |
Family
ID=61945996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711278028.1A Active CN107932322B (en) | 2017-12-06 | 2017-12-06 | Method and structure for preventing main shaft of large-torque grinding machine from being fogged |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107932322B (en) |
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| Publication number | Publication date |
|---|---|
| CN107932322A (en) | 2018-04-20 |
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