CN220452489U - BS narrow series contact type sealed screw rod bearing - Google Patents
BS narrow series contact type sealed screw rod bearing Download PDFInfo
- Publication number
- CN220452489U CN220452489U CN202321265886.3U CN202321265886U CN220452489U CN 220452489 U CN220452489 U CN 220452489U CN 202321265886 U CN202321265886 U CN 202321265886U CN 220452489 U CN220452489 U CN 220452489U
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- sealing ring
- ring
- sealing
- bearing
- double
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- 238000007789 sealing Methods 0.000 claims abstract description 67
- 239000004677 Nylon Substances 0.000 claims abstract description 18
- 229920001778 nylon Polymers 0.000 claims abstract description 18
- 229920001971 elastomer Polymers 0.000 claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 abstract description 5
- 230000003628 erosive effect Effects 0.000 abstract 1
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
The utility model provides a BS narrow-series contact type sealed lead screw bearing, which comprises an outer ring, an inner ring, a large rolling body, a nylon retainer, a first sealing ring and a second sealing ring, wherein the outer ring is assembled with an inner part of a machine tool box body and bears axial load and radial load; the inner ring is matched with the main shaft of the machine tool in a mounting way and bears partial bidirectional load; the large rolling body enables the inner ring, the outer ring and the nylon retainer of the bearing to rotate simultaneously, the first sealing ring and the second sealing ring form a double-sided rubber sealing ring, the double-sided rubber sealing ring is a double-lip sealing structure formed by bonding a steel skeleton and rubber, the double-sided rubber sealing ring is in contact sealing with the inner ring, and two dustproof seals are arranged; the bearing contact angle is set to 60 degrees, the inner ring is provided with a sealing groove, and the first sealing ring and the second sealing ring are inlaid in the groove. The utility model has the advantages of reducing friction and noise, self-lubricating, greatly improving the limit revolution, preventing dust and erosion in all directions, prolonging the service life of the bearing, and the like.
Description
Technical Field
The utility model relates to the field of high-speed precision machine tool machining centers, in particular to a bearing for a precision machine tool.
Background
Narrow-series screw bearings used in domestic high-speed precision machine tools are produced and manufactured in China, are imported, have no dustproof performance, and partially show the phenomenon of insufficient bearing capacity. The use of an inlet bearing in a narrow series of lead screw bearings achieves some good results, but the expensive bearing costs per year place a heavy burden on the enterprise. The prior narrow-series screw rod bearing in the industry has low precision, no dustproof structure and a non-contact sealing structure in a small part of models, but can only prevent dust and cooling liquid and cutting liquid, the rolling body adopted by the screw rod bearing in the old structure has small diameter and low bearing capacity, the retainer is made of phenolic bakelite, the phenomenon of grinding steel balls is easily caused by chip falling, and the quality and the service life of the bearing are seriously affected; in particular, the sealing structure adopts a gasket interlayer non-contact type sealing, and impurities can still enter during working. At present, small and medium-sized products are precisely produced, and the market demand cannot be met, so that the development of BS narrow-series contact type sealed screw bearings is imperative.
Disclosure of Invention
The utility model aims to provide the BS narrow-series contact type sealed lead screw bearing which solves the problem of imported replacement of the BS narrow-series contact type sealed lead screw bearing in China, reduces cost for the high-speed precision machine tool industry, reduces friction and noise, can be self-lubricated, greatly improves limit revolution, is all-round in dust prevention and corrosion prevention, and prolongs the service life of the bearing.
The purpose of the utility model is realized in the following way: the machine tool comprises an outer ring, an inner ring, a large rolling body, a nylon retainer, a first sealing ring and a second sealing ring, wherein the outer ring is assembled with an inner part of a machine tool box body and bears axial load and radial load; the inner ring is matched with the main shaft of the machine tool in a mounting way and bears partial bidirectional load; the large rolling body enables the inner ring, the outer ring and the nylon retainer of the bearing to rotate simultaneously, the first sealing ring and the second sealing ring form a double-sided rubber sealing ring, the double-sided rubber sealing ring is a double-lip sealing structure formed by bonding a steel skeleton and rubber, the double-sided rubber sealing ring is in contact sealing with the inner ring, and two dustproof seals are arranged; the contact angle of the bearing is set to be 60 degrees, the inner ring is provided with a sealing groove, and the first sealing ring and the second sealing ring are embedded into the groove; the side surface of the nylon retainer is provided with a 37-degree inclined angle, the nylon retainer is provided with a bowl-shaped pocket, the bowl-shaped pocket Kong Jianduan is outwards provided with a 10-degree inclined angle, and a 15-degree inclined angle is formed between the two bowl-shaped pockets Kong Jianduan; one end of the first sealing ring is provided with a 15-degree sharp angle and a 30-degree slope, the other end of the first sealing ring is provided with teeth, and the slope angles of the teeth are 15 degrees, 5 degrees and 15 degrees respectively; concave angles corresponding to the teeth of the first sealing ring are arranged on two sides of the inner ring, and a 30-degree slope is arranged in the middle.
The utility model has the following technical characteristics:
1. the outer end of the steel skeleton is provided with a 7-degree slope angle.
The BS narrow-series contact type sealed screw bearing adopts a structure of a single inner ring, a single outer ring, double contact type seals, large rolling bodies and reinforced nylon retainers; the product has compact structure, small volume, bidirectional stress, low vibration, low noise, high rotation precision, low friction torque, excellent sealing performance, high-speed running performance, wide adaptability, easy installation, low price and long service life. A special heat treatment process is adopted.
The utility model has the technical characteristics that: BS narrow-series contact type sealing screw rod bearing, contact angle is 60 degrees, and axial and radial bidirectional force can be born; the rated load can be improved by selecting large rolling bodies, and the rigidity of the bearing is increased; the army steel ZGCr15 is adopted for the inner ring and the outer ring, so that the mechanical property, impact resistance and alternating load of each aspect of the bearing can be improved; the structure of the retainer is innovative and optimized compared with the closed structure of the old structure, the nylon retainer structure can enlarge the whole internal space of the bearing, provide enough volume and effective space for the contact sealing ring, and meanwhile, the bowl-shaped pocket hole of the retainer can be well locked with balls, so that the bearing can rotate more flexibly, the friction coefficient is small, and the nylon retainer can also be self-lubricated and noise-reduced; particularly, the design of the sealing structure is novel, the non-contact sealing of the original structure is eliminated, and when the machine is used, cooling liquid, impurities and cutting liquid all invade into the bearing, so that the bearing is peeled off and damaged at an early stage; the development of BS narrow-series contact type sealed screw rod bearing adopts a contact type and double-lip sealing structure, the inner ring is dug with a sealing groove, and the double-lip rubber sealing ring is embedded into the groove to well isolate dust, cooling liquid impurities and cutting liquid from the outside, thereby playing a double-insurance sealing role and prolonging the service life of the bearing. The bearing material is selected from materials with high strength, high toughness and higher hardenability, and a special heat treatment process is adopted.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of a nylon cage structure;
FIG. 3 is a cross-sectional view of the AOB of FIG. 2;
FIG. 4 is a schematic view of the structure of the first seal ring and the second seal ring;
FIG. 5 is a schematic view of the outer ring structure;
FIG. 6 is a schematic view of an inner ring structure;
fig. 7 is a schematic view of a cage structure.
Detailed Description
The utility model is further described with reference to the accompanying drawings and specific examples:
referring to fig. 1-7, the embodiment comprises an outer ring 1, an inner ring 2, a large rolling body 4, a nylon retainer 46, a first sealing ring 58 and a second sealing ring 59, wherein the outer ring 1 is assembled with an inner part of a machine tool box body and bears axial load and radial load; the inner ring 2 is matched with the main shaft of the machine tool in a mounting way and bears partial bidirectional load; the large rolling body 4 enables the inner ring, the outer ring and the nylon retainer 46 of the bearing to rotate simultaneously, the first sealing ring 58 and the second sealing ring 59 form a double-sided rubber sealing ring, a double-lip sealing structure formed by bonding a steel skeleton and rubber into a whole, the double-lip sealing structure is in contact sealing with the inner ring 2, and two dust seals are arranged; the bearing contact angle is set to be 60 degrees, the inner ring 2 is provided with a sealing groove, and the first sealing ring 58 and the second sealing ring 59 are inlaid in the groove; the side surface of the nylon retainer 46 is provided with a 37-degree inclined angle, the nylon retainer 46 is provided with a bowl-shaped pocket, the bowl-shaped pocket Kong Jianduan is outwards provided with a 10-degree inclined angle, and a 15-degree inclined angle is formed between the two bowl-shaped pockets Kong Jianduan; one end of the first sealing ring 58 is provided with a 15-degree sharp angle and a 30-degree slope, and the other end is provided with teeth, wherein the slope angles of the teeth are 15 degrees, 5 degrees and 15 degrees respectively; concave angles corresponding to the teeth of the first sealing ring are arranged on two sides of the inner ring 2, and a 30-degree slope is arranged in the middle. The outer end of the steel skeleton is provided with a 7-degree slope angle.
Claims (1)
1. The BS narrow-series contact type sealed lead screw bearing is characterized by comprising an outer ring, an inner ring, a large rolling body, a nylon retainer, a first sealing ring and a second sealing ring, wherein the outer ring is assembled with an inner part of a machine tool box body and bears axial load and radial load; the inner ring is matched with the main shaft of the machine tool in a mounting way and bears partial bidirectional load; the large rolling body enables the inner ring, the outer ring and the nylon retainer of the bearing to rotate simultaneously, the first sealing ring and the second sealing ring form a double-sided rubber sealing ring, the double-sided rubber sealing ring is a double-lip sealing structure formed by bonding a steel skeleton and rubber, the double-sided rubber sealing ring is in contact sealing with the inner ring, and two dustproof seals are arranged; the contact angle of the bearing is set to be 60 degrees, the inner ring is provided with a sealing groove, and the first sealing ring and the second sealing ring are embedded into the groove; the side surface of the nylon retainer is provided with a 37-degree inclined angle, the nylon retainer is provided with a bowl-shaped pocket, the bowl-shaped pocket Kong Jianduan is outwards provided with a 10-degree inclined angle, and a 15-degree inclined angle is formed between the two bowl-shaped pockets Kong Jianduan; one end of the first sealing ring is provided with a 15-degree sharp angle and a 30-degree slope, the other end of the first sealing ring is provided with teeth, and the slope angles of the teeth are 15 degrees, 5 degrees and 15 degrees respectively; concave angles corresponding to the teeth of the first sealing ring are arranged on two sides of the inner ring, and a 30-degree slope is arranged in the middle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321265886.3U CN220452489U (en) | 2023-05-24 | 2023-05-24 | BS narrow series contact type sealed screw rod bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321265886.3U CN220452489U (en) | 2023-05-24 | 2023-05-24 | BS narrow series contact type sealed screw rod bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220452489U true CN220452489U (en) | 2024-02-06 |
Family
ID=89730911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321265886.3U Active CN220452489U (en) | 2023-05-24 | 2023-05-24 | BS narrow series contact type sealed screw rod bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220452489U (en) |
-
2023
- 2023-05-24 CN CN202321265886.3U patent/CN220452489U/en active Active
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