CN109605119B - Lathe headstock main shaft band pulley seal structure - Google Patents
Lathe headstock main shaft band pulley seal structure Download PDFInfo
- Publication number
- CN109605119B CN109605119B CN201910063337.XA CN201910063337A CN109605119B CN 109605119 B CN109605119 B CN 109605119B CN 201910063337 A CN201910063337 A CN 201910063337A CN 109605119 B CN109605119 B CN 109605119B
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- Prior art keywords
- bearing
- oil
- lubricating oil
- communicated
- main shaft
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- 239000003921 oil Substances 0.000 claims abstract description 73
- 239000010687 lubricating oil Substances 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000005461 lubrication Methods 0.000 claims description 21
- 125000006850 spacer group Chemical group 0.000 claims description 21
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
- B23Q11/123—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction for lubricating spindle bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses a sealing structure of a main shaft belt wheel of a main shaft box of a lathe, wherein a rotating sleeve is connected with a main shaft key and is used for driving the main shaft to rotate. An end cap is fixedly attached to the first end of the spindle and defines an axial position of the rotating sleeve. The first side of the belt wheel is fixedly connected with the rotating sleeve and used for driving the rotating sleeve to rotate. The second end face of the fixed sleeve is fixedly connected to the external gearbox body, the fixed sleeve is provided with an oil inlet and a first lubricating oil circuit, the first end of the first lubricating oil circuit is communicated with the oil inlet, and the second end of the first lubricating oil circuit is communicated with the first end face of the fixed sleeve. The labyrinth flange is fixedly connected to the second side of the belt pulley and matched with the fixed sleeve to form labyrinth seal and form a second lubricating oil path. The first sealing ring, the second sealing ring and the sealing piece are arranged to prevent lubricating oil from leaking, and the first oil return port and the second oil return port are arranged to improve oil return speed, keep the whole oil way unblocked and prevent lubricating oil from leaking from other contact surface parts due to overhigh pressure of the oil way.
Description
Technical Field
The invention belongs to the technical field of machinery, and particularly relates to a sealing structure of a spindle pulley of a lathe spindle box.
Background
The invention relates to the mechanical manufacturing industry and discloses an improvement of a sealing structure of a spindle pulley of a lathe spindle box. In the machine manufacturing industry, the spindle box of most lathes is driven by a belt, and the spindle and the belt pulley are connected into a gearbox body structure. The main shaft box structure has the characteristics of overload protection, uniform load and vibration reduction, and adopts thin oil lubrication. However, the long-term use finds that the oil leakage phenomenon occurs at the connection part of the belt wheel and the main shaft, which not only seriously pollutes the environment, but also wastes a large amount of oil.
Referring to fig. 1, the whole structure part of the existing main shaft box structure is more, but the sealing parts are fewer, the contact parts of the belt wheel and the rotating shaft are not provided with sealing measures, the contact parts of the lower labyrinth flange and the belt wheel are not provided with sealing measures, no sealing element is used for isolating and sealing, the parts are in rigid contact, lubricating oil leaks outwards from the gap of the contact surfaces of the parts, and the oil seeps from the contact parts. The oil return port of the whole structure is only one, the oil outlet is less, the oil return speed of the lubricating oil is low, the whole oil way is not smooth, and the lubricating oil is forced to leak from other contact surface parts.
Disclosure of Invention
The invention aims to solve the technical problem of providing a sealing structure for a spindle belt wheel of a lathe spindle box so as to solve the problem of lubricating oil leakage.
In order to solve the problems, the technical scheme of the invention is as follows:
the invention relates to a sealing structure of a main shaft belt wheel of a main shaft box of a lathe, which comprises the following components:
a main shaft;
the rotating sleeve is connected with the main shaft key and is used for driving the main shaft to rotate;
the end cover is fixedly connected to the first end of the main shaft and limits the axial position of the rotating sleeve;
the first side of the belt pulley is fixedly connected with the rotating sleeve and is used for driving the rotating sleeve to rotate;
the second end face of the fixed sleeve is fixedly connected to the external gearbox body, the fixed sleeve is matched with the rotating sleeve to form a lubrication cavity, an oil inlet and a first lubrication oil way are formed in the fixed sleeve, the first end of the first lubrication oil way is communicated with the oil inlet, and the second end of the first lubrication oil way is communicated with the lubrication cavity;
the labyrinth flange is fixedly connected to the second side of the belt wheel and matched with the fixed sleeve to form labyrinth seal and form a second lubricating oil path, and the first end of the second lubricating oil path is communicated with the lubricating cavity;
the first spacer bush;
the outer ring of the first bearing is connected with the belt wheel, the first end of the outer ring of the first bearing is connected with the rotating sleeve, the inner ring of the first bearing is connected with the fixed sleeve, and the second end of the inner ring of the first bearing is connected with the first spacer;
the outer ring of the second bearing is connected with the belt wheel, the second end of the outer ring of the second bearing is connected with the labyrinth flange, the inner ring of the second bearing is connected with the fixed sleeve, and the first end of the inner ring of the second bearing is connected with the first spacer;
a first sealing ring is arranged at the first end of the outer ring of the first bearing and used for preventing lubricating oil from leaking;
a second sealing ring is arranged at the second end of the outer ring of the second bearing and used for preventing the lubricating oil from leaking;
the oil outlet of the second lubricating oil way is provided with a sealing element for preventing the lubricating oil from leaking;
the fixed sleeve and the external gearbox body are provided with a first oil return port and a second oil return port, a first end of the first oil return port is communicated with the second lubricating oil way, and a second end of the first oil return port is communicated with an inner cavity of the external gearbox body; the first end of the second oil return port is communicated with the second lubricating oil path, and the second end of the second oil return port is communicated with the inner cavity of the external gearbox body.
According to the sealing structure of the spindle pulley of the lathe spindle box, the labyrinth seals are two labyrinth seals, the first end of the first oil return port is communicated with the labyrinth seal at the first trough of the second lubricating oil path, and the first end of the second oil return port is communicated with the labyrinth seal at the second trough of the second lubricating oil path.
The invention relates to a sealing structure of a main shaft belt wheel of a main shaft box of a lathe, which also comprises a second spacer bush; the first end of the second spacer is connected with the second end of the outer ring of the first bearing, and the second end of the second spacer is connected with the first end of the outer ring of the second bearing.
According to the sealing structure of the spindle belt wheel of the lathe spindle box, the spindle is connected with the rotating sleeve through the flat key.
According to the sealing structure of the spindle belt wheel of the lathe spindle box, the belt wheel is connected with the rotating sleeve through bolts.
By adopting the technical scheme, the invention has the following advantages and positive effects compared with the prior art:
according to the embodiment of the invention, the first sealing ring is arranged at the first end of the outer ring of the first bearing, the second sealing ring is arranged at the second end of the outer ring of the second bearing, and the sealing piece is arranged at the oil outlet of the second lubricating oil path to prevent lubricating oil from leaking.
Drawings
FIG. 1 is a schematic diagram of a prior art embodiment of a spindle box spindle pulley seal structure for a lathe in accordance with the present invention;
fig. 2 is a schematic diagram of a sealing structure of a spindle pulley of a spindle box of a lathe according to the present invention.
Reference numerals illustrate: 1: a main shaft; 2: a rotating sleeve; 3: a belt wheel; 4: an end cap; 5: a first bearing; 6: a second bearing; 7: a labyrinth flange; 8: a fixed sleeve; 9: an outer gearbox housing; 10: an oil inlet; 11: the first spacer bush; 12: the second spacer bush; 13: a first seal ring; 14: a second seal ring; 15: a seal; 16 first oil return ports; 17: and the second oil return port.
Detailed Description
The invention provides a sealing structure for a spindle pulley of a lathe spindle box, which is further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description.
Referring to fig. 2, in one embodiment, a lathe headstock spindle pulley seal structure includes: the main shaft 1, the rotating sleeve 2, the end cover 4, the belt pulley 3, the fixed sleeve 8, the labyrinth flange 7, the first spacer bush 11, the first bearing 5 and the second bearing 6. The rotating sleeve 2 is connected with the main shaft 1 by a key and is used for driving the main shaft 1 to rotate. An end cap 4 is fixedly attached to the first end of the spindle 1 and defines the axial position of the rotating sleeve 2. The first side of the belt wheel 3 is fixedly connected with the rotating sleeve 2 and is used for driving the rotating sleeve 2 to rotate. The second end face of the fixed sleeve 8 is fixedly connected to the external gearbox body 9, the fixed sleeve 8 and the rotating sleeve 2 are matched to form a lubrication cavity, an oil inlet 10 and a first lubrication oil way are formed in the fixed sleeve 8, the first end of the first lubrication oil way is communicated with the oil inlet 10, and the second end of the first lubrication oil way is communicated with the lubrication cavity. The labyrinth flange 7 is fixedly connected to the second side of the belt wheel 3 and is matched with the fixed sleeve 8 to form labyrinth seal and form a second lubrication oil path, and the first end of the second lubrication oil path is communicated with the lubrication cavity. The outer ring of the first bearing 5 is connected with the belt wheel 3, the first end of the outer ring of the first bearing 5 is connected with the rotating sleeve 2, the inner ring of the first bearing 5 is connected with the fixed sleeve 8, and the second end of the inner ring of the first bearing 5 is connected with the first spacer 11. The outer ring of the second bearing 6 is connected with the pulley 3 and the second end of the outer ring of the second bearing 6 is connected with the labyrinth flange 7, the inner ring of the second bearing 6 is connected with the fixed sleeve 8 and the first end of the inner ring of the second bearing 6 is connected with the first spacer 11. The first end of the outer ring of the first bearing 5 is provided with a first sealing ring 13 for preventing leakage of lubricating oil. The second end of the outer ring of the second bearing 6 is provided with a second sealing ring 14 for preventing leakage of lubricating oil. The oil outlet of the second lubrication circuit is provided with a seal 15 for preventing leakage of the lubricating oil. The fixed sleeve 8 and the external gearbox body 9 are provided with a first oil return port 16 and a second oil return port 17, a first end of the first oil return port 16 is communicated with a second lubricating oil path, and a second end of the first oil return port 16 is communicated with an inner cavity of the external gearbox body 9. The first end of the second oil return port 17 is communicated with a second lubrication oil path, and the second end of the second oil return port 17 is communicated with the inner cavity of the external gearbox body 9. When the lathe operates, lubricating oil is filled into a first lubricating oil path through an oil inlet 10 by an external oiling component, after flowing out of the first end of the fixed sleeve 8, the lubricating oil flows through the first bearing 5 and lubricates the first bearing 5, flows to the second bearing 6 and lubricates the second bearing 6, flows to a second lubricating oil path formed by the labyrinth flange 7 and the fixed sleeve 8, and finally flows back to the inner cavity of the gearbox body through a first oil return port 16 and a second oil return port 17 on the second lubricating oil path. The first sealing ring 13 is arranged at the first end of the outer ring of the first bearing 5, the second sealing ring 14 is arranged at the second end of the outer ring of the second bearing 6, and the sealing piece 15 is arranged at the oil outlet of the second lubricating oil path to prevent lubricating oil from leaking, and the first oil return port 16 and the second oil return port 17 which are communicated with the second lubricating oil path are arranged on the fixed sleeve 8 and the external gearbox body 9, so that the oil return speed is improved, the whole oil path is kept smooth, and lubricating oil is prevented from leaking from other contact surface parts due to overhigh pressure of the oil path.
Further, the labyrinth seal is two labyrinth seals, a first end of the first oil return port 16 is communicated with a first trough of the labyrinth seal in the second lubricating oil path, and a first end of the second oil return port 17 is communicated with a second trough of the labyrinth seal in the second lubricating oil path. The common labyrinth seal is increased into two labyrinth seals, so that the sealing performance is improved. The labyrinth flange 7 is a disc member with a plurality of grooves, the grooves and the convex parts of the fixed sleeve 8 are matched to form labyrinth seal, and the number of the grooves is determined according to specific conditions.
Preferably, a second spacer 12 is also included. The first end of the second spacer 12 is connected to the second end of the outer race of the first bearing 5, and the second end of the second spacer 12 is connected to the first end of the outer race of the second bearing 6. By arranging the second spacer 12, the stress of the first bearing 5 and the second bearing 6 is more balanced, and the service lives of the first bearing 5 and the second bearing 6 are prolonged.
Further, the main shaft 1 is connected with the rotating sleeve 2 through a flat key.
Further, the pulley 3 is bolted to the rotating sleeve 2.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is within the scope of the appended claims and their equivalents to fall within the scope of the invention.
Claims (5)
1. The utility model provides a lathe headstock main shaft band pulley seal structure which characterized in that includes:
a main shaft;
the rotating sleeve is connected with the main shaft key and is used for driving the main shaft to rotate;
the end cover is fixedly connected to the first end of the main shaft and limits the axial position of the rotating sleeve;
the first side of the belt pulley is fixedly connected with the rotating sleeve and is used for driving the rotating sleeve to rotate;
the second end face of the fixed sleeve is fixedly connected to the external gearbox body, the fixed sleeve is matched with the rotating sleeve to form a lubrication cavity, an oil inlet and a first lubrication oil way are formed in the fixed sleeve, the first end of the first lubrication oil way is communicated with the oil inlet, and the second end of the first lubrication oil way is communicated with the lubrication cavity;
the labyrinth flange is fixedly connected to the second side of the belt wheel and matched with the fixed sleeve to form labyrinth seal and form a second lubricating oil path, and the first end of the second lubricating oil path is communicated with the lubricating cavity;
the first spacer bush;
the first bearing is arranged in the lubricating cavity, the outer ring of the first bearing is connected with the belt wheel, the first end of the outer ring of the first bearing is connected with the rotating sleeve, the inner ring of the first bearing is connected with the fixed sleeve, and the second end of the inner ring of the first bearing is connected with the first spacer sleeve;
the second bearing is arranged in the lubricating cavity, the outer ring of the second bearing is connected with the belt wheel, the second end of the outer ring of the second bearing is connected with the labyrinth flange, the inner ring of the second bearing is connected with the fixed sleeve, and the first end of the inner ring of the second bearing is connected with the first spacer sleeve;
a first sealing ring is arranged at the first end of the outer ring of the first bearing and used for preventing lubricating oil from leaking;
a second sealing ring is arranged at the second end of the outer ring of the second bearing and used for preventing the lubricating oil from leaking;
the oil outlet of the second lubricating oil way is provided with a sealing element for preventing the lubricating oil from leaking;
the fixed sleeve and the external gearbox body are provided with a first oil return port and a second oil return port, a first end of the first oil return port is communicated with the second lubricating oil way, and a second end of the first oil return port is communicated with an inner cavity of the external gearbox body; the first end of the second oil return port is communicated with the second lubricating oil path, and the second end of the second oil return port is communicated with the inner cavity of the external gearbox body.
2. The spindle box spindle pulley sealing structure of a lathe according to claim 1, wherein the labyrinth seal is two labyrinth seals, a first end of the first oil return port is communicated with a first trough of the labyrinth seal in the second lubricating oil path, and a first end of the second oil return port is communicated with a second trough of the labyrinth seal in the second lubricating oil path.
3. The spindle box spindle pulley seal of a lathe of claim 1, further comprising a second spacer; the first end of the second spacer is connected with the second end of the outer ring of the first bearing, and the second end of the second spacer is connected with the first end of the outer ring of the second bearing.
4. The spindle box spindle pulley sealing structure of a lathe according to claim 1, wherein the spindle is connected with the rotating sleeve by a flat key.
5. The spindle box spindle pulley seal of claim 1 wherein said pulley is bolted to said rotating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063337.XA CN109605119B (en) | 2019-01-23 | 2019-01-23 | Lathe headstock main shaft band pulley seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063337.XA CN109605119B (en) | 2019-01-23 | 2019-01-23 | Lathe headstock main shaft band pulley seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109605119A CN109605119A (en) | 2019-04-12 |
| CN109605119B true CN109605119B (en) | 2024-02-09 |
Family
ID=66018269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910063337.XA Active CN109605119B (en) | 2019-01-23 | 2019-01-23 | Lathe headstock main shaft band pulley seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109605119B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002295493A (en) * | 2001-03-29 | 2002-10-09 | Mitsuboshi Belting Ltd | Bearing sealing structure |
| JP2006010035A (en) * | 2004-06-29 | 2006-01-12 | Tsukishima Kikai Co Ltd | Bearing structure for rotating vertical shaft and centrifugal separator |
| CN204942297U (en) * | 2015-09-18 | 2016-01-06 | 山东永华机械有限公司 | Machine bearing seal arrangement |
| CN106402336A (en) * | 2016-11-17 | 2017-02-15 | 天津市丰和博科技发展有限公司 | Improved gearbox main shaft structure of machine tool |
| CN107598192A (en) * | 2017-09-29 | 2018-01-19 | 重庆市普创长顺机械有限公司 | Main spindle box of numerical control system |
| CN107620800A (en) * | 2016-07-13 | 2018-01-23 | 成都中源红科技有限公司 | Lathe gearbox main shaft sealing construction |
| CN208169964U (en) * | 2018-04-04 | 2018-11-30 | 洛阳大华智能科技有限公司 | A kind of crusher automatic oiling lubrication device |
| CN209349960U (en) * | 2019-01-23 | 2019-09-06 | 苏州工业职业技术学院 | A kind of Lathe Spindle Box primary shaft belt pulley sealing structure |
-
2019
- 2019-01-23 CN CN201910063337.XA patent/CN109605119B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002295493A (en) * | 2001-03-29 | 2002-10-09 | Mitsuboshi Belting Ltd | Bearing sealing structure |
| JP2006010035A (en) * | 2004-06-29 | 2006-01-12 | Tsukishima Kikai Co Ltd | Bearing structure for rotating vertical shaft and centrifugal separator |
| CN204942297U (en) * | 2015-09-18 | 2016-01-06 | 山东永华机械有限公司 | Machine bearing seal arrangement |
| CN107620800A (en) * | 2016-07-13 | 2018-01-23 | 成都中源红科技有限公司 | Lathe gearbox main shaft sealing construction |
| CN106402336A (en) * | 2016-11-17 | 2017-02-15 | 天津市丰和博科技发展有限公司 | Improved gearbox main shaft structure of machine tool |
| CN107598192A (en) * | 2017-09-29 | 2018-01-19 | 重庆市普创长顺机械有限公司 | Main spindle box of numerical control system |
| CN208169964U (en) * | 2018-04-04 | 2018-11-30 | 洛阳大华智能科技有限公司 | A kind of crusher automatic oiling lubrication device |
| CN209349960U (en) * | 2019-01-23 | 2019-09-06 | 苏州工业职业技术学院 | A kind of Lathe Spindle Box primary shaft belt pulley sealing structure |
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| CN109605119A (en) | 2019-04-12 |
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