CN111336395A - Oil supply and recovery device for rotating shaft - Google Patents
Oil supply and recovery device for rotating shaft Download PDFInfo
- Publication number
- CN111336395A CN111336395A CN202010284735.7A CN202010284735A CN111336395A CN 111336395 A CN111336395 A CN 111336395A CN 202010284735 A CN202010284735 A CN 202010284735A CN 111336395 A CN111336395 A CN 111336395A
- Authority
- CN
- China
- Prior art keywords
- oil
- rotating shaft
- copper
- seat
- copper sheet
- 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.)
- Pending
Links
- 238000011084 recovery Methods 0.000 title claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910052802 copper Inorganic materials 0.000 claims abstract description 62
- 239000010949 copper Substances 0.000 claims abstract description 62
- 241000227287 Elliottia pyroliflora Species 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 7
- 239000003921 oil Substances 0.000 abstract description 135
- 239000010687 lubricating oil Substances 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 241001275902 Parabramis pekinensis Species 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N31/00—Means for collecting, retaining, or draining-off lubricant in or on machines or apparatus
- F16N31/02—Oil catchers; Oil wipers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N31/00—Means for collecting, retaining, or draining-off lubricant in or on machines or apparatus
- F16N31/02—Oil catchers; Oil wipers
- F16N2031/025—Oil-slinger
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention relates to an oil supply and recovery device for a rotating shaft, and belongs to the field of machine tools. The oil-saving bearing is provided with a rotating shaft, a copper bush seat is sleeved on the rotating shaft, an oil cavity is formed between the shaft surface of the rotating shaft and the inner side surface of the copper bush seat, an oil injection port communicated with the oil cavity is machined in one side of the copper bush seat and is connected with an oil supply system through an oil pipe, at least one main oil way with an open end is axially arranged in the other side of the copper bush seat, the main oil way is communicated with an oil return port in the copper bush seat, a copper sheet and an end cover are sleeved at two ends of the rotating shaft respectively, an auxiliary oil way formed between the copper sheet and the end cover is connected with the main oil way through an oil discharge port, the radial outer edge of the copper sheet is sealed. The invention injects lubricating oil with certain pressure between the copper shoe seat and the rotating shaft to reach the axial end of the rotating shaft, and prevents the abrasion of part of the rotating shaft, especially the end, caused by the friction between the rotating shaft and the copper shoe seat during high-speed rotation.
Description
Technical Field
The invention relates to the field of machine tools, in particular to an oil supply and recovery device for a rotating shaft, which is used for a rotating shaft used on a machine such as a grinding machine and the like, prevents lubricating oil from flowing outwards, and can uniformly supply oil and recover used oil in the axial direction.
Background
It is known that a rotating shaft for a machine tool is used for holding a workpiece to be machined with a tool, and that the rotating shaft is worn when the rotating shaft rotates at a high speed and rubs against a shoe surrounding the rotating shaft. In order to prevent the abrasion of the rotating shaft, lubricating oil is injected between the rotating shaft and the metal shoe, but the lubricating oil cannot spread to the whole axial direction of the rotating shaft due to low oil supply pressure, and the lubricating oil cannot reach the end part of the rotating shaft, so that the end part of the rotating shaft is abraded, and therefore the rotating shaft needs to be replaced, and the cost of replacing the shaft is increased. In order to solve the problem, a method of increasing the hydraulic pressure is generally adopted, but the rubber oil seal ring arranged at the end part of the rotating shaft and used for preventing oil from leaking to the outside of the metal tile seat is damaged due to overhigh pressure, the oil flows outwards from the metal tile seat, and therefore the rotating shaft cannot rotate stably or the overflowing oil pollutes a workpiece, and the quality of the workpiece is reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an oil supply and recovery device of a rotating shaft, which can inject lubricating oil with certain pressure between a copper bush seat and the rotating shaft to fully reach the axial end part of the rotating shaft, prevent the abrasion of a part of the rotating shaft, particularly the end part, caused by the friction between the rotating shaft and the copper bush seat during high-speed rotation, and prevent the lubricating oil from overflowing.
The technical scheme adopted by the invention for solving the technical problems is as follows: an oil supply and recovery device of a rotating shaft is provided with the rotating shaft, a copper bush seat is sleeved on the rotating shaft, and an oil cavity is formed between the shaft surface of the rotating shaft and the inner side surface of the copper bush seat.
The invention can also be realized by the following measures: the inner side of the end cover is machined with a mounting groove in the circumferential direction, the copper sheet is mounted in the mounting groove, and oil grooves are machined in one part of the mounting groove along the thickness direction and the outer side of the radius direction of the end cover. And an oil slinger is sleeved on the rotating shaft between the end cover and the copper sheet. The axial processing of end cover has the screw hole, and the pressurization screw is screwed in the screw hole to compress tightly copper sheet and brasses seat tip through the pressurization ball. And an oil film groove is processed on the inner hole wall of the copper sheet along the circumferential direction. The oil return port is communicated with an oil supply system through an oil pipe.
The invention has the advantages that the lubricating oil with certain pressure is injected between the copper bush seat and the rotating shaft to fully reach the axial end part of the rotating shaft, and the abrasion of a part of the rotating shaft, particularly the end part, caused by the friction between the rotating shaft and the copper bush seat during high-speed rotation is prevented. The copper sheet that is equipped with the replacement rubber oil seal ring between copper tile seat and end cover prevents through the copper sheet that the lubricating oil from flowing out the copper tile seat outside, prevents moreover because of the damaged of oil pressure cause copper sheet, and the rotation axis smoothly rotates, can improve operating efficiency, prevents that oil discharge external pollution machined part.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the connection relationship between the end cap 30 and the copper sheet 40 in fig. 1 according to the present invention.
FIG. 3 is an enlarged view of portion A of FIG. 1 in accordance with the present invention.
FIG. 4 is an enlarged view of the portion B of FIG. 1 according to the present invention.
In the figure, 1, a rotating shaft, 2, a gap, 3, a bearing, 10, a copper bush seat, 11, an oil filling port, 12, a main oil path, 13, an oil return port, 20, an oil supply system, 21, an oil tank, 22, an oil pump, 23, an oil pipe, 30, an end cover, 31, a mounting groove, 32, an oil groove, 33, an auxiliary oil path, 34, a first auxiliary oil path, 35, an oil filling port, 36, a second auxiliary oil path, 37, an oil discharging port, 38, a threaded hole, 39, an oil cavity, 40, a copper sheet, 41, an oil film groove, 50, an oil slinger, 60, a pressurizing screw, 61, a pressurizing ball and 62 are arranged.
Detailed Description
In the figure, the invention is provided with a rotating shaft 1, a cylindrical copper bush seat 10 is sleeved on the rotating shaft 1, an oil cavity 39 is formed between the axial surface of the rotating shaft 1 and the cylindrical inner side surface of the copper bush seat 10, an oil filling port 11 communicated with the oil cavity 39 is processed at one side of the copper bush seat 10, the oil filling port 11 is connected with an oil tank 21 through an oil pipe 23 and an oil pump 22, and the oil pump 22 and the oil tank 21 form an oil supply system 20. At least one main oil way 12 with an open end is axially arranged on the other side of the copper bush seat 10, the main oil way 12 is communicated with an oil return port 13 on the copper bush seat 10, and the oil return port 13 is communicated with an oil tank 21 of an oil supply system 20 through an oil pipe. The two ends of the rotating shaft 1 are respectively sleeved with a copper sheet 40 and an end cover 30, an auxiliary oil path 33 formed between the copper sheet 40 and the end cover 30 is connected with the main oil path 12 through an oil discharge port 37, an installation groove 31 is processed in the circumferential direction of the inner side of the end cover 30, the copper sheet 40 is installed in the installation groove 31, the installation groove 31 is recessed towards the thickness direction of the end cover 30, and oil grooves 32 are processed on one part of the installation groove 31 along the thickness direction and the outer side of the radius direction of the end cover 30. The axial direction of the end cover 30 is processed with a threaded hole 38, a pressure ball 61 is arranged in the threaded hole 38, a pressure screw 60 is screwed in the threaded hole 38, and the copper sheet 40 and the end part of the copper shoe seat 10 are tightly pressed through the pressure ball 61, so that the radial outer edge of the copper sheet 40 is sealed with the end part of the copper shoe seat 10, a gap 2 is arranged between the inner hole wall of the copper sheet 40 and the rotating shaft 1, an oil film groove 41 is processed on the inner hole wall of the copper sheet 40 along the circumferential direction, an oil slinger 50 is sleeved on the rotating shaft 1 between the end cover 30 and the copper sheet 40, the part of the oil groove 32 exposed between the oil slinger 50 and the copper sheet 40 is an oil injection inlet 35, the oil groove 32 is communicated with an oil cavity 39 through the gap 2, the part extending between the end cover 30 and the copper sheet 40 to the radial direction of the rotating shaft 1 is a first auxiliary oil path 34, the part extending along the axial direction, The second auxiliary oil passage 36 constitutes the auxiliary oil passage 33.
As shown in fig. 1, the bearing bush housing 10 is used to insert the rotating shaft 1 therein, and the bearing 3 is incorporated in the bearing bush housing 10 in order to smoothly rotate the rotating shaft 1. An oil filling port 11 is formed in one side of a wall body of the copper bush seat 10, at least one open main oil path 12 is formed in the other side of the wall body in a length direction in an extending mode, it can be seen from fig. 1 that the main oil path 12 is open at two end portions of the copper bush seat 10, and an oil return port 13 communicated with the main oil path 12 is formed in the copper bush seat 10. The oil supply system 20 is composed of an oil tank 21 and an oil pump 22 for supplying oil under a constant pressure, and the oil supply system 20 injects oil under a constant pressure into the oil inlet 11 of the shoe 10 through the oil pump 22 and an oil pipe 23. The end cover 30 is sleeved on the rotating shaft 1 and is hermetically connected with the end part of the brasses seat 10 to prevent oil from flowing outwards, and an auxiliary oil passage 33 formed on the inner side surface of the end cover 30 is communicated with the main oil passage 12.
As shown in fig. 2, one side of the end cap 30 is extended in the circumferential direction to form a mounting groove 31, one side of the end cap 30 is used for mounting the copper sheet 40 in the thickness direction, and a part of the mounting groove 31 is formed with an oil groove 32 extending outward in the thickness direction and the radial direction of the end cap 30, and the oil groove 32 is a connection groove of the auxiliary oil path 33.
The copper sheet 40 is used for preventing oil from flowing out of the copper shoe seat 10, the copper sheet 40 is sleeved on the rotating shaft 1 and is arranged between the end cover 30 and the copper shoe seat 10, and the oil supplied between the rotating shaft 1 and the copper shoe seat 10 is cut off from flowing out of the copper shoe seat 10. At this time, considering the flow generated by the rotation of the rotating shaft 1, the inner circumferential surface of the copper sheet 40 is spaced apart from the rotating shaft 1 by the gap 2, and an oil film groove 41 for delaying oil discharge is formed along the circumferential direction on the inner circumferential surface of the copper sheet 40.
As shown in fig. 4, when the end cap 30 is fixed to the copper shoe 10 by the screw 62 in a state where the copper sheet 40 is inserted into the mounting groove 31 of the end cap 30, if the copper sheet 40 is not fixed at a fixed position by a distance between the copper shoe 10 and the end cap 30, the copper sheet 40 is loosened by the high-speed rotation of the rotating shaft 1, and the rotating shaft 1 is scratched, thereby damaging the rotating shaft 1. In order to solve the above problems, a screw hole 38 communicating with the mounting groove 31 is formed on the rear surface of the end cap 30, a pressing screw 60 is screwed into the screw hole 38 to press a pressing ball 61, and the pressing ball 61 presses and fixes the copper sheet 40 to the end of the copper shoe 10, so that the rotation shaft 1 is prevented from being damaged since the copper sheet cannot be loosened even if the rotation shaft 1 rotates at a high speed.
The operation of the invention is as follows:
as shown in fig. 1, oil is injected through an oil injection port 11 of the copper shoe 10 under a certain pressure, for example, about 3 to 8kgf, and the oil moves between the copper shoe 10 and the rotary shaft 1 in the axial direction of the rotary shaft 1. As shown in fig. 3, the moving oil is blocked by the copper sheet 40 from flowing out of the copper shoe 10, a part of the blocked oil is discharged through the gap 2 between the copper sheet 40 and the rotation shaft 1, and the oil film groove 41 on the inner circumference of the copper sheet 40 plays a role of delaying the discharge, so that the oil stays between the rotation shaft 1 and the copper shoe 10 for a longer time, thereby reducing the amount of the oil used. The oil discharged through the gap 2 between the rotation shaft 1 and the copper sheets 40 flows into the main oil passage 12 of the copper shoe holder 10 through the auxiliary oil passage 33 inside the end cap 30 by the centrifugal force generated by the rotation of the rotation shaft 1. The oil flowing into the main oil passage 12 of the brass plate 10 returns to the oil tank 21 through the oil return port 13, and the recovered oil is re-injected into the oil filling port 11 of the brass plate 10 for recycling. The oil supplied between the copper shoe 10 and the rotating shaft 1 can sufficiently move in the axial direction of the rotating shaft 1 under a certain pressure, and the oil covers the entire axial direction of the rotating shaft 1, thereby preventing the end of the rotating shaft 1 from being worn due to friction caused by the absence of the oil supply to a part of the rotating shaft 1, particularly the end.
The oil slinger 50 guides the oil discharged from the gap 2 between the rotary shaft 1 and the copper plate 40 to flow into the auxiliary oil passage 33, as shown in fig. 3, the oil discharged from the gap 2 between the rotary shaft 1 and the copper plate 40 is guided to the auxiliary oil passage 33 from the oil inlet 35 through the oil slinger 50, the oil can flow into the auxiliary oil passage 33 more smoothly, and the oil slinger 50 slings the oil to the first auxiliary oil passage 33 by centrifugal force.
Claims (6)
1. An oil supply and recovery device of a rotating shaft is provided with the rotating shaft, a copper bush seat is sleeved on the rotating shaft, and an oil cavity is formed between the shaft surface of the rotating shaft and the inner side surface of the copper bush seat.
2. The oil supplying and recovering device of a rotary shaft according to claim 1, wherein an installation groove is formed in an inner circumferential direction of the end cap, the copper sheet is installed in the installation groove, and oil grooves are formed in a portion of the installation groove along outer sides of a thickness direction and a radius direction of the end cap.
3. An oil supply and recovery device for a rotating shaft as claimed in claim 1, wherein an oil slinger is fitted over the rotating shaft between the end cap and the copper plate.
4. The oil supply and recovery device of claim 1, wherein the end cap has a threaded hole formed in an axial direction thereof, and a pressing screw is screwed into the threaded hole and presses the copper plate against the end of the copper shoe by means of a pressing ball.
5. The oil supplying and recovering device of claim 1, wherein the inner hole wall of the copper plate is formed with an oil film groove along a circumferential direction.
6. The oil supplying and recovering device of a rotary shaft according to claim 1, wherein the oil return port is connected to an oil supply system through an oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010284735.7A CN111336395A (en) | 2020-04-13 | 2020-04-13 | Oil supply and recovery device for rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010284735.7A CN111336395A (en) | 2020-04-13 | 2020-04-13 | Oil supply and recovery device for rotating shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111336395A true CN111336395A (en) | 2020-06-26 |
Family
ID=71182796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010284735.7A Pending CN111336395A (en) | 2020-04-13 | 2020-04-13 | Oil supply and recovery device for rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111336395A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6362638A (en) * | 1986-09-01 | 1988-03-18 | Makino Milling Mach Co Ltd | Lubricating device for vertical spindle of machine tool |
| JPH09150336A (en) * | 1995-11-24 | 1997-06-10 | Toyoda Mach Works Ltd | Spindle device |
| CN102319907A (en) * | 2011-08-22 | 2012-01-18 | 郑州大学 | High-speed floating ring bearing-rotor system with independent oil supplies for inner films and outer films |
| CN102788086A (en) * | 2012-03-27 | 2012-11-21 | 秦嗣伟 | Oil static pressure main shaft main shaft for shaft oil supply |
| CN107002756A (en) * | 2014-10-29 | 2017-08-01 | 日本精工株式会社 | Shaft device and machine tool chief axis axle |
| CN110405231A (en) * | 2019-08-08 | 2019-11-05 | 章杰 | Precise hydraulic lathe spindle |
| CN212338874U (en) * | 2020-04-13 | 2021-01-12 | 威海柳韩机械有限公司 | Oil leakage prevention and recovery device for rotating shaft |
-
2020
- 2020-04-13 CN CN202010284735.7A patent/CN111336395A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6362638A (en) * | 1986-09-01 | 1988-03-18 | Makino Milling Mach Co Ltd | Lubricating device for vertical spindle of machine tool |
| JPH09150336A (en) * | 1995-11-24 | 1997-06-10 | Toyoda Mach Works Ltd | Spindle device |
| US5833522A (en) * | 1995-11-24 | 1998-11-10 | Toyoda Koki Kabushiki Kaisha | Machining spindle apparatus having a hydrostatic bearing for machine tools |
| CN102319907A (en) * | 2011-08-22 | 2012-01-18 | 郑州大学 | High-speed floating ring bearing-rotor system with independent oil supplies for inner films and outer films |
| CN102788086A (en) * | 2012-03-27 | 2012-11-21 | 秦嗣伟 | Oil static pressure main shaft main shaft for shaft oil supply |
| CN107002756A (en) * | 2014-10-29 | 2017-08-01 | 日本精工株式会社 | Shaft device and machine tool chief axis axle |
| CN110405231A (en) * | 2019-08-08 | 2019-11-05 | 章杰 | Precise hydraulic lathe spindle |
| CN212338874U (en) * | 2020-04-13 | 2021-01-12 | 威海柳韩机械有限公司 | Oil leakage prevention and recovery device for rotating shaft |
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