CN113798524B - Main shaft unit protection mechanism - Google Patents
Main shaft unit protection mechanism Download PDFInfo
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- CN113798524B CN113798524B CN202111058057.3A CN202111058057A CN113798524B CN 113798524 B CN113798524 B CN 113798524B CN 202111058057 A CN202111058057 A CN 202111058057A CN 113798524 B CN113798524 B CN 113798524B
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- sleeve
- main shaft
- oil drainage
- sealing
- oil
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- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention discloses a main shaft unit protection mechanism, which comprises a main shaft box body, a main shaft, a driving motor, a grating ruler, a first bearing group, a second bearing group, a first oil drainage component, a second oil drainage component, a first sealing part and a second sealing part, wherein the driving motor is sleeved in the middle of the main shaft, the main shaft box body is sleeved on the driving motor, the bottom end of the main shaft is fixedly connected with the grating ruler, the main shaft is positioned above the driving motor and is provided with the first bearing group, the main shaft is positioned between the first bearing group and the driving motor and is sleeved with the first oil drainage component, the upper end of the first bearing group is provided with the first sealing part, the main shaft is positioned below the driving motor and is provided with the second bearing group, the main shaft is positioned between the second bearing group and the grating ruler and is sleeved with the second oil drainage component, the periphery of the grating ruler is provided with the second sealing part, and the air blowing, sealing and oil throwing oil drainage structures are adopted to protect the main shaft, the motor, the grating ruler and other precision parts, prevent the grease, cutting chips, coolant, etc. from polluting the inner parts of the spindle unit.
Description
Technical Field
The invention belongs to the technical field of mechanical equipment, and particularly relates to a main shaft unit protection mechanism.
Background
In a machine tool apparatus, a spindle unit is an essential component, and the spindle unit includes a spindle, a bearing, a motor, and the like, and the spindle is driven by the motor to rotate. In the working process, the bearing runs at a high speed, the bearing is lubricated by grease, and the grease in the bearing can permeate into other parts in the main shaft unit through the mounting gaps among the parts to cause pollution. In addition, when a workpiece is machined, cutting chips or dust of the workpiece can also enter the spindle unit, especially enter a grating ruler in the spindle unit to pollute the spindle unit, and further use is affected.
Disclosure of Invention
The invention aims to overcome the protection problem of a spindle unit and a feedback component in the prior art, and provides a spindle unit protection mechanism.
The invention is realized by the following technical scheme:
a main shaft unit protection mechanism comprises a main shaft box body, a main shaft, a driving motor, a grating ruler, a first bearing group, a second bearing group, a first oil drainage component, a second oil drainage component, a first sealing component and a second sealing component, wherein the driving motor is sleeved in the middle of the main shaft;
the first oil drainage assembly comprises a first oil thrower and a first oil drainage sleeve, the first oil thrower is sleeved on the main shaft and can rotate along with the main shaft, the first oil drainage sleeve is positioned at the lower end of the first bearing group, the first oil drainage sleeve is fixed on the inner wall of the main shaft box body and positioned outside the first oil thrower, a groove is arranged at the bottom of the first oil drainage sleeve, a first oil drainage hole is formed in the groove, and an oil drainage channel is arranged on the main shaft box body at a position corresponding to the first oil drainage hole;
the first sealing component comprises a first air pipe and a first sealing sleeve, the first sealing sleeve is sleeved on the main shaft and is positioned at the top end of the first bearing group, the first sealing sleeve is provided with an air passage, and the first air pipe is arranged on the air passage;
the second oil drainage assembly comprises a second oil thrower disc and a second oil drainage sleeve, the second oil thrower disc is sleeved on the main shaft, can rotate along with the main shaft and is positioned at the lower end of the second bearing group, the second oil drainage sleeve is fixed at the bottom end of the main shaft box body and comprises an oil drainage groove, the oil drainage groove is positioned below the second oil thrower disc, and a second oil drainage hole is formed in the oil drainage groove;
the second sealing component comprises a second air pipe and a second sealing sleeve, the second sealing sleeve is fixed at the bottom end of the second oil drainage sleeve and covers the grating ruler to form a sealing cavity, an air hole is formed in the side wall of the second sealing sleeve, and the second air pipe is installed on the air hole.
In the above scheme, first bearing group overcoat is equipped with first sleeve, and the first sleeve outside passes through bolt fixed mounting main shaft box, first draining cover passes through the bolt fastening in first sleeve bottom, and first seal cover passes through bolt fixed mounting on first sleeve top.
In the scheme, a first bearing group sealing ring and a second bearing group sealing ring are sleeved on the main shaft, the first bearing group sealing ring is arranged at the upper end of the first bearing group, the second bearing group sealing ring is arranged at the lower end of the first bearing group, grooves are formed in the outer edges of the first bearing group sealing ring and the second bearing group sealing ring, the first sleeve is sleeved on the outer edges of the first bearing group sealing ring and the second bearing group sealing ring, the first bearing group sealing ring is in clearance fit with the first sealing sleeve, and the second bearing group sealing ring is in clearance fit with the first sleeve.
In the above scheme, the second sleeve is sleeved outside the second bearing group and fixed at the bottom end of the main shaft box through the bolt.
In the scheme, a third bearing group sealing ring is sleeved on the main shaft and arranged at the upper end of the second bearing group, grooves are formed in the outer edges of the second oil thrower and the third bearing group sealing ring, the second sleeve is sleeved on the outer edges of the third bearing group sealing ring and the second oil thrower, and the second oil thrower and the third bearing sealing ring are in clearance fit with the second sleeve.
In the scheme, the mounting sleeve is fixed at the bottom end of the main shaft through the bolt and can synchronously rotate along with the main shaft, and the grating ruler is fixedly mounted on the mounting sleeve.
In the above scheme, the bottom of the mounting sleeve is fixedly connected with a lower end cover, the upper edge of the second seal sleeve is sleeved at the bottom of the second oil drainage sleeve, the lower edge of the second seal sleeve is sleeved at the outer edge of the lower end cover, a seal cavity is formed in the middle of the second seal sleeve, and the grating ruler is located in the seal cavity.
In the above scheme, the main shaft top fixed mounting has the location mounting disc, set up the through-hole in the middle of the location mounting disc, first seal cover top sets up the draw-in groove, and the air flue gas outlet sets up in the draw-in groove, and the joint of location mounting disc lower edge is in the draw-in groove, and the dirt proof boot is installed to the location mounting disc outer fringe, and the dirt proof boot lower edge is less than first trachea place height.
In the above scheme, the main shaft is of a hollow structure, the middle of the main shaft is a cavity, the action rod penetrates through the cavity, a through hole is formed in the center of the lower end cover, the upper end of the action rod is located in the through hole of the positioning mounting disc, the lower end of the action rod is located in the through hole of the lower end cover, and an oil cylinder used for driving the action rod to move up and down is installed at the bottom of the lower end cover through a bolt.
In the scheme, N first oil drainage holes are formed in the first oil drainage sleeve, N is larger than or equal to 2, the centers of the first oil drainage holes are symmetrically arranged at the bottom end of the side wall of the first oil drainage sleeve, N oil drainage channels are arranged at the same positions on the side wall of the main shaft box, M second oil drainage holes are formed in the second oil drainage sleeve, M is larger than or equal to 2, and the centers of the second oil drainage holes are symmetrically arranged at the bottom end of the side wall of the second oil drainage sleeve; the number of the first air pipes is X, X is larger than or equal to 2, the first sealing sleeve is provided with X air passages, the air passages are arranged in a central symmetry mode, the number of the second air pipes in the second sealing part is Y, Y is larger than or equal to 2, the side wall of the second sealing sleeve is provided with Y air holes, and the air holes are arranged on the side wall of the second sealing sleeve in a central symmetry mode.
The invention has the advantages and beneficial effects that:
1. the spindle unit protection mechanism adopts a structure of generating air chamber pressure difference by blowing air, sealing and oil throwing and draining to protect precision components such as a spindle, a motor, a grating ruler and the like, and prevents lubricating grease, cutting chips, coolant and the like from polluting the components in the spindle unit.
2. The spindle unit protection mechanism of the invention has no additional equipment, and can achieve the protection effect by adding mechanical parts through the structural characteristics of the spindle, and the production cost of the parts is lower.
Drawings
Fig. 1 is a sectional view of a spindle unit protecting mechanism of the present invention.
Fig. 2 is a partially enlarged view of a second oil drain assembly of the spindle unit protecting mechanism of the present invention.
Wherein:
1: spindle case, 2: first oil drainage assembly, 3: second oil drainage assembly, 4: first seal member, 5: second seal member, 6: snap ring, 7: lower end cap, 8: oil cylinder, 9: action lever, 11: main shaft, 12: drive motor, 13: first bearing set, 131: first bearing set seal ring, 132: second bearing set seal ring, 14: second bearing set, 141: third bearing set seal ring, 15: grating scale, 151: mounting sleeve, 16: first sleeve, 17: oil drainage passage, 18: positioning mounting plate, 19: dust cover, 20: second sleeve, 21: oil slinging mounting disc, 22: first oil slinger, 23: first oil drain sleeve, 24: first drain hole, 31: second oil thrower, 32: second oil drain sleeve, 33: oil drainage groove, 41: first seal sleeve, 42: first air pipe, 43: air passage, 51: second air pipe, 52: second seal sleeve, 53: air holes, a: a flange.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.
Example one
Referring to the attached drawings, the protection mechanism for the spindle unit comprises a spindle box body 1, a spindle 11, a driving motor 12, a first bearing group 13, a second bearing group 14, a first oil drainage component 2 and a second oil drainage component 3, wherein the driving motor 12 is sleeved at the middle position of the spindle 11, the driving motor 12 is a torque motor, and the torque motor drives the spindle to rotate; the first bearing group 13 is sleeved on the main shaft 11 and positioned above the driving motor 12, the first oil drainage component 2 is installed between the first bearing group 13 on the main shaft 11 and the driving motor 12, and the first oil drainage component 2 is used for draining the grease leaked from the first bearing group 13 out of the main shaft unit, so that the driving motor 12 is protected; the second bearing group 14 is sleeved on the main shaft 11 and located below the driving motor 12, a grating ruler 15 is arranged below the second bearing group 14, and the second oil drainage component 14 is installed between the second bearing group 14 and the grating ruler 15 on the main shaft 11.
The number of the first bearing sets 13 is preferably 3, the top end of the first bearing set 13 is provided with a first bearing set sealing ring 131, the bottom end of the first bearing set 13 is provided with a second bearing set sealing ring 132, the first bearing set sealing ring 131 and the second bearing set sealing ring 132 are sleeved on the main shaft 11, and the outer edge of the first bearing set sealing ring 131 and the second bearing set sealing ring 132 is provided with a groove for storing a lubricant to prevent grease oozed out from the first bearing set 13 from directly seeping out through a matching gap; a first sleeve 16 is sleeved outside the first bearing group 13, and the spindle box body 1 is sleeved outside the first sleeve 16 through bolts; the second bearing set sealing ring 132 positioned at the lower end of the first bearing set 13 is in clearance fit with the inner wall of the first sleeve 16, and grease in the first bearing set 13 can seep out through the clearance after long-term working and falls to the first oil drainage component 2. Specifically, the first oil drainage assembly 2 comprises an oil slinger mounting disc 21, a first oil slinger 22 and a first oil drainage sleeve 23, the first oil slinger 22 is fixed at the bottom end of the oil slinger mounting disc 21 through bolts, the oil slinger mounting disc 21 and the first oil slinger 22 are fixedly sleeved on the main shaft 11, when the main shaft 11 rotates, the first oil slinger 22 rotates synchronously with the main shaft 11 to throw out the grease seeped out from the first bearing group 13 to the first oil slinger 22 all around, the first oil drainage sleeve 23 is positioned outside the first oil slinger 22 and fixedly embedded at the lower edge of the first sleeve 16 to form a cavity with the first oil slinger 22 and the oil slinger mounting disc 21, a groove for receiving the grease is formed at the bottom of the first oil drainage sleeve 23, a first oil drainage hole 24 is formed at the bottom of the side wall of the first oil drainage sleeve 23, the first oil slinger 22 throws the grease seeped out from the first bearing group 13 to the side wall of the first oil drainage sleeve 23, and the grease can flow into the groove under the influence of gravity, and flow to first draining hole 24, first draining cover 23 outside is main shaft box 1, is provided with the draining passageway 17 corresponding with first draining hole 24 on main shaft box 1 lateral wall, and grease prevents that grease from causing the pollution to driving motor 12 and main shaft 11 through first draining hole 24 and draining passageway 17 discharge the main shaft unit.
A first sealing component 4 is arranged above the first bearing group 13 and comprises a first sealing sleeve 41 and a first air pipe 42, the first sealing sleeve 41 is arranged on the outer sides of the main shaft 11 and the first bearing group sealing ring 131 and is in clearance fit with the main shaft 11 and cannot rotate along with the main shaft, and the lower edge of the first sealing sleeve 41 is attached to the top end of the first bearing group 13 and plays a role in sealing the main shaft 11 and the first bearing group 13; the top end of the main shaft 11 is fixedly connected with a positioning installation disc 18 through a bolt, the positioning installation disc 18 can rotate along with the main shaft, a circle of grooves are formed in the lower edge of the positioning installation disc 18, a circle of bosses are correspondingly arranged at the top of the first sealing sleeve 41, and the grooves and the bosses are in clearance fit, so that external particles can be effectively prevented from entering the main shaft unit; an air passage 43 is arranged on the outer edge of the first sealing sleeve 41, the outer port of the air passage 43 is connected with the first air pipe 42, and the inner port of the air passage 43 is led to the inner sides of the groove and the boss; during operation, the first air pipe 42 is connected to an air pump to blow air into the main shaft unit, so that air pressure is formed in the main shaft unit, and impurities such as cutting chips and oil stains can be further prevented from entering the main shaft unit from a gap between the first sealing sleeve 41 and the groove and the boss of the positioning mounting disc 18. Furthermore, the outer edge of the positioning mounting disc 18 is fixedly provided with a dustproof sleeve 19 to prevent cutting chips or cooling liquid from entering the main shaft unit through a gap between the first sealing sleeve 41 and the positioning mounting disc 18.
The number of the second bearing sets 14 is preferably 2, a third bearing set sealing ring 141 is sleeved on the main shaft 11 at the upper end of the second bearing set 14, and a groove is formed in the outer edge of the third bearing set sealing ring 141 and used for storing a lubricant; a second sleeve 20 is sleeved on the outer side of the second bearing group 14, and the second sleeve 20 is hermetically installed with the main shaft box body 1 through bolts; the second oil drainage assembly 3 is arranged at the lower end of the second bearing group 14, and specifically, the second oil drainage assembly 3 comprises a second oil slinger 31 and a second oil drainage sleeve 32, the second oil slinger 31 is arranged at the lower end of the second bearing group 14, the outer edge of the second oil slinger 31 is in clearance fit with the inner wall of the second sleeve 20, the lower end of the outer edge of the second oil slinger 31 is provided with a circle of flange a with an inverted triangular cross section, and plays a role in downwards guiding overflowed grease (here, the second oil slinger 31 is equivalent to a sealing ring and an oil slinger), the second oil drainage sleeve 32 is fixed at the lower end of the second sleeve 20 through bolts, a clamping ring 6 is sleeved at the lower end of the second oil slinger 31 of the main shaft 11, and the clamping ring 6 is screwed into the main shaft 11 through threads to fix the second oil slinger 31 and the main shaft; a circle of oil drainage grooves 33 are formed in the second oil drainage sleeve 32, when the second oil slinger 31 rotates along with the spindle 11 in work, grease in the second bearing group 14 overflows downwards through a gap between the second oil slinger 31 and the second sleeve 20, and is thrown into the oil drainage grooves 33 of the second oil drainage sleeve 32 under the drainage effect of a flange a at the lower end of the outer edge of the second oil slinger 31; and a second oil drainage hole (not shown in the figure due to a view angle) is formed in the bottom of the side wall of the second oil drainage sleeve 32, and the grease is discharged out of the spindle unit through the second oil drainage hole. The installation cover 151 is installed through the bolt in 11 bottoms of main shaft, and installation cover 151 can be along with the synchronous rotation of main shaft, fixed mounting grating chi 15 on the installation cover 151, and second draining subassembly 3 can prevent that grease from oozing into grating chi 15 in the second bearing group 14 on, influences grating chi 15's normal use.
The outer side of the grating ruler 15 is provided with a second sealing part 5, the second sealing part 5 comprises a second air pipe 51 and a second sealing sleeve 52, the side wall of the second sealing sleeve 52 is provided with an air hole 53, the second air pipe 51 is arranged on the air hole 53 on the side wall of the outer side of the second sealing sleeve 52, the second sealing sleeve 52 is sleeved on the outer edge of the second oil drainage sleeve 32 and the outer edge of the lower end cover 7 to form a sealing cavity, the grating ruler 15 is arranged in the sealing cavity, the second air pipe 51 is connected into an air pump to blow air to the second air pipe 51, pollutants on the grating ruler 15 can be blown off, meanwhile, a pressure difference higher than the external air pressure is generated in the sealing cavity, and the external polluted air is isolated from entering.
Example two
In the first embodiment, the spindle is of a hollow structure, the middle of the spindle is a cavity, the action rod 9 is arranged in the cavity, the lower end cover 7 is provided with a through hole at the center, the positioning mounting disc 18 is provided with a through hole at the center, the upper end of the action rod 9 is arranged in the through hole of the positioning mounting disc 18, the lower end of the action rod 9 is arranged in the through hole of the lower end cover 7, the bottom of the lower end cover 7 is provided with the oil cylinder 8 through a bolt, and the oil cylinder 8 can drive the action rod 9 to push out a workpiece at the top of the spindle unit.
EXAMPLE III
In embodiment one on first let out oil jacket 23 on be provided with a N first draining hole 24, N is greater than or equal to 2, first draining hole 24 central symmetry sets up in first let out oil jacket 23 lateral wall bottom, further says so, the same position sets up a N drainage passageway 17 on the main shaft box 1 lateral wall, let out the grease outside the main shaft unit, sets up a plurality of first draining holes 24 and can promote grease discharge efficiency, simultaneously, prevents to set up only that one first draining hole 24 from blockking up the back and influencing the draining effect. Furthermore, M second oil drainage holes are formed in the second oil drainage sleeve 32, M is larger than or equal to 2, and the centers of the second oil drainage holes are symmetrically arranged at the bottom end of the side wall of the second oil drainage sleeve 32, so that oil drainage efficiency is improved.
Example four
In the first embodiment, the number of the first air pipes 42 is X, X is greater than or equal to 2, correspondingly, the first sealing sleeve 41 is provided with X air passages 43, the air passages 43 are arranged in central symmetry, when the spindle unit is used, the plurality of first air pipes 42 are simultaneously blown, the capability of isolating impurities such as external cutting chips or cooling liquid in the spindle unit is improved, and meanwhile, the protection effect of the first sealing part 4 is prevented from being influenced by blockage caused by long-time use of the single air passage 43. Further, the number of the second air pipes 51 in the second sealing part 5 is Y, Y is larger than or equal to 2, correspondingly, Y air holes 53 are formed in the side wall of the second sealing sleeve 52, the air holes 53 are arranged on the side wall of the second sealing sleeve 52 in central symmetry, the second air pipes 51 are arranged on the air holes 53, air is blown to the plurality of second air pipes 51 simultaneously, the removing capability of impurities on the surface of the grating ruler 15 is improved, and meanwhile, the protective effect that the second sealing part 5 is influenced by blockage caused by long-time use of the single air holes 53 can be prevented.
The invention has been described by way of example, and it is to be understood that any simple variation, modification or equivalent replacement by a person skilled in the art without inventive step falls within the scope of protection of the present invention without departing from the core of the present invention.
Claims (10)
1. A main shaft unit protection mechanism is characterized by comprising a main shaft box body, a main shaft, a driving motor, a grating ruler, a first bearing group, a second bearing group, a first oil drainage component, a second oil drainage component, a first sealing part and a second sealing part, wherein the driving motor is sleeved in the middle of the main shaft; the first oil drainage assembly comprises a first oil thrower disc and a first oil drainage sleeve, the first oil thrower disc is sleeved on the main shaft and can rotate along with the main shaft, the first oil drainage sleeve is positioned at the lower end of the first bearing group, the first oil drainage sleeve is fixed on the inner wall of the main shaft box body and positioned outside the first oil thrower disc, a groove is formed in the bottom of the first oil drainage sleeve, a first oil drainage hole is formed in the groove, and an oil drainage channel is formed in the main shaft box body at a position corresponding to the first oil drainage hole; the first sealing component comprises a first air pipe and a first sealing sleeve, the first sealing sleeve is sleeved on the main shaft and is positioned at the top end of the first bearing group, the first sealing sleeve is provided with an internal ventilation air passage, and the first air pipe is arranged on the air passage; the second oil drainage assembly comprises a second oil thrower disc and a second oil drainage sleeve, the second oil thrower disc is sleeved on the main shaft, can rotate along with the main shaft and is positioned at the lower end of the second bearing group, the second oil drainage sleeve is fixed at the bottom end of the main shaft box body and comprises an oil drainage groove, the oil drainage groove is positioned below the second oil thrower disc, and a second oil drainage hole is formed in the oil drainage groove; the second sealing component comprises a second air pipe and a second sealing sleeve, the second sealing sleeve is fixed at the bottom end of the second oil drainage sleeve and covers the grating ruler to form a sealing cavity, an air hole is formed in the side wall of the second sealing sleeve, and the second air pipe is installed on the air hole.
2. The spindle unit protection mechanism as claimed in claim 1, wherein the first bearing set is sleeved with a first sleeve, the spindle box is fixedly mounted on the outer side of the first sleeve by bolts, the first oil drainage sleeve is fixed at the bottom end of the first sleeve by bolts, and the first sealing sleeve is fixedly mounted at the top end of the first sleeve by bolts.
3. The spindle unit protection mechanism of claim 2, wherein the spindle is sleeved with a first bearing set sealing ring and a second bearing set sealing ring, the first bearing set sealing ring is disposed at an upper end of the first bearing set, the second bearing set sealing ring is disposed at a lower end of the first bearing set, outer edges of the first bearing set sealing ring and the second bearing set sealing ring are provided with grooves, the first sleeve is sleeved at outer edges of the first bearing set sealing ring and the second bearing set sealing ring, the first bearing set sealing ring is in clearance fit with the first sealing sleeve, and the second bearing set sealing ring is in clearance fit with the first sleeve.
4. The spindle unit protecting mechanism according to claim 1, wherein a second sleeve is sleeved around the second bearing set, and the second sleeve is fixed to the bottom end of the main spindle housing by a bolt.
5. The protection mechanism for the main shaft unit according to claim 4, wherein the main shaft is sleeved with a third bearing set sealing ring arranged at the upper end of the second bearing set, the second oil thrower disc and the outer edge of the third bearing set sealing ring are provided with grooves, the second sleeve is sleeved at the outer edges of the third bearing set sealing ring and the second oil thrower disc, and the second oil thrower disc and the third bearing set sealing ring are in clearance fit with the second sleeve.
6. The spindle unit protection mechanism according to claim 1, wherein a mounting sleeve is fixed to a bottom end of the spindle through a bolt, the mounting sleeve can rotate synchronously with the spindle, and the grating ruler is fixedly mounted on the mounting sleeve.
7. The spindle unit protection mechanism according to claim 6, wherein a lower end cap is fixedly connected to the bottom of the mounting sleeve, an upper edge of the second sealing sleeve is sleeved on the bottom of the second oil drainage sleeve, a lower edge of the second sealing sleeve is sleeved on an outer edge of the lower end cap, a sealing cavity is formed in the middle of the second sealing sleeve, and the grating ruler is located in the sealing cavity.
8. The spindle unit protecting mechanism according to claim 7, wherein a positioning installation plate is fixedly installed at the top end of the spindle, a through hole is formed in the middle of the positioning installation plate, a clamping groove is formed at the top end of the first sealing sleeve, the air outlet of the air passage is formed in the clamping groove, the lower edge of the positioning installation plate is clamped in the clamping groove, a dustproof sleeve is installed at the outer edge of the positioning installation plate, and the lower edge of the dustproof sleeve is lower than the first air pipe.
9. The protection mechanism of claim 8, wherein the main shaft is hollow, the middle of the main shaft is a hollow cavity, the action rod penetrates through the hollow cavity, a through hole is formed in the center of the lower end cover, the upper end of the action rod is located in the through hole of the positioning and mounting plate, the lower end of the action rod is located in the through hole of the lower end cover, and an oil cylinder for driving the action rod to move up and down is installed at the bottom of the lower end cover through a bolt.
10. The main shaft unit protection mechanism is characterized in that N first oil drainage holes are formed in the first oil drainage sleeve, N is larger than or equal to 2, the first oil drainage holes are symmetrically arranged at the bottom end of the side wall of the first oil drainage sleeve in the center, N oil drainage channels are arranged at the same position on the side wall of the main shaft box body, M is larger than or equal to 2, and the second oil drainage holes are symmetrically arranged at the bottom end of the side wall of the second oil drainage sleeve in the center; the number of the first air pipes is X, X is larger than or equal to 2, X air passages are arranged on the first sealing sleeve, the air passages are arranged in a central symmetry mode, the number of the second air pipes in the second sealing part is Y, Y is larger than or equal to 2, Y air holes are formed in the side wall of the second sealing sleeve, and the air holes are arranged on the side wall of the second sealing sleeve in a central symmetry mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111058057.3A CN113798524B (en) | 2021-09-09 | 2021-09-09 | Main shaft unit protection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111058057.3A CN113798524B (en) | 2021-09-09 | 2021-09-09 | Main shaft unit protection mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113798524A CN113798524A (en) | 2021-12-17 |
| CN113798524B true CN113798524B (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111058057.3A Active CN113798524B (en) | 2021-09-09 | 2021-09-09 | Main shaft unit protection mechanism |
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| Country | Link |
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| CN (1) | CN113798524B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5150994A (en) * | 1991-09-23 | 1992-09-29 | Kaven Hsu | Spindle means of machine center |
| JP4786258B2 (en) * | 2005-08-31 | 2011-10-05 | コマツＮｔｃ株式会社 | Machine tool spindle equipment |
| CN202343961U (en) * | 2011-11-15 | 2012-07-25 | 山东宏康机械制造有限公司 | Electric main shaft for lathe |
| CN203621510U (en) * | 2014-01-03 | 2014-06-04 | 王辉 | Electric spindle |
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2021
- 2021-09-09 CN CN202111058057.3A patent/CN113798524B/en active Active
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| CN113798524A (en) | 2021-12-17 |
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