CN110860702A - Dynamic sealed spindle box - Google Patents
Dynamic sealed spindle box Download PDFInfo
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- CN110860702A CN110860702A CN201911184636.5A CN201911184636A CN110860702A CN 110860702 A CN110860702 A CN 110860702A CN 201911184636 A CN201911184636 A CN 201911184636A CN 110860702 A CN110860702 A CN 110860702A
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- ring
- circular ring
- air passage
- annular
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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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- Mechanical Engineering (AREA)
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Abstract
The invention relates to the technical field of spindle boxes, and particularly discloses a dynamic seal type spindle box which comprises a box body and a seal unit, wherein the seal unit comprises a first circular ring, a second circular ring and a third circular ring, the first circular ring is fixedly arranged on the side wall of the box body, an inner rubber gasket is clamped between the first circular ring and the side wall of the box body, the second circular ring and the third circular ring are in interference fit with a spindle, an annular sliding groove is formed in the first circular ring, an annular sliding rail is arranged on the second circular ring, the third circular ring is attached to the first circular ring and the second circular ring, an annular meshing groove is formed in the side wall of the first circular ring, an annular meshing part is formed in the side wall of the third circular ring, a drainage channel and a first air passage and a second air passage which are obliquely arranged and communicated are formed in the inner part of the third circular ring, and the drainage channel is communicated with. The centrifugal force that this scheme produced when utilizing the main shaft to rotate throws away the cooling water in the air flue and the drop of water that the water smoke condenses into through drainage channel, avoids in the liquid gets into the box, prolongs the life of headstock.
Description
Technical Field
The invention relates to the technical field of spindle boxes, and particularly discloses a dynamic seal type spindle box.
Background
The main spindle box generally includes a box body, a main spindle penetrating the box body, a bearing assembly, a brake unit, a lubrication unit, and the like, and the main spindle is connected to a sidewall of the box body through the bearing assembly. One end of the main shaft is connected with the power source, the other end of the main shaft is provided with a clamp mounting part, and a part to be processed is fixed at the end of the main shaft through a clamp so as to process the part. Because in the course of working, the high-speed rotatory cutter and the friction heat production of spare part, consequently can generally water the purpose of cooling water in order to reach the cooling to the processing position, the in-process produces water smoke easily, and then, cooling water and water smoke get into the bearing assembly on this side headstock lateral wall easily, lead to bearing assembly impaired, have shortened bearing assembly's life.
Disclosure of Invention
The invention aims to provide a dynamic seal type main spindle box to solve the problem that cooling water and water mist easily enter a bearing assembly to cause damage to the bearing assembly.
In order to achieve the purpose, the basic scheme of the invention is as follows: the movable sealing type spindle box comprises a box body, a spindle penetrates through the box body, the spindle is connected with the box body through a bearing assembly, sealing units are arranged on two sides of the box body and comprise a first circular ring, a second circular ring and a third circular ring, the first circular ring penetrates through the spindle and then is fixedly installed on the side wall of the box body, an inner rubber gasket is clamped between the first circular ring and the side wall of the box body, and the end part of the inner rubber gasket abuts against the end face of the bearing assembly; the second ring and the third ring are in interference fit with the main shaft, the second ring is positioned in the ring of the first ring, the circumferential wall of the first ring close to the second ring is provided with a plurality of annular sliding grooves, the circumferential wall of the second ring close to the first ring is provided with a plurality of annular sliding rails in clearance fit with the annular sliding grooves, and the clearance value between the annular sliding rails and the annular sliding grooves is zero; the third circular ring is attached to the first circular ring and the second circular ring, a plurality of annular occlusion grooves are formed in the side wall of the first circular ring, a plurality of annular occlusion parts matched with the annular occlusion grooves are formed in the side wall of the third circular ring, and the gap value between the annular occlusion grooves and the annular occlusion parts is zero; a drainage channel, a first air passage and a second air passage which are obliquely arranged are formed in the third circular ring, the first air passage penetrates through the third circular ring, one end of the first air passage is connected with the annular meshing part, and the distance from one end, close to the bearing assembly, of the first air passage to the spindle is larger than the distance from one end, far away from the bearing assembly, of the first air passage to the spindle; the drainage channel is communicated with the first air passage, the second air passage is opposite to the first air passage in the inclination direction, one end of the second air passage is connected with the annular occlusion part, and the other end of the second air passage is communicated with the first air passage.
The working principle and the beneficial effects of the basic scheme are as follows: in this basic scheme, through the sealed of outer rubber packing ring and interior rubber packing ring for cooling water and the passageway that water smoke can get into the bearing assembly shifts to the junction of first ring and third ring, and the junction of first ring and second ring. However, the annular meshing groove and the annular meshing portion form a primary sealing structure, namely, a primary sealing structure is formed between the first circular ring and the third circular ring, and the annular sliding groove and the annular sliding rail form a secondary sealing structure, namely, a secondary sealing structure is formed between the first circular ring and the second circular ring, so that cooling water and water mist are difficult to enter the bearing assembly. Moreover, the first air passage obliquely arranged on the third ring can guide the cooling water entering the primary sealing structure into the first air passage and discharge the cooling water through the drainage channel under the action of centrifugal force; and even if the cooling water and the water mist enter the first-stage sealing structure, the cooling water and the water mist are thrown into the second air passage under the action of centrifugal force and are discharged through the drainage passage before entering the second-stage sealing structure. Therefore, this basic scheme increases substantially the degree of difficulty that cooling water and water smoke got into the bearing subassembly, effectively avoids cooling water and water smoke to get into in the bearing subassembly promptly, prolongs bearing subassembly's life.
Optionally, the sealing unit further includes a fourth ring, the fourth ring is in interference fit with the spindle, and the fourth ring is located inside the box body; an elastic sealing ring is fixedly connected to the circumferential wall of the fourth ring, and the elastic sealing ring is abutted to the side wall of the box body.
One side of keeping away from first ring through fourth ring and elastic sealing ring seal bearing subassembly improves the sealed degree to bearing assembly.
Optionally, a plurality of sealing convex rings are integrally formed on the circumferential wall of the elastic sealing ring, and a plurality of ring grooves matched with the sealing convex rings are formed on the side wall of the box body.
The sealing convex ring and the annular groove form a bent inner sealing structure, so that the sealing effect is improved.
Optionally, a cavity is opened inside the elastic sealing ring.
The elastic sealing ring is internally provided with a cavity so as to improve the deformation capacity of the elastic sealing ring and facilitate better use.
Optionally, the sealing unit further comprises an inner sealing block, the inner sealing block is a trapezoidal column and a cylinder which are integrally formed, the inner sealing block is in interference fit with the spindle, and the inner sealing block is arranged inside the box body; the lateral wall of box and the periphery wall clearance fit of interior seal piece, and the lateral wall of box and the clearance value of interior seal piece are zero.
The lateral wall of box and interior seal block clearance fit form special-shaped inner seal structure, realize keeping away from the sealed of one side of first ring to bearing assembly, improve the sealed degree to bearing assembly.
Optionally, a flow channel is formed in the side wall of the box body, the top end of the flow channel is connected with the inner sealing block, the bottom end of the flow channel penetrates through the side wall of the box body, and a fiber desiccant sheet is adhered to the inner wall of the flow channel.
Because the inner sealing block is in interference fit with the main shaft, the inner sealing block rotates, water mist is thrown into the flow channel under the action of centrifugal force and gravity after entering the inner sealing structure, the fiber drying agent sheets in the flow channel absorb the water mist, the dryness of the inner sealing structure is kept, and the water mist is prevented from entering the bearing assembly.
Optionally, the first ring is fixedly mounted on the outer side wall of the box body through screws.
The first ring is convenient to disassemble and the inner rubber gasket is convenient to replace.
Optionally, an outer rubber gasket is arranged on the outer side of the inner rubber gasket, and the screw is located between the outer rubber gasket and the inner rubber gasket.
Set up outer rubber gasket and interior rubber gasket, carry out dual waterproof function, further avoid cooling water and water smoke to get into in the bearing subassembly.
Optionally, a rubber strip is arranged between the outer rubber gasket and the inner rubber gasket, and the rubber strip is connected with the inner rubber gasket and the outer rubber gasket.
When the inner rubber gasket is connected with the outer rubber gasket, a worker can conveniently take and place the inner rubber gasket and the outer rubber gasket at one time, and the operation is convenient.
Optionally, a desiccant bag is arranged between the outer rubber gasket and the inner rubber gasket, and a fiber desiccant is filled in the desiccant bag.
The fibrous desiccant in the desiccant packet is capable of absorbing moisture so that the air between the outer rubber gasket and the inner rubber gasket remains dry, adding a protective layer to prevent cooling water and water mist from entering the bearing assembly.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a dynamic seal type spindle box according to the present invention;
FIG. 2 is a longitudinal cross-sectional view of the case;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a longitudinal sectional view of a housing in a second embodiment of a dynamically sealed spindle head according to the present invention;
FIG. 5 is an enlarged view of portion B of FIG. 4;
FIG. 6 is a longitudinal sectional view of a third case of the embodiment of the movable sealed spindle head of the present invention;
fig. 7 is an enlarged schematic view of portion C of fig. 6.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the drying device comprises a box body 1, a main shaft 2, a bearing assembly 3, a first ring 4, a second ring 5, a third ring 6, screws 7, an outer rubber gasket 8, an inner rubber gasket 9, a drying agent bag 10, an annular slide rail 11, an annular meshing part 12, a primary sealing structure 13, a secondary sealing structure 14, a drainage channel 15, a first air channel 16, a second air channel 17, a fourth ring 18, an elastic sealing ring 19, a sealing convex ring 20, a cavity 21, an inner sealing structure 22, an inner sealing block 23, a flow channel 24 and a fiber drying agent sheet 25.
Example one
This embodiment is substantially as shown in fig. 1 and 2: the dynamic seal type spindle box comprises a box body 1, a spindle 2 penetrates through the box body 1, and the spindle 2 is connected with the box body 1 through a bearing assembly 3. The both sides of box 1 are equipped with sealed unit, and sealed unit includes first ring 4, second ring 5 and third ring 6, and first ring 4 passes through behind the main shaft 2 through screw 7 fixed mounting on the lateral wall of box 1. As shown in fig. 3, an outer rubber gasket 8 and an inner rubber gasket 9 are clamped between the first ring 4 and the sidewall of the housing 1, and an end of the inner rubber gasket 9 abuts against an end surface of the bearing assembly 3. Be equipped with the rubber strip between outer rubber packing ring 8 and the interior rubber packing ring 9, rubber gasket and outer rubber gasket in the rubber strip is connected, and the thickness of rubber strip is less than interior rubber gasket. A desiccant bag 10 is arranged between the outer rubber gasket 8 and the inner rubber gasket 9, a fiber desiccant is filled in the desiccant bag 10, and the fiber desiccant absorbs moisture so that air between the inner rubber gasket 9 and the outer rubber gasket 8 is kept dry.
The third ring 6 is attached to the first ring 4 and the second ring 5, two annular occlusion grooves are formed in the side wall of the first ring 4, two annular occlusion parts 12 matched with the annular occlusion grooves are integrally formed in the side wall of the third ring 6, and the gap value between the annular occlusion grooves and the annular occlusion parts 12 is zero.
The inside of third ring 6 has seted up drainage channel 15, the first air flue 16 and the second air flue 17 of slope setting, and the quantity of first air flue 16 is two, and first air flue 16 runs through third ring 6, and first air flue 16 is close to the one end of first ring 4 and links up with annular interlock portion 12, and the distance that the one end that first air flue 16 is close to bearing assembly 3 apart from main shaft 2 is greater than the distance that first air flue 16 kept away from bearing assembly 3's one end apart from main shaft 2. The drainage channel 15 is communicated with the first air passage 16, the inclination direction of the second air passage 17 is opposite to that of the first air passage 16, one end, close to the first circular ring 4, of the second air passage 17 is connected with the annular occlusion part 12, and the other end of the second air passage 17 is communicated with the first air passage 16.
In this embodiment, the passage through which cooling water and water mist can enter the bearing assembly 3 is diverted to the junction of the first ring 4 and the third ring 6, and the junction of the first ring 4 and the second ring 5, by the sealing of the outer rubber gasket 8 and the inner rubber gasket 9. However, since the annular engaging groove and the annular engaging portion 12 form a primary sealing structure 13, that is, the primary sealing structure 13 is formed between the first ring 4 and the third ring 6, and the annular sliding groove and the annular sliding rail 11 form a secondary sealing structure 14, that is, the secondary sealing structure 14 is formed between the first ring 4 and the second ring 5, the difficulty of the cooling water and the water mist entering the bearing assembly 3 is high.
Moreover, when cooling water and water smoke get into one-level seal structure 13, the first air flue 16 that slopes to set up on third ring 6 can guide cooling water and water smoke that get into in one-level seal structure 13 to first air flue 16 in, and, because third ring 6 and 2 interference fit of main shaft, consequently, third ring 6 follows main shaft 2 and rotates, and first air flue 16 communicates with drainage channel 15 in addition, and then, under the centrifugal force effect, the drop of water that cooling water and water smoke condense becomes discharges through drainage channel 15.
And even if the cooling water and the water mist enter the first-stage sealing structure 13 and come to the joint of the second circular ring 5 and the third circular ring 6, before the cooling water and the water mist enter the second-stage sealing structure 14, the cooling water and the water mist are thrown into the second air passage 17 under the action of centrifugal force so as to enter the first air passage 16, and then the water mist is condensed into water drops and is discharged through the drainage passage 15 together with the cooling water under the action of centrifugal force and gravity.
And returning to the next step, even if the cooling water and the water mist escape the action of the centrifugal force and start to enter the secondary sealing structure 14, the process that the cooling water and the water mist enter the bearing assembly 3 is very difficult because the secondary sealing structure 14 is bent and wound, the cooling water and the water mist cannot easily enter the bearing assembly 3, and the bearing assembly 3 is not easily damaged.
In conclusion, the outside cooling water and the water mist of the box body 1 are difficult to enter the bearing assembly 3, so that the outside cooling water and the water mist are effectively prevented from entering the bearing assembly 3, and the service life of the bearing assembly 3 is prolonged.
Example two
The difference between the present embodiment and the first embodiment is: as shown in fig. 4 and 5, the sealing unit further includes a fourth ring 18, the fourth ring 18 is in interference fit with the main shaft 2, and the fourth ring 18 is located inside the box body 1. An elastic sealing ring 19 is fixedly connected to the circumferential wall of the fourth ring 18, three sealing convex rings 20 are integrally formed on the circumferential wall of the elastic sealing ring 19, and three ring grooves matched with the sealing convex rings 20 are formed on the side wall of the box body 1. The cavity 21 is opened in the elastic sealing ring 19 to improve the deformability of the elastic sealing ring 19, which is more convenient for use.
In this embodiment, the fourth ring 18 and the elastic sealing ring 19 are used to seal the side of the sealed bearing assembly 3 away from the first ring 4, and the sealing convex ring 20 and the ring groove form the curved inner sealing structure 22, so that even if water mist enters the inside of the box 1 through other parts of the box 1, the water mist is difficult to enter the bearing assembly 3 through the inner sealing structure 22, the sealing effect on the bearing assembly 3 is further enhanced, and the service life of the bearing assembly 3 is prolonged.
EXAMPLE III
The difference between the present embodiment and the first embodiment is: as shown in fig. 6 and 7, the sealing unit further includes an inner sealing block 23, the inner sealing block 23 is a trapezoidal column and a cylinder which are integrally formed, the inner sealing block 23 is in interference fit with the main shaft 2, and the inner sealing block 23 is located inside the box body 1. The side wall of the box body 1 is in clearance fit with the peripheral wall of the inner sealing block 23, and the clearance value between the side wall of the box body 1 and the inner sealing block 23 is zero. The side wall of the box body 1 is provided with a flow channel 24, the top end of the flow channel 24 is connected with the inner sealing block 23, the bottom end of the flow channel 24 penetrates through the side wall of the box body 1, and the inner wall of the flow channel 24 is adhered with a fiber desiccant sheet 25.
In this embodiment, the side wall of the box 1 and the inner sealing block 23 are in clearance fit to form the special-shaped inner sealing structure 22, and the inner sealing block 23 is in interference fit with the spindle 2, so that the inner sealing block 23 rotates along with the spindle 2, the water mist entering the inner sealing structure 22 is thrown into the flow channel 24 under the action of centrifugal force and gravity, and the fiber drying agent sheets 25 in the flow channel 24 absorb the water mist, so that the water mist is prevented from entering the bearing assembly 3. Therefore, even if water mist enters the inside of the box body 1 through other parts of the box body 1, the water mist is difficult to enter the bearing assembly 3, the sealing effect on the bearing assembly 3 is further enhanced, and the service life of the bearing assembly 3 is prolonged.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.
Claims (10)
1. Move sealed formula headstock, including the box, the box runs through there is the main shaft, is connected its characterized in that through bearing assembly between main shaft and the box: sealing units are arranged on two sides of the box body and comprise a first circular ring, a second circular ring and a third circular ring, the first circular ring penetrates through the main shaft and then is fixedly installed on the side wall of the box body, an inner rubber gasket is clamped between the first circular ring and the side wall of the box body, and the end part of the inner rubber gasket is abutted against the end face of the bearing assembly; the second ring and the third ring are in interference fit with the main shaft, the second ring is positioned in the ring of the first ring, the circumferential wall of the first ring close to the second ring is provided with a plurality of annular sliding grooves, the circumferential wall of the second ring close to the first ring is provided with a plurality of annular sliding rails in clearance fit with the annular sliding grooves, and the clearance value between the annular sliding rails and the annular sliding grooves is zero; the third circular ring is attached to the first circular ring and the second circular ring, a plurality of annular occlusion grooves are formed in the side wall of the first circular ring, a plurality of annular occlusion parts matched with the annular occlusion grooves are formed in the side wall of the third circular ring, and the gap value between the annular occlusion grooves and the annular occlusion parts is zero; a drainage channel, a first air passage and a second air passage which are obliquely arranged are formed in the third circular ring, the first air passage penetrates through the third circular ring, one end of the first air passage is connected with the annular meshing part, and the distance from one end, close to the bearing assembly, of the first air passage to the spindle is larger than the distance from one end, far away from the bearing assembly, of the first air passage to the spindle; the drainage channel is communicated with the first air passage, the second air passage is opposite to the first air passage in the inclination direction, one end of the second air passage is connected with the annular occlusion part, and the other end of the second air passage is communicated with the first air passage.
2. The dynamic seal type spindle box according to claim 1, characterized in that: the sealing unit further comprises a fourth ring, the fourth ring is in interference fit with the main shaft, and the fourth ring is located inside the box body; an elastic sealing ring is fixedly connected to the circumferential wall of the fourth ring, and the elastic sealing ring is abutted to the side wall of the box body.
3. The dynamic seal type spindle box according to claim 2, characterized in that: a plurality of sealing convex rings are integrally formed on the circumferential wall of the elastic sealing ring, and a plurality of annular grooves matched with the sealing convex rings are formed in the side wall of the box body.
4. A dynamically sealed spindle box according to claim 3, wherein: the elastic sealing ring is internally provided with a cavity.
5. The dynamic seal type spindle box according to claim 1, characterized in that: the sealing unit also comprises an inner sealing block, the inner sealing block is a trapezoidal column and a cylinder which are integrally formed, the inner sealing block is in interference fit with the main shaft, and the inner sealing block is arranged inside the box body; the lateral wall of box and the periphery wall clearance fit of interior seal piece, and the lateral wall of box and the clearance value of interior seal piece are zero.
6. The dynamic seal type spindle box according to claim 5, characterized in that: the lateral wall of box has seted up the runner, and the top and the interior sealing block of runner link up, and the lateral wall of box is run through to the bottom of runner, and the inner wall of runner is pasted and is had fibre drier piece.
7. The dynamic seal type spindle box according to claim 1, characterized in that: the first circular ring is fixedly installed on the outer side wall of the box body through screws.
8. The dynamic seal type spindle box according to claim 7, wherein: the outside of interior rubber packing ring is equipped with outer rubber packing ring, and the screw is located between outer rubber packing ring and the interior rubber packing ring.
9. The dynamically sealed spindle box according to claim 8, wherein: and a rubber strip is arranged between the outer rubber gasket and the inner rubber gasket and is connected with the inner rubber gasket and the outer rubber gasket.
10. The dynamically sealed spindle box of claim 9, wherein: and a drying agent bag is arranged between the outer rubber gasket and the inner rubber gasket, and a fiber drying agent is filled in the drying agent bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911184636.5A CN110860702B (en) | 2019-11-27 | 2019-11-27 | Dynamic sealed spindle box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911184636.5A CN110860702B (en) | 2019-11-27 | 2019-11-27 | Dynamic sealed spindle box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110860702A true CN110860702A (en) | 2020-03-06 |
| CN110860702B CN110860702B (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911184636.5A Active CN110860702B (en) | 2019-11-27 | 2019-11-27 | Dynamic sealed spindle box |
Country Status (1)
| Country | Link |
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| CN (1) | CN110860702B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03149103A (en) * | 1989-11-07 | 1991-06-25 | Toshin Seiki Kk | Bearing device for machine tool |
| CN101216109A (en) * | 2008-01-04 | 2008-07-09 | 洛阳轴研科技股份有限公司 | Sealing method for oil fog lubrication electric mainshaft bearing |
| CN203664694U (en) * | 2014-01-21 | 2014-06-25 | 台州市路桥区精达轴承厂 | Electric spindle |
| CN104613180A (en) * | 2014-09-25 | 2015-05-13 | 广州市昊志机电股份有限公司 | Improved electric spindle sealing structure and spindle core sealing device |
| CN106424768A (en) * | 2016-12-12 | 2017-02-22 | 重庆宏钢数控机床有限公司 | Motive seal type spindle box |
| CN106735337A (en) * | 2017-03-22 | 2017-05-31 | 陕西爱科仕精密科技有限公司 | A kind of new waterproof main shaft and waterproof enclosure |
| CN208138487U (en) * | 2018-03-21 | 2018-11-23 | 北京润科通用技术有限公司 | A kind of rotary packing ring and its mechanism for rotatory sealing |
-
2019
- 2019-11-27 CN CN201911184636.5A patent/CN110860702B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03149103A (en) * | 1989-11-07 | 1991-06-25 | Toshin Seiki Kk | Bearing device for machine tool |
| CN101216109A (en) * | 2008-01-04 | 2008-07-09 | 洛阳轴研科技股份有限公司 | Sealing method for oil fog lubrication electric mainshaft bearing |
| CN203664694U (en) * | 2014-01-21 | 2014-06-25 | 台州市路桥区精达轴承厂 | Electric spindle |
| CN104613180A (en) * | 2014-09-25 | 2015-05-13 | 广州市昊志机电股份有限公司 | Improved electric spindle sealing structure and spindle core sealing device |
| CN106424768A (en) * | 2016-12-12 | 2017-02-22 | 重庆宏钢数控机床有限公司 | Motive seal type spindle box |
| CN106735337A (en) * | 2017-03-22 | 2017-05-31 | 陕西爱科仕精密科技有限公司 | A kind of new waterproof main shaft and waterproof enclosure |
| CN208138487U (en) * | 2018-03-21 | 2018-11-23 | 北京润科通用技术有限公司 | A kind of rotary packing ring and its mechanism for rotatory sealing |
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| Publication number | Publication date |
|---|---|
| CN110860702B (en) | 2020-12-29 |
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Denomination of invention: Dynamic sealed spindle box Effective date of registration: 20230912 Granted publication date: 20201229 Pledgee: Liangjiang branch of Chongqing Rural Commercial Bank Co.,Ltd. Pledgor: CHONGQING HONGGANG CNC MACHINE Co.,Ltd. Registration number: Y2023500000068 |
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