CN111313597A - Motor shaft surface coating structure for power tool turret - Google Patents
Motor shaft surface coating structure for power tool turret Download PDFInfo
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- CN111313597A CN111313597A CN202010243048.0A CN202010243048A CN111313597A CN 111313597 A CN111313597 A CN 111313597A CN 202010243048 A CN202010243048 A CN 202010243048A CN 111313597 A CN111313597 A CN 111313597A
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- oil seal
- wear
- flange plate
- main shaft
- resistant coating
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B25/00—Accessories or auxiliary equipment for turning-machines
- B23B25/04—Safety guards specially designed for turning machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
The invention relates to a motor shaft surface coating structure for a power tool turret, which comprises a main shaft, a front bearing and a rear bearing, wherein the front bearing and the rear bearing are assembled at two sides of the main shaft; the front flange plate and the rear flange plate are arranged at two ends of the spindle box; an end cover is arranged on the outer side of the front flange plate, and a front oil seal and a rear oil seal are respectively arranged in the end cover and the rear flange plate; the oil seal lips of the front oil seal and the rear oil seal are in contact with the excircle of the main shaft and are in sliding friction, and the contact areas of the main shaft and the front oil seal and the rear oil seal are respectively provided with a front wear-resistant coating and a rear wear-resistant coating; the invention has compact structure, solves the problem of difficult sealing of the main shaft caused by the structure that the main shaft box is arranged in the cutter head, and can greatly improve the service life of the sealing structure especially when the main shaft rotates at high speed.
Description
Technical Field
The invention belongs to the technical field of power turrets, and particularly relates to a motor shaft surface coating structure for a power turret.
Background
The power tool turret is one of functional components of a numerical control lathe, a power tool is installed on the tool turret for cutting, and therefore a motor for driving the tool to rotate needs to be installed on the tool turret.
In view of the above problems, it is necessary to improve them.
Disclosure of Invention
The invention provides a motor shaft surface coating structure for a power tool turret, which is used in cooperation with a high-speed oil seal to ensure that the interior of a main shaft box can be effectively sealed for a long time when the main shaft rotates at a high speed to avoid damage to the interior of the main shaft box caused by cutting fluid when the main shaft box is arranged in a cutter head.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a motor shaft surface coating structure for a power tool turret comprises a main shaft, a front bearing and a rear bearing, wherein the front bearing and the rear bearing are assembled on two sides of the main shaft; the front flange plate and the rear flange plate are arranged at two ends of the spindle box; an end cover is arranged on the outer side of the front flange plate, and a front oil seal and a rear oil seal are respectively arranged in the end cover and the rear flange plate; the oil seal lips of the front oil seal and the rear oil seal are in contact with the excircle of the main shaft and are in sliding friction, and the contact areas of the main shaft and the front oil seal and the rear oil seal are respectively provided with a front wear-resistant coating and a rear wear-resistant coating.
As a preferred scheme of the invention, the front oil seal is arranged in the end cover in an interference fit manner, the front oil seal is abutted against the end face of the front flange plate along the axial direction, the rear oil seal is arranged in the rear flange plate in an interference fit manner, and the rear oil seal is abutted against the inner end face of the rear flange plate along the axial direction.
As a preferable scheme of the invention, a motor stator is arranged in the spindle box, correspondingly, a motor rotor is arranged on the outer circle of the spindle, and the motor stator and the motor rotor jointly act to drive the spindle to rotate.
As a preferred scheme of the invention, the excircle of the main shaft is connected with the inner hole of the motor rotor in an interference fit manner, and meanwhile, a certain gap is kept between the excircle of the motor rotor and the inner hole of the motor stator.
As a preferred scheme of the invention, two ends of the part of the excircle of the motor stator, which protrudes out of the end face of the spindle box, are respectively in adaptive connection with the front flange plate and the rear flange plate; a sealing ring is arranged between the motor stator and the spindle box; and a sealing ring is arranged between the motor stator and the front flange plate and between the motor stator and the rear flange plate.
As a preferable aspect of the present invention, the coating layers of the front wear-resistant coating layer and the rear wear-resistant coating layer are DLC coatings.
In a preferred embodiment of the present invention, the DLC coating has a thickness of 1 to 10 μm.
In a preferred embodiment of the present invention, the coating of the front wear-resistant coating and the rear wear-resistant coating is a MoS2 coating.
In a preferable embodiment of the invention, the thickness of the MoS2 coating is 2-5 μm.
As a preferable scheme of the present invention, the coating of the front wear-resistant coating and the rear wear-resistant coating is one of a titanium nitride coating, a titanium carbonitride coating and a chromium nitride coating.
The invention has the beneficial effects that:
1. the invention has compact structure, solves the problem of difficult sealing of the main shaft caused by the structure that the main shaft box is arranged in the cutter head, and can greatly improve the service life of the sealing structure especially when the main shaft rotates at high speed;
2. the spindle is simple in structure, the front wear-resistant coating and the rear wear-resistant coating are sprayed on the spindle and are positioned in contact areas of the spindle and the front oil seal and the rear oil seal, and in the initial running-in stage, the spindle is effectively prevented from being in direct contact with metal on the inner wall of the oil seal, so that a good initial anti-friction effect can be achieved, and the service life of the spindle is prolonged; meanwhile, the front wear-resistant coating and the rear wear-resistant coating also contribute to enhancing the bearing capacity of the main shaft;
3. a sealing ring is arranged between a motor rotor and a main shaft box; sealing rings are arranged between the motor rotor and the front flange plate and between the motor rotor and the rear flange plate; the sealing ring can play a role in static sealing and prevent fluids such as cutting fluid and the like from entering the spindle box;
4. the front oil seal is arranged in the end cover in an interference fit manner, the front oil seal is abutted against the end face of the front flange plate along the axial direction, the rear oil seal is arranged in the rear flange plate in an interference fit manner, and the rear oil seal is abutted against the inner end face of the rear flange plate along the axial direction; when in work, relative sliding friction is generated to play a sealing role;
5. the front wear-resistant coating and the rear wear-resistant coating are DLC coatings, so that the wear resistance and the corrosion resistance of the outer ring of the main shaft can be effectively improved, the friction between the main shaft and an oil seal is improved, and the noise is improved;
6. the front wear-resistant coating and the rear wear-resistant coating are MoS2 coatings, and the MoS2 coatings have excellent lubricity, pressure resistance, corrosion resistance, low temperature and thermal stability, so that the coating can resist fatigue wear, erosion wear, wear particle wear and adhesive wear; the service life of the main shaft is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
reference numbers in the figures: the novel spindle comprises a spindle 1, an end cover 2, a front wear-resistant coating area 3, a front oil seal 4, a front bearing 5, a front flange plate 6, a motor rotor 7, a motor stator 8, a rear flange plate 9, a rear bearing 10, a rear oil seal 11, a rear wear-resistant coating area 12 and a spindle box 13.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
as shown in fig. 1, the motor shaft surface coating structure for the power turret provided by the embodiment includes a main shaft 1, a front bearing 5 and a rear bearing 10 assembled at two sides of the main shaft 1, the main shaft 1 is supported by the front bearing 5 and the rear bearing 10 at two ends and forms axial positioning, and the outer sides of the front bearing 5 and the rear bearing 10 are respectively connected with a front flange 6 and a rear flange 9; the front flange 6 and the rear flange 9 are arranged at two ends of the spindle box 13; an end cover 2 is arranged on the outer side of the front flange 6, and a front oil seal 4 and a rear oil seal 11 are respectively arranged in the end cover 2 and the rear flange 9; the oil seal lips of the front oil seal 4 and the rear oil seal 11 are in contact with the excircle of the main shaft 1 and are in sliding friction, and the contact areas of the main shaft 1 and the front oil seal 4 as well as the rear oil seal 11 are respectively provided with a front wear-resistant coating 3 and a rear wear-resistant coating 12; the spindle is simple in structure, the front wear-resistant coating and the rear wear-resistant coating are sprayed on the spindle and are positioned in contact areas of the spindle and the front oil seal and the rear oil seal, and in the initial running-in stage, the spindle is effectively prevented from being in direct contact with metal on the inner wall of the oil seal, so that a good initial anti-friction effect can be achieved, and the service life of the spindle is prolonged; meanwhile, the front wear-resistant coating and the rear wear-resistant coating also contribute to enhancing the bearing capacity of the main shaft.
The front oil seal 4 is arranged in the end cover 2 in an interference fit manner, the front oil seal 4 is abutted against the end face of the front flange 6 along the axial direction, only the sealing lip of the front oil seal 4 is contacted with the main shaft 1 of the rotary motion, the rear oil seal 11 is arranged in the rear flange 9 in an interference fit manner, and the rear oil seal 11 is abutted against the inner end face of the rear flange 9 along the axial direction; the oil seal lip of the rear oil seal 11 is in contact with the excircle of the rear end of the main shaft 1 to realize dynamic sealing.
A motor stator 8 is arranged in the spindle box 13, correspondingly, a motor rotor 7 is arranged on the outer circle of the spindle 1, and the motor stator 8 and the motor rotor 7 jointly act to drive the spindle 1 to rotate; the excircle of the main shaft 1 is connected with the inner hole of the motor rotor 7 in an interference fit mode, and meanwhile, the excircle of the motor rotor 7 and the inner hole of the motor stator 8 keep a certain gap.
Two ends of the part of the excircle of the motor stator 8 protruding out of the end face of the spindle box 13 are respectively in adaptive connection with the front flange 6 and the rear flange 9; a sealing ring is arranged between the motor stator 8 and the spindle box 13; sealing rings are arranged between the motor stator 8 and the front flange 6 and the rear flange 9; the sealing ring can play a role in static sealing and prevent fluids such as cutting fluid and the like from entering the spindle box;
the front wear-resistant coating 3 and the rear wear-resistant coating 12 are DLC coatings; the thickness of the DLC coating is 1-10 μm. The spindle has a simple structure, the spindle 1 is sprayed with the front wear-resistant coating 3 and the rear wear-resistant coating 12, the front wear-resistant coating 3 and the rear wear-resistant coating 12 are positioned in the contact areas of the front oil seal 4 and the rear oil seal 11 with the spindle 1, and in the initial running-in stage, the spindle 1 is effectively prevented from being in direct contact with the metals on the inner walls of the front oil seal 4 and the rear oil seal 11, so that a good initial anti-wear effect can be achieved, and the service life of the spindle 1 is prolonged; at the same time, the front wear-resistant coating 3 and the rear wear-resistant coating 12 also contribute to the load-bearing capacity of the spindle.
Specifically, the front wear-resistant coating 3 and the rear wear-resistant coating 12 are DLC coatings, wherein DLC is a short name for Diamond-like carbon, the DLC coating is translated into chinese, i.e., a Diamond-like coating, and is a metastable amorphous substance containing a Diamond structure (sp3 bond) and a graphite structure (sp2 bond), carbon atoms are mainly combined by sp3 and sp2 hybrid bonds, and the DLC coating has comprehensive excellent properties such as good wear resistance, low friction coefficient, good corrosion resistance, and the like; the front wear-resistant coating 3 and the rear wear-resistant coating 12 are DLC coatings, so that the wear resistance and corrosion resistance of the outer ring of the main shaft 1 can be effectively improved, the friction between the main shaft and the front oil seal 4 and the rear oil seal 11 is improved, and the noise is improved; the thickness of the DLC coating is 1-10 mu m, and in the embodiment, the thickness of the DLC coating is 5 mu m; simple structure, and good bonding force with the front oil seal 4 and the rear oil seal 11.
Example two:
the front wear-resistant coating 3 and the rear wear-resistant coating 12 in the embodiment are MoS2 coatings; the MoS2 coating has high binding force, is compact and seamless, can ensure that the coating does not fall off or peel off even under impact or collision, is firmly bound, has the hardness of 7H, and has long service life.
The MoS2 coating has excellent lubricity, pressure resistance, corrosion resistance, low temperature and thermal stability and the like, and can resist fatigue wear, erosion wear, wear particle wear and adhesive wear.
The MoS2 coating has a coefficient of friction as low as 0.06-0.08, prevents parts from being occluded, reduced in drag, worn and stuck, has a wide range of applicable temperature, load and speed changes, and is particularly excellent in high-load applications.
The MoS2 coating can resist the high temperature of 400 ℃, can not generate the problems of peeling, cracking, discoloring and shedding at the high temperature, can not embrittle at the low temperature and still has the lubricating property.
The high-temperature oxidation resistance and corrosion resistance are excellent, and the wear resistance, corrosion resistance and friction reduction of the main shaft are greatly improved, so that the service life is prolonged; the thickness of the MoS2 coating is 2-5 mu m; in this example, the thickness of the coating of MoS2 was 3 μm.
Other contents of this embodiment can refer to embodiment one.
Example three:
the front wear-resistant coating 3 and the rear wear-resistant coating 12 in this embodiment are one of a titanium nitride coating, a titanium carbonitride coating and a chromium nitride coating; in the initial stage of running-in, the direct contact between the main shaft and the metal on the inner wall of the oil seal is effectively avoided, a good initial anti-wear effect can be achieved, and the service life of the main shaft is prolonged; meanwhile, the wear-resistant coating also contributes to enhancing the bearing capacity of the main shaft; specifically, in the present embodiment, the thickness of the front wear-resistant coating 3 and the rear wear-resistant coating 12 is 4 μm.
Other contents of this embodiment can refer to the first embodiment or the second embodiment.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: the terms main shaft 1, end cover 2, front wear-resistant coating area 3, front oil seal 4, front bearing 5, front flange 6, motor rotor 7, motor stator 8, rear flange 9, rear bearing 10, rear oil seal 11, rear wear-resistant coating area 12, main shaft box 13, etc., but do not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. The utility model provides a motor shaft surface coating structure for power sword tower which characterized in that: the device comprises a main shaft (1), a front bearing (5) and a rear bearing (10) which are assembled at two sides of the main shaft (1), wherein the main shaft (1) is supported by the front bearing (5) and the rear bearing (10) at two ends to form axial positioning, and the outer sides of the front bearing (5) and the rear bearing (10) are respectively connected with a front flange plate (6) and a rear flange plate (9); the front flange plate (6) and the rear flange plate (9) are arranged at two ends of the spindle box (13); an end cover (2) is arranged on the outer side of the front flange plate (6), and a front oil seal (4) and a rear oil seal (11) are respectively arranged in the end cover (2) and the rear flange plate (9); the oil seal lips of the front oil seal (4) and the rear oil seal (11) are in contact with the excircle of the main shaft (1) and are in sliding friction, and the contact areas of the main shaft (1) and the front oil seal (4) and the rear oil seal (11) are respectively provided with a front wear-resistant coating (3) and a rear wear-resistant coating (12).
2. The motor shaft surface coating structure for the power tool turret according to claim 1, wherein: the front oil seal (4) is arranged in the end cover (2) in an interference fit mode, the front oil seal (4) is abutted to the end face of the front flange plate (6) along the axial direction, the rear oil seal (11) is arranged in the rear flange plate (9) in an interference fit mode, and the rear oil seal (11) is abutted to the inner end face of the rear flange plate (9) along the axial direction.
3. The motor shaft surface coating structure for the power tool turret according to claim 1, wherein: and a motor stator (8) is arranged in the spindle box (13), correspondingly, a motor rotor (7) is arranged on the excircle of the spindle (1), and the motor stator (8) and the motor rotor (7) jointly act to drive the spindle (1) to rotate.
4. The motor shaft surface coating structure for a power tool turret according to claim 1, 2 or 3, wherein: the excircle of the main shaft (1) is connected with the inner hole of the motor rotor (7) in an interference fit mode, and meanwhile, the excircle of the motor rotor (7) and the inner hole of the motor stator (8) keep a certain gap.
5. The motor shaft surface coating structure for the power tool turret according to claim 4, wherein: two ends of the part of the excircle of the motor stator (8) protruding out of the end face of the spindle box (13) are respectively connected with the front flange plate (6) and the rear flange plate (9) in a matching way; a sealing ring is arranged between the motor stator (8) and the spindle box (13); and a sealing ring is arranged between the motor stator (8) and the front flange (6) and between the motor stator and the rear flange (9).
6. The motor shaft surface coating structure for a power tool turret according to any of claims 1 to 5, wherein: the front wear-resistant coating (3) and the rear wear-resistant coating (12) are DLC coatings.
7. The motor shaft surface coating structure for the power tool turret according to claim 6, wherein: the DLC coating has a thickness of 1-10 μm.
8. The motor shaft surface coating structure for the power tool turret according to claim 1, wherein: the front wear-resistant coating (3) and the rear wear-resistant coating (12) are MoS2 coatings.
9. The motor shaft surface coating structure for a power tool turret according to claim 8, wherein: the thickness of the MoS2 coating is 2-5 mu m.
10. The motor shaft surface coating structure for the power tool turret according to claim 1, wherein: the front wear-resistant coating (3) and the rear wear-resistant coating (12) are one of a titanium nitride coating, a titanium carbonitride coating and a chromium nitride coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243048.0A CN111313597A (en) | 2020-03-31 | 2020-03-31 | Motor shaft surface coating structure for power tool turret |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243048.0A CN111313597A (en) | 2020-03-31 | 2020-03-31 | Motor shaft surface coating structure for power tool turret |
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| Publication Number | Publication Date |
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| CN111313597A true CN111313597A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010243048.0A Pending CN111313597A (en) | 2020-03-31 | 2020-03-31 | Motor shaft surface coating structure for power tool turret |
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| CN (1) | CN111313597A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747119A (en) * | 2020-12-23 | 2021-05-04 | 北方民族大学 | Sealing structure of gear honing machine gear honing wheel frame |
-
2020
- 2020-03-31 CN CN202010243048.0A patent/CN111313597A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747119A (en) * | 2020-12-23 | 2021-05-04 | 北方民族大学 | Sealing structure of gear honing machine gear honing wheel frame |
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