CN112428216A - Split type high-speed motor rotor carbon fiber sheath press fitting device - Google Patents
Split type high-speed motor rotor carbon fiber sheath press fitting device Download PDFInfo
- Publication number
- CN112428216A CN112428216A CN202011267398.7A CN202011267398A CN112428216A CN 112428216 A CN112428216 A CN 112428216A CN 202011267398 A CN202011267398 A CN 202011267398A CN 112428216 A CN112428216 A CN 112428216A
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- press
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- base
- carbon fiber
- fiber sheath
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
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- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention provides a split type high-speed motor rotor carbon fiber sheath press-fitting device which comprises a press-fitting base; the press-fitting base is cylindrical, and the inner diameter of the press-fitting base is larger than the outer diameters of the carbon fiber sheath and the rotor assembly to be press-fitted; the press-fitting base is coaxially provided with a support cylinder, the outer diameter of the front end of the support cylinder is consistent with that of the carbon fiber sheath, and the edge of the rear end of the support cylinder is a cambered surface. The invention can press the carbon fiber sheath into the rotor component better under the size condition of interference fit, and reduce the press-fitting damage of the carbon fiber sheath.
Description
Technical Field
The invention relates to a split type high-speed motor rotor carbon fiber sheath press-fitting device.
Background
In the permanent magnet motor structure, the surface-mounted magnetic steel is easy to break or fly out under the action of high-speed rotating centrifugal force, and in order to ensure the reliable operation of the motor, the rotor assembly is usually protected by using a sheath. Along with the development requirements of aviation, aerospace, national defense, deep sea exploration and the like, the rotating speed of the motor is higher and higher, the centrifugal force borne by the magnetic steel of the rotor of the motor is larger and larger, and the application of the split type motor is more and more extensive in order to reduce the weight of the motor and the number of parts. The carbon fiber has the characteristics of better axial tensile strength and lighter weight than the traditional metal, good high temperature resistance and corrosion resistance, non-magnetic conductivity and the like, and gradually becomes the preferred material of the high-speed motor rotor sheath. However, the carbon fiber itself is a brittle material, the process of forming the sheath is a winding process, so that the carbon fiber sheath also has anisotropy, the strength of the carbon fiber sheath along the axial direction is generally low, meanwhile, the thermal expansion coefficient of the carbon fiber is low, interference installation cannot be well completed by a common hot sleeve method, when the common taper guiding press mounting is adopted, the taper part can generate pressure and deformation on the sheath, the pressure can decompose an axial component except for friction, and the component and the relative running direction of the sheath and the rotor are on the same straight line, so that the sheath can be broken or the carbon fiber is locally damaged.
Disclosure of Invention
In order to solve the technical problem, the invention provides the split type high-speed motor rotor carbon fiber sheath press-fitting device which can press the carbon fiber sheath into the rotor assembly better under the size condition of interference fit.
The invention is realized by the following technical scheme.
The invention provides a press-fitting device for a split type high-speed motor rotor carbon fiber sheath, which comprises a press-fitting base, wherein the press-fitting base is cylindrical, and the diameter of the inner circular surface III of the base of the press-fitting base is larger than the outer diameter (small clearance fit) of the carbon fiber sheath to be press-fitted; and a support cylinder is coaxially arranged in the press-fitting base, and the outer diameter of the support cylinder is smaller than the inner diameter of the carbon fiber sheath and forms small clearance fit.
The press-fitting base and the supporting cylinder are coaxially arranged.
The press-fitting base and the support cylinder are sleeved on the press-fitting shaft.
The press-mounting shaft is divided into a front section and a rear section, the outer diameter of the rear section is smaller than that of the front end, the diameter of the outer circular surface I of the press-mounting shaft of the rear section is smaller than that of the inner circular surface I of the base, and the press-mounting base is sleeved on the rear section of the press-mounting shaft.
The end part of the front section of the press-mounting shaft is provided with a concave table, and the outer diameter of the concave table is matched with the inner diameter of the rotor assembly.
The diameter of the outer circular surface II of the press-mounting shaft is larger than the inner diameter of the support cylinder.
The circumference of the rear section of the press-fitting shaft is provided with a stop block, a base groove and a supporting cylinder groove are respectively arranged on the press-fitting base and the inner ring of the supporting cylinder, and the shapes and the positions of the base groove and the supporting cylinder groove are matched with the stop block.
The press-fitting base is provided with base square holes which are two paths of parallel through holes, and a base plate penetrates through the base square holes to limit the distance between the rear inner wall of the press-fitting base and the rear end of the support cylinder.
The press-fitting base and the surface of the supporting cylinder are respectively provided with a base notch and a supporting cylinder notch, so that external force required during press fitting is reduced.
The outer diameter of the support cylinder and the inner diameter of the carbon fiber sheath form small clearance fit; and the outer circular surface I of the press-mounting shaft and the inner circular surface I of the base form small clearance fit.
The invention has the beneficial effects that: can reduce the pressure equipment damage of carbon fiber sheath with the rotor subassembly of impressing better of carbon fiber sheath under interference fit's size condition.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is a schematic view of the FIG. 1 in a disengaged state during use;
FIG. 3 is a schematic diagram of the intermediate state of FIG. 1 during use;
FIG. 4 is a schematic of the three-dimensional structure of FIG. 3;
FIG. 5 is a schematic view of the compact configuration of FIG. 1 during use;
FIG. 6 is an enlarged schematic view of the working surface of FIG. 5;
in the figure: 1-press-fitting shaft, 2-press-fitting base, 3-backing plate, 4-support cylinder, 5-press plate, 6-carbon fiber sheath, 7-rotor assembly, 11-stop block, 12-press-fitting shaft external circular surface I, 13-press-fitting shaft inclined surface, 14-press-fitting shaft external circular surface II, 21-base groove I, 22-base internal circular surface I, 23-base square hole, 24-base notch, 25-base internal circular surface II, 26-base shoulder, 27-base internal circular surface III, 41-support cylinder inclined surface, 42-support cylinder notch, 43-support cylinder groove, 44-support cylinder external circular surface, 45-support cylinder internal circular surface, 61-carbon fiber sheath internal circular surface, 62-carbon fiber sheath external circular surface.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
The press-fitting device for the split type high-speed motor rotor carbon fiber sheath shown in fig. 1 to 6 comprises a press-fitting base 2, wherein the press-fitting base 2 is cylindrical, and the diameter of the inner base circular surface III27 of the press-fitting base 2 is larger than the outer diameter of the carbon fiber sheath 6 to be press-fitted (small clearance fit); a supporting cylinder 4 is coaxially arranged in the press-fitting base 2, and the outer diameter of the supporting cylinder 4 is smaller than the inner diameter of the carbon fiber sheath 6 and forms small clearance fit.
The press-fitting base 2 and the support cylinder 4 are coaxially arranged.
The press-fitting base 2 and the support cylinder 4 are sleeved on the press-fitting shaft 1.
The press-fitting shaft 1 is divided into a front section and a rear section, the outer diameter of the rear section is smaller than that of the front end, the diameter of the outer circular surface I12 of the press-fitting shaft of the rear section is smaller than that of the inner circular surface I22 of the base, and the press-fitting base 2 is sleeved on the rear section of the press-fitting shaft 1.
The end part of the front section of the press-mounting shaft 1 is provided with a concave table, and the outer diameter of the concave table is matched with the inner diameter of the rotor assembly 7.
The diameter of the outer circular surface II14 of the press-mounting shaft is larger than the inner diameter of the support cylinder 4.
The circumference of the rear section of the press-fitting shaft 1 is provided with a stop block 11, the inner rings of the press-fitting base 2 and the support cylinder 4 are respectively provided with a base groove 21 and a support cylinder groove 43, and the base groove 21 and the support cylinder groove 43 are matched with the stop block 11 in shape and position.
A base square hole 23 is formed in the press-fitting base 2, the base square hole 23 is two paths of parallel through holes, and the base plate 3 penetrates through the base square hole 23 to limit the distance between the rear inner wall of the press-fitting base 2 and the rear end of the support cylinder 4.
The surfaces of the press-fitting base 2 and the supporting barrel 4 are respectively provided with a base notch 24 and a supporting barrel notch 42, so that external force required during press-fitting is reduced.
The outer diameter of the support cylinder 4 and the inner diameter of the carbon fiber sheath 6 form small clearance fit; the outer circular surface I of the press-fitting shaft and the inner circular surface I22 of the base form a small clearance fit.
Therefore, in the using process, the press fitting is realized by the way of firstly enlarging the size of the sheath and then carrying out parallel press fitting, so that the cracking condition of the carbon fiber sheath in the press fitting process is effectively reduced.
Example 1
By adopting the scheme, the most preferred embodiment of the invention mainly comprises a press-fitting shaft 1, a press-fitting base 2, a base plate 3, a support cylinder 4 and a press plate 5, and aims to stably and completely press-fit a carbon fiber sheath 6 on the surface of a rotor assembly 7 under the interference size fit and protect magnetic steel on the surface of the rotor assembly 7.
The surface of the press-fitting shaft 1 is provided with 3 stoppers 11 with uniformly distributed circumferences, the press-fitting shaft outer circular surface I12 and the base inner circular surface I22 of the base 2 are in small clearance fit, the press-fitting shaft 1 is ensured to be coaxial with the base 2 in the press-fitting process, the press-fitting shaft inclined surface 13 has a smaller inclination angle, the press-fitting shaft 1 can be guided to be pressed into the supporting cylinder 4, the size of the press-fitting shaft outer circular surface II14 is slightly larger than that of the supporting cylinder inner circular surface 45, and the size difference is approximate to the interference magnitude of the carbon fiber sheath 6 and the rotor assembly 7. Base 2's inside has the base recess 21 of 3 circumference equipartitions, make the dog 11 of pressure equipment axle 1 can pass through smoothly when the pressure equipment, the outside has 4 two liang base square holes 23 just to the distribution, the base incision 24 of a plurality of circumference equipartitions, the existence of base incision 24 has reduced the resistance to deformation ability of place circumference, reduce the required axial force in the pressure equipment process, the size of base interior circular surface II25 is big than carbon fiber sheath inner circular surface 61, reduce the lifting surface area of cylinder excircle face 44, base fender shoulder 26 plays location and axial supporting effect to carbon fiber sheath 6, initial base interior circular surface III27 is little clearance fit with carbon fiber sheath excircle face 62, also play the effect of location carbon fiber sheath 6. The backing plate 3 is provided with 2 backing plate legs 31, and the size of the backing plate legs 31 can be just inserted into the square holes 23 of the base in a penetrating mode, so that the axial movement of the support cylinder 4 is limited when needed in the press fitting process. The outside of the supporting cylinder 4 is provided with a supporting cylinder inclined surface 41 which guides the supporting cylinder 4 to enter the carbon fiber sheath 6 and is provided with a plurality of 42 uniformly distributed circumferences, the supporting cylinder notches 42 have the same function as the base notches 24 and reduce the deformation resistance of the circumference, the inside of the supporting cylinder is provided with 3 supporting cylinder grooves 43 uniformly distributed circumferentially, so that the stop block 11 of the press-mounting shaft 1 can smoothly pass through the supporting cylinder during press-mounting, the original size of the supporting cylinder outer circular surface 44 is in small clearance fit with the inner circular surface 61 of the carbon fiber sheath, the diameter of the supporting cylinder outer circular surface 44 after press-mounting is equal to or slightly larger than the rotor assembly outer circular surface 71, and the supporting cylinder inner circular surface 45 and the press-mounting shaft outer circular surface II14 are set. The pressing plate 5 applies an axial force to the press-fitting shaft 1 and the rotor assembly 7 simultaneously through the pressing plate end face 51, and when the pressing plate end face 51 comes into contact with the base 2, press-fitting is completed. The inner circular surface 61 of the carbon fiber sheath and the outer circular surface 71 of the rotor assembly are set to be in interference fit according to requirements.
The specific use steps are as follows:
firstly, the pad legs 31 of the pad 3 penetrate through the base 2 through the square holes 23 of the base, 6 are arranged at the base retaining shoulder 26 of the base 2 and the inner circle surface III27 of the base, and the support cylinder 4 is placed inside the base 2;
secondly, rotating the press-fitting shaft 1 to enable 3 stop blocks 11 of the press-fitting shaft 1 to be staggered with 3 supporting cylinder grooves 43 of the supporting cylinder 4, and enabling the supporting cylinder 4 to be tightly attached to the base plate 3 by axially moving the press-fitting shaft 1, wherein the state is shown in fig. 2;
rotating the press-fitting shaft 1 to enable 3 stop blocks 11 of the press-fitting shaft 1 to be opposite to 3 supporting cylinder grooves 43 penetrating through the supporting cylinders 4, moving and rotating the press-fitting shaft 1 again to enable 3 stop blocks 11 of the press-fitting shaft 1 to penetrate through 3 base grooves 21 of the base 2, and enabling the press-fitting shaft inclined plane 13 to be just in contact with the inner circular surface 45 of the supporting cylinder;
mounting the rotor assembly 7 on the press-mounting shaft 1 and pressing the rotor assembly by using the pressing plate 5, fixing the pressing plate 5 on the press-mounting shaft 1 by using a screw, or vertically placing the whole for use (the pressing plate 5 is upward);
fifthly, the whole body consisting of the pressing plate 5, the rotor component 7 and the press-mounting shaft 1 moves to the bottom towards the base 2 by external force, namely, the side surface of the press-mounting shaft 1 contacts with the side surface of the support cylinder 4, the inclined surface 13 of the press-mounting shaft plays a role in guiding in the process, and finally the inner diameter of the inner circular surface 61 of the carbon fiber sheath is expanded by the shape change of the support cylinder 4, wherein the state is shown in figures 3 and 4;
sixthly, the pad legs 31 of the pad 3 are removed from the base 2, the pressing plate 5 is continuously moved towards the base 2 by external force until the pressing plate end face 51 of the pressing plate 5 is contacted with the base 2, the press mounting of the carbon fiber sheath 6 and the rotor assembly 7 is completed, and the state is shown in figure 5;
seventhly, the press-mounting shaft 1 moves towards the end of the press plate 5 through external force until the surface of the outer circular surface II14 of the press-mounting shaft is not positioned in the cavity of the base 2, the circumferential tension of the base 2 is small due to the existence of the base notch 24, meanwhile, the carbon fiber sheath 6 is tightly fitted on the rotor assembly 7 in an interference manner, and the whole body formed by the carbon fiber sheath 6 and the rotor assembly 7 can be separated from the base 2;
get down the whole that clamp plate 5 and carbon fiber sheath 6 and rotor subassembly 7 are constituteed in proper order, rotatory pressure equipment axle 1 makes 3 dogs 11 of pressure equipment axle 1 and 3 of propping a section of thick bamboo 4 prop a section of thick bamboo recess 43 dislocation, continues to promote pressure equipment axle 1 to the direction of withdrawing from base 2 through external force, until prop a section of thick bamboo 4 and withdraw from base 2 cavity completely. If the middle support cylinder 4 is completely withdrawn in the step (c), the step (b) is not performed.
When the press fitting process of the carbon fiber sheath 6 is carried out, the rotor assembly 7 can be shrunk, and the size of the carbon fiber sheath 6 which needs to be enlarged is reduced. The outer cylindrical surface 44 of the support cylinder may optionally be treated with a lubricating agent, such as a surface treatment or a spray coating of a lubricating medium compatible with the carbon fibers.
Therefore, based on the most preferable scheme shown in the above embodiment, the following effects can be achieved:
a. the circumferences of the carbon fiber sheaths of the base 2 and the support cylinder 4 are provided with openings distributed circumferentially, so that the axial external force required by press fitting is reduced;
b. the supporting cylinder 4 is directly pressed in and pulled out through the stop block 11 on the press-fitting shaft 1, so that the use of other extra tools is reduced, and the whole press-fitting process has convenient repeatability;
c. in the whole press fitting process, the carbon fiber sheath 6 firstly performs size expansion without obvious relative sliding, and then performs the relative sliding of the inner circular surface 61 of the carbon fiber sheath without size expansion, namely, except friction force, the carbon fiber sheath 6 is not in a straight line by the external force direction and the surface motion direction, and simultaneously can selectively perform lubrication treatment on the outer circular surface 44 of the support cylinder, or perform cold contraction on the rotor assembly 7 in advance, thereby greatly reducing the press fitting rupture condition of the carbon fiber sheath 6.
Claims (10)
1. The utility model provides a split type high-speed electric motor rotor carbon fiber sheath pressure equipment device, includes pressure equipment base (2), its characterized in that: the press-fitting base (2) is cylindrical, and the diameter of the inner circle surface III (27) of the press-fitting base (2) is larger than the outer diameter of the carbon fiber sheath (6) to be press-fitted (small clearance fit); a supporting cylinder (4) is coaxially arranged in the press-fitting base (2), and the outer diameter of the supporting cylinder (4) is smaller than the inner diameter of the carbon fiber sheath (6) and forms small clearance fit.
2. The split type high-speed motor rotor carbon fiber sheath press-fitting device of claim 1, wherein: the press-fitting base (2) and the support cylinder (4) are coaxially arranged.
3. The split type high-speed motor rotor carbon fiber sheath press-fitting device of claim 1, wherein: the press-fitting base (2) and the support cylinder (4) are sleeved on the press-fitting shaft (1).
4. The split type high-speed motor rotor carbon fiber sheath press-fitting device of claim 3, wherein: the press-fitting shaft (1) is divided into a front section and a rear section, the outer diameter of the rear section is smaller than that of the front end, the diameter of the outer circular surface I (12) of the press-fitting shaft of the rear section is smaller than that of the inner circular surface I (22) of the press-fitting shaft, and the press-fitting base (2) is sleeved on the rear section of the press-fitting shaft (1).
5. The split type high-speed motor rotor carbon fiber sheath press-fitting device of claim 4, wherein: the end part of the front section of the press-mounting shaft (1) is provided with a concave table, and the outer diameter of the concave table is matched with the inner diameter of the rotor assembly (7).
6. The split type high-speed motor rotor carbon fiber sheath press-fitting device of claim 4, wherein: the diameter of the outer circular surface II (14) of the press-mounting shaft is larger than the inner diameter of the support cylinder (4).
7. The split type high-speed motor rotor carbon fiber sheath press-fitting device of claim 3, wherein: the circumference of the rear section of the press-fitting shaft (1) is provided with a stop block (11), inner rings of the press-fitting base (2) and the support cylinder (4) are respectively provided with a base groove (21) and a support cylinder groove (43), and the base groove (21) and the support cylinder groove (43) are matched with the stop block (11) in shape and position.
8. The split type high-speed motor rotor carbon fiber sheath press-fitting device of claim 1, wherein: a base square hole (23) is formed in the press-fitting base (2), the base square hole (23) is two paths of parallel through holes, and a base plate (3) penetrates through the base square hole (23) to limit the distance between the rear inner wall of the press-fitting base (2) and the rear end of the support cylinder (4).
9. The split type high-speed motor rotor carbon fiber sheath press-fitting device of claim 1, wherein: the surfaces of the press-fitting base (2) and the supporting cylinder (4) are respectively provided with a base notch (24) and a supporting cylinder notch (42), so that external force required during press-fitting is reduced.
10. The split type high-speed motor rotor carbon fiber sheath press-fitting device of claim 1 or 4, wherein: the outer diameter of the support cylinder (4) and the inner diameter of the carbon fiber sheath (6) form small clearance fit; the outer circular surface I of the press-fitting shaft and the inner circular surface I (22) of the base form small clearance fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011267398.7A CN112428216A (en) | 2020-11-13 | 2020-11-13 | Split type high-speed motor rotor carbon fiber sheath press fitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011267398.7A CN112428216A (en) | 2020-11-13 | 2020-11-13 | Split type high-speed motor rotor carbon fiber sheath press fitting device |
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| Publication Number | Publication Date |
|---|---|
| CN112428216A true CN112428216A (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011267398.7A Pending CN112428216A (en) | 2020-11-13 | 2020-11-13 | Split type high-speed motor rotor carbon fiber sheath press fitting device |
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| CN (1) | CN112428216A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114362457A (en) * | 2021-12-30 | 2022-04-15 | 航天科工智能机器人有限责任公司 | Rotor sheath assembling device and method |
| CN114799818A (en) * | 2022-06-24 | 2022-07-29 | 国茂精密传动(常州)有限公司 | Automatic press-fitting tool and method for wave generator |
| WO2023006225A1 (en) * | 2021-07-30 | 2023-02-02 | Schunk Kohlenstofftechnik Gmbh | Method and device for pressing a reinforcing sleeve onto a rotor of an electric motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023006225A1 (en) * | 2021-07-30 | 2023-02-02 | Schunk Kohlenstofftechnik Gmbh | Method and device for pressing a reinforcing sleeve onto a rotor of an electric motor |
| CN114362457A (en) * | 2021-12-30 | 2022-04-15 | 航天科工智能机器人有限责任公司 | Rotor sheath assembling device and method |
| CN114799818A (en) * | 2022-06-24 | 2022-07-29 | 国茂精密传动(常州)有限公司 | Automatic press-fitting tool and method for wave generator |
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Application publication date: 20210302 |
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| RJ01 | Rejection of invention patent application after publication |