CN215786782U - Direct-drive spindle unit for numerically controlled lathe - Google Patents
Direct-drive spindle unit for numerically controlled lathe Download PDFInfo
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- CN215786782U CN215786782U CN202121166353.0U CN202121166353U CN215786782U CN 215786782 U CN215786782 U CN 215786782U CN 202121166353 U CN202121166353 U CN 202121166353U CN 215786782 U CN215786782 U CN 215786782U
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Abstract
The utility model discloses a direct-drive spindle unit for a numerical control lathe, which comprises a spindle, wherein the spindle is supported on a spindle box body and a rear bearing cover through a front bearing and a rear bearing, a rear connecting disc is connected to the position, close to the rear end, of the spindle, a brake disc is connected to the rear connecting disc, the brake disc is matched with a brake, the brake is connected to a brake support, a motor is arranged in the spindle box body, close to the middle of the spindle, a stator of the motor is fixed on the spindle box body, and a rotor of the motor is installed on the spindle. The driving of the main shaft is changed into direct driving of the motor, so that the transmission mechanism is reduced, the integral volume is smaller, the power loss of the transmission mechanism is reduced, and the driving efficiency is higher; meanwhile, the brake disc and the brake are arranged in the utility model, and the brake can act on the brake disc to quickly stop the main shaft, so that the inertial rotation of the main shaft when the motor stops is effectively avoided, and the running precision is improved.
Description
Technical Field
The utility model relates to the technical field of machine tool equipment, in particular to a direct-drive spindle unit for a numerical control lathe.
Background
Through the rapid development of decades, domestic numerical control machines completely meet the market demands in the fields of economy and popularization. The medium-high-end numerical control machine tool cannot meet the market demand at present and basically depends on imported equipment. Meanwhile, with the continuous development and progress of the manufacturing industry, the requirements for the subdivision field of the numerical control machine tool are more and more. For example, in recent years, rapid development in the 5G industry and the optical field has made demands on numerically controlled lathes for high speed, high precision, high speed and stability of spindles.
However, in the existing lathe spindle unit, the rotation and stop of the spindle are realized by the action of the motor, so that when the motor stops acting, the spindle still rotates due to the inertia effect, and meanwhile, because the stopping moment of the motor is smaller than the processing moment of the tool, the tool still acts when the motor stops, so that the workpiece is over-processed, and the processing error is larger.
Disclosure of Invention
Aiming at the technical problems existing at present, the utility model provides a direct-drive spindle unit for a numerical control lathe, which aims to solve the problems in the prior art.
In order to achieve the above purpose, the utility model provides the following technical scheme:
a direct-drive spindle unit for a numerical control lathe comprises a spindle, wherein the spindle is supported on a spindle box body and a rear bearing cover through a front bearing and a rear bearing, the rear bearing cover is connected to the rear end of the spindle box body, a rear flange is connected to the position, close to the rear end, of the spindle, a brake disc is connected to the rear flange, the brake disc is matched with a brake, the brake is connected to a brake support, and the brake support is connected to the spindle box body;
and a motor is arranged in the main shaft box body and close to the middle part of the main shaft, a stator of the motor is fixed on the main shaft box body, and a rotor of the motor is arranged on the main shaft.
According to the technical scheme, the driving of the main shaft is changed into direct driving of the motor, so that the transmission mechanism is reduced, the integral size is smaller, the power loss of the transmission mechanism is reduced, and the driving efficiency is higher; meanwhile, the brake disc and the brake are arranged in the utility model, and the brake can act on the brake disc to quickly stop the main shaft, so that the inertial rotation of the main shaft when the motor stops is effectively avoided, and the running precision is improved.
Preferably, a magnetic head mounting block is connected to the rear end of the rear bearing cap, a magnetic encoder is mounted on the magnetic head mounting block, and the magnetic encoder and the magnetic head mounting block are both located in the encoder cover.
This scheme, accessible magnetic encoder monitors the revolution and the angle of verting of main shaft rotation in-process.
Preferably, a front labyrinth disc is sleeved at a position, located at the front end of the front bearing, of the main shaft, one end of the front labyrinth disc abuts against an inner ring of the front bearing, the other end of the front labyrinth disc abuts against a shaft shoulder of the main shaft, a front end cover is sleeved on the front labyrinth disc, and one side end face of the front end cover abuts against an outer ring of the front bearing and the main shaft box body.
Preferably, first sawtooth grooves are distributed on the periphery of the front labyrinth disc, first grooves are formed in the front end cover corresponding to the first sawtooth grooves, and the first grooves are communicated with the first sawtooth grooves.
According to the scheme, the first sawtooth groove and the first groove are equivalent to the water throwing groove, and chip liquid and other liquid can be thrown out of the first sawtooth groove in the rotating process of the main shaft, so that the liquid is prevented from entering the bearing.
Preferably, a front cover is sleeved on the main shaft at a position close to the front end of the main shaft, the front cover is fixedly connected with the front end cover in the axial direction, a second groove is distributed on the inner ring of the front cover, a second sawtooth groove is distributed on the outer peripheral surface of the main shaft at a position matched with the front cover, and the second sawtooth groove is communicated with the second groove.
According to the scheme, the effect of the first groove is the same as that of the first sawtooth groove, and the cutting fluid can be thrown out of the second sawtooth groove and then enters the second groove in the rotation process of the main shaft, so that the cutting fluid is effectively prevented from entering the inside of the bearing.
Preferably, the main shaft is sleeved with a front retainer ring, the main shaft is screwed with a front lock nut, the front lock nut and the front retainer ring are located between the motor and the front bearing, one end of the front retainer ring abuts against the front bearing, and the other end of the front retainer ring abuts against the front lock nut.
Preferably, a rear labyrinth disc is sleeved on the main shaft, one end of the rear labyrinth disc abuts against the rear receiving disc, and the other end of the rear labyrinth disc abuts against the rear bearing inner ring.
Preferably, a rear locking nut is further screwed on the main shaft, the rear locking nut is located between the rear labyrinth disc and the rear receiving disc, and the rear locking nut abuts against the rear labyrinth disc.
Compared with the prior art, the utility model has the beneficial effects that: the utility model changes the driving of the main shaft into the direct driving of the motor, thereby reducing the transmission mechanism and reducing the integral volume on one hand, and reducing the power loss of the transmission mechanism and having higher driving efficiency on the other hand; meanwhile, the brake disc and the brake are arranged in the utility model, and the brake can act on the brake disc to quickly stop the main shaft, so that the inertial rotation of the main shaft when the motor stops is effectively avoided, and the running precision is improved.
Description of the drawings:
FIG. 1 is a schematic view of a first embodiment of the present invention;
FIG. 2 is an enlarged view taken at I in FIG. 1;
fig. 3 is a schematic diagram of a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
Example one
The first embodiment as shown in fig. 1 and fig. 2 comprises a main shaft 1, the front end of the main shaft 1 is supported and mounted on a main shaft box 2 through a front bearing 5, a rear bearing 9 is sleeved at a position of the main shaft 1 close to the rear end of the main shaft 1, the rear bearing 9 is mounted in a rear bearing cover 12, the rear bearing cover 12 is connected at the rear end of the main shaft box 2, a motor 10 is arranged at a position close to the middle of the main shaft 1 in the main shaft box 2, a stator of the motor 10 is fixed on the main shaft box 2, a rotor of the motor 10 is mounted on the main shaft 1 through an expansion sleeve, direct driving of the main shaft 1 is achieved through the motor 10, and an intermediate transmission mechanism of a traditional driving mode is reduced.
The front labyrinth disc 6 is sleeved at the position, located at the front end of the front bearing 5, of the main shaft 1, one end of the front labyrinth disc 6 abuts against an inner ring of the front bearing 5, the other end of the front labyrinth disc abuts against a shaft shoulder of the main shaft 1, the front labyrinth disc 6 is sleeved with the front end cover 7, when seen from the drawing 1, the left end face of the front end cover 7 abuts against an outer ring of the front bearing 5 and the front end face of the main shaft box body 2, the right end face of the front end cover 7 abuts against the front cover cap 8, the front cover cap 7 is provided with a sealing ring on the end face abutting against the main shaft box body 2, the front cover cap 8 is sleeved at the position, close to the front end, of the main shaft 1, and meanwhile, the front cover cap 8 is connected with the front end cover cap 7 through screws in the axial direction.
As can be seen from fig. 2, the first sawtooth grooves 32 are distributed on the outer periphery of the front labyrinth disk 6, the first grooves 31 are formed in the front end cover 7 at positions corresponding to the first sawtooth grooves 32, and the first grooves 31 are communicated with the first sawtooth grooves 32, so that cutting fluid or other fluid can be thrown out of the first grooves through the first sawtooth grooves 32 in the rotation process of the main shaft 1, and the fluid is prevented from entering the bearing.
Similarly, a second groove 41 is distributed on the inner ring of the front cover 8, a second sawtooth groove 42 is distributed on the outer peripheral surface of the main shaft 1 at the matching position with the front cover 8, and the second sawtooth groove 42 is communicated with the second groove 41, so that cutting fluid or other fluid can be thrown out into the second groove 41 through the second sawtooth groove 42 in the rotation process of the main shaft 1, and the fluid is prevented from entering the inside of the bearing.
The front retaining ring 3 is sleeved on the main shaft 1, the front locking nut 4 is screwed on the main shaft 1, the front locking nut 4 and the front retaining ring 3 are positioned between the motor 10 and the front bearing 5, one end of the front retaining ring 3 abuts against the front bearing 5, and the other end of the front retaining ring abuts against the front locking nut 4.
The main shaft 1 is sleeved with a rear labyrinth disc 13 and a rear check ring 11, one end of the rear check ring 11 abuts against a shaft shoulder of the main shaft 1, the other end of the rear check ring abuts against the rear bearing 9, one end of the rear labyrinth disc 13 abuts against an inner ring of the rear bearing 9, the other end of the rear labyrinth disc abuts against a rear receiving disc 19, and meanwhile, an inner ring of the rear bearing cover 12 is matched with the rear labyrinth disc 13. The rear end of the rear bearing cap 12 is connected with a magnetic head mounting block 15, a magnetic encoder is mounted on the magnetic head mounting block 15, the magnetic encoder and the magnetic head mounting block 15 are both positioned in an encoder cover 14, and the encoder cover 14 is connected with the rear bearing cap 12 and a rear connecting disc 19.
The rear flange 19 is sleeved on the position, close to the rear end of the main shaft 1, the rear flange 19 is in key connection with the main shaft 1, the rear flange 19 is connected with a brake disc 18 through a connecting screw, the brake disc 18 is matched with a brake 17, the brake 18 is connected onto a brake support 16, the brake support 16 is connected onto the main shaft box body 2, the rear end cover 20 is further included, and the rear end cover 20 is connected with the rear flange 19 in the axial direction through the connecting screw.
Other elements not specifically described may be referred to in the art and will not be described in detail herein.
Example two
In the second embodiment shown in fig. 3, the rotor of the motor 10 is mounted differently, in this embodiment, the right end of the rotor of the motor 10 abuts against the shoulder of the main shaft 1, the left end of the rotor abuts against the rotor lock nut 100, and the rotor lock nut 100 is screwed on the main shaft 1, so as to fix the rotor of the motor 10. Meanwhile, the present embodiment is different from the previous embodiment in that a rear lock nut 21 is further screwed on the main shaft 1, the rear lock nut 21 is located between the rear flange 19 and the rear labyrinth disc 13, and the right end of the rear lock nut 21 abuts against the left end of the rear labyrinth disc 13, and other structures in the present embodiment are the same as those in the previous embodiment.
The foregoing describes preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A direct-drive spindle unit for a numerically controlled lathe comprises a spindle (1), wherein the spindle (1) is supported on a spindle box body (2) and a rear bearing cover (12) through a front bearing (5) and a rear bearing (9), and the rear bearing cover (12) is connected to the rear end of the spindle box body (2), and is characterized in that: a rear flange (19) is connected to the position, close to the rear end of the main shaft (1), of the main shaft, a brake disc (18) is connected to the rear flange (19), the brake disc (18) is matched with a brake (17), the brake (17) is connected to a brake support (16), and the brake support (16) is connected to the main shaft box body (2);
an electric motor (10) is arranged in the main shaft box body (2) and close to the middle of the main shaft (1), a stator of the electric motor (10) is fixed on the main shaft box body (2), and a rotor of the electric motor (10) is installed on the main shaft (1).
2. The direct-drive spindle unit for the numerically controlled lathe according to claim 1, characterized in that: the rear end of the rear bearing cover (12) is connected with a magnetic head mounting block (15), a magnetic encoder is mounted on the magnetic head mounting block (15), and the magnetic encoder and the magnetic head mounting block (15) are both positioned in an encoder cover (14).
3. The direct-drive spindle unit for the numerically controlled lathe according to claim 1, characterized in that: the main shaft (1) is provided with a front labyrinth disc (6) in a sleeved mode at the position of the front end of the front bearing (5), one end of the front labyrinth disc (6) abuts against the inner ring of the front bearing (5), the other end of the front labyrinth disc abuts against the shaft shoulder of the main shaft (1), a front end cover (7) is sleeved on the front labyrinth disc (6), and one side end face of the front end cover (7) abuts against the outer ring of the front bearing (5) and the main shaft box body (2).
4. The direct-drive spindle unit for the numerically controlled lathe according to claim 3, characterized in that: first sawtooth grooves (32) are distributed on the periphery of the front labyrinth disc (6), first grooves (31) are formed in the positions, corresponding to the first sawtooth grooves (32), of the front end cover (7), and the first grooves (31) are communicated with the first sawtooth grooves (32).
5. The direct-drive spindle unit for the numerically controlled lathe according to claim 3, characterized in that: the main shaft is characterized in that a front cover cap (8) is sleeved at a position, close to the front end of the main shaft, on the main shaft (1), the front cover cap (8) is fixedly connected with the front end cover (7) in the axial direction, second grooves (41) are distributed on the inner ring of the front cover cap (8), second sawtooth grooves (42) are distributed on the outer peripheral surface of the position, matched with the front cover cap (8), on the main shaft (1), and the second sawtooth grooves (42) are communicated with the second grooves (41).
6. The direct-drive spindle unit for a numerically controlled lathe according to any one of claims 3 to 5, wherein: the motor is characterized in that a front check ring (3) is sleeved on the main shaft (1), a front locking nut (4) is connected to the main shaft (1) in a threaded mode, the front locking nut (4) and the front check ring (3) are located between the motor (10) and the front bearing (5), one end of the front check ring (3) abuts against the front bearing (5), and the other end of the front check ring abuts against the front locking nut (4).
7. The direct-drive spindle unit for the numerically controlled lathe according to claim 6, wherein: the main shaft (1) is sleeved with a rear labyrinth disc (13), one end of the rear labyrinth disc (13) abuts against the rear receiving disc (19), and the other end of the rear labyrinth disc abuts against the inner ring of the rear bearing (9).
8. The direct-drive spindle unit for the numerically controlled lathe according to claim 7, wherein: a rear locking nut (21) is further screwed on the main shaft (1), the rear locking nut (21) is located between the rear labyrinth disc (13) and the rear receiving disc (19), and the rear locking nut (21) abuts against the rear labyrinth disc (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121166353.0U CN215786782U (en) | 2021-05-26 | 2021-05-26 | Direct-drive spindle unit for numerically controlled lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121166353.0U CN215786782U (en) | 2021-05-26 | 2021-05-26 | Direct-drive spindle unit for numerically controlled lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215786782U true CN215786782U (en) | 2022-02-11 |
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ID=80174090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121166353.0U Active CN215786782U (en) | 2021-05-26 | 2021-05-26 | Direct-drive spindle unit for numerically controlled lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215786782U (en) |
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2021
- 2021-05-26 CN CN202121166353.0U patent/CN215786782U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230705 Address after: No. 6, Jiangxi Road, Nanan District, Chongqing City, Chongqing Patentee after: CHONGQING MACHINE TOOL (Group) Co.,Ltd. Address before: No. 6, Jiangxi Road, Nanan District, Chongqing City, Chongqing Patentee before: CHONGQING NO.2 MACHINE TOOL WORKS Co.,Ltd. |