CN210830353U

CN210830353U - Direct-drive lead screw structure of powder press

Info

Publication number: CN210830353U
Application number: CN201921850316.4U
Authority: CN
Inventors: 吴向忠; 高明铭; 张虹; 李姝婷
Original assignee: Xiangtan Xinyun Technology Co ltd
Current assignee: Xiangtan Xinyun Technology Co ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-06-23
Anticipated expiration: 2029-10-24

Abstract

The utility model discloses a powder press directly drives lead screw structure, including torque motor, torque motor's inside embedding is connected with accurate lead screw, one side position that torque motor's inside is close to accurate lead screw is provided with the tight adapter sleeve that expands, torque motor's embedding is connected with motor packaging casing, motor packaging casing's one end has the casing cover through screw threaded connection, the one end that motor packaging casing was kept away from to the casing cover has the casing end cover through screw threaded connection. The utility model discloses in, wherein accurate lead screw is torque motor's output shaft, consequently need not use the shaft coupling, has eliminated the weak point of torsional rigidity among the traditional drive structure, has guaranteed the torsional rigidity of system, has guaranteed the positioning accuracy of output, has prevented because of the energy loss that the original piece torsional deformation caused in the transmission, has guaranteed the coaxial of motor drive center with accurate lead screw moreover, reduces the energy consumption that causes through the coaxial error of shaft coupling deformation compensation among the traditional structure.

Description

Direct-drive lead screw structure of powder press

Technical Field

The utility model relates to a lead screw structure field especially relates to a powder press directly drives lead screw structure.

Background

The ball screw structure is the most frequently used transmission element on tool machinery and precision machinery, the main function of the ball screw structure is to convert rotary motion into linear motion or convert torque into axial repeated acting force, and the ball screw structure has the characteristics of high precision, reversibility and high efficiency, and is widely applied to various industrial equipment and precision instruments due to small friction resistance;

the traditional precise screw driving unit is composed of a servo motor, a coupler and a screw, and is matched with a grating ruler to form a full closed-loop system to achieve the purpose of precise positioning, but in the application occasions of ultra-heavy-load precise driving and frequent forward and reverse movement, due to torsional rigidity limitation of the coupler of an intermediate transmission link and torsional deformation of the shaft end of a ball screw, the shaft system can generate torsional deformation with certain angular displacement, and particularly in the occasions with higher acceleration requirements, the torsional deformation has great influence and great energy loss on driving precision and driving dynamic performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and providing a powder press direct-drive lead screw structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a direct-drive lead screw structure of a powder press comprises a torque motor, wherein a precise lead screw is embedded and connected inside the torque motor, an expansion connecting sleeve is arranged at one side position, close to the precise lead screw, inside the torque motor, a motor packaging shell is connected in an embedded manner, one end of the motor packaging shell is connected with a shell cover through screw threads, one end, far away from the motor packaging shell, of the shell cover is connected with a shell end cover through screw threads, an encoder is arranged at the middle position, far away from the shell cover, of one side of the shell end cover, a motor driving center is arranged at the middle position between the shell end covers, the precise lead screw is embedded and connected with the motor driving center and the encoder, a wiring end is fixedly connected to one side of the outer surface of the motor driving center, and a lead wire interface is arranged at the, the motor packaging shell is characterized in that one end, away from the shell cover, of the motor packaging shell is connected with a fixed sealing cover through screw threads, one end, away from the motor packaging shell, of the fixed sealing cover is connected with a bearing packaging shell through screw threads, the inside of the bearing packaging shell is connected with a precise heavy-load bearing set, the precise heavy-load bearing set is connected with a precise lead screw in an embedded mode, and the precise lead screw is connected with a moving member through position threads, away from the bearing packaging shell, the torque motor, a motor driving center and an encoder.

As a further description of the above technical solution:

four fixed slots are formed in one side, away from the motor packaging shell, of the bearing packaging shell, and four fixing screws are connected to the inner portions of the fixed slots in a threaded mode.

As a further description of the above technical solution:

the outer surfaces of the parts of the precision lead screw embedded in the precision heavy-duty bearing group, the torque motor and the motor driving center are all smoothly arranged.

As a further description of the above technical solution:

the expansion connecting sleeve is connected with the precision lead screw in an embedded mode.

As a further description of the above technical solution:

the expansion connecting sleeve is in threaded connection with the inside of the torque motor through screws.

As a further description of the above technical solution:

the motor driving center is connected with the shell cover in an embedded mode.

The utility model discloses following beneficial effect has:

this powder press directly drives lead screw structure, wherein accurate lead screw is torque motor's output shaft, consequently need not use the shaft coupling, has eliminated the weak point of torsional rigidity among the traditional transmission structure, has guaranteed the torsional rigidity of system, has guaranteed the positioning accuracy of output, has prevented because of the energy loss that the original piece torsional deformation caused in the transmission, has guaranteed the coaxial of motor drive center and accurate lead screw moreover, reduces the energy consumption that warp the coaxial error of compensation through the shaft coupling among the traditional structure and leads to the fact.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a schematic view of the structure of the bearing packaging casing of the present invention.

Illustration of the drawings: 1. a torque motor; 2. a motor package housing; 3. expanding and tightly connecting the connecting sleeve; 4. a precision heavy-duty bearing set; 5. a precision lead screw; 6. an encoder; 7. a moving member; 8. a bearing packaging housing; 9. a housing cover; 10. a housing end cap; 11. fixing a sealing cover; 12. fixing grooves; 13. a set screw; 14. a terminal; 15. a wire interface; 16. the motor drives the center.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: a direct-drive lead screw structure of a powder press comprises a torque motor 1, a precise lead screw 5 is embedded and connected in the torque motor 1, an expansion connecting sleeve 3 is arranged at one side position, close to the precise lead screw 5, in the torque motor 1, a motor packaging shell 2 is embedded and connected in the torque motor 1, one end of the motor packaging shell 2 is connected with a shell cover 9 through screw threads, one end, far away from the motor packaging shell 2, of the shell cover 9 is connected with a shell end cover 10 through screw threads, an encoder 6 is arranged in the middle of one side, far away from the shell cover 9, of the shell end cover 10, a motor driving center 16 is arranged in the middle of the shell end cover 10, the precise lead screw 5 is embedded and connected with the motor driving center 16 and the encoder 6, a wiring terminal 14 is fixedly connected to one side of the outer surface of the motor driving center 16, and a lead, the one end that motor encapsulation casing 2 kept away from casing cover 9 has fixed closing cap 11 through screw threaded connection, the one end that motor encapsulation casing 2 was kept away from to fixed closing cap 11 has bearing encapsulation casing 8 through screw threaded connection, the inside embedding of bearing encapsulation casing 8 is connected with accurate heavy load bearing group 4, the embedding is connected between accurate heavy load bearing group 4 and the accurate lead screw 5, bearing encapsulation casing 8 is kept away from to accurate lead screw 5, torque motor 1, 16 position threaded connection with encoder 6 in motor drive center have moving member 7.

Four fixing grooves 12 are formed in one side, away from the motor packaging shell 2, of the bearing packaging shell 8, and fixing screws 13 are connected to the insides of the four fixing grooves 12 in a threaded mode, so that the device can be conveniently and integrally fixed to a powder press machine; the outer surfaces of the parts of the precision lead screw 5, which are embedded into the precision heavy-load bearing group 4, the torque motor 1 and the motor driving center 16, are all arranged smoothly, and the smooth parts of the precision lead screw 5 can facilitate the embedded connection between the precision lead screw 5 and the precision heavy-load bearing group 4, the torque motor 1 and the motor driving center 16; the expansion connecting sleeve 3 is connected with the precision lead screw 5 in an embedded manner, so that the precision lead screw 5 can be conveniently fixed in the torque motor 1; the expansion connecting sleeve 3 is in threaded connection with the inside of the torque motor 1 through a screw, and the expansion connecting sleeve 3 and the torque motor 1 can also play a role in fixing the precision lead screw 5; the motor driving center 16 is embedded and connected with the shell cover 9, so that the motor driving center 16 can be conveniently and fixedly installed.

The working principle is as follows: when a powder press direct-drive lead screw structure is used, firstly, a precision lead screw 5 is installed inside a torque motor 1, the precision lead screw 5 can be firmly fixed inside the torque motor 1 through an expansion connecting sleeve 3, then, the torque motor 1 is embedded inside a motor packaging shell 2, a fixing seal cover 11 is firstly installed with a bearing packaging precision lead screw 5 provided with a precision heavy-load bearing group 4, then, the precision lead screw 5 is embedded between the precision heavy-load bearing groups 4, then, the fixing seal cover 11 is fixed with the motor packaging shell 2, then, a motor driving center 16 and an encoder 6 are installed at the top end of the precision lead screw 5, then, an upper shell cover 9 and a shell end cover 10 are packaged, a worker connects a power supply for the motor driving center 16 on a wiring terminal 14 through a wire interface 15, a moving piece 7 is directly installed at the tail end of the precision lead screw 5, and finally, a fixing groove 12 on the bearing packaging shell 8 is fixed with the powder press through, when in operation, the torque motor 1 drives the precise screw rod 5 to rotate through the setting of the encoder 6 and the driving of the motor driving center 16, and the precise screw rod 5 is the output shaft of the torque motor 1, so that the moving member 7 can be directly driven to do linear motion, and a shaft coupler is not needed to be used, thereby eliminating the weak point of torsional rigidity in the traditional transmission structure, ensuring the torsional rigidity of the system, ensuring the positioning precision of output, preventing the energy loss caused by torsional deformation of the element in transmission, ensuring the coaxiality of the motor driving center 16 and the precise screw rod 5, reducing the energy consumption caused by compensating coaxial error through the deformation of the shaft coupler in the traditional structure, and having certain practicability.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. The utility model provides a powder press directly drives lead screw structure, includes torque motor (1), its characterized in that: the torque motor is characterized in that a precise lead screw (5) is embedded and connected in the torque motor (1), an expansion connecting sleeve (3) is arranged at one side position, close to the precise lead screw (5), in the torque motor (1), a motor packaging shell (2) is connected in the torque motor (1), a shell cover (9) is connected at one end of the motor packaging shell (2) through screw threads, a shell end cover (10) is connected at one end, far away from the motor packaging shell (2), of the shell cover (9), an encoder (6) is arranged at the middle position of one side, far away from the shell cover (9), of the shell end cover (10), a motor driving center (16) is arranged at the middle position between the shell end covers (10), the precise lead screw (5) is embedded and connected with the motor driving center (16) and the encoder (6), and a wiring terminal (14) is fixedly connected to one side of the outer surface of the motor driving center, wire interface (15) have been seted up to the position that the surface of casing cover (9) corresponds wiring end (14), the one end that casing cover (9) were kept away from in motor packaging casing (2) has fixed closing cap (11) through screw threaded connection, the one end that motor packaging casing (2) were kept away from in fixed closing cap (11) has bearing packaging casing (8) through screw threaded connection, the inside embedding of bearing packaging casing (8) is connected with accurate heavy load bearing group (4), the embedding is connected between accurate heavy load bearing group (4) and accurate lead screw (5), the position threaded connection that bearing packaging casing (8), torque motor (1), motor drive center (16) and encoder (6) were kept away from in accurate lead screw (5) has moving member (7).

2. The direct-drive lead screw structure of the powder press as claimed in claim 1, wherein: four fixing grooves (12) are formed in one side, away from the motor packaging shell (2), of the bearing packaging shell (8), and the fixing screws (13) are connected to the inner portions of the fixing grooves (12) in a threaded mode.

3. The direct-drive lead screw structure of the powder press as claimed in claim 1, wherein: the outer surfaces of the parts of the precision lead screw (5) embedded into the precision heavy-duty bearing group (4), the torque motor (1) and the motor driving center (16) are all smoothly arranged.

4. The direct-drive lead screw structure of the powder press as claimed in claim 1, wherein: the expansion connecting sleeve (3) is connected with the precise screw rod (5) in an embedded mode.

5. The direct-drive lead screw structure of the powder press as claimed in claim 1, wherein: the expansion connecting sleeve (3) is in threaded connection with the inside of the torque motor (1) through screws.

6. The direct-drive lead screw structure of the powder press as claimed in claim 1, wherein: the motor driving center (16) is connected with the shell cover (9) in an embedded mode.