Servo motor screw direct drive system

Abstract

The invention relates to the technical field of screw direct drive, in particular to a servo motor screw direct drive system which comprises a platform, a motor stator is fixedly mounted at the top of the platform, a motor rotor is arranged on the inner side of the motor stator, a screw is arranged at the top of the motor rotor, and a nut is arranged at the lower end of the outer surface of the screw. The screw is perpendicular to the inner side of the motor stator, and the right end of the motor stator is connected with a servo controller through a wire. Under the action of the platform, the motor stator, the screw rod, the motor rotor and the nut, the direct-drive system has the advantages of reducing energy consumption and improving precision, and the problems that an existing pneumatic pressure system or hydraulic system needs to be subjected to multiple times of energy conversion in the lifting or push-pull process, energy consumption is large, and cost is low are solved. And the use precision is poor.

Description

Technical Field

[0001] The present invention relates to the technical field of screw direct drive, in particular to a servo motor screw direct drive system. Background Art

[0002] Pneumatic pressure system and hydraulic system are two common power transmission systems, which are widely used in industrial automation and mechanical equipment. The hydraulic system mainly transfers energy through fluids and uses hydraulic oil as the transmission medium. The hydraulic pump in the system converts mechanical energy into liquid energy, and through the control elements such as regulating valves, hydraulic cylinders, and hydraulic motors, the mechanical system can perform various actions. The hydraulic system has the characteristics of high pressure, high power, high reliability, and high precision, and is widely used in heavy industry, metallurgy, shipbuilding, aviation and other fields. The pneumatic system mainly transfers energy through compressed air. The compressor in the system converts mechanical energy into compressed air, and through the control elements such as cylinders and solenoid valves, the mechanical system can perform various actions. The pneumatic system has the characteristics of fast transmission speed and low energy cost, and is widely used in light industry, packaging machinery, automation and other fields. At present, the existing pneumatic pressure system or hydraulic system needs to undergo multiple energy conversions during the lifting or pushing and pulling process, resulting in high energy consumption and poor accuracy. For this reason, we propose a servo motor screw direct drive system. Summary of the invention

[0003] The purpose of the present invention is to provide a servo motor screw direct drive system, which has the advantages of reducing energy consumption and improving precision, and solves the problem that the existing pneumatic pressure system or hydraulic system needs to undergo multiple energy conversions during the lifting or pushing and pulling process, resulting in high energy consumption and poor accuracy.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a servo motor screw direct drive system, comprising a platform, a motor stator is fixedly installed on the top of the platform, a motor rotor is arranged on the inner side of the motor stator, a screw is arranged on the top of the motor rotor, and a nut is arranged at the lower end of the outer surface of the screw.

[0005] Preferably, the screw is perpendicular to the inner side of the motor stator.

[0006] Preferably, the right end of the motor stator is connected to a servo controller via a wire.

[0007] Preferably, a plurality of heat dissipation fins are provided on the outer surface of the motor stator.

[0008] Preferably, a dust ring is fixedly connected to the top of the motor rotor.

[0009] Preferably, the outer surface of the dustproof ring is fixedly connected to a plurality of equidistantly distributed connecting rods, a movable cavity is provided on the inner surface of the end of the connecting rod away from the dustproof ring, a rotating block is movably connected to the inner side of the movable cavity, a blower blade is fixedly connected to the side of the rotating block away from the connecting rod, guide pins are fixedly connected to the upper and lower ends of the blower blade close to the connecting rod, and flip rail grooves matching the guide pins are symmetrically provided at the upper and lower ends of the connecting rod away from the dustproof ring and centered on the movable cavity.

[0010] Preferably, the flip rail groove is an arc-shaped structure, and the guide pin rod slides on the inner side of the flip rail groove.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can install the direct drive system at the use position through the setting of the platform. Through the setting of the motor stator and the screw as well as the motor rotor and the nut, under the action of electricity, the motor rotor and the nut make circular motion. Since one end of the screw is fixed, the nut moves up and down along the thread perpendicular to the center of the motor, thereby generating thrust or pulling force. Compared with the pneumatic pressure system and the hydraulic system, the combination of electric power with the screw and the nut is used to directly generate thrust or pulling force along the central axis of the motor, which can reduce energy consumption and improve accuracy.

[0012] 2. The present invention can increase the heat dissipation area on the outside of the motor stator by setting the heat dissipation fins when the direct drive system is working, thereby improving the heat dissipation efficiency of the motor stator and the motor stator when the motor stator is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the first state of the present invention; Figure 2 It is a schematic diagram of the structure of the second state of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the explosion structure; Figure 4 It is a schematic diagram of the matching structure of the blast blade and the connecting rod of the present invention.

[0014] In the figure: 1. screw; 2. nut; 3. motor rotor; 4. motor stator; 5. platform; 6. servo controller; 7. blower blades; 8. cooling fins; 9. connecting rod; 10. dustproof ring; 11. guide pin rod; 12. flip rail groove; 13. movable cavity; 14. rotating block. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] The screw 1, nut 2, motor rotor 3, motor stator 4, platform 5, servo controller 6, blower blades 7, heat dissipation fins 8, connecting rod 9, dust ring 10, guide pin rod 11, flip rail groove 12, movable cavity 13 and rotating block 14 components of the present application are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. Embodiment 1

[0019] See also Figure 1-Figure 4 As shown, the present invention provides a technical solution: a servo motor screw direct drive system, including a platform 5, a motor stator 4 is fixedly installed on the top of the platform 5, a motor rotor 3 is arranged on the inner side of the motor stator 4, a screw 1 is arranged on the top of the motor rotor 3, the screw 1 is perpendicular to the inner side of the motor stator 4, a nut 2 is arranged at the lower end of the outer surface of the screw 1, and the right end of the motor stator 4 is connected to a servo controller 6 through a wire.

[0020] This technical solution: Through the setting of the platform 5, the direct drive system can be installed in the use position. Through the setting of the motor stator 4 and the screw 1 as well as the motor rotor 3 and the nut 2, under the action of electricity, the motor rotor 3 and the nut 2 make circular motions. Since one end of the screw 1 is fixed, the nut 2 moves up and down along the thread perpendicular to the center of the motor, thereby generating thrust or pulling force. Compared with the pneumatic pressure system and the hydraulic system, the combination of electric power with the screw 1 and the nut 2 is used to directly generate thrust or pulling force along the central axis of the motor, which can reduce energy consumption and improve accuracy, and meet the national 2025 manufacturing requirements. Due to the high control accuracy of the servo drive, it can be measured to reach 0.5%. The use of pneumatic pressure systems and hydraulic systems is generally between 10% and 20%, and the pressure system requires an air supply system to provide power, and the actual use of the unit of gas source impurities and water content is relatively high, and the accuracy is poor. Compared with general pneumatic or hydraulic systems, the use of this direct drive system can save costs, is more environmentally friendly, and does not require secondary energy conversion. The maintenance cost of the hydraulic system is also high. Through the setting of the servo controller 6, the switching work of the positive and negative input of the current can be controlled. Due to the forward and reverse rotation of the motor rotor 3 and the nut 2, the screw 1 is caused to move up and down, so that the screw 1 is used as a directional motion subject, which is convenient for the user to control the lifting and lowering motion of the drive system. Embodiment 2

[0021] Based on the first embodiment, the present invention is as follows Figure 1-Figure 4 As shown, it is disclosed that a plurality of heat dissipation fins 8 are provided on the outer surface of the motor stator 4 .

[0022] This technical solution: by setting the heat dissipation fins 8, when the direct drive system is working, the heat dissipation area can be increased on the outside of the motor stator 4, thereby improving the heat dissipation efficiency of the motor stator 4 when the motor stator 4 is working. Embodiment 3

[0023] Based on the first embodiment, the present invention is as follows Figure 1-Figure 4 As shown, a dust ring 10 is fixedly connected to the top of the motor rotor 3.

[0024] The technical solution of the present invention is that by setting the dustproof ring 10, the matching clearance between the motor rotor 3 and the motor stator 4 can be shielded when the direct drive system is in use or not in use, thereby preventing the entry and accumulation of external dust and ensuring the normal operation of the direct drive system. Embodiment 4

[0025] Based on the first embodiment, the present invention is as follows Figure 1-Figure 4As shown, a plurality of equidistantly distributed connecting rods 9 are fixedly connected to the outer surface of the dustproof ring 10, a movable cavity 13 is provided on the inner surface of the end of the connecting rod 9 away from the dustproof ring 10, a rotating block 14 is movably connected to the inner side of the movable cavity 13, a blower blade 7 is fixedly connected to the side of the rotating block 14 away from the connecting rod 9, and a guide pin 11 is fixedly connected to the upper and lower ends of the blower blade 7 on the side close to the connecting rod 9, and a flip rail groove 12 adapted to the guide pin 11 is symmetrically provided at the upper and lower ends of the side of the connecting rod 9 away from the dustproof ring 10 and symmetrically with the movable cavity 13 as the center, and the flip rail groove 12 is an arc structure, and the guide pin 11 slides on the inner side of the flip rail groove 12.

[0026] The technical solution is as follows: through the setting of the connecting rod 9, the guide pin rod 11, the flip rail groove 12, the active cavity 13, the rotating block 14 and the blast blade 7 (the fixed connection point between the blast blade 7 and the rotating block 14 is located at the upper end of one side of the blast blade 7). When the dust ring 10 rotates, affected by the wind resistance in the rotation direction, the blast blade 7 can drive the rotating block 14 to adjust the rotation angle in the active cavity 13, and with the assistance of the guide pin rod 11 sliding on the flip rail groove 12, the blast blade 7 with adjusted angle can be limited in the tilt direction, and no matter whether the screw 1 is rotating forward or reverse, when the blast blade 7 after being limited and tilted follows the dust ring 10 to rotate, it can encourage external gas to blow toward the heat dissipation fin 8, thereby improving the heat dissipation efficiency of the heat dissipation fin 8 and ensuring the normal operation of the direct drive system.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A servo motor screw direct drive system, comprising a platform (5), characterized in that: A motor stator (4) is fixedly mounted on the top of the platform (5), a motor rotor (3) is arranged on the inner side of the motor stator (4), a screw rod (1) is arranged on the top of the motor rotor (3), and a nut (2) is arranged at the lower end of the outer surface of the screw rod (1).

2. The servo motor screw direct drive system according to claim 1, characterized in that: The screw (1) is perpendicular to the inner side of the motor stator (4).

3. The servo motor screw direct drive system according to claim 1, characterized in that: The right end of the motor stator (4) is connected to a servo controller (6) via a wire.

4. The servo motor screw direct drive system according to claim 1, characterized in that: The outer surface of the motor stator (4) is provided with a plurality of heat dissipation fins (8).

5. The servo motor screw direct drive system according to claim 1, characterized in that: A dustproof ring (10) is fixedly connected to the top of the motor rotor (3).

6. The servo motor screw direct drive system according to claim 5, characterized in that: The outer surface of the dustproof ring (10) is fixedly connected to a plurality of equidistantly distributed connecting rods (9); an inner surface of an end of the connecting rod (9) away from the dustproof ring (10) is provided with an active cavity (13); a rotating block (14) is movably connected to the inner side of the active cavity (13); a side of the rotating block (14) away from the connecting rod (9) is fixedly connected to a blast blade (7); upper and lower ends of a side of the blast blade (7) close to the connecting rod (9) are fixedly connected to guide pins (11); and upper and lower ends of a side of the connecting rod (9) away from the dustproof ring (10) are symmetrically provided with flip rail grooves (12) adapted to the guide pins (11) with the active cavity (13) as the center.

7. The servo motor screw direct drive system according to claim 6, characterized in that: The flip rail groove (12) is an arc-shaped structure, and the guide pin rod (11) slides on the inner side of the flip rail groove (12).

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