A high torque stepper motor

Abstract

The utility model relates to high torque stepping motor technical field discloses a high torque stepping motor, including motor casing, the front end of motor casing is provided with sealed clamping groove, the surface of motor casing is provided with heat dissipation structure, the trailing edge fixedly connected with junction box is followed to the surface of motor casing, the inner wall fixedly connected with bearing support of motor casing, the rear end of motor casing is connected with rear cover, the front end of motor casing is connected with front cover, the centre of front cover outer surface is fixedly connected with sealed bearing. In the utility model, through heat dissipation structure and heat dissipation stator subassembly, the outer surface of motor casing is equipped with through heat dissipation ring groove and heat dissipation fin, and the inside of stator outer wall through winding frame is equipped with heat dissipation through slot, heat dissipation channel and heat dissipation capillary, effectively improve the heat dissipation efficiency of coil, prevent high torque stepping motor overheat damage, prolong its life.

Description

Technical Field

[0001] This utility model relates to the field of high-torque stepper motor technology, and in particular to a high-torque stepper motor. Background Technology

[0002] A high-torque stepper motor is a type of stepper motor designed for high torque output. It's an electric motor that converts electrical pulse signals into angular or linear displacement. Each input pulse causes the rotor to rotate by an angle or move forward one step. The output angular or linear displacement is proportional to the number of input pulses, and the rotational speed is proportional to the pulse frequency. High-torque stepper motors are commonly used in applications requiring high torque output, such as robotic arms, medical scanners, 3D printers, and CNC machines. These devices demand that the motor provide sufficient force to drive the load or perform precise operations. For example, in robotic arms, high-torque stepper motors ensure stable operation under various workloads; in medical scanners, they ensure the stability and accuracy of the scanning device; and in 3D printers and CNC machines, they provide enough force to drive the print head or cutting tool, ensuring high-quality output. High-torque stepper motors are typically designed with robust magnets and steel coils, which allows them to maintain stable output under high loads.

[0003] While existing high-torque stepper motors can maintain stable output under high loads, they are prone to damage due to coil overheating during use, affecting their service life and efficiency, and making them inconvenient to use. Therefore, a high-torque stepper motor is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-torque stepper motor, which aims to solve the problem that in the prior art, the coil is prone to overheating and damage during use, affecting its service life and efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-torque stepper motor, comprising a motor housing, a sealing groove provided at the front end of the motor housing, a heat dissipation structure provided on the surface of the motor housing, a junction box fixedly connected to the rear edge of the upper surface of the motor housing, a bearing bracket fixedly connected to the inner wall of the motor housing, a rear cover fitted to the rear end of the motor housing, a front cover movably snapped to the front end of the motor housing, a sealed bearing fixedly connected at the center of the outer surface of the front cover, an output shaft movably connected between the sealed bearing and the bearing bracket, a magnetic rotor fixedly connected to the outer wall of the output shaft, a heat dissipation impeller fixedly connected to the rear end of the output shaft, and a heat dissipation stator assembly provided between the interior of the motor housing and the outer periphery of the magnetic rotor.

[0006] As a further description of the above technical solution: The heat dissipation structure includes a heat dissipation ring groove and heat dissipation fins. The heat dissipation ring groove is located on the inner wall of the motor housing, and the heat dissipation fins are fixedly connected to the outer surface of the motor housing.

[0007] As a further description of the above technical solution: The heat dissipation fins are arranged in a ring, and the interior of the multiple heat dissipation fins are connected through the interior of the heat dissipation ring groove.

[0008] As a further description of the above technical solution: The heat dissipation stator assembly includes a stator, the outer wall of which is attached to the inner wall of the motor housing, a winding frame is fixedly connected to the inner wall of the stator, a coil is wound around the outer periphery of the winding frame, a heat dissipation groove is formed on the outer wall of the stator, and a heat dissipation channel is formed through the bottom end of the inner wall of the heat dissipation groove and the interior of the winding frame.

[0009] As a further description of the above technical solution: The winding frame and heat dissipation channel are arranged in a ring, and the winding frame and heat dissipation channel are arranged in a one-to-one correspondence.

[0010] As a further description of the above technical solution: The inner wall of the heat dissipation channel is provided with heat dissipation capillaries on both sides.

[0011] As a further description of the above technical solution: The motor housing, rear cover, and front cover are connected by threaded bolts.

[0012] As a further description of the above technical solution: A heat dissipation mesh is fixedly connected to the outer surface of the rear cover.

[0013] This utility model has the following beneficial effects: 1. In this utility model, through the heat dissipation structure and heat dissipation stator assembly, the outer surface of the motor housing is provided with a through heat dissipation ring groove and heat dissipation fins, and the outer wall of the stator is provided with a heat dissipation groove, heat dissipation channel and heat dissipation capillary tube through the winding frame, which effectively improves the heat dissipation efficiency of the coil, prevents the high torque stepper motor from overheating and being damaged, and extends its service life.

[0014] 2. In this utility model, the motor housing, rear cover, front cover, and connecting bolts are used to connect the motor housing, rear cover, and front cover with threads, making the assembly and installation of these components more convenient. This not only simplifies the assembly and processing of the high-torque stepper motor, but also facilitates future maintenance and repair work. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a high-torque stepper motor proposed in this utility model. Figure 2 This is a schematic diagram of the overall cross-sectional internal structure of a high-torque stepper motor proposed in this utility model. Figure 3 This is a schematic diagram of the overall exploded disassembly structure of a high-torque stepper motor proposed in this utility model; Figure 4 This is a cross-sectional view of the heat dissipation stator assembly of a high-torque stepper motor proposed in this utility model.

[0016] Legend: 1. Motor housing; 2. Sealing slot; 3. Heat dissipation structure; 31. Heat dissipation ring groove; 32. Heat dissipation fins; 4. Junction box; 5. Rear cover; 6. Heat dissipation mesh; 7. Front cover; 8. Connecting bolts; 9. Sealed bearing; 10. Bearing bracket; 11. Output shaft; 12. Magnetic rotor; 13. Heat dissipation impeller; 14. Heat dissipation stator assembly; 141. Stator; 142. Winding frame; 143. Coil; 144. Heat dissipation through groove; 145. Heat dissipation channel; 146. Heat dissipation capillary tube. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1-3 This utility model provides an embodiment of a high-torque stepper motor, including a motor housing 1. The front end of the motor housing 1 is provided with a sealing groove 2 for sealing and pressing a front cover 7. A junction box 4 for motor control is fixedly connected to the rear edge of the upper surface of the motor housing 1. A rear cover 5 is attached to the rear end of the motor housing 1. The front end of the motor housing 1 is movably snapped with the front cover 7. A sealing block is provided at the connecting end of the front cover 7. The motor housing 1, the rear cover 5, and the front cover 7 are connected by threaded bolts 8, which facilitates the assembly and installation of the motor housing 1, the rear cover 5, and the front cover 7, thereby facilitating the assembly, processing, and subsequent maintenance of the high-torque stepper motor.

[0019] Reference Figures 2-4A heat dissipation mesh 6 for heat dissipation inside the motor housing 1 is fixedly connected to the outer surface of the rear cover 5. A heat dissipation structure 3 is provided on the surface of the motor housing 1. The heat dissipation structure 3 includes a heat dissipation ring groove 31 and heat dissipation fins 32. The heat dissipation ring groove 31 is located on the inner wall of the motor housing 1. The heat dissipation fins 32 are fixedly connected to the outer surface of the motor housing 1. Multiple heat dissipation fins 32 are arranged in a ring, and the interior of the multiple heat dissipation fins 32 is connected to the interior of the heat dissipation ring groove 31. A bearing bracket 10 is fixedly connected to the inner wall of the motor housing 1. A sealed bearing 9 is fixedly connected to the center of the outer surface of the front cover 7. An output shaft 11 is movably connected between the sealed bearing 9 and the bearing bracket 10. A magnetic rotor 12 is fixedly connected to the outer wall of the output shaft 11. A heat dissipation impeller 13 for synchronous rotation and exhaust heat dissipation is fixedly connected to the rear end of the output shaft 11. A heat dissipation stator assembly 14 is provided between the interior of the motor housing 1 and the outer periphery of the magnetic rotor 12. The heat dissipation stator assembly 14 includes a stator 141. The outer wall of the stator 141 is attached to the inner wall of the motor housing 1. A winding frame 142 is fixedly connected to the inner wall of the stator 141. A coil 143 is wound around the outer circumference of the winding frame 142. A heat dissipation groove 144 is formed on the outer wall of the stator 141. Multiple winding frames 142 and heat dissipation grooves 144 are arranged in a ring, and the multiple winding frames 142 and heat dissipation grooves 144 are arranged in a one-to-one correspondence. A heat dissipation channel 1 is formed at the bottom end of the inner wall of the heat dissipation groove 144, penetrating the interior of the winding frame 142. 45. Heat dissipation capillary tubes 146 are provided on both sides of the inner wall of the heat dissipation channel 145. Through the heat dissipation structure 3 and the heat dissipation stator assembly 14, the heat dissipation fins 32 that penetrate the heat dissipation annular groove 31 on the outer surface of the motor housing 1, combined with the heat dissipation through groove 144, heat dissipation channel 145 and heat dissipation capillary tubes 146 provided on the outer wall of the stator 141 that penetrate the winding frame 142, facilitate efficient heat dissipation of the coil 143, thereby avoiding overheating damage of the high torque stepper motor and improving its service life.

[0020] Working principle: During the assembly process, one end of the output shaft 11, on which the magnetic rotor 12 is installed, passes through the inside of the bearing bracket 10 and a heat dissipation impeller 13 is fixedly installed. The heat dissipation stator assembly 14 is assembled inside the motor housing 1, and the motor housing 1, the rear cover 5, and the front cover 7 are threaded together by connecting bolts 8 to achieve their assembly and installation. During use, the outer surface of the motor housing 1 is provided with heat dissipation fins 32 that penetrate the heat dissipation annular groove 31. Combined with the heat dissipation through grooves 144, heat dissipation channels 145, and heat dissipation capillaries 146 that penetrate the winding frame 142 on the outer wall of the stator 141, it helps to efficiently dissipate heat from the coil 143, thereby avoiding overheating damage to the high-torque stepper motor and extending its service life.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-torque stepper motor, comprising a motor housing (1), characterized in that: The front end of the motor housing (1) is provided with a sealing slot (2), the surface of the motor housing (1) is provided with a heat dissipation structure (3), the rear edge of the upper surface of the motor housing (1) is fixedly connected with a junction box (4), the inner wall of the motor housing (1) is fixedly connected with a bearing bracket (10), the rear end of the motor housing (1) is fitted with a rear cover (5), the front end of the motor housing (1) is movably snapped with a front cover (7), the center of the outer surface of the front cover (7) is fixedly connected with a sealing bearing (9), the inside of the sealing bearing (9) and the bearing bracket (10) is movably connected with an output shaft (11), the outer wall of the output shaft (11) is fixedly connected with a magnetic rotor (12), the rear end of the output shaft (11) is fixedly connected with a heat dissipation impeller (13), and a heat dissipation stator assembly (14) is provided between the inside of the motor housing (1) and the outer periphery of the magnetic rotor (12).

2. The high-torque stepper motor according to claim 1, characterized in that: The heat dissipation structure (3) includes a heat dissipation ring groove (31) and heat dissipation fins (32). The heat dissipation ring groove (31) is located on the inner wall of the motor housing (1), and the heat dissipation fins (32) are fixedly connected to the outer surface of the motor housing (1).

3. A high-torque stepper motor according to claim 2, characterized in that: The heat dissipation fins (32) are arranged in a ring, and the interior of the multiple heat dissipation fins (32) is connected to the interior of the heat dissipation ring groove (31).

4. A high-torque stepper motor according to claim 1, characterized in that: The heat dissipation stator assembly (14) includes a stator (141), the outer wall of the stator (141) is attached to the inner wall of the motor housing (1), a winding frame (142) is fixedly connected to the inner wall of the stator (141), a coil (143) is wound around the outer periphery of the winding frame (142), a heat dissipation groove (144) is opened on the outer wall of the stator (141), and a heat dissipation channel (145) is opened through the bottom end of the inner wall of the heat dissipation groove (144) through the interior of the winding frame (142).

5. A high-torque stepper motor according to claim 4, characterized in that: The winding frame (142) and heat dissipation channel (144) are arranged in a ring, and the multiple winding frames (142) and heat dissipation channels (144) are arranged in a one-to-one correspondence.

6. A high-torque stepper motor according to claim 4, characterized in that: Heat dissipation capillaries (146) are provided on both sides of the inner wall of the heat dissipation channel (145).

7. A high-torque stepper motor according to claim 1, characterized in that: The motor housing (1), rear cover (5), and front cover (7) are connected by connecting bolts (8).

8. A high-torque stepper motor according to claim 1, characterized in that: A heat dissipation mesh (6) is fixedly connected to the outer surface of the rear cover (5).

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