Stepping motor with rapid adjusting mechanism

Abstract

The utility model discloses a stepping motor with a rapid adjusting mechanism, which comprises a stepping motor body and an outer shaft casing body installed on the outer wall of a front end cover of the stepping motor body in a bolting manner, a hollow casing is fixed at the bottom end of the outer shaft casing body, a rectangular hollow groove communicated with the hollow casing is arranged on the lower surface of the outer shaft casing body, and the outer shaft casing body and the hollow casing are connected in a bolting manner. And an inner rotary sleeve is rotationally installed in the outer shaft shell body, a second oil injection hole and a first oil injection hole which can coincide with each other are formed in the outer wall of the inner rotary sleeve and the outer wall of the outer shaft shell body, and a driven shaft is rotationally installed in the hollow shell. According to the utility model, lubrication can be carried out only by simply operating the worm and gear transmission structure, the inner rotary sleeve and other components to align the grease injection port with a lubrication point in the motor, so that the maintenance time and the labor cost are greatly saved; and in the process, it can be ensured that the lubricating grease can be accurately conveyed to the required position in the outer shaft shell body in each operation.

Description

Technical Field

[0001] This utility model relates to the field of stepper motor technology, specifically a stepper motor with a rapid adjustment mechanism. Background Technology

[0002] A stepper motor is an electric motor specifically designed for precise position control. Its structure consists of two main parts: a stator and a rotor. The stator is typically made of magnetic material and contains electromagnetic coils or permanent magnets to generate a magnetic field. The rotor is the rotating part of the motor and can be either permanent magnet or contain electromagnetic coils. Its operating principle is based on the interaction between changes in current and the magnetic field. Different types of stepper motors include permanent magnet stepper motors, single-pole stepper motors, bipole stepper motors, and hybrid stepper motors. Each type achieves precise stepping motion by controlling changes in current. Currently, to protect the end of the stepper motor shaft, an outer housing with the same inner diameter as the shaft is mounted on the front cover. However, once this outer housing is connected to the front cover, the bearings and other moving mechanical parts require periodic lubrication. Therefore, lubrication maintenance of the shaft necessitates disassembling and reassembling the outer housing and front cover. This process requires appropriate disassembly tools, which not only increases maintenance time but also increases the risk of accidental damage to other parts of the stepper motor during maintenance. Utility Model Content

[0003] The purpose of this utility model is to provide a stepper motor with a quick adjustment mechanism. An inner rotating sleeve is rotatably installed inside the outer shaft housing. When the inner rotating sleeve rotates and the second oil injection hole and the first oil injection hole coincide, the operator can inject lubricating grease into the outer shaft housing and the inner rotating sleeve. After maintenance, the inner rotating sleeve is driven to rotate by the worm gear transmission structure and the gear transmission structure, so that the second oil injection hole and the first oil injection hole are misaligned, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a stepper motor with a rapid adjustment mechanism, comprising a stepper motor body and an outer shaft housing body bolted to the outer wall of the front end cover of the stepper motor body. A hollow shell is fixed to the bottom end of the outer shaft housing body. A rectangular hollow groove communicating with the hollow shell is provided on the lower surface of the outer shaft housing body. An inner rotating sleeve is rotatably installed inside the outer shaft housing body. A second oil injection hole and a first oil injection hole that can overlap each other are provided on the outer wall of the inner rotating sleeve and the outer shaft housing body. A driven shaft is rotatably installed inside the hollow shell. A gear transmission structure for driving the inner rotating sleeve to rotate is installed at one end of the surface of the driven shaft. A base plate is fixed to the lower surface of the hollow shell. A worm gear transmission structure for driving the driven shaft to rotate is installed inside the base plate.

[0005] Preferably, both ends of the inner rotating sleeve surface are integrally formed with annular lips, and the inner wall of the outer shaft housing body is provided with annular inner groove for sliding engagement with the annular lips.

[0006] Preferably, the worm gear transmission structure includes a U-shaped seat fixed to one side of the bottom end of the base plate and a vertical shaft rotatably mounted on the bottom end of the base plate. The top end of the vertical shaft extends into the interior of the hollow shell and is powered by the driven shaft through a gear transmission structure.

[0007] Preferably, the worm gear transmission structure further includes a worm rotatably mounted inside the U-shaped seat and a worm wheel fixed to one end of the vertical shaft surface, with the worm wheel and worm meshing with each other.

[0008] Preferably, the gear transmission structure includes a toothed roller fixed to one end of the driven shaft surface, a sector-shaped residual tooth sleeve integrally formed on the lower surface of the inner rotating sleeve, and a right-angle bevel gear transmission component for connecting the vertical shaft and the driven shaft, wherein the toothed roller and the sector-shaped residual tooth sleeve mesh with each other.

[0009] Preferably, the right-angle bevel gear transmission component includes a driving bevel gear fixed to the top of the vertical shaft and a driven bevel gear mounted on one end of the driven shaft surface, wherein the driven bevel gear and the driving bevel gear mesh with each other.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This stepper motor with a quick adjustment mechanism, through the structure of an inner rotating sleeve and a worm gear transmission structure that work together, allows the operator to complete the lubrication operation without disassembling the outer shaft housing and the front cover of the motor. Simply operate the worm gear transmission structure, the inner rotating sleeve, and other components to align the grease inlet with the lubrication point inside the motor, and lubrication can be performed, greatly saving maintenance time and labor costs. Moreover, this process ensures that the lubricating grease is accurately delivered to the required position inside the outer shaft housing in each operation, thereby effectively protecting the bearings, shafts, and other moving parts from wear and excessive friction. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0012] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the present invention. Figure 1 ;

[0014] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the present invention. Figure 2 ;

[0015] Figure 5This is a three-dimensional cross-sectional view of the outer shaft shell of this utility model.

[0016] In the diagram: 1. Stepper motor body; 2. Outer shaft housing body; 201. First oil injection hole; 202. Rectangular hollow groove; 3. Hollow shell; 4. Base plate; 5. U-shaped seat; 6. Vertical shaft; 7. Worm gear transmission structure; 8. Inner rotating sleeve; 801. Fan-shaped residual tooth sleeve; 802. Second oil injection hole; 9. Driven shaft; 10. Gear transmission structure. 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] Please see Figure 1-5 An embodiment of this utility model is provided: a stepper motor with a fast adjustment mechanism, including a stepper motor body 1 and an outer shaft housing body 2 bolted to the outer wall of the front end cover of the stepper motor body 1. A hollow shell 3 is fixed to the bottom end of the outer shaft housing body 2. A rectangular hollow groove 202 communicating with the hollow shell 3 is provided on the lower surface of the outer shaft housing body 2. An inner rotating sleeve 8 is rotatably installed inside the outer shaft housing body 2. A second oil injection hole 802 and a first oil injection hole 201 that can overlap each other are provided on the outer wall of the inner rotating sleeve 8 and the outer shaft housing body 2. A driven shaft 9 is rotatably installed inside the hollow shell 3. A gear transmission structure 10 for driving the inner rotating sleeve 8 to rotate is installed at one end of the surface of the driven shaft 9. A base plate 4 is fixed to the lower surface of the hollow shell 3. A worm gear transmission structure 7 for driving the driven shaft 9 to rotate is installed inside the base plate 4.

[0019] Both ends of the inner rotating sleeve 8 are integrally formed with annular lips, and the inner wall of the outer shaft housing 2 is provided with annular inner groove for sliding cooperation with the annular lips. The rotational stability of the inner rotating sleeve 8 is improved by the annular lips and the annular inner groove.

[0020] The worm gear transmission structure 7 includes a U-shaped seat 5 fixed to one side of the bottom end of the base plate 4 and a vertical shaft 6 rotatably mounted on the bottom end of the base plate 4. The top end of the vertical shaft 6 extends into the interior of the hollow shell 3 and is powered by the driven shaft 9 through the gear transmission structure 10. The worm gear transmission structure 7 also includes a worm rotatably mounted inside the U-shaped seat 5 and a worm wheel fixed to one end of the surface of the vertical shaft 6. The worm wheel and worm mesh with each other. The worm gear transmission structure 7 has a self-locking function, which can ensure the accuracy of the rotation angle and position of the inner rotating sleeve 8, thereby accurately aligning the second oil injection hole 802 and the first oil injection hole 201, and preventing the inner rotating sleeve 8 from rotating on its own.

[0021] The gear transmission structure 10 includes a toothed roller fixed to one end of the surface of the driven shaft 9, a fan-shaped residual tooth sleeve 801 integrally formed on the lower surface of the inner rotating sleeve 8, and a right-angle bevel gear transmission component for connecting the vertical shaft 6 and the driven shaft 9. The toothed roller and the fan-shaped residual tooth sleeve 801 mesh with each other. The rectangular hollow groove 202 provides a space for the deflection of the fan-shaped residual tooth sleeve 801. The right-angle bevel gear transmission component includes a driving bevel gear fixed to the top of the vertical shaft 6 and a driven bevel gear installed on one end of the surface of the driven shaft 9. The driven bevel gear and the driving bevel gear mesh with each other.

[0022] During the operation of the worm gear transmission structure 7, the worm drives the worm wheel and the vertical shaft 6 to rotate in sequence. The top of the vertical shaft 6 drives the driven shaft 9 to rotate through the right bevel gear transmission component in the gear transmission structure 10. At this time, the driven shaft 9 drives the fan-shaped residual tooth sleeve 801 and the inner rotating sleeve 8 to rotate through the tooth roller until the first oil injection hole 201 and the second oil injection hole 802 are misaligned.

[0023] In this embodiment, the operator first manually operates the worm gear transmission structure 7, which actively drives the vertical shaft 6 to rotate. This causes the vertical shaft 6 to rotate via the gear transmission structure 10, driving the driven shaft 9 and the inner rotating sleeve 8 to rotate. The inner rotating sleeve 8 rotates clockwise or counterclockwise by a certain angle, causing the second oil injection hole 802 on the outer circumference of the inner rotating sleeve 8 to coincide with the first oil injection hole 201 on the outer circumference of the outer shaft housing 2. The second oil injection hole 802 and the first oil injection hole 201 are then interconnected. The operator fills the outer shaft housing 2 and the inner rotating sleeve 8 with lubricating grease through the first oil injection hole 201, thus lubricating the shaft of the stepper motor body 1. After lubrication, the operator rotates the vertical shaft 6 in the opposite direction via the worm gear transmission structure 7. The lubricating oil is kept in place until the second oil injection hole 802 and the first oil injection hole 201 are misaligned, and the inner wall surface of the outer shaft housing body 2 is in contact with the outer wall surface of the inner rotating sleeve 8 to prevent lubricating grease from seeping out from the first oil injection hole 201 and the second oil injection hole 802. The inner rotating sleeve 8 is designed inside the outer shaft housing body 2 and utilizes its internal rotation characteristics, so that the operator can complete the lubrication operation without disassembling the outer shaft housing body 2 and the front end cover of the motor. Simply operate the worm gear transmission structure 7, the inner rotating sleeve 8 and other components to align the grease injection port with the lubrication point inside the motor, and lubrication can be performed. This greatly saves maintenance time and labor costs. In addition, this process can ensure that the lubricating grease is accurately delivered to the required position inside the outer shaft housing body 2 in each operation, thereby effectively protecting the bearings, shafts and other moving parts from wear and excessive friction.

Claims

1. A stepper motor with a rapid adjustment mechanism, characterized in that: The device includes a stepper motor body (1) and an outer shaft housing body (2) bolted to the outer wall of the front end cover of the stepper motor body (1). A hollow shell (3) is fixed to the bottom end of the outer shaft housing body (2). A rectangular hollow groove (202) communicating with the hollow shell (3) is provided on the lower surface of the outer shaft housing body (2). An inner rotating sleeve (8) is rotatably installed inside the outer shaft housing body (2), and the inner rotating sleeve (8) and the outer wall of the outer shaft housing body (2) are provided with... There are a second oil injection hole (802) and a first oil injection hole (201) that can overlap with each other. A driven shaft (9) is rotatably installed inside the hollow shell (3). A gear transmission structure (10) for driving the inner rotating sleeve (8) to rotate is installed at one end of the surface of the driven shaft (9). A base plate (4) is fixed on the lower surface of the hollow shell (3), and a worm gear transmission structure (7) for driving the driven shaft (9) to rotate is installed inside the base plate (4).

2. A stepper motor with a rapid adjustment mechanism according to claim 1, characterized in that: Both ends of the inner rotating sleeve (8) are integrally formed with annular lips, and the inner wall of the outer shaft housing (2) is provided with annular inner groove for sliding cooperation with the annular lips.

3. A stepper motor with a rapid adjustment mechanism according to claim 1, characterized in that: The worm gear transmission structure (7) includes a U-shaped seat (5) fixed on one side of the bottom end of the base plate (4) and a vertical shaft (6) rotatably mounted on the bottom end of the base plate (4). The top end of the vertical shaft (6) extends into the interior of the hollow shell (3) and is connected to the driven shaft (9) through a gear transmission structure (10).

4. A stepper motor with a rapid adjustment mechanism according to claim 3, characterized in that: The worm gear transmission structure (7) also includes a worm that is rotatably installed inside the U-shaped seat (5) and a worm wheel that is fixed to one end of the surface of the vertical shaft (6), with the worm wheel and worm meshing with each other.

5. A stepper motor with a rapid adjustment mechanism according to claim 3, characterized in that: The gear transmission structure (10) includes a toothed roller fixed to one end of the surface of the driven shaft (9), a fan-shaped residual tooth sleeve (801) integrally formed on the lower surface of the inner rotating sleeve (8), and a right-angle bevel gear transmission component for connecting the vertical shaft (6) and the driven shaft (9). The toothed roller and the fan-shaped residual tooth sleeve (801) mesh with each other.

6. A stepper motor with a rapid adjustment mechanism according to claim 5, characterized in that: The right-angle bevel gear transmission component includes a driving bevel gear fixed at the top of the vertical shaft (6) and a driven bevel gear installed on one end of the surface of the driven shaft (9). The driven bevel gear and the driving bevel gear mesh with each other.

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