Fine processing equipment for motor shell

Abstract

The utility model relates to the technical field of motor shell processing equipment, in particular to precision processing equipment for a motor shell, which comprises a precision processing equipment main body and a self-adaptive clamping component, and the self-adaptive clamping component comprises a turntable and a rotary drum coaxially and fixedly connected to the turntable; a toggle joint assembly is arranged in the rotary drum; the driving motor is in transmission connection with the two-way screw through an electromagnetic clutch, the two-way screw is rotationally connected with the driving end of the toggle assembly, and the output end of the toggle assembly is connected with the arc-shaped plate; a pressure sensor is arranged at the connecting position of the driving end and the arc-shaped plate and electrically connected with the control unit, when the clamping force measured by the pressure sensor reaches a threshold value, the electromagnetic clutch disconnects power transmission, meanwhile, the electromagnet is powered on to adsorb the friction plate, and the driving rod and the rotating disc rotate synchronously. The two-way screw drives the toggle assembly, and the arc-shaped plate expands in the radial direction to adapt to motor shells with different inner diameters.

Description

Technical Field

[0001] This utility model relates to the technical field of motor housing processing equipment, specifically a fine processing equipment for motor housings. Background Technology

[0002] The fine processing equipment for motor housings is mainly used to refine the surface of motor housings after basic processing (such as casting, stamping, welding, etc.) is completed, in order to improve appearance quality, corrosion resistance, wear resistance, or functionality. Commonly used motor housing finishing equipment includes sandblasting equipment, polishing equipment, and spraying equipment. To improve work efficiency, reduce the workload of operators, and improve the uniformity of motor housing finishing, existing motor housing finishing processes use clamps to hold and fix the motor housing to be processed and rotate it. For example, Chinese utility model patent CN221911153U, filed on December 15, 2023, describes a technical solution where the motor housing is positioned and clamped on the upper end face of a rotating support bearing connected to the drive motor. A cylinder drives a rotating pressure plate to descend, and the slots on the rotating pressure plate engage with the inner wall of the upper end of the motor housing. The clamping and fixing of the motor housing to be finished is achieved through the squeezing of the motor housing by the rotating pressure plate and the engagement and adaptation of the slots with the inner wall of the motor housing. The rotation of the rotating support bearing is then driven by the drive motor, which in turn drives the rotation of the motor housing to be finished.

[0003] However, the technical solutions provided by the aforementioned patents are not adaptable enough to motor housings, and the slot design on the rotating pressure plate is difficult to be compatible with motor housings of different inner wall diameters. Utility Model Content

[0004] The purpose of this invention is to provide a fine processing device for a motor housing with an adaptive clamping device, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fine treatment device for motor housing includes a fine treatment device body and an adaptive clamping assembly for positioning and clamping the motor housing to be finely treated. The adaptive clamping assembly includes a turntable and a rotating cylinder coaxially fixedly connected to the turntable.

[0007] The rotating drum is internally equipped with toggle assemblies, and there are two sets of toggle assemblies. The two sets of toggle assemblies are symmetrical about the rotating drum. Each set of toggle assemblies includes at least two toggle mechanisms. Each toggle mechanism includes an axially arranged drive end and a radially arranged output end. The output end is slidably connected to a radially arranged slide rail and is fixedly connected to an arc-shaped plate after passing through the side wall of the rotating drum along the slide rail. The drive ends of the two sets of toggle mechanisms are respectively threaded to different helix sections of a bidirectional screw.

[0008] One end of the bidirectional screw is rotatably connected to the end face of the rotating drum, and the other end is connected to the drive rod via an electromagnetic clutch. The other end of the drive rod passes through the turntable and is connected to the output end of the drive motor. The drive rod is rotatably connected to the turntable.

[0009] A friction plate is slidably mounted on the drive rod, and an electromagnet corresponding to the friction plate is provided on the end face of the turntable.

[0010] A pressure sensor is provided at the connection between the drive end and the arc plate. The pressure sensor is electrically connected to the control unit. When the clamping force measured by the pressure sensor reaches a threshold, the electromagnetic clutch disconnects the power transmission, and at the same time, the electromagnet is energized to attract the friction plate, so that the drive rod and the turntable rotate synchronously.

[0011] Preferably, the bidirectional screw is provided with a limiting block, which limits the axial movement range of the drive end.

[0012] Preferably, the limiting block restricts the angle between the connecting rod of the toggle mechanism and the bidirectional screw to a range of 30 to 60 degrees.

[0013] Preferably, the arc-shaped plate is provided with a rubber layer.

[0014] Preferably, a fixing block is also fixed on the drive rod, and a tension spring is provided between the fixing block and the friction plate.

[0015] Preferably, each set of the toggle assembly includes two sets of toggle mechanisms, and the two sets of toggle mechanisms are arranged perpendicular to each other.

[0016] Preferably, a support block is provided near the end of the screw, the support block is rotatably connected to the bidirectional screw, and the support block is fixedly connected to the inner wall of the rotating drum by a support rod.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The toggle assembly is driven by a bidirectional screw, and the arc plate expands radially to adapt to motor housings with different inner diameters;

[0019] 2. The pressure sensor monitors the clamping force in real time. When the threshold is reached, the power supply to the battery clutch is cut off to avoid overload and deformation of the outer shell. At the same time, the circuit of the electromagnet at the turntable is connected. The electromagnet attracts the friction plate to fit tightly against the end face of the turntable, so that the turntable rotates. The arc plate that has been clamped and positioned drives the motor shell to rotate, so as to realize the closed-loop control of the clamping, positioning and rotation of the motor shell in conjunction with the main body of the fine processing equipment for fine processing. Attached Figure Description

[0020] Figure 1 A schematic diagram of the adaptive clamping device after positioning and clamping the motor housing in this utility model;

[0021] Figure 2 This utility model Figure 1 The front view after removing the workbench surface;

[0022] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This utility model presents a schematic diagram of the structure of a planer motor housing and a rotating drum after planing.

[0024] Figure 5 This utility model Figure 4 Enlarged view at point B in the middle;

[0025] Figure 6 A schematic diagram of the structure of the elbow joint assembly of this utility model.

[0026] In the diagram: 1. Turntable; 2. Rotary drum; 3. Worktable surface; 4. Toggle mechanism; 41. Drive end; 42. Output end; 43. Connecting rod; 44. Slide rail; 5. Arc plate; 6. Bidirectional screw; 7. Electromagnetic clutch; 8. Drive rod; 9. Drive motor; 10. Friction plate; 11. Fixing block; 12. Tension spring; 13. Limiting block; 14. Support block; 15. Support rod. Detailed Implementation

[0027] 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.

[0028] This utility model provides a technical solution:

[0029] See Figure 1A fine treatment device for motor housing includes a fine treatment device body, which is a sandblasting device body, including nozzles and control components for controlling the movement of the nozzles. For the positional and connection relationships between the various components in the sandblasting device body, please refer to Chinese Utility Model Patent No. CN221911153U (in this application, only the worktable 3 part of the polishing treatment device body is shown, and polishing components and other parts are not shown). Of course, the fine treatment device body can also be a sandblasting device body or a spraying device body. The specific structure of the fine treatment device body in this application is not the innovation point of this utility model. Existing technical solutions can be adopted. It also includes an adaptive clamping component for positioning and clamping the motor housing to be finely treated. The adaptive clamping component includes a turntable 1 and a rotating cylinder 2 coaxially fixedly connected to the turntable 1. The turntable 1 is rotatably connected to the worktable 3.

[0030] See Figure 4 , Figure 5 and Figure 6 The rotating drum 2 is equipped with toggle assemblies. There are two sets of toggle assemblies, and the two sets of toggle assemblies are symmetrical about the rotating drum 2. Each set of toggle assemblies includes at least two sets of toggle mechanisms 4. The toggle mechanism 4 includes an axially arranged drive end 41 and a radially arranged output end 42. It also includes a connecting rod 43 connecting the output end 42 and the drive end 41. The output end 42 is slidably connected to a radially arranged slide rail 44 and is fixedly connected to an arc plate 5 after passing through the side wall of the rotating drum 2 along the slide rail 44. The drive ends 41 of the two sets of toggle mechanisms 4 are respectively threaded to different helix sections of a bidirectional screw 6. The only difference between the two sections of threads on the screw is that they are in opposite directions.

[0031] One end of the bidirectional screw 6 is rotatably connected to the end face of the rotating drum 2, and the other end is connected to the drive rod 8 through the electromagnetic clutch 7. The electromagnetic clutch 7 is normally closed. The other end of the drive rod 8 passes through the turntable 1 and is connected to the output end 42 of the drive motor 9. The drive rod 8 is rotatably connected to the turntable 1.

[0032] The toggle mechanism 4 is a commonly used structure in mechanical practice and is existing knowledge. In this application, the drive end 41 of the toggle mechanism 4 is an annular block threadedly connected to the bidirectional screw 6, and the output end 42 is a long strip slider slidably connected to the slide rail 44. The electromagnetic clutch 7 controls the power transmission between the screw and the drive rod 8 through electromagnetic force. The electromagnetic clutch is a commonly used component in machine tools, automobiles and other fields. The appropriate choice can be a friction type or a magnetic powder type electromagnetic clutch, or a pressure-embedded, eddy current or hysteresis electromagnetic clutch, depending on the actual situation.

[0033] See Figure 2 and Figure 3A friction plate 10 is slidably mounted on the drive rod 8. The friction plate 10 and the drive rod 8 are slidably connected through a sliding groove slider assembly, which ensures the transmission of torque. An electromagnet corresponding to the friction plate 10 is provided on the end face of the turntable 1. The friction plate 10 and the electromagnet constitute a friction electromagnetic clutch 7, thereby controlling the power transmission between the drive rod 8 and the turntable 1.

[0034] A pressure sensor is provided at the connection between the drive end 41 and the arc plate 5. The pressure sensor is used to measure the pressure (i.e., clamping force) generated when the arc plate 5 contacts the inner wall of the motor housing. The pressure sensor can be a Kistler 9311B pressure sensor or an HBM LY41-6 / 350 strain gauge. Of course, there are many models to choose from. This is just an example of two types of pressure sensors. The pressure sensor is electrically connected to the control unit. When the clamping force measured by the pressure sensor reaches the threshold, the electromagnetic clutch 7 disconnects the power transmission. At the same time, the electromagnet is energized to attract the friction plate 10, so that the drive rod 8 and the turntable 1 rotate synchronously.

[0035] See Figure 4 or Figure 5 or Figure 6 The bidirectional screw 6 is provided with a limiting block 13, which limits the axial movement range of the drive end 41.

[0036] The limiting block 13 restricts the angle between the connecting rod 43 of the toggle mechanism 4 and the bidirectional screw 6 to a range of 30 to 60 degrees. Within this range, the axial displacement of the output end 42 of the toggle mechanism 4 can be amplified to 1.8 to 4.2 times the radial displacement of the output end 42, while maintaining a mechanical efficiency of 50% to 80%, thus achieving a balance between displacement amplification and mechanical efficiency.

[0037] The arc plate 5 is provided with a rubber layer, which reduces the damage of the arc plate 5 to the inner wall of the motor housing, and at the same time increases the static friction between the arc plate 5 and the inner wall of the motor housing during rotation, ensuring that the motor housing can rotate under the friction of the arc plate 5.

[0038] See Figure 2 and Figure 3 A fixing block 11 is also fixedly installed on the drive rod 8. A tension spring 12 is provided between the fixing block 11 and the friction plate 10 so that the friction plate 10 can be reset in time after the electromagnet is de-energized.

[0039] Each toggle assembly includes two toggle mechanisms 4, which are arranged perpendicularly to each other.

[0040] See Figure 4 A support block 14 is provided near the end of the screw. The support block 14 is rotatably connected to the bidirectional screw 6. The support block 14 is fixedly connected to the inner wall of the rotating drum 2 by a support rod 15.

[0041] When using this utility model, first test and calibrate the pressure value of the pressure sensor after the motor housing to be finely processed is fully clamped and positioned, and use this pressure value as the threshold for the electromagnetic clutch 7 to operate when the equipment is working normally.

[0042] Clamping stage: The motor housing is placed on the outer wall of the rotating drum 2, the drive motor 9 is started, the drive rod 8 drives the bidirectional screw 6 to rotate through the electromagnetic clutch 7, the two sets of drive ends 41 move towards each other, and the output end 42 is pushed to extend radially through the connecting rod 43, the arc plate 5 contacts the inner wall of the housing, and the pressure sensor monitors the clamping force (i.e. pressure value) in real time and transmits it to the control unit.

[0043] Locking phase: When the clamping force reaches the threshold, the control unit disconnects the power supply to the electromagnetic clutch 7, the bidirectional screw 6 stops rotating, and the clamping force is locked;

[0044] Rotation stage: The control unit controls the electromagnet to be energized and attracts the friction plate 10, so that the drive rod 8 is connected to the turntable 1. The drive motor 9 drives the turntable 1 to rotate through the drive rod 8, and works with the polishing block or spray gun or nozzle to perform fine treatment on the motor housing.

[0045] Release phase: After fine processing is completed, the control unit controls the electromagnet to be de-energized, the tension spring 12 pulls the friction plate 10 to reset, the electromagnetic clutch 7 is energized, the drive screw rotates in the opposite direction to retract the arc plate 5, and the motor housing is removed.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fine treatment device for an electric motor housing, comprising a fine treatment device body, characterized in that, It also includes an adaptive clamping assembly for positioning and clamping the motor housing to be finely processed, the adaptive clamping assembly including a turntable (1) and a rotating cylinder (2) coaxially fixedly connected to the turntable (1). The rotating drum (2) is provided with an elbow assembly inside. There are two sets of elbow assemblies, and the two sets of elbow assemblies are symmetrical about the rotating drum (2). Each set of elbow assemblies includes at least two sets of elbow mechanisms (4). The elbow mechanism (4) includes an axially arranged drive end (41) and a radially arranged output end (42). The output end (42) is slidably connected to a radially arranged slide rail (44) and is fixedly connected to an arc plate (5) after passing through the side wall of the rotating drum (2) along the slide rail (44). The drive ends (41) of the two sets of elbow mechanisms (4) are respectively threaded to different helical sections of a bidirectional screw (6). One end of the bidirectional screw (6) is rotatably connected to the end face of the rotating drum (2), and the other end is connected to the drive rod (8) through the electromagnetic clutch (7). The other end of the drive rod (8) passes through the turntable (1) and is connected to the output end (42) of the drive motor (9). The drive rod (8) is rotatably connected to the turntable (1). A friction plate (10) is slidably mounted on the drive rod (8), and an electromagnet corresponding to the friction plate (10) is provided on the end face of the turntable (1); A pressure sensor is provided at the connection between the drive end (41) and the arc plate (5). The pressure sensor is electrically connected to the control unit. When the clamping force measured by the pressure sensor reaches the threshold, the electromagnetic clutch (7) disconnects the power transmission. At the same time, the electromagnet is energized to attract the friction plate (10), so that the drive rod (8) and the turntable (1) rotate synchronously.

2. The fine treatment equipment for a motor housing according to claim 1, characterized in that, The bidirectional screw (6) is provided with a limiting block (13), which limits the axial movement range of the drive end (41).

3. The fine treatment equipment for a motor housing according to claim 2, characterized in that, The limiting block (13) restricts the angle between the connecting rod (43) of the toggle mechanism (4) and the bidirectional screw (6) to a range of 30 to 60 degrees.

4. The fine treatment equipment for a motor housing according to claim 1, characterized in that, The arc-shaped plate (5) is provided with a rubber layer.

5. The fine treatment equipment for a motor housing according to claim 1, characterized in that, A fixing block (11) is also fixed on the drive rod (8), and a tension spring (12) is provided between the fixing block (11) and the friction plate (10).

6. The fine treatment equipment for a motor housing according to claim 1, characterized in that, Each set of the elbow assembly includes two sets of elbow mechanisms (4), which are arranged perpendicularly to each other.

7. The fine treatment equipment for a motor housing according to claim 1, characterized in that, A support block (14) is provided near the end of the screw. The support block (14) is rotatably connected to the bidirectional screw (6). The support block (14) is fixedly connected to the inner wall of the rotating drum (2) by a support rod (15).

Images