Automatic crankshaft grinding device

Abstract

The utility model relates to the technical field of automatic crankshaft grinding devices, and solves the problems that a grinding structure cannot be replaced in a full-automatic manner so as to adapt to the switching requirement of different grinding meshes, and the intellectualization and automation effects of the whole structure are poor. The automatic crankshaft grinding device comprises a mechanical arm, a mounting disc is fixedly connected to one end of the mechanical arm, a cavity is formed in the mounting disc, a controller is fixedly connected to the interior of the cavity, the controller is electrically connected with the mechanical arm, a connecting rod is fixedly connected to the side face of the mounting disc, and a rotating disc is fixedly connected to the tail end of the connecting rod; three electric push rods are fixedly connected to the side face of the mounting disc in a rectangular array mode, and one ends of the electric push rods penetrate through the through holes of the rotating disc and are fixedly connected with the grinding assemblies. The polishing assembly comprises a driving motor and a mounting cylinder fixedly connected with the output end of the driving motor, a groove is formed in the mounting cylinder, an electromagnet is fixedly connected into the groove, and the electromagnet is connected with a detachable polishing wheel in a magnetic attraction mode.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic crankshaft grinding devices, specifically an automatic crankshaft grinding device. Background Technology

[0002] A crankshaft repair and grinding machine disclosed in CN221755525U includes a fixed groove, a sliding block slidably connected inside the fixed groove, a clamping assembly provided at the upper end of the sliding block, the clamping assembly including a limit bolt, a turntable, a rotating shaft, a crankshaft body and a fixed plate, a rotating rod rotatably connected between the locking plates, and a gripping assembly provided on the surface of the rotating rod, the gripping assembly including a bidirectional bolt, a clamping box, a winding tube, a robotic arm and a robotic claw.

[0003] By incorporating a clamping assembly, a gripping assembly, forward and reverse motors, and a grinding motor, the machine automatically transports crankshafts to the worktable, clamps and fixes them, and grinds them, thus improving processing efficiency. Furthermore, by including a clamping box, a stabilizing plate, a slider outlet pipe, a wastewater tank, and a perforated plate, it eliminates the need for external pipes to cool the grinding area during grinding and allows for wastewater recycling, extending the machine's service life.

[0004] The technical solution in the prior art has the effect of cooling the polished surface without the need for an external water source, but the defects are also more obvious, such as the inability to automatically change the polishing structure to adapt to the needs of switching between different polishing grits, and the overall intelligence and automation of the structure are poor. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic crankshaft grinding device, which solves the problem that the grinding structure cannot be changed automatically to adapt to the needs of switching between different grinding grits, and the overall structure has poor intelligence and automation effects.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic crankshaft grinding device, comprising a robotic arm, one end of which is fixedly connected to a mounting plate, the mounting plate having a cavity inside which a controller is fixedly connected, the controller being electrically connected to the robotic arm, a connecting rod being fixedly connected to the side of the mounting plate and the end of the connecting rod being fixedly connected to a turntable, the turntable having a through hole on its side, and three electric push rods being fixedly connected in a rectangular array on the side of the mounting plate, one end of the electric push rod passing through the through hole of the turntable and being fixedly connected to a grinding component;

[0007] The polishing assembly includes a drive motor and a mounting cylinder fixedly connected to the output end of the drive motor. The mounting cylinder has a groove and an electromagnet is fixedly connected in the groove. The electromagnet is magnetically connected to a detachable polishing wheel.

[0008] In one specific embodiment, the telescopic end of the electric push rod passes through the through hole of the turntable and is fixedly connected to the housing of the drive motor.

[0009] In one specific embodiment, the three electric push rods are connected to grinding wheels with different grit sizes, and the robotic arm controls the rotation via a controller to switch the grinding wheels with different grit sizes to contact the crankshaft.

[0010] In one specific embodiment, the grinding wheel is detachably fixed in the groove of the mounting cylinder by the magnetic attraction of an electromagnet.

[0011] In one specific embodiment, a pressure sensor is provided in the groove of the mounting cylinder, and the pressure sensor is communicatively connected to the controller to detect the installation status of the grinding wheel.

[0012] In one specific embodiment, the three grinding wheels have different grit sizes and extend and retract independently via corresponding electric push rods. The robotic arm drives the turntable to rotate based on controller commands and coordinates the extension and retraction of the electric push rods to switch the grinding wheel with the target grit size to the working position.

[0013] Compared with the prior art, this utility model provides an automatic crankshaft grinding device, which has the following features:

[0014] Beneficial effects:

[0015] In the technical solution disclosed in this utility model, the controller set inside the mounting plate coordinates the linkage action of the robotic arm and three electric push rods. When it is necessary to switch between different grit grinding wheels, the controller drives the robotic arm to rotate the turntable to the corresponding angle of the target grinding wheel. At the same time, the corresponding electric push rod pushes the drive motor and the mounting cylinder forward, so that the grinding wheel protrudes out of the turntable and contacts the crankshaft, thereby realizing the function of fully automatic switching between different grit grinding wheels.

[0016] The present invention utilizes a grinding assembly and electric push rods. A controller is built into the mounting plate at the end of the robotic arm, controlling the rotation angle of the robotic arm and the independent extension / retraction strokes of the three electric push rods via a preset program. When switching between grinding wheels of different grits, the controller drives the robotic arm to rotate the turntable around the connecting rod axis to the angle corresponding to the target grinding wheel. Simultaneously, the electric push rod corresponding to that grinding wheel pushes the drive motor and mounting cylinder to move axially along the through hole, causing the grinding wheel to protrude from the side of the turntable and contact the crankshaft. The other two electric push rods retract synchronously to avoid interference. An electromagnet is embedded in the groove of the mounting cylinder, using the magnetic attraction generated by energization to fix the detachable grinding wheel. A pressure sensor at the bottom of the groove monitors the contact pressure between the grinding wheel and the groove in real time. If an abnormal pressure is detected, feedback is sent to the controller, triggering a shutdown protection mechanism to ensure the installation stability of the grinding wheel during high-speed rotation. During continuous processing, the controller sequentially selects grinding wheels of different grits according to preset rough grinding, semi-fine grinding, and fine grinding processes. Seamless switching between multi-level grinding processes is achieved through the coordinated movement of the rotating turntable of the robotic arm and the corresponding extension / retraction of the electric push rods. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the mounting plate and electric push rod structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the grinding component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0022] In the diagram: 1. Robotic arm; 2. Mounting plate; 3. Controller; 4. Connecting rod; 5. Turntable; 6. Electric push rod; 7. Grinding assembly; 71. Drive motor; 72. Mounting cylinder; 73. Electromagnet; 74. Grinding wheel. Detailed Implementation

[0023] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] Figures 1-4In one embodiment of this utility model, an automatic crankshaft grinding device includes a robotic arm 1. One end of the robotic arm 1 is fixedly connected to a mounting plate 2. The mounting plate 2 has a cavity inside, and a controller 3 is fixedly connected inside the cavity. The controller 3 is electrically connected to the robotic arm 1. A connecting rod 4 is fixedly connected to the side of the mounting plate 2, and the end of the connecting rod 4 is fixedly connected to a turntable 5. The turntable 5 has a through hole on its side. Three electric push rods 6 are fixedly connected to the side of the mounting plate 2 in a rectangular array. One end of the electric push rod 6 passes through the through hole of the turntable 5 and is fixedly connected to a grinding component 7.

[0025] The specific problem addressed in this embodiment is the inability to automatically change the grinding structure to adapt to different grinding grit switching requirements, resulting in poor overall intelligence and automation of the structure. This invention utilizes a controller 3 inside the mounting plate 2 to coordinate the linkage between the robotic arm 1 and three electric push rods 6. When it is necessary to switch to a different grit grinding wheel 74, the controller 3 drives the robotic arm 1 to rotate the turntable 5 to the corresponding angle of the target grinding wheel 74. Simultaneously, the corresponding electric push rod 6 pushes the drive motor 71 and the mounting cylinder 72 forward, causing the grinding wheel 74 to protrude from the turntable 5 and contact the crankshaft, thus achieving the function of fully automatically switching between different grit grinding wheels 74.

[0026] The grinding assembly 7 includes a drive motor 71 and a mounting cylinder 72 fixedly connected to the output end of the drive motor 71. The mounting cylinder 72 has a groove, and an electromagnet 73 is fixedly connected within the groove. The electromagnet 73 magnetically connects to a detachable grinding wheel 74. In this specific embodiment, the telescopic end of the electric push rod 6 passes through the through hole of the turntable 5 and is fixedly connected to the housing of the drive motor 71. The mounting plate 2 at the end of the robotic arm 1 has a built-in controller 3, which controls the rotation angle of the robotic arm 1 and the independent telescopic stroke of the three electric push rods 6 through a preset program. When it is necessary to switch between grinding wheels 74 with different grit sizes, the controller 3 drives the robotic arm 1 to rotate the turntable 5 around the axis of the connecting rod 4 to the angle corresponding to the target grinding wheel 74. Simultaneously, the electric push rod 6 corresponding to the grinding wheel 74 pushes the drive motor 71 and the mounting cylinder 72 to move axially along the through hole, causing the grinding wheel 74 to protrude from the side of the turntable 5 and contact the crankshaft. The other two electric push rods 6 retract synchronously to avoid interference. An electromagnet 73 is embedded in the groove of the mounting cylinder 72. The detachable grinding wheel 74 is fixed by the magnetic attraction generated by energization. A pressure sensor at the bottom of the groove monitors the contact pressure between the grinding wheel 74 and the groove in real time. If an abnormal pressure is detected, it is fed back to the controller 3 and triggers the shutdown protection to ensure the installation stability of the grinding wheel 74 when it rotates at high speed. During continuous processing, the controller 3 sequentially calls grinding wheels 74 with different grits according to the preset rough grinding, semi-fine grinding and fine grinding processes. Through the coordinated action of the rotating turntable 5 of the robotic arm 1 and the extension and retraction of the corresponding electric push rod 6, the seamless switching of multi-level grinding processes is realized.

[0027] In this specific embodiment, the three electric push rods 6 are connected to grinding wheels 74 with different grit numbers. The robotic arm 1 is controlled to rotate by the controller 3 to switch the grinding wheels 74 with different grit numbers to contact the crankshaft.

[0028] When the controller 3 receives the switching command, it drives the robotic arm 1 to rotate the turntable 5 around the connecting rod 4 to the angle corresponding to the target grinding wheel 74. At the same time, the corresponding electric push rod 6 extends to make the grinding wheel 74 contact the crankshaft surface, while the other electric push rods 6 retract to avoid it. The beneficial effect is that the controller 3 and the robotic arm 1 can achieve fully automatic switching of grinding wheels 74 with different grits through coordinated control, avoiding the tedious operation of manually changing tools, significantly improving the efficiency and processing consistency of the multi-stage grinding process of the crankshaft, and is especially suitable for continuous automated processing scenarios of rough grinding, semi-fine grinding and fine grinding.

[0029] In this specific embodiment, the grinding wheel 74 is detachably fixed in the groove of the mounting cylinder 72 by the magnetic attraction of the electromagnet 73;

[0030] When the grinding wheel 74 needs to be replaced, the controller 3 cuts off the current to the electromagnet 73 to release the magnetic attraction. The operator can then directly remove the old grinding wheel 74 and replace it with the new part. Subsequently, the electromagnet 73 is re-energized and fixed in place. Its advantages lie in the fact that the controllable magnetic attraction characteristics of the electromagnet 73 enable the quick installation and removal of the grinding wheel 74. Combined with the groove structure, it ensures installation accuracy and avoids the complicated operation of traditional bolt fixing. This significantly shortens maintenance time and reduces equipment downtime costs, making it particularly suitable for industrial production environments where the grinding wheel 74 is replaced frequently.

[0031] Working principle: The mounting plate 2 at the end of the robotic arm 1 has a built-in controller 3, which controls the rotation of the robotic arm 1 and the independent extension and retraction of the three electric push rods 6 through a preset program. When it is necessary to switch between different grit grinding wheels 74, the controller 3 drives the robotic arm 1 to rotate the turntable 5 around the axis of the connecting rod 4, so that the electric push rod 6 corresponding to the target grinding wheel 74 is aligned with the crankshaft machining position. Then, the electric push rod 6 extends and pushes the drive motor 71 and the mounting cylinder 72 forward, so that the grinding wheel 74 protrudes from the side of the turntable 5 and contacts the crankshaft surface. The other two electric push rods 6 retract to avoid the impact; after the drive motor 71 starts, it drives the mounting cylinder 72 and the grinding wheel 74 attracted by the electromagnet 73 to rotate at high speed for grinding. The pressure sensor in the groove monitors the installation status of the grinding wheel 74 in real time. If an abnormal pressure is detected, it will be fed back to the controller 3 to trigger the shutdown protection; after the current process is completed, the controller 3 controls the robotic arm 1 to reset and switch to the next grit grinding wheel 74. Through the automatic switching and coordinated action of the multi-level grinding wheels 74, the crankshaft is processed from rough grinding to fine grinding.

[0032] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0033] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] 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. An automatic crankshaft grinding device, comprising a robotic arm (1), characterized in that: One end of the robotic arm (1) is fixedly connected to a mounting plate (2). The mounting plate (2) has a cavity inside and a controller (3) is fixedly connected inside the cavity. The controller (3) is electrically connected to the robotic arm (1). A connecting rod (4) is fixedly connected to the side of the mounting plate (2) and a turntable (5) is fixedly connected to the end of the connecting rod (4). The turntable (5) has a through hole on its side. Three electric push rods (6) are fixedly connected to the side of the mounting plate (2) in a rectangular array. One end of the electric push rod (6) passes through the through hole of the turntable (5) and is fixedly connected to a grinding assembly (7). The polishing assembly (7) includes a drive motor (71) and a mounting cylinder (72) fixedly connected to the output end of the drive motor (71). The mounting cylinder (72) has a groove and an electromagnet (73) is fixedly connected in the groove. The electromagnet (73) is magnetically connected to a detachable polishing wheel (74).

2. The automatic crankshaft grinding device according to claim 1, characterized in that: The telescopic end of the electric push rod (6) passes through the through hole of the turntable (5) and is fixedly connected to the housing of the drive motor (71).

3. The automatic crankshaft grinding device according to claim 1, characterized in that: The three electric push rods (6) are connected to grinding wheels (74) with different grit numbers. The robotic arm (1) controls the rotation of the grinding wheels (74) with different grit numbers to switch them to contact the crankshaft.

4. The automatic crankshaft grinding device according to claim 1, characterized in that: The grinding wheel (74) is detachably fixed in the groove of the mounting cylinder (72) by the magnetic attraction of the electromagnet (73).

5. The automatic crankshaft grinding device according to claim 1, characterized in that: A pressure sensor is provided in the groove of the mounting cylinder (72), and the pressure sensor is communicatively connected to the controller (3) to detect the installation status of the grinding wheel (74).

6. The automatic crankshaft grinding device according to claim 1, characterized in that: The three grinding wheels (74) have different grit counts and extend and retract independently via corresponding electric push rods (6). The robotic arm (1) drives the turntable (5) to rotate based on the instructions of the controller (3) and coordinates with the extension and retraction of the electric push rods (6) to switch the grinding wheel (74) with the target grit count to the working position.

Images