A mechanical arm transfer system of a numerical control machine tool for automobile parts machining

Abstract

The application discloses a mechanical arm transfer system of a numerical control machine tool for automobile accessory machining, and relates to the field of mechanical arm machining.The numerical control machine tool body is internally provided with a machining tool, the right side of the numerical control machine tool body is provided with a storage rack, the top end of the storage rack is provided with a clamping arm assembly, the side surface of the clamping arm assembly is provided with a displacement assembly for providing lifting and transverse movement, the inside of the clamping arm assembly is provided with an abrasive mechanism, and the bottom end of the clamping arm assembly is provided with a workpiece.The clamping arm assembly is used for clamping the workpiece.After clamping the workpiece, the system can automatically complete operations such as fixing and inner and outer wall polishing through the abrasive mechanism without the intervention of external equipment, thereby reducing the time loss of mechanical arm waiting and workpiece reloading in traditional production, and the synchronous action design of the polishing block one and the polishing block two allows the inner and outer walls to be synchronously machined, and the processing period of a single workpiece is further compressed.

Description

Technical Field

[0001] This invention relates to the field of robotic arm processing technology, specifically to a robotic arm transfer system for a CNC machine tool used in automotive parts processing. Background Technology

[0002] Currently, the automotive manufacturing industry is rapidly developing towards intelligent production. Auto parts processing, as a crucial link in the automotive industry chain, involves the precision machining of numerous complex components. These parts often require multiple processing steps, including handling, positioning, and internal and external surface machining. CNC machine tools, as core processing equipment, are widely used in auto parts production lines; however, their traditional loading, unloading, and transfer methods still rely on manual labor or single-function robotic arms, making seamless integration between processes difficult. With faster production cycles and higher quality requirements, the manufacturing industry is demanding greater integration and collaboration from automation systems. Robotic arm transfer systems are gradually becoming the hub connecting CNC machine tools, storage units, and inspection stations.

[0003] Existing robotic arm transfer systems in auto parts processing often have the following shortcomings: The separation of workpiece clamping and processing functions means that the robotic arm is only responsible for handling the workpiece. The workpiece needs to be clamped repeatedly to different devices to complete the internal and external surface treatment, which leads to an increase in the cumulative positioning error and affects the processing accuracy. After transferring the workpiece, the traditional robotic arm needs to rely on additional fixtures or manual intervention to perform operations such as grinding, which is inefficient and unstable. The processing of internal and external walls often needs to be carried out in steps, which increases the process interval and equipment occupation time, restricts the overall cycle time of the production line, and relies on independent drive components to realize clamping and processing actions. The lack of coordination can easily lead to the displacement or vibration of the workpiece during processing, especially for thin-walled auto parts, which can easily cause deformation or uneven surface quality. Summary of the Invention

[0004] (a) Technical problems to be solved In view of the above-mentioned shortcomings of the existing technology, the present invention provides a robotic arm transfer system for CNC machine tools used in auto parts processing, which can effectively solve the problems of the existing technology.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: This invention discloses a robotic arm transfer system for a CNC machine tool used in automotive parts processing. The system includes a CNC machine tool body, with machining tools installed inside. A storage rack is installed on the right side of the machine tool body, and a clamping arm assembly is installed at the top of the storage rack. A displacement assembly for providing lifting and lateral movement is installed on the side of the clamping arm assembly, including a conveyor belt and an electric telescopic rod. An abrasive mechanism is installed inside the clamping arm assembly, and a workpiece is placed at the bottom of the clamping arm assembly. The clamping arm assembly is used to clamp the workpiece. Sub-parts are deployed below the abrasive mechanism, including a worktable, a trigger rod, a first grinding block, and a second grinding block. The second grinding block grinds the inner wall of the workpiece when rotating. When the clamping arm assembly releases the workpiece, the trigger rod triggers the second grinding block to fix the workpiece. The first grinding block is used to rise synchronously to the outer wall of the workpiece when the trigger rod is triggered, and grinds the outer wall of the workpiece when the second grinding block rotates again.

[0006] Furthermore, the clamping arm assembly has sub-parts deployed below it, including a telescopic rod, a mounting bracket, a connecting rod, and a connecting swing rod. The telescopic rod is fixedly connected to the displacement output end of the displacement assembly. The mounting bracket is sleeved on the bottom end of the telescopic rod. The connecting rod is fixedly connected to the bottom end of the output shaft of the telescopic rod, and the connecting rod is slidably connected to the mounting bracket.

[0007] Furthermore, the connecting rod is rotatably connected to both the front and rear ends on both sides of the left and right sides, and two fixed clamping rods are provided at the bottom end of the connecting rod. The two fixed clamping rods are slidably connected to a limiting slide rod inside, and the left and right ends of the limiting slide rod are fixedly connected to the inner wall of the mounting frame. The top ends of the fixed clamping rods are rotatably connected to the bottom end of the connecting swing rod.

[0008] Furthermore, each trigger rod is fixedly connected to a drive gear at its bottom end. Both ends of the central shaft of the drive gear are rotatably connected to the inner wall of the working chamber. Each drive gear is meshed with a drive tooth plate on the side that is close to each other. The bottom ends of the drive tooth plates are slidably connected to the inner wall of the working chamber.

[0009] Furthermore, there are two drive gear plates, and each of the top ends of the two drive gear plates is fixedly connected to a mounting shell. The grinding blocks are slidably connected to the inside of the mounting shell on opposite sides. Torque springs are evenly arranged inside the mounting shell. One end of each torsion spring is fixedly connected to the surface of the grinding block, and the other end of each torsion spring is fixedly connected to the inner wall of the mounting shell.

[0010] Furthermore, there are two grinding blocks, and each of the two grinding blocks is provided with a clamping rod on one side that is close to each other. The grinding blocks are slidably connected to the clamping rods. Torsion springs are evenly arranged inside the clamping rods. One end of the torsion spring is fixedly connected to the surface of the grinding block, and the other end of the torsion spring is fixedly connected to the inner wall of the clamping rod.

[0011] Furthermore, a fixing block is sleeved at the bottom end of the clamping rod, and a servo motor is installed at the bottom end of the fixing block. The top end of the output shaft of the servo motor is fixedly connected to the bottom end of the fixing block.

[0012] Furthermore, a second servo motor is installed on one side of the fixed block, and an adjusting rod is fixedly connected to the left end of the output shaft of the second servo motor. The left and right ends of the adjusting rod are rotatably connected to the inner walls of the left and right sides of the fixed block, respectively, and the surface of the adjusting rod is provided with two sets of external threads in opposite directions.

[0013] Furthermore, the bottom end of each clamping rod is fixedly connected to a limiting slider, and the limiting slider is slidably connected to the inner wall of the bottom end of the fixed block.

[0014] (III) Beneficial Effects Compared with the known prior art, the technical solution provided by this invention has the following beneficial effects: 1. By integrating clamping, fixing, and grinding functions into one unit, the number of times the workpiece is transferred between different devices is reduced. After clamping the workpiece, the clamping arm assembly can directly trigger the fixing and grinding actions through the abrasive mechanism, avoiding positioning errors caused by repeated clamping. The grinding block two grinds the inner wall of the workpiece and the fixing action triggered by the trigger rod are carried out simultaneously, ensuring the rigid fixation of the workpiece during the processing, effectively suppressing vibration and displacement, and keeping the processing datum of the inner and outer walls consistent. It is especially suitable for auto parts with high requirements for coaxiality, thereby greatly improving dimensional accuracy and surface consistency and reducing the scrap rate.

[0015] 2. After the workpiece is clamped by the clamping arm assembly, the abrasive mechanism can automatically complete the fixing, inner and outer wall grinding and other operations without the need for external equipment intervention. This reduces the time loss of waiting for the robotic arm and workpiece changing in traditional production. The linkage design of grinding block one and grinding block two allows the inner and outer walls to be processed directly in sequence within the current production cycle, further compressing the processing cycle of a single workpiece, reducing the dependence on manual operation, adapting to the rhythm of continuous production lines, and helping to improve equipment utilization and overall capacity. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a top view of the structure of the present invention; Figure 4 This is a front cross-sectional view of the clamping arm assembly and abrasive mechanism in this invention. Figure 5 For the present invention Figure 4 A magnified schematic diagram of the partial structure at point A in the middle; Figure 6 For the present invention Figure 4 A magnified schematic diagram of the local structure at point B; Figure 7 This is a three-dimensional structural diagram of the workpiece, grinding block II, clamping rod, and limiting slider in this invention; Figure 8 This is a three-dimensional structural diagram of the telescopic rod, mounting frame, connecting rod, and connecting swing rod in this invention.

[0018] The labels in the diagram represent: 1. CNC machine tool body; 2. Clamping arm assembly; 21. Motion telescopic rod; 22. Mounting frame; 23. Connecting rod; 24. Connecting swing arm; 25. Fixed clamping rod; 26. Limiting slide rod; 3. Material storage rack; 4. Abrasive mechanism; 41. Worktable; 42. Work chamber; 43. Servo motor one; 44. Trigger rod; 45. Drive gear; 46. Drive gear plate; 47. Grinding block one; 48. Mounting shell; 49. Torsion spring one; 410. Clamping rod; 411. Grinding block two; 412. Torsion spring two; 413. Servo motor two; 414. Fixed block; 415. Adjusting rod; 416. Limiting slider; 5. Machining tool; 6. Workpiece; 7. Displacement assembly. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to embodiments.

[0021] This embodiment provides a robotic arm transfer system for a CNC machine tool used in automotive parts processing, such as... Figure 1 - Figure 8 As shown, the machine includes a CNC machine tool body 1, with machining tools 5 installed inside. A storage rack 3 is installed on the right side of the CNC machine tool body 1, and a clamping arm assembly 2 is installed at the top of the storage rack 3. A displacement assembly 7 for providing lifting and lateral movement is installed on the side of the clamping arm assembly 2. The displacement assembly 7 includes a conveyor belt and an electric telescopic rod. An abrasive mechanism 4 is installed inside the clamping arm assembly 2, and a workpiece 6 is placed at the bottom of the clamping arm assembly 2 for clamping the workpiece 6. Sub-parts are deployed below the clamping arm assembly 2, including a motion telescopic rod 21, a mounting frame 22, a connecting rod 23, and a connecting swing rod 24. The telescopic rod 21 is fixedly connected to the displacement output end of the displacement component 7. The bottom end of the telescopic rod 21 is fitted with a mounting bracket 22. The bottom end of the output shaft of the telescopic rod 21 is fixedly connected to a connecting rod 23, and the connecting rod 23 is slidably connected to the mounting bracket 22. The front and rear ends of the left and right sides of the connecting rod 23 are rotatably connected to connecting swing rods 24. The bottom end of the connecting rod 23 is provided with two fixed clamping rods 25. The inside of the two fixed clamping rods 25 is slidably connected to a limiting slide rod 26. The left and right ends of the limiting slide rod 26 are fixedly connected to the inner wall of the mounting bracket 22. The top ends of the fixed clamping rods 25 are rotatably connected to the bottom end of the connecting swing rod 24.

[0022] The abrasive mechanism 4 has sub-parts, including a worktable 41, a trigger rod 44, a first grinding block 47, and a second grinding block 411. The second grinding block 411 grinds the inner wall of the workpiece 6 when it rotates. When the clamping arm assembly 2 releases the workpiece 6, the trigger rod 44 triggers the second grinding block 411 to fix the workpiece 6. The first grinding block 47 is used to rise synchronously to the outer wall of the workpiece 6 when the trigger rod 44 is triggered, and grinds the outer wall of the workpiece 6 when the second grinding block 411 rotates again. The bottom of each trigger rod 44 is fixedly connected to a drive gear 45. The front and rear ends of the central shaft of the drive gear 45 are rotatably connected to the inner wall of the working chamber 42. The drive gear 45 is meshed with a drive tooth plate 46 on the side that is close to each other. The bottom of the drive tooth plate 46 is slidably connected to the inner wall of the working chamber 42. There are two drive tooth plates 46. The top of each of the two drive tooth plates 46 is fixedly connected to a mounting shell 48. The side of the grinding block 47 that is far away from each other is slidably connected to the inside of the mounting shell 48. Torque springs 49 are evenly arranged inside the mounting shell 48. One end of each torsion spring 49 is fixedly connected to the surface of the grinding block 47, and the other end of each torsion spring 49 is fixedly connected to the inner wall of the mounting shell 48. There are two grinding blocks 411. Each grinding block 411 has a clamping rod 410 on one side closest to it. The grinding blocks 411 are slidably connected to the clamping rods 410. Torsion springs 412 are evenly distributed inside the clamping rods 410. One end of each torsion spring 412 is fixedly connected to the surface of the grinding block 411, and the other end is fixedly connected to the inner wall of the clamping rods 410. A fixing block 414 is fitted onto the bottom end of the clamping rods 410. A servo motor 43 is mounted on the bottom end of the fixing block 414. The top end of the output shaft of servo motor 43 is fixedly connected to the bottom end of the fixed block 414; servo motor 413 is installed on one side of the fixed block 414, and an adjusting rod 415 is fixedly connected to the left end of the output shaft of servo motor 413. The left and right ends of the adjusting rod 415 are rotatably connected to the inner walls of the left and right sides of the fixed block 414, respectively. Two sets of external threads in opposite directions are opened on the surface of the adjusting rod 415; the bottom ends of the clamping rods 410 are all fixedly connected to limit sliders 416, and the limit sliders 416 are all slidably connected to the inner wall of the bottom end of the fixed block 414.

[0023] In traditional technical solutions, robotic arms, fixtures, and grinding equipment are usually functionally independent units. After the robotic arm completes the workpiece handling and clamping, the workpiece needs to be transferred to a dedicated grinding station. This process involves complex positioning and docking, fixture switching, or manual intervention, resulting in a significant portion of the production cycle being occupied by non-processing time such as handling, waiting, and reclamping. This system integrates the clamping arm assembly 2, the trigger rod 44, and the inner and outer wall grinding tools grinding blocks 411 and 47 into the device, transforming the transfer process itself into a processing step. When the workpiece 6 is transported to the target position and the clamping is released, the system automatically triggers the fixing behavior and simultaneously starts the inner and outer wall grinding. This eliminates the physical intervals between processes and the waiting time for equipment coordination in the traditional mode, so that processing starts as soon as the handling ends. It compresses multiple serial steps into a continuous automated action, greatly shortening the overall processing cycle of a single product. It is particularly suitable for large-scale automotive parts manufacturing with strict requirements for production cycle.

[0024] Working principle: In specific implementation, the blank material is processed by the processing tool 5 to become the workpiece 6. The workpiece 6 is transported to the storage rack 3. The displacement component 7 controls the clamping arm component 2 to move within the storage rack 3, moving it above a certain workpiece 6. The output shaft of the control telescopic rod 21 descends, causing the connecting rod 23 to move within the mounting frame 22 and pulling the connecting swing rod 24 to swing. Under the limitation of the movement trajectory of the fixed clamping rod 25 by the limiting slide rod 26, the fixed clamping rod 25 slides on the limiting slide rod 26, causing the two fixed clamping rods 25 to move closer to each other, so that the two fixed clamping rods 25 clamp and fix the workpiece 6 in the specified position. Based on the current working condition, the processing parameters of the same type of workpiece 6 are retrieved from the associated historical data. The operating settings parameters of the corresponding servo motor 43 for the rotation speed and duration of the inner and outer wall grinding cycles are obtained and submitted to the current servo motor 43 for corresponding settings. Simultaneously, the operating settings parameters of the rotation direction, rotation speed, and duration of servo motor 413 for processing the same type of workpiece 6 are extracted and set sequentially in the corresponding cycles. The workpiece 6, after being clamped, is moved to the top of the worktable 41 by the displacement component 7 and inserted. The workpiece is inserted into the work chamber 42, so that the second grinding block 411 is inserted into the workpiece 6. Then, the first servo motor 43 is started, so that the output shaft of the first servo motor 43 drives the clamping rod 410 to rotate through the fixed block 414. The clamping rod 410 drives the second grinding block 411 to grind the inner wall of the workpiece 6. During the grinding process, the second grinding block 411 is pressed against the second torsion spring 412. The clamping rod 410 provides a displacement range for the second grinding block 411, and the rebound force of the second torsion spring 412 provides displacement compensation for the second grinding block 411. After grinding by grinding block 411, the output shaft of the controllable telescopic rod 21 rises, causing the two fixed clamping rods 25 to move away from each other, releasing the workpiece 6 from its fixation. This causes the fixed clamping rods 25 to contact the trigger rod 44, which in turn drives the drive gear 45 to rotate. During this rotation, the drive gear 45 drives the drive gear plate 46 to rise. Once the fixed clamping rods 25 are away from the workpiece 6, grinding block 47 is inserted between grinding block 35 and the workpiece 6, bringing it into contact with the outer wall of the workpiece 6. Simultaneously, servo motor 413 starts, causing its output shaft to... The rotating adjustment rod 415, under the action of the reverse thread and the limitation of the movement trajectory of the clamping rod 410 by the limiting slider 416, causes the two clamping rods 410 to move away from each other, clamping and fixing the inner wall of the workpiece 6 in the opposite direction. When the servo motor 43 is restarted, the clamping rod 410 drives the workpiece 6 to rotate, so that the grinding block 47 grinds the outer wall of the workpiece 6 synchronously. Under the action of the rebound force of the torsion spring 49, the grinding block 47 compresses the torsion spring 49 during the grinding process, and the mounting shell 48 provides the displacement range for the grinding block 47.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A robotic arm transfer system for a CNC machine tool used in automotive parts processing, characterized in that, The system includes a CNC machine tool body (1), inside which a machining tool (5) is installed. A storage rack (3) is installed on the right side of the CNC machine tool body (1). A clamping arm assembly (2) is installed at the top of the storage rack (3). A displacement assembly (7) for providing lifting and lateral movement is installed on the side of the clamping arm assembly (2). An abrasive mechanism (4) is provided inside the clamping arm assembly (2). A workpiece (6) is provided at the bottom of the clamping arm assembly (2). The clamping arm assembly (2) is used to clamp the workpiece (6). The abrasive mechanism... (4) The lower level is equipped with sub-parts, including a worktable (41), a trigger rod (44), a first grinding block (47) and a second grinding block (411). The second grinding block (411) grinds the inner wall of the workpiece (6) when it rotates. When the clamping arm assembly (2) releases the workpiece (6), the trigger rod (44) triggers the second grinding block (411) to fix the workpiece (6). The first grinding block (47) is used to rise synchronously to the outer wall of the workpiece (6) when the trigger rod (44) is triggered. When the second grinding block (411) rotates again, it grinds the outer wall of the workpiece (6).

2. The robotic arm transfer system for a CNC machine tool used in auto parts processing according to claim 1, characterized in that, The clamping arm assembly (2) has sub-parts deployed below it, including a telescopic rod (21), a mounting bracket (22), a connecting rod (23), and a connecting swing rod (24). The telescopic rod (21) is fixedly connected to the displacement output end of the displacement assembly (7). The mounting bracket (22) is sleeved on the bottom end of the telescopic rod (21). The connecting rod (23) is fixedly connected to the bottom end of the output shaft of the telescopic rod (21), and the connecting rod (23) is slidably connected to the mounting bracket (22).

3. The robotic arm transfer system for a CNC machine tool used in auto parts processing according to claim 2, characterized in that, The connecting rod (23) is rotatably connected to the front and rear ends of both sides. The bottom end of the connecting rod (23) is provided with two fixed clamps (25). The two fixed clamps (25) are slidably connected to the inside of the two fixed clamps (25). The left and right ends of the fixed clamps (26) are fixedly connected to the inner wall of the mounting frame (22). The top ends of the fixed clamps (25) are rotatably connected to the bottom end of the connecting rod (24).

4. The robotic arm transfer system for a CNC machine tool used in auto parts processing according to claim 1, characterized in that, The bottom of each trigger rod (44) is fixedly connected to a drive gear (45). The front and rear ends of the central shaft of the drive gear (45) are rotatably connected to the inner wall of the working chamber (42). The drive gears (45) are meshed with drive tooth plates (46) on the side that are close to each other. The bottom ends of the drive tooth plates (46) are slidably connected to the inner wall of the working chamber (42).

5. The robotic arm transfer system for a CNC machine tool used in auto parts processing according to claim 4, characterized in that, There are two drive gear plates (46), and the top of each of the two drive gear plates (46) is fixedly connected to a mounting shell (48). The grinding blocks (47) are slidably connected to the inside of the mounting shell (48) on opposite sides. Torque springs (49) are evenly arranged inside the mounting shell (48). One end of each torsion spring (49) is fixedly connected to the surface of the grinding block (47), and the other end of each torsion spring (49) is fixedly connected to the inner wall of the mounting shell (48).

6. The robotic arm transfer system for a CNC machine tool used in auto parts processing according to claim 1, characterized in that, There are two grinding blocks (411). Each of the two grinding blocks (411) is provided with a clamping rod (410) on one side that is close to each other. The grinding blocks (411) are slidably connected to the clamping rods (410). Torsion springs (412) are evenly arranged inside the clamping rods (410). One end of the torsion springs (412) is fixedly connected to the surface of the grinding blocks (411), and the other end of the torsion springs (412) is fixedly connected to the inner wall of the clamping rods (410).

7. The robotic arm transfer system for a CNC machine tool used in auto parts processing according to claim 6, characterized in that, The bottom end of the clamping rod (410) is fitted with a fixing block (414), and the bottom end of the fixing block (414) is fitted with a servo motor (43). The top end of the output shaft of the servo motor (43) is fixedly connected to the bottom end of the fixing block (414).

8. The robotic arm transfer system for a CNC machine tool used in auto parts processing according to claim 7, characterized in that, A servo motor (413) is installed on one side of the fixed block (414). An adjusting rod (415) is fixedly connected to the left end of the output shaft of the servo motor (413). The left and right ends of the adjusting rod (415) are rotatably connected to the inner walls of the left and right sides of the fixed block (414), respectively. Two sets of external threads in opposite directions are opened on the surface of the adjusting rod (415).

9. The robotic arm transfer system for a CNC machine tool used in auto parts processing according to claim 7, characterized in that, The bottom end of each clamping rod (410) is fixedly connected to a limiting slider (416), and the limiting slider (416) is slidably connected to the inner wall of the bottom end of the fixing block (414).

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