Automatic clamping equipment for numerical control machine tool cutter

Abstract

The invention discloses numerical control machine tool cutter automatic clamping equipment, and relates to the technical field of machining equipment.The numerical control machine tool cutter automatic clamping equipment comprises a cutter handle structure, a visual detection device and a screwing mechanism, the cutter handle structure comprises a cutter handle chuck and a pressing nut, and the pressing nut can rotate relative to the cutter handle chuck; the cutter handle chuck is tightened and is used for clamping a cutter; a first clamping part is arranged on the periphery of the pressing nut; the visual detection device is used for acquiring the rotating position of the first clamping part; the screwing mechanism comprises a first driving mechanism and a rotating part, the first driving mechanism is electrically connected with the visual detection device, the first driving mechanism is in transmission connection with the rotating part, and the rotating part is provided with a second clamping part; the first driving mechanism is used for driving the rotating part to rotate; and the second clamping part is clamped with the first clamping part. According to the technical scheme, manual operation is reduced, the clamping speed and precision are improved, meanwhile, the working intensity and the error rate of operators are reduced, and the tool clamping efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of processing equipment, and in particular to an automatic clamping device for a tool of a numerical control machine tool. Background Art

[0002] In the field of CNC machine tool processing, the clamping process of the tool directly affects the processing efficiency and precision. At present, most of them rely on manual operation, that is, the operator installs the tool on the tool handle through a specific tool. First, there are certain safety hazards in the manual clamping process. Once the operator operates improperly or loses concentration, accidents are likely to occur; secondly, manual clamping requires high skills of the operator, and professionally trained operators are required to ensure the accuracy and consistency of clamping. However, in the actual production environment, the technical level of the operators is uneven, and it is easy to cause clamping errors due to human factors, which in turn affects the processing quality. Finally, the manual clamping process is cumbersome and time-consuming, especially in multi-tool and high-frequency processing tasks, a lot of time and energy are wasted in the repeated clamping process. Therefore, the existing manual clamping method of the tool has the problems of low clamping safety, low precision and low efficiency. Summary of the invention

[0003] The main purpose of the present invention is to provide an automatic clamping device for CNC machine tool tools, aiming to solve the problems of low clamping safety, low precision and low efficiency in manual clamping of tools.

[0004] To achieve the above-mentioned purpose, the present invention provides an automatic clamping device for CNC machine tool tools, comprising: A tool handle structure, the tool handle structure comprising a tool handle chuck and a clamping nut, the clamping nut can rotate relative to the tool handle chuck to tighten the tool handle chuck and clamp the tool; a first clamping portion is provided on the outer periphery of the clamping nut; A visual detection device, the visual detection device is used to obtain the rotation position of the first clamping portion; The tightening mechanism includes a first driving mechanism and a rotating part, the first driving mechanism is electrically connected to the visual detection device, the first driving mechanism is transmission-connected to the rotating part, and the rotating part is provided with a second clamping part; the first driving mechanism is used to drive the rotating part to rotate; the second clamping part is clamped with the first clamping part.

[0005] In one embodiment, the automatic tool clamping device for CNC machine tools further includes a pressure detection device, which is used to obtain the rotational torque value of the first driving mechanism, and the pressure detection device is electrically connected to the first driving mechanism.

[0006] In one embodiment, the rotating member is provided with a connecting hole, the inner wall of the connecting hole is provided with a limiting groove, and the pressure detection device is arranged in the limiting groove; a convex portion is provided on the driving shaft of the first driving mechanism, the driving shaft is connected to the connecting hole, the convex portion is inserted into the limiting groove, and the convex portion abuts against the pressure detection device.

[0007] In one embodiment, the automatic clamping equipment for CNC machine tools also includes a working platform and a moving mechanism, the working platform is provided with a guide groove, the moving mechanism is used to drive the tool handle structure to move along the guide groove, and the visual inspection device and the tightening mechanism are arranged in sequence along the length direction of the guide groove.

[0008] In one embodiment, the visual inspection device includes a first support frame and a visual camera, wherein the visual camera is mounted on the first support frame, a viewfinder of the visual camera faces the guide groove, and the visual camera is electrically connected to the first driving mechanism.

[0009] In one embodiment, the moving mechanism includes a second driving mechanism, a screw rod and a slide, the second driving mechanism is arranged at one end of the guide groove, the second driving mechanism is connected to the screw rod in transmission, the screw rod is threadedly matched with the slide, and the tool handle structure is arranged on the slide; the screw rod is extended along the length direction of the guide groove.

[0010] In one embodiment, the second driving mechanism comprises a second driving motor; and / or, The tightening mechanism further includes a second support frame, the second support frame is arranged on the working platform, and the second driving mechanism is installed on the second support frame.

[0011] In one embodiment, the CNC machine tool automatic clamping device further includes a controller, wherein the controller is electrically connected to the first driving mechanism and the second driving mechanism respectively, and the controller is communicatively connected to the visual detection device and the pressure detection device respectively.

[0012] In one embodiment, the first clamping portion includes a plurality of grooves, and the second clamping portion includes a plurality of splines, and the splines can be clamped into the grooves.

[0013] In one embodiment, the first driving mechanism comprises a telescopic rotary motor; or, The first driving mechanism includes a lifting device and a first driving motor. The lifting device is connected to the first driving motor. The lifting device is used to drive the first driving motor to move up and down. The driving shaft of the first driving motor is connected to the rotating member.

[0014] The technical solution of the present invention adopts a tool holder chuck to directly clamp the tool, and the clamping nut can rotate relative to the tool holder chuck, and the tool holder chuck is tightened by tightening the clamping nut, thereby clamping the tool; in addition, a visual detection device is added to obtain the rotation position of the first clamping part on the clamping nut, thereby ensuring the precise alignment of the first clamping part and the second clamping part during the clamping process, thereby ensuring the accuracy of the clamping; then the first driving mechanism is electrically connected to the visual detection device, so that the visual detection device drives the first driving mechanism, and the first driving mechanism is used to be connected to the rotating member for transmission, so as to achieve the purpose of driving the rotating member to rotate; wherein the rotating member is provided with a second clamping part, and the first driving mechanism rotates the second clamping part to an angle corresponding to the first clamping part, thereby ensuring that the second clamping part and the first clamping part can be accurately clamped, so that the connection between the rotating member and the clamping nut is stable; then the first driving mechanism is used to drive the rotating member to rotate, so that the rotating member drives the clamping nut to rotate relative to the tool holder chuck until the tool holder chuck is tightened and the tool is clamped. The automatic tool clamping device for CNC machine tools reduces manual operation, improves clamping speed and precision, and also reduces the workload and error rate of operators, which helps to improve tool clamping efficiency and clamping quality, and further reduces the downtime of CNC machine tools and improves the productivity of CNC machine tools. The automatic tool clamping device for CNC machine tools has the advantages of high clamping safety, high clamping precision and high clamping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 A schematic structural diagram of an embodiment of an automatic tool clamping device for a CNC machine tool provided by the present invention; Figure 2 A schematic diagram of the partial structure of an embodiment of the automatic clamping device for CNC machine tool provided by the present invention; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 A schematic structural diagram of a rotating part of an embodiment of an automatic tool clamping device for a CNC machine tool provided by the present invention.

[0017] Description of Figure Numbers: 1. Tool handle structure; 11. Tool handle chuck; 12. Pressing nut; 121. First clamping part; 2. Visual detection device; 21. First support frame; 22. Visual camera; 3. Tightening mechanism; 31. First drive mechanism; 32. Rotating member; 321. Second clamping part; 322. Connecting hole; 323. Limiting groove; 33. Second support frame; 4. Pressure detection device; 5. Working platform; 51. Guide groove; 6. Moving mechanism; 61. Second drive mechanism; 62. Screw; 63. Slide; 64. Mounting seat; 7. Tool.

[0018] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] In the field of CNC machine tool processing, the clamping process of the tool directly affects the processing efficiency and precision. At present, most of them rely on manual operation, that is, the operator installs the tool on the tool handle through a specific tool. First, there are certain safety hazards in the manual clamping process. Once the operator operates improperly or loses concentration, accidents are likely to occur; secondly, manual clamping requires high skills of the operator, and professionally trained operators are required to ensure the accuracy and consistency of clamping. However, in the actual production environment, the technical level of the operators is uneven, and it is easy to cause clamping errors due to human factors, which in turn affects the processing quality. Finally, the manual clamping process is cumbersome and time-consuming, especially in multi-tool and high-frequency processing tasks, a lot of time and energy are wasted in the repeated clamping process. Therefore, the existing manual clamping method of the tool has the problems of low clamping safety, low precision and low efficiency.

[0023] In order to solve the above problems, the present invention provides an automatic clamping device for tool of a numerical control machine tool.

[0024] See also Figures 1 to 4 In one embodiment of the present invention, the automatic clamping device for CNC machine tool tools includes a tool handle structure 1, a visual inspection device 2 and a tightening mechanism 3. The tool handle structure 1 includes a tool handle chuck 11 and a clamping nut 12. The clamping nut 12 can rotate relative to the tool handle chuck 11 so that the tool handle chuck 11 is tightened and used to clamp the tool 7; the outer periphery of the clamping nut 12 is provided with a first clamping portion 121; the visual inspection device 2 is used to obtain the rotation position of the first clamping portion 121; the tightening mechanism 3 includes a first driving mechanism 31 and a rotating member 32, the first driving mechanism 31 is electrically connected to the visual inspection device 2, the first driving mechanism 31 is transmission-connected to the rotating member 32, and the rotating member 32 is provided with a second clamping portion 331; the first driving mechanism 31 is used to drive the rotating member 32 to rotate; the second clamping portion 331 is clamped with the first clamping portion 121.

[0025] In the above structure, the tool 7 is directly clamped by the tool handle chuck 11, and the clamping nut 12 can rotate relative to the tool handle chuck 11. The tool handle chuck 11 is tightened by tightening the clamping nut 12, thereby clamping the tool 7. In addition, a visual detection device 2 is added to obtain the rotation position of the first clamping portion 121 on the clamping nut 12 to ensure that the first clamping portion 121 and the second clamping portion 331 are accurately aligned during the clamping process, thereby ensuring the accuracy of the clamping. Then, the first driving mechanism 31 is electrically connected to the visual detection device 2, so that the visual detection device 2 drives the first driving mechanism 31, and the visual detection device 2 drives the first driving mechanism 31. A driving mechanism 31 is connected to the rotating member 32 in a transmission manner to achieve the purpose of driving the rotating member 32 to rotate; wherein the rotating member 32 is provided with a second clamping portion 331, and the first driving mechanism 31 rotates the second clamping portion 331 to an angle corresponding to the first clamping portion 121, ensuring that the second clamping portion 331 and the first clamping portion 121 can be accurately clamped, so that the rotating member 32 is stably connected to the clamping nut 12; and then the first driving mechanism 31 is used to drive the rotating member 32 to rotate, so that the rotating member 32 drives the clamping nut 12 to rotate relative to the tool holder chuck 11, until the tool holder chuck 11 is tightened and clamps the tool 7. The automatic clamping device for tool of CNC machine tool reduces manual operation, improves clamping speed and precision, and also reduces the work intensity and error rate of operators, which helps to improve the clamping efficiency and clamping quality of tool 7, and further reduces the downtime of CNC machine tool, and improves the production capacity of CNC machine tool. The automatic clamping device for tool of CNC machine tool has the advantages of high clamping safety, high clamping precision and high clamping efficiency.

[0026] Among them, the tool handle structure 1 adopts a spring tool handle, and the tool handle chuck 11 is specifically a spring sleeve with a taper. During the tightening process of the clamping nut 12, the tool handle chuck 11 gradually shrinks during the axial movement (locking) of the clamping nut 12 to achieve clamping of the cutting tool; the tool handle structure 1 can adapt to tools 7 of different diameters to achieve the purpose of quickly and stably clamping the tool 7.

[0027] In one embodiment, the automatic clamping device for CNC machine tool tools further includes a pressure detection device 4, which is used to obtain the rotation torque value of the first drive mechanism 31, and the pressure detection device 4 is electrically connected to the first drive mechanism 31. The pressure detection device 4 can monitor the rotation torque value of the first drive mechanism 31 in real time, ensure the clamping accuracy of the tool 7, reduce the wear of components during the clamping process to reduce energy loss; avoid damage to the tool 7 and the handle structure 1 caused by excessive rotation torque of the first drive mechanism 31, and improve the clamping efficiency of the tool 7 and the service life of the tool 7. At the same time, it can also ensure that the torque of the clamping nut 12 is consistent each time the tool 7 is clamped, thereby improving the clamping accuracy of the tool 7. The pressure detection device 4 is electrically connected to the first drive mechanism 31, so that the pressure detection device 4 and the first drive mechanism 31 can communicate through electrical signals, realize precise control of the first drive mechanism 31, and improve the stability and reliability of the clamping process of the tool 7.

[0028] In one embodiment, the tightening mechanism 3 also includes a rotating part 32 with a connecting hole 322, the inner wall of the connecting hole 322 is provided with a limiting groove 323, and the pressure detection device 4 is arranged in the limiting groove 323; a convex portion is provided on the driving shaft of the first driving mechanism 31, the driving shaft is connected to the connecting hole 322, the convex portion is inserted into the limiting groove 323, and the convex portion abuts against the pressure detection device 4. The connecting hole 322 is used to connect with the driving shaft of the first driving mechanism 31, and the limiting groove 323 is a limiting structure on the inner wall of the connecting hole 322. The driving shaft is the shaft for transmitting power in the first driving mechanism 31. The driving shaft is provided with a convex portion, and the convex portion cooperates with the limiting groove 323 of the connecting hole 322 to ensure the connection stability between the driving shaft and the rotating member 32; the limiting groove 323 is used to install and position the pressure detection device 4; at the same time, to ensure that the pressure detection device 4 abuts against the convex portion on the driving shaft, and then the pressure detection device 4 can be used to directly sense the force on the convex portion, thereby measuring the rotational torque value of the first driving mechanism 31 to ensure the stability and reliability of the tightening mechanism 3, and the limiting groove 323 and the convex portion cooperate to facilitate the installation and disassembly of the pressure detection device 4, and to facilitate maintenance and replacement.

[0029] In one embodiment, the tightening mechanism 3 further includes a second support frame 33, the second support frame 33 is arranged on the working platform 5, and the second driving mechanism 61 is installed on the second support frame 33. The second driving mechanism 61 is installed on the second support frame 33, so that the rotating member 32 is located above the handle structure 1, so that the rotating member 32 is more convenient when performing the tightening operation, which can reduce the delay and error in the transmission process, and improve the response speed and clamping efficiency of the clamping action.

[0030] In one embodiment, the automatic clamping device for CNC machine tool tools also includes a working platform 5 and a moving mechanism 6. The working platform 5 is provided with a guide groove 51. The moving mechanism 6 is used to drive the tool handle structure 1 to move along the guide groove 51. The visual inspection device 2 and the tightening mechanism 3 are sequentially arranged along the length direction of the guide groove 51. The working platform is the basic part of the clamping device, which provides a stable operating plane for setting the guide groove 51 and installing the moving mechanism 6, the visual inspection device 2 and the tightening mechanism 3. Among them, the guide groove 51 is arranged on the working platform 5, and is used to guide the moving mechanism 6 to drive the movement of the tool handle structure 1. The guide groove 51 and the visual inspection device 2 and the tightening mechanism 3 are on the same extension line. The additional guide groove 51 ensures the linearity and accuracy of the movement, so that the tool handle structure 1 moves along the guide groove 51, can accurately pass through the visual inspection device 2 and reach the bottom of the tightening mechanism 3.

[0031] In one embodiment, the visual inspection device 2 includes a first support frame 21 and a visual camera 22 . The visual camera 22 is mounted on the first support frame 21 . The viewfinder of the visual camera 22 faces the guide groove 51 . The visual camera 22 is electrically connected to the first driving mechanism 31 . In the above structure, the first support frame 21 is used to fix and support the visual camera 22, providing a stable working platform 5 for the visual camera 22, so that the viewfinder of the visual camera 22 can be accurately aimed at the target area; the visual camera 22 is used to capture the image of the first clamping part 121 on the tool handle structure 1, and obtain the rotation angle information of the first clamping part 121 through the image; specifically, the visual camera 22 can be connected to the host computer (i.e., a controller or a computer), and the host computer is connected to the first driving mechanism 31; the host computer image obtains the rotation position information of the first clamping part 121, and controls the first driving mechanism 31 to drive the rotating member 32 to rotate, so that the second clamping part 331 rotates to correspond to the first clamping part 121, so as to ensure that the first clamping part 121 is clamped with the second clamping part 331, thereby improving the automation level and operation accuracy of the automatic clamping equipment of CNC machine tools. The visual camera 22 is aligned with the first clamping part 121 on the handle structure 1 to capture the image, ensuring that the camera can clearly capture the features of the first clamping part 121, and provide raw data for subsequent image processing and angle measurement; the host computer improves the image quality through image processing techniques, such as denoising, enhancement, binarization and other operations, so that the features of the first clamping part 121 are more obvious, which is convenient for subsequent feature extraction and angle calculation; the key features of the first clamping part 121, such as edges, corners, etc., are extracted using computer vision algorithms to determine the precise position and posture of the clamping part; and then the rotation angle of the first clamping part 121 is calculated through image analysis techniques, such as Hough Transform or minimum circumscribed rectangle (minAreaRect). The rotation angle information obtained will be used to control the first drive mechanism 31 to ensure that the second clamping part 331 is compatible with the rotation angle of the first clamping part 121.

[0032] In one embodiment, the moving mechanism 6 includes a second driving mechanism 61, a screw rod 62 and a slide 63. The second driving mechanism 61 is arranged at one end of the guide groove 51. The second driving mechanism 61 is connected to the screw rod 62 by transmission. The screw rod 62 is threadedly matched with the slide 63. The handle structure 1 is arranged on the slide 63. The screw rod 62 is extended along the length direction of the guide groove 51. The screw rod 62 is a transmission element between the second driving mechanism 61 and the slide 63, which is used to convert the rotational motion of the second driving mechanism 61 into linear motion, thereby realizing the movement of the slide 63. Specifically, the screw rod 62 and the slide 63 are threadedly matched. When the screw rod 62 rotates, the nut moves on the screw rod 62, driving the slide 63 to move along the length direction of the screw rod 62. The slide 63 is a moving component in the moving mechanism 6. The top of the slide 63 is connected to the handle structure 1, and the slide 63 drives the handle structure 1 to move along the length direction of the guide groove 51. The guide groove 51 provides guidance for the movement of the screw rod 62 and the slide 63, ensuring the linearity and accuracy of the movement of the slide 63. The screw rod 62 is extended along the length direction of the guide groove 51, which helps to maintain the stability of the screw rod 62 and reduce the deviation during the movement. The transmission connection between the second drive mechanism 61 and the screw rod 62 can be directly connected or through a transmission element such as a coupling, gear, etc., ensuring that the power of the second drive mechanism 61 can be effectively transmitted to the screw rod 62.

[0033] In one embodiment, the second drive mechanism 61 includes a second drive motor. The second drive motor w is a stepper motor or a servo motor, which is responsible for providing power to drive the rotation of the screw rod 62. In addition, the moving mechanism 6 is also provided with a mounting seat, which is used to mount the second drive motor. The stepper motor can provide precise step angle control, and the servo motor provides higher precision speed and position control, which can improve the accuracy of the clamping of the tool 7; the mounting seat is a structure for fixing and supporting the second drive motor, ensuring the stability and reliability of the second drive motor during operation.

[0034] In one embodiment, the automatic clamping device for CNC machine tool further comprises a controller, which is electrically connected to the first drive mechanism 31 and the second drive mechanism 61 respectively, and is communicated with the visual detection device 2 and the pressure detection device 4 respectively. The controller is the core of the entire automatic clamping device, responsible for receiving and processing signals from various parts, and issuing corresponding control instructions. It ensures the coordinated work of the first drive mechanism 31, the second drive mechanism 61, the visual detection device 2 and the pressure detection device 4 to achieve an accurate clamping process of the tool 7. The controller directly controls the first drive mechanism 31 and the second drive mechanism 61 through electrical connection, so that the controller can send instructions to the first drive mechanism 31 and the second drive mechanism 61, such as start, stop, speed and direction, etc., to accurately control the clamping of the tool 7 and the movement of the tool handle structure 1. The controller is communicated with the visual detection device 2, receives the image data captured by the visual detection device 2, and determines the precise position of the first clamping portion 121 and the second clamping portion 331 to ensure the clamping of the accurate tool 7. The controller is also connected to the pressure detection device 4 for communication, and obtains the torque value measured by the pressure detection device 4 in real time to monitor and adjust the force during the clamping process to ensure the reliability, safety and consistency of the clamping, improve the accuracy and stability of the clamping process, and make the entire clamping process more automated and intelligent, reducing manual intervention and improving the clamping efficiency of the tool 7.

[0035] In one embodiment, the first clamping portion 121 includes a plurality of grooves, and the second clamping portion 331 includes a plurality of splines, and the splines can be inserted into the grooves. The first clamping portion 121 is arranged on the outer periphery of the clamping nut 12, and the shape and size of the grooves match the splines of the second clamping portion 331; when the splines of the second clamping portion 331 are inserted into the grooves of the first clamping portion 121, the locking between the rotating member 32 and the clamping nut 12 can be achieved, ensuring that the clamping nut 12 and the rotating member 32 keep synchronous rotation during the rotation of the rotating member 32. By utilizing the matching of the grooves and the splines, it is helpful to improve the stability of the structure, and it is possible to prevent the rotating member 32 and the clamping nut 12 from accidentally disengaging under high torque conditions, so that the first driving mechanism 31 can drive the clamping nut 12 to rotate accurately through the rotating member 32, thereby realizing the automatic clamping of the tool 7; and the design of the grooves and the splines facilitates quick clamping and release, thereby improving the clamping efficiency of the tool 7.

[0036] In one embodiment, the first driving mechanism 31 includes a telescopic rotary motor. In the above structure, the telescopic rotary motor integrates the functions of rotation and linear motion, so that the first driving mechanism 31 can simultaneously control the rotation and axial movement of the rotating member 32; specifically, the moving mechanism 6 drives the handle structure 1 to move through the visual inspection device 2, and the visual inspection device 2 obtains the rotation angle of the first clamping portion 121, and the moving mechanism 6 continues to drive the handle structure 1 to move below the rotating member 32, and the telescopic rotary motor drives the rotating member 32 to rotate until the second clamping portion 331 matches the rotation angle of the first clamping portion; the rotating member 32 is driven by the telescopic rotary motor to move axially, and the lifting is realized, so that the rotating member 32 descends until the second clamping portion 331 is clamped with the first clamping portion 121. The telescopic rotary motor can adopt a motor structure that can realize rotation and telescoping in the prior art.

[0037] In one embodiment, the first driving mechanism 31 includes a lifting device and a first driving motor, the lifting device is connected to the first driving motor, the lifting device is used to drive the first driving motor to lift, and the driving shaft of the first driving motor is connected to the rotating member 32. The moving mechanism 6 drives the tool handle structure 1 to move through the visual inspection device 2, the visual inspection device 2 obtains the rotation angle of the first clamping portion 121, the moving mechanism 6 continues to drive the tool handle structure 1 to move below the rotating member 32, and the first driving motor drives the rotating member 32 to rotate until the second clamping portion 331 is adapted to the rotation angle of the first clamping portion; the lifting device drives the rotating member 32 to move axially, so that the rotating member 32 descends until the second clamping portion 331 is clamped with the first clamping portion 121, and the first driving motor drives the rotating member 32 to rotate again, so that the clamping nut 12 rotates synchronously with the rotating member 32, and the clamping nut 12 rotates relative to the tool handle chuck 11, so that the tool handle chuck 11 tightens and clamps the tool 7.

[0038] The technical solution of the present invention adopts a tool holder chuck 11 to directly clamp the tool 7, and the clamping nut 12 can rotate relative to the tool holder chuck 11. The tool holder chuck 11 is tightened by tightening the clamping nut 12, thereby clamping the tool 7; in addition, a visual detection device 2 is added to obtain the rotation position of the first clamping portion 121 on the clamping nut 12, so as to ensure that the first clamping portion 121 and the second clamping portion 331 are accurately aligned during the clamping process, thereby ensuring the accuracy of the clamping; and then the first driving mechanism 31 is electrically connected to the visual detection device 2, so that the visual detection device 2 drives the first driving mechanism 31, and the tool 7 is clamped by the visual detection device 2. The first driving mechanism 31 is connected to the rotating member 32 in a transmission manner to achieve the purpose of driving the rotating member 32 to rotate; wherein the rotating member 32 is provided with a second clamping portion 331, and the first driving mechanism 31 rotates the second clamping portion 331 to an angle corresponding to the first clamping portion 121, ensuring that the second clamping portion 331 and the first clamping portion 121 can be accurately clamped, so that the rotating member 32 is stably connected to the clamping nut 12; and then the first driving mechanism 31 is used to drive the rotating member 32 to rotate, so that the rotating member 32 drives the clamping nut 12 to rotate relative to the tool handle chuck 11, until the tool handle chuck 11 is tightened and clamps the tool 7. The automatic clamping device for tool of CNC machine tool reduces manual operation, improves clamping speed and precision, and also reduces the work intensity and error rate of operators, which helps to improve the clamping efficiency and clamping quality of tool 7, and further reduces the downtime of CNC machine tool, and improves the production capacity of CNC machine tool. The automatic clamping device for tool of CNC machine tool has the advantages of high clamping safety, high clamping precision and high clamping efficiency.

[0039] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An automatic clamping device for CNC machine tool tools, characterized in that: include A tool handle structure, the tool handle structure comprising a tool handle chuck and a clamping nut, the clamping nut can rotate relative to the tool handle chuck to tighten the tool handle chuck and clamp the tool; a first clamping portion is provided on the outer periphery of the clamping nut; A visual detection device, the visual detection device is used to obtain the rotation position of the first clamping portion; The tightening mechanism includes a first driving mechanism and a rotating part, the first driving mechanism is electrically connected to the visual detection device, the first driving mechanism is transmission-connected to the rotating part, and the rotating part is provided with a second clamping part; the first driving mechanism is used to drive the rotating part to rotate; the second clamping part is clamped with the first clamping part.

2. The automatic clamping device for CNC machine tool tools according to claim 1, characterized in that: It also includes a pressure detection device, which is used to obtain the rotation torque value of the first driving mechanism, and the pressure detection device is electrically connected to the first driving mechanism.

3. The automatic clamping device for CNC machine tool tools according to claim 2, characterized in that: The rotating member is provided with a connecting hole, the inner wall of the connecting hole is provided with a limiting groove, and the pressure detection device is arranged in the limiting groove; a convex portion is provided on the driving shaft of the first driving mechanism, the driving shaft is connected to the connecting hole, the convex portion is inserted into the limiting groove, and the convex portion abuts against the pressure detection device.

4. The automatic clamping device for CNC machine tool tools according to claim 2, characterized in that: It also includes a working platform and a moving mechanism, wherein the working platform is provided with a guide groove, and the moving mechanism is used to drive the tool handle structure to move along the guide groove, and the visual detection device and the tightening mechanism are sequentially arranged along the length direction of the guide groove.

5. The automatic clamping device for CNC machine tool tools according to claim 4, characterized in that: The visual inspection device includes a first support frame and a visual camera. The visual camera is installed on the first support frame. The viewfinder of the visual camera faces the guide groove. The visual camera is electrically connected to the first driving mechanism.

6. The automatic clamping device for CNC machine tool tools according to claim 5, characterized in that: The moving mechanism includes a second driving mechanism, a screw rod and a slide. The second driving mechanism is arranged at one end of the guide groove. The second driving mechanism is connected to the screw rod in a transmission manner. The screw rod is threadedly matched with the slide. The tool handle structure is arranged on the slide. The screw rod is extended along the length direction of the guide groove.

7. The automatic clamping device for CNC machine tool tools according to claim 6, characterized in that: The second driving mechanism comprises a second driving motor; and / or, The tightening mechanism further includes a second support frame, the second support frame is arranged on the working platform, and the second driving mechanism is installed on the second support frame.

8. The automatic clamping device for CNC machine tool tools according to claim 6, characterized in that: It also includes a controller, which is electrically connected to the first driving mechanism and the second driving mechanism respectively, and the controller is communicatively connected to the visual detection device and the pressure detection device respectively.

9. The automatic clamping device for CNC machine tool tools according to any one of claims 1 to 8, characterized in that: The first clamping portion includes a plurality of grooves, and the second clamping portion includes a plurality of splines, and the splines can be clamped into the grooves.

10. The automatic clamping device for CNC machine tool tools according to any one of claims 1 to 8, characterized in that: The first drive mechanism includes a telescopic rotary motor; or, The first driving mechanism includes a lifting device and a first driving motor. The lifting device is connected to the first driving motor. The lifting device is used to drive the first driving motor to move up and down. The driving shaft of the first driving motor is connected to the rotating member.

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