Automatic loading and unloading device for CNC (Computer Numerical Control) cutter

Abstract

The invention discloses an automatic loading and unloading device for CNC cutters. The automatic loading and unloading device comprises a cutter handle rotating assembly, a clamping assembly, a follow-up assembly and a control module which are installed in a frame. The cutter handle rotating assembly is arranged in the middle of the frame and drives the cutter handle to rotate. The clamping assembly and the follow-up assembly are distributed on the two sides of the cutter handle rotating assembly to conduct clamping and follow-up movement on a pressing cap on the cutter handle. The control module is electrically connected with and controls the cutter handle rotating assembly, the clamping assembly, the follow-up assembly, the auxiliary part and other assemblies. The cutter handle rotating assembly, the clamping assembly and the follow-up assembly are adopted as execution structures for cutter assembly and disassembly, the whole machine is controlled and operated in a coordinated mode with torque detection and control as targets, and the situation that the clamping precision is reduced due to too tight and insufficient manual clamping is avoided; the problems of low efficiency, low quality, poor consistency and the like of a large amount of tedious manual operation are solved, meanwhile, the manual operation intensity is relieved, the machining cost is reduced, and finally the production efficiency and the productivity are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic loading and unloading of CNC tools, and in particular relates to an automatic loading and unloading device for CNC tools. Background Art

[0002] During CNC machining, it is necessary to match the appropriate tool according to the characteristics of the machined parts. With the development of intelligent manufacturing technology, the machined parts are becoming more and more complex. For example, the number of machining tools involved in the battery housing parts of new energy vehicles can reach more than 60; after adding the preparatory tools, the total number can reach nearly 100. Each tool needs to be installed on the tool holder according to the processing technology. If manual loading and unloading continues, there will be huge workload, high labor intensity, uncontrollable assembly quality, low work efficiency, high overall processing cost, and even affect the processing accuracy. The problems will eventually affect the production rhythm and capacity of the workshop. Summary of the invention

[0003] The purpose of the present invention is to provide a CNC tool automatic loading and unloading device, which solves the problems of low efficiency and low quality of a large number of cumbersome manual operations for disassembling tools and improves assembly quality and work efficiency.

[0004] The technical solution adopted by the present invention is: a CNC tool automatic loading and unloading device, including a tool handle rotating component, a clamping component, a follower component and a control module installed in a frame; the tool handle rotating component is arranged in the middle of the frame and rotates with the tool handle, and the clamping component and the follower component are distributed on both sides of the tool handle rotating component to clamp and follow the movement of the pressure cap on the tool handle; the control module is electrically connected and controlled with the tool handle rotating component, the clamping component, the follower component, and auxiliary components.

[0005] The present invention is also characterized in that: The tool handle rotating assembly includes a variable frequency motor, the variable frequency motor is connected with a reducer, the reducer is connected to the tool handle mounting seat through a torque limiter, the tool handle mounting seat is mounted with a tool handle, and the tool handle is used to fix and clamp the tool; the tool handle mounting seat is also movably sleeved with a fixing frame, and the fixing frame is fixedly connected to the frame; The reducer and torque limiter can reduce the speed and increase the torque respectively, and protect the safe operation of the power system through torque control.

[0006] The clamping assembly includes a clamping base plate, and cylinders are arranged on both sides of the clamping base plate in opposite positions. The cylinder connecting parts connected to the cylinders are connected to the chuck mounting plate through the clamping bracket. The clamping bracket is fixedly connected to the clamping base plate. A chuck is arranged on the chuck mounting plate. A torque sensor is arranged between the chuck and the chuck mounting plate. The chuck and the pressure cap on the tool handle can be engaged with straight grooves evenly distributed along the circumference.

[0007] The clamping bracket is fixedly connected to the clamping base plate, the two clamping head mounting plates are slidably connected to the clamping linear slide rail, and the two ends of the clamping linear slide rail are respectively fixed to the two clamping brackets.

[0008] The clamping base plate is equipped with a position sensor for detecting the circumferential position of the tool handle. An RFID reading head is provided above and below the chuck mounting plate. The RFID reading head is used to scan the RFID code on the tool and the tool handle to obtain the information of the installed tool and tool handle.

[0009] The follower assembly includes a base plate, on which a pair of vertical follower linear slides are arranged, and the two ends of the follower linear slides are fixedly connected to the base plate through slide rail mounting frames, and the follower linear slides are movably inserted in the clamping bracket, and a return spring is also sleeved on the follower linear slide, one end of the return spring is pressed against the lower slide rail mounting frame, and the other end is pressed against the outer ring of the double-cut edge flange type linear bearing, and the double-cut edge flange type linear bearing is nested in the follower linear slide and fixed at the bottom of the clamping bracket.

[0010] The control module includes a programmable controller, a frequency converter, a touch screen that can realize human-computer interaction, a phase monitor and an overload protector; the touch screen realizes human-computer interaction and combines with industrial software to realize information management.

[0011] The programmable controller is used to collect the detection data of the torque sensor, position sensor and RFID reading head, set the torque limit value according to user needs, and control the variable frequency motor to perform actions; As the driver of the variable frequency motor, the inverter can realize high-speed or low-speed rotation control of the variable frequency motor as required; The phase monitor and overload protector are used to monitor whether the components of the control module are operating normally, and to promptly issue an alarm according to control requirements when an abnormality is found.

[0012] Auxiliary components include exterior sheet metal, visual protective cover in loading and unloading area, and auxiliary components, etc. They are used to provide necessary assistance for the operation of the whole machine, help the whole machine to run smoothly and coordinately, and provide a better human-machine interaction experience.

[0013] The main appearance of the CNC tool automatic loading and unloading device of the present invention is an outer sheet metal cover, which is installed on the frame. The outer sheet metal is used for the structural installation and connection support of the whole machine, and realizes the isolation and protection of the internal operating power components to prevent personnel or foreign objects from interfering with the operation of the equipment; at the same time, as the human-machine interaction area of ​​the whole machine, it provides an installation and connection carrier for the interactive components, and the height and angle are ergonomic, thereby improving the convenience and comfort of human-machine interaction.

[0014] The visible protective cover isolates and connects the working area for loading and unloading tools inside the equipment with the outside world, making it easy to put in and take out the tool handle before and after the loading and unloading action, as well as the isolation protection during the loading and unloading action.

[0015] Pneumatic pressure reducing valves, cylinder position sensors, etc. are used as auxiliary components. They can provide detection and control of working pressure and position for the cylinder, and provide necessary assistance for loading and unloading tools.

[0016] The beneficial effects of the present invention are as follows: the CNC tool automatic loading and unloading device proposed by the present invention calibrates the torque sensor and forms digital coding information according to the clamping torque required when clamping CNC tools of different diameters; during operation, it is only necessary to put the CNC tool into the CNC tool handle on the device, and the control module automatically reads the coding information through the RFID reading head and executes the corresponding control strategy, controls the tool handle rotating component to drive the tool handle to rotate, and the clamping component and the follower component clamp and follow the pressure cap on the tool handle; one-button fast clamping of the CNC tool is achieved; similarly, the automatic disassembly of the CNC tool can also be achieved; the clamping module of the CNC tool handle with different specifications can adapt to the automatic loading and unloading of various commonly used CNC tools; in addition to limiting the torque range, the torque limiter can also provide overload protection function. The control module provides perfect control logic and human-computer interaction, making the operation of automatic loading and unloading simple and highly automated.

[0017] The exterior sheet metal is used for the installation and connection of various structures, and to isolate and protect the internal operating power components. At the same time, it provides an installation and connection carrier for the interactive components, which is more ergonomic and improves the human-computer interaction experience.

[0018] The present invention has high clamping efficiency, high precision and good consistency, which solves the problems of inefficiency and low quality of a large number of cumbersome manual operations, while reducing the intensity of manual operations, reducing the uncertainty of manual operations, improving assembly quality and work efficiency, reducing processing costs, and ultimately improving production efficiency and capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an appearance diagram of the CNC tool automatic loading and unloading device of the present invention; Figure 2 It is a schematic diagram of the structure of the tool handle rotating assembly of the present invention; Figure 3 It is a schematic diagram of the structure of the clamping assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the follower assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the control module of the present invention; Figure 6 This is a diagram of the internal structure layout of the CNC tool automatic loading and unloading device of the present invention; Figure 7 It is a schematic diagram of the internal structure of the CNC tool automatic loading and unloading device of the present invention; Figure 8 It is a schematic diagram of the protective cover structure of the present invention.

[0020] In the figure, 1. outer sheet metal cover; 2. power indicator light; 3. cam switch; 4. ventilation inlet; 5. pneumatic pressure reducing valve; 6. power connector; 7. compressed air connector; 8. communication interface; 9. operation button and indicator light; 10. touch screen; 11. emergency stop switch; 12. visual protective cover; 13. leveling caster; 14. cooling fan and cooling hole; 15. maintenance door; 16. solenoid valve group; 20. tool; 21. tool handle; 22. tool handle mounting seat; 23. fixing bracket; 24. torque limiter; 25. reducer; 26. frequency conversion motor; 30. cylinder; 31. clamping bracket; 32. chuck mounting plate; 33. clamping base plate; 34. position sensor; 35. clamping linear guide rail; 36. clamping slide; 37. cylinder connector; 38. chuck ;39.RFID reading head;40.Torque sensor;41.Base plate mounting frame;42.Base plate;43.Slide rail mounting frame;44.Spring;45.Follow-up linear slide rail;46.Double-cut flange linear bearing;50.Electrical box;51.Transformer;52.Relay;53.AC contactor;54.Thermal protector;55.DC power supply;56.PLC;57.Phase monitor;58.Circuit breaker;59.Inverter;60.Frame;61.Tool handle rotating assembly;62.Clamping assembly;63.Follow-up assembly;64.Control module;70.Front guide rail;71.Front cylinder;72.Front cylinder mounting frame;73.Upper cylinder;74.Upper cylinder mounting frame;75.Upper guide rail;76.Upper protective plate;77.Front protective plate. DETAILED DESCRIPTION

[0021] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

[0022] Example 1 Reference Figure 1 The CNC tool automatic loading and unloading device of the present invention is as follows: Figure 1-8 As shown, it includes a tool handle rotating assembly 61, a clamping assembly 62, a follower assembly 63 and a control module 64 installed in a frame 60; the tool handle rotating assembly 61 is arranged in the middle of the frame 60 and rotates with the tool handle, and the clamping assembly 62 and the follower assembly 63 are distributed on both sides of the tool handle rotating assembly 61 to clamp and follow the movement of the pressure cap on the tool handle; the control module is electrically connected and controlled with the tool handle rotating assembly, the clamping assembly, the follower assembly, and auxiliary components.

[0023] Example 2 On the basis of Example 1, the tool handle rotating assembly 61 of the present invention includes a variable frequency motor 26, the variable frequency motor 26 is connected with a reducer 25, the reducer 25 is connected to the tool handle mounting seat 22 through a torque limiter 24, the tool handle mounting seat 22 is installed with a tool handle 21 through a key connection, and the tool handle 21 is used to fix and clamp the tool 20; the tool handle mounting seat 22 is also movably sleeved with a fixing frame 23, and the fixing frame 23 is fixedly connected to the frame 60; The speed reducer 25 and the torque limiter 24 can respectively reduce the rotation speed and increase the torque, thereby protecting the safe operation of the power system through torque control.

[0024] The clamping assembly 62 includes a clamping base plate 33 slidably connected to a base plate 42, and cylinders 30 are arranged on both sides of the clamping base plate 33 in opposite positions. A cylinder connector 37 connected to the cylinder 30 passes through a clamping bracket 31 and is connected to a chuck mounting plate 32. A chuck 38 is arranged on the chuck mounting plate 32. The chuck 38 is adapted to the pressure cap structure on the tool handle and can be engaged together to clamp the tool handle. A torque sensor 40 is also arranged between the chuck 38 and the chuck mounting plate 32.

[0025] Example 3 On the basis of Example 1 and Example 2, The clamping bracket 31 is fixedly connected to the clamping base plate 33 , and the two clamping head mounting plates 32 are slidably connected to the clamping linear slide rail 35 . The two ends of the clamping linear slide rail 35 are respectively fixed to the two clamping brackets 31 .

[0026] The clamping base plate 33 is equipped with a position sensor 34 for detecting the circumferential position of the tool handle. RFID reading heads 39 are respectively arranged above and below the chuck mounting plate 32. The RFID reading heads 39 are respectively used to scan the RFID codes on the tool and the tool handle to obtain the information of the installed tool and tool handle.

[0027] The follower assembly 63 includes a base plate 42, on which a pair of vertical follower linear guide rails 45 are arranged. The two ends of the follower linear guide rails 45 are fixedly connected to the base plate 42 through guide rail mounting frames 43. The follower linear guide rails 45 are movably inserted into the clamping bracket 31. A return spring 44 is also sleeved on the follower linear guide rail 45. One end of the return spring 44 is pressed against the lower guide rail mounting frame 43, and the other end is pressed against the outer ring of the double-cut flange type linear bearing 46. The double-cut flange type linear bearing 46 is nested in the follower linear guide rail 45 and fixed at the bottom of the clamping bracket 31.

[0028] Example 4 Based on Example 1, The control module 64 includes a programmable controller 56, a frequency converter 59, a touch screen 10 capable of realizing human-computer interaction, a phase succession monitor 57 and an overload protector 58; The programmable controller 56 is used to collect the detection data of the torque sensor, the position sensor and the RFID reading head, set the torque limit value according to the user's needs, and control the variable frequency motor to perform the action; The frequency converter 59 serves as a driver of the variable frequency motor 26 and can realize high-speed and low-speed rotation control of the variable frequency motor as required; The phase monitor 57 and the overload protector 58 are used to monitor whether the components of the control module are operating normally, and to promptly issue an alarm according to the control requirements when an abnormality is found.

[0029] Example 5 The main body of the CNC tool automatic loading and unloading device of the present invention is an outer sheet metal cover 1, which is installed on the frame 60 and serves as a carrier to install and connect peripheral components. Its appearance is a rectangular parallelepiped, with an inclined boss designed on the upper side; the right side is used as the equipment cable connection and auxiliary operation area; the left side is designed with heat dissipation ventilation holes; the rear side is designed with a maintenance door; and the lower side is a base.

[0030] The upper inclined surface of the outer sheet metal cover 1 is provided with operation buttons and indicator lights 9, as well as a touch screen 10, which are used to control the operation of the whole machine and the setting and display of operation parameters, such as the loading and unloading rotation torque value, tool and tool holder parameter information display, etc.

[0031] Two emergency stop switches 11 are arranged on the front plane of the upper side of the outer sheet metal cover 1. The user can stop the equipment urgently by pressing any of the emergency stop switches 11.

[0032] A power indicator light 2 and a power cam switch 3 are arranged on the right side of the outer sheet metal cover 1 to control the on / off of the power supply of the whole machine and display the status. A ventilation inlet 4 is also arranged to be an air intake for internal heat dissipation.

[0033] A pneumatic pressure reducing valve 5 is also provided to control the pressure of the compressed air so that each pneumatic component obtains compressed air of appropriate pressure.

[0034] A power connector 6, a compressed air connector 7, and a communication interface 8 are also provided to connect various systems in the workshop.

[0035] A cooling fan and a cooling hole 14 are provided on the left side of the outer sheet metal cover 1, which are used as air outlets for internal heat dissipation.

[0036] A maintenance door 15 is provided at the rear side of the outer sheet metal cover 1, and inside is a control module 64 and a solenoid valve group 16 installed on the frame 60. The electronic control components can be maintained and operated by opening the maintenance door 15. The solenoid valve group 16 is used to control the operation of each cylinder.

[0037] Below the outer sheet metal cover 1 is the base of the whole machine, the main body of the base is a frame 60, various functional components are installed and connected on the top, and leveling casters 13 are installed on the bottom.

[0038] Reference Figure 2 The tool handle rotating assembly 61 of the present invention shows a rotary power transmission scheme for tool loading and unloading. The variable frequency motor 26 is connected to the reducer 25 and then installed on the frame 60. The output end is above the reducer 25, where the torque limiter 24, the tool handle mounting seat 22, and the fixing frame 23 are installed; the fixing frame 23 is fixedly connected to the frame; The tool handle mounting seat 22 is replaceable, and the tool handle mounting seat 22 of the required tool handle type can be replaced as needed, such as BT tool handle, JT tool handle, HSK tool handle mounting seat, mounting seat, etc. The tool handle 21 and the tool 20 to be disassembled and assembled are placed above the tool handle mounting seat 22. In this way, the tapered handle part of the tool handle 21 can be driven to rotate by the rotating assembly 61.

[0039] Reference Figure 3 The clamping assembly 62 of the present invention has a left-right symmetrical structure as a whole, and moves synchronously toward the middle from the left and right directions; it is used to clamp the pressure cap of the tool handle 21 and limit the axial rotational freedom of the pressure cap, control the rotational torque, and read the information of the tool handle 21 and the tool 20.

[0040] The outer shell bodies of the left and right cylinders 30 are respectively installed on the left and right clamping brackets 31, the middle of the left and right clamping brackets 31 are connected to the upper and lower clamping linear guide rails 35, and the rear of the left and right clamping brackets 31 are installed on the clamping base plate 33; these constitute the fixed structure of the clamping assembly 62.

[0041] The clamping slider 36 is connected to the clamping linear slide rail 35, and each clamping slider 36 is connected to a chuck mounting plate 32, and each of the left and right chuck mounting plates 32 is connected to a chuck 38; these constitute the movement and direct clamping structure of the clamping assembly 62, which is used to move left and right to achieve the clamping and loosening of the pressure cap of the tool handle 21.

[0042] In addition, the left and right torque sensors 40 are respectively installed on the two chucks 38 for detecting and controlling the torque of the tool handle 21 and the tool 20 being rotated and loaded and unloaded; two RFID reading heads 39 are connected to the upper and lower sides of the chuck mounting plate 32 for reading the information of the tool handle 21 and the tool 20.

[0043] Reference Figure 4 The follower assembly 63 of the present invention is a left-right symmetrical structure as a whole, connected to the clamping assembly 62 from the left and right sides respectively, and provides the freedom of upward and downward movement.

[0044] The clamping assembly 62 includes a double-cut flange type linear bearing 46, which is respectively connected to the left and right follower linear guide rails 45; the upper and lower ends of the follower linear guide rails 45 are mounted on the base plate 42 through the guide rail mounting frame 43, and the base plate 42 is mounted on the frame 60 through the base plate mounting frame 41; two reset springs 44 are respectively installed between the double-cut flange type linear bearing 46 on the lower side and the guide rail mounting frame 43, and the reset springs 44 are nested in the follower linear guide rails 45 for resetting the follower assembly; these constitute the fixed structure of the follower assembly 63.

[0045] Reference Figure 2 , Figure 3 and Figure 4 The rotating assembly 61 of the present invention drives the tapered handle portion of the tool handle 21 to rotate.

[0046] The clamping assembly 62 is connected to the follower assembly 63 via a follower linear guide rail 45 and a double-cut flange type linear bearing 46 , and the follower assembly 63 is connected to the frame 60 .

[0047] The clamping assembly 62 drives the chuck 38 through the cylinder 30 to clamp the tool handle 21 from the left and right directions and limit the axial rotation freedom of the tool handle 21; the follower assembly 63 provides support for the clamping assembly 62 and the freedom to move up and down.

[0048] In summary, these components realize the driven rotation of the tapered shank of the tool handle 21, the axial stopping of the pressure cap of the tool handle 21, and the up and down movement of the pressure cap and the tapered shank of the tool handle 21 during relative rotation, thereby completing the automatic loading and unloading movement of the tool 20 and the tool handle 21.

[0049] Reference Figure 5 The control module 64 of the present invention is installed behind the frame 60 inside the outer sheet metal cover 1 and is used for the control, detection, and human-computer interaction of the whole machine.

[0050] The control module 64 is internally installed with a programmable controller 56 for coordinating the coordinated operation of the whole machine electrical appliances, such as controlling the components to complete the loading and unloading of the tool 20 and the tool handle 21, collecting the detection data of the torque sensor 40 and the RFID reading head 39, cooperating with the touch screen 10 to realize human-computer interaction, and combining with industrial software to realize information management, etc.

[0051] Other electrical components are installed inside the control module 64 for coordinated control of various execution components. For example, the DC power supply 55 and the transformer 51 are used for power supply to other electrical appliances; the relay 52 is used for controlling the solenoid valve group 16, and finally completes the output control of the cylinder and other electrical appliances; the frequency converter 59, the AC contactor 53, the thermal protector 54, and the phase succession monitor 57 are used for controlling the variable frequency motor 26; and the circuit breaker 58 is used for safety protection and control of power supply.

[0052] Reference Figure 6 The internal structure layout of the present invention intuitively shows the arrangement of the main functional components, which is the basis for function realization and the core of technical design.

[0053] The frame 60 is used as the main body of the functional components, and four leveling casters 13 are installed below the frame 60; a rotating assembly 61 is installed on the bottom plate inside the frame 60, and a clamping assembly 62 and a follower assembly 63 are installed above the rotating assembly 61; a control module 64 and other auxiliary components are installed behind the frame 60. The functional components work together to realize the automatic loading and unloading of the tool 20 and the tool handle 21.

[0054] Reference Figure 7 The outer sheet metal cover 1 of the present invention is provided with a visible protective cover 12, which is divided into an upper protective plate 76 and a front protective plate 77, and is integrally installed on the inner wall surface of the front side of the outer sheet metal cover 1 (i.e., the upper side and front side of the tool 20 and the handle 21); it is used to achieve isolation and connection between the internal loading and unloading operation area and the outside.

[0055] An upper protective plate 76 is provided inside the outer sheet metal cover 1. The upper protective plate 76 is installed between two upper guide rails 75 through a connecting piece. The upper guide rails 75 are installed on the inner wall of the outer sheet metal cover 1; the upper protective plate 76 is connected to the push rod of the upper cylinder 73 through a connecting piece, and the front and rear ends of the upper cylinder 73 are respectively installed on the inner wall of the outer sheet metal cover 1 through the upper cylinder mounting frame 74; the upper cylinder 73 retreats to drive the upper protective plate 76 to retreat, thereby realizing the opening of the upper protective cover.

[0056] Similarly, the front protective plate 77 is installed between the two front guide rails 70 through a connecting piece, and the front guide rail 70 is installed on the inner wall of the outer sheet metal cover 1; the front protective plate 77 is connected to the push rod of the front cylinder 71 through a connecting piece, and the front and rear ends of the front cylinder 71 are respectively installed on the inner wall of the outer sheet metal cover 1 through the front cylinder mounting frame 72; the front cylinder 71 retreats to drive the front protective plate 77 to descend, thereby realizing the opening of the visible protective cover.

[0057] The upper protection plate 76 and the front protection plate 77 are made of transparent visual materials, and can be opened and closed in time under the drive of the upper cylinder 73 and the front cylinder 71. After closing, the internal tool loading and unloading work area and the external operator can be isolated, which not only protects the safety of the personnel but also ensures the observation of the working status, and at the same time improves the aesthetics of the equipment.

[0058] Example 6 The specific method of using the automatic loading and unloading of the CNC tool of the present invention is as follows: Step 1: Turn on the power cam switch to initialize the device; Step 2: Turn on the air pump and check the air pipe; Step 3: Place the CNC tool holder into the tool holder mounting seat; Step 4: Turn the tool into the appropriate retaining ring and put it into the tool handle; Step 5: Select the CNC tool torque number on the touch screen; Step 6: Click the "Tighten Knife" operation button to tighten the tool. The two split pins on the clamping mechanism are pushed toward the tool handle and enter the slot on the cylindrical surface of the tool handle under the push of the cylinder to clamp the tool. When the set torque is reached, the cylinder quickly disengages the tool handle and the tool handle stops rotating. Click "Tighten Knife" again to confirm that the tightening work is completed. When unloading the tool, click the "Release the Tool" button, and the two split pins on the clamping mechanism are pushed toward the tool handle by the cylinder and enter the slot on the cylindrical surface of the tool handle. The tool handle rotates to release the tool: when the tool is completely released, the cylinder quickly disengages the tool handle and the tool handle stops rotating, and the unloading operation is automatically completed.

Claims

1. CNC tool automatic loading and unloading device, characterized in that: The invention comprises a tool handle rotating assembly (61), a clamping assembly (62), a follower assembly (63) and a control module (64) installed in a frame (60); the tool handle rotating assembly (61) is arranged in the middle of the frame (60); the clamping assembly (62) and the follower assembly (63) are distributed on both sides of the tool handle rotating assembly (61) to clamp and follow the movement of the pressure cap on the tool handle; the control module (64) is electrically connected to and controls the tool handle rotating assembly (61), the clamping assembly (62), the follower assembly (63) and other components.

2. The CNC tool automatic loading and unloading device according to claim 1, characterized in that: The tool handle rotating assembly (61) comprises a variable frequency motor (26), the variable frequency motor (26) is connected to a reducer (25), the reducer (25) is connected to a tool handle mounting seat (22) via a torque limiter (24), a tool handle (21) is mounted on the tool handle mounting seat (22) via a key connection, and the tool handle (21) is used to fix and clamp the tool (20); a fixing frame (23) is also movably sleeved on the tool handle mounting seat (22), and the fixing frame (23) is fixedly connected to the frame (60); The speed reducer (25) and the torque limiter (24) can respectively reduce the rotation speed and increase the torque, thereby protecting the safe operation of the power system through torque control.

3. The CNC tool automatic loading and unloading device according to claim 2, characterized in that: The clamping assembly (62) comprises a clamping base plate (33), cylinders (30) are arranged on both sides of the clamping base plate (33) and are located opposite to each other. A cylinder connector (37) connected to the cylinder (30) passes through a clamping bracket (31) and is connected to a chuck mounting plate (32). The clamping bracket (31) is fixedly connected to the clamping base plate (33). A chuck (38) is arranged on the chuck mounting plate (32). The chuck (38) can be engaged with a straight groove evenly distributed along the circumference of a pressure cap on a tool handle. A torque sensor (40) is arranged between the chuck (38) and the chuck mounting plate (32).

4. The CNC tool automatic loading and unloading device according to claim 3, characterized in that: The clamping bracket (31) is fixedly connected to the clamping base plate (33), the two clamping head mounting plates (32) are slidably connected to the clamping linear slide rail (35), and the two ends of the clamping linear slide rail (35) are respectively fixed to the two clamping brackets (31).

5. The CNC tool automatic loading and unloading device according to claim 3, characterized in that: The clamping base plate (33) is equipped with a position sensor (34) for detecting the circumferential position of the tool handle, and an RFID reading head (39) is provided above and below the chuck mounting plate (32), and the RFID reading head (39) is used to scan the RFID code on the tool and the tool handle to obtain information of the installed tool and tool handle.

6. The CNC tool automatic loading and unloading device according to claim 2, characterized in that: The follower assembly (63) comprises a base plate (42), on which a pair of vertical follower linear guide rails (45) are arranged, and the two ends of the follower linear guide rails (45) are fixedly connected to the base plate (42) via a guide rail mounting frame (43), and the follower linear guide rails (45) are movably inserted into the clamping bracket (31), and a return spring (44) is also sleeved on the follower linear guide rail (45), and one end of the return spring (44) is pressed against the lower guide rail mounting frame (43), and the other end is pressed against the outer ring of a double-cut edge flange type linear bearing (46), and the double-cut edge flange type linear bearing (46) is nested in the follower linear guide rail (45) and fixed to the bottom of the clamping bracket (31).

7. The CNC tool automatic loading and unloading device according to claim 2, characterized in that: The control module (64) includes a programmable controller (56), a frequency converter (59), a touch screen (10) capable of realizing human-computer interaction, a phase succession monitor (57), and an overload protector (58); The programmable controller (56) is used to collect detection data from the torque sensor, the position sensor and the RFID reading head, set the torque limit value according to user requirements, and control the variable frequency motor to perform actions; The frequency converter (59) serves as a driver for the variable frequency motor (26), and can realize high-speed or low-speed rotation control of the variable frequency motor as required; The phase successive monitor (57) and the overload protector (58) are used to monitor whether the components of the control module are operating normally, and to promptly issue an alarm according to control requirements when an abnormality is found; The touch screen (10) realizes human-computer interaction and combines with industrial software to realize information management.

8. The CNC tool automatic loading and unloading device according to claim 2, characterized in that: The frame (60) is covered by an outer sheet metal cover (1), and a visual protective cover (12) is provided on the front of the outer sheet metal cover (1). The visual protective cover (12) is divided into two parts, an upper protective plate (76) and a front protective plate (77). The visual protective cover (12) is located on the front side of the tool (20) and the tool handle (21).

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